Search for a CP-odd Higgs boson decaying to Zh in pp collisions at √s=8 TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1016/j.physletb.2015.03.054

Search for a CP-odd Higgs boson decaying to Zh in pp collisions at √s=8 TeV with the ATLAS detector

ATLAS Collaboration

Aix-Marseille Université
Homer L. Dodge Department of Physics and Astronomy
University of Oklahoma
Academia Sinica - Institute of Physics
Université Paris-Sud and CNRS/IN2P3
Azerbaijan National Academy of Sciences
University of Amsterdam
Department of Physics
Oklahoma State University
Department of Physics and Astronomy
Michigan State University
Department of Physics
University of Toronto
Raymond and Beverly Sackler School of Physics and Astronomy
Tel Aviv University
Department of Physics
Technion-Israel Institute of Technology
CERN
Department of Physics
Stockholm University
The Oskar Klein Centre
INFN Gruppo Collegato di Udine
National Institute for Nuclear Physics
Abdus Salam International Centre for Theoretical Physics
Department of Physics
King's College London
Faculty of Physics and Applied Computer Science
AGH University of Krakow
Physics Department
Brookhaven National Laboratory
Department of Physics
Northern Illinois University
Fakultät für Physik
Ludwig Maximilian University of Munich
Didcot
Institute of Physics
University of Belgrade
Laboratório de Instrumentação e Física Experimental de Partículas
Departamento de Fisica Teorica y Del Cosmos
University of Granada
Dep Fisica
NOVA University Lisbon
Albert Einstein Center for Fundamental Physics
University of Bern
Boston University
Joint Institute for Nuclear Research
Dipartimento di Fisica
University of Rome Tor Vergata
Fysiska institutionen
Lund University
International Center for Elementary Particle Physics
The University of Tokyo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Dipartimento di Fisica e Astronomia
University of Bologna
Department of Physics and Astronomy
University of Victoria BC
Université Grenoble Alpes
Instituto de Física La Plata
Horia Hulubei National Institute of Physics and Nuclear Engineering
Section de Physique
University of Geneva
Physics Department
National Technical University of Athens
The University of Chicago
School of Physics and Astronomy
University of Birmingham
Lancaster University
Oliver Lodge Laboratory
University of Liverpool
Dipartimento di Fisica
University of Naples Federico II
University of Copenhagen
Kobe University

Research output: Contribution to journal › Article › peer-review

138 Scopus citations

Abstract

A search for a heavy, CP-odd Higgs boson, A, decaying into a Z boson and a 125 GeV Higgs boson, h, with the ATLAS detector at the LHC is presented. The search uses proton–proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb⁻¹. Decays of CP-even h bosons to ττ or bb pairs with the Z boson decaying to electron or muon pairs are considered, as well as h→bb decays with the Z boson decaying to neutrinos. No evidence for the production of an A boson in these channels is found and the 95% confidence level upper limits derived for σ(gg→A)×BR(A→Zh)×BR(h→ff¯) are 0.098–0.013 pb for f=τ and 0.57–0.014 pb for f=b in a range of m_A=220–1000 GeV. The results are combined and interpreted in the context of two-Higgs-doublet models.

Original language	English
Pages (from-to)	163-183
Number of pages	21
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	744
DOIs	https://doi.org/10.1016/j.physletb.2015.03.054
State	Published - 11 May 2015
Externally published	Yes

Keywords

ATLAS
BSM Higgs boson

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10.1016/j.physletb.2015.03.054

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@article{8b644761b25c476f9608b50abc71bfad,

title = "Search for a CP-odd Higgs boson decaying to Zh in pp collisions at √s=8 TeV with the ATLAS detector",

abstract = "A search for a heavy, CP-odd Higgs boson, A, decaying into a Z boson and a 125 GeV Higgs boson, h, with the ATLAS detector at the LHC is presented. The search uses proton{\textendash}proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb−1. Decays of CP-even h bosons to ττ or bb pairs with the Z boson decaying to electron or muon pairs are considered, as well as h→bb decays with the Z boson decaying to neutrinos. No evidence for the production of an A boson in these channels is found and the 95\% confidence level upper limits derived for σ(gg→A){\texttimes}BR(A→Zh){\texttimes}BR(h→ff¯) are 0.098{\textendash}0.013 pb for f=τ and 0.57{\textendash}0.014 pb for f=b in a range of mA=220{\textendash}1000 GeV. The results are combined and interpreted in the context of two-Higgs-doublet models.",

keywords = "ATLAS, BSM Higgs boson",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and J. Abdallah and \{Abdel Khalek\}, S. and O. Abdinov and R. Aben and B. Abi and M. Abolins and AbouZeid, \{O. S.\} and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and J. Adelman and S. Adomeit and T. Adye and T. Agatonovic-Jovin and Aguilar-Saavedra, \{J. A.\} and M. Agustoni and Ahlen, \{S. P.\} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, \{T. P.A.\} and G. Akimoto and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and S. Albrand and \{Alconada Verzini\}, \{M. J.\} and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and G. Alexander and G. Alexandre and T. Alexopoulos and M. Alhroob and G. Alimonti and L. Alio and J. Alison and Allbrooke, \{B. M.M.\} and Allison, \{L. J.\} and Allport, \{P. P.\} and A. Aloisio and A. Alonso and F. Alonso and L. Yuan",

note = "Publisher Copyright: {\textcopyright} 2015",

year = "2015",

month = may,

day = "11",

doi = "10.1016/j.physletb.2015.03.054",

language = "英语",

volume = "744",

pages = "163--183",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Search for a CP-odd Higgs boson decaying to Zh in pp collisions at √s=8 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - AbouZeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Agatonovic-Jovin, T.

AU - Aguilar-Saavedra, J. A.

AU - Agustoni, M.

AU - Ahlen, S. P.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akerstedt, H.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albrand, S.

AU - Alconada Verzini, M. J.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Alimonti, G.

AU - Alio, L.

AU - Alison, J.

AU - Allbrooke, B. M.M.

AU - Allison, L. J.

AU - Allport, P. P.

AU - Aloisio, A.

AU - Alonso, A.

AU - Alonso, F.

AU - Yuan, L.

PY - 2015/5/11

Y1 - 2015/5/11

N2 - A search for a heavy, CP-odd Higgs boson, A, decaying into a Z boson and a 125 GeV Higgs boson, h, with the ATLAS detector at the LHC is presented. The search uses proton–proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb−1. Decays of CP-even h bosons to ττ or bb pairs with the Z boson decaying to electron or muon pairs are considered, as well as h→bb decays with the Z boson decaying to neutrinos. No evidence for the production of an A boson in these channels is found and the 95% confidence level upper limits derived for σ(gg→A)×BR(A→Zh)×BR(h→ff¯) are 0.098–0.013 pb for f=τ and 0.57–0.014 pb for f=b in a range of mA=220–1000 GeV. The results are combined and interpreted in the context of two-Higgs-doublet models.

AB - A search for a heavy, CP-odd Higgs boson, A, decaying into a Z boson and a 125 GeV Higgs boson, h, with the ATLAS detector at the LHC is presented. The search uses proton–proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb−1. Decays of CP-even h bosons to ττ or bb pairs with the Z boson decaying to electron or muon pairs are considered, as well as h→bb decays with the Z boson decaying to neutrinos. No evidence for the production of an A boson in these channels is found and the 95% confidence level upper limits derived for σ(gg→A)×BR(A→Zh)×BR(h→ff¯) are 0.098–0.013 pb for f=τ and 0.57–0.014 pb for f=b in a range of mA=220–1000 GeV. The results are combined and interpreted in the context of two-Higgs-doublet models.

KW - ATLAS

KW - BSM Higgs boson

UR - https://www.scopus.com/pages/publications/85040636492

U2 - 10.1016/j.physletb.2015.03.054

DO - 10.1016/j.physletb.2015.03.054

M3 - 文章

AN - SCOPUS:85040636492

SN - 0370-2693

VL - 744

SP - 163

EP - 183

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Search for a CP-odd Higgs boson decaying to Zh in pp collisions at √s=8 TeV with the ATLAS detector

Abstract

Keywords

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