Study of the B+→J/ψΛ¯pB+→J/ψΛ¯p decay in proton-proton collisions at √s = 8 TeV; Journal of High Energy Physics; Vol. 2019, iss. 12
| Parent link: | Journal of High Energy Physics Vol. 2019, iss. 12.— 2019.— [100, 37 p.] |
|---|---|
| Coauteurs: | , |
| Andere auteurs: | , , , , , , , |
| Samenvatting: | Title screen A study of the B+→J/ψΛ¯¯¯¯pB+→J/ψΛ¯p decay using proton-proton collision data collected at s√s = 8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6 fb−1, is presented. The ratio of branching fractions B(B+→J/ψΛ¯¯¯¯p)/B(B+→J/ψK∗(892)+)B(B+→J/ψΛ¯p)/B(B+→J/ψK∗(892)+) is measured to be (1.054 ± 0.057(stat) ± 0.035(syst) ± 0.011(BB))%, where the last uncertainty reflects the uncertainties in the world-average branching fractions of Λ¯¯¯¯Λ¯ and K*(892) + decays to reconstructed final states. The invariant mass distributions of the J/ψΛ¯¯¯¯J/ψΛ¯, J/ψp, and Λ¯¯¯¯pΛ¯p systems produced in the B+→J/ψΛ¯¯¯¯pB+→J/ψΛ¯p decay are investigated and found to be inconsistent with the pure phase space hypothesis. The analysis is extended by using a model-independent angular amplitude analysis, which shows that the observed invariant mass distributions are consistent with the contributions from excited kaons decaying to the Λ¯¯¯¯pΛ¯p system. Режим доступа: по договору с организацией-держателем ресурса |
| Taal: | Engels |
| Gepubliceerd in: |
2019
|
| Onderwerpen: | |
| Online toegang: | https://doi.org/10.1007/JHEP12(2019)100 |
| Formaat: | Elektronisch Hoofdstuk |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662401 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 662401 | ||
| 005 | 20250207163222.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\33556 | ||
| 090 | |a 662401 | ||
| 100 | |a 20200804d2019 k||y0rusy50 ba | ||
| 101 | 0 | |a eng | |
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i |b e | |
| 182 | 0 | |a b | |
| 183 | |a cr |2 RDAcarrier | ||
| 200 | 1 | |a Study of the B+→J/ψΛ¯pB+→J/ψΛ¯p decay in proton-proton collisions at √s = 8 TeV |f A. M. Sirunyan, A. R. Tumasyan, W. Adam [et al.] | |
| 203 | |a Текст |c электронный | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 21 tit.] | ||
| 330 | |a A study of the B+→J/ψΛ¯¯¯¯pB+→J/ψΛ¯p decay using proton-proton collision data collected at s√s = 8 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6 fb−1, is presented. The ratio of branching fractions B(B+→J/ψΛ¯¯¯¯p)/B(B+→J/ψK∗(892)+)B(B+→J/ψΛ¯p)/B(B+→J/ψK∗(892)+) is measured to be (1.054 ± 0.057(stat) ± 0.035(syst) ± 0.011(BB))%, where the last uncertainty reflects the uncertainties in the world-average branching fractions of Λ¯¯¯¯Λ¯ and K*(892) + decays to reconstructed final states. The invariant mass distributions of the J/ψΛ¯¯¯¯J/ψΛ¯, J/ψp, and Λ¯¯¯¯pΛ¯p systems produced in the B+→J/ψΛ¯¯¯¯pB+→J/ψΛ¯p decay are investigated and found to be inconsistent with the pure phase space hypothesis. The analysis is extended by using a model-independent angular amplitude analysis, which shows that the observed invariant mass distributions are consistent with the contributions from excited kaons decaying to the Λ¯¯¯¯pΛ¯p system. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Journal of High Energy Physics | ||
| 463 | |t Vol. 2019, iss. 12 |v [100, 37 p.] |d 2019 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a Hadron-Hadron scattering (experiments) | |
| 610 | 1 | |a B physics | |
| 610 | 1 | |a адрон-адронное рассеяние | |
| 610 | 1 | |a физика | |
| 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 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 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
| 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 |
| 801 | 2 | |a RU |b 63413507 |c 20201012 |g RCR | |
| 856 | 4 | |u https://doi.org/10.1007/JHEP12(2019)100 |z https://doi.org/10.1007/JHEP12(2019)100 | |
| 942 | |c CF | ||