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Author Huang, M. ♦ Dai, Y. ♦ Huang, C.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ PERTURBATION THEORY ♦ CHIRAL SYMMETRY ♦ LAMBDA BARYONS ♦ PARTICLE DECAY ♦ SIGMA BARYONS ♦ LAGRANGIAN FUNCTION ♦ CHARMED BARYONS ♦ EXCITED STATES ♦ GROUND STATES ♦ COUPLING CONSTANTS ♦ NUMERICAL ANALYSIS ♦ P WAVES ♦ PIONS ♦ QUARKS
Abstract Ground states and some excited {ital p}-wave states of heavy baryons are studied within the framework of heavy hadron chiral perturbation theory. The effective Lagrangian is written out to terms of the next-to-leading order in 1/{ital m}{sub {ital Q}} or 1/{Lambda}{sub {chi}}. The coupling constants are estimated using the experimental data of {Lambda} and {Sigma} baryons in the static limit of the {ital s} quark. The single pion and double pion decay rates of these charmed baryons have been estimated. The numerical results show that both {Lambda}{sub {ital c}}(1/2{sup {minus}}) and {Lambda}{sub {ital c}}(3/2{sup {minus}}) are very narrow. We conclude that the two pion channel may offer the best hope for detecting the {Sigma}{sub {ital c}}(3/2{sup {minus}}) and {Sigma}{sub {ital c}}(1/2{sup {minus}}) {ital p}-wave doublet.
ISSN 05562821
Educational Use Research
Learning Resource Type Article
Publisher Date 1995-10-01
Publisher Place United States
Journal Physical Review, D
Volume Number 52
Issue Number 7


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