Isospin Amplitudes in Λ0b→J/ψΛ(Σ0) and Ξ0b→J/ψΞ0(Λ) Decays; Physical Review Letters; Vol. 124, iss. 11
| Parent link: | Physical Review Letters Vol. 124, iss. 11.— 2020.— [111802, 11 p.] |
|---|---|
| Corporate Authors: | , |
| Andre forfattere: | , , , , , , |
| Summary: | Title screen Ratios of isospin amplitudes in hadron decays are a useful probe of the interplay between weak and strong interactions and allow searches for physics beyond the standard model. We present the first results on isospin amplitudes in b-baryon decays, using data corresponding to an integrated luminosity of 8.5 fb−1, collected with the LHCb detector in pp collisions at center of mass energies of 7, 8, and 13 TeV. The isospin amplitude ratio |A1(Λ0b→J/ψΣ0)/A0(Λ0b→J/ψΛ)|, where the subscript on A indicates the final-state isospin, is measured to be less than 1/21.8 at 95% confidence level. The Cabibbo suppressed Ξ0b→J/ψΛ decay is observed for the first time, allowing for the measurement |A0(Ξ0b→J/ψΛ)/A1/2(Ξ0b→J/ψΞ0)|=0.37±0.06±0.02, where the uncertainties are statistical and systematic, respectively. |
| Sprog: | engelsk |
| Udgivet: |
2020
|
| Fag: | |
| Online adgang: | https://doi.org/10.1103/PhysRevLett.124.111802 |
| Format: | Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662344 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 662344 | ||
| 005 | 20260807071624.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\33481 | ||
| 035 | |a RU\TPU\network\27292 | ||
| 090 | |a 662344 | ||
| 100 | |a 20200717d2020 k||y0engy50 ba | ||
| 101 | 0 | |a eng | |
| 102 | |a US | ||
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i | |
| 182 | 0 | |a b | |
| 200 | 1 | |a Isospin Amplitudes in Λ0b→J/ψΛ(Σ0) and Ξ0b→J/ψΞ0(Λ) Decays |f R. Aaij, B. Adeva, M. Adinolfi [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 38 tit.] | ||
| 330 | |a Ratios of isospin amplitudes in hadron decays are a useful probe of the interplay between weak and strong interactions and allow searches for physics beyond the standard model. We present the first results on isospin amplitudes in b-baryon decays, using data corresponding to an integrated luminosity of 8.5 fb−1, collected with the LHCb detector in pp collisions at center of mass energies of 7, 8, and 13 TeV. The isospin amplitude ratio |A1(Λ0b→J/ψΣ0)/A0(Λ0b→J/ψΛ)|, where the subscript on A indicates the final-state isospin, is measured to be less than 1/21.8 at 95% confidence level. The Cabibbo suppressed Ξ0b→J/ψΛ decay is observed for the first time, allowing for the measurement |A0(Ξ0b→J/ψΛ)/A1/2(Ξ0b→J/ψΞ0)|=0.37±0.06±0.02, where the uncertainties are statistical and systematic, respectively. | ||
| 461 | |t Physical Review Letters | ||
| 463 | |t Vol. 124, iss. 11 |v [111802, 11 p.] |d 2020 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 701 | 1 | |a Aaij |b R. |g Roel | |
| 701 | 1 | |a Adeva |b B. |g Bernardo | |
| 701 | 1 | |a Adinolfi |b M. |g Marco | |
| 701 | 1 | |a Aidala |b C. |g Christine | |
| 701 | 1 | |a Kharisova |b A. E. |c nuclear technology specialist |c engineer of Tomsk Polytechnic University |f 1994- |g Anastasiya Evgenjevna |3 (RuTPU)RU\TPU\pers\46775 | |
| 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 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа информационных технологий и робототехники |c 2017- |x TPU |7 ca |8 rus |9 28330 |
| 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 https://doi.org/10.1103/PhysRevLett.124.111802 | |
| 942 | |c CF | ||