Measurement of CP violating asymmetries in B0→K+K -KS0 decays with a time-dependent Dalitz approach

Y. Nakahama; K. Sumisawa; H. Aihara; K. Arinstein; T. Aushev; T. Aziz; A. M. Bakich; V. Balagura; K. Belous; V. Bhardwaj; M. Bischofberger; A. Bondar; G. Bonvicini; A. Bozek; M. Bračko; T. E. Browder; P. Chang; Y. Chao; A. Chen; P. Chen; B. G. Cheon; C. C. Chiang; I. S. Cho; Y. Choi; J. Dalseno; A. Das; Z. Doležal; Z. Drásal; A. Drutskoy; S. Eidelman; P. Goldenzweig; B. Golob; J. Haba; K. Hara; K. Hayasaka; M. Hazumi; T. Higuchi; Y. Horii; Y. Hoshi; W. S. Hou; Y. B. Hsiung; H. J. Hyun; T. Iijima; K. Inami; R. Itoh; M. Iwabuchi; M. Iwasaki; Y. Iwasaki; T. Julius; J. H. Kang; P. Kapusta; N. Katayama; H. Kawai; T. Kawasaki; H. Kichimi; H. J. Kim; J. H. Kim; M. J. Kim; B. R. Ko; P. Kodyš; S. Korpar; P. Križan; P. Krokovny; T. Kuhr; T. Kumita; S. H. Kyeong; M. J. Lee; S. H. Lee; Y. Liu; R. Louvot; A. Matyja; S. McOnie; K. Miyabayashi; H. Miyata; Y. Miyazaki; G. B. Mohanty; E. Nakano; M. Nakao; H. Nakazawa; S. Neubauer; S. Nishida; K. Nishimura; O. Nitoh; T. Nozaki; S. Ogawa; T. Ohshima; S. L. Olsen; W. Ostrowicz; H. Ozaki; C. W. Park; H. Park; H. K. Park; R. Pestotnik; M. Petrič; L. E. Piilonen; M. Prim; H. Sahoo; Y. Sakai; O. Schneider; C. Schwanda; A. J. Schwartz; K. Senyo; M. E. Sevior; M. Shapkin; C. P. Shen; J. G. Shiu; B. Shwartz; P. Smerkol; E. Solovieva; S. Stanič; M. Starič; T. Sumiyoshi; Y. Teramoto; K. Trabelsi; S. Uehara; T. Uglov; Y. Unno; S. Uno; Y. Ushiroda; G. Varner; K. E. Varvell; K. Vervink; C. H. Wang; P. Wang; X. L. Wang; Y. Watanabe; R. Wedd; E. Won; Y. Yamashita; Y. Yusa; D. Zander; Z. P. Zhang; V. Zhilich; P. Zhou; T. Zivko; A. Zupanc

doi:10.1103/PhysRevD.82.073011

Measurement of CP violating asymmetries in B0→K⁺K ^-KS0 decays with a time-dependent Dalitz approach

Y. Nakahama, K. Sumisawa, H. Aihara, K. Arinstein, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, P. Chang, Y. Chao, A. Chen, P. ChenB. G. Cheon, C. C. Chiang, I. S. Cho, Y. Choi, J. Dalseno, A. Das, Z. Doležal, Z. Drásal, A. Drutskoy, S. Eidelman, P. Goldenzweig, B. Golob, J. Haba, K. Hara, K. Hayasaka, M. Hazumi, T. Higuchi, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, T. Julius, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, M. J. Kim, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, S. H. Kyeong, M. J. Lee, S. H. Lee, Y. Liu, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, E. Nakano, M. Nakao, H. Nakazawa, S. Neubauer, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. L. Olsen, W. Ostrowicz, H. Ozaki, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Prim, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, B. Shwartz, P. Smerkol, E. Solovieva, S. Stanič, M. Starič, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, Y. Yamashita, Y. Yusa, D. Zander, Z. P. Zhang, V. Zhilich, P. Zhou, T. Zivko, A. Zupanc

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Abstract

We report a measurement of CP violating asymmetries in B0(B ^̄0)→K⁺K^-KS0 decays with a time-dependent Dalitz approach. This analysis is based on a data sample of 657×106 BB̄ pairs accumulated at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e⁺e^- collider. As the result of an unbinned maximum likelihood fit to the selected candidates, the mixing-induced and direct CP violation parameters φ 1eff and A_CP are obtained for B0→φ(1020)KS0, B0→f ₀(980)KS0, and other B0→K⁺K^-KS0 decays. We find four solutions that describe the data. There are φ1eff(B0→φ (1020)KS0)=(32.2±9.0±2.6±1.4)°;φ1eff(B0→φ (1020)KS0)=(26.2±8.8±2.7±1.2)°;φ1eff(B0→φ (1020)KS0)=(27.3±8.6±2.8±1.3)°;andφ1eff(B0→ φ(1020)KS0)=(24.3±8.0±2.9±5.2)°. The values for the CP violating phase in B0→φ(1020)KS0 are similar, but other properties of the Dalitz plot are quite different for the four solutions. These four solutions have consistent φ1eff values for all three B-meson decay channels and none of them deviates significantly from the values measured in B→(cc̄)K0 decays with the currently available statistics. In addition, we find no significant direct CP violation.

Original language	English
Article number	073011
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	82
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.82.073011
State	Published - 26 Oct 2010

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10.1103/PhysRevD.82.073011

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Nakahama, Y., Sumisawa, K., Aihara, H., Arinstein, K., Aushev, T., Aziz, T., Bakich, A. M., Balagura, V., Belous, K., Bhardwaj, V., Bischofberger, M., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Chang, P., Chao, Y., Chen, A., ... Zupanc, A. (2010). Measurement of CP violating asymmetries in B0→K⁺K ^-KS0 decays with a time-dependent Dalitz approach. Physical Review D - Particles, Fields, Gravitation and Cosmology, 82(7), Article 073011. https://doi.org/10.1103/PhysRevD.82.073011

@article{58832dfc1faf4329879733077b1fa7f6,

title = "Measurement of CP violating asymmetries in B0→K+K -KS0 decays with a time-dependent Dalitz approach",

abstract = "We report a measurement of CP violating asymmetries in B0(B{\= }0)→K+K-KS0 decays with a time-dependent Dalitz approach. This analysis is based on a data sample of 657×106 B{\=B} pairs accumulated at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. As the result of an unbinned maximum likelihood fit to the selected candidates, the mixing-induced and direct CP violation parameters φ 1eff and ACP are obtained for B0→φ(1020)KS0, B0→f 0(980)KS0, and other B0→K+K-KS0 decays. We find four solutions that describe the data. There are φ1eff(B0→φ (1020)KS0)=(32.2±9.0±2.6±1.4)°;φ1eff(B0→φ (1020)KS0)=(26.2±8.8±2.7±1.2)°;φ1eff(B0→φ (1020)KS0)=(27.3±8.6±2.8±1.3)°;andφ1eff(B0→ φ(1020)KS0)=(24.3±8.0±2.9±5.2)°. The values for the CP violating phase in B0→φ(1020)KS0 are similar, but other properties of the Dalitz plot are quite different for the four solutions. These four solutions have consistent φ1eff values for all three B-meson decay channels and none of them deviates significantly from the values measured in B→(c{\=c})K0 decays with the currently available statistics. In addition, we find no significant direct CP violation.",

author = "Y. Nakahama and K. Sumisawa and H. Aihara and K. Arinstein and T. Aushev and T. Aziz and Bakich, {A. M.} and V. Balagura and K. Belous and V. Bhardwaj and M. Bischofberger and A. Bondar and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and P. Chang and Y. Chao and A. Chen and P. Chen and Cheon, {B. G.} and Chiang, {C. C.} and Cho, {I. S.} and Y. Choi and J. Dalseno and A. Das and Z. Dole{\v z}al and Z. Dr{\'a}sal and A. Drutskoy and S. Eidelman and P. Goldenzweig and B. Golob and J. Haba and K. Hara and K. Hayasaka and M. Hazumi and T. Higuchi and Y. Horii and Y. Hoshi and Hou, {W. S.} and Hsiung, {Y. B.} and Hyun, {H. J.} and T. Iijima and K. Inami and R. Itoh and M. Iwabuchi and M. Iwasaki and Y. Iwasaki and T. Julius 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, {J. H.} and Kim, {M. J.} and Ko, {B. R.} and P. Kody{\v s} and S. Korpar and P. Kri{\v z}an and P. Krokovny and T. Kuhr and T. Kumita and Kyeong, {S. H.} and Lee, {M. J.} and Lee, {S. H.} and Y. Liu and R. Louvot and A. Matyja and S. McOnie and K. Miyabayashi and H. Miyata and Y. Miyazaki and Mohanty, {G. B.} and E. Nakano and M. Nakao and H. Nakazawa and S. Neubauer and S. Nishida and K. Nishimura and O. Nitoh and T. Nozaki and S. Ogawa and T. Ohshima and Olsen, {S. L.} and W. Ostrowicz and H. Ozaki and Park, {C. W.} and H. Park and Park, {H. K.} and R. Pestotnik and M. Petri{\v c} and Piilonen, {L. E.} and M. Prim and H. Sahoo and Y. Sakai and O. Schneider and C. Schwanda and Schwartz, {A. J.} and K. Senyo and Sevior, {M. E.} and M. Shapkin and Shen, {C. P.} and Shiu, {J. G.} and B. Shwartz and P. Smerkol and E. Solovieva and S. Stani{\v c} and M. Stari{\v c} and T. Sumiyoshi and Y. Teramoto and K. Trabelsi and S. Uehara and T. Uglov and Y. Unno and S. Uno and Y. Ushiroda and G. Varner and Varvell, {K. E.} and K. Vervink and Wang, {C. H.} and P. Wang and Wang, {X. L.} and Y. Watanabe and R. Wedd and E. Won and Y. Yamashita and Y. Yusa and D. Zander and Zhang, {Z. P.} and V. Zhilich and P. Zhou and T. Zivko and A. Zupanc",

year = "2010",

month = oct,

day = "26",

doi = "10.1103/PhysRevD.82.073011",

language = "English",

volume = "82",

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

issn = "1550-7998",

publisher = "American Physical Society",

number = "7",

}

Nakahama, Y, Sumisawa, K, Aihara, H, Arinstein, K, Aushev, T, Aziz, T, Bakich, AM, Balagura, V, Belous, K, Bhardwaj, V, Bischofberger, M, Bondar, A, Bonvicini, G, Bozek, A, Bračko, M, Browder, TE, Chang, P, Chao, Y, Chen, A, Chen, P, Cheon, BG, Chiang, CC, Cho, IS, Choi, Y, Dalseno, J, Das, A, Doležal, Z, Drásal, Z, Drutskoy, A, Eidelman, S, Goldenzweig, P, Golob, B, Haba, J, Hara, K, Hayasaka, K, Hazumi, M, Higuchi, T, Horii, Y, Hoshi, Y, Hou, WS, Hsiung, YB, Hyun, HJ, Iijima, T, Inami, K, Itoh, R, Iwabuchi, M, Iwasaki, M, Iwasaki, Y, Julius, T, Kang, JH, Kapusta, P, Katayama, N, Kawai, H, Kawasaki, T, Kichimi, H, Kim, HJ, Kim, JH, Kim, MJ, Ko, BR, Kodyš, P, Korpar, S, Križan, P, Krokovny, P, Kuhr, T, Kumita, T, Kyeong, SH, Lee, MJ, Lee, SH, Liu, Y, Louvot, R, Matyja, A, McOnie, S, Miyabayashi, K, Miyata, H, Miyazaki, Y, Mohanty, GB, Nakano, E, Nakao, M, Nakazawa, H, Neubauer, S, Nishida, S, Nishimura, K, Nitoh, O, Nozaki, T, Ogawa, S, Ohshima, T, Olsen, SL, Ostrowicz, W, Ozaki, H, Park, CW, Park, H, Park, HK, Pestotnik, R, Petrič, M, Piilonen, LE, Prim, M, Sahoo, H, Sakai, Y, Schneider, O, Schwanda, C, Schwartz, AJ, Senyo, K, Sevior, ME, Shapkin, M, Shen, CP, Shiu, JG, Shwartz, B, Smerkol, P, Solovieva, E, Stanič, S, Starič, M, Sumiyoshi, T, Teramoto, Y, Trabelsi, K, Uehara, S, Uglov, T, Unno, Y, Uno, S, Ushiroda, Y, Varner, G, Varvell, KE, Vervink, K, Wang, CH, Wang, P, Wang, XL, Watanabe, Y, Wedd, R, Won, E, Yamashita, Y, Yusa, Y, Zander, D, Zhang, ZP, Zhilich, V, Zhou, P, Zivko, T & Zupanc, A 2010, 'Measurement of CP violating asymmetries in B0→K⁺K ^-KS0 decays with a time-dependent Dalitz approach', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 82, no. 7, 073011. https://doi.org/10.1103/PhysRevD.82.073011

TY - JOUR

T1 - Measurement of CP violating asymmetries in B0→K+K -KS0 decays with a time-dependent Dalitz approach

AU - Nakahama, Y.

AU - Sumisawa, K.

AU - Aihara, H.

AU - Arinstein, K.

AU - Aushev, T.

AU - Aziz, T.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Belous, K.

AU - Bhardwaj, V.

AU - Bischofberger, M.

AU - Bondar, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, P.

AU - Chao, Y.

AU - Chen, A.

AU - Chen, P.

AU - Cheon, B. G.

AU - Chiang, C. C.

AU - Cho, I. S.

AU - Choi, Y.

AU - Dalseno, J.

AU - Das, A.

AU - Doležal, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Haba, J.

AU - Hara, K.

AU - Hayasaka, K.

AU - Hazumi, M.

AU - Higuchi, T.

AU - Horii, Y.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Itoh, R.

AU - Iwabuchi, M.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Julius, T.

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, J. H.

AU - Kim, M. J.

AU - Ko, B. R.

AU - Kodyš, P.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kumita, T.

AU - Kyeong, S. H.

AU - Lee, M. J.

AU - Lee, S. H.

AU - Liu, Y.

AU - Louvot, R.

AU - Matyja, A.

AU - McOnie, S.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mohanty, G. B.

AU - Nakano, E.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Neubauer, S.

AU - Nishida, S.

AU - Nishimura, K.

AU - Nitoh, O.

AU - Nozaki, T.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Olsen, S. L.

AU - Ostrowicz, W.

AU - Ozaki, H.

AU - Park, C. W.

AU - Park, H.

AU - Park, H. K.

AU - Pestotnik, R.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Prim, M.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Smerkol, P.

AU - Solovieva, E.

AU - Stanič, S.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Teramoto, Y.

AU - Trabelsi, K.

AU - Uehara, S.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Ushiroda, Y.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vervink, K.

AU - Wang, C. H.

AU - Wang, P.

AU - Wang, X. L.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Won, E.

AU - Yamashita, Y.

AU - Yusa, Y.

AU - Zander, D.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhou, P.

AU - Zivko, T.

AU - Zupanc, A.

PY - 2010/10/26

Y1 - 2010/10/26

N2 - We report a measurement of CP violating asymmetries in B0(B ̄0)→K+K-KS0 decays with a time-dependent Dalitz approach. This analysis is based on a data sample of 657×106 BB̄ pairs accumulated at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. As the result of an unbinned maximum likelihood fit to the selected candidates, the mixing-induced and direct CP violation parameters φ 1eff and ACP are obtained for B0→φ(1020)KS0, B0→f 0(980)KS0, and other B0→K+K-KS0 decays. We find four solutions that describe the data. There are φ1eff(B0→φ (1020)KS0)=(32.2±9.0±2.6±1.4)°;φ1eff(B0→φ (1020)KS0)=(26.2±8.8±2.7±1.2)°;φ1eff(B0→φ (1020)KS0)=(27.3±8.6±2.8±1.3)°;andφ1eff(B0→ φ(1020)KS0)=(24.3±8.0±2.9±5.2)°. The values for the CP violating phase in B0→φ(1020)KS0 are similar, but other properties of the Dalitz plot are quite different for the four solutions. These four solutions have consistent φ1eff values for all three B-meson decay channels and none of them deviates significantly from the values measured in B→(cc̄)K0 decays with the currently available statistics. In addition, we find no significant direct CP violation.

AB - We report a measurement of CP violating asymmetries in B0(B ̄0)→K+K-KS0 decays with a time-dependent Dalitz approach. This analysis is based on a data sample of 657×106 BB̄ pairs accumulated at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. As the result of an unbinned maximum likelihood fit to the selected candidates, the mixing-induced and direct CP violation parameters φ 1eff and ACP are obtained for B0→φ(1020)KS0, B0→f 0(980)KS0, and other B0→K+K-KS0 decays. We find four solutions that describe the data. There are φ1eff(B0→φ (1020)KS0)=(32.2±9.0±2.6±1.4)°;φ1eff(B0→φ (1020)KS0)=(26.2±8.8±2.7±1.2)°;φ1eff(B0→φ (1020)KS0)=(27.3±8.6±2.8±1.3)°;andφ1eff(B0→ φ(1020)KS0)=(24.3±8.0±2.9±5.2)°. The values for the CP violating phase in B0→φ(1020)KS0 are similar, but other properties of the Dalitz plot are quite different for the four solutions. These four solutions have consistent φ1eff values for all three B-meson decay channels and none of them deviates significantly from the values measured in B→(cc̄)K0 decays with the currently available statistics. In addition, we find no significant direct CP violation.

UR - http://www.scopus.com/inward/record.url?scp=78650986198&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.82.073011

DO - 10.1103/PhysRevD.82.073011

M3 - Article

AN - SCOPUS:78650986198

SN - 1550-7998

VL - 82

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

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

IS - 7

M1 - 073011

ER -

Measurement of CP violating asymmetries in B0→K⁺K ^-KS0 decays with a time-dependent Dalitz approach

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