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Search for new light gauge bosons in Higgs boson decays to four-lepton final states in pp collisions at s =8 TeV with the ATLAS detector at the LHC

Publication ,  Journal Article
Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Aben, R; Abolins, M; Abouzeid, OS; Abramowicz, H; Abreu, H; Abreu, R; Abulaiti, Y; Acharya, BS ...
Published in: Physical Review D - Particles, Fields, Gravitation and Cosmology
November 3, 2015

This paper presents a search for Higgs bosons decaying to four leptons, either electrons or muons, via one or two light exotic gauge bosons Zd, H→ZZd→4 or H→ZdZd→4. The search was performed using pp collision data corresponding to an integrated luminosity of about 20 fb-1 at the center-of-mass energy of s=8 TeV recorded with the ATLAS detector at the Large Hadron Collider. The observed data are well described by the Standard Model prediction. Upper bounds on the branching ratio of H→ZZd→4 and on the kinetic mixing parameter between the Zd and the Standard Model hypercharge gauge boson are set in the range (1-9)×10-5 and (4-17)×10-2 respectively, at 95% confidence level assuming the Standard Model branching ratio of H→ZZ∗→4, for Zd masses between 15 and 55 GeV. Upper bounds on the effective mass mixing parameter between the Z and the Zd are also set using the branching ratio limits in the H→ZZd→4 search, and are in the range (1.5-8.7)×10-4 for 15

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Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

EISSN

1550-2368

ISSN

1550-7998

Publication Date

November 3, 2015

Volume

92

Issue

9

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

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Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Abolins, M., … Artamonov, A. (2015). Search for new light gauge bosons in Higgs boson decays to four-lepton final states in pp collisions at s =8 TeV with the ATLAS detector at the LHC. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92(9). https://doi.org/10.1103/PhysRevD.92.092001
Aad, G., B. Abbott, J. Abdallah, O. Abdinov, R. Aben, M. Abolins, O. S. Abouzeid, et al. “Search for new light gauge bosons in Higgs boson decays to four-lepton final states in pp collisions at s =8 TeV with the ATLAS detector at the LHC.” Physical Review D - Particles, Fields, Gravitation and Cosmology 92, no. 9 (November 3, 2015). https://doi.org/10.1103/PhysRevD.92.092001.
Aad G, Abbott B, Abdallah J, Abdinov O, Aben R, Abolins M, et al. Search for new light gauge bosons in Higgs boson decays to four-lepton final states in pp collisions at s =8 TeV with the ATLAS detector at the LHC. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015 Nov 3;92(9).
Aad, G., et al. “Search for new light gauge bosons in Higgs boson decays to four-lepton final states in pp collisions at s =8 TeV with the ATLAS detector at the LHC.” Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 92, no. 9, Nov. 2015. Scopus, doi:10.1103/PhysRevD.92.092001.
Aad G, Abbott B, Abdallah J, Abdinov O, Aben R, Abolins M, Abouzeid OS, Abramowicz H, Abreu H, Abreu R, Abulaiti Y, Acharya BS, Adamczyk L, Adams DL, Adelman J, Adomeit S, Adye T, Affolder AA, Agatonovic-Jovin T, Aguilar-Saavedra JA, Ahlen SP, Ahmadov F, Aielli G, Akerstedt H, Åkesson TPA, Akimoto G, Akimov AV, Alberghi GL, Albert J, Albrand S, Alconada Verzini MJ, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexopoulos T, Alhroob M, Alimonti G, Alio L, Alison J, Alkire SP, Allbrooke BMM, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Altheimer A, Alvarez Gonzalez B, Álvarez Piqueras D, Alviggi MG, Amadio BT, Amako K, Amaral Coutinho Y, Amelung C, Amidei D, Amor Dos Santos SP, Amorim A, Amoroso S, Amram N, Amundsen G, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anders JK, Anderson KJ, Andreazza A, Andrei V, Angelidakis S, Angelozzi I, Anger P, Angerami A, Anghinolfi F, Anisenkov AV, Anjos N, Annovi A, Antonelli M, Antonov A, Antos J, Anulli F, Aoki M, Aperio Bella L, Arabidze G, Arai Y, Araque JP, Arce ATH, Arduh FA, Arguin JF, Argyropoulos S, Arik M, Armbruster AJ, Arnaez O, Arnal V, Arnold H, Arratia M, Arslan O, Artamonov A. Search for new light gauge bosons in Higgs boson decays to four-lepton final states in pp collisions at s =8 TeV with the ATLAS detector at the LHC. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015 Nov 3;92(9).

Published In

Physical Review D - Particles, Fields, Gravitation and Cosmology

DOI

EISSN

1550-2368

ISSN

1550-7998

Publication Date

November 3, 2015

Volume

92

Issue

9

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences