scholarly journals Heavy-quark spin symmetry for charmed and strange baryon resonances

2013 ◽  
Vol 914 ◽  
pp. 488-493 ◽  
Author(s):  
Olena Romanets ◽  
Laura Tolos ◽  
Carmen García-Recio ◽  
Juan Nieves ◽  
Lorenzo Luis Salcedo ◽  
...  
Keyword(s):  
Heavy Quark ◽  
Spin Symmetry ◽  
Strange Baryon ◽  
Quark Spin ◽  
Heavy Quark Spin Symmetry ◽  
Baryon Resonances

scholarly journals Charmed and strange baryon resonances with heavy-quark spin symmetry

2012 ◽  
Author(s):  
Olena Romanets ◽  
Laura Tolos ◽  
Carmen García-Recio ◽  
Juan Nieves ◽  
L. L Salcedo ◽  
...  
Keyword(s):  
Heavy Quark ◽  
Spin Symmetry ◽  
Strange Baryon ◽  
Quark Spin ◽  
Heavy Quark Spin Symmetry ◽  
Baryon Resonances

scholarly journals Charmed and strange baryon resonances with heavy-quark spin symmetry

2012 ◽  
Vol 85 (11) ◽  
Author(s):  
O. Romanets ◽  
L. Tolos ◽  
C. García-Recio ◽  
J. Nieves ◽  
L. L. Salcedo ◽  
...  
Keyword(s):  
Heavy Quark ◽  
Spin Symmetry ◽  
Strange Baryon ◽  
Quark Spin ◽  
Heavy Quark Spin Symmetry ◽  
Baryon Resonances

scholarly journals N AND Δ HIDDEN-CHARM RESONANCES WITH HEAVY-QUARK SPIN SYMMETRY

2014 ◽  
Vol 26 ◽  
pp. 1460108
Author(s):  
OLENA ROMANETS ◽  
CARMEN GARCÍA-RECIO ◽  
LORENZO LUIS SALCEDO ◽  
JUAN NIEVES ◽  
LAURA TOLÓS
Keyword(s):  
Heavy Quark ◽  
Bound States ◽  
Wave Interaction ◽  
Spin Symmetry ◽  
S Wave ◽  
Coupled Channels ◽  
Quark Spin ◽  
Charm Baryon ◽  
Heavy Quark Spin Symmetry ◽  
Baryon Resonances

We study N and Δ hidden-charm baryon resonances that are generated dynamically from the s-wave interaction of pseudoscalar and vector mesons with 1/2+ and 3/2+ baryons. We use a unitary coupled-channels model that fulfills heavy-quark spin symmetry and respects spin-flavor symmetry in the light sector. We predict seven N-like and five Δ-like states with masses around 4 GeV, most of them as bound states. Some of these states form heavy-quark spin multiplets, which are almost degenerate in mass.

HYPERFINE MIXING IN b → c SEMILEPTONIC AND ELECTROMAGNETIC DECAYS OF DOUBLY HEAVY bc BARYONS

2014 ◽  
Vol 26 ◽  
pp. 1460107
Author(s):  
C. ALBERTUS ◽  
E. HERNÁNDEZ ◽  
J. NIEVES
Keyword(s):  
Heavy Quark ◽  
Quark Mass ◽  
Semileptonic Decay ◽  
Spin Symmetry ◽  
Mass Limit ◽  
Electromagnetic Decays ◽  
Heavy Quark Mass ◽  
Quark Spin ◽  
Heavy Quark Spin Symmetry ◽  
Symmetry Relations

We show that semileptonic and electromagnetic decays involving spin-1/2 doubly heavy bc baryons are very sensitive to hyperfine mixing in their wave functions. We further show how heavy quark spin symmetry relations, obtained in the infinite heavy quark mass limit and near zero recoil, could be used to extract the admixtures in a model independent way from semileptonic decay data. On the other hand the infinite heavy quark mass limit gives wrong predictions in the electromagnetic case.

scholarly journals Enhanced breaking of heavy quark spin symmetry

2014 ◽  
Vol 738 ◽  
pp. 172-177 ◽  
Author(s):  
Feng-Kun Guo ◽  
Ulf-G. Meißner ◽  
Cheng-Ping Shen
Keyword(s):  
Heavy Quark ◽  
Spin Symmetry ◽  
Quark Spin ◽  
Heavy Quark Spin Symmetry
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