Extracting the Light Quark Mass Ratio m{sub u}/m{sub d} from Bottomonia Transitions

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.162001· OSTI ID:21467022

Fengkun, Guo ^[1]; Hanhart, Christoph ^[1]; Meissner, Ulf-G ^[1]

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1. Institut fuer Kernphysik and Juelich Center for Hadron Physics, Forschungszentrum Juelich, D-52425 Juelich (Germany)

We propose a new method to extract the light quark mass ratio m{sub u}/m{sub d} using the {Upsilon}(4S){yields}h{sub b{pi}}{sup 0}({eta}) bottomonia transitions. The decay amplitudes are dominated by the light quark mass differences, and the corrections from other effects are rather small, allowing for a precise extraction. We also discuss how to reduce the theoretical uncertainty with the help of future experiments. As a by-product, we show that the decay {Upsilon}(4S){yields}h{sub b{eta}} is expected to be a nice channel for searching for the h{sub b} state.

• OSTI ID: 21467022
• Journal Information: Physical Review Letters, Vol. 105, Issue 16; Other Information: DOI: 10.1103/PhysRevLett.105.162001; (c) 2010 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BEAUTY MESONS
CORRECTIONS
D QUARKS
DECAY AMPLITUDES
ETA MESONS
MASS DIFFERENCE
PARTICLE DECAY
PIONS NEUTRAL
REST MASS
U QUARKS
UPSILON-10580 MESONS
AMPLITUDES
BEAUTY PARTICLES
BOSONS
BOTTOMONIUM
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
MASS
MESONS
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUARKONIUM
QUARKS
TRANSITION AMPLITUDES
VECTOR MESONS