Improved measurement of CP-violating parameters in B→ρ+ρ- decays

A. Somov; A. J. Schwartz; I. Adachi; H. Aihara; D. Anipko; V. Aulchenko; T. Aushev; A. M. Bakich; I. Bedny; U. Bitenc; I. Bizjak; A. Bondar; M. Bračko; T. E. Browder; M. C. Chang; Y. Chao; A. Chen; K. F. Chen; W. T. Chen; B. G. Cheon; R. Chistov; I. S. Cho; Y. Choi; Y. K. Choi; S. Cole; J. Dalseno; M. Dash; J. Dragic; A. Drutskoy; S. Eidelman; S. Fratina; G. Gokhroo; B. Golob; H. Ha; J. Haba; T. Hara; K. Hayasaka; H. Hayashii; M. Hazumi; D. Heffernan; T. Hokuue; Y. Hoshi; W. S. Hou; H. J. Hyun; T. Iijima; K. Inami; A. Ishikawa; H. Ishino; R. Itoh; M. Iwasaki; Y. Iwasaki; N. Joshi; D. H. Kah; J. H. Kang; N. Katayama; H. Kichimi; H. O. Kim; Y. J. Kim; K. Kinoshita; S. Korpar; P. Križan; P. Krokovny; R. Kulasiri; R. Kumar; C. C. Kuo; A. Kuzmin; Y. J. Kwon; J. S. Lee; M. J. Lee; S. E. Lee; T. Lesiak; A. Limosani; S. W. Lin; D. Marlow; T. Matsumoto; S. McOnie; T. Medvedeva; W. Mitaroff; H. Miyake; H. Miyata; Y. Miyazaki; R. Mizuk; D. Mohapatra; G. R. Moloney; M. Nakao; O. Nitoh; T. Nozaki; S. Ogawa; T. Ohshima; S. Okuno; S. L. Olsen; Y. Onuki; H. Ozaki; P. Pakhlov; G. Pakhlova; C. W. Park; R. Pestotnik; L. E. Piilonen; H. Sahoo; Y. Sakai; O. Schneider; J. Schümann; K. Senyo; M. Shapkin; C. P. Shen; H. Shibuya; B. Shwartz; M. Starič; H. Stoeck; K. Sumisawa; T. Sumiyoshi; F. Takasaki; N. Tamura; M. Tanaka; Y. Teramoto; X. C. Tian; K. Trabelsi; T. Tsukamoto; S. Uehara; K. Ueno; T. Uglov; Y. Unno; S. Uno; P. Urquijo; Y. Usov; G. Varner; K. E. Varvell; S. Villa; A. Vinokurova; C. C. Wang; C. H. Wang; M. Z. Wang; P. Wang; Y. Watanabe; E. Won; B. D. Yabsley; A. Yamaguchi; Y. Yamashita; Z. P. Zhang; A. Zupanc

doi:10.1103/PhysRevD.76.011104

Improved measurement of CP-violating parameters in B→ρ+ρ- decays

A. Somov, A. J. Schwartz, I. Adachi, H. Aihara, D. Anipko, V. Aulchenko, T. Aushev, A. M. Bakich, I. Bedny, U. Bitenc, I. Bizjak, A. Bondar, M. Bračko, T. E. Browder, M. C. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. CheonR. Chistov, I. S. Cho, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, S. Fratina, G. Gokhroo, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. Joshi, D. H. Kah, J. H. Kang, N. Katayama, H. Kichimi, H. O. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. W. Lin, D. Marlow, T. Matsumoto, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, M. Nakao, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schümann, K. Senyo, M. Shapkin, C. P. Shen, H. Shibuya, B. Shwartz, M. Starič, H. Stoeck, K. Sumisawa, T. Sumiyoshi, F. Takasaki, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, M. Z. Wang, P. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, Z. P. Zhang, A. Zupanc

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

33 Citations (Scopus)

Abstract

We present a measurement of the CP-violating asymmetry in B0→ρ+ρ- decays using 535×106 BB̄ pairs collected with the Belle detector at the KEKB e+e- collider. We measure CP-violating coefficients A=0.16±0.21(stat)±0.08(syst) and S=0.19±0. 30(stat)±0.08(syst). These values are used to determine the unitarity triangle angle 2 using an isospin analysis; the solution consistent with the standard model lies in the range 54°< 2<113° at the 90% confidence level.

Original language	English
Article number	011104
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	76
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.76.011104
Publication status	Published - 2007 Jul 10
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.76.011104

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Somov, A., Schwartz, A. J., Adachi, I., Aihara, H., Anipko, D., Aulchenko, V., Aushev, T., Bakich, A. M., Bedny, I., Bitenc, U., Bizjak, I., Bondar, A., Bračko, M., Browder, T. E., Chang, M. C., Chao, Y., Chen, A., Chen, K. F., Chen, W. T., ... Zupanc, A. (2007). Improved measurement of CP-violating parameters in B→ρ+ρ- decays. Physical Review D - Particles, Fields, Gravitation and Cosmology, 76(1), [011104]. https://doi.org/10.1103/PhysRevD.76.011104

Somov, A, Schwartz, AJ, Adachi, I, Aihara, H, Anipko, D, Aulchenko, V, Aushev, T, Bakich, AM, Bedny, I, Bitenc, U, Bizjak, I, Bondar, A, Bračko, M, Browder, TE, Chang, MC, Chao, Y, Chen, A, Chen, KF, Chen, WT, Cheon, BG, Chistov, R, Cho, IS, Choi, Y, Choi, YK, Cole, S, Dalseno, J, Dash, M, Dragic, J, Drutskoy, A, Eidelman, S, Fratina, S, Gokhroo, G, Golob, B, Ha, H, Haba, J, Hara, T, Hayasaka, K, Hayashii, H, Hazumi, M, Heffernan, D, Hokuue, T, Hoshi, Y, Hou, WS, Hyun, HJ, Iijima, T, Inami, K, Ishikawa, A, Ishino, H, Itoh, R, Iwasaki, M, Iwasaki, Y, Joshi, N, Kah, DH, Kang, JH, Katayama, N, Kichimi, H, Kim, HO, Kim, YJ, Kinoshita, K, Korpar, S, Križan, P, Krokovny, P, Kulasiri, R, Kumar, R, Kuo, CC, Kuzmin, A, Kwon, YJ, Lee, JS, Lee, MJ, Lee, SE, Lesiak, T, Limosani, A, Lin, SW, Marlow, D, Matsumoto, T, McOnie, S, Medvedeva, T, Mitaroff, W, Miyake, H, Miyata, H, Miyazaki, Y, Mizuk, R, Mohapatra, D, Moloney, GR, Nakao, M, Nitoh, O, Nozaki, T, Ogawa, S, Ohshima, T, Okuno, S, Olsen, SL, Onuki, Y, Ozaki, H, Pakhlov, P, Pakhlova, G, Park, CW, Pestotnik, R, Piilonen, LE, Sahoo, H, Sakai, Y, Schneider, O, Schümann, J, Senyo, K, Shapkin, M, Shen, CP, Shibuya, H, Shwartz, B, Starič, M, Stoeck, H, Sumisawa, K, Sumiyoshi, T, Takasaki, F, Tamura, N, Tanaka, M, Teramoto, Y, Tian, XC, Trabelsi, K, Tsukamoto, T, Uehara, S, Ueno, K, Uglov, T, Unno, Y, Uno, S, Urquijo, P, Usov, Y, Varner, G, Varvell, KE, Villa, S, Vinokurova, A, Wang, CC, Wang, CH, Wang, MZ, Wang, P, Watanabe, Y, Won, E, Yabsley, BD, Yamaguchi, A, Yamashita, Y, Zhang, ZP & Zupanc, A 2007, 'Improved measurement of CP-violating parameters in B→ρ+ρ- decays', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 76, no. 1, 011104. https://doi.org/10.1103/PhysRevD.76.011104

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title = "Improved measurement of CP-violating parameters in B→ρ+ρ- decays",

abstract = "We present a measurement of the CP-violating asymmetry in B0→ρ+ρ- decays using 535×106 B{\=B} pairs collected with the Belle detector at the KEKB e+e- collider. We measure CP-violating coefficients A=0.16±0.21(stat)±0.08(syst) and S=0.19±0. 30(stat)±0.08(syst). These values are used to determine the unitarity triangle angle 2 using an isospin analysis; the solution consistent with the standard model lies in the range 54°< 2<113° at the 90% confidence level.",

author = "A. Somov and Schwartz, {A. J.} and I. Adachi and H. Aihara and D. Anipko and V. Aulchenko and T. Aushev and Bakich, {A. M.} and I. Bedny and U. Bitenc and I. Bizjak and A. Bondar and M. Bra{\v c}ko and Browder, {T. E.} and Chang, {M. C.} and Y. Chao and A. Chen and Chen, {K. F.} and Chen, {W. T.} and Cheon, {B. G.} and R. Chistov and Cho, {I. S.} and Y. Choi and Choi, {Y. K.} and S. Cole and J. Dalseno and M. Dash and J. Dragic and A. Drutskoy and S. Eidelman and S. Fratina and G. Gokhroo and B. Golob and H. Ha and J. Haba and T. Hara and K. Hayasaka and H. Hayashii and M. Hazumi and D. Heffernan and T. Hokuue and Y. Hoshi and Hou, {W. S.} and Hyun, {H. J.} and T. Iijima and K. Inami and A. Ishikawa and H. Ishino and R. Itoh and M. Iwasaki and Y. Iwasaki and N. Joshi and Kah, {D. H.} and Kang, {J. H.} and N. Katayama and H. Kichimi and Kim, {H. O.} 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, {J. S.} and Lee, {M. J.} and Lee, {S. E.} and T. Lesiak and A. Limosani and Lin, {S. W.} and D. Marlow and T. Matsumoto and S. McOnie and T. Medvedeva and W. Mitaroff and H. Miyake and H. Miyata and Y. Miyazaki and R. Mizuk and D. Mohapatra and Moloney, {G. R.} and M. Nakao and O. Nitoh and T. Nozaki 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 R. Pestotnik and Piilonen, {L. E.} and H. Sahoo and Y. Sakai and O. Schneider and J. Sch{\"u}mann and K. Senyo and M. Shapkin and Shen, {C. P.} and H. Shibuya and B. Shwartz and M. Stari{\v c} and H. Stoeck and K. Sumisawa and T. Sumiyoshi and F. Takasaki and N. Tamura and M. Tanaka and Y. Teramoto and Tian, {X. C.} 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 S. Villa and A. Vinokurova and Wang, {C. C.} and Wang, {C. H.} and Wang, {M. Z.} and P. Wang and Y. Watanabe and E. Won and Yabsley, {B. D.} and A. Yamaguchi and Y. Yamashita and Zhang, {Z. P.} and A. Zupanc",

year = "2007",

month = jul,

day = "10",

doi = "10.1103/PhysRevD.76.011104",

language = "English",

volume = "76",

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

issn = "1550-7998",

number = "1",

}

TY - JOUR

T1 - Improved measurement of CP-violating parameters in B→ρ+ρ- decays

AU - Somov, A.

AU - Schwartz, A. J.

AU - Adachi, I.

AU - Aihara, H.

AU - Anipko, D.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Bedny, I.

AU - Bitenc, U.

AU - Bizjak, I.

AU - Bondar, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, M. C.

AU - Chao, Y.

AU - Chen, A.

AU - Chen, K. F.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Cho, I. S.

AU - Choi, Y.

AU - Choi, Y. K.

AU - Cole, S.

AU - Dalseno, J.

AU - Dash, M.

AU - Dragic, J.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Fratina, S.

AU - Gokhroo, G.

AU - Golob, B.

AU - Ha, H.

AU - Haba, J.

AU - Hara, T.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Heffernan, D.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Ishikawa, A.

AU - Ishino, H.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Joshi, N.

AU - Kah, D. H.

AU - Kang, J. H.

AU - Katayama, N.

AU - Kichimi, H.

AU - Kim, H. O.

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, J. S.

AU - Lee, M. J.

AU - Lee, S. E.

AU - Lesiak, T.

AU - Limosani, A.

AU - Lin, S. W.

AU - Marlow, D.

AU - Matsumoto, T.

AU - McOnie, S.

AU - Medvedeva, T.

AU - Mitaroff, W.

AU - Miyake, H.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mizuk, R.

AU - Mohapatra, D.

AU - Moloney, G. R.

AU - Nakao, M.

AU - Nitoh, O.

AU - Nozaki, T.

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 - Pestotnik, R.

AU - Piilonen, L. E.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Schümann, J.

AU - Senyo, K.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shibuya, H.

AU - Shwartz, B.

AU - Starič, M.

AU - Stoeck, H.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Takasaki, F.

AU - Tamura, N.

AU - Tanaka, M.

AU - Teramoto, Y.

AU - Tian, X. C.

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 - Villa, S.

AU - Vinokurova, A.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Wang, P.

AU - Watanabe, Y.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Zhang, Z. P.

AU - Zupanc, A.

PY - 2007/7/10

Y1 - 2007/7/10

N2 - We present a measurement of the CP-violating asymmetry in B0→ρ+ρ- decays using 535×106 BB̄ pairs collected with the Belle detector at the KEKB e+e- collider. We measure CP-violating coefficients A=0.16±0.21(stat)±0.08(syst) and S=0.19±0. 30(stat)±0.08(syst). These values are used to determine the unitarity triangle angle 2 using an isospin analysis; the solution consistent with the standard model lies in the range 54°< 2<113° at the 90% confidence level.

AB - We present a measurement of the CP-violating asymmetry in B0→ρ+ρ- decays using 535×106 BB̄ pairs collected with the Belle detector at the KEKB e+e- collider. We measure CP-violating coefficients A=0.16±0.21(stat)±0.08(syst) and S=0.19±0. 30(stat)±0.08(syst). These values are used to determine the unitarity triangle angle 2 using an isospin analysis; the solution consistent with the standard model lies in the range 54°< 2<113° at the 90% confidence level.

UR - http://www.scopus.com/inward/record.url?scp=34447304051&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34447304051&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.76.011104

DO - 10.1103/PhysRevD.76.011104

M3 - Article

AN - SCOPUS:34447304051

SN - 1550-7998

VL - 76

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

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

IS - 1

M1 - 011104

ER -

Improved measurement of CP-violating parameters in B→ρ+ρ- decays

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