Measurement of the Higgs branching ratio BR(H → γγ) at 3 TeV CLIC
Нема приказа
Аутори
Kačarević, GoranBožović-Jelisavčić, Ivanka
Vukašinović, Nataša
Milutinović-Dumbelović, Gordana
Radulović, Mirko M.
Stevanović, Jasna M.
Agatonović-Jovin, Tatjana
Конференцијски прилог (Објављена верзија)
,
© 2021 CERN for the benefit of the CLICdp Collaboration
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In this paper we address the potential of a 3 TeV center-of-mass energy Compact Linear Collider (CLIC) to measure the Standard Model (SM) Higgs boson decay to two photons. Since photons are massless, they are not coupled to the Higgs boson at tree level, but they are created in a loop exchange of heavy particles either from the Standard Model or beyond. Any deviation of the effective H → γγ branching ratio and consequently of the Higgs to photon coupling may indicate New Physics. The Higgs decay to two photons is thus an interesting probe of the Higgs sector, both at the running and future experiments. A similar study has been performed at 1.4 TeV CLIC, where the statistical uncertainty is determined to be 15% for an integrated luminosity of 1.5 ab−1 with unpolarized beams. This study is performed using a full simulation of the detector for CLIC and by considering all relevant physics and beam-induced processes in a full reconstruction chain. The measurement is simulated on 5000 pseudo...-experiments and the relative statistical uncertainty is extracted from the pull distribution. It is shown that the Higgs production cross-section in W+W− fusion times the branching ratio BR(H → γγ) can be measured with a relative statistical accuracy of 8.2%, assuming an integrated luminosity of 5 ab−1 with unpolarized beams.
Извор:
International Workshop on Future Linear Colliders, LCWS 2021, 2021Напомена:
- 2021 International Workshop on Future Linear Colliders, LCWS 2021 Virtual, Online 15 March 2021 through 18 March 2021
Scopus: 2-s2.0-85117315165
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Институција/група
VinčaTY - CONF AU - Kačarević, Goran AU - Božović-Jelisavčić, Ivanka AU - Vukašinović, Nataša AU - Milutinović-Dumbelović, Gordana AU - Radulović, Mirko M. AU - Stevanović, Jasna M. AU - Agatonović-Jovin, Tatjana PY - 2021 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9995 AB - In this paper we address the potential of a 3 TeV center-of-mass energy Compact Linear Collider (CLIC) to measure the Standard Model (SM) Higgs boson decay to two photons. Since photons are massless, they are not coupled to the Higgs boson at tree level, but they are created in a loop exchange of heavy particles either from the Standard Model or beyond. Any deviation of the effective H → γγ branching ratio and consequently of the Higgs to photon coupling may indicate New Physics. The Higgs decay to two photons is thus an interesting probe of the Higgs sector, both at the running and future experiments. A similar study has been performed at 1.4 TeV CLIC, where the statistical uncertainty is determined to be 15% for an integrated luminosity of 1.5 ab−1 with unpolarized beams. This study is performed using a full simulation of the detector for CLIC and by considering all relevant physics and beam-induced processes in a full reconstruction chain. The measurement is simulated on 5000 pseudo-experiments and the relative statistical uncertainty is extracted from the pull distribution. It is shown that the Higgs production cross-section in W+W− fusion times the branching ratio BR(H → γγ) can be measured with a relative statistical accuracy of 8.2%, assuming an integrated luminosity of 5 ab−1 with unpolarized beams. C3 - International Workshop on Future Linear Colliders, LCWS 2021 T1 - Measurement of the Higgs branching ratio BR(H → γγ) at 3 TeV CLIC UR - https://hdl.handle.net/21.15107/rcub_vinar_9995 ER -
@conference{ author = "Kačarević, Goran and Božović-Jelisavčić, Ivanka and Vukašinović, Nataša and Milutinović-Dumbelović, Gordana and Radulović, Mirko M. and Stevanović, Jasna M. and Agatonović-Jovin, Tatjana", year = "2021", abstract = "In this paper we address the potential of a 3 TeV center-of-mass energy Compact Linear Collider (CLIC) to measure the Standard Model (SM) Higgs boson decay to two photons. Since photons are massless, they are not coupled to the Higgs boson at tree level, but they are created in a loop exchange of heavy particles either from the Standard Model or beyond. Any deviation of the effective H → γγ branching ratio and consequently of the Higgs to photon coupling may indicate New Physics. The Higgs decay to two photons is thus an interesting probe of the Higgs sector, both at the running and future experiments. A similar study has been performed at 1.4 TeV CLIC, where the statistical uncertainty is determined to be 15% for an integrated luminosity of 1.5 ab−1 with unpolarized beams. This study is performed using a full simulation of the detector for CLIC and by considering all relevant physics and beam-induced processes in a full reconstruction chain. The measurement is simulated on 5000 pseudo-experiments and the relative statistical uncertainty is extracted from the pull distribution. It is shown that the Higgs production cross-section in W+W− fusion times the branching ratio BR(H → γγ) can be measured with a relative statistical accuracy of 8.2%, assuming an integrated luminosity of 5 ab−1 with unpolarized beams.", journal = "International Workshop on Future Linear Colliders, LCWS 2021", title = "Measurement of the Higgs branching ratio BR(H → γγ) at 3 TeV CLIC", url = "https://hdl.handle.net/21.15107/rcub_vinar_9995" }
Kačarević, G., Božović-Jelisavčić, I., Vukašinović, N., Milutinović-Dumbelović, G., Radulović, M. M., Stevanović, J. M.,& Agatonović-Jovin, T.. (2021). Measurement of the Higgs branching ratio BR(H → γγ) at 3 TeV CLIC. in International Workshop on Future Linear Colliders, LCWS 2021. https://hdl.handle.net/21.15107/rcub_vinar_9995
Kačarević G, Božović-Jelisavčić I, Vukašinović N, Milutinović-Dumbelović G, Radulović MM, Stevanović JM, Agatonović-Jovin T. Measurement of the Higgs branching ratio BR(H → γγ) at 3 TeV CLIC. in International Workshop on Future Linear Colliders, LCWS 2021. 2021;. https://hdl.handle.net/21.15107/rcub_vinar_9995 .
Kačarević, Goran, Božović-Jelisavčić, Ivanka, Vukašinović, Nataša, Milutinović-Dumbelović, Gordana, Radulović, Mirko M., Stevanović, Jasna M., Agatonović-Jovin, Tatjana, "Measurement of the Higgs branching ratio BR(H → γγ) at 3 TeV CLIC" in International Workshop on Future Linear Colliders, LCWS 2021 (2021), https://hdl.handle.net/21.15107/rcub_vinar_9995 .