Observation of a New Excited Beauty Strange Baryon Decaying to Ξ−bπ+π−; Physical Review Letters; Vol. 126, iss. 25

Observation of a New Excited Beauty Strange Baryon Decaying to Ξ−bπ+π−; Physical Review Letters; Vol. 126, iss. 25

Bibliografski detalji
Parent link:	Physical Review Letters Vol. 126, iss. 25.— 2021.— [252003, 19 p.]
Autor kompanije:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Daljnji autori:	Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Babaev A. A. Anton Anatoljevich, Okhotnikov V. V. Vitaly Vladimirovich, Sukhikh L. G. Leonid Grigorievich
Sažetak:	Title screen The Ξ−bπ+π− invariant mass spectrum is investigated with an event sample of proton-proton collisions at √s=13 TeV, collected by the CMS experiment at the LHC in 2016-2018 and corresponding to an integrated luminosity of 140 fb−1. The ground state Ξ−b is reconstructed via its decays to J/ψΞ− and J/ψΛK−. A narrow resonance, labeled Ξb(6100)−, is observed at a Ξ−bπ+π− invariant mass of 6100.3±0.2(stat)±0.1(syst)±0.6(Ξ−b) MeV, where the last uncertainty reflects the precision of the Ξ−b baryon mass. The upper limit on the Ξb(6100)− natural width is determined to be 1.9 MeV at 95% confidence level. The low Ξb(6100)− signal yield observed in data does not allow a measurement of the quantum numbers of the new state. However, following analogies with the established excited Ξc baryon states, the new Ξb(6100)− resonance and its decay sequence are consistent with the orbitally excited Ξ−b baryon, with spin and parity quantum numbers JP=3/2−.
Jezik:	engleski
Izdano:	2021
Teme:	электронный ресурс труды учёных ТПУ
Online pristup:	http://earchive.tpu.ru/handle/11683/74929 https://doi.org/10.1103/PhysRevLett.126.252003
Format:	Elektronički Poglavlje knjige
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668551

Slični predmeti

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Observation of a New Excited D+s Meson in B0→D−D+K+π− Decays; Physical Review Letters; Vol. 126, iss. 12
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Observation of Several Sources of CP Violation in B+→π+π+π− Decays; Physical Review Letters; Vol. 124, iss. 3
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Observation of New Ξ0c Baryons Decaying to Λ+cK−; Physical Review Letters; Vol. 124, iss. 22
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Observation of New Resonances in the Λ0bπ+π− System; Physical Review Letters; Vol. 123, iss. 15
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Measurement of CP Violation in the Decay B+→K+π0; Physical Review Letters; Vol. 126, iss. 9
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Observation of the Λb0→Λc+K+K−π− decay; Physics Letters B; Vol. 815
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Study of excited Λb0 states decaying to Λb0π+π− in proton-proton collisions at √s=13TeV; Physics Letters B; Vol. 803
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A search for Ξ++cc→ D+pK−π+ decays; Journal of High Energy Physics; Vol. 2019, iss. 10
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Model-Independent Observation of Exotic Contributions to B0→J/ψK+π− Decays; Physical Review Letters; Vol. 122, iss. 15
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First branching fraction measurement of the suppressed decay Ξ0c→π−Λ+c; Physical Review D; Vol. 102, iss. 7
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First Observation of a Baryonic B0s Decay; Physical Review Letters; Vol. 119, iss. 4
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Observation of the decay Λ b 0 → ψ(2S)pπ−; Journal of High Energy Physics; № 8
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Search for CP violation using triple product asymmetries in Λ b 0 → pK−π+π−, Λ b 0 → pK−K+K− and Ξ b 0 → pK−K−π+ decays; Journal of High Energy Physics; № 8
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Study of the B0 → ρ(770)°K*(892)0 decay with an amplitude analysis of B0 → (π+π−)(K+π−) decays; Journal of High Energy Physics; Vol. 2019, iss. 5
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Observation of a New Ξ−b Resonance; Physical Review Letters; Vol. 121, iss. 7
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Amplitude Analysis of B±→π±K+K− Decays; Physical Review Letters; Vol. 123, iss. 23
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Updated measurement of decay-time-dependent CP asymmetries in D0→K+K− and D0→π+π− decays; Physical Review D; Vol. 101, iss. 1
Izdano: (2020)

Exotic meson π1(1600) with JPC=1−+ and its decay into ρ(770)π; Physical Review D; Vol. 105, iss. 1
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Search for CP violation in Ξ+ c → pK−π+ decays using model-independent techniques; The European Physical Journal C; Vol. 80, № 10
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Measurement of the branching fractions of the decays D+ → K−K+K+, D+ → π−π+K+ and D+s → π−K+K+; Journal of High Energy Physics; Vol. 2019, iss. 3
Izdano: (2019)

First observation of the decay B0→D0¯D0K+π−; Physical Review D; Vol. 102, iss. 5
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Measurement of Angular and CP Asymmetries in D0→π+π−μ+μ− and D0→K+K−μ+μ− Decays; Physical Review Letters; Vol. 121, iss. 9
Izdano: (2018)

Measurement of the Lifetime of the Doubly Charmed Baryon Ξ++cc; Physical Review Letters; Vol. 121, iss. 5
Izdano: (2018)

Search for time-dependent CP violation in D0→K+K− and D0→π+π− decays; Physical Review D; Vol. 104, iss. 7
Izdano: (2021)

Search for Baryon-Number Violating Ξ0b Oscillations; Physical Review Letters; Vol. 119, iss. 18
Izdano: (2017)

Decay chain information on the newly discovered double charm baryon state Ξ++cc; Physical Review D; Vol. 96, iss. 5
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