Search for exotic decays of a Higgs boson into undetectable particles and one or more photons
Name
1-s2.0-S037026931500965X-main.pdf
Description
Published version
Size
1.03 MB
Format
Adobe PDF
Checksum (MD5)
32267530c28c1fdc2ff9bc32675bd1b5
Author(s)
The CMS Collaboration
Date Issued
2016
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Citation
Khachatryan, V., et al. "Search for Exotic Decays of a Higgs Boson into Undetectable Particles and One or More Photons." Physics Letters B 753 (2016): 363-88.
Version
Final published version
Abstract
© 2015 CERN for the benefit of the CMS Collaboration A search is presented for exotic decays of a Higgs boson into undetectable particles and one or two isolated photons in pp collisions at a center-of-mass energy of 8 TeV. The data correspond to an integrated luminosity of up to 19.4 fb−1 collected with the CMS detector at the LHC. Higgs bosons produced in gluon–gluon fusion and in association with a Z boson are investigated, using models in which the Higgs boson decays into a gravitino and a neutralino or a pair of neutralinos, followed by the decay of the neutralino to a gravitino and a photon. The selected events are consistent with the background-only hypothesis, and limits are placed on the product of cross sections and branching fractions. Assuming a standard model Higgs boson production cross section, a 95% confidence level upper limit is set on the branching fraction of a 125 GeV Higgs boson decaying into undetectable particles and one or two isolated photons as a function of the neutralino mass. For this class of models and neutralino masses from 1 to 120 GeV an upper limit in the range of 7 to 13% is obtained. Further results are given as a function of the neutralino lifetime, and also for a range of Higgs boson masses.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2015.12.017
