Excitations of single-beauty hadrons

Journal Article · Thu Jan 01 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.014504· OSTI ID:21254723

Burch, Tommy ^[1]; Hagen, Christian ^[2]; Lang, Christian B; Limmer, Markus ^[3]; Schaefer, Andreas ^[2]

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1. Department of Physics, University of Utah, Salt Lake City, Utah 84112 (United States)
2. Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg (Germany)
3. Institut fuer Physik, FB Theoretische Physik, Universitaet Graz, A-8010 Graz (Austria)

In this work we study the predominantly orbital and radial excitations of hadrons containing a single heavy quark. We present meson and baryon mass splittings and ratios of meson decay constants (e.g., f{sub B{sub s}}/f{sub B} and f{sub B{sub s}}{sub {sup '}}/f{sub B{sub s}}) resulting from quenched and dynamical two-flavor configurations. Light quarks are simulated using the chirally improved lattice Dirac operator at valence masses as light as M{sub {pi}}{approx_equal}350 MeV. The heavy quark is approximated by a static propagator, appropriate for the b quark on our lattices (1/a{approx}1-2 GeV). We also include some preliminary calculations of the O(1/m{sub Q}) kinetic corrections to the states, showing, in the process, a viable way of applying the variational method to three-point functions involving excited states. We compare our results with recent experimental findings.

• OSTI ID: 21254723
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
COMPARATIVE EVALUATIONS
CONFIGURATION
CORRECTIONS
DIRAC OPERATORS
EXCITATION
EXCITED STATES
FLAVOR MODEL
GEV RANGE 01-10
MASS
MESONS
MEV RANGE 100-1000
PARTICLE DECAY
PROPAGATOR
QUARKS
SIMULATION
VARIATIONAL METHODS