Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the gamma gamma jj final state in pp collisions at root s=13 TeV with the ATLAS detector

M. Aaboud; G. Aad; B. Abbott; O. Abdinov; B Abeloos; S.H. Abidi; Ossama Sherif Alexander Abouzeid; NL Abraham; H. Abramowicz; H. Abreu; R. Abreu; Y. Abulaiti; B.S. Acharya; Sosuke Adachi; L. Adamczyk; D Adelmann; M. Adersberger; T. Adye; A. A. Affolder; Y.  Afik; Mogens Dam; Milena Bajic; Alejandro Alonso Diaz; Jørgen Beck Hansen; Geert-Jan Besjes; Peter Henrik Hansen; Jørn Dines Hansen; Gorm Aske Gram Krohn Galster; Graig Wiglesworth; Flavia de Almeida Dias; Fabian Alexander Jürgen Thiele; James William Monk; Simon Holm Stark; Troels Christian Petersen; Stefania Xella

doi:10.1016/j.physletb.2018.06.011

Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the gamma gamma jj final state in pp collisions at root s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, B Abeloos, S.H. Abidi, Ossama Sherif Alexander Abouzeid, NL Abraham, H. Abramowicz, H. Abreu, R. Abreu, Y. Abulaiti, B.S. Acharya, Sosuke Adachi, L. Adamczyk, D Adelmann, M. Adersberger, T. Adye, A. A. Affolder, Y. AfikMogens Dam, Milena Bajic, Alejandro Alonso Diaz, Jørgen Beck Hansen, Geert-Jan Besjes, Peter Henrik Hansen, Jørn Dines Hansen, Gorm Aske Gram Krohn Galster, Graig Wiglesworth, Flavia de Almeida Dias, Fabian Alexander Jürgen Thiele, James William Monk, Simon Holm Stark, Troels Christian Petersen, Stefania Xella

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Abstract

This Letter presents a search for exotic decays of the Higgs boson to a pair of new (pseudo)scalar particles, H→aa, where the a particle has a mass in the range 20–60 GeV, and where one of the a bosons decays into a pair of photons and the other to a pair of gluons. The search is performed in event samples enhanced in vector-boson fusion Higgs boson production by requiring two jets with large invariant mass in addition to the Higgs boson candidate decay products. The analysis is based on the full dataset of pp collisions at s=13TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 36.7 fb⁻¹. The data are in agreement with the Standard Model predictions and an upper limit at the 95% confidence level is placed on the production cross section times the branching ratio for the decay H→aa→γγgg. This limit ranges from 3.1 pb to 9.0 pb depending on the mass of the a boson.

Originalsprog	Engelsk
Tidsskrift	Physics Letters B
Vol/bind	782
Sider (fra-til)	750-767
Antal sider	17
ISSN	0370-2693
DOI	https://doi.org/10.1016/j.physletb.2018.06.011
Status	Udgivet - 10 jul. 2018

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10.1016/j.physletb.2018.06.011Licens: CC BY

1-s2.0-S0370269318304593-mainForlagets udgivne version, 814 KBLicens: CC BY

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Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S. H., Abouzeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelmann, D., Adersberger, M., Adye, T., Affolder, A. A., ... Xella, S. (2018). Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the gamma gamma jj final state in pp collisions at root s=13 TeV with the ATLAS detector. Physics Letters B, 782, 750-767. https://doi.org/10.1016/j.physletb.2018.06.011

Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abidi, SH, Abouzeid, OSA, Abraham, NL, Abramowicz, H, Abreu, H, Abreu, R, Abulaiti, Y, Acharya, BS, Adachi, S, Adamczyk, L, Adelmann, D, Adersberger, M, Adye, T, Affolder, AA, Afik, Y, Dam, M, Bajic, M, Alonso Diaz, A, Hansen, JB, Besjes, G-J, Hansen, PH , Hansen, JD, Galster, GAGK, Wiglesworth, G, de Almeida Dias, F, Thiele, FAJ, Monk, JW, Stark, SH, Petersen, TC & Xella, S 2018, 'Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the gamma gamma jj final state in pp collisions at root s=13 TeV with the ATLAS detector', Physics Letters B, bind 782, s. 750-767. https://doi.org/10.1016/j.physletb.2018.06.011

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title = "Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the gamma gamma jj final state in pp collisions at root s=13 TeV with the ATLAS detector",

abstract = "This Letter presents a search for exotic decays of the Higgs boson to a pair of new (pseudo)scalar particles, H→aa, where the a particle has a mass in the range 20–60 GeV, and where one of the a bosons decays into a pair of photons and the other to a pair of gluons. The search is performed in event samples enhanced in vector-boson fusion Higgs boson production by requiring two jets with large invariant mass in addition to the Higgs boson candidate decay products. The analysis is based on the full dataset of pp collisions at s=13TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 36.7 fb−1. The data are in agreement with the Standard Model predictions and an upper limit at the 95% confidence level is placed on the production cross section times the branching ratio for the decay H→aa→γγgg. This limit ranges from 3.1 pb to 9.0 pb depending on the mass of the a boson.",

author = "M. Aaboud and G. Aad and B. Abbott and O. Abdinov and B Abeloos and S.H. Abidi and Abouzeid, {Ossama Sherif Alexander} and NL Abraham and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and B.S. Acharya and Sosuke Adachi and L. Adamczyk and D Adelmann and M. Adersberger and T. Adye and Affolder, {A. A.} and Y. Afik and Mogens Dam and Milena Bajic and {Alonso Diaz}, Alejandro and Hansen, {J{\o}rgen Beck} and Geert-Jan Besjes and Hansen, {Peter Henrik} and Hansen, {J{\o}rn Dines} and Galster, {Gorm Aske Gram Krohn} and Graig Wiglesworth and {de Almeida Dias}, Flavia and Thiele, {Fabian Alexander J{\"u}rgen} and Monk, {James William} and Stark, {Simon Holm} and Petersen, {Troels Christian} and Stefania Xella",

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doi = "10.1016/j.physletb.2018.06.011",

language = "English",

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T1 - Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the gamma gamma jj final state in pp collisions at root s=13 TeV with the ATLAS detector

AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abdinov, O.

AU - Abeloos, B

AU - Abidi, S.H.

AU - Abouzeid, Ossama Sherif Alexander

AU - Abraham, NL

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Abulaiti, Y.

AU - Acharya, B.S.

AU - Adachi, Sosuke

AU - Adamczyk, L.

AU - Adelmann, D

AU - Adersberger, M.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Dam, Mogens

AU - Bajic, Milena

AU - Alonso Diaz, Alejandro

AU - Hansen, Jørgen Beck

AU - Besjes, Geert-Jan

AU - Hansen, Peter Henrik

AU - Hansen, Jørn Dines

AU - Galster, Gorm Aske Gram Krohn

AU - Wiglesworth, Graig

AU - de Almeida Dias, Flavia

AU - Thiele, Fabian Alexander Jürgen

AU - Monk, James William

AU - Stark, Simon Holm

AU - Petersen, Troels Christian

AU - Xella, Stefania

PY - 2018/7/10

Y1 - 2018/7/10

N2 - This Letter presents a search for exotic decays of the Higgs boson to a pair of new (pseudo)scalar particles, H→aa, where the a particle has a mass in the range 20–60 GeV, and where one of the a bosons decays into a pair of photons and the other to a pair of gluons. The search is performed in event samples enhanced in vector-boson fusion Higgs boson production by requiring two jets with large invariant mass in addition to the Higgs boson candidate decay products. The analysis is based on the full dataset of pp collisions at s=13TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 36.7 fb−1. The data are in agreement with the Standard Model predictions and an upper limit at the 95% confidence level is placed on the production cross section times the branching ratio for the decay H→aa→γγgg. This limit ranges from 3.1 pb to 9.0 pb depending on the mass of the a boson.

AB - This Letter presents a search for exotic decays of the Higgs boson to a pair of new (pseudo)scalar particles, H→aa, where the a particle has a mass in the range 20–60 GeV, and where one of the a bosons decays into a pair of photons and the other to a pair of gluons. The search is performed in event samples enhanced in vector-boson fusion Higgs boson production by requiring two jets with large invariant mass in addition to the Higgs boson candidate decay products. The analysis is based on the full dataset of pp collisions at s=13TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 36.7 fb−1. The data are in agreement with the Standard Model predictions and an upper limit at the 95% confidence level is placed on the production cross section times the branching ratio for the decay H→aa→γγgg. This limit ranges from 3.1 pb to 9.0 pb depending on the mass of the a boson.

U2 - 10.1016/j.physletb.2018.06.011

DO - 10.1016/j.physletb.2018.06.011

M3 - Journal article

SN - 0370-2693

VL - 782

SP - 750

EP - 767

JO - Physics Letters B

JF - Physics Letters B

ER -

Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the gamma gamma jj final state in pp collisions at root s=13 TeV with the ATLAS detector

Abstract

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