$Observation of $WWγ$ Production and Search for $Hγ$ Production in Proton-Proton Collisions at $\sqrt{s}$ = 13 $\mathrm{TeV}$

Observation of $WWγ$ Production and Search for $Hγ$ Production in Proton-Proton Collisions at $\sqrt{s}$ = 13 $\mathrm{TeV}

The observation of WW$\gamma$ 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...

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Veröffentlicht in:	Physical review letters 2024-03, Vol.132 (12)
Hauptverfasser:	Tumasyan, A., Delcourt, M., Khalilzadeh, A., Dobur, D., Petrov, A., Wang, Z., Giljanovic, D., Sculac, T., Starodumov, A., Abdelalim, A. A., Lehti, S., Siikonen, H., Kalipoliti, L., Contardo, D., Depasse, P., Chokheli, D., Botta, V., Sharma, A., Pooth, O., De Silva, M., Lipka, K., Mankel, R., Wichmann, K., Bein, S., Labe, F., Butz, E., Koppenhöfer, R., van der Linden, J., Anagnostou, G., Daskalakis, G., Melachroinos, G., Karapostoli, G., Evangelou, I., Kokkas, P., Szillasi, Z., Chhetri, A., Guchait, M., Dube, S., Iaselli, G., Pompili, A., Simone, F. M., Campanini, R., Primavera, F., Tosi, S., Ajmal, S., Mantovani, G., Roy Chowdhury, S., Quaranta, C., Kim, J., Lee, K., Gaile, A., De La Cruz-Burelo, E., Doroba, K., Redondo Ferrero, D. D., De Roeck, A., Gigi, D., Pierini, M., Kaestli, H. C., Rohe, T., Reichmann, M., Seidita, R., Neutelings, I., Chen, K. F., Chen, P. s., Lu, R. -S., Wachirapusitanand, V., Isik, C., Reis, T., Iles, G., Simsek, A. E., Heintz, U., Cousins, R., Giannini, L., Bryant, P., Apresyan, A., Berry, D., Cheung, H. W. K., Klijnsma, T., Ravera, F., Taylor, L., Yohay, R., Zhang, J., Cavanaugh, R., Anguiano, J., Mignerey, A. C., Stephans, G. S. F., Mariano, J., Basnet, A., Joyce, M., Chandra, S., Piperov, S., Heindl, M., Akchurin, N., Hussain, A., Neu, C., Madhusudanan Sreekala, J., Vetens, W., Golovtcov, V., Voytishin, N.
Format:	Artikel
Sprache:	eng
Schlagworte:	hadron colliders Higgs bosons photons PHYSICS OF ELEMENTARY PARTICLES AND FIELDS W & Z bosons
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Zusammenfassung:	The observation of WW$\gamma$ 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 WW$\gamma$ 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.
ISSN:	0031-9007 1079-7114