Searches for exclusive Higgs boson decays into D⁎γ and Z boson decays into D0γ and Ks                      0γ in pp collisions at s=13TeV with the ATLAS detector

The ATLAS collaboration

doi:10.1016/j.physletb.2024.138762

Searches for exclusive Higgs boson decays into D^⁎γ and Z boson decays into D⁰γ and K_s ⁰γ in pp collisions at s=13TeV with the ATLAS detector

The ATLAS collaboration

Aix-Marseille Université
University of Bergen
University of Oklahoma
University of Göttingen
TU Dortmund University
United States Department of Energy
Southern Methodist University
Mohammed V University in Rabat
Tel Aviv University
Technion-Israel Institute of Technology
New York University
National Institute for Nuclear Physics
Abdus Salam International Centre for Theoretical Physics
Heidelberg University
Université Savoie Mont Blanc
AGH University of Krakow
Brandeis University
University of Manchester
Northern Illinois University
Istanbul University
Rutherford Appleton Laboratory
University of California at Santa Cruz
The University of Chicago
Institute for High Energy Physics
University of Pavia
Johannes Gutenberg University Mainz
Alexandru Ioan Cuza University of Iaşi
CERN
McGill University
Royal Holloway University of London
Zhengzhou University
University of Rome Tor Vergata
University of Valencia
University of Hassan II Casablanca
Weizmann Institute of Science
Lund University
Waseda University
University of Bonn
Bogazici University
Columbia University

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Abstract

Searches for exclusive decays of the Higgs boson into D^⁎γ and of the Z boson into D⁰γ and K_s ⁰γ can probe flavour-violating Higgs boson and Z boson couplings to light quarks. Searches for these decays are performed with a pp collision data sample corresponding to an integrated luminosity of 136.3 fb⁻¹ collected at s=13TeV between 2016–2018 with the ATLAS detector at the CERN Large Hadron Collider. In the D^⁎γ and D⁰γ channels, the observed (expected) 95% confidence-level upper limits on the respective branching fractions are B(H→D^⁎γ)<1.0(1.2)×10⁻³, B(Z→D⁰γ)<4.0(3.4)×10⁻⁶, while the corresponding results in the K_s ⁰γ channel are B(Z→K_s ⁰γ)<3.1(3.0)×10⁻⁶.

Original language	English
Article number	138762
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	855
DOIs	https://doi.org/10.1016/j.physletb.2024.138762
State	Published - Aug 1 2024

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10.1016/j.physletb.2024.138762

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@article{6b358db7205a43c5b8bcab7fbe9e9389,

title = "Searches for exclusive Higgs boson decays into D⁎γ and Z boson decays into D0γ and Ks 0γ in pp collisions at s=13TeV with the ATLAS detector",

abstract = "Searches for exclusive decays of the Higgs boson into D⁎γ and of the Z boson into D0γ and Ks 0γ can probe flavour-violating Higgs boson and Z boson couplings to light quarks. Searches for these decays are performed with a pp collision data sample corresponding to an integrated luminosity of 136.3 fb−1 collected at s=13TeV between 2016–2018 with the ATLAS detector at the CERN Large Hadron Collider. In the D⁎γ and D0γ channels, the observed (expected) 95\% confidence-level upper limits on the respective branching fractions are B(H→D⁎γ)<1.0(1.2)×10−3, B(Z→D0γ)<4.0(3.4)×10−6, while the corresponding results in the Ks 0γ channel are B(Z→Ks 0γ)<3.1(3.0)×10−6.",

author = "\{The ATLAS collaboration\} and G. Aad and E. Aakvaag and B. Abbott and K. Abeling and Abicht, \{N. J.\} and Abidi, \{S. H.\} and M. Aboelela and A. Aboulhorma and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and A. Ackermann and \{Adam Bourdarios\}, C. and L. Adamczyk and Addepalli, \{S. V.\} and Addison, \{M. J.\} and J. Adelman and A. Adiguzel and T. Adye and Affolder, \{A. A.\} and Y. Afik and Agaras, \{M. N.\} and J. Agarwala and A. Aggarwal and C. Agheorghiesei and A. Ahmad and F. Ahmadov and Ahmed, \{W. S.\} and S. Ahuja and X. Ai and G. Aielli and A. Aikot and \{Ait Tamlihat\}, M. and B. Aitbenchikh and I. Aizenberg and M. Akbiyik and {\AA}kesson, \{T. P.A.\} and Akimov, \{A. V.\} and D. Akiyama and Akolkar, \{N. N.\} and S. Aktas and \{Al Khoury\}, K. and Alberghi, \{G. L.\} and H. Arnold and V. Dao and J. Hobbs and J. Jia and Piacquadio, \{Nicola Giacinto\} and D. Tsybychev",

note = "Publisher Copyright: {\textcopyright} 2024 The Author(s)",

year = "2024",

month = aug,

day = "1",

doi = "10.1016/j.physletb.2024.138762",

language = "English",

volume = "855",

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

issn = "0370-2693",

}

Searches for exclusive Higgs boson decays into D^⁎γ and Z boson decays into D⁰γ and K_s ⁰γ in pp collisions at s=13TeV with the ATLAS detector. / The ATLAS collaboration.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 855, 138762, 01.08.2024.

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

TY - JOUR

T1 - Searches for exclusive Higgs boson decays into D⁎γ and Z boson decays into D0γ and Ks 0γ in pp collisions at s=13TeV with the ATLAS detector

AU - The ATLAS collaboration

AU - Aad, G.

AU - Aakvaag, E.

AU - Abbott, B.

AU - Abeling, K.

AU - Abicht, N. J.

AU - Abidi, S. H.

AU - Aboelela, M.

AU - Aboulhorma, A.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Ackermann, A.

AU - Adam Bourdarios, C.

AU - Adamczyk, L.

AU - Addepalli, S. V.

AU - Addison, M. J.

AU - Adelman, J.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agaras, M. N.

AU - Agarwala, J.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Ahmad, A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ahuja, S.

AU - Ai, X.

AU - Aielli, G.

AU - Aikot, A.

AU - Ait Tamlihat, M.

AU - Aitbenchikh, B.

AU - Aizenberg, I.

AU - Akbiyik, M.

AU - Åkesson, T. P.A.

AU - Akimov, A. V.

AU - Akiyama, D.

AU - Akolkar, N. N.

AU - Aktas, S.

AU - Al Khoury, K.

AU - Alberghi, G. L.

AU - Arnold, H.

AU - Dao, V.

AU - Hobbs, J.

AU - Jia, J.

AU - Piacquadio, Nicola Giacinto

AU - Tsybychev, D.

PY - 2024/8/1

Y1 - 2024/8/1

N2 - Searches for exclusive decays of the Higgs boson into D⁎γ and of the Z boson into D0γ and Ks 0γ can probe flavour-violating Higgs boson and Z boson couplings to light quarks. Searches for these decays are performed with a pp collision data sample corresponding to an integrated luminosity of 136.3 fb−1 collected at s=13TeV between 2016–2018 with the ATLAS detector at the CERN Large Hadron Collider. In the D⁎γ and D0γ channels, the observed (expected) 95% confidence-level upper limits on the respective branching fractions are B(H→D⁎γ)<1.0(1.2)×10−3, B(Z→D0γ)<4.0(3.4)×10−6, while the corresponding results in the Ks 0γ channel are B(Z→Ks 0γ)<3.1(3.0)×10−6.

AB - Searches for exclusive decays of the Higgs boson into D⁎γ and of the Z boson into D0γ and Ks 0γ can probe flavour-violating Higgs boson and Z boson couplings to light quarks. Searches for these decays are performed with a pp collision data sample corresponding to an integrated luminosity of 136.3 fb−1 collected at s=13TeV between 2016–2018 with the ATLAS detector at the CERN Large Hadron Collider. In the D⁎γ and D0γ channels, the observed (expected) 95% confidence-level upper limits on the respective branching fractions are B(H→D⁎γ)<1.0(1.2)×10−3, B(Z→D0γ)<4.0(3.4)×10−6, while the corresponding results in the Ks 0γ channel are B(Z→Ks 0γ)<3.1(3.0)×10−6.

UR - https://www.scopus.com/pages/publications/85195456110

U2 - 10.1016/j.physletb.2024.138762

DO - 10.1016/j.physletb.2024.138762

M3 - Article

AN - SCOPUS:85195456110

SN - 0370-2693

VL - 855

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

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

M1 - 138762

ER -

Searches for exclusive Higgs boson decays into D^⁎γ and Z boson decays into D⁰γ and K_s ⁰γ in pp collisions at s=13TeV with the ATLAS detector

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