We present a study of the decays B+→ρ+γ, B0→ρ0γ, and B0→ωγ. The analysis is based on data containing 347×106 BB̄ events recorded with the BABAR detector at the PEP-II asymmetric B factory. We measure the branching fractions B(B+→ρ+γ)=(1.10-0.33+0.37±0.09)×10-6 and B(B0→ρ0γ)=(0.79-0.20+0.22±0.06)×10-6, and set a 90% C.L. upper limit B(B0→ωγ)<0.78×10-6. We also measure the isospin-averaged branching fraction B(B→(ρ/ω)γ)=(1.25- 0.24+0.25±0.09)×10-6, from which we determine |Vtd/Vts|=0.200-0. 020+0.021±0.015, where the first uncertainty is experimental and the second is theoretical.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Branching fraction measurements of B+→ρ+γ, B0→ρ0γ, and B0→ωγ. PHYSICAL REVIEW LETTERS, 98(15) [10.1103/PhysRevLett.98.151802].

Branching fraction measurements of B+→ρ+γ, B0→ρ0γ, and B0→ωγ

CARPINELLI, Massimo;
2007

Abstract

We present a study of the decays B+→ρ+γ, B0→ρ0γ, and B0→ωγ. The analysis is based on data containing 347×106 BB̄ events recorded with the BABAR detector at the PEP-II asymmetric B factory. We measure the branching fractions B(B+→ρ+γ)=(1.10-0.33+0.37±0.09)×10-6 and B(B0→ρ0γ)=(0.79-0.20+0.22±0.06)×10-6, and set a 90% C.L. upper limit B(B0→ωγ)<0.78×10-6. We also measure the isospin-averaged branching fraction B(B→(ρ/ω)γ)=(1.25- 0.24+0.25±0.09)×10-6, from which we determine |Vtd/Vts|=0.200-0. 020+0.021±0.015, where the first uncertainty is experimental and the second is theoretical.
Articolo in rivista - Articolo scientifico
Atomic physics; Electric charge; Measurement theory; Particle detectors; Quantum theory; Branching fractions; Isospin; Elementary particles;
English
2007
98
15
151802
none
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Branching fraction measurements of B+→ρ+γ, B0→ρ0γ, and B0→ωγ. PHYSICAL REVIEW LETTERS, 98(15) [10.1103/PhysRevLett.98.151802].
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/10281/389658
Citazioni
  • Scopus 37
  • ???jsp.display-item.citation.isi??? 24
Social impact