Search for Λc+ →φpπ0 and branching fraction measurement of Λc+ →k-π+pπ0

B. Pal, A. J. Schwartz, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, M. Berger, V. Bhardwaj, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov & 136 others V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. DoleŽal, Z. Drásal, S. Eidelman, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, P. Goldenzweig, E. Guido, T. Hara, K. Hayasaka, H. Hayashii, W. S. Hou, C. L. Hsu, K. Inami, A. Ishikawa, R. Itoh, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, G. Karyan, Y. Kato, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. Krokovny, T. Kuhr, R. Kulasiri, Youngjoon Kwon, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, J. MacNaughton, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, M. Nayak, M. Niiyama, S. Nishida, S. Ogawa, H. Ono, P. Pakhlov, G. Pakhlova, S. Pardi, C. S. Park, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, T. A. Shibata, J. G. Shiu, F. Simon, A. Sokolov, E. Solovieva, M. Starič, J. F. Strube, M. Sumihama, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, S. Uno, C. Van Hulse, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, C. H. Wang, M. Z. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, S. Watanuki, E. Widmann, E. Won, Y. Yamashita, H. Ye, J. Yelton, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We have searched for the Cabibbo-suppressed decay Λc+→φpπ0 in e+e-collisions using a data sample corresponding to an integrated luminosity of 915 fb-1. The data were collected by the Belle experiment at the KEKB e+e-A symmetric-energy collider running at or near the Ï'(4S) and Ï'(5S) resonances. No significant signal is observed, and we set an upper limit on the branching fraction of B(Λc+→φpπ0)<15.3×10-5 at 90% confidence level. The contribution of nonresonant Λc+→K+K-pπ0 decays is found to be consistent with zero, and the corresponding upper limit on its branching fraction is set to be B(Λc+→K+K-pπ0)NR<6.3×10-5 at 90% confidence level. We also search for an intermediate hidden-strangeness pentaquark decay Ps+→φp. We see no evidence for this intermediate decay and set an upper limit on the product branching fraction of B(Λc+→Ps+π0)×B(Ps+→φp)<8.3×10-5 at 90% confidence level. Finally, we measure the branching fraction for the Cabibbo-favored decay Λc+→K-π+pπ0; the result is B(Λc+→K-π+pπ0)=(4.42±0.05(stat)±0.12(syst)±0.16(norm))%, which is the most precise measurement to date.

Original languageEnglish
Article number051102
JournalPhysical Review D
Volume96
Issue number5
DOIs
Publication statusPublished - 2017 Sep 1

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decay
confidence
strangeness
norms
luminosity
collisions
products
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Pal, B., Schwartz, A. J., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., ... Zupanc, A. (2017). Search for Λc+ →φpπ0 and branching fraction measurement of Λc+ →k-π+pπ0. Physical Review D, 96(5), [051102]. https://doi.org/10.1103/PhysRevD.96.051102
Pal, B. ; Schwartz, A. J. ; Adachi, I. ; Aihara, H. ; Al Said, S. ; Asner, D. M. ; Aushev, T. ; Ayad, R. ; Badhrees, I. ; Bakich, A. M. ; Bansal, V. ; Behera, P. ; Berger, M. ; Bhardwaj, V. ; Biswal, J. ; Bobrov, A. ; Bozek, A. ; Bračko, M. ; Browder, T. E. ; Červenkov, D. ; Chekelian, V. ; Chen, A. ; Cheon, B. G. ; Chilikin, K. ; Cho, K. ; Choi, S. K. ; Choi, Y. ; Cinabro, D. ; Dash, N. ; Di Carlo, S. ; DoleŽal, Z. ; Drásal, Z. ; Eidelman, S. ; Ferber, T. ; Fulsom, B. G. ; Gaur, V. ; Gabyshev, N. ; Garmash, A. ; Goldenzweig, P. ; Guido, E. ; Hara, T. ; Hayasaka, K. ; Hayashii, H. ; Hou, W. S. ; Hsu, C. L. ; Inami, K. ; Ishikawa, A. ; Itoh, R. ; Jacobs, W. W. ; Jaegle, I. ; Jeon, H. B. ; Jia, S. ; Jin, Y. ; Joffe, D. ; Joo, K. K. ; Karyan, G. ; Kato, Y. ; Kim, D. Y. ; Kim, J. B. ; Kim, K. T. ; Kim, S. H. ; Kim, Y. J. ; Kinoshita, K. ; Kodyš, P. ; Korpar, S. ; Kotchetkov, D. ; Krokovny, P. ; Kuhr, T. ; Kulasiri, R. ; Kwon, Youngjoon ; Li, C. H. ; Li, L. ; Li, Y. ; Li Gioi, L. ; Libby, J. ; Liventsev, D. ; Lubej, M. ; Luo, T. ; MacNaughton, J. ; Matvienko, D. ; Merola, M. ; Miyabayashi, K. ; Miyata, H. ; Mizuk, R. ; Mohanty, G. B. ; Moon, H. K. ; Mori, T. ; Mussa, R. ; Nakano, E. ; Nakao, M. ; Nanut, T. ; Nath, K. J. ; Nayak, M. ; Niiyama, M. ; Nishida, S. ; Ogawa, S. ; Ono, H. ; Pakhlov, P. ; Pakhlova, G. ; Pardi, S. ; Park, C. S. ; Paul, S. ; Pedlar, T. K. ; Pestotnik, R. ; Piilonen, L. E. ; Ritter, M. ; Rostomyan, A. ; Sakai, Y. ; Sandilya, S. ; Santelj, L. ; Sanuki, T. ; Savinov, V. ; Schneider, O. ; Schnell, G. ; Schwanda, C. ; Seino, Y. ; Senyo, K. ; Sevior, M. E. ; Shibata, T. A. ; Shiu, J. G. ; Simon, F. ; Sokolov, A. ; Solovieva, E. ; Starič, M. ; Strube, J. F. ; Sumihama, M. ; Sumiyoshi, T. ; Takizawa, M. ; Tamponi, U. ; Tanida, K. ; Tenchini, F. ; Uchida, M. ; Uglov, T. ; Uno, S. ; Van Hulse, C. ; Varner, G. ; Varvell, K. E. ; Vinokurova, A. ; Vorobyev, V. ; Wang, C. H. ; Wang, M. Z. ; Wang, X. L. ; Watanabe, M. ; Watanabe, Y. ; Watanuki, S. ; Widmann, E. ; Won, E. ; Yamashita, Y. ; Ye, H. ; Yelton, J. ; Yuan, C. Z. ; Zhang, Z. P. ; Zhilich, V. ; Zhukova, V. ; Zhulanov, V. ; Zupanc, A. / Search for Λc+ →φpπ0 and branching fraction measurement of Λc+ →k-π+pπ0. In: Physical Review D. 2017 ; Vol. 96, No. 5.
@article{c787249c2dc3400bb616a0c35b542edf,
title = "Search for Λc+ →φpπ0 and branching fraction measurement of Λc+ →k-π+pπ0",
abstract = "We have searched for the Cabibbo-suppressed decay Λc+→φpπ0 in e+e-collisions using a data sample corresponding to an integrated luminosity of 915 fb-1. The data were collected by the Belle experiment at the KEKB e+e-A symmetric-energy collider running at or near the {\"I}'(4S) and {\"I}'(5S) resonances. No significant signal is observed, and we set an upper limit on the branching fraction of B(Λc+→φpπ0)<15.3×10-5 at 90{\%} confidence level. The contribution of nonresonant Λc+→K+K-pπ0 decays is found to be consistent with zero, and the corresponding upper limit on its branching fraction is set to be B(Λc+→K+K-pπ0)NR<6.3×10-5 at 90{\%} confidence level. We also search for an intermediate hidden-strangeness pentaquark decay Ps+→φp. We see no evidence for this intermediate decay and set an upper limit on the product branching fraction of B(Λc+→Ps+π0)×B(Ps+→φp)<8.3×10-5 at 90{\%} confidence level. Finally, we measure the branching fraction for the Cabibbo-favored decay Λc+→K-π+pπ0; the result is B(Λc+→K-π+pπ0)=(4.42±0.05(stat)±0.12(syst)±0.16(norm)){\%}, which is the most precise measurement to date.",
author = "B. Pal and Schwartz, {A. J.} and I. Adachi and H. Aihara and {Al Said}, S. and Asner, {D. M.} and T. Aushev and R. Ayad and I. Badhrees and Bakich, {A. M.} and V. Bansal and P. Behera and M. Berger and V. Bhardwaj and J. Biswal and A. Bobrov and A. Bozek and M. Bračko and Browder, {T. E.} and D. Červenkov and V. Chekelian and A. Chen and Cheon, {B. G.} and K. Chilikin and K. Cho and Choi, {S. K.} and Y. Choi and D. Cinabro and N. Dash and {Di Carlo}, S. and Z. DoleŽal and Z. Dr{\'a}sal and S. Eidelman and T. Ferber and Fulsom, {B. G.} and V. Gaur and N. Gabyshev and A. Garmash and P. Goldenzweig and E. Guido and T. Hara and K. Hayasaka and H. Hayashii and Hou, {W. S.} and Hsu, {C. L.} and K. Inami and A. Ishikawa and R. Itoh and Jacobs, {W. W.} and I. Jaegle and Jeon, {H. B.} and S. Jia and Y. Jin and D. Joffe and Joo, {K. K.} and G. Karyan and Y. Kato and Kim, {D. Y.} and Kim, {J. B.} and Kim, {K. T.} and Kim, {S. H.} and Kim, {Y. J.} and K. Kinoshita and P. Kodyš and S. Korpar and D. Kotchetkov and P. Krokovny and T. Kuhr and R. Kulasiri and Youngjoon Kwon and Li, {C. H.} and L. Li and Y. Li and {Li Gioi}, L. and J. Libby and D. Liventsev and M. Lubej and T. Luo and J. MacNaughton and D. Matvienko and M. Merola and K. Miyabayashi and H. Miyata and R. Mizuk and Mohanty, {G. B.} and Moon, {H. K.} and T. Mori and R. Mussa and E. Nakano and M. Nakao and T. Nanut and Nath, {K. J.} and M. Nayak and M. Niiyama and S. Nishida and S. Ogawa and H. Ono and P. Pakhlov and G. Pakhlova and S. Pardi and Park, {C. S.} and S. Paul and Pedlar, {T. K.} and R. Pestotnik and Piilonen, {L. E.} and M. Ritter and A. Rostomyan and Y. Sakai and S. Sandilya and L. Santelj and T. Sanuki and V. Savinov and O. Schneider and G. Schnell and C. Schwanda and Y. Seino and K. Senyo and Sevior, {M. E.} and Shibata, {T. A.} and Shiu, {J. G.} and F. Simon and A. Sokolov and E. Solovieva and M. Starič and Strube, {J. F.} and M. Sumihama and T. Sumiyoshi and M. Takizawa and U. Tamponi and K. Tanida and F. Tenchini and M. Uchida and T. Uglov and S. Uno and {Van Hulse}, C. and G. Varner and Varvell, {K. E.} and A. Vinokurova and V. Vorobyev and Wang, {C. H.} and Wang, {M. Z.} and Wang, {X. L.} and M. Watanabe and Y. Watanabe and S. Watanuki and E. Widmann and E. Won and Y. Yamashita and H. Ye and J. Yelton and Yuan, {C. Z.} and Zhang, {Z. P.} and V. Zhilich and V. Zhukova and V. Zhulanov and A. Zupanc",
year = "2017",
month = "9",
day = "1",
doi = "10.1103/PhysRevD.96.051102",
language = "English",
volume = "96",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
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}

Pal, B, Schwartz, AJ, Adachi, I, Aihara, H, Al Said, S, Asner, DM, Aushev, T, Ayad, R, Badhrees, I, Bakich, AM, Bansal, V, Behera, P, Berger, M, Bhardwaj, V, Biswal, J, Bobrov, A, Bozek, A, Bračko, M, Browder, TE, Červenkov, D, Chekelian, V, Chen, A, Cheon, BG, Chilikin, K, Cho, K, Choi, SK, Choi, Y, Cinabro, D, Dash, N, Di Carlo, S, DoleŽal, Z, Drásal, Z, Eidelman, S, Ferber, T, Fulsom, BG, Gaur, V, Gabyshev, N, Garmash, A, Goldenzweig, P, Guido, E, Hara, T, Hayasaka, K, Hayashii, H, Hou, WS, Hsu, CL, Inami, K, Ishikawa, A, Itoh, R, Jacobs, WW, Jaegle, I, Jeon, HB, Jia, S, Jin, Y, Joffe, D, Joo, KK, Karyan, G, Kato, Y, Kim, DY, Kim, JB, Kim, KT, Kim, SH, Kim, YJ, Kinoshita, K, Kodyš, P, Korpar, S, Kotchetkov, D, Krokovny, P, Kuhr, T, Kulasiri, R, Kwon, Y, Li, CH, Li, L, Li, Y, Li Gioi, L, Libby, J, Liventsev, D, Lubej, M, Luo, T, MacNaughton, J, Matvienko, D, Merola, M, Miyabayashi, K, Miyata, H, Mizuk, R, Mohanty, GB, Moon, HK, Mori, T, Mussa, R, Nakano, E, Nakao, M, Nanut, T, Nath, KJ, Nayak, M, Niiyama, M, Nishida, S, Ogawa, S, Ono, H, Pakhlov, P, Pakhlova, G, Pardi, S, Park, CS, Paul, S, Pedlar, TK, Pestotnik, R, Piilonen, LE, Ritter, M, Rostomyan, A, Sakai, Y, Sandilya, S, Santelj, L, Sanuki, T, Savinov, V, Schneider, O, Schnell, G, Schwanda, C, Seino, Y, Senyo, K, Sevior, ME, Shibata, TA, Shiu, JG, Simon, F, Sokolov, A, Solovieva, E, Starič, M, Strube, JF, Sumihama, M, Sumiyoshi, T, Takizawa, M, Tamponi, U, Tanida, K, Tenchini, F, Uchida, M, Uglov, T, Uno, S, Van Hulse, C, Varner, G, Varvell, KE, Vinokurova, A, Vorobyev, V, Wang, CH, Wang, MZ, Wang, XL, Watanabe, M, Watanabe, Y, Watanuki, S, Widmann, E, Won, E, Yamashita, Y, Ye, H, Yelton, J, Yuan, CZ, Zhang, ZP, Zhilich, V, Zhukova, V, Zhulanov, V & Zupanc, A 2017, 'Search for Λc+ →φpπ0 and branching fraction measurement of Λc+ →k-π+pπ0', Physical Review D, vol. 96, no. 5, 051102. https://doi.org/10.1103/PhysRevD.96.051102

Search for Λc+ →φpπ0 and branching fraction measurement of Λc+ →k-π+pπ0. / Pal, B.; Schwartz, A. J.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Aushev, T.; Ayad, R.; Badhrees, I.; Bakich, A. M.; Bansal, V.; Behera, P.; Berger, M.; Bhardwaj, V.; Biswal, J.; Bobrov, A.; Bozek, A.; Bračko, M.; Browder, T. E.; Červenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, K.; Choi, S. K.; Choi, Y.; Cinabro, D.; Dash, N.; Di Carlo, S.; DoleŽal, Z.; Drásal, Z.; Eidelman, S.; Ferber, T.; Fulsom, B. G.; Gaur, V.; Gabyshev, N.; Garmash, A.; Goldenzweig, P.; Guido, E.; Hara, T.; Hayasaka, K.; Hayashii, H.; Hou, W. S.; Hsu, C. L.; Inami, K.; Ishikawa, A.; Itoh, R.; Jacobs, W. W.; Jaegle, I.; Jeon, H. B.; Jia, S.; Jin, Y.; Joffe, D.; Joo, K. K.; Karyan, G.; Kato, Y.; Kim, D. Y.; Kim, J. B.; Kim, K. T.; Kim, S. H.; Kim, Y. J.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Kotchetkov, D.; Krokovny, P.; Kuhr, T.; Kulasiri, R.; Kwon, Youngjoon; Li, C. H.; Li, L.; Li, Y.; Li Gioi, L.; Libby, J.; Liventsev, D.; Lubej, M.; Luo, T.; MacNaughton, J.; Matvienko, D.; Merola, M.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moon, H. K.; Mori, T.; Mussa, R.; Nakano, E.; Nakao, M.; Nanut, T.; Nath, K. J.; Nayak, M.; Niiyama, M.; Nishida, S.; Ogawa, S.; Ono, H.; Pakhlov, P.; Pakhlova, G.; Pardi, S.; Park, C. S.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Ritter, M.; Rostomyan, A.; Sakai, Y.; Sandilya, S.; Santelj, L.; Sanuki, T.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Seino, Y.; Senyo, K.; Sevior, M. E.; Shibata, T. A.; Shiu, J. G.; Simon, F.; Sokolov, A.; Solovieva, E.; Starič, M.; Strube, J. F.; Sumihama, M.; Sumiyoshi, T.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Uchida, M.; Uglov, T.; Uno, S.; Van Hulse, C.; Varner, G.; Varvell, K. E.; Vinokurova, A.; Vorobyev, V.; Wang, C. H.; Wang, M. Z.; Wang, X. L.; Watanabe, M.; Watanabe, Y.; Watanuki, S.; Widmann, E.; Won, E.; Yamashita, Y.; Ye, H.; Yelton, J.; Yuan, C. Z.; Zhang, Z. P.; Zhilich, V.; Zhukova, V.; Zhulanov, V.; Zupanc, A.

In: Physical Review D, Vol. 96, No. 5, 051102, 01.09.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Search for Λc+ →φpπ0 and branching fraction measurement of Λc+ →k-π+pπ0

AU - Pal, B.

AU - Schwartz, A. J.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Aushev, T.

AU - Ayad, R.

AU - Badhrees, I.

AU - Bakich, A. M.

AU - Bansal, V.

AU - Behera, P.

AU - Berger, M.

AU - Bhardwaj, V.

AU - Biswal, J.

AU - Bobrov, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Červenkov, D.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dash, N.

AU - Di Carlo, S.

AU - DoleŽal, Z.

AU - Drásal, Z.

AU - Eidelman, S.

AU - Ferber, T.

AU - Fulsom, B. G.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Goldenzweig, P.

AU - Guido, E.

AU - Hara, T.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hou, W. S.

AU - Hsu, C. L.

AU - Inami, K.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Jacobs, W. W.

AU - Jaegle, I.

AU - Jeon, H. B.

AU - Jia, S.

AU - Jin, Y.

AU - Joffe, D.

AU - Joo, K. K.

AU - Karyan, G.

AU - Kato, Y.

AU - Kim, D. Y.

AU - Kim, J. B.

AU - Kim, K. T.

AU - Kim, S. H.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Kodyš, P.

AU - Korpar, S.

AU - Kotchetkov, D.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kulasiri, R.

AU - Kwon, Youngjoon

AU - Li, C. H.

AU - Li, L.

AU - Li, Y.

AU - Li Gioi, L.

AU - Libby, J.

AU - Liventsev, D.

AU - Lubej, M.

AU - Luo, T.

AU - MacNaughton, J.

AU - Matvienko, D.

AU - Merola, M.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Mizuk, R.

AU - Mohanty, G. B.

AU - Moon, H. K.

AU - Mori, T.

AU - Mussa, R.

AU - Nakano, E.

AU - Nakao, M.

AU - Nanut, T.

AU - Nath, K. J.

AU - Nayak, M.

AU - Niiyama, M.

AU - Nishida, S.

AU - Ogawa, S.

AU - Ono, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Pardi, S.

AU - Park, C. S.

AU - Paul, S.

AU - Pedlar, T. K.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Ritter, M.

AU - Rostomyan, A.

AU - Sakai, Y.

AU - Sandilya, S.

AU - Santelj, L.

AU - Sanuki, T.

AU - Savinov, V.

AU - Schneider, O.

AU - Schnell, G.

AU - Schwanda, C.

AU - Seino, Y.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shibata, T. A.

AU - Shiu, J. G.

AU - Simon, F.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Starič, M.

AU - Strube, J. F.

AU - Sumihama, M.

AU - Sumiyoshi, T.

AU - Takizawa, M.

AU - Tamponi, U.

AU - Tanida, K.

AU - Tenchini, F.

AU - Uchida, M.

AU - Uglov, T.

AU - Uno, S.

AU - Van Hulse, C.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vinokurova, A.

AU - Vorobyev, V.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Wang, X. L.

AU - Watanabe, M.

AU - Watanabe, Y.

AU - Watanuki, S.

AU - Widmann, E.

AU - Won, E.

AU - Yamashita, Y.

AU - Ye, H.

AU - Yelton, J.

AU - Yuan, C. Z.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhukova, V.

AU - Zhulanov, V.

AU - Zupanc, A.

PY - 2017/9/1

Y1 - 2017/9/1

N2 - We have searched for the Cabibbo-suppressed decay Λc+→φpπ0 in e+e-collisions using a data sample corresponding to an integrated luminosity of 915 fb-1. The data were collected by the Belle experiment at the KEKB e+e-A symmetric-energy collider running at or near the Ï'(4S) and Ï'(5S) resonances. No significant signal is observed, and we set an upper limit on the branching fraction of B(Λc+→φpπ0)<15.3×10-5 at 90% confidence level. The contribution of nonresonant Λc+→K+K-pπ0 decays is found to be consistent with zero, and the corresponding upper limit on its branching fraction is set to be B(Λc+→K+K-pπ0)NR<6.3×10-5 at 90% confidence level. We also search for an intermediate hidden-strangeness pentaquark decay Ps+→φp. We see no evidence for this intermediate decay and set an upper limit on the product branching fraction of B(Λc+→Ps+π0)×B(Ps+→φp)<8.3×10-5 at 90% confidence level. Finally, we measure the branching fraction for the Cabibbo-favored decay Λc+→K-π+pπ0; the result is B(Λc+→K-π+pπ0)=(4.42±0.05(stat)±0.12(syst)±0.16(norm))%, which is the most precise measurement to date.

AB - We have searched for the Cabibbo-suppressed decay Λc+→φpπ0 in e+e-collisions using a data sample corresponding to an integrated luminosity of 915 fb-1. The data were collected by the Belle experiment at the KEKB e+e-A symmetric-energy collider running at or near the Ï'(4S) and Ï'(5S) resonances. No significant signal is observed, and we set an upper limit on the branching fraction of B(Λc+→φpπ0)<15.3×10-5 at 90% confidence level. The contribution of nonresonant Λc+→K+K-pπ0 decays is found to be consistent with zero, and the corresponding upper limit on its branching fraction is set to be B(Λc+→K+K-pπ0)NR<6.3×10-5 at 90% confidence level. We also search for an intermediate hidden-strangeness pentaquark decay Ps+→φp. We see no evidence for this intermediate decay and set an upper limit on the product branching fraction of B(Λc+→Ps+π0)×B(Ps+→φp)<8.3×10-5 at 90% confidence level. Finally, we measure the branching fraction for the Cabibbo-favored decay Λc+→K-π+pπ0; the result is B(Λc+→K-π+pπ0)=(4.42±0.05(stat)±0.12(syst)±0.16(norm))%, which is the most precise measurement to date.

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U2 - 10.1103/PhysRevD.96.051102

DO - 10.1103/PhysRevD.96.051102

M3 - Article

VL - 96

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 5

M1 - 051102

ER -

Pal B, Schwartz AJ, Adachi I, Aihara H, Al Said S, Asner DM et al. Search for Λc+ →φpπ0 and branching fraction measurement of Λc+ →k-π+pπ0. Physical Review D. 2017 Sep 1;96(5). 051102. https://doi.org/10.1103/PhysRevD.96.051102