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 & 92 others 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, Eunil Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc

Research output: Contribution to journalArticle

7 Citations (Scopus)

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 languageEnglish
Article number111103
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume80
Issue number11
DOIs
Publication statusPublished - 2009 Dec 14

Fingerprint

standard deviation
decay
mesons
thresholds
detectors
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Chen, P., Wang, M. Z., Aihara, H., Bakich, A. M., Balagura, V., Bhardwaj, V., ... Zupanc, A. (2009). Observation of B+→pΛ̄π+π- at Belle. Physical Review D - Particles, Fields, Gravitation and Cosmology, 80(11), [111103]. https://doi.org/10.1103/PhysRevD.80.111103

Observation of B+→pΛ̄π+π- at Belle. / 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.; Eidelman, S.; Gabyshev, N.; Goldenzweig, P.; Golob, B.; Han, B. Y.; Hara, T.; Hayashii, H.; Hoshi, Y.; Hou, W. S.; Hyun, H. J.; Iijima, T.; Inami, K.; Itoh, R.; Iwasaki, Y.; Kang, J. H.; Katayama, N.; Kawai, H.; Kichimi, H.; Kim, H. J.; Kim, H. O.; Kim, Y. I.; Kim, Y. J.; Ko, B. R.; Korpar, S.; Križan, P.; Krokovny, P.; Kwon, Y. J.; Kyeong, S. H.; Lee, M. J.; Lee, S. H.; 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, C. W.; Park, H. K.; Peak, L. S.; Pestotnik, R.; Peters, M.; Petrič, M.; Piilonen, L. E.; Poluektov, A.; Reisert, B.; Sahoo, H.; Sakai, Y.; Schneider, O.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shebalin, V.; Shen, C. P.; Shiu, J. G.; 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, K. E.; Vinokurova, A.; Wang, C. H.; Wang, P.; Watanabe, Y.; Wedd, R.; Wei, J. T.; Won, Eunil; Yabsley, B. D.; Yamashita, Y.; Yuan, C. Z.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zivko, T.; Zupanc, A.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 80, No. 11, 111103, 14.12.2009.

Research output: Contribution to journalArticle

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
Chen P, Wang MZ, Aihara H, Bakich AM, Balagura V, Bhardwaj V et al. Observation of B+→pΛ̄π+π- at Belle. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2009 Dec 14;80(11). 111103. https://doi.org/10.1103/PhysRevD.80.111103
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. ; Eidelman, S. ; Gabyshev, N. ; Goldenzweig, P. ; Golob, B. ; Han, B. Y. ; Hara, T. ; Hayashii, H. ; Hoshi, Y. ; Hou, W. S. ; Hyun, H. J. ; Iijima, T. ; Inami, K. ; Itoh, R. ; Iwasaki, Y. ; Kang, J. H. ; Katayama, N. ; Kawai, H. ; Kichimi, H. ; Kim, H. J. ; Kim, H. O. ; Kim, Y. I. ; Kim, Y. J. ; Ko, B. R. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kwon, Y. J. ; Kyeong, S. H. ; Lee, M. J. ; Lee, S. H. ; 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, C. W. ; Park, H. K. ; Peak, L. S. ; Pestotnik, R. ; Peters, M. ; Petrič, M. ; Piilonen, L. E. ; Poluektov, A. ; Reisert, B. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Senyo, K. ; Sevior, M. E. ; Shapkin, M. ; Shebalin, V. ; Shen, C. P. ; Shiu, J. G. ; 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, K. E. ; Vinokurova, A. ; Wang, C. H. ; Wang, P. ; Watanabe, Y. ; Wedd, R. ; Wei, J. T. ; Won, Eunil ; Yabsley, B. D. ; Yamashita, Y. ; Yuan, C. Z. ; Zhang, Z. P. ; Zhilich, V. ; Zhulanov, V. ; Zivko, T. ; Zupanc, A. / Observation of B+→pΛ̄π+π- at Belle. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2009 ; Vol. 80, No. 11.
@article{6a5f0ea2e6a74841808ca93cfc3f4432,
title = "Observation of B+→pΛ̄π+π- at Belle",
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.",
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. Bračko 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. Križan 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. Petrič 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. Starič 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 Eunil 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 = "12",
day = "14",
doi = "10.1103/PhysRevD.80.111103",
language = "English",
volume = "80",
journal = "Physical review D: Particles and fields",
issn = "0556-2821",
publisher = "American Institute of Physics Publising LLC",
number = "11",

}

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, Eunil

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

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

U2 - 10.1103/PhysRevD.80.111103

DO - 10.1103/PhysRevD.80.111103

M3 - Article

VL - 80

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 11

M1 - 111103

ER -