Observation of charmed strange meson pair production in ϒ (2S) decays and in e+e- annihilation at s =10.52 GeV

B. S. Gao; W. J. Zhu; X. L. Wang; I. Adachi; H. Aihara; D. M. Asner; V. Aulchenko; T. Aushev; R. Ayad; V. Babu; Sw Banerjee; M. Bauer; P. Behera; K. Belous; J. Bennett; M. Bessner; V. Bhardwaj; T. Bilka; D. Biswas; A. Bobrov; D. Bodrov; A. Bondar; A. Bozek; M. Bračko; P. Branchini; T. E. Browder; A. Budano; D. Červenkov; M. C. Chang; P. Chang; V. Chekelian; B. G. Cheon; K. Chilikin; H. E. Cho; K. Cho; S. K. Choi; Y. Choi; S. Choudhury; D. Cinabro; G. De Nardo; G. De Pietro; R. Dhamija; F. Di Capua; J. Dingfelder; Z. DoleŽal; T. V. Dong; P. Ecker; T. Ferber; D. Ferlewicz; B. G. Fulsom; V. Gaur; A. Giri; E. Graziani; T. Gu; K. Gudkova; C. Hadjivasiliou; K. Hayasaka; H. Hayashii; S. Hazra; M. T. Hedges; D. Herrmann; W. S. Hou; C. L. Hsu; T. Iijima; K. Inami; N. Ipsita; A. Ishikawa; R. Itoh; M. Iwasaki; W. W. Jacobs; E. J. Jang; S. Jia; Y. Jin; K. K. Joo; T. Kawasaki; C. Kiesling; C. H. Kim; D. Y. Kim; K. H. Kim; Y. K. Kim; K. Kinoshita; P. Kodyš; T. Konno; A. Korobov; S. Korpar; P. KriŽan; M. Kumar; R. Kumar; K. Kumara; A. Kuzmin; Y. J. Kwon; Y. T. Lai; S. C. Lee; D. Levit; P. Lewis; L. K. Li; L. Li Gioi; J. Libby; K. Lieret; D. Liventsev; Y. Ma; M. Masuda; T. Matsuda; S. K. Maurya; F. Meier; M. Merola; R. Mizuk; I. Nakamura; M. Nakao; D. Narwal; A. Natochii; L. Nayak; M. Niiyama; N. K. Nisar; S. Nishida; S. Ogawa; P. Pakhlov; G. Pakhlova; S. Pardi; J. Park; S. Patra; S. Paul; T. K. Pedlar; R. Pestotnik; L. E. Piilonen; T. Podobnik; E. Prencipe; M. T. Prim; G. Russo; S. Sandilya; V. Savinov; G. Schnell; C. Schwanda; Y. Seino; K. Senyo; M. E. Sevior; W. Shan; C. Sharma; J. G. Shiu; B. Shwartz; E. Solovieva; M. Starič; Z. S. Stottler; M. Sumihama; K. Tanida; F. Tenchini; M. Uchida; T. Uglov; Y. Unno; S. Uno; S. E. Vahsen; K. E. Varvell; D. Wang; E. Wang; M. Z. Wang; S. Watanuki; E. Won; X. Xu; B. D. Yabsley; W. Yan; S. B. Yang; J. H. Yin; Y. Yook; C. Z. Yuan; L. Yuan; V. Zhilich; V. Zhukova

doi:10.1103/PhysRevD.108.112015

Observation of charmed strange meson pair production in ϒ (2S) decays and in e+e- annihilation at s =10.52 GeV

B. S. Gao, W. J. Zhu, X. L. Wang, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, Sw Banerjee, M. Bauer, P. Behera, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, T. Bilka, D. Biswas, A. BobrovD. Bodrov, A. Bondar, A. Bozek, M. Bračko, P. Branchini, T. E. Browder, A. Budano, D. Červenkov, M. C. Chang, P. Chang, V. Chekelian, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, G. De Nardo, G. De Pietro, R. Dhamija, F. Di Capua, J. Dingfelder, Z. DoleŽal, T. V. Dong, P. Ecker, T. Ferber, D. Ferlewicz, B. G. Fulsom, V. Gaur, A. Giri, E. Graziani, T. Gu, K. Gudkova, C. Hadjivasiliou, K. Hayasaka, H. Hayashii, S. Hazra, M. T. Hedges, D. Herrmann, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, E. J. Jang, S. Jia, Y. Jin, K. K. Joo, T. Kawasaki, C. Kiesling, C. H. Kim, D. Y. Kim, K. H. Kim, Y. K. Kim, K. Kinoshita, P. Kodyš, T. Konno, A. Korobov, S. Korpar, P. KriŽan, M. Kumar, R. Kumar, K. Kumara, A. Kuzmin, Y. J. Kwon, Y. T. Lai, S. C. Lee, D. Levit, P. Lewis, L. K. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, Y. Ma, M. Masuda, T. Matsuda, S. K. Maurya, F. Meier, M. Merola, R. Mizuk, I. Nakamura, M. Nakao, D. Narwal, A. Natochii, L. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, P. Pakhlov, G. Pakhlova, S. Pardi, J. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, E. Prencipe, M. T. Prim, G. Russo, S. Sandilya, V. Savinov, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, W. Shan, C. Sharma, J. G. Shiu, B. Shwartz, E. Solovieva, M. Starič, Z. S. Stottler, M. Sumihama, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, Y. Unno, S. Uno, S. E. Vahsen, K. E. Varvell, D. Wang, E. Wang, M. Z. Wang, S. Watanuki, E. Won, X. Xu, B. D. Yabsley, W. Yan, S. B. Yang, J. H. Yin, Y. Yook, C. Z. Yuan, L. Yuan, V. Zhilich, V. Zhukova

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

Abstract

We observe the process ϒ(2S)→Ds(∗)+DsJ- and continuum production e+e-→Ds(∗)+DsJ- at s=10.52 GeV (and their charge conjugates) using the data samples collected by the Belle detector at KEKB, where DsJ- is Ds1(2536)- or Ds2∗(2573)-. Both DsJ- states are identified through their decay into K̄D¯(∗). We measure the products of branching fractions B(ϒ(2S)→Ds(∗)+DsJ-)B(DsJ-→K̄D¯(∗)) and the Born cross sections σBorn(e+e-→Ds(∗)+DsJ-)B(DsJ-→K̄D¯(∗)), and then compare the ratios R1B(ϒ(2S)→Ds(∗)+DsJ-)/B(ϒ(2S)→μ+μ-) for ϒ(2S) decays and R2σBorn(e+e-→Ds(∗)+DsJ-)/σBorn(e+e-→μ+μ-) for continuum production. We obtain R1/R2=9.7±2.3±1.1, 6.8±2.1±0.8, 10.2±3.3±2.5, and 3.4±2.1±0.8 for the Ds+Ds1(2536)-, Ds∗+Ds1(2536)-, Ds+Ds2∗(2573)-, and Ds∗+Ds2∗(2573)- final states in the DsJ-→K-D¯(∗)0 modes, respectively. The measured R1/R2 values indicate that the strong decay dominates in ϒ(2S)→Ds(∗)+DsJ- processes. We also measure the ratios of branching fractions B(Ds1(2536)-→KS0D∗(2010)-)/B(Ds1(2536)-→K-D∗(2007)0)=0.48±0.07±0.02 and B(Ds2∗(2573)-→KS0D-)/B(Ds2∗(2573)-→K-D0)=0.49±0.10±0.02, which are consistent with isospin symmetry. The second ratio is the first measurement of this quantity. Here, the first uncertainties are statistical and the second are systematic.

Original language	English
Article number	112015
Journal	Physical Review D
Volume	108
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.108.112015
Publication status	Published - 2023 Dec 1

Bibliographical note

Publisher Copyright:
© 2023 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.

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.108.112015

Cite this

Gao, B. S., Zhu, W. J., Wang, X. L., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Banerjee, S., Bauer, M., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bilka, T., Biswas, D., ... Zhukova, V. (2023). Observation of charmed strange meson pair production in ϒ (2S) decays and in e+e- annihilation at s =10.52 GeV. Physical Review D, 108(11), Article 112015. https://doi.org/10.1103/PhysRevD.108.112015

Gao, BS, Zhu, WJ, Wang, XL, Adachi, I, Aihara, H, Asner, DM, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Banerjee, S, Bauer, M, Behera, P, Belous, K, Bennett, J, Bessner, M, Bhardwaj, V, Bilka, T, Biswas, D, Bobrov, A, Bodrov, D, Bondar, A, Bozek, A, Bračko, M, Branchini, P, Browder, TE, Budano, A, Červenkov, D, Chang, MC, Chang, P, Chekelian, V, Cheon, BG, Chilikin, K, Cho, HE, Cho, K, Choi, SK, Choi, Y, Choudhury, S, Cinabro, D, De Nardo, G, De Pietro, G, Dhamija, R, Di Capua, F, Dingfelder, J, DoleŽal, Z, Dong, TV, Ecker, P, Ferber, T, Ferlewicz, D, Fulsom, BG, Gaur, V, Giri, A, Graziani, E, Gu, T, Gudkova, K, Hadjivasiliou, C, Hayasaka, K, Hayashii, H, Hazra, S, Hedges, MT, Herrmann, D, Hou, WS, Hsu, CL, Iijima, T, Inami, K, Ipsita, N, Ishikawa, A, Itoh, R, Iwasaki, M, Jacobs, WW, Jang, EJ, Jia, S, Jin, Y, Joo, KK, Kawasaki, T, Kiesling, C, Kim, CH, Kim, DY, Kim, KH, Kim, YK, Kinoshita, K, Kodyš, P, Konno, T, Korobov, A, Korpar, S, KriŽan, P, Kumar, M, Kumar, R, Kumara, K, Kuzmin, A, Kwon, YJ, Lai, YT, Lee, SC, Levit, D, Lewis, P, Li, LK, Li Gioi, L, Libby, J, Lieret, K, Liventsev, D, Ma, Y, Masuda, M, Matsuda, T, Maurya, SK, Meier, F, Merola, M, Mizuk, R, Nakamura, I, Nakao, M, Narwal, D, Natochii, A, Nayak, L, Niiyama, M, Nisar, NK, Nishida, S, Ogawa, S, Pakhlov, P, Pakhlova, G, Pardi, S, Park, J, Patra, S, Paul, S, Pedlar, TK, Pestotnik, R, Piilonen, LE, Podobnik, T, Prencipe, E, Prim, MT, Russo, G, Sandilya, S, Savinov, V, Schnell, G, Schwanda, C, Seino, Y, Senyo, K, Sevior, ME, Shan, W, Sharma, C, Shiu, JG, Shwartz, B, Solovieva, E, Starič, M, Stottler, ZS, Sumihama, M, Tanida, K, Tenchini, F, Uchida, M, Uglov, T, Unno, Y, Uno, S, Vahsen, SE, Varvell, KE, Wang, D, Wang, E, Wang, MZ, Watanuki, S, Won, E, Xu, X, Yabsley, BD, Yan, W, Yang, SB, Yin, JH, Yook, Y, Yuan, CZ, Yuan, L, Zhilich, V & Zhukova, V 2023, 'Observation of charmed strange meson pair production in ϒ (2S) decays and in e+e- annihilation at s =10.52 GeV', Physical Review D, vol. 108, no. 11, 112015. https://doi.org/10.1103/PhysRevD.108.112015

@article{d5f60f83a053473f8e11ea6caede9b9a,

title = "Observation of charmed strange meson pair production in ϒ (2S) decays and in e+e- annihilation at s =10.52 GeV",

abstract = "We observe the process ϒ(2S)→Ds(∗)+DsJ- and continuum production e+e-→Ds(∗)+DsJ- at s=10.52 GeV (and their charge conjugates) using the data samples collected by the Belle detector at KEKB, where DsJ- is Ds1(2536)- or Ds2∗(2573)-. Both DsJ- states are identified through their decay into {\=K}D¯(∗). We measure the products of branching fractions B(ϒ(2S)→Ds(∗)+DsJ-)B(DsJ-→{\=K}D¯(∗)) and the Born cross sections σBorn(e+e-→Ds(∗)+DsJ-)B(DsJ-→{\=K}D¯(∗)), and then compare the ratios R1B(ϒ(2S)→Ds(∗)+DsJ-)/B(ϒ(2S)→μ+μ-) for ϒ(2S) decays and R2σBorn(e+e-→Ds(∗)+DsJ-)/σBorn(e+e-→μ+μ-) for continuum production. We obtain R1/R2=9.7±2.3±1.1, 6.8±2.1±0.8, 10.2±3.3±2.5, and 3.4±2.1±0.8 for the Ds+Ds1(2536)-, Ds∗+Ds1(2536)-, Ds+Ds2∗(2573)-, and Ds∗+Ds2∗(2573)- final states in the DsJ-→K-D¯(∗)0 modes, respectively. The measured R1/R2 values indicate that the strong decay dominates in ϒ(2S)→Ds(∗)+DsJ- processes. We also measure the ratios of branching fractions B(Ds1(2536)-→KS0D∗(2010)-)/B(Ds1(2536)-→K-D∗(2007)0)=0.48±0.07±0.02 and B(Ds2∗(2573)-→KS0D-)/B(Ds2∗(2573)-→K-D0)=0.49±0.10±0.02, which are consistent with isospin symmetry. The second ratio is the first measurement of this quantity. Here, the first uncertainties are statistical and the second are systematic.",

author = "Gao, {B. S.} and Zhu, {W. J.} and Wang, {X. L.} and I. Adachi and H. Aihara and Asner, {D. M.} and V. Aulchenko and T. Aushev and R. Ayad and V. Babu and Sw Banerjee and M. Bauer and P. Behera and K. Belous and J. Bennett and M. Bessner and V. Bhardwaj and T. Bilka and D. Biswas and A. Bobrov and D. Bodrov and A. Bondar and A. Bozek and M. Bra{\v c}ko and P. Branchini and Browder, {T. E.} and A. Budano and D. {\v C}ervenkov and Chang, {M. C.} and P. Chang and V. Chekelian and Cheon, {B. G.} and K. Chilikin and Cho, {H. E.} and K. Cho and Choi, {S. K.} and Y. Choi and S. Choudhury and D. Cinabro and {De Nardo}, G. and {De Pietro}, G. and R. Dhamija and {Di Capua}, F. and J. Dingfelder and Z. Dole{\v Z}al and Dong, {T. V.} and P. Ecker and T. Ferber and D. Ferlewicz and Fulsom, {B. G.} and V. Gaur and A. Giri and E. Graziani and T. Gu and K. Gudkova and C. Hadjivasiliou and K. Hayasaka and H. Hayashii and S. Hazra and Hedges, {M. T.} and D. Herrmann and Hou, {W. S.} and Hsu, {C. L.} and T. Iijima and K. Inami and N. Ipsita and A. Ishikawa and R. Itoh and M. Iwasaki and Jacobs, {W. W.} and Jang, {E. J.} and S. Jia and Y. Jin and Joo, {K. K.} and T. Kawasaki and C. Kiesling and Kim, {C. H.} and Kim, {D. Y.} and Kim, {K. H.} and Kim, {Y. K.} and K. Kinoshita and P. Kody{\v s} and T. Konno and A. Korobov and S. Korpar and P. Kri{\v Z}an and M. Kumar and R. Kumar and K. Kumara and A. Kuzmin and Kwon, {Y. J.} and Lai, {Y. T.} and Lee, {S. C.} and D. Levit and P. Lewis and Li, {L. K.} and {Li Gioi}, L. and J. Libby and K. Lieret and D. Liventsev and Y. Ma and M. Masuda and T. Matsuda and Maurya, {S. K.} and F. Meier and M. Merola and R. Mizuk and I. Nakamura and M. Nakao and D. Narwal and A. Natochii and L. Nayak and M. Niiyama and Nisar, {N. K.} and S. Nishida and S. Ogawa and P. Pakhlov and G. Pakhlova and S. Pardi and J. Park and S. Patra and S. Paul and Pedlar, {T. K.} and R. Pestotnik and Piilonen, {L. E.} and T. Podobnik and E. Prencipe and Prim, {M. T.} and G. Russo and S. Sandilya and V. Savinov and G. Schnell and C. Schwanda and Y. Seino and K. Senyo and Sevior, {M. E.} and W. Shan and C. Sharma and Shiu, {J. G.} and B. Shwartz and E. Solovieva and M. Stari{\v c} and Stottler, {Z. S.} and M. Sumihama and K. Tanida and F. Tenchini and M. Uchida and T. Uglov and Y. Unno and S. Uno and Vahsen, {S. E.} and Varvell, {K. E.} and D. Wang and E. Wang and Wang, {M. Z.} and S. Watanuki and E. Won and X. Xu and Yabsley, {B. D.} and W. Yan and Yang, {S. B.} and Yin, {J. H.} and Y. Yook and Yuan, {C. Z.} and L. Yuan and V. Zhilich and V. Zhukova",

note = "Publisher Copyright: {\textcopyright} 2023 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 = "2023",

month = dec,

day = "1",

doi = "10.1103/PhysRevD.108.112015",

language = "English",

volume = "108",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "11",

}

TY - JOUR

T1 - Observation of charmed strange meson pair production in ϒ (2S) decays and in e+e- annihilation at s =10.52 GeV

AU - Gao, B. S.

AU - Zhu, W. J.

AU - Wang, X. L.

AU - Adachi, I.

AU - Aihara, H.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Banerjee, Sw

AU - Bauer, M.

AU - Behera, P.

AU - Belous, K.

AU - Bennett, J.

AU - Bessner, M.

AU - Bhardwaj, V.

AU - Bilka, T.

AU - Biswas, D.

AU - Bobrov, A.

AU - Bodrov, D.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Branchini, P.

AU - Browder, T. E.

AU - Budano, A.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chang, P.

AU - Chekelian, V.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, H. E.

AU - Cho, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - De Nardo, G.

AU - De Pietro, G.

AU - Dhamija, R.

AU - Di Capua, F.

AU - Dingfelder, J.

AU - DoleŽal, Z.

AU - Dong, T. V.

AU - Ecker, P.

AU - Ferber, T.

AU - Ferlewicz, D.

AU - Fulsom, B. G.

AU - Gaur, V.

AU - Giri, A.

AU - Graziani, E.

AU - Gu, T.

AU - Gudkova, K.

AU - Hadjivasiliou, C.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hazra, S.

AU - Hedges, M. T.

AU - Herrmann, D.

AU - Hou, W. S.

AU - Hsu, C. L.

AU - Iijima, T.

AU - Inami, K.

AU - Ipsita, N.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Jacobs, W. W.

AU - Jang, E. J.

AU - Jia, S.

AU - Jin, Y.

AU - Joo, K. K.

AU - Kawasaki, T.

AU - Kiesling, C.

AU - Kim, C. H.

AU - Kim, D. Y.

AU - Kim, K. H.

AU - Kim, Y. K.

AU - Kinoshita, K.

AU - Kodyš, P.

AU - Konno, T.

AU - Korobov, A.

AU - Korpar, S.

AU - KriŽan, P.

AU - Kumar, M.

AU - Kumar, R.

AU - Kumara, K.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lai, Y. T.

AU - Lee, S. C.

AU - Levit, D.

AU - Lewis, P.

AU - Li, L. K.

AU - Li Gioi, L.

AU - Libby, J.

AU - Lieret, K.

AU - Liventsev, D.

AU - Ma, Y.

AU - Masuda, M.

AU - Matsuda, T.

AU - Maurya, S. K.

AU - Meier, F.

AU - Merola, M.

AU - Mizuk, R.

AU - Nakamura, I.

AU - Nakao, M.

AU - Narwal, D.

AU - Natochii, A.

AU - Nayak, L.

AU - Niiyama, M.

AU - Nisar, N. K.

AU - Nishida, S.

AU - Ogawa, S.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Pardi, S.

AU - Park, J.

AU - Patra, S.

AU - Paul, S.

AU - Pedlar, T. K.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Podobnik, T.

AU - Prencipe, E.

AU - Prim, M. T.

AU - Russo, G.

AU - Sandilya, S.

AU - Savinov, V.

AU - Schnell, G.

AU - Schwanda, C.

AU - Seino, Y.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shan, W.

AU - Sharma, C.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Solovieva, E.

AU - Starič, M.

AU - Stottler, Z. S.

AU - Sumihama, M.

AU - Tanida, K.

AU - Tenchini, F.

AU - Uchida, M.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Vahsen, S. E.

AU - Varvell, K. E.

AU - Wang, D.

AU - Wang, E.

AU - Wang, M. Z.

AU - Watanuki, S.

AU - Won, E.

AU - Xu, X.

AU - Yabsley, B. D.

AU - Yan, W.

AU - Yang, S. B.

AU - Yin, J. H.

AU - Yook, Y.

AU - Yuan, C. Z.

AU - Yuan, L.

AU - Zhilich, V.

AU - Zhukova, V.

N1 - Publisher Copyright: © 2023 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 - 2023/12/1

Y1 - 2023/12/1

N2 - We observe the process ϒ(2S)→Ds(∗)+DsJ- and continuum production e+e-→Ds(∗)+DsJ- at s=10.52 GeV (and their charge conjugates) using the data samples collected by the Belle detector at KEKB, where DsJ- is Ds1(2536)- or Ds2∗(2573)-. Both DsJ- states are identified through their decay into K̄D¯(∗). We measure the products of branching fractions B(ϒ(2S)→Ds(∗)+DsJ-)B(DsJ-→K̄D¯(∗)) and the Born cross sections σBorn(e+e-→Ds(∗)+DsJ-)B(DsJ-→K̄D¯(∗)), and then compare the ratios R1B(ϒ(2S)→Ds(∗)+DsJ-)/B(ϒ(2S)→μ+μ-) for ϒ(2S) decays and R2σBorn(e+e-→Ds(∗)+DsJ-)/σBorn(e+e-→μ+μ-) for continuum production. We obtain R1/R2=9.7±2.3±1.1, 6.8±2.1±0.8, 10.2±3.3±2.5, and 3.4±2.1±0.8 for the Ds+Ds1(2536)-, Ds∗+Ds1(2536)-, Ds+Ds2∗(2573)-, and Ds∗+Ds2∗(2573)- final states in the DsJ-→K-D¯(∗)0 modes, respectively. The measured R1/R2 values indicate that the strong decay dominates in ϒ(2S)→Ds(∗)+DsJ- processes. We also measure the ratios of branching fractions B(Ds1(2536)-→KS0D∗(2010)-)/B(Ds1(2536)-→K-D∗(2007)0)=0.48±0.07±0.02 and B(Ds2∗(2573)-→KS0D-)/B(Ds2∗(2573)-→K-D0)=0.49±0.10±0.02, which are consistent with isospin symmetry. The second ratio is the first measurement of this quantity. Here, the first uncertainties are statistical and the second are systematic.

AB - We observe the process ϒ(2S)→Ds(∗)+DsJ- and continuum production e+e-→Ds(∗)+DsJ- at s=10.52 GeV (and their charge conjugates) using the data samples collected by the Belle detector at KEKB, where DsJ- is Ds1(2536)- or Ds2∗(2573)-. Both DsJ- states are identified through their decay into K̄D¯(∗). We measure the products of branching fractions B(ϒ(2S)→Ds(∗)+DsJ-)B(DsJ-→K̄D¯(∗)) and the Born cross sections σBorn(e+e-→Ds(∗)+DsJ-)B(DsJ-→K̄D¯(∗)), and then compare the ratios R1B(ϒ(2S)→Ds(∗)+DsJ-)/B(ϒ(2S)→μ+μ-) for ϒ(2S) decays and R2σBorn(e+e-→Ds(∗)+DsJ-)/σBorn(e+e-→μ+μ-) for continuum production. We obtain R1/R2=9.7±2.3±1.1, 6.8±2.1±0.8, 10.2±3.3±2.5, and 3.4±2.1±0.8 for the Ds+Ds1(2536)-, Ds∗+Ds1(2536)-, Ds+Ds2∗(2573)-, and Ds∗+Ds2∗(2573)- final states in the DsJ-→K-D¯(∗)0 modes, respectively. The measured R1/R2 values indicate that the strong decay dominates in ϒ(2S)→Ds(∗)+DsJ- processes. We also measure the ratios of branching fractions B(Ds1(2536)-→KS0D∗(2010)-)/B(Ds1(2536)-→K-D∗(2007)0)=0.48±0.07±0.02 and B(Ds2∗(2573)-→KS0D-)/B(Ds2∗(2573)-→K-D0)=0.49±0.10±0.02, which are consistent with isospin symmetry. The second ratio is the first measurement of this quantity. Here, the first uncertainties are statistical and the second are systematic.

UR - http://www.scopus.com/inward/record.url?scp=85182383508&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.108.112015

DO - 10.1103/PhysRevD.108.112015

M3 - Article

AN - SCOPUS:85182383508

SN - 2470-0010

VL - 108

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112015

ER -

Observation of charmed strange meson pair production in ϒ (2S) decays and in e+e- annihilation at s =10.52 GeV

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