Measurement of the VH,H → ττ process with the ATLAS detector at 13 TeV
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Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier B.V.
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
A measurement of the Standard Model Higgs boson produced in association with a W or Z boson and decaying into a pair of τ-leptons is presented. This search is based on proton-proton collision data collected at s=13 TeV by the ATLAS experiment at the LHC corresponding to an integrated luminosity of 140 fb−1. For the Higgs boson candidate, only final states with at least one τ-lepton decaying hadronically (τ→hadrons+ντ) are considered. For the vector bosons, only leptonic decay channels are considered: Z→ℓℓ and W→ℓνℓ, with ℓ=e,μ. An excess of events over the expected background is found with an observed (expected) significance of 4.2 (3.6) standard deviations, providing evidence of the Higgs boson produced in association with a vector boson and decaying into a pair of τ-leptons. The ratio of the measured cross-section to the Standard Model prediction is μVHττ=1.28−0.29+0.30(stat.)−0.21+0.25(syst.). This result represents the most accurate measurement of the VH(ττ) process achieved to date. © 2024 The Author(s)
Açıklama
Anahtar Kelimeler
Kaynak
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
855
Sayı
Künye
Aad, G., Aakvaag, E., Abbott, B. K., Abeling, K., Abicht, N. J., Abidi, H., ... & Balakrishnan, V. (2024). Evidence for the $ VH, H\rightarrow\tau\tau $ process with the ATLAS detector in Run 2. Phys. Lett. B, 855, 138817.
