Record link: 
http://hdl.handle.net/20.500.12708/207804
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Title: 
Observation of 𝑊⁢𝑊⁢𝛾 Production and Search for 𝐻⁡𝛾 Production in Proton-Proton Collisions at √𝑠=13  TeV
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Citation: 
A. Hayrapetyan, Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Chatterjee, S., Damanakis, K., Dragicevic, M., Escalante Del Valle, A., Hussain, P., Jeitler, M., Krammer, N., Liko, D., Mikulec, I., Schieck, J., Schöfbeck, R., Schwarz, D., Sonawane, M., Templ, S., … CMS Collaboration. (2024). Observation of 𝑊⁢𝑊⁢𝛾 Production and Search for 𝐻⁡𝛾 Production in Proton-Proton Collisions at √𝑠=13  TeV. Physical Review Letters, 132(12), Article 121901. https://doi.org/10.1103/PhysRevLett.132.121901
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Publisher DOI: 
10.1103/PhysRevLett.132.121901
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Publication Type: 
Article - Original Research Article
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Language: 
English
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Authors: 
A. Hayrapetyan 
Tumasyan, A. 
Adam, W 
Andrejkovic, J. W. 
Bergauer, Thomas 
Chatterjee, S. 
Damanakis, K. 
Dragicevic, M. 
Escalante Del Valle, A. 
Hussain, P. 
Jeitler, Manfred 
Krammer, N. 
Liko, D. 
Mikulec, I. 
Schieck, Jochen 
Schöfbeck, Robert 
Schwarz, D. 
Sonawane, M. 
Templ, S. 
Waltenberger, Wolfgang 
Wulz, Claudia-Elisabeth 
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Author Collaboration: 
CMS Collaboration
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Organisational Unit: 
E141-03 - Forschungsbereich Nuclear and Particle Physics 
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Journal: 
Physical Review Letters 
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ISSN: 
0031-9007
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Date (published): 
19-Mar-2024
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Number of Pages: 
20
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Publisher: 
AMER PHYSICAL SOC
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Peer reviewed: 
Yes
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Keywords: 
proton collisions
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Abstract: 
The observation of 𝑊⁢𝑊⁢𝛾 production in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of 138  fb−1 is presented. The observed (expected) significance is 5.6 (5.1) standard deviations. Events are selected by requiring exactly two leptons (one electron and one muon) of opposite charge, moderate missing transverse momentum, and a photon. The measured fiducial cross section for 𝑊⁢𝑊⁢𝛾 is 5.9±0.8⁢(stat)±0.8⁢(syst)±0.7⁢(modeling)  fb, in agreement with the next-to-leading order quantum chromodynamics prediction. The analysis is extended with a search for the associated production of the Higgs boson and a photon, which is generated by a coupling of the Higgs boson to light quarks. The result is used to constrain the Higgs boson couplings to light quarks.
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Research Areas: 
Materials Characterization: 100%
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Science Branch: 
1030 - Physik, Astronomie: 100%
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