First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+

T. J. Moon; K. Tanida; Y. Kato; S. K. Kim; I. Adachi; J. K. Ahn; H. Aihara; S. Al Said; D. M. Asner; V. Aulchenko; T. Aushev; R. Ayad; V. Babu; S. Bahinipati; P. Behera; C. Beleño; J. Bennett; M. Bessner; B. Bhuyan; T. Bilka; J. Biswal; G. Bonvicini; A. Bozek; M. Bračko; T. E. Browder; M. Campajola; L. Cao; D. Červenkov; M. C. Chang; P. Chang; A. Chen; B. G. Cheon; K. Chilikin; K. Cho; S. K. Choi; Y. Choi; S. Choudhury; D. Cinabro; S. Cunliffe; N. Dash; G. De Nardo; F. Di Capua; Z. DoleŽal; T. V. Dong; D. Dossett; S. Dubey; S. Eidelman; D. Epifanov; T. Ferber; B. G. Fulsom; R. Garg; V. Gaur; N. Gabyshev; A. Garmash; A. Giri; P. Goldenzweig; B. Golob; C. Hadjivasiliou; O. Hartbrich; K. Hayasaka; H. Hayashii; M. T. Hedges; W. S. Hou; C. L. Hsu; K. Inami; G. Inguglia; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; W. W. Jacobs; S. Jia; Y. Jin; K. K. Joo; K. H. Kang; G. Karyan; T. Kawasaki; H. Kichimi; C. Kiesling; B. H. Kim; D. Y. Kim; K. T. Kim; S. H. Kim; Y. J. Kim; Y. K. Kim; T. D. Kimmel; K. Kinoshita; P. Kodyš; S. Korpar; D. Kotchetkov; P. KriŽan; R. Kroeger; P. Krokovny; T. Kuhr; R. Kumar; K. Kumara; A. Kuzmin; Y. J. Kwon; I. S. Lee; J. Y. Lee; S. C. Lee; L. K. Li; Y. B. Li; L. Li Gioi; J. Libby; Z. Liptak; D. Liventsev; T. Luo; C. Macqueen; M. Masuda; T. Matsuda; D. Matvienko; M. Merola; K. Miyabayashi; H. Miyata; R. Mizuk; G. B. Mohanty; S. Mohanty; T. Mori; R. Mussa; T. Nakano; M. Nakao; Z. Natkaniec; A. Natochii; M. Nayak; M. Niiyama; N. K. Nisar; S. Nishida; K. Ogawa; S. Ogawa; H. Ono; P. Pakhlov; G. Pakhlova; S. Pardi; H. Park; S. H. Park; S. Patra; S. Paul; T. K. Pedlar; R. Pestotnik; L. E. Piilonen; T. Podobnik; V. Popov; E. Prencipe; M. T. Prim; M. Ritter; N. Rout; G. Russo; D. Sahoo; Y. Sakai; S. Sandilya; A. Sangal; L. Santelj; V. Savinov; G. Schnell; J. Schueler; C. Schwanda; R. Seidl; Y. Seino; K. Senyo; M. E. Sevior; M. Shapkin; C. P. Shen; J. G. Shiu; B. Shwartz; E. Solovieva; M. Starič; Z. S. Stottler; M. Sumihama; K. Sumisawa; T. Sumiyoshi; W. Sutcliffe; M. Takizawa; U. Tamponi; F. Tenchini; K. Trabelsi; M. Uchida; S. Uehara; T. Uglov; Y. Unno; S. Uno; P. Urquijo; S. E. Vahsen; R. Van Tonder; G. Varner; A. Vinokurova; V. Vorobyev; A. Vossen; C. H. Wang; E. Wang; M. Z. Wang; P. Wang; S. Wehle; J. Wiechczynski; X. Xu; B. D. Yabsley; S. B. Yang; H. Ye; J. Yelton; J. H. Yin; C. Z. Yuan; Z. P. Zhang; V. Zhilich; V. Zhukova; V. Zhulanov

doi:10.1103/PhysRevD.103.L111101

First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+

T. J. Moon, K. Tanida, Y. Kato, S. K. Kim, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, C. Beleño, J. Bennett, M. Bessner, B. Bhuyan, T. BilkaJ. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, M. C. Chang, P. Chang, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, G. De Nardo, F. Di Capua, Z. DoleŽal, T. V. Dong, D. Dossett, S. Dubey, S. Eidelman, D. Epifanov, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, C. Hadjivasiliou, O. Hartbrich, K. Hayasaka, H. Hayashii, M. T. Hedges, W. S. Hou, C. L. Hsu, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, K. K. Joo, K. H. Kang, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, B. H. Kim, D. Y. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, Y. K. Kim, T. D. Kimmel, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kumar, K. Kumara, A. Kuzmin, Y. J. Kwon, I. S. Lee, J. Y. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, Z. Liptak, D. Liventsev, T. Luo, C. Macqueen, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, T. Mori, R. Mussa, T. Nakano, M. Nakao, Z. Natkaniec, A. Natochii, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, K. Ogawa, S. Ogawa, H. Ono, P. Pakhlov, G. Pakhlova, S. Pardi, H. Park, S. H. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, M. Ritter, N. Rout, G. Russo, D. Sahoo, Y. Sakai, S. Sandilya, A. Sangal, L. Santelj, V. Savinov, G. Schnell, J. Schueler, C. Schwanda, R. Seidl, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, B. Shwartz, E. Solovieva, M. Starič, Z. S. Stottler, M. Sumihama, K. Sumisawa, T. Sumiyoshi, W. Sutcliffe, M. Takizawa, U. Tamponi, F. Tenchini, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, S. E. Vahsen, R. Van Tonder, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, C. H. Wang, E. Wang, M. Z. Wang, P. Wang, S. Wehle, J. Wiechczynski, X. Xu, B. D. Yabsley, S. B. Yang, H. Ye, J. Yelton, J. H. Yin, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov

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

19 Scopus citations

Abstract

We report results from a study of the spin and parity of Ξc(2970)+ using a 980 fb-1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e- collider. The decay angle distributions in the chain Ξc(2970)+→Ξc(2645)0π+→Ξc+π-π+ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the Ξc(2970)+ spin J=1/2 over 3/2 or 5/2, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of Ξc(2970)+ decay branching fractions R=B[Ξc(2970)+→Ξc(2645)0π+]/B[Ξc(2970)+→Ξc′0π+]=1.67±0.29(stat)-0.09+0.15(syst)±0.25(IS), where the last uncertainty is due to possible isospin-symmetry-breaking effects. This R value favors the spin-parity JP=1/2+ with the spin of the light-quark degrees of freedom sl=0. This is the first determination of the spin and parity of a charmed-strange baryon.

Original language	English
Article number	L111101
Journal	Physical Review D
Volume	103
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.103.L111101
State	Published - 1 Jun 2021

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10.1103/PhysRevD.103.L111101

Cite this

Moon, T. J., Tanida, K., Kato, Y., Kim, S. K., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Beleño, C., Bennett, J., Bessner, M., Bhuyan, B., ... Zhulanov, V. (2021). First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+. Physical Review D, 103(11), Article L111101. https://doi.org/10.1103/PhysRevD.103.L111101

@article{076313569da54b458efbea0099651ec0,

title = "First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+",

abstract = "We report results from a study of the spin and parity of Ξc(2970)+ using a 980 fb-1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e- collider. The decay angle distributions in the chain Ξc(2970)+→Ξc(2645)0π+→Ξc+π-π+ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the Ξc(2970)+ spin J=1/2 over 3/2 or 5/2, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of Ξc(2970)+ decay branching fractions R=B[Ξc(2970)+→Ξc(2645)0π+]/B[Ξc(2970)+→Ξc′0π+]=1.67±0.29(stat)-0.09+0.15(syst)±0.25(IS), where the last uncertainty is due to possible isospin-symmetry-breaking effects. This R value favors the spin-parity JP=1/2+ with the spin of the light-quark degrees of freedom sl=0. This is the first determination of the spin and parity of a charmed-strange baryon.",

author = "Moon, {T. J.} and K. Tanida and Y. Kato and Kim, {S. K.} and I. Adachi and Ahn, {J. K.} and H. Aihara and {Al Said}, S. and Asner, {D. M.} and V. Aulchenko and T. Aushev and R. Ayad and V. Babu and S. Bahinipati and P. Behera and C. Bele{\~n}o and J. Bennett and M. Bessner and B. Bhuyan and T. Bilka and J. Biswal and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and M. Campajola and L. Cao and D. {\v C}ervenkov and Chang, {M. C.} and P. Chang and A. Chen and Cheon, {B. G.} and K. Chilikin and K. Cho and Choi, {S. K.} and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and N. Dash and {De Nardo}, G. and {Di Capua}, F. and Z. Dole{\v Z}al and Dong, {T. V.} and D. Dossett and S. Dubey and S. Eidelman and D. Epifanov and T. Ferber and Fulsom, {B. G.} and R. Garg and V. Gaur and N. Gabyshev and A. Garmash and A. Giri and P. Goldenzweig and B. Golob and C. Hadjivasiliou and O. Hartbrich and K. Hayasaka and H. Hayashii and Hedges, {M. T.} and Hou, {W. S.} and Hsu, {C. L.} and K. Inami and G. Inguglia and A. Ishikawa and R. Itoh and M. Iwasaki and Y. Iwasaki and Jacobs, {W. W.} and S. Jia and Y. Jin and Joo, {K. K.} and Kang, {K. H.} and G. Karyan and T. Kawasaki and H. Kichimi and C. Kiesling and Kim, {B. H.} and Kim, {D. Y.} and Kim, {K. T.} and Kim, {S. H.} and Kim, {Y. J.} and Kim, {Y. K.} and Kimmel, {T. D.} and K. Kinoshita and P. Kody{\v s} and S. Korpar and D. Kotchetkov and P. Kri{\v Z}an and R. Kroeger and P. Krokovny and T. Kuhr and R. Kumar and K. Kumara and A. Kuzmin and Kwon, {Y. J.} and Lee, {I. S.} and Lee, {J. Y.} and Lee, {S. C.} and Li, {L. K.} and Li, {Y. B.} and {Li Gioi}, L. and J. Libby and Z. Liptak and D. Liventsev and T. Luo and C. Macqueen and M. Masuda and T. Matsuda and D. Matvienko and M. Merola and K. Miyabayashi and H. Miyata and R. Mizuk and Mohanty, {G. B.} and S. Mohanty and T. Mori and R. Mussa and T. Nakano and M. Nakao and Z. Natkaniec and A. Natochii and M. Nayak and M. Niiyama and Nisar, {N. K.} and S. Nishida and K. Ogawa and S. Ogawa and H. Ono and P. Pakhlov and G. Pakhlova and S. Pardi and H. Park and Park, {S. H.} and S. Patra and S. Paul and Pedlar, {T. K.} and R. Pestotnik and Piilonen, {L. E.} and T. Podobnik and V. Popov and E. Prencipe and Prim, {M. T.} and M. Ritter and N. Rout and G. Russo and D. Sahoo and Y. Sakai and S. Sandilya and A. Sangal and L. Santelj and V. Savinov and G. Schnell and J. Schueler and C. Schwanda and R. Seidl and Y. Seino and K. Senyo and Sevior, {M. E.} and M. Shapkin and Shen, {C. P.} and Shiu, {J. G.} and B. Shwartz and E. Solovieva and M. Stari{\v c} and Stottler, {Z. S.} and M. Sumihama and K. Sumisawa and T. Sumiyoshi and W. Sutcliffe and M. Takizawa and U. Tamponi and F. Tenchini and K. Trabelsi and M. Uchida and S. Uehara and T. Uglov and Y. Unno and S. Uno and P. Urquijo and Vahsen, {S. E.} and {Van Tonder}, R. and G. Varner and A. Vinokurova and V. Vorobyev and A. Vossen and Wang, {C. H.} and E. Wang and Wang, {M. Z.} and P. Wang and S. Wehle and J. Wiechczynski and X. Xu and Yabsley, {B. D.} and Yang, {S. B.} and H. Ye and J. Yelton and Yin, {J. H.} and Yuan, {C. Z.} and Zhang, {Z. P.} and V. Zhilich and V. Zhukova and V. Zhulanov",

note = "Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.",

year = "2021",

month = jun,

day = "1",

doi = "10.1103/PhysRevD.103.L111101",

language = "English",

volume = "103",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "11",

}

Moon, TJ, Tanida, K, Kato, Y, Kim, SK, Adachi, I, Ahn, JK, Aihara, H, Al Said, S, Asner, DM, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Bahinipati, S, Behera, P, Beleño, C, Bennett, J, Bessner, M, Bhuyan, B, Bilka, T, Biswal, J, Bonvicini, G, Bozek, A, Bračko, M, Browder, TE, Campajola, M, Cao, L, Červenkov, D, Chang, MC, Chang, P, Chen, A, Cheon, BG, Chilikin, K, Cho, K, Choi, SK, Choi, Y, Choudhury, S, Cinabro, D, Cunliffe, S, Dash, N, De Nardo, G, Di Capua, F, DoleŽal, Z, Dong, TV, Dossett, D, Dubey, S, Eidelman, S, Epifanov, D, Ferber, T, Fulsom, BG, Garg, R, Gaur, V, Gabyshev, N, Garmash, A, Giri, A, Goldenzweig, P, Golob, B, Hadjivasiliou, C, Hartbrich, O, Hayasaka, K, Hayashii, H, Hedges, MT, Hou, WS, Hsu, CL, Inami, K, Inguglia, G, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Jacobs, WW, Jia, S, Jin, Y, Joo, KK, Kang, KH, Karyan, G, Kawasaki, T, Kichimi, H, Kiesling, C, Kim, BH, Kim, DY, Kim, KT, Kim, SH, Kim, YJ, Kim, YK, Kimmel, TD, Kinoshita, K, Kodyš, P, Korpar, S, Kotchetkov, D, KriŽan, P, Kroeger, R, Krokovny, P, Kuhr, T, Kumar, R, Kumara, K, Kuzmin, A, Kwon, YJ, Lee, IS, Lee, JY, Lee, SC, Li, LK, Li, YB, Li Gioi, L, Libby, J, Liptak, Z, Liventsev, D, Luo, T, Macqueen, C, Masuda, M, Matsuda, T, Matvienko, D, Merola, M, Miyabayashi, K, Miyata, H, Mizuk, R, Mohanty, GB, Mohanty, S, Mori, T, Mussa, R, Nakano, T, Nakao, M, Natkaniec, Z, Natochii, A, Nayak, M, Niiyama, M, Nisar, NK, Nishida, S, Ogawa, K, Ogawa, S, Ono, H, Pakhlov, P, Pakhlova, G, Pardi, S, Park, H, Park, SH, Patra, S, Paul, S, Pedlar, TK, Pestotnik, R, Piilonen, LE, Podobnik, T, Popov, V, Prencipe, E, Prim, MT, Ritter, M, Rout, N, Russo, G, Sahoo, D, Sakai, Y, Sandilya, S, Sangal, A, Santelj, L, Savinov, V, Schnell, G, Schueler, J, Schwanda, C, Seidl, R, Seino, Y, Senyo, K, Sevior, ME, Shapkin, M, Shen, CP, Shiu, JG, Shwartz, B, Solovieva, E, Starič, M, Stottler, ZS, Sumihama, M, Sumisawa, K, Sumiyoshi, T, Sutcliffe, W, Takizawa, M, Tamponi, U, Tenchini, F, Trabelsi, K, Uchida, M, Uehara, S, Uglov, T, Unno, Y, Uno, S, Urquijo, P, Vahsen, SE, Van Tonder, R, Varner, G, Vinokurova, A, Vorobyev, V, Vossen, A, Wang, CH, Wang, E, Wang, MZ, Wang, P, Wehle, S, Wiechczynski, J, Xu, X, Yabsley, BD, Yang, SB, Ye, H, Yelton, J, Yin, JH, Yuan, CZ, Zhang, ZP, Zhilich, V, Zhukova, V & Zhulanov, V 2021, 'First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+', Physical Review D, vol. 103, no. 11, L111101. https://doi.org/10.1103/PhysRevD.103.L111101

TY - JOUR

T1 - First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+

AU - Moon, T. J.

AU - Tanida, K.

AU - Kato, Y.

AU - Kim, S. K.

AU - Adachi, I.

AU - Ahn, J. K.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Bahinipati, S.

AU - Behera, P.

AU - Beleño, C.

AU - Bennett, J.

AU - Bessner, M.

AU - Bhuyan, B.

AU - Bilka, T.

AU - Biswal, J.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Campajola, M.

AU - Cao, L.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chang, P.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Dash, N.

AU - De Nardo, G.

AU - Di Capua, F.

AU - DoleŽal, Z.

AU - Dong, T. V.

AU - Dossett, D.

AU - Dubey, S.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Ferber, T.

AU - Fulsom, B. G.

AU - Garg, R.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Giri, A.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Hadjivasiliou, C.

AU - Hartbrich, O.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hedges, M. T.

AU - Hou, W. S.

AU - Hsu, C. L.

AU - Inami, K.

AU - Inguglia, G.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Jacobs, W. W.

AU - Jia, S.

AU - Jin, Y.

AU - Joo, K. K.

AU - Kang, K. H.

AU - Karyan, G.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kiesling, C.

AU - Kim, B. H.

AU - Kim, D. Y.

AU - Kim, K. T.

AU - Kim, S. H.

AU - Kim, Y. J.

AU - Kim, Y. K.

AU - Kimmel, T. D.

AU - Kinoshita, K.

AU - Kodyš, P.

AU - Korpar, S.

AU - Kotchetkov, D.

AU - KriŽan, P.

AU - Kroeger, R.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kumar, R.

AU - Kumara, K.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lee, I. S.

AU - Lee, J. Y.

AU - Lee, S. C.

AU - Li, L. K.

AU - Li, Y. B.

AU - Li Gioi, L.

AU - Libby, J.

AU - Liptak, Z.

AU - Liventsev, D.

AU - Luo, T.

AU - Macqueen, C.

AU - Masuda, M.

AU - Matsuda, T.

AU - Matvienko, D.

AU - Merola, M.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Mizuk, R.

AU - Mohanty, G. B.

AU - Mohanty, S.

AU - Mori, T.

AU - Mussa, R.

AU - Nakano, T.

AU - Nakao, M.

AU - Natkaniec, Z.

AU - Natochii, A.

AU - Nayak, M.

AU - Niiyama, M.

AU - Nisar, N. K.

AU - Nishida, S.

AU - Ogawa, K.

AU - Ogawa, S.

AU - Ono, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Pardi, S.

AU - Park, H.

AU - Park, S. H.

AU - Patra, S.

AU - Paul, S.

AU - Pedlar, T. K.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Podobnik, T.

AU - Popov, V.

AU - Prencipe, E.

AU - Prim, M. T.

AU - Ritter, M.

AU - Rout, N.

AU - Russo, G.

AU - Sahoo, D.

AU - Sakai, Y.

AU - Sandilya, S.

AU - Sangal, A.

AU - Santelj, L.

AU - Savinov, V.

AU - Schnell, G.

AU - Schueler, J.

AU - Schwanda, C.

AU - Seidl, R.

AU - Seino, Y.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Solovieva, E.

AU - Starič, M.

AU - Stottler, Z. S.

AU - Sumihama, M.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Sutcliffe, W.

AU - Takizawa, M.

AU - Tamponi, U.

AU - Tenchini, F.

AU - Trabelsi, K.

AU - Uchida, M.

AU - Uehara, S.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Vahsen, S. E.

AU - Van Tonder, R.

AU - Varner, G.

AU - Vinokurova, A.

AU - Vorobyev, V.

AU - Vossen, A.

AU - Wang, C. H.

AU - Wang, E.

AU - Wang, M. Z.

AU - Wang, P.

AU - Wehle, S.

AU - Wiechczynski, J.

AU - Xu, X.

AU - Yabsley, B. D.

AU - Yang, S. B.

AU - Ye, H.

AU - Yelton, J.

AU - Yin, J. H.

AU - Yuan, C. Z.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhukova, V.

AU - Zhulanov, V.

N1 - Publisher Copyright: © 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

PY - 2021/6/1

Y1 - 2021/6/1

N2 - We report results from a study of the spin and parity of Ξc(2970)+ using a 980 fb-1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e- collider. The decay angle distributions in the chain Ξc(2970)+→Ξc(2645)0π+→Ξc+π-π+ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the Ξc(2970)+ spin J=1/2 over 3/2 or 5/2, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of Ξc(2970)+ decay branching fractions R=B[Ξc(2970)+→Ξc(2645)0π+]/B[Ξc(2970)+→Ξc′0π+]=1.67±0.29(stat)-0.09+0.15(syst)±0.25(IS), where the last uncertainty is due to possible isospin-symmetry-breaking effects. This R value favors the spin-parity JP=1/2+ with the spin of the light-quark degrees of freedom sl=0. This is the first determination of the spin and parity of a charmed-strange baryon.

AB - We report results from a study of the spin and parity of Ξc(2970)+ using a 980 fb-1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e- collider. The decay angle distributions in the chain Ξc(2970)+→Ξc(2645)0π+→Ξc+π-π+ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the Ξc(2970)+ spin J=1/2 over 3/2 or 5/2, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of Ξc(2970)+ decay branching fractions R=B[Ξc(2970)+→Ξc(2645)0π+]/B[Ξc(2970)+→Ξc′0π+]=1.67±0.29(stat)-0.09+0.15(syst)±0.25(IS), where the last uncertainty is due to possible isospin-symmetry-breaking effects. This R value favors the spin-parity JP=1/2+ with the spin of the light-quark degrees of freedom sl=0. This is the first determination of the spin and parity of a charmed-strange baryon.

UR - http://www.scopus.com/inward/record.url?scp=85108519545&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.103.L111101

DO - 10.1103/PhysRevD.103.L111101

M3 - Article

AN - SCOPUS:85108519545

SN - 2470-0010

VL - 103

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - L111101

ER -

First determination of the spin and parity of the charmed-strange baryon Ξc (2970)+

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