Study of decay mechanisms in B-→Λc+p̄π- decays and observation of low-mass structure in the Λc+p̄ system

N. Gabyshev; K. Abe; K. Abe; I. Adachi; H. Aihara; Y. Asano; V. Aulchenko; T. Aushev; A. M. Bakich; U. Bitenc; I. Bizjak; S. Blyth; A. Bondar; A. Bozek; M. Bračko; J. Brodzicka; T. E. Browder; P. Chang; Y. Chao; A. Chen; W. T. Chen; B. G. Cheon; R. Chistov; S. K. Choi; Y. Choi; A. Chuvikov; S. Cole; J. Dalseno; M. Danilov; M. Dash; A. Drutskoy; S. Eidelman; Y. Enari; S. Fratina; T. Gershon; G. Gokhroo; B. Golob; A. Gorišek; T. Hara; H. Hayashii; M. Hazumi; T. Hokuue; Y. Hoshi; S. Hou; W. S. Hou; Y. B. Hsiung; T. Iijima; A. Imoto; K. Inami; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; J. H. Kang; J. S. Kang; S. U. Kataoka; N. Katayama; H. Kawai; T. Kawasaki; H. R. Khan; H. Kichimi; H. J. Kim; H. O. Kim; S. K. Kim; S. M. Kim; K. Kinoshita; S. Korpar; P. Krokovny; S. Kumar; C. C. Kuo; A. Kuzmin; Y. J. Kwon; J. S. Lange; G. Leder; T. Lesiak; S. W. Lin; F. Mandl; T. Matsumoto; Y. Mikami; W. Mitaroff; H. Miyake; H. Miyata; R. Mizuk; T. Nagamine; Y. Nagasaka; E. Nakano; M. Nakao; H. Nakazawa; Z. Natkaniec; S. Nishida; O. Nitoh; S. Ogawa; T. Ohshima; T. Okabe; S. Okuno; S. L. Olsen; Y. Onuki; H. Ozaki; H. Palka; C. W. Park; H. Park; N. Parslow; L. S. Peak; R. Pestotnik; L. E. Piilonen; M. Rozanska; H. Sagawa; Y. Sakai; N. Sato; T. Schietinger; O. Schneider; A. J. Schwartz; K. Senyo; R. Seuster; M. E. Sevior; H. Shibuya; V. Sidorov; J. B. Singh; A. Somov; R. Stamen; S. Stanič; M. Starič; T. Sumiyoshi; S. Y. Suzuki; O. Tajima; F. Takasaki; K. Tamai; N. Tamura; M. Tanaka; Y. Teramoto; X. C. Tian; T. Tsuboyama; T. Tsukamoto; S. Uehara; T. Uglov; K. Ueno; S. Uno; P. Urquijo; G. Varner; K. E. Varvell; S. Villa; C. H. Wang; M. Z. Wang; Q. L. Xie; B. D. Yabsley; A. Yamaguchi; H. Yamamoto; Y. Yamashita; M. Yamauchi; H. Yang; C. C. Zhang; J. Zhang; L. M. Zhang; Z. P. Zhang; V. Zhilich; D. Žontar

doi:10.1103/PhysRevLett.97.242001

Study of decay mechanisms in B-→Λc+p̄π- decays and observation of low-mass structure in the Λc+p̄ system

N. Gabyshev, K. Abe, K. Abe, I. Adachi, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, A. M. Bakich, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. ChenW. T. Chen, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, Y. Enari, S. Fratina, T. Gershon, G. Gokhroo, B. Golob, A. Gorišek, T. Hara, H. Hayashii, M. Hazumi, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Krokovny, S. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, J. S. Lange, G. Leder, T. Lesiak, S. W. Lin, F. Mandl, T. Matsumoto, Y. Mikami, W. Mitaroff, H. Miyake, H. Miyata, R. Mizuk, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, H. Palka, C. W. Park, H. Park, N. Parslow, L. S. Peak, R. Pestotnik, L. E. Piilonen, M. Rozanska, H. Sagawa, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, A. J. Schwartz, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, V. Sidorov, J. B. Singh, A. Somov, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, S. Villa, C. H. Wang, M. Z. Wang, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, H. Yang, C. C. Zhang, J. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Žontar

Department of Physics

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26 Citations (Scopus)

Abstract

Using a sample of 152×106 BB̄ pairs accumulated with the Belle detector at the KEKB e+e- collider, we study the decay mechanism of three-body charmed decay B-→Λc+p̄π-. The intermediate two-body decay B-→Σc(2455)0p̄ is observed for the first time with a branching fraction of (3.7±0.7±0.4±1.0)×10-5 and a statistical significance of 8.4σ. We also observe a low-mass enhancement in the (Λc+p̄) system, which can be parametrized as a Breit-Wigner function with a mass of (3.35-0.02+0.01±0.02)GeV/c2 and a width of (0.07-0.03+0.04±0.04)GeV/c2. We measure its branching fraction to be (3.9-0.7+0.8±0.4±1.0)×10-5 with a statistical significance of 6.2σ. The errors are statistical, systematic, and that of the Λc+→pK-π+ decay branching fraction.

Original language	English
Article number	242001
Journal	Physical review letters
Volume	97
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.97.242001
Publication status	Published - 2006

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.97.242001

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Gabyshev, N., Abe, K., Abe, K., Adachi, I., Aihara, H., Asano, Y., Aulchenko, V., Aushev, T., Bakich, A. M., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., Chang, P., Chao, Y., ... Žontar, D. (2006). Study of decay mechanisms in B-→Λc+p̄π- decays and observation of low-mass structure in the Λc+p̄ system. Physical review letters, 97(24), [242001]. https://doi.org/10.1103/PhysRevLett.97.242001

@article{86529cbf426f40cb996c5cd747d3427c,

title = "Study of decay mechanisms in B-→Λc+{\=p}π- decays and observation of low-mass structure in the Λc+{\=p} system",

abstract = "Using a sample of 152×106 B{\=B} pairs accumulated with the Belle detector at the KEKB e+e- collider, we study the decay mechanism of three-body charmed decay B-→Λc+{\=p}π-. The intermediate two-body decay B-→Σc(2455)0{\=p} is observed for the first time with a branching fraction of (3.7±0.7±0.4±1.0)×10-5 and a statistical significance of 8.4σ. We also observe a low-mass enhancement in the (Λc+{\=p}) system, which can be parametrized as a Breit-Wigner function with a mass of (3.35-0.02+0.01±0.02)GeV/c2 and a width of (0.07-0.03+0.04±0.04)GeV/c2. We measure its branching fraction to be (3.9-0.7+0.8±0.4±1.0)×10-5 with a statistical significance of 6.2σ. The errors are statistical, systematic, and that of the Λc+→pK-π+ decay branching fraction.",

author = "N. Gabyshev and K. Abe and K. Abe and I. Adachi and H. Aihara and Y. Asano and V. Aulchenko and T. Aushev and Bakich, {A. M.} and U. Bitenc and I. Bizjak and S. Blyth and A. Bondar and A. Bozek and M. Bra{\v c}ko and J. Brodzicka and Browder, {T. E.} and P. Chang and Y. Chao and A. Chen and Chen, {W. T.} and Cheon, {B. G.} and R. Chistov and Choi, {S. K.} and Y. Choi and A. Chuvikov and S. Cole and J. Dalseno and M. Danilov and M. Dash and A. Drutskoy and S. Eidelman and Y. Enari and S. Fratina and T. Gershon and G. Gokhroo and B. Golob and A. Gori{\v s}ek and T. Hara and H. Hayashii and M. Hazumi and T. Hokuue and Y. Hoshi and S. Hou and Hou, {W. S.} and Hsiung, {Y. B.} and T. Iijima and A. Imoto and K. Inami and A. Ishikawa and R. Itoh and M. Iwasaki and Y. Iwasaki and Kang, {J. H.} and Kang, {J. S.} and Kataoka, {S. U.} and N. Katayama and H. Kawai and T. Kawasaki and Khan, {H. R.} and H. Kichimi and Kim, {H. J.} and Kim, {H. O.} and Kim, {S. K.} and Kim, {S. M.} and K. Kinoshita and S. Korpar and P. Krokovny and S. Kumar and Kuo, {C. C.} and A. Kuzmin and Kwon, {Y. J.} and Lange, {J. S.} and G. Leder and T. Lesiak and Lin, {S. W.} and F. Mandl and T. Matsumoto and Y. Mikami and W. Mitaroff and H. Miyake and H. Miyata and R. Mizuk and T. Nagamine and Y. Nagasaka and E. Nakano and M. Nakao and H. Nakazawa and Z. Natkaniec and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and T. Okabe and S. Okuno and Olsen, {S. L.} and Y. Onuki and H. Ozaki and H. Palka and Park, {C. W.} and H. Park and N. Parslow and Peak, {L. S.} and R. Pestotnik and Piilonen, {L. E.} and M. Rozanska and H. Sagawa and Y. Sakai and N. Sato and T. Schietinger and O. Schneider and Schwartz, {A. J.} and K. Senyo and R. Seuster and Sevior, {M. E.} and H. Shibuya and V. Sidorov and Singh, {J. B.} and A. Somov and R. Stamen and S. Stani{\v c} and M. Stari{\v c} and T. Sumiyoshi and Suzuki, {S. Y.} and O. Tajima and F. Takasaki and K. Tamai and N. Tamura and M. Tanaka and Y. Teramoto and Tian, {X. C.} and T. Tsuboyama and T. Tsukamoto and S. Uehara and T. Uglov and K. Ueno and S. Uno and P. Urquijo and G. Varner and Varvell, {K. E.} and S. Villa and Wang, {C. H.} and Wang, {M. Z.} and Xie, {Q. L.} and Yabsley, {B. D.} and A. Yamaguchi and H. Yamamoto and Y. Yamashita and M. Yamauchi and H. Yang and Zhang, {C. C.} and J. Zhang and Zhang, {L. M.} and Zhang, {Z. P.} and V. Zhilich and D. {\v Z}ontar",

year = "2006",

doi = "10.1103/PhysRevLett.97.242001",

language = "English",

volume = "97",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "24",

}

Gabyshev, N, Abe, K, Abe, K, Adachi, I, Aihara, H, Asano, Y, Aulchenko, V, Aushev, T, Bakich, AM, Bitenc, U, Bizjak, I, Blyth, S, Bondar, A, Bozek, A, Bračko, M, Brodzicka, J, Browder, TE, Chang, P, Chao, Y, Chen, A, Chen, WT, Cheon, BG, Chistov, R, Choi, SK, Choi, Y, Chuvikov, A, Cole, S, Dalseno, J, Danilov, M, Dash, M, Drutskoy, A, Eidelman, S, Enari, Y, Fratina, S, Gershon, T, Gokhroo, G, Golob, B, Gorišek, A, Hara, T, Hayashii, H, Hazumi, M, Hokuue, T, Hoshi, Y, Hou, S, Hou, WS, Hsiung, YB, Iijima, T, Imoto, A, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Kang, JH, Kang, JS, Kataoka, SU, Katayama, N, Kawai, H, Kawasaki, T, Khan, HR, Kichimi, H, Kim, HJ, Kim, HO, Kim, SK, Kim, SM, Kinoshita, K, Korpar, S, Krokovny, P, Kumar, S, Kuo, CC, Kuzmin, A, Kwon, YJ, Lange, JS, Leder, G, Lesiak, T, Lin, SW, Mandl, F, Matsumoto, T, Mikami, Y, Mitaroff, W, Miyake, H, Miyata, H, Mizuk, R, Nagamine, T, Nagasaka, Y, Nakano, E, Nakao, M, Nakazawa, H, Natkaniec, Z, Nishida, S, Nitoh, O, Ogawa, S, Ohshima, T, Okabe, T, Okuno, S, Olsen, SL, Onuki, Y, Ozaki, H, Palka, H, Park, CW, Park, H, Parslow, N, Peak, LS, Pestotnik, R, Piilonen, LE, Rozanska, M, Sagawa, H, Sakai, Y, Sato, N, Schietinger, T, Schneider, O, Schwartz, AJ, Senyo, K, Seuster, R, Sevior, ME, Shibuya, H, Sidorov, V, Singh, JB, Somov, A, Stamen, R, Stanič, S, Starič, M, Sumiyoshi, T, Suzuki, SY, Tajima, O, Takasaki, F, Tamai, K, Tamura, N, Tanaka, M, Teramoto, Y, Tian, XC, Tsuboyama, T, Tsukamoto, T, Uehara, S, Uglov, T, Ueno, K, Uno, S, Urquijo, P, Varner, G, Varvell, KE, Villa, S, Wang, CH, Wang, MZ, Xie, QL, Yabsley, BD, Yamaguchi, A, Yamamoto, H, Yamashita, Y, Yamauchi, M, Yang, H, Zhang, CC, Zhang, J, Zhang, LM, Zhang, ZP, Zhilich, V & Žontar, D 2006, 'Study of decay mechanisms in B-→Λc+p̄π- decays and observation of low-mass structure in the Λc+p̄ system', Physical review letters, vol. 97, no. 24, 242001. https://doi.org/10.1103/PhysRevLett.97.242001

TY - JOUR

T1 - Study of decay mechanisms in B-→Λc+p̄π- decays and observation of low-mass structure in the Λc+p̄ system

AU - Gabyshev, N.

AU - Abe, K.

AU - Adachi, I.

AU - Aihara, H.

AU - Asano, Y.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Bitenc, U.

AU - Bizjak, I.

AU - Blyth, S.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Brodzicka, J.

AU - Browder, T. E.

AU - Chang, P.

AU - Chao, Y.

AU - Chen, A.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Choi, S. K.

AU - Choi, Y.

AU - Chuvikov, A.

AU - Cole, S.

AU - Dalseno, J.

AU - Danilov, M.

AU - Dash, M.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Enari, Y.

AU - Fratina, S.

AU - Gershon, T.

AU - Gokhroo, G.

AU - Golob, B.

AU - Gorišek, A.

AU - Hara, T.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, S.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Iijima, T.

AU - Imoto, A.

AU - Inami, K.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Kang, J. H.

AU - Kang, J. S.

AU - Kataoka, S. U.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Khan, H. R.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, H. O.

AU - Kim, S. K.

AU - Kim, S. M.

AU - Kinoshita, K.

AU - Korpar, S.

AU - Krokovny, P.

AU - Kumar, S.

AU - Kuo, C. C.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lange, J. S.

AU - Leder, G.

AU - Lesiak, T.

AU - Lin, S. W.

AU - Mandl, F.

AU - Matsumoto, T.

AU - Mikami, Y.

AU - Mitaroff, W.

AU - Miyake, H.

AU - Miyata, H.

AU - Mizuk, R.

AU - Nagamine, T.

AU - Nagasaka, Y.

AU - Nakano, E.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Natkaniec, Z.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okabe, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Onuki, Y.

AU - Ozaki, H.

AU - Palka, H.

AU - Park, C. W.

AU - Park, H.

AU - Parslow, N.

AU - Peak, L. S.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Rozanska, M.

AU - Sagawa, H.

AU - Sakai, Y.

AU - Sato, N.

AU - Schietinger, T.

AU - Schneider, O.

AU - Schwartz, A. J.

AU - Senyo, K.

AU - Seuster, R.

AU - Sevior, M. E.

AU - Shibuya, H.

AU - Sidorov, V.

AU - Singh, J. B.

AU - Somov, A.

AU - Stamen, R.

AU - Stanič, S.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Suzuki, S. Y.

AU - Tajima, O.

AU - Takasaki, F.

AU - Tamai, K.

AU - Tamura, N.

AU - Tanaka, M.

AU - Teramoto, Y.

AU - Tian, X. C.

AU - Tsuboyama, T.

AU - Tsukamoto, T.

AU - Uehara, S.

AU - Uglov, T.

AU - Ueno, K.

AU - Uno, S.

AU - Urquijo, P.

AU - Varner, G.

AU - Varvell, K. E.

AU - Villa, S.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Xie, Q. L.

AU - Yabsley, B. D.

AU - Yamaguchi, A.

AU - Yamamoto, H.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Yang, H.

AU - Zhang, C. C.

AU - Zhang, J.

AU - Zhang, L. M.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Žontar, D.

PY - 2006

Y1 - 2006

N2 - Using a sample of 152×106 BB̄ pairs accumulated with the Belle detector at the KEKB e+e- collider, we study the decay mechanism of three-body charmed decay B-→Λc+p̄π-. The intermediate two-body decay B-→Σc(2455)0p̄ is observed for the first time with a branching fraction of (3.7±0.7±0.4±1.0)×10-5 and a statistical significance of 8.4σ. We also observe a low-mass enhancement in the (Λc+p̄) system, which can be parametrized as a Breit-Wigner function with a mass of (3.35-0.02+0.01±0.02)GeV/c2 and a width of (0.07-0.03+0.04±0.04)GeV/c2. We measure its branching fraction to be (3.9-0.7+0.8±0.4±1.0)×10-5 with a statistical significance of 6.2σ. The errors are statistical, systematic, and that of the Λc+→pK-π+ decay branching fraction.

AB - Using a sample of 152×106 BB̄ pairs accumulated with the Belle detector at the KEKB e+e- collider, we study the decay mechanism of three-body charmed decay B-→Λc+p̄π-. The intermediate two-body decay B-→Σc(2455)0p̄ is observed for the first time with a branching fraction of (3.7±0.7±0.4±1.0)×10-5 and a statistical significance of 8.4σ. We also observe a low-mass enhancement in the (Λc+p̄) system, which can be parametrized as a Breit-Wigner function with a mass of (3.35-0.02+0.01±0.02)GeV/c2 and a width of (0.07-0.03+0.04±0.04)GeV/c2. We measure its branching fraction to be (3.9-0.7+0.8±0.4±1.0)×10-5 with a statistical significance of 6.2σ. The errors are statistical, systematic, and that of the Λc+→pK-π+ decay branching fraction.

UR - http://www.scopus.com/inward/record.url?scp=33845462594&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33845462594&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.97.242001

DO - 10.1103/PhysRevLett.97.242001

M3 - Article

AN - SCOPUS:33845462594

SN - 0031-9007

VL - 97

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

M1 - 242001

ER -

Study of decay mechanisms in B-→Λc+p̄π- decays and observation of low-mass structure in the Λc+p̄ system

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