A measurement of the Higgs boson mass in the diphoton decay channel

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Flechl, M.; Frühwirth, R.; Caminada, L.; Deiters, K.; Erdmann, W.; Horisberger, R.; Ingram, Q.; Kaestli, H.C.; Kotlinski, D.; Langenegger, U.; Rohe, T.; Trembath-reichert, S.

doi:10.1016/j.physletb.2020.135425

A measurement of the Higgs boson mass in the diphoton decay channel

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Dragicevic M, Erö J, Escalante Del Valle A, Flechl M, Frühwirth R, Caminada L, Deiters K, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Langenegger U, Rohe T, Trembath-reichert S, et al.

Citation

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Dragicevic, M., … Trembath-reichert, S. (2020). A measurement of the Higgs boson mass in the diphoton decay channel. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 805, 135425 (25 pp.). https://doi.org/10.1016/j.physletb.2020.135425

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:32835

A measurement of the mass of the Higgs boson in the diphoton decay channel is presented. This analysis is based on 35.9fb^-1 of proton-proton collision data collected during the 2016 LHC running period, with the CMS detector at a centre-of-mass energy of 13 TeV. A refined detector calibration and new analysis techniques have been used to improve the precision of this measurement. The Higgs boson mass is measured to be m_H = 125.78 ± 0.26 GeV. This is combined with a measurement of m_H already performed in the H → ZZ → 4ℓ decay channel using the same data set, giving m_H = 125.46 ± 0.16 GeV. This result, when further combined with an earlier measurement of m_H using data collected in 2011 and 2012 with the CMS detector, gives a value for the Higgs boson mass of m_H = 125.38 ± 0.14 GeV. This is currently the most precise measurement of the mass of the Higgs boson.