Search for a Higgs boson decaying into γ⁎γ→ℓℓγ with low dilepton mass in pp collisions at √ s = 8 TeV
© 2015 The Authors. A search is described for a Higgs boson decaying into two photons, one of which has an internal conversion to a muon or an electron pair (ℓℓγ). The analysis is performed using proton-proton collision data recorded with the CMS detector at the LHC at a centre-of-mass energy of 8 T...
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| Format: | Article |
| Language: | English |
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Elsevier BV
2021
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| Online Access: | https://hdl.handle.net/1721.1/134610 |
| _version_ | 1826216550764380160 |
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| author | The CMS Collaboration |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics The CMS Collaboration |
| author_sort | The CMS Collaboration |
| collection | MIT |
| description | © 2015 The Authors. A search is described for a Higgs boson decaying into two photons, one of which has an internal conversion to a muon or an electron pair (ℓℓγ). The analysis is performed using proton-proton collision data recorded with the CMS detector at the LHC at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb-1. The events selected have an opposite-sign muon or electron pair and a high transverse momentum photon. No excess above background has been found in the three-body invariant mass range 120<mℓℓγ<150 GeV, and limits have been derived for the Higgs boson production cross section times branching fraction for the decay H→γ*γ→ℓℓγ, where the dilepton invariant mass is less than 20 GeV. For a Higgs boson with mH=125 GeV, a 95% confidence level (CL) exclusion observed (expected) limit is 6.7 (5.9-1.8+2.8) times the standard model prediction. Additionally, an upper limit at 95% CL on the branching fraction of H→(J/ψ)γ for the 125 GeV Higgs boson is set at 1.5×10-3. |
| first_indexed | 2024-09-23T16:49:07Z |
| format | Article |
| id | mit-1721.1/134610 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:49:07Z |
| publishDate | 2021 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1346102023-01-06T17:27:48Z Search for a Higgs boson decaying into γ⁎γ→ℓℓγ with low dilepton mass in pp collisions at √ s = 8 TeV The CMS Collaboration Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science © 2015 The Authors. A search is described for a Higgs boson decaying into two photons, one of which has an internal conversion to a muon or an electron pair (ℓℓγ). The analysis is performed using proton-proton collision data recorded with the CMS detector at the LHC at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 19.7 fb-1. The events selected have an opposite-sign muon or electron pair and a high transverse momentum photon. No excess above background has been found in the three-body invariant mass range 120<mℓℓγ<150 GeV, and limits have been derived for the Higgs boson production cross section times branching fraction for the decay H→γ*γ→ℓℓγ, where the dilepton invariant mass is less than 20 GeV. For a Higgs boson with mH=125 GeV, a 95% confidence level (CL) exclusion observed (expected) limit is 6.7 (5.9-1.8+2.8) times the standard model prediction. Additionally, an upper limit at 95% CL on the branching fraction of H→(J/ψ)γ for the 125 GeV Higgs boson is set at 1.5×10-3. 2021-10-27T20:05:45Z 2021-10-27T20:05:45Z 2016 2019-05-14T12:29:47Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134610 Khachatryan, V., et al. "Search for a Higgs Boson Decaying into Gamma*Gamma -> Ll Gamma with Low Dilepton Mass in Pp Collisions at Root S=8 Tev." Physics Letters B 753 (2016): 341-62. en 10.1016/J.PHYSLETB.2015.12.039 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Elsevier BV Elsevier |
| spellingShingle | The CMS Collaboration Search for a Higgs boson decaying into γ⁎γ→ℓℓγ with low dilepton mass in pp collisions at √ s = 8 TeV |
| title | Search for a Higgs boson decaying into γ⁎γ→ℓℓγ with low dilepton mass in pp collisions at √ s = 8 TeV |
| title_full | Search for a Higgs boson decaying into γ⁎γ→ℓℓγ with low dilepton mass in pp collisions at √ s = 8 TeV |
| title_fullStr | Search for a Higgs boson decaying into γ⁎γ→ℓℓγ with low dilepton mass in pp collisions at √ s = 8 TeV |
| title_full_unstemmed | Search for a Higgs boson decaying into γ⁎γ→ℓℓγ with low dilepton mass in pp collisions at √ s = 8 TeV |
| title_short | Search for a Higgs boson decaying into γ⁎γ→ℓℓγ with low dilepton mass in pp collisions at √ s = 8 TeV |
| title_sort | search for a higgs boson decaying into γ γ llγ with low dilepton mass in pp collisions at √ s 8 tev |
| url | https://hdl.handle.net/1721.1/134610 |
| work_keys_str_mv | AT thecmscollaboration searchforahiggsbosondecayingintoggllgwithlowdileptonmassinppcollisionsats8tev |