In a search for B→cc⎯⎯γK decays with the BABAR detector, where cc⎯⎯ includes J/ψ and ψ(2S), and K includes K±, K0S, 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.p., Poireau, V., Prencipe, E., et al. (2009). Evidence for X(3872)->psi(2S)gamma in B-+/--> X(3872)K-+/- Decays and a Study of B -> cc gamma K. PHYSICAL REVIEW LETTERS, 102(13), 1-7 [10.1103/PhysRevLett.102.132001].

Evidence for X(3872)->psi(2S)gamma in B-+/--> X(3872)K-+/- Decays and a Study of B -> cc gamma K

PATRIGNANI, CLAUDIA;
2009

Abstract

In a search for B→cc⎯⎯γK decays with the BABAR detector, where cc⎯⎯ includes J/ψ and ψ(2S), and K includes K±, K0S, 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.
2009
Aubert, B., Bona, M., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., et al. (2009). Evidence for X(3872)->psi(2S)gamma in B-+/--> X(3872)K-+/- Decays and a Study of B -> cc gamma K. PHYSICAL REVIEW LETTERS, 102(13), 1-7 [10.1103/PhysRevLett.102.132001].
Aubert, B; Bona, M; Karyotakis, Y; Lees, Jp; Poireau, V; Prencipe, E; Prudent, X; Tisserand, V; Tico, Jg; Grauges, E; Lopez, L; Palano, A; Pappagallo,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/544845
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