Observation of X(3872)→J/ψγ and search for X(3872)→ψ'γ in B decays

Observation of X(3872)→J/ψγ and search for X(3872)→ψ'γ in B decays

We report a study of B→(J/ψγ)K and B→(ψ'γ)K decay modes using 772×10⁶ B ̅B events collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We observe X(3872)→J/ψγ and report the first evidence for χ(c2)→J/ψγ in B→(X_{c ̅cγ)K decays, while in a se...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physical review letters 2011-08, Vol.107 (9), p.091803-091803
Hauptverfasser: Bhardwaj, V, Trabelsi, K, Singh, J B, Choi, S-K, Olsen, S L, Adachi, I, Adamczyk, K, Asner, D M, Aulchenko, V, Aushev, T, Aziz, T, Bakich, A M, Barberio, E, Belous, K, Bhuyan, B, Bischofberger, M, Bondar, A, Bračko, M, Brodzicka, J, Browder, T E, Chen, A, Chen, P, Cheon, B G, Cho, K, Choi, Y, Dalseno, J, Doležal, Z, Eidelman, S, Epifanov, D, Gaur, V, Gabyshev, N, Golob, B, Haba, J, Hayasaka, K, Hayashii, H, Horii, Y, Hoshi, Y, Hou, W-S, Hsiung, Y B, Hyun, H J, Iijima, T, Inami, K, Ishikawa, A, Iwabuchi, M, Iwasaki, Y, Iwashita, T, Joshi, N J, Julius, T, Kang, J H, Kawasaki, T, Kiesling, C, Kim, H O, Kim, J B, Kim, J H, Kim, K T, Kim, M J, Kim, S K, Kim, Y J, Kinoshita, K, Ko, B R, Kobayashi, N, Korpar, S, Križan, P, Kumar, R, Kumita, T, Kuzmin, A, Kwon, Y-J, Lange, J S, Lee, M J, Lee, S-H, Li, Y, Libby, J, Lim, C-L, Liventsev, D, Louvot, R, Matvienko, D, McOnie, S, Miyabayashi, K, Miyata, H, Miyazaki, Y, Mizuk, R, Mohanty, G B, Mussa, R, Nakano, E, Nakao, M, Nakazawa, H, Natkaniec, Z, Ng, C, Nishida, S, Nitoh, O, Nozaki, T, Ohshima, T, Okuno, S, Onuki, Y, Pakhlova, G, Park, C W, Park, H K, Pestotnik, R, Petrič, M, Piilonen, L E
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We report a study of B→(J/ψγ)K and B→(ψ'γ)K decay modes using 772×10⁶ B ̅B events collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We observe X(3872)→J/ψγ and report the first evidence for χ(c2)→J/ψγ in B→(X_{c ̅cγ)K decays, while in a search for X(3872)→ψ'γ no significant signal is found. We measure the branching fractions, B(B(±)→X(3872)K(±))B(X(3872)→J/ψγ)=(1.78(-0.44)(+0.48)±0.12)×10(-6), B(B(±)→χ(c2)K(±))=(1.11(-0.34)(+0.36)±0.09)×10(-5), B(B(±)→X(3872)K(±))B(X(3872)→ψ'γ)
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.107.091803