Contact
Name
Jonathan Hollar

Position
Former member
Member from November 2009
Projects
Research directions:
Phenomenology of elementary particles
Data analysis in HEP and GW experiments
Detector commissioning, operation and data processing
Research and development of new detectors

Experiments and collaborations:
CMS
FP420

Active projects
GasToF: ultra fast timing detector
Krzysztof Piotrzkowski

GasToF (Gas Time-of-Flight) detector is a Cherenkov detector developed for very precise (with <10 ps resolution) flight time measurements of very forward protons at the LHC. Such an excellent time resolution allows, using z-by-timing technique, for precise measurements of the event vertex z-coordinate and the background reduction. Such a detector is essential for selecting exclusive and semi-exclusive processes at high luminosity, and can also be applied for the timing and particle ID at future experiments.

Investigate new techniques for ToF-PET.

External collaborators: CMS PPS project, M. Albrow (Fermilab), C. Royon (Kansas), J. Varela (Lisbon), and E. Schnys (Photonis) and J. Howorth (Photek Ltd).
High energy photon-induced interactions
Krzysztof Piotrzkowski

High-energy photon-photon and photon-proton interactions at the LHC offer interesting possibilities for the study of the electroweak sector up to TeV scale and the search for processes beyond the Standard Model. After in-depth exploratory studies, first measurements of two-photon muon pair production were performed as well as first ever observation of W boson pairs produced by photon fusion. Now unique investigations of quartic couplings between photons and W and Z bosons are being pursued.

Surveying the scientific potential of the new e-ion collider at Brookhaven (EIC).

External collaborators: CMS FSQ analysis group, B. Surrow (Philadelphia) and the group of A. Szczurek (Krakow).

Non-active projects
Publications in CP3
All my publications on Inspire

Number of publications as CP3 member: 7 Download BibTeX

Last 5 publications

2016

CP3-16-13: Evidence for exclusive gamma-gamma to W+ W- production and constraints on anomalous quartic gauge couplings at sqrt(s) = 7 and 8 TeV
Khachatryan, Vardan and others

[Abstract] [PDF] [Journal] [Dial]
Submitted to JHEP
Refereed paper. April 19.

2013

CP3-13-24: Study of exclusive two-photon production of $W^+W^-$ in pp collisions at $sqrt{s}$ = 7 TeV and constraints on anomalous quartic gauge couplings
CMS Collaboration

[Abstract] [PDF] [Journal] [Dial] [Full text 1] [Full text 2]
Published in JHEP 07 (2013) 116 [FSQ-12-010]
Refereed paper. May 31.

2012

CP3-12-18: Measurement of the Z/gamma*+b-jet cross section in pp collisions at 7 TeV
Chatrchyan, SergueiProg. Part. Nucl. Phys. and others

[Abstract] [PDF] [Journal] [Dial] [Full text]
Published in the Journal of High Energy Physics
Refereed paper. April 10.

2011

CP3-11-22: Measurement of the exclusive two-photon production of muon pairs at the LHC
The CMS Collaboration

[Full text]
Public experimental note. June 30.

2010

CP3-10-40: CMS Tracking Performance Results from early LHC Operation
CMS collaboration

[Abstract] [PDF] [Journal] [Dial] [Full text]
Published in Eur.Phys.J.C70:1165-1192,2010.
Refereed paper. December 21.

More publications