Observation of B+→pΛ̄π+π- at Belle

P. Chen; M. Z. Wang; H. Aihara; A. M. Bakich; V. Balagura; V. Bhardwaj; M. Bischofberger; A. Bozek; M. Bračko; T. E. Browder; M. C. Chang; P. Chang; A. Chen; B. G. Cheon; I. S. Cho; Y. Choi; J. Dalseno; M. Danilov; M. Dash; S. Eidelman; N. Gabyshev; P. Goldenzweig; B. Golob; B. Y. Han; T. Hara; H. Hayashii; Y. Hoshi; W. S. Hou; H. J. Hyun; T. Iijima; K. Inami; R. Itoh; Y. Iwasaki; J. H. Kang; N. Katayama; H. Kawai; H. Kichimi; H. J. Kim; H. O. Kim; Y. I. Kim; Y. J. Kim; B. R. Ko; S. Korpar; P. Križan; P. Krokovny; Y. J. Kwon; S. H. Kyeong; M. J. Lee; S. H. Lee; C. Liu; Y. Liu; D. Liventsev; R. Louvot; A. Matyja; S. McOnie; H. Miyata; Y. Miyazaki; R. Mizuk; E. Nakano; M. Nakao; S. Nishida; S. Ogawa; T. Ohshima; S. Okuno; G. Pakhlova; C. W. Park; H. K. Park; L. S. Peak; R. Pestotnik; M. Peters; M. Petrič; L. E. Piilonen; A. Poluektov; B. Reisert; H. Sahoo; Y. Sakai; O. Schneider; K. Senyo; M. E. Sevior; M. Shapkin; V. Shebalin; C. P. Shen; J. G. Shiu; F. Simon; P. Smerkol; A. Sokolov; E. Solovieva; M. Starič; T. Sumiyoshi; Y. Teramoto; K. Trabelsi; T. Tsuboyama; Y. Unno; S. Uno; P. Urquijo; G. Varner; K. E. Varvell; A. Vinokurova; C. H. Wang; P. Wang; Y. Watanabe; R. Wedd; J. T. Wei; E. Won; B. D. Yabsley; Y. Yamashita; C. Z. Yuan; Z. P. Zhang; V. Zhilich; V. Zhulanov; T. Zivko; A. Zupanc

doi:10.1103/PhysRevD.80.111103

Observation of B+→pΛ̄π+π- at Belle

P. Chen, M. Z. Wang, H. Aihara, A. M. Bakich, V. Balagura, V. Bhardwaj, M. Bischofberger, A. Bozek, M. Bračko, T. E. Browder, M. C. Chang, P. Chang, A. Chen, B. G. Cheon, I. S. Cho, Y. Choi, J. Dalseno, M. Danilov, M. Dash, S. EidelmanN. Gabyshev, P. Goldenzweig, B. Golob, B. Y. Han, T. Hara, H. Hayashii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, Y. Iwasaki, J. H. Kang, N. Katayama, H. Kawai, H. Kichimi, H. J. Kim, H. O. Kim, Y. I. Kim, Y. J. Kim, B. R. Ko, S. Korpar, P. Križan, P. Krokovny, Y. J. Kwon, S. H. Kyeong, M. J. Lee, S. H. Lee, C. Liu, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, H. Miyata, Y. Miyazaki, R. Mizuk, E. Nakano, M. Nakao, S. Nishida, S. Ogawa, T. Ohshima, S. Okuno, G. Pakhlova, C. W. Park, H. K. Park, L. S. Peak, R. Pestotnik, M. Peters, M. Petrič, L. E. Piilonen, A. Poluektov, B. Reisert, H. Sahoo, Y. Sakai, O. Schneider, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, J. G. Shiu, F. Simon, P. Smerkol, A. Sokolov, E. Solovieva, M. Starič, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, T. Tsuboyama, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, A. Vinokurova, C. H. Wang, P. Wang, Y. Watanabe, R. Wedd, J. T. Wei, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc

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Abstract

We study charmless B+ meson decays to the pΛ̄π+π- final state using a 605fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. There are significant signals found with the pΛ̄ mass peaking near threshold. The observed branching fraction for nonresonant B+→pΛ̄π+π - is (5.92-0.84+0.88(stat)±0.69(syst))×10-6 with a significance of 9.1 standard deviations. We also observe the intermediate three-body decay B+→pΛ̄ρ0 with a branching fraction of (4.78-0.64+0.67(stat) ±0.60(syst))×10-6 and a significance of 9.5 standard deviations, and find a hint of a B+→pΛ̄f2(1270) signal. No other intermediate three-body decay is found in this study.

Original language	English
Article number	111103
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	80
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.80.111103
State	Published - 14 Dec 2009

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10.1103/PhysRevD.80.111103

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Chen, P., Wang, M. Z., Aihara, H., Bakich, A. M., Balagura, V., Bhardwaj, V., Bischofberger, M., Bozek, A., Bračko, M., Browder, T. E., Chang, M. C., Chang, P., Chen, A., Cheon, B. G., Cho, I. S., Choi, Y., Dalseno, J., Danilov, M., Dash, M., ... Zupanc, A. (2009). Observation of B+→pΛ̄π+π- at Belle. Physical Review D - Particles, Fields, Gravitation and Cosmology, 80(11), Article 111103. https://doi.org/10.1103/PhysRevD.80.111103

@article{bef099d79694402f897564bd00cc5afc,

title = "Observation of B+→p{\=Λ}π+π- at Belle",

abstract = "We study charmless B+ meson decays to the p{\=Λ}π+π- final state using a 605fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. There are significant signals found with the p{\=Λ} mass peaking near threshold. The observed branching fraction for nonresonant B+→p{\=Λ}π+π - is (5.92-0.84+0.88(stat)±0.69(syst))×10-6 with a significance of 9.1 standard deviations. We also observe the intermediate three-body decay B+→p{\=Λ}ρ0 with a branching fraction of (4.78-0.64+0.67(stat) ±0.60(syst))×10-6 and a significance of 9.5 standard deviations, and find a hint of a B+→p{\=Λ}f2(1270) signal. No other intermediate three-body decay is found in this study.",

author = "P. Chen and Wang, {M. Z.} and H. Aihara and Bakich, {A. M.} and V. Balagura and V. Bhardwaj and M. Bischofberger and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and Chang, {M. C.} and P. Chang and A. Chen and Cheon, {B. G.} and Cho, {I. S.} and Y. Choi and J. Dalseno and M. Danilov and M. Dash and S. Eidelman and N. Gabyshev and P. Goldenzweig and B. Golob and Han, {B. Y.} and T. Hara and H. Hayashii and Y. Hoshi and Hou, {W. S.} and Hyun, {H. J.} and T. Iijima and K. Inami and R. Itoh and Y. Iwasaki and Kang, {J. H.} and N. Katayama and H. Kawai and H. Kichimi and Kim, {H. J.} and Kim, {H. O.} 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 Kwon, {Y. J.} and Kyeong, {S. H.} and Lee, {M. J.} and Lee, {S. H.} and C. Liu and Y. Liu and D. Liventsev and R. Louvot and A. Matyja and S. McOnie and H. Miyata and Y. Miyazaki and R. Mizuk and E. Nakano and M. Nakao and S. Nishida and S. Ogawa and T. Ohshima and S. Okuno and G. Pakhlova and Park, {C. W.} and Park, {H. K.} and Peak, {L. S.} and R. Pestotnik and M. Peters and M. Petri{\v c} and Piilonen, {L. E.} and A. Poluektov and B. Reisert and H. Sahoo and Y. Sakai and O. Schneider and K. Senyo and Sevior, {M. E.} and M. Shapkin and V. Shebalin and Shen, {C. P.} and Shiu, {J. G.} and F. Simon and P. Smerkol and A. Sokolov and E. Solovieva and M. Stari{\v c} and T. Sumiyoshi and Y. Teramoto and K. Trabelsi and T. Tsuboyama and Y. Unno and S. Uno and P. Urquijo and G. Varner and Varvell, {K. E.} and A. Vinokurova and Wang, {C. H.} and P. Wang and Y. Watanabe and R. Wedd and Wei, {J. T.} and E. Won and Yabsley, {B. D.} and Y. Yamashita and Yuan, {C. Z.} and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and T. Zivko and A. Zupanc",

year = "2009",

month = dec,

day = "14",

doi = "10.1103/PhysRevD.80.111103",

language = "English",

volume = "80",

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

issn = "1550-7998",

publisher = "American Physical Society",

number = "11",

}

Chen, P, Wang, MZ, Aihara, H, Bakich, AM, Balagura, V, Bhardwaj, V, Bischofberger, M, Bozek, A, Bračko, M, Browder, TE, Chang, MC, Chang, P, Chen, A, Cheon, BG, Cho, IS, Choi, Y, Dalseno, J, Danilov, M, Dash, M, Eidelman, S, Gabyshev, N, Goldenzweig, P, Golob, B, Han, BY, Hara, T, Hayashii, H, Hoshi, Y, Hou, WS, Hyun, HJ, Iijima, T, Inami, K, Itoh, R, Iwasaki, Y, Kang, JH, Katayama, N, Kawai, H, Kichimi, H, Kim, HJ, Kim, HO, Kim, YI, Kim, YJ, Ko, BR, Korpar, S, Križan, P, Krokovny, P, Kwon, YJ, Kyeong, SH, Lee, MJ, Lee, SH, Liu, C, Liu, Y, Liventsev, D, Louvot, R, Matyja, A, McOnie, S, Miyata, H, Miyazaki, Y, Mizuk, R, Nakano, E, Nakao, M, Nishida, S, Ogawa, S, Ohshima, T, Okuno, S, Pakhlova, G, Park, CW, Park, HK, Peak, LS, Pestotnik, R, Peters, M, Petrič, M, Piilonen, LE, Poluektov, A, Reisert, B, Sahoo, H, Sakai, Y, Schneider, O, Senyo, K, Sevior, ME, Shapkin, M, Shebalin, V, Shen, CP, Shiu, JG, Simon, F, Smerkol, P, Sokolov, A, Solovieva, E, Starič, M, Sumiyoshi, T, Teramoto, Y, Trabelsi, K, Tsuboyama, T, Unno, Y, Uno, S, Urquijo, P, Varner, G, Varvell, KE, Vinokurova, A, Wang, CH, Wang, P, Watanabe, Y, Wedd, R, Wei, JT, Won, E, Yabsley, BD, Yamashita, Y, Yuan, CZ, Zhang, ZP, Zhilich, V, Zhulanov, V, Zivko, T & Zupanc, A 2009, 'Observation of B+→pΛ̄π+π- at Belle', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 80, no. 11, 111103. https://doi.org/10.1103/PhysRevD.80.111103

TY - JOUR

T1 - Observation of B+→pΛ̄π+π- at Belle

AU - Chen, P.

AU - Wang, M. Z.

AU - Aihara, H.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Bhardwaj, V.

AU - Bischofberger, M.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, M. C.

AU - Chang, P.

AU - Chen, A.

AU - Cheon, B. G.

AU - Cho, I. S.

AU - Choi, Y.

AU - Dalseno, J.

AU - Danilov, M.

AU - Dash, M.

AU - Eidelman, S.

AU - Gabyshev, N.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Han, B. Y.

AU - Hara, T.

AU - Hayashii, H.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Itoh, R.

AU - Iwasaki, Y.

AU - Kang, J. H.

AU - Katayama, N.

AU - Kawai, H.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, H. O.

AU - Kim, Y. I.

AU - Kim, Y. J.

AU - Ko, B. R.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kwon, Y. J.

AU - Kyeong, S. H.

AU - Lee, M. J.

AU - Lee, S. H.

AU - Liu, C.

AU - Liu, Y.

AU - Liventsev, D.

AU - Louvot, R.

AU - Matyja, A.

AU - McOnie, S.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mizuk, R.

AU - Nakano, E.

AU - Nakao, M.

AU - Nishida, S.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okuno, S.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H. K.

AU - Peak, L. S.

AU - Pestotnik, R.

AU - Peters, M.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Poluektov, A.

AU - Reisert, B.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shebalin, V.

AU - Shen, C. P.

AU - Shiu, J. G.

AU - Simon, F.

AU - Smerkol, P.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Teramoto, Y.

AU - Trabelsi, K.

AU - Tsuboyama, T.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vinokurova, A.

AU - Wang, C. H.

AU - Wang, P.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Wei, J. T.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamashita, Y.

AU - Yuan, C. Z.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zivko, T.

AU - Zupanc, A.

PY - 2009/12/14

Y1 - 2009/12/14

N2 - We study charmless B+ meson decays to the pΛ̄π+π- final state using a 605fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. There are significant signals found with the pΛ̄ mass peaking near threshold. The observed branching fraction for nonresonant B+→pΛ̄π+π - is (5.92-0.84+0.88(stat)±0.69(syst))×10-6 with a significance of 9.1 standard deviations. We also observe the intermediate three-body decay B+→pΛ̄ρ0 with a branching fraction of (4.78-0.64+0.67(stat) ±0.60(syst))×10-6 and a significance of 9.5 standard deviations, and find a hint of a B+→pΛ̄f2(1270) signal. No other intermediate three-body decay is found in this study.

AB - We study charmless B+ meson decays to the pΛ̄π+π- final state using a 605fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. There are significant signals found with the pΛ̄ mass peaking near threshold. The observed branching fraction for nonresonant B+→pΛ̄π+π - is (5.92-0.84+0.88(stat)±0.69(syst))×10-6 with a significance of 9.1 standard deviations. We also observe the intermediate three-body decay B+→pΛ̄ρ0 with a branching fraction of (4.78-0.64+0.67(stat) ±0.60(syst))×10-6 and a significance of 9.5 standard deviations, and find a hint of a B+→pΛ̄f2(1270) signal. No other intermediate three-body decay is found in this study.

UR - http://www.scopus.com/inward/record.url?scp=73449105039&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.80.111103

DO - 10.1103/PhysRevD.80.111103

M3 - Article

AN - SCOPUS:73449105039

SN - 1550-7998

VL - 80

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

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

IS - 11

M1 - 111103

ER -

Observation of B+→pΛ̄π+π- at Belle

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