Theoretical description of the decays Λb → ΛðÞð1 2 ; 3 2 Þ + J=ψ; Physical Review D; Vol. 96, iss. 1
| Parent link: | Physical Review D: particles, fields, gravitation, and cosmology.— , 1970- Vol. 96, iss. 1.— 2017.— [013003, 11 p.] |
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| Korporativní autor: | |
| Další autoři: | , , , , , |
| Shrnutí: | Title screen We calculate the invariant and helicity amplitudes for the transitions Λb → ΛðÞðJPÞ þ J=ψ, where the ΛðÞðJPÞ are ΛðsudÞ-type ground and excited states with JP quantum numbers JP ¼ 1 2 , 3 2 . The calculations are performed in the framework of a covariant confined quark model previously developed by us. We find that the values of the helicity amplitudes for the Λð1520; 3 2 −Þ and the Λð1890; 3 2 þÞ are suppressed compared with those for the ground state Λð1116; 1 2 þÞ and the excited state Λð1405; 1 2 −Þ. This analysis is important for the identification of the hidden charm pentaquark states Pþ c ð4380Þ and Pþ c ð4450Þ which were discovered in the decay chain Λ0 b → Pþ c ð→ pJ=ψÞ þ K− because the cascade decay chain Λb → Λð3 2 Þð→ pK−Þ þ J=ψ involves the same final state. Режим доступа: по договору с организацией-держателем ресурса |
| Jazyk: | angličtina |
| Vydáno: |
2017
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| Témata: | |
| On-line přístup: | https://doi.org/10.1103/PhysRevD.96.013003 |
| Médium: | MixedMaterials Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666961 |
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| 200 | 1 | |a Theoretical description of the decays Λb → ΛðÞð1 2 ; 3 2 Þ + J=ψ |f T. Gutsche, M. A. Ivanov, J. G. Korner [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 40 tit.] | ||
| 330 | |a We calculate the invariant and helicity amplitudes for the transitions Λb → ΛðÞðJPÞ þ J=ψ, where the ΛðÞðJPÞ are ΛðsudÞ-type ground and excited states with JP quantum numbers JP ¼ 1 2 , 3 2 . The calculations are performed in the framework of a covariant confined quark model previously developed by us. We find that the values of the helicity amplitudes for the Λð1520; 3 2 −Þ and the Λð1890; 3 2 þÞ are suppressed compared with those for the ground state Λð1116; 1 2 þÞ and the excited state Λð1405; 1 2 −Þ. This analysis is important for the identification of the hidden charm pentaquark states Pþ c ð4380Þ and Pþ c ð4450Þ which were discovered in the decay chain Λ0 b → Pþ c ð→ pJ=ψÞ þ K− because the cascade decay chain Λb → Λð3 2 Þð→ pK−Þ þ J=ψ involves the same final state. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Physical Review D |o particles, fields, gravitation, and cosmology |d 1970- | ||
| 463 | |t Vol. 96, iss. 1 |v [013003, 11 p.] |d 2017 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a спиральность | |
| 610 | 1 | |a переходы | |
| 610 | 1 | |a кварки | |
| 610 | 1 | |a возбужденные состояния | |
| 701 | 1 | |a Gutsche |b T. |g Thomas | |
| 701 | 1 | |a Ivanov |b M. A. |g Mikhail Alekseevich | |
| 701 | 1 | |a Korner |b J. G. |g Juergen | |
| 701 | 1 | |a Lyubovitskiy (Lyubovitskij) |b V. E. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences, Professor of the University of Tubingen (Germany) |f 1963- |g Valery Efimovich |3 (RuTPU)RU\TPU\pers\33385 |9 17080 | |
| 701 | 1 | |a Lyubushkin |b V. V. |g Vladimir | |
| 701 | 1 | |a Santorelli |b P. |g Pietro | |
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