Measurement of the time-dependent CP-violating asymmetry in BO→KSOπOγ decays

Y. Ushiroda, K. Sumisawa, M. Hazumi, K. Abe, K. Abe, I. Adachi, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka & 145 others T. E. Browder, M. C. Chang, P. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, S. K. Choi, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, S. Eidelman, F. Fang, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, A. Gorišek, J. Haba, K. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, Ju Hwan Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, S. M. Kim, K. Kinoshita, P. Križan, P. Krokovny, S. Kumar, C. C. Kuo, A. Kusaka, A. Kuzmin, Youngjoon Kwon, G. Leder, T. Lesiak, J. Li, A. Limosani, S. W. Lin, D. Liventsev, F. Mandl, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, T. Nagamine, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, N. Parslow, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sagawa, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, A. J. Schwartz, K. Senyo, M. E. Sevior, T. Shibata, H. Shibuya, J. B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M. Watanabe, Y. Watanabe, Q. L. Xie, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Ying, J. Zhang, L. M. Zhang, Z. P. Zhang, D. Žontar

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We present a new measurement of CP-violation parameters in B0→KS0π0γ decay based on a sample of 275×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One of the B mesons is fully reconstructed in the B0→KS0π0γ decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain SKS0π0γ=-0.58-0.38+0.46(stat)±0.11(syst) and AKS0π0γ=+0.03±0.34(stat)±0.11(syst), for the KS0π0 invariant mass covering the full range up to 1.8GeV/c2. We also measure the CP-violation parameters for the case B0→K*0(→KS0π0)γ and obtain SK*0γ=-0.79-0.50+0.63(stat)±0.10(syst) for AK*0γ fixed at 0.

Original languageEnglish
Article number231601
JournalPhysical Review Letters
Volume94
Issue number23
DOIs
Publication statusPublished - 2005 Jun 17

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CP violation
asymmetry
decay
mesons
coverings
intervals
detectors
products
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Ushiroda, Y., Sumisawa, K., Hazumi, M., Abe, K., Abe, K., Adachi, I., ... Žontar, D. (2005). Measurement of the time-dependent CP-violating asymmetry in BO→KSOπOγ decays. Physical Review Letters, 94(23), [231601]. https://doi.org/10.1103/PhysRevLett.94.231601
Ushiroda, Y. ; Sumisawa, K. ; Hazumi, M. ; Abe, K. ; Abe, K. ; Adachi, I. ; Aihara, H. ; Asano, Y. ; Aulchenko, V. ; Aushev, T. ; Bakich, A. M. ; Bay, A. ; Bedny, I. ; Bitenc, U. ; Bizjak, I. ; Blyth, S. ; Bondar, A. ; Bozek, A. ; Bračko, M. ; Brodzicka, J. ; Browder, T. E. ; Chang, M. C. ; Chang, P. ; Chao, Y. ; Chen, A. ; Chen, K. F. ; Chen, W. T. ; Cheon, B. G. ; Choi, S. K. ; Choi, Y. ; Chuvikov, A. ; Cole, S. ; Dalseno, J. ; Danilov, M. ; Dash, M. ; Dragic, J. ; Eidelman, S. ; Fang, F. ; Fratina, S. ; Gabyshev, N. ; Gershon, T. ; Gokhroo, G. ; Gorišek, A. ; Haba, J. ; Hara, K. ; Hastings, N. C. ; Hayasaka, K. ; Hayashii, H. ; Higuchi, T. ; Hinz, L. ; Hokuue, T. ; Hoshi, Y. ; Hou, S. ; Hou, W. S. ; Hsiung, Y. B. ; Iijima, T. ; Imoto, A. ; Inami, K. ; Ishikawa, A. ; Ishino, H. ; Itoh, R. ; Iwasaki, M. ; Iwasaki, Y. ; Kang, Ju Hwan ; Kang, J. S. ; Kapusta, P. ; Katayama, N. ; Kawai, H. ; Kawasaki, T. ; Khan, H. R. ; Kichimi, H. ; Kim, H. J. ; Kim, S. M. ; Kinoshita, K. ; Križan, P. ; Krokovny, P. ; Kumar, S. ; Kuo, C. C. ; Kusaka, A. ; Kuzmin, A. ; Kwon, Youngjoon ; Leder, G. ; Lesiak, T. ; Li, J. ; Limosani, A. ; Lin, S. W. ; Liventsev, D. ; Mandl, F. ; Matsumoto, T. ; Mikami, Y. ; Mitaroff, W. ; Miyabayashi, K. ; Miyake, H. ; Miyata, H. ; Mohapatra, D. ; Moloney, G. R. ; Nagamine, T. ; Nakano, E. ; Nakao, M. ; Nishida, S. ; Nitoh, O. ; Nozaki, T. ; Ogawa, S. ; Ohshima, T. ; Okabe, T. ; Okuno, S. ; Olsen, S. L. ; Ostrowicz, W. ; Ozaki, H. ; Pakhlov, P. ; Palka, H. ; Park, C. W. ; Parslow, N. ; Peak, L. S. ; Pestotnik, R. ; Piilonen, L. E. ; Sagawa, H. ; Sakai, Y. ; Sato, N. ; Schietinger, T. ; Schneider, O. ; Schwartz, A. J. ; Senyo, K. ; Sevior, M. E. ; Shibata, T. ; Shibuya, H. ; Singh, J. B. ; Somov, A. ; Soni, N. ; Stamen, R. ; Stanič, S. ; Starič, M. ; Sumiyoshi, T. ; Suzuki, S. ; Tajima, O. ; Takasaki, F. ; Tamai, K. ; Tamura, N. ; Tanaka, M. ; Teramoto, Y. ; Tian, X. C. ; Trabelsi, K. ; Tsuboyama, T. ; Tsukamoto, T. ; Uehara, S. ; Uglov, T. ; Uno, S. ; Urquijo, P. ; Varner, G. ; Varvell, K. E. ; Villa, S. ; Wang, C. C. ; Wang, C. H. ; Watanabe, M. ; Watanabe, Y. ; Xie, Q. L. ; Yamaguchi, A. ; Yamashita, Y. ; Yamauchi, M. ; Yang, Heyoung ; Ying, J. ; Zhang, J. ; Zhang, L. M. ; Zhang, Z. P. ; Žontar, D. / Measurement of the time-dependent CP-violating asymmetry in BO→KSOπOγ decays. In: Physical Review Letters. 2005 ; Vol. 94, No. 23.
@article{33ce2a6f4de640dcbb369ed30fa9bddb,
title = "Measurement of the time-dependent CP-violating asymmetry in BO→KSOπOγ decays",
abstract = "We present a new measurement of CP-violation parameters in B0→KS0π0γ decay based on a sample of 275×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One of the B mesons is fully reconstructed in the B0→KS0π0γ decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain SKS0π0γ=-0.58-0.38+0.46(stat)±0.11(syst) and AKS0π0γ=+0.03±0.34(stat)±0.11(syst), for the KS0π0 invariant mass covering the full range up to 1.8GeV/c2. We also measure the CP-violation parameters for the case B0→K*0(→KS0π0)γ and obtain SK*0γ=-0.79-0.50+0.63(stat)±0.10(syst) for AK*0γ fixed at 0.",
author = "Y. Ushiroda and K. Sumisawa and M. Hazumi and K. Abe and K. Abe and I. Adachi and H. Aihara and Y. Asano and V. Aulchenko and T. Aushev and Bakich, {A. M.} and A. Bay and I. Bedny and U. Bitenc and I. Bizjak and S. Blyth and A. Bondar and A. Bozek and M. Bračko 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 Choi, {S. K.} and Y. Choi and A. Chuvikov and S. Cole and J. Dalseno and M. Danilov and M. Dash and J. Dragic and S. Eidelman and F. Fang and S. Fratina and N. Gabyshev and T. Gershon and G. Gokhroo and A. Gorišek and J. Haba and K. Hara and Hastings, {N. C.} and K. Hayasaka and H. Hayashii and T. Higuchi and L. Hinz and T. Hokuue and Y. Hoshi and S. Hou and Hou, {W. S.} and Hsiung, {Y. B.} and T. Iijima and A. Imoto and K. Inami and A. Ishikawa and H. Ishino and R. Itoh and M. Iwasaki and Y. Iwasaki and Kang, {Ju Hwan} and Kang, {J. S.} and P. Kapusta and N. Katayama and H. Kawai and T. Kawasaki and Khan, {H. R.} and H. Kichimi and Kim, {H. J.} and Kim, {S. M.} and K. Kinoshita and P. Križan and P. Krokovny and S. Kumar and Kuo, {C. C.} and A. Kusaka and A. Kuzmin and Youngjoon Kwon and G. Leder and T. Lesiak and J. Li and A. Limosani and Lin, {S. W.} and D. Liventsev and F. Mandl and T. Matsumoto and Y. Mikami and W. Mitaroff and K. Miyabayashi and H. Miyake and H. Miyata and D. Mohapatra and Moloney, {G. R.} and T. Nagamine and E. Nakano and M. Nakao and S. Nishida and O. Nitoh and T. Nozaki and S. Ogawa and T. Ohshima and T. Okabe and S. Okuno and Olsen, {S. L.} and W. Ostrowicz and H. Ozaki and P. Pakhlov and H. Palka and Park, {C. W.} and N. Parslow and Peak, {L. S.} and R. Pestotnik and Piilonen, {L. E.} and H. Sagawa and Y. Sakai and N. Sato and T. Schietinger and O. Schneider and Schwartz, {A. J.} and K. Senyo and Sevior, {M. E.} and T. Shibata and H. Shibuya and Singh, {J. B.} and A. Somov and N. Soni and R. Stamen and S. Stanič and M. Starič and T. Sumiyoshi and S. Suzuki and O. Tajima and F. Takasaki and K. Tamai and N. Tamura and M. Tanaka and Y. Teramoto and Tian, {X. C.} and K. Trabelsi and T. Tsuboyama and T. Tsukamoto and S. Uehara and T. Uglov and S. Uno and P. Urquijo and G. Varner and Varvell, {K. E.} and S. Villa and Wang, {C. C.} and Wang, {C. H.} and M. Watanabe and Y. Watanabe and Xie, {Q. L.} and A. Yamaguchi and Y. Yamashita and M. Yamauchi and Heyoung Yang and J. Ying and J. Zhang and Zhang, {L. M.} and Zhang, {Z. P.} and D. Žontar",
year = "2005",
month = "6",
day = "17",
doi = "10.1103/PhysRevLett.94.231601",
language = "English",
volume = "94",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "23",

}

Ushiroda, Y, Sumisawa, K, Hazumi, M, Abe, K, Abe, K, Adachi, I, Aihara, H, Asano, Y, Aulchenko, V, Aushev, T, Bakich, AM, Bay, A, Bedny, I, Bitenc, U, Bizjak, I, Blyth, S, Bondar, A, Bozek, A, Bračko, M, Brodzicka, J, Browder, TE, Chang, MC, Chang, P, Chao, Y, Chen, A, Chen, KF, Chen, WT, Cheon, BG, Choi, SK, Choi, Y, Chuvikov, A, Cole, S, Dalseno, J, Danilov, M, Dash, M, Dragic, J, Eidelman, S, Fang, F, Fratina, S, Gabyshev, N, Gershon, T, Gokhroo, G, Gorišek, A, Haba, J, Hara, K, Hastings, NC, Hayasaka, K, Hayashii, H, Higuchi, T, Hinz, L, Hokuue, T, Hoshi, Y, Hou, S, Hou, WS, Hsiung, YB, Iijima, T, Imoto, A, Inami, K, Ishikawa, A, Ishino, H, Itoh, R, Iwasaki, M, Iwasaki, Y, Kang, JH, Kang, JS, Kapusta, P, Katayama, N, Kawai, H, Kawasaki, T, Khan, HR, Kichimi, H, Kim, HJ, Kim, SM, Kinoshita, K, Križan, P, Krokovny, P, Kumar, S, Kuo, CC, Kusaka, A, Kuzmin, A, Kwon, Y, Leder, G, Lesiak, T, Li, J, Limosani, A, Lin, SW, Liventsev, D, Mandl, F, Matsumoto, T, Mikami, Y, Mitaroff, W, Miyabayashi, K, Miyake, H, Miyata, H, Mohapatra, D, Moloney, GR, Nagamine, T, Nakano, E, Nakao, M, Nishida, S, Nitoh, O, Nozaki, T, Ogawa, S, Ohshima, T, Okabe, T, Okuno, S, Olsen, SL, Ostrowicz, W, Ozaki, H, Pakhlov, P, Palka, H, Park, CW, Parslow, N, Peak, LS, Pestotnik, R, Piilonen, LE, Sagawa, H, Sakai, Y, Sato, N, Schietinger, T, Schneider, O, Schwartz, AJ, Senyo, K, Sevior, ME, Shibata, T, Shibuya, H, Singh, JB, Somov, A, Soni, N, Stamen, R, Stanič, S, Starič, M, Sumiyoshi, T, Suzuki, S, Tajima, O, Takasaki, F, Tamai, K, Tamura, N, Tanaka, M, Teramoto, Y, Tian, XC, Trabelsi, K, Tsuboyama, T, Tsukamoto, T, Uehara, S, Uglov, T, Uno, S, Urquijo, P, Varner, G, Varvell, KE, Villa, S, Wang, CC, Wang, CH, Watanabe, M, Watanabe, Y, Xie, QL, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Yang, H, Ying, J, Zhang, J, Zhang, LM, Zhang, ZP & Žontar, D 2005, 'Measurement of the time-dependent CP-violating asymmetry in BO→KSOπOγ decays', Physical Review Letters, vol. 94, no. 23, 231601. https://doi.org/10.1103/PhysRevLett.94.231601

Measurement of the time-dependent CP-violating asymmetry in BO→KSOπOγ decays. / Ushiroda, Y.; Sumisawa, K.; Hazumi, M.; Abe, K.; Abe, K.; Adachi, I.; Aihara, H.; Asano, Y.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Bay, A.; Bedny, I.; Bitenc, U.; Bizjak, I.; Blyth, S.; Bondar, A.; Bozek, A.; Bračko, M.; Brodzicka, J.; Browder, T. E.; Chang, M. C.; Chang, P.; Chao, Y.; Chen, A.; Chen, K. F.; Chen, W. T.; Cheon, B. G.; Choi, S. K.; Choi, Y.; Chuvikov, A.; Cole, S.; Dalseno, J.; Danilov, M.; Dash, M.; Dragic, J.; Eidelman, S.; Fang, F.; Fratina, S.; Gabyshev, N.; Gershon, T.; Gokhroo, G.; Gorišek, A.; Haba, J.; Hara, K.; Hastings, N. C.; Hayasaka, K.; Hayashii, H.; Higuchi, T.; Hinz, L.; Hokuue, T.; Hoshi, Y.; Hou, S.; Hou, W. S.; Hsiung, Y. B.; Iijima, T.; Imoto, A.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Kang, Ju Hwan; Kang, J. S.; Kapusta, P.; Katayama, N.; Kawai, H.; Kawasaki, T.; Khan, H. R.; Kichimi, H.; Kim, H. J.; Kim, S. M.; Kinoshita, K.; Križan, P.; Krokovny, P.; Kumar, S.; Kuo, C. C.; Kusaka, A.; Kuzmin, A.; Kwon, Youngjoon; Leder, G.; Lesiak, T.; Li, J.; Limosani, A.; Lin, S. W.; Liventsev, D.; Mandl, F.; Matsumoto, T.; Mikami, Y.; Mitaroff, W.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Mohapatra, D.; Moloney, G. R.; Nagamine, T.; Nakano, E.; Nakao, M.; Nishida, S.; Nitoh, O.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okabe, T.; Okuno, S.; Olsen, S. L.; Ostrowicz, W.; Ozaki, H.; Pakhlov, P.; Palka, H.; Park, C. W.; Parslow, N.; Peak, L. S.; Pestotnik, R.; Piilonen, L. E.; Sagawa, H.; Sakai, Y.; Sato, N.; Schietinger, T.; Schneider, O.; Schwartz, A. J.; Senyo, K.; Sevior, M. E.; Shibata, T.; Shibuya, H.; Singh, J. B.; Somov, A.; Soni, N.; Stamen, R.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Suzuki, S.; Tajima, O.; Takasaki, F.; Tamai, K.; Tamura, N.; Tanaka, M.; Teramoto, Y.; Tian, X. C.; Trabelsi, K.; Tsuboyama, T.; Tsukamoto, T.; Uehara, S.; Uglov, T.; Uno, S.; Urquijo, P.; Varner, G.; Varvell, K. E.; Villa, S.; Wang, C. C.; Wang, C. H.; Watanabe, M.; Watanabe, Y.; Xie, Q. L.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Yang, Heyoung; Ying, J.; Zhang, J.; Zhang, L. M.; Zhang, Z. P.; Žontar, D.

In: Physical Review Letters, Vol. 94, No. 23, 231601, 17.06.2005.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Measurement of the time-dependent CP-violating asymmetry in BO→KSOπOγ decays

AU - Ushiroda, Y.

AU - Sumisawa, K.

AU - Hazumi, M.

AU - Abe, K.

AU - Abe, K.

AU - Adachi, I.

AU - Aihara, H.

AU - Asano, Y.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Bay, A.

AU - Bedny, I.

AU - Bitenc, U.

AU - Bizjak, I.

AU - Blyth, S.

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 - Choi, S. K.

AU - Choi, Y.

AU - Chuvikov, A.

AU - Cole, S.

AU - Dalseno, J.

AU - Danilov, M.

AU - Dash, M.

AU - Dragic, J.

AU - Eidelman, S.

AU - Fang, F.

AU - Fratina, S.

AU - Gabyshev, N.

AU - Gershon, T.

AU - Gokhroo, G.

AU - Gorišek, A.

AU - Haba, J.

AU - Hara, K.

AU - Hastings, N. C.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Higuchi, T.

AU - Hinz, L.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, S.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Iijima, T.

AU - Imoto, A.

AU - Inami, K.

AU - Ishikawa, A.

AU - Ishino, H.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Kang, Ju Hwan

AU - Kang, J. S.

AU - Kapusta, P.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Khan, H. R.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, S. M.

AU - Kinoshita, K.

AU - Križan, P.

AU - Krokovny, P.

AU - Kumar, S.

AU - Kuo, C. C.

AU - Kusaka, A.

AU - Kuzmin, A.

AU - Kwon, Youngjoon

AU - Leder, G.

AU - Lesiak, T.

AU - Li, J.

AU - Limosani, A.

AU - Lin, S. W.

AU - Liventsev, D.

AU - Mandl, F.

AU - Matsumoto, T.

AU - Mikami, Y.

AU - Mitaroff, W.

AU - Miyabayashi, K.

AU - Miyake, H.

AU - Miyata, H.

AU - Mohapatra, D.

AU - Moloney, G. R.

AU - Nagamine, T.

AU - Nakano, E.

AU - Nakao, M.

AU - Nishida, S.

AU - Nitoh, O.

AU - Nozaki, T.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okabe, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Ostrowicz, W.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Palka, H.

AU - Park, C. W.

AU - Parslow, N.

AU - Peak, L. S.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Sagawa, H.

AU - Sakai, Y.

AU - Sato, N.

AU - Schietinger, T.

AU - Schneider, O.

AU - Schwartz, A. J.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shibata, T.

AU - Shibuya, H.

AU - Singh, J. B.

AU - Somov, A.

AU - Soni, N.

AU - Stamen, R.

AU - Stanič, S.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Suzuki, S.

AU - Tajima, O.

AU - Takasaki, F.

AU - Tamai, K.

AU - Tamura, N.

AU - Tanaka, M.

AU - Teramoto, Y.

AU - Tian, X. C.

AU - Trabelsi, K.

AU - Tsuboyama, T.

AU - Tsukamoto, T.

AU - Uehara, S.

AU - Uglov, T.

AU - Uno, S.

AU - Urquijo, P.

AU - Varner, G.

AU - Varvell, K. E.

AU - Villa, S.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Watanabe, M.

AU - Watanabe, Y.

AU - Xie, Q. L.

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Yang, Heyoung

AU - Ying, J.

AU - Zhang, J.

AU - Zhang, L. M.

AU - Zhang, Z. P.

AU - Žontar, D.

PY - 2005/6/17

Y1 - 2005/6/17

N2 - We present a new measurement of CP-violation parameters in B0→KS0π0γ decay based on a sample of 275×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One of the B mesons is fully reconstructed in the B0→KS0π0γ decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain SKS0π0γ=-0.58-0.38+0.46(stat)±0.11(syst) and AKS0π0γ=+0.03±0.34(stat)±0.11(syst), for the KS0π0 invariant mass covering the full range up to 1.8GeV/c2. We also measure the CP-violation parameters for the case B0→K*0(→KS0π0)γ and obtain SK*0γ=-0.79-0.50+0.63(stat)±0.10(syst) for AK*0γ fixed at 0.

AB - We present a new measurement of CP-violation parameters in B0→KS0π0γ decay based on a sample of 275×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One of the B mesons is fully reconstructed in the B0→KS0π0γ decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain SKS0π0γ=-0.58-0.38+0.46(stat)±0.11(syst) and AKS0π0γ=+0.03±0.34(stat)±0.11(syst), for the KS0π0 invariant mass covering the full range up to 1.8GeV/c2. We also measure the CP-violation parameters for the case B0→K*0(→KS0π0)γ and obtain SK*0γ=-0.79-0.50+0.63(stat)±0.10(syst) for AK*0γ fixed at 0.

UR - http://www.scopus.com/inward/record.url?scp=27744554904&partnerID=8YFLogxK

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U2 - 10.1103/PhysRevLett.94.231601

DO - 10.1103/PhysRevLett.94.231601

M3 - Article

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 23

M1 - 231601

ER -