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
102
13
132001
none
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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