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; 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; Y. J. 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

doi:10.1103/PhysRevD.96.051102

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. ČervenkovV. 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, Y. J. 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

Department of Physics

Research output: Contribution to journal › Article › peer-review

22 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 language	English
Article number	051102
Journal	Physical Review D
Volume	96
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.96.051102
Publication status	Published - 2017 Sept 1

Bibliographical note

Funding Information:
We thank the KEKB group for the excellent operation of the accelerator; the KEK cryogenics group for the efficient operation of the solenoid; and the KEK computer group, the National Institute of Informatics, and the PNNL/EMSL computing group for valuable computing and SINET5 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council; Austrian Science Fund under Grant No. P 26794-N20; the National Natural Science Foundation of China under Contracts No. 10575109, No. 10775142, No. 10875115, No. 11175187, No. 11475187, No. 11521505 and No. 11575017; the Chinese Academy of Science Center for Excellence in Particle Physics; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; the WCU program of the Ministry of Education, National Research Foundation (NRF) of Korea Grants No. 2011-0029457, No. 2012-0008143, No. 2014R1A2A2A01005286, No. 2014R1A2A2A01002734, No. 2015R1A2A2A01003280, No. 2015H1A2A1033649, No. 2016R1D1A1B01010135, No. 2016K1A3A7A09005603, No. 2016K1A3A7A09005604, No. 2016R1D1A1B02012900, No. 2016K1A3A7A09005606, No. NRF-2013K1A3A7A06056592; the Brain Korea 21-Plus program, Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project and the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Education and Science of the Russian Federation and the Russian Foundation for Basic Research; the Slovenian Research Agency; Ikerbasque, Basque Foundation for Science and MINECO (Juan de la Cierva), Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the U.S. Department of Energy and the National Science Foundation.

Publisher Copyright:
© 2017 American Physical Society.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevD.96.051102

Cite this

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., ... 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

@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. Bra{\v c}ko and Browder, {T. E.} and D. {\v C}ervenkov 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. Dole{\v Z}al 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. Kody{\v s} and S. Korpar and D. Kotchetkov and P. Krokovny and T. Kuhr and R. Kulasiri and Kwon, {Y. J.} 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. Stari{\v c} 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",

note = "Funding Information: We thank the KEKB group for the excellent operation of the accelerator; the KEK cryogenics group for the efficient operation of the solenoid; and the KEK computer group, the National Institute of Informatics, and the PNNL/EMSL computing group for valuable computing and SINET5 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council; Austrian Science Fund under Grant No. P 26794-N20; the National Natural Science Foundation of China under Contracts No. 10575109, No. 10775142, No. 10875115, No. 11175187, No. 11475187, No. 11521505 and No. 11575017; the Chinese Academy of Science Center for Excellence in Particle Physics; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; the WCU program of the Ministry of Education, National Research Foundation (NRF) of Korea Grants No. 2011-0029457, No. 2012-0008143, No. 2014R1A2A2A01005286, No. 2014R1A2A2A01002734, No. 2015R1A2A2A01003280, No. 2015H1A2A1033649, No. 2016R1D1A1B01010135, No. 2016K1A3A7A09005603, No. 2016K1A3A7A09005604, No. 2016R1D1A1B02012900, No. 2016K1A3A7A09005606, No. NRF-2013K1A3A7A06056592; the Brain Korea 21-Plus program, Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project and the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Education and Science of the Russian Federation and the Russian Foundation for Basic Research; the Slovenian Research Agency; Ikerbasque, Basque Foundation for Science and MINECO (Juan de la Cierva), Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the U.S. Department of Energy and the National Science Foundation. Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = sep,

day = "1",

doi = "10.1103/PhysRevD.96.051102",

language = "English",

volume = "96",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "5",

}

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, YJ, 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

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, Y. J.

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.

N1 - Funding Information: We thank the KEKB group for the excellent operation of the accelerator; the KEK cryogenics group for the efficient operation of the solenoid; and the KEK computer group, the National Institute of Informatics, and the PNNL/EMSL computing group for valuable computing and SINET5 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council; Austrian Science Fund under Grant No. P 26794-N20; the National Natural Science Foundation of China under Contracts No. 10575109, No. 10775142, No. 10875115, No. 11175187, No. 11475187, No. 11521505 and No. 11575017; the Chinese Academy of Science Center for Excellence in Particle Physics; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; the WCU program of the Ministry of Education, National Research Foundation (NRF) of Korea Grants No. 2011-0029457, No. 2012-0008143, No. 2014R1A2A2A01005286, No. 2014R1A2A2A01002734, No. 2015R1A2A2A01003280, No. 2015H1A2A1033649, No. 2016R1D1A1B01010135, No. 2016K1A3A7A09005603, No. 2016K1A3A7A09005604, No. 2016R1D1A1B02012900, No. 2016K1A3A7A09005606, No. NRF-2013K1A3A7A06056592; the Brain Korea 21-Plus program, Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project and the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Education and Science of the Russian Federation and the Russian Foundation for Basic Research; the Slovenian Research Agency; Ikerbasque, Basque Foundation for Science and MINECO (Juan de la Cierva), Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the U.S. Department of Energy and the National Science Foundation. Publisher Copyright: © 2017 American Physical Society.

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

AN - SCOPUS:85031086892

SN - 2470-0010

VL - 96

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 051102

ER -

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

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