[account-manager]

account_changes_notify_addresses	Email addresses to notify on account created, password changed and account deleted.	(no default)
allow_delete_account	Allow users to delete their own account.	enabled
auth_init	Launch an initial Trac authentication setup.	enabled
cookie_refresh_pct	Persistent sessions randomly get a new session cookie ID with likelihood in percent per work hour given here (zero equals to never) to decrease vulnerability of long-lasting sessions.	10
db_htdigest_realm	Realm to select relevant htdigest db entries	(no default)
db_htpasswd_hash_type	Default hash type of new/updated passwords	crypt
email_regexp	A validation regular expression describing new account emails. Define constraints for a valid email address. A custom pattern can narrow or widen scope i.e. to accept UTF-8 characters.	(?i)^[A-Z0-9._%+-]+@(?:[A-Z0-9-]+\.)+[A-Z0-9-]{2,63}$
environ_auth_overwrite	Whether environment variable REMOTE_USER should get overwritten after processing login form input. Otherwise it will only be set, if unset at the time of authentication.	enabled
force_passwd_change	Force the user to change password when it's reset.	enabled
generated_password_length	Length of the randomly-generated passwords created when resetting the password for an account.	8
hash_method	IPasswordHashMethod used to create new/updated passwords	HtDigestHashMethod
htpasswd_file	Path relative to Trac environment or full host machine path to password file	(no default)
htpasswd_hash_type	Default hash type of new/updated passwords	crypt
notify_actions	Comma separated list of notification actions. Available actions are 'new', 'change', 'delete'.	(no default)
password_file	Path to the users file; leave blank to locate the users file by reading svnserve.conf from the default repository.	(no default)
password_store	Ordered list of password stores, queried in turn.	(no default)
persistent_sessions	Allow the user to be remembered across sessions without needing to re-authenticate. This is, user checks a "Remember Me" checkbox and, next time he visits the site, he'll be remembered.	disabled
refresh_passwd	Re-set passwords on successful authentication. This is most useful to move users to a new password store or enforce new store configuration (i.e. changed hash type), but should be disabled/unset otherwise.	disabled
register_basic_question	A question to ask instead of the standard prompt, to which the value of register_basic_token is the answer. Setting to empty string (default value) keeps the standard prompt.	(no default)
register_basic_token	A string required as input to pass verification.	(no default)
register_check	Ordered list of IAccountRegistrationInspector's to use for registration checks.	BasicCheck,EmailCheck,BotTrapCheck,RegExpCheck,UsernamePermCheck
reset_password	Set to False, if there is no email system setup.	enabled
username_char_blacklist	Always exclude some special characters from usernames. This is enforced upon new user registration.	:[]
username_regexp	A validation regular expression describing new usernames. Define constraints for allowed user names corresponding to local naming policy.	(?i)^[A-Z0-9.\-_]{5,}$
verify_email	Verify the email address of Trac users.	enabled

[attachment]

max_size	Maximum allowed file size (in bytes) for attachments.	262144
max_zip_size	Maximum allowed total size (in bytes) for an attachment list to be downloadable as a .zip. Set this to -1 to disable download as .zip. (since 1.0)	2097152
render_unsafe_content	Whether attachments should be rendered in the browser, or only made downloadable. Pretty much any file may be interpreted as HTML by the browser, which allows a malicious user to attach a file containing cross-site scripting attacks. For public sites where anonymous users can create attachments it is recommended to leave this option disabled.	disabled

[authz_policy]

authz_file

Location of authz policy configuration file. Non-absolute paths are relative to the Environment conf directory.

(no default)

[browser]

color_scale	Enable colorization of the age column. This uses the same color scale as the source code annotation: blue is older, red is newer.	enabled
downloadable_paths	List of repository paths that can be downloaded. Leave this option empty if you want to disable all downloads, otherwise set it to a comma-separated list of authorized paths (those paths are glob patterns, i.e. "*" can be used as a wild card). In a multi-repository environment, the path must be qualified with the repository name if the path does not point to the default repository (e.g. /reponame/trunk). Note that a simple prefix matching is performed on the paths, so aliases won't get automatically resolved.	/trunk,/branches/*,/tags/*
hide_properties	Comma-separated list of version control properties to hide from the repository browser.	svk:merge
intermediate_color	(r,g,b) color triple to use for the color corresponding to the intermediate color, if two linear interpolations are used for the color scale (see intermediate_point). If not set, the intermediate color between oldest_color and newest_color will be used.	(no default)
intermediate_point	If set to a value between 0 and 1 (exclusive), this will be the point chosen to set the intermediate_color for interpolating the color value.	(no default)
newest_color	(r,g,b) color triple to use for the color corresponding to the newest color, for the color scale used in blame or the browser age column if color_scale is enabled.	(255, 136, 136)
oldest_color	(r,g,b) color triple to use for the color corresponding to the oldest color, for the color scale used in blame or the browser age column if color_scale is enabled.	(136, 136, 255)
oneliner_properties	Comma-separated list of version control properties to render as oneliner wiki content in the repository browser.	trac:summary
render_unsafe_content	Whether raw files should be rendered in the browser, or only made downloadable. Pretty much any file may be interpreted as HTML by the browser, which allows a malicious user to create a file containing cross-site scripting attacks. For open repositories where anyone can check-in a file, it is recommended to leave this option disabled.	disabled
wiki_properties	Comma-separated list of version control properties to render as wiki content in the repository browser.	trac:description

[changeset]

max_diff_bytes	Maximum total size in bytes of the modified files (their old size plus their new size) for which the changeset view will attempt to show the diffs inlined.	10000000
max_diff_files	Maximum number of modified files for which the changeset view will attempt to show the diffs inlined.	0
wiki_format_messages	Whether wiki formatting should be applied to changeset messages. If this option is disabled, changeset messages will be rendered as pre-formatted text.	enabled

[components]

Enable or disable components provided by Trac and plugins. The component to enable/disable is specified by the option name. The enabled state is determined by the option value: setting the value to enabled or on will enable the component, any other value (typically disabled or off) will disable the component.

The option name is either the fully qualified name of the component or the module/package prefix of the component. The former enables/disables a specific component, while the latter enables/disables any component in the specified package/module.

Consider the following configuration snippet:

[components]
trac.ticket.report.ReportModule = disabled
acct_mgr.* = enabled

The first option tells Trac to disable the report module. The second option instructs Trac to enable all components in the acct_mgr package. The trailing wildcard is required for module/package matching.

To view the list of active components, go to the Plugins section of About Trac (requires CONFIG_VIEW permission).

See also: TracPlugins

[header_logo]

alt	Alternative text for the header logo.	(please configure the [header_logo] section in trac.ini)
height	Height of the header logo image in pixels.	-1
link	URL to link to, from the header logo.	(no default)
src	URL of the image to use as header logo. It can be absolute, server relative or relative. If relative, it is relative to one of the /chrome locations: site/your-logo.png if your-logo.png is located in the htdocs folder within your TracEnvironment; common/your-logo.png if your-logo.png is located in the folder mapped to the htdocs_location URL. Only specifying your-logo.png is equivalent to the latter.	site/your_project_logo.png
width	Width of the header logo image in pixels.	-1

[http-headers]

Headers to be added to the HTTP request. (since 1.2.3)

The header name must conform to ​RFC7230 and the following reserved names are not allowed: content-type, content-length, location, etag, pragma, cache-control, expires.

[inherit]

htdocs_dir	Path to the shared htdocs directory. Static resources in that directory are mapped to /chrome/shared under the environment URL, in addition to common and site locations. This can be useful in site.html for common interface customization of multiple Trac environments. Non-absolute paths are relative to the Environment conf directory. (since 1.0)	(no default)
plugins_dir	Path to the shared plugins directory. Plugins in that directory are loaded in addition to those in the directory of the environment plugins, with this one taking precedence. Non-absolute paths are relative to the Environment conf directory.	(no default)
templates_dir	Path to the shared templates directory. Templates in that directory are loaded in addition to those in the environments templates directory, but the latter take precedence. Non-absolute paths are relative to the Environment conf directory.	(no default)

[intertrac]

This section configures InterTrac prefixes. Option names in this section that contain a . are of the format <name>.<attribute>. Option names that don't contain a . define an alias.

The .url attribute is mandatory and is used for locating the other Trac. This can be a relative path when the other Trac environment is located on the same server.

The .title attribute is used for generating a tooltip when the cursor is hovered over an InterTrac link.

Example configuration:

[intertrac]
# -- Example of setting up an alias:
t = trac

# -- Link to an external Trac:
genshi.title = Edgewall's Trac for Genshi
genshi.url = https://genshi.edgewall.org

[interwiki]

Every option in the [interwiki] section defines one InterWiki prefix. The option name defines the prefix. The option value defines the URL, optionally followed by a description separated from the URL by whitespace. Parametric URLs are supported as well.

Example:

[interwiki]
MeatBall = http://www.usemod.com/cgi-bin/mb.pl?
PEP = http://www.python.org/peps/pep-$1.html Python Enhancement Proposal $1
tsvn = tsvn: Interact with TortoiseSvn

[logging]

log_file	If log_type is file, this should be a path to the log-file. Relative paths are resolved relative to the log directory of the environment.	trac.log
log_format	Custom logging format. If nothing is set, the following will be used: Trac[$(module)s] $(levelname)s: $(message)s In addition to regular key names supported by the ​Python logger library one could use: $(path)s the path for the current environment $(basename)s the last path component of the current environment $(project)s the project name Note the usage of $(...)s instead of %(...)s as the latter form would be interpreted by the ConfigParser itself. Example: ($(thread)d) Trac[$(basename)s:$(module)s] $(levelname)s: $(message)s	(no default)
log_level	Level of verbosity in log. Should be one of (CRITICAL, ERROR, WARNING, INFO, DEBUG).	INFO
log_type	Logging facility to use. Should be one of (none, file, stderr, syslog, winlog).	file

[mainnav]

Configures the main navigation bar, which by default contains Wiki, Timeline, Roadmap, Browse Source, View Tickets, New Ticket, Search and Admin.

The label, href, and order attributes can be specified. Entries can be disabled by setting the value of the navigation item to disabled.

The following example renames the link to WikiStart to Home, links the View Tickets entry to a specific report and disables the Search entry.

[mainnav]
wiki.label = Home
tickets.href = /report/24
search = disabled

See TracNavigation for more details.

[metanav]

Configures the meta navigation entries, which by default are Login, Logout, Preferences, Help/Guide and About Trac. The allowed attributes are the same as for [mainnav]. Additionally, a special entry is supported - logout.redirect is the page the user sees after hitting the logout button. For example:

[metanav]
logout.redirect = wiki/Logout

See TracNavigation for more details.

[mimeviewer]

max_preview_size	Maximum file size for HTML preview.	262144
mime_map	List of additional MIME types and keyword mappings. Mappings are comma-separated, and for each MIME type, there's a colon (":") separated list of associated keywords or file extensions.	text/x-dylan:dylan,text/x-idl:ice,text/x-ada:ads:adb
mime_map_patterns	List of additional MIME types associated to filename patterns. Mappings are comma-separated, and each mapping consists of a MIME type and a Python regexp used for matching filenames, separated by a colon (":"). (since 1.0)	text/plain:README(?!\.rst)|INSTALL(?!\.rst)|COPYING.*
pygments_default_style	The default style to use for Pygments syntax highlighting.	trac
pygments_modes	List of additional MIME types known by Pygments. For each, a tuple mimetype:mode:quality has to be specified, where mimetype is the MIME type, mode is the corresponding Pygments mode to be used for the conversion and quality is the quality ratio associated to this conversion. That can also be used to override the default quality ratio used by the Pygments render.	(no default)
tab_width	Displayed tab width in file preview.	8
treat_as_binary	Comma-separated list of MIME types that should be treated as binary data.	application/octet-stream,application/pdf,application/postscript,application/msword,application/rtf

[notification]

admit_domains	Comma-separated list of domains that should be considered as valid for email addresses (such as localdomain).	(no default)
ambiguous_char_width	Width of ambiguous characters that should be used in the table of the notification mail. If single, the same width as characters in US-ASCII. This is expected by most users. If double, twice the width of US-ASCII characters. This is expected by CJK users.	single
batch_subject_template	Like ticket_subject_template but for batch modifications. (since 1.0)	${prefix} Batch modify: ${tickets_descr}
default_format.email	Default format to distribute email notifications.	text/plain
email_address_resolvers	Comma separated list of email resolver components in the order they will be called. If an email address is resolved, the remaining resolvers will not be called.	SessionEmailResolver
email_sender	Name of the component implementing IEmailSender. This component is used by the notification system to send emails. Trac currently provides SmtpEmailSender for connecting to an SMTP server, and SendmailEmailSender for running a sendmail-compatible executable.	SmtpEmailSender
ignore_domains	Comma-separated list of domains that should not be considered part of email addresses (for usernames with Kerberos domains).	(no default)
message_id_hash	Hash algorithm to create unique Message-ID header. (since 1.0.13)	md5
mime_encoding	Specifies the MIME encoding scheme for emails. Supported values are: none, the default value which uses 7-bit encoding if the text is plain ASCII or 8-bit otherwise. base64, which works with any kind of content but may cause some issues with touchy anti-spam/anti-virus engine. qp or quoted-printable, which works best for european languages (more compact than base64) if 8-bit encoding cannot be used.	none
sendmail_path	Path to the sendmail executable. The sendmail program must accept the -i and -f options.	sendmail
smtp_always_bcc	Comma-separated list of email addresses to always send notifications to. Addresses are not public (Bcc:).	(no default)
smtp_always_cc	Comma-separated list of email addresses to always send notifications to. Addresses can be seen by all recipients (Cc:).	(no default)
smtp_default_domain	Default host/domain to append to addresses that do not specify one. Fully qualified addresses are not modified. The default domain is appended to all username/login for which an email address cannot be found in the user settings.	(no default)
smtp_enabled	Enable email notification.	disabled
smtp_from	Sender address to use in notification emails. At least one of smtp_from and smtp_replyto must be set, otherwise Trac refuses to send notification mails.	trac@localhost
smtp_from_author	Use the author of the change as the sender in notification emails (e.g. reporter of a new ticket, author of a comment). If the author hasn't set an email address, smtp_from and smtp_from_name are used instead. (since 1.0)	disabled
smtp_from_name	Sender name to use in notification emails.	(no default)
smtp_password	Password for authenticating with SMTP server.	(no default)
smtp_port	SMTP server port to use for email notification.	25
smtp_replyto	Reply-To address to use in notification emails. At least one of smtp_from and smtp_replyto must be set, otherwise Trac refuses to send notification mails.	trac@localhost
smtp_server	SMTP server hostname to use for email notifications.	localhost
smtp_subject_prefix	Text to prepend to subject line of notification emails. If the setting is not defined, then [$project_name] is used as the prefix. If no prefix is desired, then specifying an empty option will disable it.	__default__
smtp_user	Username for authenticating with SMTP server.	(no default)
ticket_subject_template	A Jinja2 text template snippet used to get the notification subject. The template variables are documented on the TracNotification page.	${prefix} #${ticket.id}: ${summary}
use_public_cc	Addresses in the To and Cc fields are visible to all recipients. If this option is disabled, recipients are put in the Bcc list.	disabled
use_short_addr	Permit email address without a host/domain (i.e. username only). The SMTP server should accept those addresses, and either append a FQDN or use local delivery. See also smtp_default_domain. Do not use this option with a public SMTP server.	disabled
use_tls	Use SSL/TLS to send notifications over SMTP.	disabled

[notification-subscriber]

The notifications subscriptions are controlled by plugins. All INotificationSubscriber components are in charge. These components may allow to be configured via this section in the trac.ini file.

See TracNotification for more details.

Available subscribers:

Subscriber	Description
AlwaysEmailSubscriber
CarbonCopySubscriber	Ticket that I'm listed in the CC field is modified
NewTicketSubscriber	Any ticket is created
TicketOwnerSubscriber	Ticket that I own is created or modified
TicketPreviousUpdatersSubscriber	Ticket that I previously updated is modified
TicketReporterSubscriber	Ticket that I reported is modified
TicketUpdaterSubscriber	I update a ticket

[permredirect]

redirect_login	Redirect unauthenticated users to /login/ on PermissionError	enabled
redirect_login_https	Redirect all requests to /login/ to HTTPS	disabled

[project]

admin	E-Mail address of the project's administrator.	(no default)
admin_trac_url	Base URL of a Trac instance where errors in this Trac should be reported. This can be an absolute or relative URL, or '.' to reference this Trac instance. An empty value will disable the reporting buttons.	.
descr	Short description of the project.	My example project
footer	Page footer text (right-aligned).	Visit the Trac open source project at<br /><a href="https://trac.edgewall.org/">https://trac.edgewall.org/</a>
icon	URL of the icon of the project.	common/trac.ico
name	Name of the project.	My Project
url	URL of the project web site. This is usually the domain in which the base_url resides. For example, the project URL might be https://myproject.com, with the Trac site (base_url) residing at either https://trac.myproject.com or https://myproject.com/trac. The project URL is added to the footer of notification e-mails.	(no default)

[pygments-lexer]

Configure Pygments ​lexer options.

For example, to set the ​PhpLexer options startinline and funcnamehighlighting:

[pygments-lexer]
php.startinline = True
php.funcnamehighlighting = True

The lexer name is derived from the class name, with Lexer stripped from the end. The lexer short names can also be used in place of the lexer name.

[repositories]

One of the methods for registering repositories is to populate the [repositories] section of trac.ini.

This is especially suited for setting up aliases, using a shared configuration, or specifying repositories at the time of environment creation.

See TracRepositoryAdmin for details on the format of this section, and look elsewhere on the page for information on other repository providers.

[revisionlog]

default_log_limit	Default value for the limit argument in the TracRevisionLog.	100
graph_colors	Comma-separated list of colors to use for the TracRevisionLog graph display. (since 1.0)	#cc0,#0c0,#0cc,#00c,#c0c,#c00

[search]

default_disabled_filters	Specifies which search filters should be disabled by default on the search page. This will also restrict the filters for the quick search function. The filter names defined by default components are: wiki, ticket, milestone and changeset. For plugins, look for their implementation of the ISearchSource interface, in the get_search_filters() method, the first member of returned tuple. Once disabled, search filters can still be manually enabled by the user on the search page.	(no default)
min_query_length	Minimum length of query string allowed when performing a search.	3

[sqlite]

extensions

Paths to ​sqlite extensions. The paths may be absolute or relative to the Trac environment.

(no default)

[svn]

authz_file	The path to the Subversion ​authorization (authz) file. To enable authz permission checking, the AuthzSourcePolicy permission policy must be added to [trac] permission_policies. Non-absolute paths are relative to the Environment conf directory.	(no default)
authz_module_name	The module prefix used in the authz_file for the default repository. If left empty, the global section is used.	(no default)
branches	Comma separated list of paths categorized as branches. If a path ends with '*', then all the directory entries found below that path will be included. Example: /trunk, /branches/*, /projectAlpha/trunk, /sandbox/*	trunk,branches/*
eol_style	End-of-Line character sequences when svn:eol-style property is native. If native, substitute with the native EOL marker on the server. Otherwise, if LF, CRLF or CR, substitute with the specified EOL marker. (since 1.0.2)	native
tags	Comma separated list of paths categorized as tags. If a path ends with '*', then all the directory entries found below that path will be included. Example: /tags/*, /projectAlpha/tags/A-1.0, /projectAlpha/tags/A-v1.1	tags/*

[svn:externals]

The TracBrowser for Subversion can interpret the svn:externals property of folders. By default, it only turns the URLs into links as Trac can't browse remote repositories.

However, if you have another Trac instance (or an other repository browser like ​ViewVC) configured to browse the target repository, then you can instruct Trac which other repository browser to use for which external URL. This mapping is done in the [svn:externals] section of the TracIni.

Example:

[svn:externals]
1 = svn://server/repos1                       http://trac/proj1/browser/$path?rev=$rev
2 = svn://server/repos2                       http://trac/proj2/browser/$path?rev=$rev
3 = http://theirserver.org/svn/eng-soft       http://ourserver/viewvc/svn/$path/?pathrev=25914
4 = svn://anotherserver.com/tools_repository  http://ourserver/tracs/tools/browser/$path?rev=$rev

With the above, the svn://anotherserver.com/tools_repository/tags/1.1/tools external will be mapped to http://ourserver/tracs/tools/browser/tags/1.1/tools?rev= (and rev will be set to the appropriate revision number if the external additionally specifies a revision, see the ​SVN Book on externals for more details).

Note that the number used as a key in the above section is purely used as a place holder, as the URLs themselves can't be used as a key due to various limitations in the configuration file parser.

Finally, the relative URLs introduced in ​Subversion 1.5 are not yet supported.

[ticket-workflow]

The workflow for tickets is controlled by plugins. By default, there's only a ConfigurableTicketWorkflow component in charge. That component allows the workflow to be configured via this section in the trac.ini file. See TracWorkflow for more details.

[timeline]

abbreviated_messages	Whether wiki-formatted event messages should be truncated or not. This only affects the default rendering, and can be overridden by specific event providers, see their own documentation.	enabled
changeset_collapse_events	Whether consecutive changesets from the same author having exactly the same message should be presented as one event. That event will link to the range of changesets in the log view.	disabled
changeset_long_messages	Whether wiki-formatted changeset messages should be multiline or not. If this option is not specified or is false and wiki_format_messages is set to true, changeset messages will be single line only, losing some formatting (bullet points, etc).	disabled
changeset_show_files	Number of files to show (-1 for unlimited, 0 to disable). This can also be location, for showing the common prefix for the changed files.	0
default_daysback	Default number of days displayed in the Timeline, in days.	30
max_daysback	Maximum number of days (-1 for unlimited) displayable in the Timeline.	90

[trac]

anonymous_session_lifetime	Lifetime of the anonymous session, in days. Set the option to 0 to disable purging old anonymous sessions. (since 1.0.17)	90
auth_cookie_lifetime	Lifetime of the authentication cookie, in seconds. This value determines how long the browser will cache authentication information, and therefore, after how much inactivity a user will have to log in again. The default value of 0 makes the cookie expire at the end of the browsing session. (since 0.12)	0
auth_cookie_path	Path for the authentication cookie. Set this to the common base path of several Trac instances if you want them to share the cookie. (since 0.12)	(no default)
auto_preview_timeout	Inactivity timeout in seconds after which the automatic wiki preview triggers an update. This option can contain floating-point values. The lower the setting, the more requests will be made to the server. Set this to 0 to disable automatic preview.	2.0
auto_reload	Automatically reload template files after modification.	disabled
backup_dir	Database backup location	db
base_url	Base URL of the Trac site. This is used to produce documents outside of the web browsing context, such as URLs in notification e-mails that point to Trac resources.	(no default)
check_auth_ip	Whether the IP address of the user should be checked for authentication (since 0.9).	disabled
database	Database connection string for this project	sqlite:db/trac.db
debug_sql	Show the SQL queries in the Trac log, at DEBUG level.	disabled
default_charset	Charset to be used when in doubt.	utf-8
default_date_format	The date format. Valid options are 'iso8601' for selecting ISO 8601 format, or leave it empty which means the default date format will be inferred from the browser's default language. (since 1.0)	(no default)
default_dateinfo_format	The date information format. Valid options are 'relative' for displaying relative format and 'absolute' for displaying absolute format. (since 1.0)	relative
default_handler	Name of the component that handles requests to the base URL. Options include TimelineModule, RoadmapModule, BrowserModule, QueryModule, ReportModule, TicketModule and WikiModule. The session preference for default handler take precedence, when set.	WikiModule
default_language	The preferred language to use if no user preference has been set.	(no default)
default_timezone	The default timezone to use	(no default)
htdocs_location	Base URL for serving the core static resources below /chrome/common/. It can be left empty, and Trac will simply serve those resources itself. Advanced users can use this together with trac-admin ... deploy <deploydir> to allow serving the static resources for Trac directly from the web server. Note however that this only applies to the <deploydir>/htdocs/common directory, the other deployed resources (i.e. those from plugins) will not be made available this way and additional rewrite rules will be needed in the web server.	(no default)
ignore_auth_case	Whether login names should be converted to lower case (since 0.9).	disabled
jquery_location	Location of the jQuery JavaScript library (version 3.6.3). An empty value loads jQuery from the copy bundled with Trac. Alternatively, jQuery could be loaded from a CDN, for example: ​http://code.jquery.com/jquery-3.6.3.min.js, ​http://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.6.3.min.js or ​https://ajax.googleapis.com/ajax/libs/jquery/3.6.3/jquery.min.js. (since 1.0)	(no default)
jquery_ui_location	Location of the jQuery UI JavaScript library (version 1.13.0). An empty value loads jQuery UI from the copy bundled with Trac. Alternatively, jQuery UI could be loaded from a CDN, for example: ​https://ajax.googleapis.com/ajax/libs/jqueryui/1.13.0/jquery-ui.min.js or ​http://ajax.aspnetcdn.com/ajax/jquery.ui/1.13.0/jquery-ui.min.js. (since 1.0)	(no default)
jquery_ui_theme_location	Location of the theme to be used with the jQuery UI JavaScript library (version 1.13.0). An empty value loads the custom Trac jQuery UI theme from the copy bundled with Trac. Alternatively, a jQuery UI theme could be loaded from a CDN, for example: ​https://ajax.googleapis.com/ajax/libs/jqueryui/1.13.0/themes/start/jquery-ui.css or ​http://ajax.aspnetcdn.com/ajax/jquery.ui/1.13.0/themes/start/jquery-ui.css. (since 1.0)	(no default)
mysqldump_path	Location of mysqldump for MySQL database backups	mysqldump
never_obfuscate_mailto	Never obfuscate mailto: links explicitly written in the wiki, even if show_email_addresses is false or the user doesn't have EMAIL_VIEW permission.	disabled
permission_policies	List of components implementing IPermissionPolicy, in the order in which they will be applied. These components manage fine-grained access control to Trac resources.	DefaultWikiPolicy,DefaultTicketPolicy,DefaultPermissionPolicy,LegacyAttachmentPolicy
permission_store	Name of the component implementing IPermissionStore, which is used for managing user and group permissions.	DefaultPermissionStore
request_filters	Ordered list of filters to apply to all requests.	(no default)
resizable_textareas	Make <textarea> fields resizable. Requires JavaScript.	enabled
secure_cookies	Restrict cookies to HTTPS connections. When true, set the secure flag on all cookies so that they are only sent to the server on HTTPS connections. Use this if your Trac instance is only accessible through HTTPS.	disabled
show_email_addresses	Show email addresses instead of usernames. If false, email addresses are obfuscated for users that don't have EMAIL_VIEW permission.	disabled
show_full_names	Show full names instead of usernames. (since 1.2)	enabled
timeout	Timeout value for database connection, in seconds. Use '0' to specify no timeout.	20
use_base_url_for_redirect	Optionally use [trac] base_url for redirects. In some configurations, usually involving running Trac behind a HTTP proxy, Trac can't automatically reconstruct the URL that is used to access it. You may need to use this option to force Trac to use the base_url setting also for redirects. This introduces the obvious limitation that this environment will only be usable when accessible from that URL, as redirects are frequently used.	disabled
use_chunked_encoding	If enabled, send contents as chunked encoding in HTTP/1.1. Otherwise, send contents with Content-Length header after entire of the contents are rendered. (since 1.0.6)	enabled
use_xsendfile	When true, send a X-Sendfile header and no content when sending files from the filesystem, so that the web server handles the content. This requires a web server that knows how to handle such a header, like Apache with mod_xsendfile or lighttpd. (since 1.0)	disabled
wiki_toolbars	Add a simple toolbar on top of Wiki <textarea>s. (since 1.0.2)	enabled
xsendfile_header	The header to use if use_xsendfile is enabled. If Nginx is used, set X-Accel-Redirect. (since 1.0.6)	X-Sendfile

[versioncontrol]

allowed_repository_dir_prefixes	Comma-separated list of allowed prefixes for repository directories when adding and editing repositories in the repository admin panel. If the list is empty, all repository directories are allowed.	(no default)
default_repository_type	Default repository connector type. This is used as the default repository type for repositories defined in the repositories section or using the "Repositories" admin panel.	svn

[wiki]

default_edit_area_height	Default height of the textarea on the wiki edit page. (Since 1.1.5)	20
ignore_missing_pages	Enable/disable highlighting CamelCase links to missing pages.	disabled
max_size	Maximum allowed wiki page size in characters.	262144
render_unsafe_content	Enable/disable the use of unsafe HTML tags such as <script> or <embed> with the HTML WikiProcessor. For public sites where anonymous users can edit the wiki it is recommended to leave this option disabled.	disabled
safe_origins	List of URIs considered "safe cross-origin", that will be rendered as img element without crossorigin="anonymous" attribute or used in url() of inline style attribute even if [wiki] render_unsafe_content is false (since 1.0.15). To make any origins safe, specify "*" in the list.	data:
safe_schemes	List of URI schemes considered "safe", that will be rendered as external links even if [wiki] render_unsafe_content is false.	cvs,file,ftp,git,irc,http,https,news,sftp,smb,ssh,svn,svn+ssh
split_page_names	Enable/disable splitting the WikiPageNames with space characters.	disabled

Implementation Author

• Kunal Kumar (to be contacted for any queries regarding this model implementation)
  • kkumar -at- physics.carleton.ca, Carleton University

In collaboration with

• Katy Hartling
  • khally -at- physics.carleton.ca, Carleton University
• Heather E. Logan
  • logan -at- physics.carleton.ca, Carleton University

Model Description and Implementation

The Georgi-Machacek (GM) model was proposed in 1985 [1] as a plausible scenario for EWSB with interesting collider signatures. In this model, the scalar sector of the Standard Model (SM) is extended by the addition of one complex and one real SU(2) triplet. The hypercharge assignments of the triplets allows for a custodial SU(2) symmetry to be imposed upon the scalar potential, so that rho=1 is preserved at tree level. This is desirable for SM extensions in light of constraints from electroweak precision data. The model has the following salient features that make it phenomenologically interesting:

• the hVV (and hhVV) coupling can be enhanced compared to the SM
• the presence of additional scalars (including doubly charged ones)

The GM model can thus be a useful benchmark for the study of Higgs properties as well as searches for additional scalars.

The doublet vev

$v_\phi$

and the triplet vevs

$v_\chi$

are constrained by

$v_{\phi}^2 + 8 v_{\chi}^2 = v_{SM}^2 $

to ensure the model generates the measured W and Z boson masses. We parametrize the relative size of the vevs by

$\tan \theta_H = 2 \sqrt{2} v_\chi / v_\phi$.

The scalars (apart form Goldstone bosons) in this model can be classified as two custodial SU(2) singlets, a triplet and a fiveplet. The two custodial singlets mix by an angle alpha to give eigenstates h and H, one of which is the 125 GeV Higgs.

We follow Ref. [2] to implement the most general scalar potential that conserves custodial SU(2). It is automatically CP-conserving. The parameters of the potential are denoted by mu2sq, mu3sq, lam1, lam2, lam3, lam4, lam5, M1coeff and M2coeff in the .fr file. We trade three of these to obtain the set of 9 external parameters (mh, Gf, tanth, lam2, lam3, lam4, lam5, M1coeff, M2coeff) in the .fr file that define the scalar potential.

The GM Lagrangian implementation is based on the SM implementation (SM. fr v 1.3). In addition to the scalar potential, we modify all the relevant SM Lagrangian terms that change in the GM model (e.g.: Scalar Kinetic Terms, Yukawa couplings).

We also provide the CalcHEP and MG5 model folders generated from the .fr file (feynman gauge was chosen for generating both these model folders). In the case of MG5, event generation can be simplified by using the program GMCALC (description below) to generate a param_card.dat file. (Note that the widths of t, W+, h and additional scalars should be updated in MG5 using the compute_widths option.)

References

1. H. Georgi and M. Machacek, Nucl. Phys. B 262, 463 (1985) ​http://www.sciencedirect.com/science/article/pii/0550321385903256.
2. K. Hartling, K. Kumar and H. E. Logan, Phys. Rev. D 90, 015007 (2014) ​[hep-ph].

Model files

Interfaces The .fr file can be used to generate model folders that can be used by Madgraph and CalcHEP.

Validation The feynman rules generated were checked by hand and are summarised in ​arXiv:1404.2640

GMCALC A calculator that checks for theoretical constraints as well as indirect experimental constraints ​http://people.physics.carleton.ca/~logan/gmcalc/

Change Log

• v1.2
  • Modified the antiparticle names of some scalars for clarity
  • Changed name of EXT. variable th --> tanth for clarity
  • Modified the labels used for some terms of the Lagrangian
  • Modified default values of certain EXT. parameters
  • Added the field "TeX-->" for EXT. parameters lam2-lam5