Measurement of branching fraction and time-dependent CP asymmetry parameters in B0→D*+D*-KS0 decays

J. Dalseno; I. Adachi; H. Aihara; T. Aushev; A. M. Bakich; V. Balagura; A. Bay; U. Bitenc; I. Bizjak; A. Bozek; M. Bračko; T. E. Browder; Y. Chao; A. Chen; B. G. Cheon; R. Chistov; I. S. Cho; Y. Choi; Y. K. Choi; M. Danilov; M. Dash; A. Drutskoy; S. Eidelman; A. Go; H. Ha; K. Hayasaka; M. Hazumi; D. Heffernan; T. Hokuue; H. J. Hyun; K. Inami; A. Ishikawa; H. Ishino; M. Iwasaki; Y. Iwasaki; N. J. Joshi; D. H. Kah; J. H. Kang; P. Kapusta; N. Katayama; H. Kawai; T. Kawasaki; H. Kichimi; H. J. Kim; Y. J. Kim; K. Kinoshita; P. Križan; P. Krokovny; R. Kumar; C. C. Kuo; A. Kuzmin; Y. J. Kwon; J. S. Lee; S. E. Lee; T. Lesiak; J. Li; A. Limosani; S. W. Lin; D. Liventsev; F. Mandl; T. Matsumoto; S. McOnie; T. Medvedeva; W. Mitaroff; H. Miyake; H. Miyata; G. R. Moloney; E. Nakano; M. Nakao; S. Nishida; O. Nitoh; S. Ogawa; T. Ohshima; S. Okuno; Y. Onuki; W. Ostrowicz; H. Ozaki; P. Pakhlov; G. Pakhlova; C. W. Park; H. Park; K. S. Park; R. Pestotnik; L. E. Piilonen; H. Sahoo; Y. Sakai; O. Schneider; J. Schümann; R. Seidl; A. Sekiya; K. Senyo; M. E. Sevior; M. Shapkin; H. Shibuya; J. B. Singh; A. Sokolov; A. Somov; S. Stanič; M. Starič; H. Stoeck; K. Sumisawa; T. Sumiyoshi; F. Takasaki; M. Tanaka; G. N. Taylor; Y. Teramoto; X. C. Tian; T. Tsukamoto; S. Uehara; K. Ueno; T. Uglov; Y. Unno; S. Uno; P. Urquijo; G. Varner; S. Villa; A. Vinokurova; C. C. Wang; C. H. Wang; Y. Watanabe; R. Wedd; E. Won; B. D. Yabsley; A. Yamaguchi; Y. Yamashita; M. Yamauchi; Z. P. Zhang; V. Zhilich; A. Zupanc

doi:10.1103/PhysRevD.76.072004

Measurement of branching fraction and time-dependent CP asymmetry parameters in B0→D+D-KS0 decays

J. Dalseno, I. Adachi, H. Aihara, T. Aushev, A. M. Bakich, V. Balagura, A. Bay, U. Bitenc, I. Bizjak, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, A. Chen, B. G. Cheon, R. Chistov, I. S. Cho, Y. Choi, Y. K. Choi, M. DanilovM. Dash, A. Drutskoy, S. Eidelman, A. Go, H. Ha, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, H. J. Hyun, K. Inami, A. Ishikawa, H. Ishino, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, P. Križan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, J. S. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, D. Liventsev, F. Mandl, T. Matsumoto, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyake, H. Miyata, G. R. Moloney, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schümann, R. Seidl, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Sokolov, A. Somov, S. Stanič, M. Starič, H. Stoeck, K. Sumisawa, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, A. Zupanc

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Abstract

We present a measurement of the branching fraction and time-dependent CP violation parameters for B0→D*+D*-KS0 decays. These results are obtained from a 414fb-1 data sample that contains 449×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fraction, B(B0→D*+D*-KS0)=[3.4±0.4(stat)±0.7(syst)] ×10-3, which is in agreement with the current world average. We also obtain an upper limit on the product branching fraction for a possible two-body decay, B(B0→Ds1+(2536)D*-)B(Ds1+(2536)→D*+KS0)<7. 1×10-4 (90% CL). In the traditional 2-parameter time-dependent CP analysis, we measure the CP violation parameters, ACP=-0.01-0.28+0.28(stat) ±0.09(syst), Dsin 2 1=0.06-0.44+0.45(stat)±0.06(syst). No evidence for either mixing-induced or direct CP violation is found. In a 3-parameter fit sensitive to cos 2 1 performed in the half-Dalitz spaces, s-≤s+ and s->s+, where s± m2(D*±KS0), we extract the CP violation parameters, Jc/J0=0.60-0.28+0.25(stat)±0.08(syst), 2Js1/J0sin 2 1=-0.17-0.42+0.42(stat)±0.09(syst), 2Js2/J0cos 2 1=-0.23-0.41+0.43(stat) ±0.13(syst). A large value of Jc/J0 would indicate a significant resonant contribution from a broad unknown Ds**+ state. Although the sign of the factor, 2Js2/J0, can be deduced from theory, no conclusion can be drawn regarding the sign of cos 2 1 given the errors.

Original language	English
Article number	072004
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	76
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.76.072004
State	Published - 15 Oct 2007

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10.1103/PhysRevD.76.072004

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Dalseno, J., Adachi, I., Aihara, H., Aushev, T., Bakich, A. M., Balagura, V., Bay, A., Bitenc, U., Bizjak, I., Bozek, A., Bračko, M., Browder, T. E., Chao, Y., Chen, A., Cheon, B. G., Chistov, R., Cho, I. S., Choi, Y., Choi, Y. K., ... Zupanc, A. (2007). Measurement of branching fraction and time-dependent CP asymmetry parameters in B0→D*+D*-KS0 decays. Physical Review D - Particles, Fields, Gravitation and Cosmology, 76(7), Article 072004. https://doi.org/10.1103/PhysRevD.76.072004

@article{934ea6541ea242c1837230e64c22913f,

title = "Measurement of branching fraction and time-dependent CP asymmetry parameters in B0→D*+D*-KS0 decays",

abstract = "We present a measurement of the branching fraction and time-dependent CP violation parameters for B0→D*+D*-KS0 decays. These results are obtained from a 414fb-1 data sample that contains 449×106 B{\=B} pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fraction, B(B0→D*+D*-KS0)=[3.4±0.4(stat)±0.7(syst)] ×10-3, which is in agreement with the current world average. We also obtain an upper limit on the product branching fraction for a possible two-body decay, B(B0→Ds1+(2536)D*-)B(Ds1+(2536)→D*+KS0)<7. 1×10-4 (90% CL). In the traditional 2-parameter time-dependent CP analysis, we measure the CP violation parameters, ACP=-0.01-0.28+0.28(stat) ±0.09(syst), Dsin 2 1=0.06-0.44+0.45(stat)±0.06(syst). No evidence for either mixing-induced or direct CP violation is found. In a 3-parameter fit sensitive to cos 2 1 performed in the half-Dalitz spaces, s-≤s+ and s->s+, where s± m2(D*±KS0), we extract the CP violation parameters, Jc/J0=0.60-0.28+0.25(stat)±0.08(syst), 2Js1/J0sin 2 1=-0.17-0.42+0.42(stat)±0.09(syst), 2Js2/J0cos 2 1=-0.23-0.41+0.43(stat) ±0.13(syst). A large value of Jc/J0 would indicate a significant resonant contribution from a broad unknown Ds**+ state. Although the sign of the factor, 2Js2/J0, can be deduced from theory, no conclusion can be drawn regarding the sign of cos 2 1 given the errors.",

author = "J. Dalseno and I. Adachi and H. Aihara and T. Aushev and Bakich, {A. M.} and V. Balagura and A. Bay and U. Bitenc and I. Bizjak and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and Y. Chao and A. Chen and Cheon, {B. G.} and R. Chistov and Cho, {I. S.} and Y. Choi and Choi, {Y. K.} and M. Danilov and M. Dash and A. Drutskoy and S. Eidelman and A. Go and H. Ha and K. Hayasaka and M. Hazumi and D. Heffernan and T. Hokuue and Hyun, {H. J.} and K. Inami and A. Ishikawa and H. Ishino and M. Iwasaki and Y. Iwasaki and Joshi, {N. J.} and Kah, {D. H.} and Kang, {J. H.} and P. Kapusta and N. Katayama and H. Kawai and T. Kawasaki and H. Kichimi and Kim, {H. J.} and Kim, {Y. J.} and K. Kinoshita and P. Kri{\v z}an and P. Krokovny and R. Kumar and Kuo, {C. C.} and A. Kuzmin and Kwon, {Y. J.} and Lee, {J. S.} and Lee, {S. E.} and T. Lesiak and J. Li and A. Limosani and Lin, {S. W.} and D. Liventsev and F. Mandl and T. Matsumoto and S. McOnie and T. Medvedeva and W. Mitaroff and H. Miyake and H. Miyata and Moloney, {G. R.} and E. Nakano and M. Nakao and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and S. Okuno and Y. Onuki and W. Ostrowicz and H. Ozaki and P. Pakhlov and G. Pakhlova and Park, {C. W.} and H. Park and Park, {K. S.} and R. Pestotnik and Piilonen, {L. E.} and H. Sahoo and Y. Sakai and O. Schneider and J. Sch{\"u}mann and R. Seidl and A. Sekiya and K. Senyo and Sevior, {M. E.} and M. Shapkin and H. Shibuya and Singh, {J. B.} and A. Sokolov and A. Somov and S. Stani{\v c} and M. Stari{\v c} and H. Stoeck and K. Sumisawa and T. Sumiyoshi and F. Takasaki and M. Tanaka and Taylor, {G. N.} and Y. Teramoto and Tian, {X. C.} and T. Tsukamoto and S. Uehara and K. Ueno and T. Uglov and Y. Unno and S. Uno and P. Urquijo and G. Varner and S. Villa and A. Vinokurova and Wang, {C. C.} and Wang, {C. H.} and Y. Watanabe and R. Wedd and E. Won and Yabsley, {B. D.} and A. Yamaguchi and Y. Yamashita and M. Yamauchi and Zhang, {Z. P.} and V. Zhilich and A. Zupanc",

year = "2007",

month = oct,

day = "15",

doi = "10.1103/PhysRevD.76.072004",

language = "English",

volume = "76",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

publisher = "American Physical Society",

number = "7",

}

Dalseno, J, Adachi, I, Aihara, H, Aushev, T, Bakich, AM, Balagura, V, Bay, A, Bitenc, U, Bizjak, I, Bozek, A, Bračko, M, Browder, TE, Chao, Y, Chen, A, Cheon, BG, Chistov, R, Cho, IS, Choi, Y, Choi, YK, Danilov, M, Dash, M, Drutskoy, A, Eidelman, S, Go, A, Ha, H, Hayasaka, K, Hazumi, M, Heffernan, D, Hokuue, T, Hyun, HJ, Inami, K, Ishikawa, A, Ishino, H, Iwasaki, M, Iwasaki, Y, Joshi, NJ, Kah, DH, Kang, JH, Kapusta, P, Katayama, N, Kawai, H, Kawasaki, T, Kichimi, H, Kim, HJ, Kim, YJ, Kinoshita, K, Križan, P, Krokovny, P, Kumar, R, Kuo, CC, Kuzmin, A, Kwon, YJ, Lee, JS, Lee, SE, Lesiak, T, Li, J, Limosani, A, Lin, SW, Liventsev, D, Mandl, F, Matsumoto, T, McOnie, S, Medvedeva, T, Mitaroff, W, Miyake, H, Miyata, H, Moloney, GR, Nakano, E, Nakao, M, Nishida, S, Nitoh, O, Ogawa, S, Ohshima, T, Okuno, S, Onuki, Y, Ostrowicz, W, Ozaki, H, Pakhlov, P, Pakhlova, G, Park, CW, Park, H, Park, KS, Pestotnik, R, Piilonen, LE, Sahoo, H, Sakai, Y, Schneider, O, Schümann, J, Seidl, R, Sekiya, A, Senyo, K, Sevior, ME, Shapkin, M, Shibuya, H, Singh, JB, Sokolov, A, Somov, A, Stanič, S, Starič, M, Stoeck, H, Sumisawa, K, Sumiyoshi, T, Takasaki, F, Tanaka, M, Taylor, GN, Teramoto, Y, Tian, XC, Tsukamoto, T, Uehara, S, Ueno, K, Uglov, T, Unno, Y, Uno, S, Urquijo, P, Varner, G, Villa, S, Vinokurova, A, Wang, CC, Wang, CH, Watanabe, Y, Wedd, R, Won, E, Yabsley, BD, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Zhang, ZP, Zhilich, V & Zupanc, A 2007, 'Measurement of branching fraction and time-dependent CP asymmetry parameters in B0→D*+D*-KS0 decays', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 76, no. 7, 072004. https://doi.org/10.1103/PhysRevD.76.072004

TY - JOUR

T1 - Measurement of branching fraction and time-dependent CP asymmetry parameters in B0→D*+D*-KS0 decays

AU - Dalseno, J.

AU - Adachi, I.

AU - Aihara, H.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Bay, A.

AU - Bitenc, U.

AU - Bizjak, I.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chao, Y.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Cho, I. S.

AU - Choi, Y.

AU - Choi, Y. K.

AU - Danilov, M.

AU - Dash, M.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Go, A.

AU - Ha, H.

AU - Hayasaka, K.

AU - Hazumi, M.

AU - Heffernan, D.

AU - Hokuue, T.

AU - Hyun, H. J.

AU - Inami, K.

AU - Ishikawa, A.

AU - Ishino, H.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Joshi, N. J.

AU - Kah, D. H.

AU - Kang, J. H.

AU - Kapusta, P.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Križan, P.

AU - Krokovny, P.

AU - Kumar, R.

AU - Kuo, C. C.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lee, J. S.

AU - Lee, S. E.

AU - Lesiak, T.

AU - Li, J.

AU - Limosani, A.

AU - Lin, S. W.

AU - Liventsev, D.

AU - Mandl, F.

AU - Matsumoto, T.

AU - McOnie, S.

AU - Medvedeva, T.

AU - Mitaroff, W.

AU - Miyake, H.

AU - Miyata, H.

AU - Moloney, G. R.

AU - Nakano, E.

AU - Nakao, M.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okuno, S.

AU - Onuki, Y.

AU - Ostrowicz, W.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H.

AU - Park, K. S.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Schümann, J.

AU - Seidl, R.

AU - Sekiya, A.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shibuya, H.

AU - Singh, J. B.

AU - Sokolov, A.

AU - Somov, A.

AU - Stanič, S.

AU - Starič, M.

AU - Stoeck, H.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Takasaki, F.

AU - Tanaka, M.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Tian, X. C.

AU - Tsukamoto, T.

AU - Uehara, S.

AU - Ueno, K.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Varner, G.

AU - Villa, S.

AU - Vinokurova, A.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zupanc, A.

PY - 2007/10/15

Y1 - 2007/10/15

N2 - We present a measurement of the branching fraction and time-dependent CP violation parameters for B0→D*+D*-KS0 decays. These results are obtained from a 414fb-1 data sample that contains 449×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fraction, B(B0→D*+D*-KS0)=[3.4±0.4(stat)±0.7(syst)] ×10-3, which is in agreement with the current world average. We also obtain an upper limit on the product branching fraction for a possible two-body decay, B(B0→Ds1+(2536)D*-)B(Ds1+(2536)→D*+KS0)<7. 1×10-4 (90% CL). In the traditional 2-parameter time-dependent CP analysis, we measure the CP violation parameters, ACP=-0.01-0.28+0.28(stat) ±0.09(syst), Dsin 2 1=0.06-0.44+0.45(stat)±0.06(syst). No evidence for either mixing-induced or direct CP violation is found. In a 3-parameter fit sensitive to cos 2 1 performed in the half-Dalitz spaces, s-≤s+ and s->s+, where s± m2(D*±KS0), we extract the CP violation parameters, Jc/J0=0.60-0.28+0.25(stat)±0.08(syst), 2Js1/J0sin 2 1=-0.17-0.42+0.42(stat)±0.09(syst), 2Js2/J0cos 2 1=-0.23-0.41+0.43(stat) ±0.13(syst). A large value of Jc/J0 would indicate a significant resonant contribution from a broad unknown Ds**+ state. Although the sign of the factor, 2Js2/J0, can be deduced from theory, no conclusion can be drawn regarding the sign of cos 2 1 given the errors.

AB - We present a measurement of the branching fraction and time-dependent CP violation parameters for B0→D*+D*-KS0 decays. These results are obtained from a 414fb-1 data sample that contains 449×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fraction, B(B0→D*+D*-KS0)=[3.4±0.4(stat)±0.7(syst)] ×10-3, which is in agreement with the current world average. We also obtain an upper limit on the product branching fraction for a possible two-body decay, B(B0→Ds1+(2536)D*-)B(Ds1+(2536)→D*+KS0)<7. 1×10-4 (90% CL). In the traditional 2-parameter time-dependent CP analysis, we measure the CP violation parameters, ACP=-0.01-0.28+0.28(stat) ±0.09(syst), Dsin 2 1=0.06-0.44+0.45(stat)±0.06(syst). No evidence for either mixing-induced or direct CP violation is found. In a 3-parameter fit sensitive to cos 2 1 performed in the half-Dalitz spaces, s-≤s+ and s->s+, where s± m2(D*±KS0), we extract the CP violation parameters, Jc/J0=0.60-0.28+0.25(stat)±0.08(syst), 2Js1/J0sin 2 1=-0.17-0.42+0.42(stat)±0.09(syst), 2Js2/J0cos 2 1=-0.23-0.41+0.43(stat) ±0.13(syst). A large value of Jc/J0 would indicate a significant resonant contribution from a broad unknown Ds**+ state. Although the sign of the factor, 2Js2/J0, can be deduced from theory, no conclusion can be drawn regarding the sign of cos 2 1 given the errors.

UR - http://www.scopus.com/inward/record.url?scp=35348856980&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.76.072004

DO - 10.1103/PhysRevD.76.072004

M3 - Article

AN - SCOPUS:35348856980

SN - 1550-7998

VL - 76

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 7

M1 - 072004

ER -

Measurement of branching fraction and time-dependent CP asymmetry parameters in B0→D+D-KS0 decays

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