SearchSearch for exclusive Higgs and Z boson decays to ϕγ and ργ with the ATLAS detector for exclusive Higgs and Z boson decays to ϕγ and ργ with the ATLAS detector
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A search for the exclusive decays of the Higgs and Z bosons to a ϕ or ρ meson and a photon is performed with a pp collision data sample corresponding to an integrated luminosity of up to 35.6 fb−1 collected at 𝑠√=13 TeV with the ATLAS detector at the CERN Large Hadron Collider. These decays have been suggested as a probe of the Higgs boson couplings to light quarks. No significant excess of events is observed above the background, as expected from the Standard Model. Upper limits at 95% confidence level were obtained on the branching fractions of the Higgs boson decays to ϕγ and ργ of 4.8 × 10−4 and 8.8 × 10−4, respectively. The corresponding 95% confidence level upper limits for the Z boson decays are 0.9 × 10−6 and 25 × 10−6 for ϕγ and ργ, respectively.
CitationAaboud M, Aad G, Abbott B, Abdinov OBo, Abeloos B, Abidi SH, AbouZeid H, Abraham NL, Abramowicz H, Abreu H, Buanes T, Dale Ø, Eigen G, Liebig W, Lipniacka A, Martin dit Latour B, Mæland S, Stugu B, Yang Z, Zalieckas J, Bugge MK, Cameron DG, Catmore JR, Feigl S, Franconi L, Garonne V, Gjelsten BK, Gramstad E, Morisbak V, Oppen H, Ould-Saada F, Raddum SH, Read AL, Røhne OM, Sandaker H, Serfon C, Stapnes S, Vadla KOH, Abreu RF, Abulaiti Y, Acharya BS, Adachi S, Adamczyk L, Adelman J, Adersberger M, Adye T, Affolder AA, Afik Y, Agatonovic-Jovin T, Agheorghiesei C, ATLAS C. Search for exclusive Higgs and Z boson decays to ϕγ and ργ with the ATLAS detector. Journal of High Energy Physics (JHEP). 2018;2018:127(7):1-37
PublisherSpringer Berlin Heidelberg
Copyright The Author(s) 2018