Evidence of a new narrow resonance decaying to χc1γ in B→χc1γK

V. Bhardwaj; K. Miyabayashi; I. Adachi; H. Aihara; D. M. Asner; V. Aulchenko; T. Aushev; T. Aziz; A. M. Bakich; A. Bala; B. Bhuyan; M. Bischofberger; A. Bondar; G. Bonvicini; A. Bozek; M. Bračko; J. Brodzicka; T. E. Browder; V. Chekelian; A. Chen; B. G. Cheon; K. Chilikin; R. Chistov; K. Cho; V. Chobanova; S. K. Choi; Y. Choi; D. Cinabro; J. Dalseno; M. Danilov; Z. Doležal; Z. Drásal; A. Drutskoy; D. Dutta; K. Dutta; S. Eidelman; D. Epifanov; H. Farhat; J. E. Fast; T. Ferber; A. Frey; V. Gaur; N. Gabyshev; S. Ganguly; R. Gillard; Y. M. Goh; B. Golob; J. Haba; T. Hara; H. Hayashii; Y. Horii; Y. Hoshi; W. S. Hou; Y. B. Hsiung; H. J. Hyun; T. Iijima; K. Inami; A. Ishikawa; R. Itoh; T. Iwashita; T. Julius; D. H. Kah; J. H. Kang; E. Kato; T. Kawasaki; H. Kichimi; C. Kiesling; D. Y. Kim; J. B. Kim; J. H. Kim; K. T. Kim; M. J. Kim; Y. J. Kim; K. Kinoshita; J. Klucar; B. R. Ko; P. Kodyš; S. Korpar; P. Križan; P. Krokovny; R. Kumar; T. Kumita; A. Kuzmin; Y. J. Kwon; J. S. Lange; S. H. Lee; J. Li; Y. Li; C. Liu; Z. Q. Liu; D. Liventsev; P. Lukin; D. Matvienko; H. Miyata; R. Mizuk; G. B. Mohanty; A. Moll; R. Mussa; E. Nakano; M. Nakao; Z. Natkaniec; M. Nayak; E. Nedelkovska; N. K. Nisar; S. Nishida; O. Nitoh; S. Ogawa; S. Okuno; S. L. Olsen; P. Pakhlov; G. Pakhlova; E. Panzenböck; H. Park; H. K. Park; T. K. Pedlar; R. Pestotnik; M. Petrič; L. E. Piilonen; M. Ritter; M. Röhrken; A. Rostomyan; H. Sahoo; T. Saito; K. Sakai; Y. Sakai; S. Sandilya; D. Santel; L. Santelj; T. Sanuki; Y. Sato; V. Savinov; O. Schneider; G. Schnell; C. Schwanda; R. Seidl; D. Semmler; K. Senyo; O. Seon; M. E. Sevior; M. Shapkin; C. P. Shen; T. A. Shibata; J. G. Shiu; B. Shwartz; F. Simon; J. B. Singh; P. Smerkol; Y. S. Sohn; A. Sokolov; E. Solovieva; M. Starič; M. Steder; M. Sumihama; T. Sumiyoshi; U. Tamponi; K. Tanida; G. Tatishvili; Y. Teramoto; K. Trabelsi; T. Tsuboyama; M. Uchida; S. Uehara; T. Uglov; Y. Unno; P. Urquijo; Y. Usov; S. E. Vahsen; C. Van Hulse; P. Vanhoefer; G. Varner; K. E. Varvell; A. Vinokurova; M. N. Wagner; C. H. Wang; M. Z. Wang; P. Wang; M. Watanabe; Y. Watanabe; E. Won; B. D. Yabsley; J. Yamaoka; Y. Yamashita; S. Yashchenko; Y. Yook; C. Z. Yuan; C. C. Zhang; Z. P. Zhang; V. Zhilich; V. Zhulanov; A. Zupanc

doi:10.1103/PhysRevLett.111.032001

Evidence of a new narrow resonance decaying to χ_c1γ in B→χ_c1γK

V. Bhardwaj, K. Miyabayashi, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bala, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, V. Chekelian, A. ChenB. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, K. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, T. Iwashita, T. Julius, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, R. Kumar, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, Y. Li, C. Liu, Z. Q. Liu, D. Liventsev, P. Lukin, D. Matvienko, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, E. Panzenböck, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Ritter, M. Röhrken, A. Rostomyan, H. Sahoo, T. Saito, K. Sakai, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, R. Seidl, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. A. Shibata, J. G. Shiu, B. Shwartz, F. Simon, J. B. Singh, P. Smerkol, Y. S. Sohn, A. Sokolov, E. Solovieva, M. Starič, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, P. Urquijo, Y. Usov, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, M. N. Wagner, C. H. Wang, M. Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Won, B. D. Yabsley, J. Yamaoka, Y. Yamashita, S. Yashchenko, Y. Yook, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

School of Earth System Sciences

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Abstract

We report measurements of B→χ_c1γK and χ_c2γK decays using 772×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e⁺e^- collider. Evidence of a new resonance in the χ_c1γ final state is found with a statistical significance of 3.8σ. This state has a mass of 3823.1±1.8(stat)±0.7(syst) MeV/c2, a value that is consistent with theoretical expectations for the previously unseen 1D23 cc̄ meson. We find no other narrow resonance and set upper limits on the branching fractions of the X(3872)→χ_c1γ and χ_c2γ decays.

Original language	English
Article number	032001
Journal	Physical Review Letters
Volume	111
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.111.032001
State	Published - 16 Jul 2013

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10.1103/PhysRevLett.111.032001

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Bhardwaj, V., Miyabayashi, K., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Aziz, T., Bakich, A. M., Bala, A., Bhuyan, B., Bischofberger, M., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., Chekelian, V., ... Zupanc, A. (2013). Evidence of a new narrow resonance decaying to χ_c1γ in B→χ_c1γK. Physical Review Letters, 111(3), Article 032001. https://doi.org/10.1103/PhysRevLett.111.032001

@article{241271bb59934418b5e306efe38b9eac,

title = "Evidence of a new narrow resonance decaying to χc1γ in B→χc1γK",

abstract = "We report measurements of B→χc1γK and χc2γK decays using 772×106 B{\=B} events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Evidence of a new resonance in the χc1γ final state is found with a statistical significance of 3.8σ. This state has a mass of 3823.1±1.8(stat)±0.7(syst) MeV/c2, a value that is consistent with theoretical expectations for the previously unseen 1D23 c{\=c} meson. We find no other narrow resonance and set upper limits on the branching fractions of the X(3872)→χc1γ and χc2γ decays.",

author = "V. Bhardwaj and K. Miyabayashi and I. Adachi and H. Aihara and Asner, {D. M.} and V. Aulchenko and T. Aushev and T. Aziz and Bakich, {A. M.} and A. Bala and B. Bhuyan and M. Bischofberger and A. Bondar and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and J. Brodzicka and Browder, {T. E.} and V. Chekelian and A. Chen and Cheon, {B. G.} and K. Chilikin and R. Chistov and K. Cho and V. Chobanova and Choi, {S. K.} and Y. Choi and D. Cinabro and J. Dalseno and M. Danilov and Z. Dole{\v z}al and Z. Dr{\'a}sal and A. Drutskoy and D. Dutta and K. Dutta and S. Eidelman and D. Epifanov and H. Farhat and Fast, {J. E.} and T. Ferber and A. Frey and V. Gaur and N. Gabyshev and S. Ganguly and R. Gillard and Goh, {Y. M.} and B. Golob and J. Haba and T. Hara 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 R. Itoh and T. Iwashita and T. Julius and Kah, {D. H.} and Kang, {J. H.} and E. Kato and T. Kawasaki and H. Kichimi and C. Kiesling and Kim, {D. Y.} and Kim, {J. B.} and Kim, {J. H.} and Kim, {K. T.} and Kim, {M. J.} and Kim, {Y. J.} and K. Kinoshita and J. Klucar and Ko, {B. R.} and P. Kody{\v s} and S. Korpar and P. Kri{\v z}an and P. Krokovny and R. Kumar and T. Kumita and A. Kuzmin and Kwon, {Y. J.} and Lange, {J. S.} and Lee, {S. H.} and J. Li and Y. Li and C. Liu and Liu, {Z. Q.} and D. Liventsev and P. Lukin and D. Matvienko and H. Miyata and R. Mizuk and Mohanty, {G. B.} and A. Moll and R. Mussa and E. Nakano and M. Nakao and Z. Natkaniec and M. Nayak and E. Nedelkovska and Nisar, {N. K.} and S. Nishida and O. Nitoh and S. Ogawa and S. Okuno and Olsen, {S. L.} and P. Pakhlov and G. Pakhlova and E. Panzenb{\"o}ck and H. Park and Park, {H. K.} and Pedlar, {T. K.} and R. Pestotnik and M. Petri{\v c} and Piilonen, {L. E.} and M. Ritter and M. R{\"o}hrken and A. Rostomyan and H. Sahoo and T. Saito and K. Sakai and Y. Sakai and S. Sandilya and D. Santel and L. Santelj and T. Sanuki and Y. Sato and V. Savinov and O. Schneider and G. Schnell and C. Schwanda and R. Seidl and D. Semmler and K. Senyo and O. Seon and Sevior, {M. E.} and M. Shapkin and Shen, {C. P.} and Shibata, {T. A.} and Shiu, {J. G.} and B. Shwartz and F. Simon and Singh, {J. B.} and P. Smerkol and Sohn, {Y. S.} and A. Sokolov and E. Solovieva and M. Stari{\v c} and M. Steder and M. Sumihama and T. Sumiyoshi and U. Tamponi and K. Tanida and G. Tatishvili and Y. Teramoto and K. Trabelsi and T. Tsuboyama and M. Uchida and S. Uehara and T. Uglov and Y. Unno and P. Urquijo and Y. Usov and Vahsen, {S. E.} and {Van Hulse}, C. and P. Vanhoefer and G. Varner and Varvell, {K. E.} and A. Vinokurova and Wagner, {M. N.} and Wang, {C. H.} and Wang, {M. Z.} and P. Wang and M. Watanabe and Y. Watanabe and E. Won and Yabsley, {B. D.} and J. Yamaoka and Y. Yamashita and S. Yashchenko and Y. Yook and Yuan, {C. Z.} and Zhang, {C. C.} and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and A. Zupanc",

year = "2013",

month = jul,

day = "16",

doi = "10.1103/PhysRevLett.111.032001",

language = "English",

volume = "111",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "3",

}

Bhardwaj, V, Miyabayashi, K, Adachi, I, Aihara, H, Asner, DM, Aulchenko, V, Aushev, T, Aziz, T, Bakich, AM, Bala, A, Bhuyan, B, Bischofberger, M, Bondar, A, Bonvicini, G, Bozek, A, Bračko, M, Brodzicka, J, Browder, TE, Chekelian, V, Chen, A, Cheon, BG, Chilikin, K, Chistov, R, Cho, K, Chobanova, V, Choi, SK, Choi, Y, Cinabro, D, Dalseno, J, Danilov, M, Doležal, Z, Drásal, Z, Drutskoy, A, Dutta, D, Dutta, K, Eidelman, S, Epifanov, D, Farhat, H, Fast, JE, Ferber, T, Frey, A, Gaur, V, Gabyshev, N, Ganguly, S, Gillard, R, Goh, YM, Golob, B, Haba, J, Hara, T, Hayashii, H, Horii, Y, Hoshi, Y, Hou, WS, Hsiung, YB, Hyun, HJ, Iijima, T, Inami, K, Ishikawa, A, Itoh, R, Iwashita, T, Julius, T, Kah, DH, Kang, JH, Kato, E, Kawasaki, T, Kichimi, H, Kiesling, C, Kim, DY, Kim, JB, Kim, JH, Kim, KT, Kim, MJ, Kim, YJ, Kinoshita, K, Klucar, J, Ko, BR, Kodyš, P, Korpar, S, Križan, P, Krokovny, P, Kumar, R, Kumita, T, Kuzmin, A, Kwon, YJ, Lange, JS, Lee, SH, Li, J, Li, Y, Liu, C, Liu, ZQ, Liventsev, D, Lukin, P, Matvienko, D, Miyata, H, Mizuk, R, Mohanty, GB, Moll, A, Mussa, R, Nakano, E, Nakao, M, Natkaniec, Z, Nayak, M, Nedelkovska, E, Nisar, NK, Nishida, S, Nitoh, O, Ogawa, S, Okuno, S, Olsen, SL, Pakhlov, P, Pakhlova, G, Panzenböck, E, Park, H, Park, HK, Pedlar, TK, Pestotnik, R, Petrič, M, Piilonen, LE, Ritter, M, Röhrken, M, Rostomyan, A, Sahoo, H, Saito, T, Sakai, K, Sakai, Y, Sandilya, S, Santel, D, Santelj, L, Sanuki, T, Sato, Y, Savinov, V, Schneider, O, Schnell, G, Schwanda, C, Seidl, R, Semmler, D, Senyo, K, Seon, O, Sevior, ME, Shapkin, M, Shen, CP, Shibata, TA, Shiu, JG, Shwartz, B, Simon, F, Singh, JB, Smerkol, P, Sohn, YS, Sokolov, A, Solovieva, E, Starič, M, Steder, M, Sumihama, M, Sumiyoshi, T, Tamponi, U, Tanida, K, Tatishvili, G, Teramoto, Y, Trabelsi, K, Tsuboyama, T, Uchida, M, Uehara, S, Uglov, T, Unno, Y, Urquijo, P, Usov, Y, Vahsen, SE, Van Hulse, C, Vanhoefer, P, Varner, G, Varvell, KE, Vinokurova, A, Wagner, MN, Wang, CH, Wang, MZ, Wang, P, Watanabe, M, Watanabe, Y, Won, E, Yabsley, BD, Yamaoka, J, Yamashita, Y, Yashchenko, S, Yook, Y, Yuan, CZ, Zhang, CC, Zhang, ZP, Zhilich, V, Zhulanov, V & Zupanc, A 2013, 'Evidence of a new narrow resonance decaying to χ_c1γ in B→χ_c1γK', Physical Review Letters, vol. 111, no. 3, 032001. https://doi.org/10.1103/PhysRevLett.111.032001

TY - JOUR

T1 - Evidence of a new narrow resonance decaying to χc1γ in B→χc1γK

AU - Bhardwaj, V.

AU - Miyabayashi, K.

AU - Adachi, I.

AU - Aihara, H.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Aziz, T.

AU - Bakich, A. M.

AU - Bala, A.

AU - Bhuyan, B.

AU - Bischofberger, M.

AU - Bondar, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Brodzicka, J.

AU - Browder, T. E.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Chistov, R.

AU - Cho, K.

AU - Chobanova, V.

AU - Choi, S. K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dalseno, J.

AU - Danilov, M.

AU - Doležal, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Dutta, D.

AU - Dutta, K.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Farhat, H.

AU - Fast, J. E.

AU - Ferber, T.

AU - Frey, A.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Ganguly, S.

AU - Gillard, R.

AU - Goh, Y. M.

AU - Golob, B.

AU - Haba, J.

AU - Hara, T.

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 - Itoh, R.

AU - Iwashita, T.

AU - Julius, T.

AU - Kah, D. H.

AU - Kang, J. H.

AU - Kato, E.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kiesling, C.

AU - Kim, D. Y.

AU - Kim, J. B.

AU - Kim, J. H.

AU - Kim, K. T.

AU - Kim, M. J.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Klucar, J.

AU - Ko, B. R.

AU - Kodyš, P.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kumar, R.

AU - Kumita, T.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lange, J. S.

AU - Lee, S. H.

AU - Li, J.

AU - Li, Y.

AU - Liu, C.

AU - Liu, Z. Q.

AU - Liventsev, D.

AU - Lukin, P.

AU - Matvienko, D.

AU - Miyata, H.

AU - Mizuk, R.

AU - Mohanty, G. B.

AU - Moll, A.

AU - Mussa, R.

AU - Nakano, E.

AU - Nakao, M.

AU - Natkaniec, Z.

AU - Nayak, M.

AU - Nedelkovska, E.

AU - Nisar, N. K.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Panzenböck, E.

AU - Park, H.

AU - Park, H. K.

AU - Pedlar, T. K.

AU - Pestotnik, R.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Ritter, M.

AU - Röhrken, M.

AU - Rostomyan, A.

AU - Sahoo, H.

AU - Saito, T.

AU - Sakai, K.

AU - Sakai, Y.

AU - Sandilya, S.

AU - Santel, D.

AU - Santelj, L.

AU - Sanuki, T.

AU - Sato, Y.

AU - Savinov, V.

AU - Schneider, O.

AU - Schnell, G.

AU - Schwanda, C.

AU - Seidl, R.

AU - Semmler, D.

AU - Senyo, K.

AU - Seon, O.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shibata, T. A.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Simon, F.

AU - Singh, J. B.

AU - Smerkol, P.

AU - Sohn, Y. S.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Starič, M.

AU - Steder, M.

AU - Sumihama, M.

AU - Sumiyoshi, T.

AU - Tamponi, U.

AU - Tanida, K.

AU - Tatishvili, G.

AU - Teramoto, Y.

AU - Trabelsi, K.

AU - Tsuboyama, T.

AU - Uchida, M.

AU - Uehara, S.

AU - Uglov, T.

AU - Unno, Y.

AU - Urquijo, P.

AU - Usov, Y.

AU - Vahsen, S. E.

AU - Van Hulse, C.

AU - Vanhoefer, P.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vinokurova, A.

AU - Wagner, M. N.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Wang, P.

AU - Watanabe, M.

AU - Watanabe, Y.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamaoka, J.

AU - Yamashita, Y.

AU - Yashchenko, S.

AU - Yook, Y.

AU - Yuan, C. Z.

AU - Zhang, C. C.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zupanc, A.

PY - 2013/7/16

Y1 - 2013/7/16

N2 - We report measurements of B→χc1γK and χc2γK decays using 772×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Evidence of a new resonance in the χc1γ final state is found with a statistical significance of 3.8σ. This state has a mass of 3823.1±1.8(stat)±0.7(syst) MeV/c2, a value that is consistent with theoretical expectations for the previously unseen 1D23 cc̄ meson. We find no other narrow resonance and set upper limits on the branching fractions of the X(3872)→χc1γ and χc2γ decays.

AB - We report measurements of B→χc1γK and χc2γK decays using 772×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Evidence of a new resonance in the χc1γ final state is found with a statistical significance of 3.8σ. This state has a mass of 3823.1±1.8(stat)±0.7(syst) MeV/c2, a value that is consistent with theoretical expectations for the previously unseen 1D23 cc̄ meson. We find no other narrow resonance and set upper limits on the branching fractions of the X(3872)→χc1γ and χc2γ decays.

UR - http://www.scopus.com/inward/record.url?scp=84880569055&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.111.032001

DO - 10.1103/PhysRevLett.111.032001

M3 - Article

AN - SCOPUS:84880569055

SN - 0031-9007

VL - 111

JO - Physical Review Letters

JF - Physical Review Letters

IS - 3

M1 - 032001

ER -

Evidence of a new narrow resonance decaying to χ_c1γ in B→χ_c1γK

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