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Title: Update on splitting of lifetimes of c and b hyperons within the heavy quark expansion and decays Ξ Q Λ Q π

Abstract

It is argued that the results of recent precision measurements by LHCb of the lifetimes of charmed and bottom hyperons are very well consistent with the description within heavy quark expansion and allow to accurately determine matrix elements of light-flavor nonsinglet four-quark operators over the hyperons and to accurately reproduce the difference of lifemes of $$Λ_b$$ and $$Ξ^–_b$$. When combined with the recent LHCb results on the decay $$Ξ^–_b → Λ_bπ^–$$ this leads to a prediction of a lower bound on the rate of the decays $$Ξ_c → Λ_cπ$$.

Authors:
ORCiD logo
Publication Date:
Research Org.:
Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1580156
Alternate Identifier(s):
OSTI ID: 1802273
Grant/Contract Number:  
SC0011842
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 11; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Astronomy & Astrophysics; Physics

Citation Formats

Voloshin, M. B. Update on splitting of lifetimes of c and b hyperons within the heavy quark expansion and decays Ξ Q → Λ Q π. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.114030.
Voloshin, M. B. Update on splitting of lifetimes of c and b hyperons within the heavy quark expansion and decays Ξ Q → Λ Q π. United States. https://doi.org/10.1103/PhysRevD.100.114030
Voloshin, M. B. Fri . "Update on splitting of lifetimes of c and b hyperons within the heavy quark expansion and decays Ξ Q → Λ Q π". United States. https://doi.org/10.1103/PhysRevD.100.114030.
@article{osti_1580156,
title = {Update on splitting of lifetimes of c and b hyperons within the heavy quark expansion and decays Ξ Q → Λ Q π},
author = {Voloshin, M. B.},
abstractNote = {It is argued that the results of recent precision measurements by LHCb of the lifetimes of charmed and bottom hyperons are very well consistent with the description within heavy quark expansion and allow to accurately determine matrix elements of light-flavor nonsinglet four-quark operators over the hyperons and to accurately reproduce the difference of lifemes of $Λ_b$ and $Ξ^–_b$. When combined with the recent LHCb results on the decay $Ξ^–_b → Λ_bπ^–$ this leads to a prediction of a lower bound on the rate of the decays $Ξ_c → Λ_cπ$.},
doi = {10.1103/PhysRevD.100.114030},
journal = {Physical Review D},
number = 11,
volume = 100,
place = {United States},
year = {2019},
month = {12}
}

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