Электронный каталог

Статья

Hayrapetyan, A.
Search for Heavy Neutral Higgs Bosons A and H in the tt^-Z Channel in Proton-Proton Collisions at 13 TeV / A.Hayrapetyan, S.Afanasiev, V.Alexakhin, D.Budkouski, I.Golutvin, I.Gorbunov, V.Karjavine, O.Kodolova, V.Korenkov, A.Lanev, A.Malakhov, V.Matveev, A.Nikitenko, V.Palichik, V.Perelygin, M.Savina, V.Shalaev, S.Shmatov, S.Shulha, V.Smirnov, O.Teryaev, N.Voytishin, B.S.Yuldashev, A.Zarubin, I.Zhizhin, S.Polikarpov, Z.Tsamalaidze, [CMS Collab.]. – Text : electronic // Physics Letters B. – 2025. – Vol. 866. – P. 139568. – URL: https://doi.org/10.1016/j.physletb.2025.139568. – Bibliogr.: 88.

A direct search for new heavy neutral Higgs bosons A and H in the tt^-Z channel is presented, targeting the process pp *> A *> ZH with H *> tt^-. For the first time, the channel with decays of the Z boson to muons or electrons in association with all-hadronic decays of the tt^- system is targeted. The analysis uses proton-proton collision data collected at the CERN LHC with the CMS experiment at *%𝑠 = 13 TeV, which correspond to an integrated luminosity of 138 fb&sup(−1). No signal is observed. Upper limits on the product of the cross section and branching fractions are derived for narrow resonances A and H with masses up to 2100 and 2000GeV, respectively, assuming A boson production through gluon fusion. The results are also interpreted within two-Higgs-doublet models, where A and H are CP-odd and CP-even states, respectively, complementing and substantially extending the reach of previous searches



Спец.(статьи,препринты) = С 346.6д1 - Чармоний, боттомоний, топ-кварк. Очарованные частицы и др. резонансы из тяжелых кварков
Спец.(статьи,препринты) = С 346.6е2 - Промежуточные бозоны
ОИЯИ = ОИЯИ (JINR)2025