E-viri
Recenzirano
Odprti dostop
-
Ai, X.; Alexopoulos, T.; Aparo, M.A.; Assamagan, K.; Bandieramonte, M.; Bartos, P.; Boudreau, J.; Boyd, J.; Boye, D.; Burdin, S.; Canale, V.; Carlino, G.; Casado, M.P.; Chen, J.; Chiarelli, G.; Coimbra, A.E.C.; Delitzsch, C.M.; Dell'Acqua, A.; Di Ciaccio, L.; Drechsler, E.; Dreyer, E.; Eigen, G.; Evans, H.; Falda Ulhoa Coelho, L.F.; Feickert, M.; Fenton, M.J.; Forti, A.C.; Freund, W.S.; Frid, Y.Y.; Ghneimat, M.; Gonzalez-Sevilla, S.; Grancagnolo, S.; Gutierrez Zagazeta, L.F.; Hanif, H.; Hofer, J.; Hopkins, W.H.; Huang, Y.; Jäkel, G.; Jiang, Y.; Kahn, A.; Kang, N.J.; Köneke, K.; Kourkoumeli-Charalampidi, A.; Krasny, M.W.; Krizka, K.; Kroha, H.; Leone, S.; Lu, Y.J.; Merola, L.; Mitra, A.; Miyazaki, Y.; Moser, B.; Nanjo, H.; Ngair, B.; Nicolaidou, R.; Nisati, A.; Ohm, C.C.; Oliveira Goncalves, D.; Paredes Hernandez, D.; Pernegger, H.; Pinheiro Pereira, B.C.; Pizzi, D.A.; Pompa Pacchi, E.; Qichen, D.; Reeves, K.; Rezanova, O.L.; Rizatdinova, F.; Rosati, S.; Safai Tehrani, F.; Sahinsoy, M.; Sardain, J.; Sato, K.; Sawada, R.; Scuri, F.; Sekula, S.J.; Sivoklokov, S.Yu; Skaf, A.; Solovieva, K.; Sopkova, F.; Soumaimi, Z.; Stelzer, B.; Strom, L.R.; Sun, S.; Sunneborn Gudnadottir, O.; Taffard, A.; Tapprogge, S.; Tartarelli, G.F.; Vadla, K.O.H.; Vickey Boeriu, O.E.; Watson, M.F.; Windischhofer, P.J.; Wu, Y.; Yang, H.T.; Yang, X.; Yorita, K.; Zaid, E.; Zakareishvili, T.; Zeitnitz, C.; Zhai, M.; Zhulanov, V.
Physics letters. B, 12/2023, Letnik: 847Journal Article
Searches for the exclusive decays of the Higgs boson to an ω meson and a photon or a K⁎ meson and a photon can probe flavour-conserving and flavour-violating Higgs boson couplings to light quarks, respectively. Searches for these decays, along with the analogous Z boson decay to an ω meson and a photon, are performed with a pp collision data sample corresponding to integrated luminosities of up to 134 fb−1 collected at s=13 TeV with the ATLAS detector at the CERN Large Hadron Collider. The obtained 95% confidence-level upper limits on the respective branching fractions are B(H→ωγ)<5.5×10−4, B(H→K⁎γ)<2.2×10−4 and B(Z→ωγ)<3.9×10−6. The limits for H→ωγ and Z→ωγ are 370 times and 140 times the Standard Model expected values, respectively. The result for Z→ωγ corresponds to a two-orders-of-magnitude improvement over the limit obtained by the DELPHI experiment at LEP.
