Elastic s-wave B{pi}, D{pi}, DK and K{pi} scattering from lattice calculations of scalar form factors in semileptonic decays

Journal Article · Sun Apr 01 00:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.074024· OSTI ID:21020284

Flynn, Jonathan M ^[1]; Nieves, Juan ^[2]

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1. School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom)
2. Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Granada, E-18071 Granada (Spain)

We show how theoretical, principally lattice calculations of the scalar form factors in semileptonic pseudoscalar-to-pseudoscalar decays can be used to extract information about the corresponding elastic s-wave scattering channels. We find values for the scattering lengths m{sub {pi}}a=0.179(17)(14), 0.26(26) and 0.29(4) for elastic s-wave isospin-1/2 K{pi}, B{pi} and D{pi} channels, respectively. We also determine phase shifts. For the DK channel we find hints that there is a bound state which can be identified with the recently discovered D{sub s0}{sup +}(2317)

• OSTI ID: 21020284
• Journal Information: Physical Review. D, Particles Fields, Vol. 75, Issue 7; Other Information: DOI: 10.1103/PhysRevD.75.074024; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
BOUND STATE
D MESONS
D S MESONS
ELASTIC SCATTERING
FORM FACTORS
ISOSPIN
KAONS
LATTICE FIELD THEORY
PHASE SHIFT
PIONS
S WAVES
SCALARS
SCATTERING LENGTHS
SEMILEPTONIC DECAY