Szczegóły publikacji

Autorzy (2362)

• AGHAvati Valentina
• AGHGrzanka Leszek
• AGHMalawski Maciej
• Hayrapetyan Aram

Dane bibliometryczne

ID BaDAP	153378
Data dodania do BaDAP	2024-07-22
Tekst źródłowy	URL
DOI	10.1140/epjc/s10052-024-12727-4
Rok publikacji	2024
Typ publikacji	artykuł w czasopiśmie
Otwarty dostęp
Creative Commons
Czasopismo/seria	European Physical Journal, C

Abstract

A search for exotic decays of the Higgs boson (H) with a mass of 125GeV to a pair of light pseudoscalars a1 is performed in final states where one pseudoscalar decays to two b quarks and the other to a pair of muons or τ leptons. A data sample of proton–proton collisions at s=13TeV corresponding to an integrated luminosity of 138fb-1 recorded with the CMS detector is analyzed. No statistically significant excess is observed over the standard model backgrounds. Upper limits are set at 95% confidence level (CL) on the Higgs boson branching fraction to μμbb and to ττbb, via a pair of a1s. The limits depend on the pseudoscalar mass ma1 and are observed to be in the range (0.17–3.3) ×10-4 and (1.7–7.7) ×10-2 in the μμbb and ττbb final states, respectively. In the framework of models with two Higgs doublets and a complex scalar singlet (2HDM+S), the results of the two final states are combined to determine upper limits on the branching fraction B(H→a1a1→ℓℓbb) at 95% CL, with ℓ being a muon or a τ lepton. For different types of 2HDM+S, upper bounds on the branching fraction B(H→a1a1) are extracted from the combination of the two channels. In most of the Type II 2HDM+S parameter space, B(H→a1a1) values above 0.23 are excluded at 95% CL for ma1 values between 15 and 60GeV.

Publikacje, które mogą Cię zainteresować

artykuł

#91241Data dodania: 2.9.2015

Zaznacz do drukuSearch for a new resonance decaying to a W or Z boson and a Higgs boson in the $\ell\ell/\ell\nu/\nu\nu + b\bar{b}$ final states with the ATLAS detector / G. Aad, [et al.], L. ADAMCZYK, [et al.], T. BOŁD, [et al.], W. DĄBROWSKI, [et al.], M. DYNDAŁ, [et al.], I. GRABOWSKA-BOŁD, [et al.], D. KISIELEWSKA, [et al.], S. KOPERNY, [et al.], T. Z. KOWALSKI, [et al.], B. MINDUR, [et al.], M. PRZYBYCIEŃ, [et al.], A. ZEMŁA, [et al.] // The European Physical Journal. C, Particles and Fields ; ISSN 1434-6044. — 2015 — vol. 75 iss. 6 art. no. 263, s. 1–21. — Bibliogr. s. 8, Abstr.

Szczegóły

artykuł

#134472Data dodania: 14.6.2021

Zaznacz do drukuSearch for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the $\ell\ell bb$ and $\ell\ell WW$ final states in pp collisions at $\sqrt{s}$=13 TeV with the ATLAS detector / G. Aad, [et al.], L. ADAMCZYK, [et al.], T. BOŁD, [et al.], W. DĄBROWSKI, [et al.], I. GRABOWSKA-BOŁD, [et al.], K. W. JANAS, [et al.], P. A. JANUS, [et al.], S. KOPERNY, [et al.], I. K. ŁAKOMIEC, [et al.], K. MAJ, [et al.], B. MINDUR, [et al.], A. OGRODNIK, [et al.], P. PALNI, [et al.], M. PRZYBYCIEŃ, [et al.] // The European Physical Journal. C, Particles and Fields ; ISSN 1434-6044. — 2021 — vol. 81 iss. 5 art. no. 396, s. 1–36. — Bibliogr. s. 19–22, Abstr. — Publikacja dostępna online od: 2021-05-07

Szczegóły