Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector

G. Aad; B. Abbott; Mogens Dam; Jørgen Beck Hansen; Peter Henrik Hansen; John Renner Hansen; Jørn Dines Hansen; Simon Johann Franz Heisterkamp; Morten Dam Jørgensen; Esben Bryndt Klinkby; Nele Maria Philomena Boelaert; Björn Stefan Nilsson; Sascha Mehlhase; Troels Christian Petersen; Stefania Xella; Ask Emil Løvschall-Jensen

doi:10.1140/epjc/s10052-012-2157-0

Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector

G. Aad, B. Abbott, Mogens Dam, Jørgen Beck Hansen, Peter Henrik Hansen, John Renner Hansen, Jørn Dines Hansen, Simon Johann Franz Heisterkamp, Morten Dam Jørgensen, Esben Bryndt Klinkby, Nele Maria Philomena Boelaert, Björn Stefan Nilsson, Sascha Mehlhase, Troels Christian Petersen, Stefania Xella, Ask Emil Løvschall-Jensen

Experimental Particle Physics

15 Citations (Scopus)

Abstract

A search for a fermiophobic Higgs boson using diphoton events produced in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV is performed using data corresponding to an integrated luminosity of 4.9 fb⁻¹collected by the ATLAS experiment at the Large Hadron Collider. A specific benchmark model is considered where all the fermion couplings to the Higgs boson are set to zero and the bosonic couplings are kept at the Standard Model values (fermiophobic Higgs model). The largest excess with respect to the background-only hypothesis is found at 125.5 GeV, with a local significance of 2.9 standard deviations, which reduces to 1.6 standard deviations when taking into account the look-elsewhere effect. The data exclude the fermiophobic Higgs model in the ranges 110.0–118.0 GeV and 119.5–121.0 GeV at 95 % confidence level.

Original language	English
Journal	European Physical Journal C
Volume	72
Issue number	9
Pages (from-to)	2157
ISSN	1434-6044
DOIs	https://doi.org/10.1140/epjc/s10052-012-2157-0
Publication status	Published - 1 Sept 2012

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Aad, G., Abbott, B., Dam, M., Hansen, J. B., Hansen, P. H., Hansen, J. R., Hansen, J. D., Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Boelaert, N. M. P., Nilsson, B. S., Mehlhase, S., Petersen, T. C., Xella, S., & Løvschall-Jensen, A. E. (2012). Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector. European Physical Journal C, 72(9), 2157. https://doi.org/10.1140/epjc/s10052-012-2157-0

Aad, G, Abbott, B, Dam, M , Hansen, JB , Hansen, PH , Hansen, JR , Hansen, JD, Heisterkamp, SJF, Jørgensen, MD, Klinkby, EB, Boelaert, NMP, Nilsson, BS, Mehlhase, S, Petersen, TC , Xella, S & Løvschall-Jensen, AE 2012, 'Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector', European Physical Journal C, vol. 72, no. 9, pp. 2157. https://doi.org/10.1140/epjc/s10052-012-2157-0

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title = "Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector",

abstract = "A search for a fermiophobic Higgs boson using diphoton events produced in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV is performed using data corresponding to an integrated luminosity of 4.9 fb−1collected by the ATLAS experiment at the Large Hadron Collider. A specific benchmark model is considered where all the fermion couplings to the Higgs boson are set to zero and the bosonic couplings are kept at the Standard Model values (fermiophobic Higgs model). The largest excess with respect to the background-only hypothesis is found at 125.5 GeV, with a local significance of 2.9 standard deviations, which reduces to 1.6 standard deviations when taking into account the look-elsewhere effect. The data exclude the fermiophobic Higgs model in the ranges 110.0–118.0 GeV and 119.5–121.0 GeV at 95 % confidence level.",

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T1 - Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector

AU - Aad, G.

AU - Abbott, B.

AU - Dam, Mogens

AU - Hansen, Jørgen Beck

AU - Hansen, Peter Henrik

AU - Hansen, John Renner

AU - Hansen, Jørn Dines

AU - Heisterkamp, Simon Johann Franz

AU - Jørgensen, Morten Dam

AU - Klinkby, Esben Bryndt

AU - Boelaert, Nele Maria Philomena

AU - Nilsson, Björn Stefan

AU - Mehlhase, Sascha

AU - Petersen, Troels Christian

AU - Xella, Stefania

AU - Løvschall-Jensen, Ask Emil

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N2 - A search for a fermiophobic Higgs boson using diphoton events produced in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV is performed using data corresponding to an integrated luminosity of 4.9 fb−1collected by the ATLAS experiment at the Large Hadron Collider. A specific benchmark model is considered where all the fermion couplings to the Higgs boson are set to zero and the bosonic couplings are kept at the Standard Model values (fermiophobic Higgs model). The largest excess with respect to the background-only hypothesis is found at 125.5 GeV, with a local significance of 2.9 standard deviations, which reduces to 1.6 standard deviations when taking into account the look-elsewhere effect. The data exclude the fermiophobic Higgs model in the ranges 110.0–118.0 GeV and 119.5–121.0 GeV at 95 % confidence level.

AB - A search for a fermiophobic Higgs boson using diphoton events produced in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV is performed using data corresponding to an integrated luminosity of 4.9 fb−1collected by the ATLAS experiment at the Large Hadron Collider. A specific benchmark model is considered where all the fermion couplings to the Higgs boson are set to zero and the bosonic couplings are kept at the Standard Model values (fermiophobic Higgs model). The largest excess with respect to the background-only hypothesis is found at 125.5 GeV, with a local significance of 2.9 standard deviations, which reduces to 1.6 standard deviations when taking into account the look-elsewhere effect. The data exclude the fermiophobic Higgs model in the ranges 110.0–118.0 GeV and 119.5–121.0 GeV at 95 % confidence level.

U2 - 10.1140/epjc/s10052-012-2157-0

DO - 10.1140/epjc/s10052-012-2157-0

M3 - Journal article

SN - 1434-6044

VL - 72

SP - 2157

JO - European Physical Journal C

JF - European Physical Journal C

IS - 9

ER -

Search for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector

Abstract

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