Search for dark photons in decays of Higgs bosons produced in association with Z bosons in proton-proton collisions at √s = 13 TeV; Journal of High Energy Physics; Vol. 2019, iss. 10
| Parent link: | Journal of High Energy Physics Vol. 2019, iss. 10.— 2019.— [139, 36 p.] |
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| Egile korporatiboa: | , |
| Beste egile batzuk: | , , , , , , , , |
| Gaia: | Title screen A search is presented for a Higgs boson that is produced in association with a Z boson and that decays to an undetected particle together with an isolated photon. The search is performed by the CMS Collaboration at the Large Hadron Collider using a data set corresponding to an integrated luminosity of 137 fb?1 recorded at a center-of-mass energy of 13 TeV. No significant excess of events above the expectation from the standard model background is found. The results are interpreted in the context of a theoretical model in which the undetected particle is a massless dark photon. An upper limit is set on the product of the cross section for associated Higgs and Z boson production and the branching fraction for such a Higgs boson decay, as a function of the Higgs boson mass. For a mass of 125 GeV, assuming the standard model production cross section, this corresponds to an observed (expected) upper limit on this branching fraction of 4.6 (3.6)% at 95% confidence level. These are the first limits on Higgs boson decays to final states that include an undetected massless dark photon. Режим доступа: по договору с организацией-держателем ресурса |
| Hizkuntza: | ingelesa |
| Argitaratua: |
2019
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| Gaiak: | |
| Sarrera elektronikoa: | https://doi.org/10.1007/JHEP10(2019)139 |
| Formatua: | Baliabide elektronikoa Liburu kapitulua |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662443 |
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| 200 | 1 | |a Search for dark photons in decays of Higgs bosons produced in association with Z bosons in proton-proton collisions at √s = 13 TeV |f A. M. Sirunyan, A. R. Tumasyan, W. Adam [et al.] | |
| 203 | |a Текст |c электронный | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 64 tit.] | ||
| 330 | |a A search is presented for a Higgs boson that is produced in association with a Z boson and that decays to an undetected particle together with an isolated photon. The search is performed by the CMS Collaboration at the Large Hadron Collider using a data set corresponding to an integrated luminosity of 137 fb?1 recorded at a center-of-mass energy of 13 TeV. No significant excess of events above the expectation from the standard model background is found. The results are interpreted in the context of a theoretical model in which the undetected particle is a massless dark photon. An upper limit is set on the product of the cross section for associated Higgs and Z boson production and the branching fraction for such a Higgs boson decay, as a function of the Higgs boson mass. For a mass of 125 GeV, assuming the standard model production cross section, this corresponds to an observed (expected) upper limit on this branching fraction of 4.6 (3.6)% at 95% confidence level. These are the first limits on Higgs boson decays to final states that include an undetected massless dark photon. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Journal of High Energy Physics | ||
| 463 | |t Vol. 2019, iss. 10 |v [139, 36 p.] |d 2019 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a Hadron-Hadron scattering (experiments) | |
| 610 | 1 | |a Beyond Standard Model | |
| 610 | 1 | |a photon production | |
| 610 | 1 | |a адрон-адронное рассеяние | |
| 610 | 1 | |a фотоны | |
| 701 | 1 | |a Sirunyan |b A. M. | |
| 701 | 1 | |a Tumasyan |b A. R. | |
| 701 | 1 | |a Adam |b W. |g Wolfgang | |
| 701 | 1 | |a Ambrogi |b F. |g Federico | |
| 701 | 1 | |a Asilar |b E. |g Ece | |
| 701 | 1 | |a Bergauer |b T. |g Thomas | |
| 701 | 1 | |a Babaev |b A. A. |c physicist |c engineer-issledovatelskogo Polytechnic University, candidate of physical and mathematical Sciences |f 1981- |g Anton Anatoljevich |3 (RuTPU)RU\TPU\pers\35154 |9 18420 | |
| 701 | 1 | |a Yuzhakov |b A. D. |g Aleksandr Dmitrievich | |
| 701 | 1 | |a Okhotnikov |b V. V. |c physicist |c engineer of Tomsk Polytechnic University |f 1992- |g Vitaly Vladimirovich |3 (RuTPU)RU\TPU\pers\36453 |9 19502 | |
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| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа новых производственных технологий |b Научно-производственная лаборатория "Импульсно-пучковых, электроразрядных и плазменных технологий" |3 (RuTPU)RU\TPU\col\23502 |
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