Observation of a New Ξ−b Resonance
| Parent link: | Physical Review Letters: Scientific Journal.— , 1958- Vol. 121, iss. 7.— 2018.— [072002 , 12 p.] |
|---|---|
| Corporate Authors: | , |
| Other Authors: | , , , |
| Summary: | Title screen From samples of pp collision data collected by the LHCb experiment at √s=7, 8 and 13 TeV, corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb−1, respectively, a peak in both the Λ0bK− and Ξ0bπ− invariant mass spectra is observed. In the quark model, radially and orbitally excited Ξ−b resonances with quark content bds are expected. Referring to this peak as Ξb(6227)−, the mass and natural width are measured to be mΞb(6227)−=6226.9±2.0±0.3±0.2 MeV/c2 and ΓΞb(6227)−=18.1±5.4±1.8 MeV/c2, where the first uncertainty is statistical, the second is systematic, and the third, on mΞb(6227)−, is due to the knowledge of the Λ0b baryon mass. Relative production rates of the Ξb(6227)−→Λ0bK− and Ξb(6227)−→Ξ0bπ− decays are also reported. |
| Published: |
2018
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| Subjects: | |
| Online Access: | http://earchive.tpu.ru/handle/11683/57796 https://doi.org/10.1103/PhysRevLett.121.072002 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=658780 |
MARC
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| 200 | 1 | |a Observation of a New Ξ−b Resonance |f R. Aaij [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 48 tit.] | ||
| 330 | |a From samples of pp collision data collected by the LHCb experiment at √s=7, 8 and 13 TeV, corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb−1, respectively, a peak in both the Λ0bK− and Ξ0bπ− invariant mass spectra is observed. In the quark model, radially and orbitally excited Ξ−b resonances with quark content bds are expected. Referring to this peak as Ξb(6227)−, the mass and natural width are measured to be mΞb(6227)−=6226.9±2.0±0.3±0.2 MeV/c2 and ΓΞb(6227)−=18.1±5.4±1.8 MeV/c2, where the first uncertainty is statistical, the second is systematic, and the third, on mΞb(6227)−, is due to the knowledge of the Λ0b baryon mass. Relative production rates of the Ξb(6227)−→Λ0bK− and Ξb(6227)−→Ξ0bπ− decays are also reported. | ||
| 461 | 1 | |t Physical Review Letters |o Scientific Journal |d 1958- | |
| 463 | 1 | |t Vol. 121, iss. 7 |v [072002 , 12 p.] |d 2018 | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 701 | 1 | |a Aaij |b R. |g Roel | |
| 701 | 1 | |a Panshin |b G. L. |c specialist in the field of informatics and computer technology |c Senior Lecturer at Tomsk Polytechnic University |f 1987- |g Gennady Leonidovich |3 (RuTPU)RU\TPU\pers\40978 |9 21367 | |
| 701 | 1 | |a Strokov |b S. A. |c physicist |c engineer of Tomsk Polytechnic University |f 1977- |g Sergey Aleksandrovich |3 (RuTPU)RU\TPU\pers\37442 | |
| 701 | 1 | |a Vagner |b A. R. |c physicist |c Vice-rector for educational activities of Tomsk Polytechnic University, candidate of physical and mathematical sciences |f 1983- |g Aleksandr Rudolfovich |3 (RuTPU)RU\TPU\pers\31560 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа информационных технологий и робототехники |b Отделение автоматизации и робототехники (ОАР) |3 (RuTPU)RU\TPU\col\23553 |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
| 801 | 2 | |a RU |b 63413507 |c 20211117 |g RCR | |
| 856 | 4 | |u http://earchive.tpu.ru/handle/11683/57796 | |
| 856 | 4 | |u https://doi.org/10.1103/PhysRevLett.121.072002 | |
| 942 | |c CF | ||