t(t)over-barH Coupling Measurement with the ATLAS Detector at the LHC

被引：0

作者：

Hadef, Asma ^{[1
]}

机构：

[1] Aix Marseille Univ, Ctr Phys Particules Marseille, CPPM, CNRS,IN2P3, Marseille, France

来源：

6TH INTERNATIONAL CONFERENCE ON NEW FRONTIERS IN PHYSICS (ICNFP 2017) | 2018年 / 182卷

关键词：

D O I：

10.1051/epjconf/201818202052

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Higgs boson was discovered on the 4th of July 2012 with a mass around 125 GeV by ATLAS and CMS experiments at LHC. Determining the Higgs properties (production and decay modes, couplings, ...) is an important part of the high-energy physics programme in this decade. A search for the Higgs boson production in association with a top quark pair (t (t) over barH) at ATLAS [1] is summarized in this paper at an unexplored center-of-mass energy of 13 TeV, which could allow a first direct measurement of the top quark Yukawa coupling and could reveal new physics. The t (t) over barH analysis in ATLAS is divided into 3 channels according to the Higgs decay modes: H -> Hadrons, H -> Leptons and H > Photons. The best-fit value of the ratio of observed and Standard Model cross sections of t (t) over barH production process, using 2015-2016 data and combining all t (t) over barH final states, is 1.8 +/- 0.7, corresponds to 2.8 sigma (1.8 sigma) observed (expected) significance.

引用

页数：10

共 50 条

[1] The t(t)over-barH analyses at the LHC
Aad, G.
Steggemann, J.
[J]. NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-BASIC TOPICS IN PHYSICS, 2008, 123 (8-9): : 1255 - 1263
[2] The associated production of t(t)over-barH in ATLAS
Manghi, F. Lasagni
[J]. NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS, 2015, 38 (01):
[3] h → μ+μ- via t(t)over-barh production at the LHC
Su, Shufang
Thomas, Brooks
[J]. PHYSICS LETTERS B, 2009, 677 (05) : 296 - 300
[4] t(t)over-barH → t(t)over-barτ+τ--toward the measurement of the top-Yukawa coupling
Gross, Eilam
Zivkovic, Lidija
[J]. EUROPEAN PHYSICAL JOURNAL C, 2009, 59 (03): : 731 - 754
[5] High Level Trigger for the t(t)over-barH channel in fully hadronic decay at LHC with the CMS detector
Benedetti, D
Fanò, L
Biasini, M
[J]. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2005, 142 : 426 - 429
[6] Observation of the t(t)over-barH production
Mellenthin, Johannes
[J]. 4TH INTERNATIONAL CONFERENCE ON PARTICLE PHYSICS AND ASTROPHYSICS (ICPPA-2018), 2019, 1390
[7] CP tests of Higgs couplings in t(t)over-barh semileptonic events at the LHC
Azevedo, D.
Onofre, A.
Filthaut, F.
Goncalo, R.
[J]. PHYSICAL REVIEW D, 2018, 98 (03)
[8] Electroweak Corrections to e+e- → ν(ν)over-barH and e+e- → t(t)over-barH
Denner, A.
Dittmaier, S.
Roth, M.
Weber, M. M.
[J]. EUROPEAN PHYSICAL JOURNAL C, 2004, 33 : S635 - S637
[9] Probing the CP nature of the top-Higgs Yukawa coupling in t(t)over-barH and tH events with H →b(b)over-bar decays using the ATLAS detector at the LHC
Aad, G.
Abbott, B.
Abbott, D. C.
Abeling, K.
Abidi, S. H.
Aboulhorma, A.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Hoffman, A. C. Abusleme
Acharya, B. S.
Achkar, B.
Adam, L.
Bourdarios, C. Adam
Adamczyk, L.
Adamek, L.
Addepalli, S. V.
Adelman, J.
Adiguzel, A.
Adorni, S.
Adye, T.
Affolder, A. A.
Afik, Y.
Agaras, M. N.
Agarwala, J.
Aggarwal, A.
Agheorghiesei, C.
Aguilar-Saavedra, J. A.
Ahmad, A.
Ahmadov, F.
Ahmed, W. S.
Ahuja, S.
Ai, X.
Aielli, G.
Aizenberg, I.
Akbiyik, M.
Akesson, T. P. A.
Akimov, A. V.
Al Khoury, K.
Alberghi, G. L.
Albert, J.
Albicocco, P.
Alconada Verzini, M. J.
Alderweireldt, S.
Aleksa, M.
Aleksandrov, I. N.
Alexa, C.
Alexopoulos, T.
Alfonsi, A.
Alfonsi, F.
[J]. PHYSICS LETTERS B, 2024, 849
[10] Central-edge asymmetry as a probe of Higgs-top coupling in t(t)over-barh production at the LHC
Li, Jinmian
Si, Zong-guo
Wu, Lei
Yue, Jason
[J]. PHYSICS LETTERS B, 2018, 779 : 72 - 76

← 1 2 3 4 5 →