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arxiv: hep-ph/0301076 · v1 · submitted 2003-01-13 · ✦ hep-ph

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Variation of the relative yield of charged and neutral B mesons across the Upsilon(4S) resonance

M.B. Voloshin
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classification ✦ hep-ph
keywords resonancechargedenergymesonsphaseupsilonvariationacross
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It is shown that the ratio of the production rates of the pairs (B+ B-) and (B0 anti-B0) should experience a substantial and rapid variation with energy within the width of the Upsilon(4S) resonance, crossing the value of one near the center of the resonance. This behavior is due to an interference of the rapidly changing with energy Breit-Wigner phase with the phase introduced in the wave function of charged mesons by their Coulomb interaction.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. $\bar B\to D^{(*)}\ell\bar \nu$ Branching Ratios and Evidence for Isospin Breaking in $\Upsilon(4S)$ Decays

    hep-ph 2026-04 unverdicted novelty 5.0

    A combined fit to B to D(*) l nu data yields R^{±0}=1.062(19) as evidence for isospin violation in Υ(4S) decays and branching fractions up to 1.6σ larger than prior averages, addressing inconsistencies in V_cb extractions.