|
Title
|
|
|
|
Study of exclusive two-photon production of in pp collisions at and constraints on anomalous quartic gauge couplings
| |
|
Author
|
|
|
|
| |
|
Institution/Organisation
|
|
|
|
CMS Collaboration
| |
|
Abstract
|
|
|
|
| A search for exclusive or quasi-exclusive W+W- production by photon-photon interactions, pp -> p(*)W(+)W(-)p(*), at \/s = 7 TeV is reported using data collected by the CMS detector with an integrated luminosity of 5.05 fb(-1). Events are selected by requiring a mu(+/-)mu(-/+) vertex with no additional associated charged tracks and dilepton transverse momentum p(T)(mu(+/-)mu(-/+)) > 30 GeV. Two events passing all selection requirements are observed in the data, compared to a standard model expectation of 2.2 +/- 0.4 signal events with 0.84 +/- 0.15 background. The tail of the dilepton p(T) distribution is studied for deviations from the standard model. No events are observed with p(T) > 100 GeV. Model-independent upper limits are computed and compared to predictions involving anomalous quartic gauge couplings. The limits on the parameters a(0,c)(W)/A(2) with a dipole form factor and an energy cutoff A(cutoff) = 500 GeV are of the order of 10(-4). |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
Journal of high energy physics. - Bristol
| |
|
Publication
|
|
|
|
Bristol
:
2013
| |
|
ISSN
|
|
|
|
1126-6708
1029-8479
[online]
| |
|
DOI
|
|
|
|
10.1007/JHEP07(2013)116
| |
|
Volume/pages
|
|
|
|
7
(2013)
, p. 1-44
| |
|
Article Reference
|
|
|
|
116
| |
|
ISI
|
|
|
|
000323202900029
| |
|
Medium
|
|
|
|
E-only publicatie
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|
Full text (open access)
|
|
|
|
| |
|