Measurement of the decay Bs0→Ds-π+ and evidence for Bs0→Ds K± in e+e- annihilation at s 10.87GeV

R. Louvot; J. Wicht; O. Schneider; I. Adachi; H. Aihara; K. Arinstein; V. Aulchenko; T. Aushev; A. M. Bakich; V. Balagura; A. Bay; V. Bhardwaj; U. Bitenc; A. Bondar; A. Bozek; M. Bračko; T. E. Browder; A. Chen; B. G. Cheon; R. Chistov; I. S. Cho; Y. Choi; J. Dalseno; M. Danilov; M. Dash; A. Drutskoy; W. Dungel; S. Eidelman; N. Gabyshev; P. Goldenzweig; B. Golob; H. Ha; J. Haba; K. Hayasaka; H. Hayashii; M. Hazumi; Y. Hoshi; W. S. Hou; H. J. Hyun; T. Iijima; K. Inami; A. Ishikawa; H. Ishino; R. Itoh; M. Iwasaki; N. J. Joshi; D. H. Kah; J. H. Kang; N. Katayama; H. Kawai; T. Kawasaki; H. Kichimi; S. K. Kim; Y. I. Kim; Y. J. Kim; K. Kinoshita; S. Korpar; P. Krian; P. Krokovny; R. Kumar; A. Kuzmin; Y. J. Kwon; S. H. Kyeong; J. S. Lange; J. S. Lee; M. J. Lee; S. E. Lee; T. Lesiak; J. Li; A. Limosani; S. W. Lin; D. Liventsev; F. Mandl; A. Matyja; S. McOnie; T. Medvedeva; K. Miyabayashi; H. Miyake; H. Miyata; Y. Miyazaki; R. Mizuk; T. Mori; E. Nakano; M. Nakao; S. Nishida; O. Nitoh; S. Ogawa; T. Ohshima; S. Okuno; H. Ozaki; G. Pakhlova; C. W. Park; H. K. Park; R. Pestotnik; L. E. Piilonen; H. Sahoo; Y. Sakai; J. Schümann; A. J. Schwartz; A. Sekiya; K. Senyo; M. E. Sevior; M. Shapkin; J. G. Shiu; J. B. Singh; A. Somov; S. Stanič; M. Starič; K. Sumisawa; T. Sumiyoshi; M. Tanaka; G. N. Taylor; Y. Teramoto; I. Tikhomirov; K. Trabelsi; S. Uehara; T. Uglov; Y. Unno; S. Uno; Y. Usov; G. Varner; K. Vervink; C. C. Wang; C. H. Wang; P. Wang; X. L. Wang; Y. Watanabe; R. Wedd; E. Won; B. D. Yabsley; Y. Yamashita; M. Yamauchi; Z. P. Zhang; V. Zhilich; V. Zhulanov; T. Zivko; A. Zupanc; N. Zwahlen; O. Zyukova

doi:10.1103/PhysRevLett.102.021801

Measurement of the decay Bs0→Ds-π+ and evidence for Bs0→Ds K± in e+e- annihilation at s 10.87GeV

R. Louvot, J. Wicht, O. Schneider, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, A. Bay, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, A. Chen, B. G. Cheon, R. ChistovI. S. Cho, Y. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, W. Dungel, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, N. J. Joshi, D. H. Kah, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krian, P. Krokovny, R. Kumar, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, T. Mori, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, G. Pakhlova, C. W. Park, H. K. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, J. Schümann, A. J. Schwartz, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, J. G. Shiu, J. B. Singh, A. Somov, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, C. C. Wang, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, N. Zwahlen, O. Zyukova

Department of Physics

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Abstract

We have studied Bs0→Ds-π+ and Bs0→Ds K± decays using 23.6fb-1 of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e+e- collider. This highly pure Bs0→Ds-π+ sample is used to measure the branching fraction, B(Bs0→Ds-π+)=[3.67-0.33+0.35(stat)-0. 42+0.43(syst)±0.49(fs)]×10-3 (fs=NBs(*)B̄s(*)/ Nbb̄) and the fractions of Bs0 event types at the Υ(5S) energy, in particular NBs*B̄s*/NBs(*)B̄s(*)=(90.1-4.0+3. 8±0.2)%. We also determine the masses M(Bs0)=(5364.4±1.3±0. 7)MeV/c2 and M(Bs*)=(5416.4±0.4±0.5)MeV/c2. In addition, we observe Bs0→Ds K± decays with a significance of 3.5σ and measure B(Bs0→Ds K±)=[2.4-1.0+1.2(stat)±0.3(syst)±0. 3(fs)]×10-4.

Original language	English
Article number	021801
Journal	Physical review letters
Volume	102
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.102.021801
Publication status	Published - 2009 Jan 12

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.102.021801

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Louvot, R., Wicht, J., Schneider, O., Adachi, I., Aihara, H., Arinstein, K., Aulchenko, V., Aushev, T., Bakich, A. M., Balagura, V., Bay, A., Bhardwaj, V., Bitenc, U., Bondar, A., Bozek, A., Bračko, M., Browder, T. E., Chen, A., Cheon, B. G., ... Zyukova, O. (2009). Measurement of the decay Bs0→Ds-π+ and evidence for Bs0→Ds K± in e+e- annihilation at s 10.87GeV. Physical review letters, 102(2), [021801]. https://doi.org/10.1103/PhysRevLett.102.021801

Louvot, R, Wicht, J, Schneider, O, Adachi, I, Aihara, H, Arinstein, K, Aulchenko, V, Aushev, T, Bakich, AM, Balagura, V, Bay, A, Bhardwaj, V, Bitenc, U, Bondar, A, Bozek, A, Bračko, M, Browder, TE, Chen, A, Cheon, BG, Chistov, R, Cho, IS, Choi, Y, Dalseno, J, Danilov, M, Dash, M, Drutskoy, A, Dungel, W, Eidelman, S, Gabyshev, N, Goldenzweig, P, Golob, B, Ha, H, Haba, J, Hayasaka, K, Hayashii, H, Hazumi, M, Hoshi, Y, Hou, WS, Hyun, HJ, Iijima, T, Inami, K, Ishikawa, A, Ishino, H, Itoh, R, Iwasaki, M, Joshi, NJ, Kah, DH, Kang, JH, Katayama, N, Kawai, H, Kawasaki, T, Kichimi, H, Kim, SK, Kim, YI, Kim, YJ, Kinoshita, K, Korpar, S, Krian, P, Krokovny, P, Kumar, R, Kuzmin, A, Kwon, YJ, Kyeong, SH, Lange, JS, Lee, JS, Lee, MJ, Lee, SE, Lesiak, T, Li, J, Limosani, A, Lin, SW, Liventsev, D, Mandl, F, Matyja, A, McOnie, S, Medvedeva, T, Miyabayashi, K, Miyake, H, Miyata, H, Miyazaki, Y, Mizuk, R, Mori, T, Nakano, E, Nakao, M, Nishida, S, Nitoh, O, Ogawa, S, Ohshima, T, Okuno, S, Ozaki, H, Pakhlova, G, Park, CW, Park, HK, Pestotnik, R, Piilonen, LE, Sahoo, H, Sakai, Y, Schümann, J, Schwartz, AJ, Sekiya, A, Senyo, K, Sevior, ME, Shapkin, M, Shiu, JG, Singh, JB, Somov, A, Stanič, S, Starič, M, Sumisawa, K, Sumiyoshi, T, Tanaka, M, Taylor, GN, Teramoto, Y, Tikhomirov, I, Trabelsi, K, Uehara, S, Uglov, T, Unno, Y, Uno, S, Usov, Y, Varner, G, Vervink, K, Wang, CC, Wang, CH, Wang, P, Wang, XL, Watanabe, Y, Wedd, R, Won, E, Yabsley, BD, Yamashita, Y, Yamauchi, M, Zhang, ZP, Zhilich, V, Zhulanov, V, Zivko, T, Zupanc, A, Zwahlen, N & Zyukova, O 2009, 'Measurement of the decay Bs0→Ds-π+ and evidence for Bs0→Ds K± in e+e- annihilation at s 10.87GeV', Physical review letters, vol. 102, no. 2, 021801. https://doi.org/10.1103/PhysRevLett.102.021801

@article{70954fde179d4fd0b7482d5976270c05,

title = "Measurement of the decay Bs0→Ds-π+ and evidence for Bs0→Ds K± in e+e- annihilation at s 10.87GeV",

abstract = "We have studied Bs0→Ds-π+ and Bs0→Ds K± decays using 23.6fb-1 of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e+e- collider. This highly pure Bs0→Ds-π+ sample is used to measure the branching fraction, B(Bs0→Ds-π+)=[3.67-0.33+0.35(stat)-0. 42+0.43(syst)±0.49(fs)]×10-3 (fs=NBs(*){\=B}s(*)/ Nb{\=b}) and the fractions of Bs0 event types at the Υ(5S) energy, in particular NBs*{\=B}s*/NBs(*){\=B}s(*)=(90.1-4.0+3. 8±0.2)%. We also determine the masses M(Bs0)=(5364.4±1.3±0. 7)MeV/c2 and M(Bs*)=(5416.4±0.4±0.5)MeV/c2. In addition, we observe Bs0→Ds K± decays with a significance of 3.5σ and measure B(Bs0→Ds K±)=[2.4-1.0+1.2(stat)±0.3(syst)±0. 3(fs)]×10-4.",

author = "R. Louvot and J. Wicht and O. Schneider and I. Adachi and H. Aihara and K. Arinstein and V. Aulchenko and T. Aushev and Bakich, {A. M.} and V. Balagura and A. Bay and V. Bhardwaj and U. Bitenc and A. Bondar and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and A. Chen and Cheon, {B. G.} and R. Chistov and Cho, {I. S.} and Y. Choi and J. Dalseno and M. Danilov and M. Dash and A. Drutskoy and W. Dungel and S. Eidelman and N. Gabyshev and P. Goldenzweig and B. Golob and H. Ha and J. Haba and K. Hayasaka and H. Hayashii and M. Hazumi and Y. Hoshi and Hou, {W. S.} and Hyun, {H. J.} and T. Iijima and K. Inami and A. Ishikawa and H. Ishino and R. Itoh and M. Iwasaki and Joshi, {N. J.} and Kah, {D. H.} and Kang, {J. H.} and N. Katayama and H. Kawai and T. Kawasaki and H. Kichimi and Kim, {S. K.} and Kim, {Y. I.} and Kim, {Y. J.} and K. Kinoshita and S. Korpar and P. Krian and P. Krokovny and R. Kumar and A. Kuzmin and Kwon, {Y. J.} and Kyeong, {S. H.} and Lange, {J. S.} and Lee, {J. S.} and Lee, {M. J.} and Lee, {S. E.} and T. Lesiak and J. Li and A. Limosani and Lin, {S. W.} and D. Liventsev and F. Mandl and A. Matyja and S. McOnie and T. Medvedeva and K. Miyabayashi and H. Miyake and H. Miyata and Y. Miyazaki and R. Mizuk and T. Mori and E. Nakano and M. Nakao and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and S. Okuno and H. Ozaki and G. Pakhlova and Park, {C. W.} and Park, {H. K.} and R. Pestotnik and Piilonen, {L. E.} and H. Sahoo and Y. Sakai and J. Sch{\"u}mann and Schwartz, {A. J.} and A. Sekiya and K. Senyo and Sevior, {M. E.} and M. Shapkin and Shiu, {J. G.} and Singh, {J. B.} and A. Somov and S. Stani{\v c} and M. Stari{\v c} and K. Sumisawa and T. Sumiyoshi and M. Tanaka and Taylor, {G. N.} 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. C.} and Wang, {C. H.} and P. Wang and Wang, {X. L.} and Y. Watanabe and R. Wedd and E. Won and Yabsley, {B. D.} and Y. Yamashita and M. Yamauchi and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and T. Zivko and A. Zupanc and N. Zwahlen and O. Zyukova",

year = "2009",

month = jan,

day = "12",

doi = "10.1103/PhysRevLett.102.021801",

language = "English",

volume = "102",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Measurement of the decay Bs0→Ds-π+ and evidence for Bs0→Ds K± in e+e- annihilation at s 10.87GeV

AU - Louvot, R.

AU - Wicht, J.

AU - Schneider, O.

AU - Adachi, I.

AU - Aihara, H.

AU - Arinstein, K.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Bay, A.

AU - Bhardwaj, V.

AU - Bitenc, U.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Cho, I. S.

AU - Choi, Y.

AU - Dalseno, J.

AU - Danilov, M.

AU - Dash, M.

AU - Drutskoy, A.

AU - Dungel, W.

AU - Eidelman, S.

AU - Gabyshev, N.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Ha, H.

AU - Haba, J.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Ishikawa, A.

AU - Ishino, H.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Joshi, N. J.

AU - Kah, D. H.

AU - Kang, J. H.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, S. K.

AU - Kim, Y. I.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Korpar, S.

AU - Krian, P.

AU - Krokovny, P.

AU - Kumar, R.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Kyeong, S. H.

AU - Lange, J. S.

AU - Lee, J. S.

AU - Lee, M. J.

AU - Lee, S. E.

AU - Lesiak, T.

AU - Li, J.

AU - Limosani, A.

AU - Lin, S. W.

AU - Liventsev, D.

AU - Mandl, F.

AU - Matyja, A.

AU - McOnie, S.

AU - Medvedeva, T.

AU - Miyabayashi, K.

AU - Miyake, H.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mizuk, R.

AU - Mori, T.

AU - Nakano, E.

AU - Nakao, M.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okuno, S.

AU - Ozaki, H.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H. K.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schümann, J.

AU - Schwartz, A. J.

AU - Sekiya, A.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shiu, J. G.

AU - Singh, J. B.

AU - Somov, A.

AU - Stanič, S.

AU - Starič, M.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Tanaka, M.

AU - Taylor, G. N.

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. C.

AU - Wang, C. H.

AU - Wang, P.

AU - Wang, X. L.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zivko, T.

AU - Zupanc, A.

AU - Zwahlen, N.

AU - Zyukova, O.

PY - 2009/1/12

Y1 - 2009/1/12

N2 - We have studied Bs0→Ds-π+ and Bs0→Ds K± decays using 23.6fb-1 of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e+e- collider. This highly pure Bs0→Ds-π+ sample is used to measure the branching fraction, B(Bs0→Ds-π+)=[3.67-0.33+0.35(stat)-0. 42+0.43(syst)±0.49(fs)]×10-3 (fs=NBs(*)B̄s(*)/ Nbb̄) and the fractions of Bs0 event types at the Υ(5S) energy, in particular NBs*B̄s*/NBs(*)B̄s(*)=(90.1-4.0+3. 8±0.2)%. We also determine the masses M(Bs0)=(5364.4±1.3±0. 7)MeV/c2 and M(Bs*)=(5416.4±0.4±0.5)MeV/c2. In addition, we observe Bs0→Ds K± decays with a significance of 3.5σ and measure B(Bs0→Ds K±)=[2.4-1.0+1.2(stat)±0.3(syst)±0. 3(fs)]×10-4.

AB - We have studied Bs0→Ds-π+ and Bs0→Ds K± decays using 23.6fb-1 of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e+e- collider. This highly pure Bs0→Ds-π+ sample is used to measure the branching fraction, B(Bs0→Ds-π+)=[3.67-0.33+0.35(stat)-0. 42+0.43(syst)±0.49(fs)]×10-3 (fs=NBs(*)B̄s(*)/ Nbb̄) and the fractions of Bs0 event types at the Υ(5S) energy, in particular NBs*B̄s*/NBs(*)B̄s(*)=(90.1-4.0+3. 8±0.2)%. We also determine the masses M(Bs0)=(5364.4±1.3±0. 7)MeV/c2 and M(Bs*)=(5416.4±0.4±0.5)MeV/c2. In addition, we observe Bs0→Ds K± decays with a significance of 3.5σ and measure B(Bs0→Ds K±)=[2.4-1.0+1.2(stat)±0.3(syst)±0. 3(fs)]×10-4.

UR - http://www.scopus.com/inward/record.url?scp=58949104008&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.102.021801

DO - 10.1103/PhysRevLett.102.021801

M3 - Article

AN - SCOPUS:58949104008

SN - 0031-9007

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 021801

ER -

Measurement of the decay Bs0→Ds-π+ and evidence for Bs0→Ds K± in e+e- annihilation at s 10.87GeV

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