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Title: Comparison of 1/{ital m}{sub {ital Q}}{sup 2} corrections in mesons and baryons

Abstract

We extend our relativistic quark model to the study of the decay {Lambda}{sub {ital b}}{r_arrow}{Lambda}{sub {ital c}l}{bar {nu}} and verify that the model satisfies the heavy-quark symmetry constraints at order 1/{ital m}{sub {ital Q}}{sup 2}. We isolate a strong dependence on a parameter which measures the relative distortion in the light-quark wave functions of the {Lambda}{sub {ital b}} and {Lambda}{sub {ital c}}. This parameter and the 1/{ital m}{sub {ital Q}}{sup 2} corrections are naturally small. The dependence on a corresponding parameter in the meson case leads to large 1/{ital m}{sub {ital Q}}{sup 2} corrections which, if ignored, would lead to an apparent discrepancy between {vert_bar}{ital V}{sub {ital c}{ital b}}{vert_bar} extracted from baryon and meson semileptonic decays.

Authors:
; ;  [1]
  1. Department of Physics, University of Toronto, Toronto, Ontario, M5S 1A7 (Canada)
Publication Date:
OSTI Identifier:
142716
Resource Type:
Journal Article
Journal Name:
Physical Review, D
Additional Journal Information:
Journal Volume: 49; Journal Issue: 5; Other Information: PBD: 1 Mar 1994
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; LAMBDA B NEUTRAL BARYONS; SEMILEPTONIC DECAY; CORRECTIONS; QUARK MODEL; LAMBDA C PLUS BARYONS; LEPTONS; ANTINEUTRINOS; WAVE FUNCTIONS; MESONS

Citation Formats

Holdom, B., Sutherland, M., and Mureika, J. Comparison of 1/{ital m}{sub {ital Q}}{sup 2} corrections in mesons and baryons. United States: N. p., 1994. Web. doi:10.1103/PhysRevD.49.2359.
Holdom, B., Sutherland, M., & Mureika, J. Comparison of 1/{ital m}{sub {ital Q}}{sup 2} corrections in mesons and baryons. United States. doi:10.1103/PhysRevD.49.2359.
Holdom, B., Sutherland, M., and Mureika, J. Tue . "Comparison of 1/{ital m}{sub {ital Q}}{sup 2} corrections in mesons and baryons". United States. doi:10.1103/PhysRevD.49.2359.
@article{osti_142716,
title = {Comparison of 1/{ital m}{sub {ital Q}}{sup 2} corrections in mesons and baryons},
author = {Holdom, B. and Sutherland, M. and Mureika, J.},
abstractNote = {We extend our relativistic quark model to the study of the decay {Lambda}{sub {ital b}}{r_arrow}{Lambda}{sub {ital c}l}{bar {nu}} and verify that the model satisfies the heavy-quark symmetry constraints at order 1/{ital m}{sub {ital Q}}{sup 2}. We isolate a strong dependence on a parameter which measures the relative distortion in the light-quark wave functions of the {Lambda}{sub {ital b}} and {Lambda}{sub {ital c}}. This parameter and the 1/{ital m}{sub {ital Q}}{sup 2} corrections are naturally small. The dependence on a corresponding parameter in the meson case leads to large 1/{ital m}{sub {ital Q}}{sup 2} corrections which, if ignored, would lead to an apparent discrepancy between {vert_bar}{ital V}{sub {ital c}{ital b}}{vert_bar} extracted from baryon and meson semileptonic decays.},
doi = {10.1103/PhysRevD.49.2359},
journal = {Physical Review, D},
number = 5,
volume = 49,
place = {United States},
year = {1994},
month = {3}
}