Limits on the Higgs boson lifetime and width from its decay to four charged leptons
File(s)PhysRevD.92.072010.pdf (804.53 KB)
Published version
Author(s)
Type
Journal Article
Abstract
Constraints on the lifetime and width of the Higgs boson are obtained from H→ZZ→4ℓ events using data recorded by the CMS experiment during the LHC run 1 with an integrated luminosity of 5.1 and 19.7 fb−1 at a center-of-mass energy of 7 and 8 TeV, respectively. The measurement of the Higgs boson lifetime is derived from its flight distance in the CMS detector with an upper bound of τH<1.9×10−13 s at the 95% confidence level (C.L.), corresponding to a lower bound on the width of ΓH>3.5×10−9 MeV. The measurement of the width is obtained from an off-shell production technique, generalized to include anomalous couplings of the Higgs boson to two electroweak bosons. From this measurement, a joint constraint is set on the Higgs boson width and a parameter fΛQ that expresses an anomalous coupling contribution as an on-shell cross-section fraction. The limit on the Higgs boson width is ΓH<46 MeV with fΛQ unconstrained and ΓH<26 MeV for fΛQ=0 at the 95% C.L. The constraint fΛQ<3.8×10−3 at the 95% C.L. is obtained for the expected standard model Higgs boson width.
Date Issued
2015-10-22
Date Acceptance
2015-07-23
Citation
Physical Review D, 2015, 92 (7)
ISSN
1550-7998
Publisher
American Physical Society
Journal / Book Title
Physical Review D
Volume
92
Issue
7
Copyright Statement
© 2015 CERN, for the CMS. This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Sponsor
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000363237600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
ST/J005665/1
ST/I005912/1
ST/J004901/1
ST/K003844/1 GRIDPP
ST/L00609X/1 GRIDPP
ST/K001604/1
ST/M005356/1
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
ATLAS DETECTOR
FINAL-STATES
LHC
SYMMETRIES
MODEL
MASS
Nuclear & Particles Physics
0201 Astronomical And Space Sciences
0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics
0206 Quantum Physics
Publication Status
Published
Article Number
ARTN 072010