TY - JOUR
T1 - Threshold effects in excited charmed baryon decays
AU - Blechman, Andrew E.
AU - Falk, Adam F.
AU - Pirjol, Dan
AU - Yelton, John M.
PY - 2003
Y1 - 2003
N2 - Motivated by recent results on charmed baryons from CLEO and FOCUS, we reexamine the couplings of the orbitally excited charmed baryons. Because of its proximity to the [Formula Presented] threshold, the strong decays of the [Formula Presented] are sensitive to finite width effects. This distorts the shape of the invariant mass spectrum in [Formula Presented] from a simple Breit-Wigner resonance, which has implications for the experimental extraction of the [Formula Presented] mass and couplings. We perform a fit to unpublished CLEO data which gives [Formula Presented] and [Formula Presented] with [Formula Presented] the [Formula Presented] strong coupling in the chiral Lagrangian. We also comment on the new orbitally excited states recently observed by CLEO.
AB - Motivated by recent results on charmed baryons from CLEO and FOCUS, we reexamine the couplings of the orbitally excited charmed baryons. Because of its proximity to the [Formula Presented] threshold, the strong decays of the [Formula Presented] are sensitive to finite width effects. This distorts the shape of the invariant mass spectrum in [Formula Presented] from a simple Breit-Wigner resonance, which has implications for the experimental extraction of the [Formula Presented] mass and couplings. We perform a fit to unpublished CLEO data which gives [Formula Presented] and [Formula Presented] with [Formula Presented] the [Formula Presented] strong coupling in the chiral Lagrangian. We also comment on the new orbitally excited states recently observed by CLEO.
UR - http://www.scopus.com/inward/record.url?scp=0037762877&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037762877&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.67.074033
DO - 10.1103/PhysRevD.67.074033
M3 - Article
AN - SCOPUS:0037762877
SN - 1550-7998
VL - 67
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 7
ER -