Study of the B→X(3872)(→D*0D̄0)K decay

T. Aushev; N. Zwahlen; I. Adachi; H. Aihara; A. M. Bakich; V. Balagura; A. Bay; K. Belous; V. Bhardwaj; M. Bischofberger; A. Bondar; A. Bozek; J. Brodzicka; T. E. Browder; Y. Chao; A. Chen; P. Chen; B. G. Cheon; C. C. Chiang; R. Chistov; I. S. Cho; S. K. Choi; Y. Choi; J. Dalseno; M. Danilov; A. Drutskoy; S. Eidelman; N. Gabyshev; P. Goldenzweig; H. Ha; J. Haba; B. Y. Han; H. Hayashii; Y. Hoshi; W. S. Hou; H. J. Hyun; T. Iijima; K. Inami; R. Itoh; M. Iwabuchi; M. Iwasaki; Y. Iwasaki; N. J. Joshi; T. Julius; D. H. Kah; J. H. Kang; P. Kapusta; T. Kawasaki; H. J. Kim; H. O. Kim; J. H. Kim; Y. I. Kim; Y. J. Kim; B. R. Ko; S. Korpar; P. Križan; P. Krokovny; T. Kuhr; R. Kumar; Y. J. Kwon; J. S. Lange; S. H. Lee; J. Li; C. Liu; D. Liventsev; R. Louvot; A. Matyja; S. McOnie; T. Medvedeva; K. Miyabayashi; H. Miyata; Y. Miyazaki; R. Mizuk; E. Nakano; M. Nakao; Z. Natkaniec; S. Nishida; K. Nishimura; O. Nitoh; S. Ogawa; T. Ohshima; S. Okuno; S. L. Olsen; P. Pakhlov; G. Pakhlova; H. Palka; C. W. Park; H. Park; H. K. Park; R. Pestotnik; M. Petrič; L. E. Piilonen; S. Ryu; H. Sahoo; K. Sakai; Y. Sakai; O. Schneider; C. Schwanda; K. Senyo; M. Shapkin; C. P. Shen; J. G. Shiu; B. Shwartz; J. B. Singh; P. Smerkol; A. Sokolov; E. Solovieva; M. Starič; T. Sumiyoshi; Y. Teramoto; I. Tikhomirov; K. Trabelsi; S. Uehara; T. Uglov; Y. Unno; S. Uno; Y. Usov; G. Varner; K. Vervink; C. H. Wang; P. Wang; Y. Watanabe; R. Wedd; J. Wicht; E. Won; B. D. Yabsley; Y. Yamashita; M. Yamauchi; C. Z. Yuan; Z. P. Zhang; V. Zhulanov; T. Zivko; A. Zupanc; O. Zyukova

doi:10.1103/PhysRevD.81.031103

Study of the B→X(3872)(→D*0D^̄0)K decay

T. Aushev, N. Zwahlen, I. Adachi, H. Aihara, A. M. Bakich, V. Balagura, A. Bay, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bondar, A. Bozek, J. Brodzicka, T. E. Browder, Y. Chao, A. Chen, P. Chen, B. G. Cheon, C. C. Chiang, R. ChistovI. S. Cho, S. K. Choi, Y. Choi, J. Dalseno, M. Danilov, A. Drutskoy, S. Eidelman, N. Gabyshev, P. Goldenzweig, H. Ha, J. Haba, B. Y. Han, H. Hayashii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, N. J. Joshi, T. Julius, D. H. Kah, J. H. Kang, P. Kapusta, T. Kawasaki, H. J. Kim, H. O. Kim, J. H. Kim, Y. I. Kim, Y. J. Kim, B. R. Ko, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, R. Kumar, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, C. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petrič, L. E. Piilonen, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. Shapkin, C. P. Shen, J. G. Shiu, B. Shwartz, J. B. Singh, P. Smerkol, A. Sokolov, E. Solovieva, M. Starič, T. Sumiyoshi, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, C. H. Wang, P. Wang, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Z. P. Zhang, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

Department of Physics

Research output: Contribution to journal › Article › peer-review

80 Citations (Scopus)

Abstract

We present a study of B→X(3872)K with X(3872) decaying to D*0D^̄0 using a sample of 657×106 BB̄ pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e⁺e^- collider. Both D*0→D0γ and D*0→D0π0 decay modes are used. We find a peak of 50.1-11.1+14.8 events with a mass of (3872.9-0.4-0.5+0.6+0.4)MeV/c2, a width of (3.9-1.4-1.1+2.8+0.2)MeV/c2 and a product branching fraction B(B→X(3872)K)×B(X(3872)→D*0D^̄0)=(0. 80±0.20±0.10)×10^-4, where the first errors are statistical and the second ones are systematic. The significance of the signal is 6.4σ. The difference between the fitted mass and the D*0D̄0 threshold is calculated to be (1.1-0.4-0.3+0.6+0.1)MeV/c2. We also obtain an upper limit on the product of branching fractions B(B→Y(3940)K) ×B(Y(3940)→D*0D^̄0) of 0.67×10 ^-4 at 90% CL.

Original language	English
Article number	031103
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	81
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.81.031103
Publication status	Published - 2010 Feb 22

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.81.031103

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Aushev, T., Zwahlen, N., Adachi, I., Aihara, H., Bakich, A. M., Balagura, V., Bay, A., Belous, K., Bhardwaj, V., Bischofberger, M., Bondar, A., Bozek, A., Brodzicka, J., Browder, T. E., Chao, Y., Chen, A., Chen, P., Cheon, B. G., Chiang, C. C., ... Zyukova, O. (2010). Study of the B→X(3872)(→D*0D^̄0)K decay. Physical Review D - Particles, Fields, Gravitation and Cosmology, 81(3), [031103]. https://doi.org/10.1103/PhysRevD.81.031103

Aushev, T. ; Zwahlen, N. ; Adachi, I. ; Aihara, H. ; Bakich, A. M. ; Balagura, V. ; Bay, A. ; Belous, K. ; Bhardwaj, V. ; Bischofberger, M. ; Bondar, A. ; Bozek, A. ; Brodzicka, J. ; Browder, T. E. ; Chao, Y. ; Chen, A. ; Chen, P. ; Cheon, B. G. ; Chiang, C. C. ; Chistov, R. ; Cho, I. S. ; Choi, S. K. ; Choi, Y. ; Dalseno, J. ; Danilov, M. ; Drutskoy, A. ; Eidelman, S. ; Gabyshev, N. ; Goldenzweig, P. ; Ha, H. ; Haba, J. ; Han, B. Y. ; Hayashii, H. ; Hoshi, Y. ; Hou, W. S. ; Hyun, H. J. ; Iijima, T. ; Inami, K. ; Itoh, R. ; Iwabuchi, M. ; Iwasaki, M. ; Iwasaki, Y. ; Joshi, N. J. ; Julius, T. ; Kah, D. H. ; Kang, J. H. ; Kapusta, P. ; Kawasaki, T. ; Kim, H. J. ; Kim, H. O. ; Kim, J. H. ; Kim, Y. I. ; Kim, Y. J. ; Ko, B. R. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kuhr, T. ; Kumar, R. ; Kwon, Y. J. ; Lange, J. S. ; Lee, S. H. ; Li, J. ; Liu, C. ; Liventsev, D. ; Louvot, R. ; Matyja, A. ; McOnie, S. ; Medvedeva, T. ; Miyabayashi, K. ; Miyata, H. ; Miyazaki, Y. ; Mizuk, R. ; Nakano, E. ; Nakao, M. ; Natkaniec, Z. ; Nishida, S. ; Nishimura, K. ; Nitoh, O. ; Ogawa, S. ; Ohshima, T. ; Okuno, S. ; Olsen, S. L. ; Pakhlov, P. ; Pakhlova, G. ; Palka, H. ; Park, C. W. ; Park, H. ; Park, H. K. ; Pestotnik, R. ; Petrič, M. ; Piilonen, L. E. ; Ryu, S. ; Sahoo, H. ; Sakai, K. ; Sakai, Y. ; Schneider, O. ; Schwanda, C. ; Senyo, K. ; Shapkin, M. ; Shen, C. P. ; Shiu, J. G. ; Shwartz, B. ; Singh, J. B. ; Smerkol, P. ; Sokolov, A. ; Solovieva, E. ; Starič, M. ; Sumiyoshi, T. ; Teramoto, Y. ; Tikhomirov, I. ; Trabelsi, K. ; Uehara, S. ; Uglov, T. ; Unno, Y. ; Uno, S. ; Usov, Y. ; Varner, G. ; Vervink, K. ; Wang, C. H. ; Wang, P. ; Watanabe, Y. ; Wedd, R. ; Wicht, J. ; Won, E. ; Yabsley, B. D. ; Yamashita, Y. ; Yamauchi, M. ; Yuan, C. Z. ; Zhang, Z. P. ; Zhulanov, V. ; Zivko, T. ; Zupanc, A. ; Zyukova, O. / Study of the B→X(3872)(→D*0D^̄0)K decay. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2010 ; Vol. 81, No. 3.

@article{1c19f7fe14634d04b7db6e0ec6187a55,

title = "Study of the B→X(3872)(→D*0{\=D}0)K decay",

abstract = "We present a study of B→X(3872)K with X(3872) decaying to D*0{\=D}0 using a sample of 657×106 B{\=B} pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Both D*0→D0γ and D*0→D0π0 decay modes are used. We find a peak of 50.1-11.1+14.8 events with a mass of (3872.9-0.4-0.5+0.6+0.4)MeV/c2, a width of (3.9-1.4-1.1+2.8+0.2)MeV/c2 and a product branching fraction B(B→X(3872)K)×B(X(3872)→D*0{\=D}0)=(0. 80±0.20±0.10)×10-4, where the first errors are statistical and the second ones are systematic. The significance of the signal is 6.4σ. The difference between the fitted mass and the D*0{\=D}0 threshold is calculated to be (1.1-0.4-0.3+0.6+0.1)MeV/c2. We also obtain an upper limit on the product of branching fractions B(B→Y(3940)K) ×B(Y(3940)→D*0{\=D}0) of 0.67×10 -4 at 90% CL.",

author = "T. Aushev and N. Zwahlen and I. Adachi and H. Aihara and Bakich, {A. M.} and V. Balagura and A. Bay and K. Belous and V. Bhardwaj and M. Bischofberger and A. Bondar and A. Bozek and J. Brodzicka and Browder, {T. E.} and Y. Chao and A. Chen and P. Chen and Cheon, {B. G.} and Chiang, {C. C.} and R. Chistov and Cho, {I. S.} and Choi, {S. K.} and Y. Choi and J. Dalseno and M. Danilov and A. Drutskoy and S. Eidelman and N. Gabyshev and P. Goldenzweig and H. Ha and J. Haba and Han, {B. Y.} and H. Hayashii and Y. Hoshi and Hou, {W. S.} and Hyun, {H. J.} and T. Iijima and K. Inami and R. Itoh and M. Iwabuchi and M. Iwasaki and Y. Iwasaki and Joshi, {N. J.} and T. Julius and Kah, {D. H.} and Kang, {J. H.} and P. Kapusta and T. Kawasaki and Kim, {H. J.} and Kim, {H. O.} and Kim, {J. H.} and Kim, {Y. I.} and Kim, {Y. J.} and Ko, {B. R.} and S. Korpar and P. Kri{\v z}an and P. Krokovny and T. Kuhr and R. Kumar and Kwon, {Y. J.} and Lange, {J. S.} and Lee, {S. H.} and J. Li and C. Liu and D. Liventsev and R. Louvot and A. Matyja and S. McOnie and T. Medvedeva and K. Miyabayashi and H. Miyata and Y. Miyazaki and R. Mizuk and E. Nakano and M. Nakao and Z. Natkaniec and S. Nishida and K. Nishimura and O. Nitoh and S. Ogawa and T. Ohshima and S. Okuno and Olsen, {S. L.} and P. Pakhlov and G. Pakhlova and H. Palka and Park, {C. W.} and H. Park and Park, {H. K.} and R. Pestotnik and M. Petri{\v c} and Piilonen, {L. E.} and S. Ryu and H. Sahoo and K. Sakai and Y. Sakai and O. Schneider and C. Schwanda and K. Senyo and M. Shapkin and Shen, {C. P.} and Shiu, {J. G.} and B. Shwartz and Singh, {J. B.} and P. Smerkol and A. Sokolov and E. Solovieva and M. Stari{\v c} and T. Sumiyoshi and Y. Teramoto and I. Tikhomirov and K. Trabelsi and S. Uehara and T. Uglov and Y. Unno and S. Uno and Y. Usov and G. Varner and K. Vervink and Wang, {C. H.} and P. Wang and Y. Watanabe and R. Wedd and J. Wicht and E. Won and Yabsley, {B. D.} and Y. Yamashita and M. Yamauchi and Yuan, {C. Z.} and Zhang, {Z. P.} and V. Zhulanov and T. Zivko and A. Zupanc and O. Zyukova",

year = "2010",

month = feb,

day = "22",

doi = "10.1103/PhysRevD.81.031103",

language = "English",

volume = "81",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

number = "3",

}

Aushev, T, Zwahlen, N, Adachi, I, Aihara, H, Bakich, AM, Balagura, V, Bay, A, Belous, K, Bhardwaj, V, Bischofberger, M, Bondar, A, Bozek, A, Brodzicka, J, Browder, TE, Chao, Y, Chen, A, Chen, P, Cheon, BG, Chiang, CC, Chistov, R, Cho, IS, Choi, SK, Choi, Y, Dalseno, J, Danilov, M, Drutskoy, A, Eidelman, S, Gabyshev, N, Goldenzweig, P, Ha, H, Haba, J, Han, BY, Hayashii, H, Hoshi, Y, Hou, WS, Hyun, HJ, Iijima, T, Inami, K, Itoh, R, Iwabuchi, M, Iwasaki, M, Iwasaki, Y, Joshi, NJ, Julius, T, Kah, DH, Kang, JH, Kapusta, P, Kawasaki, T, Kim, HJ, Kim, HO, Kim, JH, Kim, YI, Kim, YJ, Ko, BR, Korpar, S, Križan, P, Krokovny, P, Kuhr, T, Kumar, R, Kwon, YJ, Lange, JS, Lee, SH, Li, J, Liu, C, Liventsev, D, Louvot, R, Matyja, A, McOnie, S, Medvedeva, T, Miyabayashi, K, Miyata, H, Miyazaki, Y, Mizuk, R, Nakano, E, Nakao, M, Natkaniec, Z, Nishida, S, Nishimura, K, Nitoh, O, Ogawa, S, Ohshima, T, Okuno, S, Olsen, SL, Pakhlov, P, Pakhlova, G, Palka, H, Park, CW, Park, H, Park, HK, Pestotnik, R, Petrič, M, Piilonen, LE, Ryu, S, Sahoo, H, Sakai, K, Sakai, Y, Schneider, O, Schwanda, C, Senyo, K, Shapkin, M, Shen, CP, Shiu, JG, Shwartz, B, Singh, JB, Smerkol, P, Sokolov, A, Solovieva, E, Starič, M, Sumiyoshi, T, Teramoto, Y, Tikhomirov, I, Trabelsi, K, Uehara, S, Uglov, T, Unno, Y, Uno, S, Usov, Y, Varner, G, Vervink, K, Wang, CH, Wang, P, Watanabe, Y, Wedd, R, Wicht, J, Won, E, Yabsley, BD, Yamashita, Y, Yamauchi, M, Yuan, CZ, Zhang, ZP, Zhulanov, V, Zivko, T, Zupanc, A & Zyukova, O 2010, 'Study of the B→X(3872)(→D*0D^̄0)K decay', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 81, no. 3, 031103. https://doi.org/10.1103/PhysRevD.81.031103

Study of the B→X(3872)(→D*0D^̄0)K decay. / Aushev, T.; Zwahlen, N.; Adachi, I.; Aihara, H.; Bakich, A. M.; Balagura, V.; Bay, A.; Belous, K.; Bhardwaj, V.; Bischofberger, M.; Bondar, A.; Bozek, A.; Brodzicka, J.; Browder, T. E.; Chao, Y.; Chen, A.; Chen, P.; Cheon, B. G.; Chiang, C. C.; Chistov, R.; Cho, I. S.; Choi, S. K.; Choi, Y.; Dalseno, J.; Danilov, M.; Drutskoy, A.; Eidelman, S.; Gabyshev, N.; Goldenzweig, P.; Ha, H.; Haba, J.; Han, B. Y.; Hayashii, H.; Hoshi, Y.; Hou, W. S.; Hyun, H. J.; Iijima, T.; Inami, K.; Itoh, R.; Iwabuchi, M.; Iwasaki, M.; Iwasaki, Y.; Joshi, N. J.; Julius, T.; Kah, D. H.; Kang, J. H.; Kapusta, P.; Kawasaki, T.; Kim, H. J.; Kim, H. O.; Kim, J. H.; Kim, Y. I.; Kim, Y. J.; Ko, B. R.; Korpar, S.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumar, R.; Kwon, Y. J.; Lange, J. S.; Lee, S. H.; Li, J.; Liu, C.; Liventsev, D.; Louvot, R.; Matyja, A.; McOnie, S.; Medvedeva, T.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Pakhlov, P.; Pakhlova, G.; Palka, H.; Park, C. W.; Park, H.; Park, H. K.; Pestotnik, R.; Petrič, M.; Piilonen, L. E.; Ryu, S.; Sahoo, H.; Sakai, K.; Sakai, Y.; Schneider, O.; Schwanda, C.; Senyo, K.; Shapkin, M.; Shen, C. P.; Shiu, J. G.; Shwartz, B.; Singh, J. B.; Smerkol, P.; Sokolov, A.; Solovieva, E.; Starič, M.; Sumiyoshi, T.; Teramoto, Y.; Tikhomirov, I.; Trabelsi, K.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Usov, Y.; Varner, G.; Vervink, K.; Wang, C. H.; Wang, P.; Watanabe, Y.; Wedd, R.; Wicht, J.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yamauchi, M.; Yuan, C. Z.; Zhang, Z. P.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zyukova, O.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 81, No. 3, 031103, 22.02.2010.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Study of the B→X(3872)(→D*0D̄0)K decay

AU - Aushev, T.

AU - Zwahlen, N.

AU - Adachi, I.

AU - Aihara, H.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Bay, A.

AU - Belous, K.

AU - Bhardwaj, V.

AU - Bischofberger, M.

AU - Bondar, A.

AU - Bozek, A.

AU - Brodzicka, J.

AU - Browder, T. E.

AU - Chao, Y.

AU - Chen, A.

AU - Chen, P.

AU - Cheon, B. G.

AU - Chiang, C. C.

AU - Chistov, R.

AU - Cho, I. S.

AU - Choi, S. K.

AU - Choi, Y.

AU - Dalseno, J.

AU - Danilov, M.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Gabyshev, N.

AU - Goldenzweig, P.

AU - Ha, H.

AU - Haba, J.

AU - Han, B. Y.

AU - Hayashii, H.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Itoh, R.

AU - Iwabuchi, M.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Joshi, N. J.

AU - Julius, T.

AU - Kah, D. H.

AU - Kang, J. H.

AU - Kapusta, P.

AU - Kawasaki, T.

AU - Kim, H. J.

AU - Kim, H. O.

AU - Kim, J. H.

AU - Kim, Y. I.

AU - Kim, Y. J.

AU - Ko, B. R.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kumar, R.

AU - Kwon, Y. J.

AU - Lange, J. S.

AU - Lee, S. H.

AU - Li, J.

AU - Liu, C.

AU - Liventsev, D.

AU - Louvot, R.

AU - Matyja, A.

AU - McOnie, S.

AU - Medvedeva, T.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mizuk, R.

AU - Nakano, E.

AU - Nakao, M.

AU - Natkaniec, Z.

AU - Nishida, S.

AU - Nishimura, K.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Palka, H.

AU - Park, C. W.

AU - Park, H.

AU - Park, H. K.

AU - Pestotnik, R.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Ryu, S.

AU - Sahoo, H.

AU - Sakai, K.

AU - Sakai, Y.

AU - Schneider, O.

AU - Schwanda, C.

AU - Senyo, K.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Singh, J. B.

AU - Smerkol, P.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Teramoto, Y.

AU - Tikhomirov, I.

AU - Trabelsi, K.

AU - Uehara, S.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Usov, Y.

AU - Varner, G.

AU - Vervink, K.

AU - Wang, C. H.

AU - Wang, P.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Wicht, J.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Yuan, C. Z.

AU - Zhang, Z. P.

AU - Zhulanov, V.

AU - Zivko, T.

AU - Zupanc, A.

AU - Zyukova, O.

PY - 2010/2/22

Y1 - 2010/2/22

N2 - We present a study of B→X(3872)K with X(3872) decaying to D*0D̄0 using a sample of 657×106 BB̄ pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Both D*0→D0γ and D*0→D0π0 decay modes are used. We find a peak of 50.1-11.1+14.8 events with a mass of (3872.9-0.4-0.5+0.6+0.4)MeV/c2, a width of (3.9-1.4-1.1+2.8+0.2)MeV/c2 and a product branching fraction B(B→X(3872)K)×B(X(3872)→D*0D̄0)=(0. 80±0.20±0.10)×10-4, where the first errors are statistical and the second ones are systematic. The significance of the signal is 6.4σ. The difference between the fitted mass and the D*0D̄0 threshold is calculated to be (1.1-0.4-0.3+0.6+0.1)MeV/c2. We also obtain an upper limit on the product of branching fractions B(B→Y(3940)K) ×B(Y(3940)→D*0D̄0) of 0.67×10 -4 at 90% CL.

AB - We present a study of B→X(3872)K with X(3872) decaying to D*0D̄0 using a sample of 657×106 BB̄ pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Both D*0→D0γ and D*0→D0π0 decay modes are used. We find a peak of 50.1-11.1+14.8 events with a mass of (3872.9-0.4-0.5+0.6+0.4)MeV/c2, a width of (3.9-1.4-1.1+2.8+0.2)MeV/c2 and a product branching fraction B(B→X(3872)K)×B(X(3872)→D*0D̄0)=(0. 80±0.20±0.10)×10-4, where the first errors are statistical and the second ones are systematic. The significance of the signal is 6.4σ. The difference between the fitted mass and the D*0D̄0 threshold is calculated to be (1.1-0.4-0.3+0.6+0.1)MeV/c2. We also obtain an upper limit on the product of branching fractions B(B→Y(3940)K) ×B(Y(3940)→D*0D̄0) of 0.67×10 -4 at 90% CL.

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U2 - 10.1103/PhysRevD.81.031103

DO - 10.1103/PhysRevD.81.031103

M3 - Article

AN - SCOPUS:77949329470

VL - 81

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 3

M1 - 031103