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

V. Bhardwaj, K. Trabelsi, J. B. Singh, S. K. Choi, S. L. Olsen, I. Adachi, K. Adamczyk, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, E. Barberio, K. Belous, B. Bhuyan, M. Bischofberger, A. Bondar, M. Bračko, J. Brodzicka, T. E. Browder & 123 others A. Chen, P. Chen, B. G. Cheon, K. Cho, Y. Choi, J. Dalseno, Z. Doležal, S. Eidelman, D. Epifanov, V. Gaur, N. Gabyshev, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, M. Iwabuchi, Y. Iwasaki, T. Iwashita, N. J. Joshi, T. Julius, Ju Hwan Kang, T. Kawasaki, C. Kiesling, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Korpar, P. Križan, R. Kumar, T. Kumita, A. Kuzmin, Youngjoon Kwon, J. S. Lange, M. J. Lee, S. H. Lee, Y. Li, J. Libby, C. L. Lim, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, C. Ng, S. Nishida, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, Y. Onuki, G. Pakhlova, C. W. Park, H. K. Park, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Röhrken, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, O. Seon, M. Shapkin, V. Shebalin, T. A. Shibata, J. G. Shiu, B. Shwartz, P. Smerkol, Y. S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, A. Vossen, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, P. Zhou, V. Zhulanov, A. Zupanc

Research output: Contribution to journalArticle

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Abstract

We report a study of B→(J/ψγ)K and B→(ψ γ)K decay modes using 772×106 BB̄ 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 χc2→J/ψγ in B→(Xcc̄γ)K decays, while in a search for X(3872)→ψγ 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 ±→χc2K±)=(1.11-0.34+0. 36±0.09)×10-5, B(B±→X(3872)K ±)B(X(3872)→ψγ)<3. 45×10-6 (upper limit at 90% C.L.), and also provide upper limits for other searches.

Original languageEnglish
Article number091803
JournalPhysical Review Letters
Volume107
Issue number9
DOIs
Publication statusPublished - 2011 Aug 26

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decay
detectors
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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Bhardwaj, V., Trabelsi, K., Singh, J. B., Choi, S. K., Olsen, S. L., Adachi, I., ... Zupanc, A. (2011). Observation of X(3872)→J/ψγ and search for X(3872)→ψγ in B decays. Physical Review Letters, 107(9), [091803]. https://doi.org/10.1103/PhysRevLett.107.091803
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, Ju Hwan ; 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, Youngjoon ; 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. ; Röhrken, M. ; Sahoo, H. ; Sakai, K. ; Sakai, Y. ; Sanuki, T. ; Schneider, O. ; Schwanda, C. ; Seon, O. ; Shapkin, M. ; Shebalin, V. ; Shibata, T. A. ; Shiu, J. G. ; Shwartz, B. ; Smerkol, P. ; Sohn, Y. S. ; Sokolov, A. ; Solovieva, E. ; Stanič, S. ; Starič, M. ; Sumiyoshi, T. ; Tatishvili, G. ; Teramoto, Y. ; Uchida, M. ; Uehara, S. ; Uglov, T. ; Unno, Y. ; Uno, S. ; Usov, Y. ; Varner, G. ; Vossen, A. ; Wang, X. L. ; Watanabe, M. ; Watanabe, Y. ; Williams, K. M. ; Yabsley, B. D. ; Yamashita, Y. ; Yuan, C. Z. ; Zhang, C. C. ; Zhang, Z. P. ; Zhilich, V. ; Zhou, P. ; Zhulanov, V. ; Zupanc, A. / Observation of X(3872)→J/ψγ and search for X(3872)→ψγ in B decays. In: Physical Review Letters. 2011 ; Vol. 107, No. 9.
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title = "Observation of X(3872)→J/ψγ and search for X(3872)→ψ′γ in B decays",
abstract = "We report a study of B→(J/ψγ)K and B→(ψ ′γ)K decay modes using 772×106 BB̄ 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 χc2→J/ψγ in B→(Xcc̄γ)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 ±→χc2K±)=(1.11-0.34+0. 36±0.09)×10-5, B(B±→X(3872)K ±)B(X(3872)→ψ′γ)<3. 45×10-6 (upper limit at 90{\%} C.L.), and also provide upper limits for other searches.",
author = "V. Bhardwaj and K. Trabelsi and Singh, {J. B.} and Choi, {S. K.} and Olsen, {S. L.} and I. Adachi and K. Adamczyk and Asner, {D. M.} and V. Aulchenko and T. Aushev and T. Aziz and Bakich, {A. M.} and E. Barberio and K. Belous and B. Bhuyan and M. Bischofberger and A. Bondar and M. Bračko and J. Brodzicka and Browder, {T. E.} and A. Chen and P. Chen and Cheon, {B. G.} and K. Cho and Y. Choi and J. Dalseno and Z. Doležal and S. Eidelman and D. Epifanov and V. Gaur and N. Gabyshev and B. Golob and J. Haba and K. Hayasaka and H. Hayashii and Y. Horii and Y. Hoshi and Hou, {W. S.} and Hsiung, {Y. B.} and Hyun, {H. J.} and T. Iijima and K. Inami and A. Ishikawa and M. Iwabuchi and Y. Iwasaki and T. Iwashita and Joshi, {N. J.} and T. Julius and Kang, {Ju Hwan} and T. Kawasaki and C. Kiesling and Kim, {H. O.} and Kim, {J. B.} and Kim, {J. H.} and Kim, {K. T.} and Kim, {M. J.} and Kim, {S. K.} and Kim, {Y. J.} and K. Kinoshita and Ko, {B. R.} and N. Kobayashi and S. Korpar and P. Križan and R. Kumar and T. Kumita and A. Kuzmin and Youngjoon Kwon and Lange, {J. S.} and Lee, {M. J.} and Lee, {S. H.} and Y. Li and J. Libby and Lim, {C. L.} and D. Liventsev and R. Louvot and D. Matvienko and S. McOnie and K. Miyabayashi and H. Miyata and Y. Miyazaki and R. Mizuk and Mohanty, {G. B.} and R. Mussa and E. Nakano and M. Nakao and H. Nakazawa and Z. Natkaniec and C. Ng and S. Nishida and O. Nitoh and T. Nozaki and T. Ohshima and S. Okuno and Y. Onuki and G. Pakhlova and Park, {C. W.} and Park, {H. K.} and R. Pestotnik and M. Petrič and Piilonen, {L. E.} and M. R{\"o}hrken and H. Sahoo and K. Sakai and Y. Sakai and T. Sanuki and O. Schneider and C. Schwanda and O. Seon and M. Shapkin and V. Shebalin and Shibata, {T. A.} and Shiu, {J. G.} and B. Shwartz and P. Smerkol and Sohn, {Y. S.} and A. Sokolov and E. Solovieva and S. Stanič and M. Starič and T. Sumiyoshi and G. Tatishvili and Y. Teramoto and M. Uchida and S. Uehara and T. Uglov and Y. Unno and S. Uno and Y. Usov and G. Varner and A. Vossen and Wang, {X. L.} and M. Watanabe and Y. Watanabe and Williams, {K. M.} and Yabsley, {B. D.} and Y. Yamashita and Yuan, {C. Z.} and Zhang, {C. C.} and Zhang, {Z. P.} and V. Zhilich and P. Zhou and V. Zhulanov and A. Zupanc",
year = "2011",
month = "8",
day = "26",
doi = "10.1103/PhysRevLett.107.091803",
language = "English",
volume = "107",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "9",

}

Bhardwaj, V, Trabelsi, K, Singh, JB, Choi, SK, Olsen, SL, Adachi, I, Adamczyk, K, Asner, DM, Aulchenko, V, Aushev, T, Aziz, T, Bakich, AM, Barberio, E, Belous, K, Bhuyan, B, Bischofberger, M, Bondar, A, Bračko, M, Brodzicka, J, Browder, TE, Chen, A, Chen, P, Cheon, BG, 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, WS, Hsiung, YB, Hyun, HJ, Iijima, T, Inami, K, Ishikawa, A, Iwabuchi, M, Iwasaki, Y, Iwashita, T, Joshi, NJ, Julius, T, Kang, JH, Kawasaki, T, Kiesling, C, Kim, HO, Kim, JB, Kim, JH, Kim, KT, Kim, MJ, Kim, SK, Kim, YJ, Kinoshita, K, Ko, BR, Kobayashi, N, Korpar, S, Križan, P, Kumar, R, Kumita, T, Kuzmin, A, Kwon, Y, Lange, JS, Lee, MJ, Lee, SH, Li, Y, Libby, J, Lim, CL, Liventsev, D, Louvot, R, Matvienko, D, McOnie, S, Miyabayashi, K, Miyata, H, Miyazaki, Y, Mizuk, R, Mohanty, GB, 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, CW, Park, HK, Pestotnik, R, Petrič, M, Piilonen, LE, Röhrken, M, Sahoo, H, Sakai, K, Sakai, Y, Sanuki, T, Schneider, O, Schwanda, C, Seon, O, Shapkin, M, Shebalin, V, Shibata, TA, Shiu, JG, Shwartz, B, Smerkol, P, Sohn, YS, Sokolov, A, Solovieva, E, Stanič, S, Starič, M, Sumiyoshi, T, Tatishvili, G, Teramoto, Y, Uchida, M, Uehara, S, Uglov, T, Unno, Y, Uno, S, Usov, Y, Varner, G, Vossen, A, Wang, XL, Watanabe, M, Watanabe, Y, Williams, KM, Yabsley, BD, Yamashita, Y, Yuan, CZ, Zhang, CC, Zhang, ZP, Zhilich, V, Zhou, P, Zhulanov, V & Zupanc, A 2011, 'Observation of X(3872)→J/ψγ and search for X(3872)→ψγ in B decays', Physical Review Letters, vol. 107, no. 9, 091803. https://doi.org/10.1103/PhysRevLett.107.091803

Observation of X(3872)→J/ψγ and search for X(3872)→ψγ in B decays. / 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, Ju Hwan; 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, Youngjoon; 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.; Röhrken, M.; Sahoo, H.; Sakai, K.; Sakai, Y.; Sanuki, T.; Schneider, O.; Schwanda, C.; Seon, O.; Shapkin, M.; Shebalin, V.; Shibata, T. A.; Shiu, J. G.; Shwartz, B.; Smerkol, P.; Sohn, Y. S.; Sokolov, A.; Solovieva, E.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Tatishvili, G.; Teramoto, Y.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Usov, Y.; Varner, G.; Vossen, A.; Wang, X. L.; Watanabe, M.; Watanabe, Y.; Williams, K. M.; Yabsley, B. D.; Yamashita, Y.; Yuan, C. Z.; Zhang, C. C.; Zhang, Z. P.; Zhilich, V.; Zhou, P.; Zhulanov, V.; Zupanc, A.

In: Physical Review Letters, Vol. 107, No. 9, 091803, 26.08.2011.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Observation of X(3872)→J/ψγ and search for X(3872)→ψ′γ in B decays

AU - Bhardwaj, V.

AU - Trabelsi, K.

AU - Singh, J. B.

AU - Choi, S. K.

AU - Olsen, S. L.

AU - Adachi, I.

AU - Adamczyk, K.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Aziz, T.

AU - Bakich, A. M.

AU - Barberio, E.

AU - Belous, K.

AU - Bhuyan, B.

AU - Bischofberger, M.

AU - Bondar, A.

AU - Bračko, M.

AU - Brodzicka, J.

AU - Browder, T. E.

AU - Chen, A.

AU - Chen, P.

AU - Cheon, B. G.

AU - Cho, K.

AU - Choi, Y.

AU - Dalseno, J.

AU - Doležal, Z.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Golob, B.

AU - Haba, J.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Horii, Y.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Ishikawa, A.

AU - Iwabuchi, M.

AU - Iwasaki, Y.

AU - Iwashita, T.

AU - Joshi, N. J.

AU - Julius, T.

AU - Kang, Ju Hwan

AU - Kawasaki, T.

AU - Kiesling, C.

AU - Kim, H. O.

AU - Kim, J. B.

AU - Kim, J. H.

AU - Kim, K. T.

AU - Kim, M. J.

AU - Kim, S. K.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Ko, B. R.

AU - Kobayashi, N.

AU - Korpar, S.

AU - Križan, P.

AU - Kumar, R.

AU - Kumita, T.

AU - Kuzmin, A.

AU - Kwon, Youngjoon

AU - Lange, J. S.

AU - Lee, M. J.

AU - Lee, S. H.

AU - Li, Y.

AU - Libby, J.

AU - Lim, C. L.

AU - Liventsev, D.

AU - Louvot, R.

AU - Matvienko, D.

AU - McOnie, S.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mizuk, R.

AU - Mohanty, G. B.

AU - Mussa, R.

AU - Nakano, E.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Natkaniec, Z.

AU - Ng, C.

AU - Nishida, S.

AU - Nitoh, O.

AU - Nozaki, T.

AU - Ohshima, T.

AU - Okuno, S.

AU - Onuki, Y.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H. K.

AU - Pestotnik, R.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Röhrken, M.

AU - Sahoo, H.

AU - Sakai, K.

AU - Sakai, Y.

AU - Sanuki, T.

AU - Schneider, O.

AU - Schwanda, C.

AU - Seon, O.

AU - Shapkin, M.

AU - Shebalin, V.

AU - Shibata, T. A.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Smerkol, P.

AU - Sohn, Y. S.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Stanič, S.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Tatishvili, G.

AU - Teramoto, Y.

AU - Uchida, M.

AU - Uehara, S.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Usov, Y.

AU - Varner, G.

AU - Vossen, A.

AU - Wang, X. L.

AU - Watanabe, M.

AU - Watanabe, Y.

AU - Williams, K. M.

AU - Yabsley, B. D.

AU - Yamashita, Y.

AU - Yuan, C. Z.

AU - Zhang, C. C.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhou, P.

AU - Zhulanov, V.

AU - Zupanc, A.

PY - 2011/8/26

Y1 - 2011/8/26

N2 - We report a study of B→(J/ψγ)K and B→(ψ ′γ)K decay modes using 772×106 BB̄ 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 χc2→J/ψγ in B→(Xcc̄γ)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 ±→χc2K±)=(1.11-0.34+0. 36±0.09)×10-5, B(B±→X(3872)K ±)B(X(3872)→ψ′γ)<3. 45×10-6 (upper limit at 90% C.L.), and also provide upper limits for other searches.

AB - We report a study of B→(J/ψγ)K and B→(ψ ′γ)K decay modes using 772×106 BB̄ 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 χc2→J/ψγ in B→(Xcc̄γ)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 ±→χc2K±)=(1.11-0.34+0. 36±0.09)×10-5, B(B±→X(3872)K ±)B(X(3872)→ψ′γ)<3. 45×10-6 (upper limit at 90% C.L.), and also provide upper limits for other searches.

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UR - http://www.scopus.com/inward/citedby.url?scp=80052231000&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.107.091803

DO - 10.1103/PhysRevLett.107.091803

M3 - Article

VL - 107

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 9

M1 - 091803

ER -

Bhardwaj V, Trabelsi K, Singh JB, Choi SK, Olsen SL, Adachi I et al. Observation of X(3872)→J/ψγ and search for X(3872)→ψγ in B decays. Physical Review Letters. 2011 Aug 26;107(9). 091803. https://doi.org/10.1103/PhysRevLett.107.091803