Using a sample of 383x10(6) BB events collected by the BABAR experiment, we measure sums of seven exclusive final states B -> X-d(s)gamma, where X-d(X-s) is a nonstrange (strange) charmless hadronic system in the mass range 0.6-1.8 GeV/c(2). After correcting for unmeasured decay modes in this mass range, we obtain a branching fraction for b -> d gamma of (7.2 +/- 2.7(stat)+/- 2.3(syst))x10(-6). Taking the ratio of X-d to X-s we find Gamma(b -> d gamma)/Gamma(b -> s gamma)=0.033 +/- 0.013(stat)+/- 0.009(syst), from which we determine |V-td/V-ts|=0.177 +/- 0.043.

Measurement of B -> X gamma Decays and Determination of |V-td/V-ts|

Baracchini E;Ferroni F;
2009

Abstract

Using a sample of 383x10(6) BB events collected by the BABAR experiment, we measure sums of seven exclusive final states B -> X-d(s)gamma, where X-d(X-s) is a nonstrange (strange) charmless hadronic system in the mass range 0.6-1.8 GeV/c(2). After correcting for unmeasured decay modes in this mass range, we obtain a branching fraction for b -> d gamma of (7.2 +/- 2.7(stat)+/- 2.3(syst))x10(-6). Taking the ratio of X-d to X-s we find Gamma(b -> d gamma)/Gamma(b -> s gamma)=0.033 +/- 0.013(stat)+/- 0.009(syst), from which we determine |V-td/V-ts|=0.177 +/- 0.043.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12571/1399
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 5
social impact