In a search for B→cc̄γK decays with the BABAR detector, where cc̄ includes J/ψ and ψ(2S), and K includes K±, KS0, and K*(892), we find evidence for X(3872)→J/ψγ and X(3872)→ψ(2S)γ with 3.6σ and 3.5σ significance, respectively. We measure the product of branching fractions B(B±→ X(3872)K±)×B(X(3872)→J/ψγ)=[2.8±0.8(stat) ±0.1(syst)]×10-6 and B(B±→X(3872)K±) ×B(X(3872)→ψ(2S)γ)=[9.5±2.7(stat)±0.6(syst)] ×10-6.

Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2009). Evidence for X(3872)→ψ(2S)γ in B±→X(3872) K± Decays and a Study of B→cc̄γK. PHYSICAL REVIEW LETTERS, 102(13) [10.1103/PhysRevLett.102.132001].

Evidence for X(3872)→ψ(2S)γ in B±→X(3872) K± Decays and a Study of B→cc̄γK

CARPINELLI, Massimo;
2009

Abstract

In a search for B→cc̄γK decays with the BABAR detector, where cc̄ includes J/ψ and ψ(2S), and K includes K±, KS0, and K*(892), we find evidence for X(3872)→J/ψγ and X(3872)→ψ(2S)γ with 3.6σ and 3.5σ significance, respectively. We measure the product of branching fractions B(B±→ X(3872)K±)×B(X(3872)→J/ψγ)=[2.8±0.8(stat) ±0.1(syst)]×10-6 and B(B±→X(3872)K±) ×B(X(3872)→ψ(2S)γ)=[9.5±2.7(stat)±0.6(syst)] ×10-6.
Articolo in rivista - Articolo scientifico
BABAR detector
English
2009
B. Aubert et al. (The BABAR Collaboration)
Aubert, B., Bona, M., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., et al. (2009). Evidence for X(3872)→ψ(2S)γ in B±→X(3872) K± Decays and a Study of B→cc̄γK. PHYSICAL REVIEW LETTERS, 102(13) [10.1103/PhysRevLett.102.132001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389358
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