Loading...
Study of exclusive two-photon production of W(+)W(−) in pp collisions at s√=7 TeV and constraints on anomalous quartic gauge couplings
Baringer, Philip S. Bean, Alice Benelli, Gabriele Kenny, R. P., III Murray, Michael J. Noonan, Danny Sanders, Stephen J. Stringer, Robert W. Wood, Jeffrey Scott Chatrchyan, S.
Baringer, Philip S.
Bean, Alice
Benelli, Gabriele
Kenny, R. P., III
Murray, Michael J.
Noonan, Danny
Sanders, Stephen J.
Stringer, Robert W.
Wood, Jeffrey Scott
Chatrchyan, S.
Citations
Altmetric:
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 μ ±e∓ vertex with no additional associated charged tracks and dilepton transverse momentum p T(μ ±e∓) > 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(W)(0),C/Λ(2) with a dipole form factor and an energy cutoff Λcutoff = 500 GeV are of the order of 10(−4).
Description
This is the publisher's version, also available electronically from http://link.springer.com/article/10.1007%2FJHEP07%282013%29116.
Date
2013-07-18
Journal Title
Journal ISSN
Volume Title
Publisher
Springer Berlin Heidelberg
Collections
Research Projects
Organizational Units
Journal Issue
Keywords
Hadron-Hadron Scattering
Citation
S. Chatrchyan et al. (The CMS Collaboration). (2013). "Study of exclusive two-photon production of W(+)W(−) in pp collisions at s√=7 TeV and constraints on anomalous quartic gauge couplings." Journal of High Energy Physics, 07(2013):116. http://www.dx.doi.org/10.1007/JHEP07(2013)116.