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 & 120 others 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, Ju Hwan 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, Youngjoon 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 journalArticle

45 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 languageEnglish
Article number011104
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume76
Issue number1
DOIs
Publication statusPublished - 2007 Jul 10

Fingerprint

triangles
confidence
asymmetry
detectors
decay
coefficients

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Somov, A., Schwartz, A. J., Adachi, I., Aihara, H., Anipko, D., Aulchenko, V., ... 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, 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. ; Cheon, B. G. ; Chistov, R. ; Cho, I. S. ; Choi, Y. ; Choi, Y. K. ; 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, W. S. ; Hyun, H. J. ; Iijima, T. ; Inami, K. ; Ishikawa, A. ; Ishino, H. ; Itoh, R. ; Iwasaki, M. ; Iwasaki, Y. ; Joshi, N. ; Kah, D. H. ; Kang, Ju Hwan ; Katayama, N. ; Kichimi, H. ; Kim, H. O. ; Kim, Y. J. ; Kinoshita, K. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kulasiri, R. ; Kumar, R. ; Kuo, C. C. ; Kuzmin, A. ; Kwon, Youngjoon ; Lee, J. S. ; Lee, M. J. ; Lee, S. E. ; Lesiak, T. ; Limosani, A. ; Lin, S. W. ; Marlow, D. ; Matsumoto, T. ; McOnie, S. ; Medvedeva, T. ; Mitaroff, W. ; Miyake, H. ; Miyata, H. ; Miyazaki, Y. ; Mizuk, R. ; Mohapatra, D. ; Moloney, G. R. ; Nakao, M. ; Nitoh, O. ; Nozaki, T. ; Ogawa, S. ; Ohshima, T. ; Okuno, S. ; Olsen, S. L. ; Onuki, Y. ; Ozaki, H. ; Pakhlov, P. ; Pakhlova, G. ; Park, C. W. ; Pestotnik, R. ; Piilonen, L. E. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Schümann, J. ; Senyo, K. ; Shapkin, M. ; Shen, C. P. ; Shibuya, H. ; Shwartz, B. ; Starič, M. ; Stoeck, H. ; Sumisawa, K. ; Sumiyoshi, T. ; Takasaki, F. ; Tamura, N. ; Tanaka, M. ; Teramoto, Y. ; Tian, X. C. ; Trabelsi, K. ; Tsukamoto, T. ; Uehara, S. ; Ueno, K. ; Uglov, T. ; Unno, Y. ; Uno, S. ; Urquijo, P. ; Usov, Y. ; Varner, G. ; Varvell, K. E. ; Villa, S. ; Vinokurova, A. ; Wang, C. C. ; Wang, C. H. ; Wang, M. Z. ; Wang, P. ; Watanabe, Y. ; Won, E. ; Yabsley, B. D. ; Yamaguchi, A. ; Yamashita, Y. ; Zhang, Z. P. ; Zupanc, A. / Improved measurement of CP-violating parameters in B→ρ+ρ- decays. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2007 ; Vol. 76, No. 1.
@article{4d90c60d95474551935a58dbd45e545a,
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 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.",
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. Bračko 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, {Ju Hwan} and N. Katayama and H. Kichimi and Kim, {H. O.} and Kim, {Y. J.} and K. Kinoshita and S. Korpar and P. Križan and P. Krokovny and R. Kulasiri and R. Kumar and Kuo, {C. C.} and A. Kuzmin and Youngjoon Kwon 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. Starič 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 = "7",
day = "10",
doi = "10.1103/PhysRevD.76.011104",
language = "English",
volume = "76",
journal = "Physical review D: Particles and fields",
issn = "1550-7998",
publisher = "American Physical Society",
number = "1",

}

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, Y, 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

Improved measurement of CP-violating parameters in B→ρ+ρ- decays. / 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.; Cheon, B. G.; Chistov, R.; Cho, I. S.; Choi, Y.; Choi, Y. K.; 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, W. S.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Joshi, N.; Kah, D. H.; Kang, Ju Hwan; Katayama, N.; Kichimi, H.; Kim, H. O.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Križan, P.; Krokovny, P.; Kulasiri, R.; Kumar, R.; Kuo, C. C.; Kuzmin, A.; Kwon, Youngjoon; Lee, J. S.; Lee, M. J.; Lee, S. E.; Lesiak, T.; Limosani, A.; Lin, S. W.; Marlow, D.; Matsumoto, T.; McOnie, S.; Medvedeva, T.; Mitaroff, W.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Mohapatra, D.; Moloney, G. R.; Nakao, M.; Nitoh, O.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schümann, J.; Senyo, K.; Shapkin, M.; Shen, C. P.; Shibuya, H.; Shwartz, B.; Starič, M.; Stoeck, H.; Sumisawa, K.; Sumiyoshi, T.; Takasaki, F.; Tamura, N.; Tanaka, M.; Teramoto, Y.; Tian, X. C.; Trabelsi, K.; Tsukamoto, T.; Uehara, S.; Ueno, K.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Varvell, K. E.; Villa, S.; Vinokurova, A.; Wang, C. C.; Wang, C. H.; Wang, M. Z.; Wang, P.; Watanabe, Y.; Won, E.; Yabsley, B. D.; Yamaguchi, A.; Yamashita, Y.; Zhang, Z. P.; Zupanc, A.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 76, No. 1, 011104, 10.07.2007.

Research output: Contribution to journalArticle

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, Ju Hwan

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, Youngjoon

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

VL - 76

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 1

M1 - 011104

ER -