Search for the rare decay of the W boson into a pion and a photon in proton-proton collisions at $$ \sqrt{s}$$=13TeV
Journal Article
·
· Physics Letters. B
A search is performed for the rare decay in proton-proton collisions at . Data corresponding to an integrated luminosity of were collected during 2016 to 2018 with the CMS detector. This analysis exploits a novel search strategy based on W boson production in top quark pair events. An inclusive search for the decay is not optimal at the LHC because of the high trigger thresholds. Instead, a trigger selection is exploited in which the W boson originating from one of the top quarks is used to tag the event in a leptonic decay. The W boson emerging from the other top quark is used to search for the signature. Such decays are characterized by an isolated track pointing to a large energy deposit, and by an isolated photon of large transverse momentum. The presence of b quark jets reduces the background from the hadronization of light-flavor quarks and gluons. The decay is not observed. An upper exclusion limit is set to this branching fraction, corresponding to at 95% confidence level, whereas the expected upper exclusion limit is .
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- CMS Collaboration
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1774284
- Report Number(s):
- CERN-EP--2020-197; CMS-SMP--20-008; FERMILAB-PUB--21-178-CMS; arXiv:2011.06028; oai:inspirehep.net:1829749
- Journal Information:
- Physics Letters. B, Journal Name: Physics Letters. B Vol. 819; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the azimuthal anisotropy of Υ(1S) and Υ(2S) mesons in PbPb collisions at $\sqrt{s_{NN}}$ = 5.02TeV
Measurement of thet t ¯ charge asymmetry in events with highly Lorentz-boosted top quarks in pp collisions at s = 13 TeV
Search for the Higgs boson decay to a pair of electrons in proton-proton collisions ats = 13 TeV
Journal Article
·
Sat Jul 31 20:00:00 EDT 2021
· Physics Letters. B
·
OSTI ID:1647072
Measurement of the
Journal Article
·
Thu Sep 14 20:00:00 EDT 2023
· Physics Letters. B
·
OSTI ID:2217179
Search for the Higgs boson decay to a pair of electrons in proton-proton collisions at
Journal Article
·
Sat Sep 16 20:00:00 EDT 2023
· Physics Letters. B
·
OSTI ID:2217152