Update on splitting of lifetimes of and hyperons within the heavy quark expansion and decays
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:
- 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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Works referenced in this record:
Measurement of the mass and production rate of baryons
journal, March 2019
- Aaij, R.; Abellán Beteta, C.; Adeva, B.
- Physical Review D, Vol. 99, Issue 5
Lifetimes and heavy quark expansion
journal, April 2015
- Lenz, Alexander
- International Journal of Modern Physics A, Vol. 30, Issue 10
Heavy quarks
journal, May 1983
- Khoze, V. A.; Shifman, Mikhail A.
- Soviet Physics Uspekhi, Vol. 26, Issue 5
Pauli interference effect in D+ lifetime
journal, December 1984
- Bilić, Neven; Guberina, Branko; Trampetić, Josip
- Nuclear Physics B, Vol. 248, Issue 2
Nonperturbative corrections to inclusive beauty and charm decays. QCD versus phenomenological models
journal, October 1992
- Bigi, I. I.; Uraltsev, N. G.; Vainshtein, A. I.
- Physics Letters B, Vol. 293, Issue 3-4
Measurements of the Bs0 and Λb0 lifetimes
journal, April 1998
- Ackerstaff, K.; Alexander, G.; Allison, J.
- Physics Letters B, Vol. 426, Issue 1-2
Heavy-flavor-conserving nonleptonic weak decays of heavy baryons
journal, December 1992
- Cheng, Hai-Yang; Cheung, Chi-Yee; Lin, Guey-Lin
- Physical Review D, Vol. 46, Issue 11
Evidence for Unequal Lifetimes of the and
journal, August 1980
- Bacino, W.; Ferguson, T.; Nodulman, L.
- Physical Review Letters, Vol. 45, Issue 5
Evidence for the Strangeness-Changing Weak Decay
journal, December 2015
- Aaij, R.; Abellán Beteta, C.; Adeva, B.
- Physical Review Letters, Vol. 115, Issue 24
Measurement of the b baryon lifetime and branching fractions in Z decays
journal, April 1998
- Barate et al., R.
- The European Physical Journal C, Vol. 2, Issue 2
From Ξ → Λπ to Ξ → Λπ
journal, June 2016
- Gronau, Michael; Rosner, Jonathan L.
- Physics Letters B, Vol. 757
Reducing model dependence of spectator effects in inclusive decays of heavy baryons
journal, March 2000
- Voloshin, M. B.
- Physical Review D, Vol. 61, Issue 7
Precision Measurement of the Baryon Lifetime
journal, September 2013
- Aaij, R.; Adeva, B.; Adinolfi, M.
- Physical Review Letters, Vol. 111, Issue 10
Precision measurement of the , , and baryon lifetimes
journal, August 2019
- Aaij, R.; Abellán Beteta, C.; Adeva, B.
- Physical Review D, Vol. 100, Issue 3
Review of Particle Physics
journal, August 2018
- Tanabashi, M.; Hagiwara, K.; Hikasa, K.
- Physical Review D, Vol. 98, Issue 3
Beauty-Conserving Strangeness-Changing Two-Body Hadronic Decays of Beauty Baryons
journal, April 1999
- Sinha, Sonali; Khanna, M. P.
- Modern Physics Letters A, Vol. 14, Issue 10n11
A measurement of the b baryon lifetime
journal, December 1992
- Buskulic, D.; Decamp, D.; Goy, C.
- Physics Letters B, Vol. 297, Issue 3-4
-wave nonleptonic hyperon decays and
journal, February 2016
- Gronau, Michael; Rosner, Jonathan L.
- Physical Review D, Vol. 93, Issue 3
Light-quark decays in heavy hadrons
journal, November 2015
- Faller, Sven; Mannel, Thomas
- Physics Letters B, Vol. 750
Relations between inclusive decay rates of heavy baryons
journal, October 1999
- Voloshin, M. B.
- Physics Reports, Vol. 320, Issue 1-6
Decays and diquark correlations in hyperons
journal, August 2014
- Li, Xin; Voloshin, M. B.
- Physical Review D, Vol. 90, Issue 3
Heavy-flavor-conserving hadronic weak decays of heavy baryons
journal, March 2016
- Cheng, Hai-Yang; Cheung, Chi-Yee; Lin, Guey-Lin
- Journal of High Energy Physics, Vol. 2016, Issue 3
Measurements of the b baryon lifetime
journal, September 1995
- Buskulic, D.; Casper, D.; De Bonis, I.
- Physics Letters B, Vol. 357, Issue 4