Evidence for CP violation in B0→D+D- Decays

S. Fratina; K. Abe; K. Abe; I. Adachi; H. Aihara; D. Anipko; K. Arinstein; T. Aushev; A. M. Bakich; E. Barberio; A. Bay; K. Belous; U. Bitenc; I. Bizjak; A. Bondar; A. Bozek; M. Bračko; J. Brodzicka; T. E. Browder; M. C. Chang; P. Chang; Y. Chao; A. Chen; K. F. Chen; W. T. Chen; B. G. Cheon; R. Chistov; Y. Choi; Y. K. Choi; S. Cole; J. Dalseno; M. Dash; A. Drutskoy; S. Eidelman; A. Go; B. Golob; A. Gorišek; H. Ha; J. Haba; K. Hara; M. Hazumi; D. Heffernan; T. Hokuue; Y. Hoshi; W. S. Hou; T. Iijima; K. Inami; A. Ishikawa; H. Ishino; R. Itoh; M. Iwasaki; Y. Iwasaki; H. Kaji; J. H. Kang; N. Katayama; H. Kawai; T. Kawasaki; H. Kichimi; H. J. Kim; H. O. Kim; S. K. Kim; Y. J. Kim; K. Kinoshita; S. Korpar; P. Križan; P. Krokovny; R. Kulasiri; R. Kumar; C. C. Kuo; A. Kuzmin; Y. J. Kwon; M. J. Lee; S. E. Lee; T. Lesiak; A. Limosani; S. W. Lin; D. Liventsev; F. Mandl; T. Matsumoto; A. Matyja; S. McOnie; T. Medvedeva; W. Mitaroff; K. Miyabayashi; H. Miyake; H. Miyata; Y. Miyazaki; R. Mizuk; G. R. Moloney; T. Mori; E. Nakano; M. Nakao; H. Nakazawa; S. Nishida; S. Noguchi; S. Ogawa; T. Ohshima; S. Okuno; S. L. Olsen; Y. Onuki; H. Ozaki; P. Pakhlov; G. Pakhlova; C. W. Park; H. Park; L. S. Peak; R. Pestotnik; L. E. Piilonen; Y. Sakai; N. Satoyama; T. Schietinger; O. Schneider; J. Schümann; C. Schwanda; A. J. Schwartz; K. Senyo; M. E. Sevior; M. Shapkin; H. Shibuya; B. Shwartz; J. B. Singh; A. Somov; N. Soni; S. Stanič; M. Starič; H. Stoeck; T. Sumiyoshi; F. Takasaki; K. Tamai; M. Tanaka; Y. Teramoto; X. C. Tian; I. Tikhomirov; K. Trabelsi; T. Tsukamoto; S. Uehara; K. Ueno; T. Uglov; Y. Unno; S. Uno; P. Urquijo; Y. Usov; G. Varner; K. E. Varvell; K. Vervink; S. Villa; C. H. Wang; Y. Watanabe; E. Won; B. D. Yabsley; A. Yamaguchi; Y. Yamashita; M. Yamauchi; C. C. Zhang; Z. P. Zhang; V. Zhilich; A. Zupanc

doi:10.1103/PhysRevLett.98.221802

Evidence for CP violation in B0→D+D- Decays

S. Fratina, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, K. Belous, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, M. C. ChangP. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, A. Go, B. Golob, A. Gorišek, H. Ha, J. Haba, K. Hara, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W. S. Hou, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. W. Lin, D. Liventsev, F. Mandl, T. Matsumoto, A. Matyja, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, C. H. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

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

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Abstract

We report measurements of the branching fraction and CP violation parameters in B0→D+D- decays. The results are based on a data sample that contains 535×106 BB̄ pairs collected at the Υ(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain [1.97±0.20(stat)±0.20(syst)]×10-4 for the branching fraction of B0→D+D-. The measured values of the CP violation parameters are S=-1.13±0.37±0.09, A=0.91±0.23±0.06, where the first error is statistical and the second is systematic. We find evidence of CP violation in B0→D+D- at the 4.1σ confidence level. While the value of S is consistent with expectations from other measurements, the value of the parameter A favors large direct CP violation at the 3.2σ confidence level, in contradiction to standard model expectations.

Original language	English
Article number	221802
Journal	Physical Review Letters
Volume	98
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.98.221802
State	Published - 31 May 2007

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10.1103/PhysRevLett.98.221802

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Fratina, S., Abe, K., Abe, K., Adachi, I., Aihara, H., Anipko, D., Arinstein, K., Aushev, T., Bakich, A. M., Barberio, E., Bay, A., Belous, K., Bitenc, U., Bizjak, I., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., ... Zupanc, A. (2007). Evidence for CP violation in B0→D+D- Decays. Physical Review Letters, 98(22), Article 221802. https://doi.org/10.1103/PhysRevLett.98.221802

@article{cf44968a28184ecf85fbae25c5113c64,

title = "Evidence for CP violation in B0→D+D- Decays",

abstract = "We report measurements of the branching fraction and CP violation parameters in B0→D+D- decays. The results are based on a data sample that contains 535×106 B{\=B} pairs collected at the Υ(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain [1.97±0.20(stat)±0.20(syst)]×10-4 for the branching fraction of B0→D+D-. The measured values of the CP violation parameters are S=-1.13±0.37±0.09, A=0.91±0.23±0.06, where the first error is statistical and the second is systematic. We find evidence of CP violation in B0→D+D- at the 4.1σ confidence level. While the value of S is consistent with expectations from other measurements, the value of the parameter A favors large direct CP violation at the 3.2σ confidence level, in contradiction to standard model expectations.",

author = "S. Fratina and K. Abe and K. Abe and I. Adachi and H. Aihara and D. Anipko and K. Arinstein and T. Aushev and Bakich, {A. M.} and E. Barberio and A. Bay and K. Belous and U. Bitenc and I. Bizjak and A. Bondar and A. Bozek and M. Bra{\v c}ko and J. Brodzicka and Browder, {T. E.} and Chang, {M. C.} and P. Chang and Y. Chao and A. Chen and Chen, {K. F.} and Chen, {W. T.} and Cheon, {B. G.} and R. Chistov and Y. Choi and Choi, {Y. K.} and S. Cole and J. Dalseno and M. Dash and A. Drutskoy and S. Eidelman and A. Go and B. Golob and A. Gori{\v s}ek and H. Ha and J. Haba and K. Hara and M. Hazumi and D. Heffernan and T. Hokuue and Y. Hoshi and Hou, {W. S.} and T. Iijima and K. Inami and A. Ishikawa and H. Ishino and R. Itoh and M. Iwasaki and Y. Iwasaki and H. Kaji and Kang, {J. H.} and N. Katayama and H. Kawai and T. Kawasaki and H. Kichimi and Kim, {H. J.} and Kim, {H. O.} and Kim, {S. K.} and Kim, {Y. J.} and K. Kinoshita and S. Korpar and P. Kri{\v z}an and P. Krokovny and R. Kulasiri and R. Kumar and Kuo, {C. C.} and A. Kuzmin and Kwon, {Y. J.} and Lee, {M. J.} and Lee, {S. E.} and T. Lesiak and A. Limosani and Lin, {S. W.} and D. Liventsev and F. Mandl and T. Matsumoto and A. Matyja and S. McOnie and T. Medvedeva and W. Mitaroff and K. Miyabayashi and H. Miyake and H. Miyata and Y. Miyazaki and R. Mizuk and Moloney, {G. R.} and T. Mori and E. Nakano and M. Nakao and H. Nakazawa and S. Nishida and S. Noguchi and S. Ogawa and T. Ohshima and S. Okuno and Olsen, {S. L.} and Y. Onuki and H. Ozaki and P. Pakhlov and G. Pakhlova and Park, {C. W.} and H. Park and Peak, {L. S.} and R. Pestotnik and Piilonen, {L. E.} and Y. Sakai and N. Satoyama and T. Schietinger and O. Schneider and J. Sch{\"u}mann and C. Schwanda and Schwartz, {A. J.} and K. Senyo and Sevior, {M. E.} and M. Shapkin and H. Shibuya and B. Shwartz and Singh, {J. B.} and A. Somov and N. Soni and S. Stani{\v c} and M. Stari{\v c} and H. Stoeck and T. Sumiyoshi and F. Takasaki and K. Tamai and M. Tanaka and Y. Teramoto and Tian, {X. C.} and I. Tikhomirov and K. Trabelsi and T. Tsukamoto and S. Uehara and K. Ueno and T. Uglov and Y. Unno and S. Uno and P. Urquijo and Y. Usov and G. Varner and Varvell, {K. E.} and K. Vervink and S. Villa and Wang, {C. H.} and Y. Watanabe and E. Won and Yabsley, {B. D.} and A. Yamaguchi and Y. Yamashita and M. Yamauchi and Zhang, {C. C.} and Zhang, {Z. P.} and V. Zhilich and A. Zupanc",

year = "2007",

month = may,

day = "31",

doi = "10.1103/PhysRevLett.98.221802",

language = "English",

volume = "98",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

}

Fratina, S, Abe, K, Abe, K, Adachi, I, Aihara, H, Anipko, D, Arinstein, K, Aushev, T, Bakich, AM, Barberio, E, Bay, A, Belous, K, Bitenc, U, Bizjak, I, Bondar, A, Bozek, A, Bračko, M, Brodzicka, J, Browder, TE, Chang, MC, Chang, P, Chao, Y, Chen, A, Chen, KF, Chen, WT, Cheon, BG, Chistov, R, Choi, Y, Choi, YK, Cole, S, Dalseno, J, Dash, M, Drutskoy, A, Eidelman, S, Go, A, Golob, B, Gorišek, A, Ha, H, Haba, J, Hara, K, Hazumi, M, Heffernan, D, Hokuue, T, Hoshi, Y, Hou, WS, Iijima, T, Inami, K, Ishikawa, A, Ishino, H, Itoh, R, Iwasaki, M, Iwasaki, Y, Kaji, H, Kang, JH, Katayama, N, Kawai, H, Kawasaki, T, Kichimi, H, Kim, HJ, Kim, HO, Kim, SK, Kim, YJ, Kinoshita, K, Korpar, S, Križan, P, Krokovny, P, Kulasiri, R, Kumar, R, Kuo, CC, Kuzmin, A, Kwon, YJ, Lee, MJ, Lee, SE, Lesiak, T, Limosani, A, Lin, SW, Liventsev, D, Mandl, F, Matsumoto, T, Matyja, A, McOnie, S, Medvedeva, T, Mitaroff, W, Miyabayashi, K, Miyake, H, Miyata, H, Miyazaki, Y, Mizuk, R, Moloney, GR, Mori, T, Nakano, E, Nakao, M, Nakazawa, H, Nishida, S, Noguchi, S, Ogawa, S, Ohshima, T, Okuno, S, Olsen, SL, Onuki, Y, Ozaki, H, Pakhlov, P, Pakhlova, G, Park, CW, Park, H, Peak, LS, Pestotnik, R, Piilonen, LE, Sakai, Y, Satoyama, N, Schietinger, T, Schneider, O, Schümann, J, Schwanda, C, Schwartz, AJ, Senyo, K, Sevior, ME, Shapkin, M, Shibuya, H, Shwartz, B, Singh, JB, Somov, A, Soni, N, Stanič, S, Starič, M, Stoeck, H, Sumiyoshi, T, Takasaki, F, Tamai, K, Tanaka, M, Teramoto, Y, Tian, XC, Tikhomirov, I, Trabelsi, K, Tsukamoto, T, Uehara, S, Ueno, K, Uglov, T, Unno, Y, Uno, S, Urquijo, P, Usov, Y, Varner, G, Varvell, KE, Vervink, K, Villa, S, Wang, CH, Watanabe, Y, Won, E, Yabsley, BD, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Zhang, CC, Zhang, ZP, Zhilich, V & Zupanc, A 2007, 'Evidence for CP violation in B0→D+D- Decays', Physical Review Letters, vol. 98, no. 22, 221802. https://doi.org/10.1103/PhysRevLett.98.221802

TY - JOUR

T1 - Evidence for CP violation in B0→D+D- Decays

AU - Fratina, S.

AU - Abe, K.

AU - Adachi, I.

AU - Aihara, H.

AU - Anipko, D.

AU - Arinstein, K.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Barberio, E.

AU - Bay, A.

AU - Belous, K.

AU - Bitenc, U.

AU - Bizjak, I.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Brodzicka, J.

AU - Browder, T. E.

AU - Chang, M. C.

AU - Chang, P.

AU - Chao, Y.

AU - Chen, A.

AU - Chen, K. F.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Choi, Y.

AU - Choi, Y. K.

AU - Cole, S.

AU - Dalseno, J.

AU - Dash, M.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Go, A.

AU - Golob, B.

AU - Gorišek, A.

AU - Ha, H.

AU - Haba, J.

AU - Hara, K.

AU - Hazumi, M.

AU - Heffernan, D.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Iijima, T.

AU - Inami, K.

AU - Ishikawa, A.

AU - Ishino, H.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Kaji, H.

AU - Kang, J. H.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, H. O.

AU - Kim, S. K.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kulasiri, R.

AU - Kumar, R.

AU - Kuo, C. C.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lee, M. J.

AU - Lee, S. E.

AU - Lesiak, T.

AU - Limosani, A.

AU - Lin, S. W.

AU - Liventsev, D.

AU - Mandl, F.

AU - Matsumoto, T.

AU - Matyja, A.

AU - McOnie, S.

AU - Medvedeva, T.

AU - Mitaroff, W.

AU - Miyabayashi, K.

AU - Miyake, H.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mizuk, R.

AU - Moloney, G. R.

AU - Mori, T.

AU - Nakano, E.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Nishida, S.

AU - Noguchi, S.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Onuki, Y.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H.

AU - Peak, L. S.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Sakai, Y.

AU - Satoyama, N.

AU - Schietinger, T.

AU - Schneider, O.

AU - Schümann, J.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shibuya, H.

AU - Shwartz, B.

AU - Singh, J. B.

AU - Somov, A.

AU - Soni, N.

AU - Stanič, S.

AU - Starič, M.

AU - Stoeck, H.

AU - Sumiyoshi, T.

AU - Takasaki, F.

AU - Tamai, K.

AU - Tanaka, M.

AU - Teramoto, Y.

AU - Tian, X. C.

AU - Tikhomirov, I.

AU - Trabelsi, K.

AU - Tsukamoto, T.

AU - Uehara, S.

AU - Ueno, K.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Usov, Y.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vervink, K.

AU - Villa, S.

AU - Wang, C. H.

AU - Watanabe, Y.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Zhang, C. C.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zupanc, A.

PY - 2007/5/31

Y1 - 2007/5/31

N2 - We report measurements of the branching fraction and CP violation parameters in B0→D+D- decays. The results are based on a data sample that contains 535×106 BB̄ pairs collected at the Υ(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain [1.97±0.20(stat)±0.20(syst)]×10-4 for the branching fraction of B0→D+D-. The measured values of the CP violation parameters are S=-1.13±0.37±0.09, A=0.91±0.23±0.06, where the first error is statistical and the second is systematic. We find evidence of CP violation in B0→D+D- at the 4.1σ confidence level. While the value of S is consistent with expectations from other measurements, the value of the parameter A favors large direct CP violation at the 3.2σ confidence level, in contradiction to standard model expectations.

AB - We report measurements of the branching fraction and CP violation parameters in B0→D+D- decays. The results are based on a data sample that contains 535×106 BB̄ pairs collected at the Υ(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain [1.97±0.20(stat)±0.20(syst)]×10-4 for the branching fraction of B0→D+D-. The measured values of the CP violation parameters are S=-1.13±0.37±0.09, A=0.91±0.23±0.06, where the first error is statistical and the second is systematic. We find evidence of CP violation in B0→D+D- at the 4.1σ confidence level. While the value of S is consistent with expectations from other measurements, the value of the parameter A favors large direct CP violation at the 3.2σ confidence level, in contradiction to standard model expectations.

UR - http://www.scopus.com/inward/record.url?scp=34547296570&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.98.221802

DO - 10.1103/PhysRevLett.98.221802

M3 - Article

AN - SCOPUS:34547296570

SN - 0031-9007

VL - 98

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

M1 - 221802

ER -

Evidence for CP violation in B0→D+D- Decays

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