Author
Chatrchyan, S., Işıldak, Bora
Publication Date
2014-01
Publication Place
-
Elsevier
Subject
Hadron-Hadron Scattering, Higgs physics
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1029-8479
Record ID
35cb22c6-ffa1-4203-aeab-5c6e4b53a1bc
Library Location
Natural and Mathematical Sciences
Date
2014-01
Notes
SCOAP
Sample Text
A search for the standard model Higgs boson decaying to a W-boson pair at the LHC is reported. The event sample corresponds to an integrated luminosity of 4.9 fb−1 and 19.4 fb−1 collected with the CMS detector in pp collisions at s√ = 7 and 8 TeV, respectively. The Higgs boson candidates are selected in events with two or three charged leptons. An excess of events above background is observed, consistent with the expectation from the standard model Higgs boson with a mass of around 125 GeV. The probability to observe an excess equal or larger than the one seen, under the background-only hypothesis, corresponds to a significance of 4.3 standard deviations for m H = 125.6 GeV. The observed signal cross section times the branching fraction to WW for m H = 125.6 GeV is 0.72+0.20−0.18 times the standard model expectation. The spin-parity J P = 0+ hypothesis is favored against a narrow resonance with J P = 2+ or J P = 0− that decays to a W-boson pair. This result provides strong evidence for a Higgs-like boson decaying to a W-boson pair.
DOI
10.1007/JHEP01(2014)096
Cilt
2014
