Search for Higgs and Z boson decays to J/ψγ and ϒ(nS)γ with the ATLAS detector

ATLAS Collaboration; G. Aad; Juraj Bracinik; David Charlton; Andrew Chisholm; Christopher Hawkes; Stephen Hillier; Paul Newman; Konstantinos Nikolopoulos; Mark Slater; Jurgen Thomas; Paul Thompson; Peter Watkins; Alan Watson; Miriam Watson; John Wilson

doi:10.1103/PhysRevLett.114.121801

Search for Higgs and Z boson decays to J/ψγ and ϒ(nS)γ with the ATLAS detector

ATLAS Collaboration, G. Aad, Juraj Bracinik, David Charlton, Andrew Chisholm, Christopher Hawkes, Stephen Hillier, Paul Newman, Konstantinos Nikolopoulos, Mark Slater, Jurgen Thomas, Paul Thompson, Peter Watkins, Alan Watson, Miriam Watson, John Wilson

Physics and Astronomy

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Abstract

A search for the decays of the Higgs and Z bosons to J/ψγ and Υ(nS)γ (n=1,2,3) is performed with
pp collision data samples corresponding to integrated luminosities of up to 20.3 fb⁻¹ collected at √s=8 TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above expected backgrounds and 95% C.L. upper limits are placed on the branching fractions. In the J/ψγ final state the limits are 1.5×10⁻³ and 2.6×10⁻⁶ for the Higgs and
Z boson decays, respectively, while in the Υ(1S,2S,3S)γ final states the limits are (1.3,1.9,1.3)×10⁻³ and
(3.4,6.5,5.4)×10⁻⁶, respectively.

Original language	English
Article number	121801
Number of pages	19
Journal	Physical Review Letters
Volume	114
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.114.121801
Publication status	Published - 26 Mar 2015

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ATLAS Collaboration, Aad, G., Bracinik, J., Charlton, D., Chisholm, A., Hawkes, C., Hillier, S., Newman, P., Nikolopoulos, K., Slater, M., Thomas, J., Thompson, P., Watkins, P., Watson, A., Watson, M., & Wilson, J. (2015). Search for Higgs and Z boson decays to J/ψγ and ϒ(nS)γ with the ATLAS detector. Physical Review Letters, 114(12), Article 121801. https://doi.org/10.1103/PhysRevLett.114.121801

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title = "Search for Higgs and Z boson decays to J/ψγ and ϒ(nS)γ with the ATLAS detector",

abstract = "A search for the decays of the Higgs and Z bosons to J/ψγ and Υ(nS)γ (n=1,2,3) is performed with pp collision data samples corresponding to integrated luminosities of up to 20.3 fb−1 collected at √s=8 TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above expected backgrounds and 95% C.L. upper limits are placed on the branching fractions. In the J/ψγ final state the limits are 1.5×10−3 and 2.6×10−6 for the Higgs and Z boson decays, respectively, while in the Υ(1S,2S,3S)γ final states the limits are (1.3,1.9,1.3)×10−3 and (3.4,6.5,5.4)×10−6, respectively.",

author = "{ATLAS Collaboration} and G. Aad and Juraj Bracinik and David Charlton and Andrew Chisholm and Christopher Hawkes and Stephen Hillier and Paul Newman and Konstantinos Nikolopoulos and Mark Slater and Jurgen Thomas and Paul Thompson and Peter Watkins and Alan Watson and Miriam Watson and John Wilson",

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day = "26",

doi = "10.1103/PhysRevLett.114.121801",

language = "English",

volume = "114",

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ATLAS Collaboration, Aad, G, Bracinik, J , Charlton, D , Chisholm, A, Hawkes, C, Hillier, S , Newman, P , Nikolopoulos, K , Slater, M , Thomas, J , Thompson, P, Watkins, P, Watson, A , Watson, M & Wilson, J 2015, 'Search for Higgs and Z boson decays to J/ψγ and ϒ(nS)γ with the ATLAS detector', Physical Review Letters, vol. 114, no. 12, 121801. https://doi.org/10.1103/PhysRevLett.114.121801

TY - JOUR

T1 - Search for Higgs and Z boson decays to J/ψγ and ϒ(nS)γ with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Bracinik, Juraj

AU - Charlton, David

AU - Chisholm, Andrew

AU - Hawkes, Christopher

AU - Hillier, Stephen

AU - Newman, Paul

AU - Nikolopoulos, Konstantinos

AU - Slater, Mark

AU - Thomas, Jurgen

AU - Thompson, Paul

AU - Watkins, Peter

AU - Watson, Alan

AU - Watson, Miriam

AU - Wilson, John

PY - 2015/3/26

Y1 - 2015/3/26

N2 - A search for the decays of the Higgs and Z bosons to J/ψγ and Υ(nS)γ (n=1,2,3) is performed with pp collision data samples corresponding to integrated luminosities of up to 20.3 fb−1 collected at √s=8 TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above expected backgrounds and 95% C.L. upper limits are placed on the branching fractions. In the J/ψγ final state the limits are 1.5×10−3 and 2.6×10−6 for the Higgs and Z boson decays, respectively, while in the Υ(1S,2S,3S)γ final states the limits are (1.3,1.9,1.3)×10−3 and (3.4,6.5,5.4)×10−6, respectively.

AB - A search for the decays of the Higgs and Z bosons to J/ψγ and Υ(nS)γ (n=1,2,3) is performed with pp collision data samples corresponding to integrated luminosities of up to 20.3 fb−1 collected at √s=8 TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above expected backgrounds and 95% C.L. upper limits are placed on the branching fractions. In the J/ψγ final state the limits are 1.5×10−3 and 2.6×10−6 for the Higgs and Z boson decays, respectively, while in the Υ(1S,2S,3S)γ final states the limits are (1.3,1.9,1.3)×10−3 and (3.4,6.5,5.4)×10−6, respectively.

U2 - 10.1103/PhysRevLett.114.121801

DO - 10.1103/PhysRevLett.114.121801

M3 - Letter

SN - 0031-9007

VL - 114

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

M1 - 121801

ER -

Search for Higgs and Z boson decays to J/ψγ and ϒ(nS)γ with the ATLAS detector

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