Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb(-1) of 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; Shin-ichi Adachi; L. Adamczyk; J. Adelman; M. Adersberger; T. Adye; A. A. Affolder; Peter Henrik Hansen; Graig Wiglesworth; Gorm Aske Gram Krohn Galster; Flavia de Almeida Dias; Mogens Dam; Fabian Alexander Jürgen Thiele; James William Monk; Milena Bajic; Jørgen Beck Hansen; Troels Christian Petersen; Simon Holm Stark; Alejandro Alonso Diaz; Jørn Dines Hansen; Geert-Jan Besjes; Stefania Xella

doi:10.1007/JHEP01(2018)055

Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb(-1) of 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, Shin-ichi Adachi, L. Adamczyk, J. Adelman, M. Adersberger, T. Adye, A. A. Affolder, Peter Henrik HansenGraig Wiglesworth, Gorm Aske Gram Krohn Galster, Flavia de Almeida Dias, Mogens Dam, Fabian Alexander Jürgen Thiele, James William Monk, Milena Bajic, Jørgen Beck Hansen, Troels Christian Petersen, Simon Holm Stark, Alejandro Alonso Diaz, Jørn Dines Hansen, Geert-Jan Besjes, Stefania Xella

Experimental Particle Physics

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Abstract

A search for heavy neutral Higgs bosons and Z′ bosons is performed using a data sample corresponding to an integrated luminosity of 36.1 fb⁻¹ from proton-proton collisions at s=13 TeV recorded by the ATLAS detector at the LHC during 2015 and 2016. The heavy resonance is assumed to decay to τ⁺τ⁻ with at least one tau lepton decaying to final states with hadrons and a neutrino. The search is performed in the mass range of 0.2-2.25 TeV for Higgs bosons and 0.2-4.0 TeV for Z′ bosons. The data are in good agreement with the background predicted by the Standard Model. The results are interpreted in benchmark scenarios. In the context of the hMSSM scenario, the data exclude tan β > 1.0 for m_A = 0.25 TeV and tan β > 42 for m_A = 1.5 TeV at the 95% confidence level. For the Sequential Standard Model, Z_SSM^′ with m_Z′ < 2.42 TeV is excluded at 95% confidence level, while Z_NU^′ with m_{Z ′} < 2.25 TeV is excluded for the non-universal G(221) model that exhibits enhanced couplings to third-generation fermions.

Original language	English
Article number	055
Journal	Journal of High Energy Physics
Volume	2018
Issue number	1
Number of pages	54
ISSN	1126-6708
DOIs	https://doi.org/10.1007/JHEP01(2018)055
Publication status	Published - 1 Jan 2018

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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., Adelman, J., Adersberger, M., Adye, T., Affolder, A. A., ... Xella, S. (2018). Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb(-1) of pp collisions at root s=13 TeV with the ATLAS detector. Journal of High Energy Physics, 2018(1), [055]. https://doi.org/10.1007/JHEP01(2018)055

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, Adelman, J, Adersberger, M, Adye, T, Affolder, AA, Hansen, PH , Wiglesworth, G, Galster, GAGK, de Almeida Dias, F, Dam, M, Thiele, FAJ, Monk, JW, Bajic, M, Hansen, JB , Petersen, TC, Stark, SH, Alonso Diaz, A, Hansen, JD, Besjes, G-J & Xella, S 2018, 'Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb(-1) of pp collisions at root s=13 TeV with the ATLAS detector', Journal of High Energy Physics, vol. 2018, no. 1, 055. https://doi.org/10.1007/JHEP01(2018)055

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title = "Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb(-1) of pp collisions at root s=13 TeV with the ATLAS detector",

abstract = "A search for heavy neutral Higgs bosons and Z′ bosons is performed using a data sample corresponding to an integrated luminosity of 36.1 fb−1 from proton-proton collisions at s=13 TeV recorded by the ATLAS detector at the LHC during 2015 and 2016. The heavy resonance is assumed to decay to τ+τ− with at least one tau lepton decaying to final states with hadrons and a neutrino. The search is performed in the mass range of 0.2-2.25 TeV for Higgs bosons and 0.2-4.0 TeV for Z′ bosons. The data are in good agreement with the background predicted by the Standard Model. The results are interpreted in benchmark scenarios. In the context of the hMSSM scenario, the data exclude tan β > 1.0 for mA = 0.25 TeV and tan β > 42 for mA = 1.5 TeV at the 95% confidence level. For the Sequential Standard Model, ZSSM′ with mZ′ < 2.42 TeV is excluded at 95% confidence level, while ZNU′ with mZ ′ < 2.25 TeV is excluded for the non-universal G(221) model that exhibits enhanced couplings to third-generation fermions.",

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 Shin-ichi Adachi and L. Adamczyk and J. Adelman and M. Adersberger and T. Adye and Affolder, {A. A.} and Hansen, {Peter Henrik} and Graig Wiglesworth and Galster, {Gorm Aske Gram Krohn} and {de Almeida Dias}, Flavia and Mogens Dam and Thiele, {Fabian Alexander J{\"u}rgen} and Monk, {James William} and Milena Bajic and Hansen, {J{\o}rgen Beck} and Petersen, {Troels Christian} and Stark, {Simon Holm} and {Alonso Diaz}, Alejandro and Hansen, {J{\o}rn Dines} and Geert-Jan Besjes and Stefania Xella",

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T1 - Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb(-1) of 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, Shin-ichi

AU - Adamczyk, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adye, T.

AU - Affolder, A. A.

AU - Hansen, Peter Henrik

AU - Wiglesworth, Graig

AU - Galster, Gorm Aske Gram Krohn

AU - de Almeida Dias, Flavia

AU - Dam, Mogens

AU - Thiele, Fabian Alexander Jürgen

AU - Monk, James William

AU - Bajic, Milena

AU - Hansen, Jørgen Beck

AU - Petersen, Troels Christian

AU - Stark, Simon Holm

AU - Alonso Diaz, Alejandro

AU - Hansen, Jørn Dines

AU - Besjes, Geert-Jan

AU - Xella, Stefania

PY - 2018/1/1

Y1 - 2018/1/1

N2 - A search for heavy neutral Higgs bosons and Z′ bosons is performed using a data sample corresponding to an integrated luminosity of 36.1 fb−1 from proton-proton collisions at s=13 TeV recorded by the ATLAS detector at the LHC during 2015 and 2016. The heavy resonance is assumed to decay to τ+τ− with at least one tau lepton decaying to final states with hadrons and a neutrino. The search is performed in the mass range of 0.2-2.25 TeV for Higgs bosons and 0.2-4.0 TeV for Z′ bosons. The data are in good agreement with the background predicted by the Standard Model. The results are interpreted in benchmark scenarios. In the context of the hMSSM scenario, the data exclude tan β > 1.0 for mA = 0.25 TeV and tan β > 42 for mA = 1.5 TeV at the 95% confidence level. For the Sequential Standard Model, ZSSM′ with mZ′ < 2.42 TeV is excluded at 95% confidence level, while ZNU′ with mZ ′ < 2.25 TeV is excluded for the non-universal G(221) model that exhibits enhanced couplings to third-generation fermions.

AB - A search for heavy neutral Higgs bosons and Z′ bosons is performed using a data sample corresponding to an integrated luminosity of 36.1 fb−1 from proton-proton collisions at s=13 TeV recorded by the ATLAS detector at the LHC during 2015 and 2016. The heavy resonance is assumed to decay to τ+τ− with at least one tau lepton decaying to final states with hadrons and a neutrino. The search is performed in the mass range of 0.2-2.25 TeV for Higgs bosons and 0.2-4.0 TeV for Z′ bosons. The data are in good agreement with the background predicted by the Standard Model. The results are interpreted in benchmark scenarios. In the context of the hMSSM scenario, the data exclude tan β > 1.0 for mA = 0.25 TeV and tan β > 42 for mA = 1.5 TeV at the 95% confidence level. For the Sequential Standard Model, ZSSM′ with mZ′ < 2.42 TeV is excluded at 95% confidence level, while ZNU′ with mZ ′ < 2.25 TeV is excluded for the non-universal G(221) model that exhibits enhanced couplings to third-generation fermions.

U2 - 10.1007/JHEP01(2018)055

DO - 10.1007/JHEP01(2018)055

M3 - Journal article

SN - 1126-6708

VL - 2018

JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

IS - 1

M1 - 055

ER -

Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb(-1) of pp collisions at root s=13 TeV with the ATLAS detector

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