Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0

V. Chobanova; J. Dalseno; C. Kiesling; I. Adachi; H. Aihara; D. M. Asner; V. Aulchenko; T. Aushev; T. Aziz; A. M. Bakich; A. Bala; Y. Ban; K. Belous; B. Bhuyan; A. Bobrov; G. Bonvicini; A. Bozek; M. Bračko; T. E. Browder; D. Červenkov; V. Chekelian; A. Chen; B. G. Cheon; K. Chilikin; R. Chistov; K. Cho; Y. Choi; D. Cinabro; M. Danilov; Z. DoleŽal; Z. Drásal; D. Dutta; K. Dutta; S. Eidelman; S. Esen; H. Farhat; J. E. Fast; T. Ferber; V. Gaur; N. Gabyshev; S. Ganguly; A. Garmash; R. Gillard; Y. M. Goh; B. Golob; J. Haba; K. Hayasaka; X. H. He; Y. Horii; Y. Hoshi; W. S. Hou; Y. B. Hsiung; H. J. Hyun; T. Iijima; K. Inami; A. Ishikawa; Y. Iwasaki; T. Iwashita; I. Jaegle; T. Julius; J. H. Kang; E. Kato; H. Kawai; T. Kawasaki; D. Y. Kim; H. J. Kim; J. B. Kim; J. H. Kim; M. J. Kim; Y. J. Kim; K. Kinoshita; J. Klucar; B. R. Ko; P. Kodyš; S. Korpar; P. Krokovny; B. Kronenbitter; T. Kuhr; T. Kumita; A. Kuzmin; J. S. Lange; S. H. Lee; J. Li; Y. Li; L. Li Gioi; J. Libby; D. Liventsev; P. Lukin; D. Matvienko; K. Miyabayashi; H. Miyake; H. Miyata; R. Mizuk; G. B. Mohanty; A. Moll; N. Muramatsu; R. Mussa; E. Nakano; M. Nakao; Z. Natkaniec; M. Nayak; E. Nedelkovska; C. Ng; N. K. Nisar; S. Nishida; O. Nitoh; S. Ogawa; S. Okuno; P. Pakhlov; G. Pakhlova; C. W. Park; H. Park; H. K. Park; T. K. Pedlar; T. Peng; R. Pestotnik; M. Petrič; L. E. Piilonen; M. Ritter; M. Röhrken; A. Rostomyan; H. Sahoo; T. Saito; Y. Sakai; L. Santelj; T. Sanuki; V. Savinov; O. Schneider; A. J. Schwartz; D. Semmler; K. Senyo; O. Seon; M. E. Sevior; M. Shapkin; T. A. Shibata; J. G. Shiu; B. Shwartz; A. Sibidanov; F. Simon; Y. S. Sohn; S. Stanič; M. Starič; M. Steder; K. Sumisawa; T. Sumiyoshi; U. Tamponi; G. Tatishvili; Y. Teramoto; K. Trabelsi; M. Uchida; T. Uglov; Y. Unno; S. Uno; C. Van Hulse; P. Vanhoefer; G. Varner; K. E. Varvell; A. Vinokurova; V. Vorobyev; M. N. Wagner; C. H. Wang; M. Z. Wang; P. Wang; M. Watanabe; Y. Watanabe; K. M. Williams; E. Won; H. Yamamoto; Y. Yamashita; S. Yashchenko; Z. P. Zhang; V. Zhilich; V. Zhulanov; A. Zupanc

doi:10.1103/PhysRevD.90.012002

Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0

V. Chobanova, J. Dalseno, C. Kiesling, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bala, Y. Ban, K. Belous, B. Bhuyan, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. ČervenkovV. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, Y. Choi, D. Cinabro, M. Danilov, Z. DoleŽal, Z. Drásal, D. Dutta, K. Dutta, S. Eidelman, S. Esen, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, X. H. He, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, E. Kato, H. Kawai, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, J. S. Lange, S. H. Lee, J. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, C. Ng, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, T. Peng, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Ritter, M. Röhrken, A. Rostomyan, H. Sahoo, T. Saito, Y. Sakai, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, A. J. Schwartz, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, T. A. Shibata, J. G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. S. Sohn, S. Stanič, M. Starič, M. Steder, K. Sumisawa, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, S. Yashchenko, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

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

13 Citations (Scopus)

Abstract

We present a measurement of the branching fractions and charge-parity-(CP-)violating parameters in B→ωK decays. The results are obtained from the final data sample containing 772×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fractions B(B0→ωK0)=(4.5±0.4(stat)±0.3(syst))×10-6, B(B+→ωK+)=(6.8±0.4(stat)±0.4(syst))×10-6 which are in agreement with their respective current world averages. For the CP-violating parameters, we obtain AωKS0=-0.36±0.19(stat)±0. 05(syst),SωKS0=+0.91±0.32(stat)±0.05(syst),AωK+=-0. 03±0.04(stat)±0.01(syst), where A and S represent the direct and mixing-induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B+→ωK+; however, we obtain the first evidence of CP violation in the B0→ωKS0 decay channel at the level of 3.1 standard deviations.

Original language	English
Article number	012002
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	90
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.90.012002
Publication status	Published - 2014 Jul 9

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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Chobanova, V., Dalseno, J., Kiesling, C., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Aziz, T., Bakich, A. M., Bala, A., Ban, Y., Belous, K., Bhuyan, B., Bobrov, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., ... Zupanc, A. (2014). Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0. Physical Review D - Particles, Fields, Gravitation and Cosmology, 90(1), [012002]. https://doi.org/10.1103/PhysRevD.90.012002

Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0. / Chobanova, V.; Dalseno, J.; Kiesling, C.; Adachi, I.; Aihara, H.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Aziz, T.; Bakich, A. M.; Bala, A.; Ban, Y.; Belous, K.; Bhuyan, B.; Bobrov, A.; Bonvicini, G.; Bozek, A.; Bračko, M.; Browder, T. E.; Červenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Chistov, R.; Cho, K.; Choi, Y.; Cinabro, D.; Danilov, M.; DoleŽal, Z.; Drásal, Z.; Dutta, D.; Dutta, K.; Eidelman, S.; Esen, S.; Farhat, H.; Fast, J. E.; Ferber, T.; Gaur, V.; Gabyshev, N.; Ganguly, S.; Garmash, A.; Gillard, R.; Goh, Y. M.; Golob, B.; Haba, J.; Hayasaka, K.; He, X. H.; Horii, Y.; Hoshi, Y.; Hou, W. S.; Hsiung, Y. B.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Iwasaki, Y.; Iwashita, T.; Jaegle, I.; Julius, T.; Kang, J. H.; Kato, E.; Kawai, H.; Kawasaki, T.; Kim, D. Y.; Kim, H. J.; Kim, J. B.; Kim, J. H.; Kim, M. J.; Kim, Y. J.; Kinoshita, K.; Klucar, J.; Ko, B. R.; Kodyš, P.; Korpar, S.; Krokovny, P.; Kronenbitter, B.; Kuhr, T.; Kumita, T.; Kuzmin, A.; Lange, J. S.; Lee, S. H.; Li, J.; Li, Y.; Li Gioi, L.; Libby, J.; Liventsev, D.; Lukin, P.; Matvienko, D.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moll, A.; Muramatsu, N.; Mussa, R.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Nayak, M.; Nedelkovska, E.; Ng, C.; Nisar, N. K.; Nishida, S.; Nitoh, O.; Ogawa, S.; Okuno, S.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H.; Park, H. K.; Pedlar, T. K.; Peng, T.; Pestotnik, R.; Petrič, M.; Piilonen, L. E.; Ritter, M.; Röhrken, M.; Rostomyan, A.; Sahoo, H.; Saito, T.; Sakai, Y.; Santelj, L.; Sanuki, T.; Savinov, V.; Schneider, O.; Schwartz, A. J.; Semmler, D.; Senyo, K.; Seon, O.; Sevior, M. E.; Shapkin, M.; Shibata, T. A.; Shiu, J. G.; Shwartz, B.; Sibidanov, A.; Simon, F.; Sohn, Y. S.; Stanič, S.; Starič, M.; Steder, M.; Sumisawa, K.; Sumiyoshi, T.; Tamponi, U.; Tatishvili, G.; Teramoto, Y.; Trabelsi, K.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Van Hulse, C.; Vanhoefer, P.; Varner, G.; Varvell, K. E.; Vinokurova, A.; Vorobyev, V.; Wagner, M. N.; Wang, C. H.; Wang, M. Z.; Wang, P.; Watanabe, M.; Watanabe, Y.; Williams, K. M.; Won, E.; Yamamoto, H.; Yamashita, Y.; Yashchenko, S.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 90, No. 1, 012002, 09.07.2014.

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

Chobanova, V, Dalseno, J, Kiesling, C, Adachi, I, Aihara, H, Asner, DM, Aulchenko, V, Aushev, T, Aziz, T, Bakich, AM, Bala, A, Ban, Y, Belous, K, Bhuyan, B, Bobrov, A, Bonvicini, G, Bozek, A, Bračko, M, Browder, TE, Červenkov, D, Chekelian, V, Chen, A, Cheon, BG, Chilikin, K, Chistov, R, Cho, K, Choi, Y, Cinabro, D, Danilov, M, DoleŽal, Z, Drásal, Z, Dutta, D, Dutta, K, Eidelman, S, Esen, S, Farhat, H, Fast, JE, Ferber, T, Gaur, V, Gabyshev, N, Ganguly, S, Garmash, A, Gillard, R, Goh, YM, Golob, B, Haba, J, Hayasaka, K, He, XH, Horii, Y, Hoshi, Y, Hou, WS, Hsiung, YB, Hyun, HJ, Iijima, T, Inami, K, Ishikawa, A, Iwasaki, Y, Iwashita, T, Jaegle, I, Julius, T, Kang, JH, Kato, E, Kawai, H, Kawasaki, T, Kim, DY, Kim, HJ, Kim, JB, Kim, JH, Kim, MJ, Kim, YJ, Kinoshita, K, Klucar, J, Ko, BR, Kodyš, P, Korpar, S, Krokovny, P, Kronenbitter, B, Kuhr, T, Kumita, T, Kuzmin, A, Lange, JS, Lee, SH, Li, J, Li, Y, Li Gioi, L, Libby, J, Liventsev, D, Lukin, P, Matvienko, D, Miyabayashi, K, Miyake, H, Miyata, H, Mizuk, R, Mohanty, GB, Moll, A, Muramatsu, N, Mussa, R, Nakano, E, Nakao, M, Natkaniec, Z, Nayak, M, Nedelkovska, E, Ng, C, Nisar, NK, Nishida, S, Nitoh, O, Ogawa, S, Okuno, S, Pakhlov, P, Pakhlova, G, Park, CW, Park, H, Park, HK, Pedlar, TK, Peng, T, Pestotnik, R, Petrič, M, Piilonen, LE, Ritter, M, Röhrken, M, Rostomyan, A, Sahoo, H, Saito, T, Sakai, Y, Santelj, L, Sanuki, T, Savinov, V, Schneider, O, Schwartz, AJ, Semmler, D, Senyo, K, Seon, O, Sevior, ME, Shapkin, M, Shibata, TA, Shiu, JG, Shwartz, B, Sibidanov, A, Simon, F, Sohn, YS, Stanič, S, Starič, M, Steder, M, Sumisawa, K, Sumiyoshi, T, Tamponi, U, Tatishvili, G, Teramoto, Y, Trabelsi, K, Uchida, M, Uglov, T, Unno, Y, Uno, S, Van Hulse, C, Vanhoefer, P, Varner, G, Varvell, KE, Vinokurova, A, Vorobyev, V, Wagner, MN, Wang, CH, Wang, MZ, Wang, P, Watanabe, M, Watanabe, Y, Williams, KM, Won, E, Yamamoto, H, Yamashita, Y, Yashchenko, S, Zhang, ZP, Zhilich, V, Zhulanov, V & Zupanc, A 2014, 'Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 90, no. 1, 012002. https://doi.org/10.1103/PhysRevD.90.012002

Chobanova, V. ; Dalseno, J. ; Kiesling, C. ; Adachi, I. ; Aihara, H. ; Asner, D. M. ; Aulchenko, V. ; Aushev, T. ; Aziz, T. ; Bakich, A. M. ; Bala, A. ; Ban, Y. ; Belous, K. ; Bhuyan, B. ; Bobrov, A. ; Bonvicini, G. ; Bozek, A. ; Bračko, M. ; Browder, T. E. ; Červenkov, D. ; Chekelian, V. ; Chen, A. ; Cheon, B. G. ; Chilikin, K. ; Chistov, R. ; Cho, K. ; Choi, Y. ; Cinabro, D. ; Danilov, M. ; DoleŽal, Z. ; Drásal, Z. ; Dutta, D. ; Dutta, K. ; Eidelman, S. ; Esen, S. ; Farhat, H. ; Fast, J. E. ; Ferber, T. ; Gaur, V. ; Gabyshev, N. ; Ganguly, S. ; Garmash, A. ; Gillard, R. ; Goh, Y. M. ; Golob, B. ; Haba, J. ; Hayasaka, K. ; He, X. H. ; Horii, Y. ; Hoshi, Y. ; Hou, W. S. ; Hsiung, Y. B. ; Hyun, H. J. ; Iijima, T. ; Inami, K. ; Ishikawa, A. ; Iwasaki, Y. ; Iwashita, T. ; Jaegle, I. ; Julius, T. ; Kang, J. H. ; Kato, E. ; Kawai, H. ; Kawasaki, T. ; Kim, D. Y. ; Kim, H. J. ; Kim, J. B. ; Kim, J. H. ; Kim, M. J. ; Kim, Y. J. ; Kinoshita, K. ; Klucar, J. ; Ko, B. R. ; Kodyš, P. ; Korpar, S. ; Krokovny, P. ; Kronenbitter, B. ; Kuhr, T. ; Kumita, T. ; Kuzmin, A. ; Lange, J. S. ; Lee, S. H. ; Li, J. ; Li, Y. ; Li Gioi, L. ; Libby, J. ; Liventsev, D. ; Lukin, P. ; Matvienko, D. ; Miyabayashi, K. ; Miyake, H. ; Miyata, H. ; Mizuk, R. ; Mohanty, G. B. ; Moll, A. ; Muramatsu, N. ; Mussa, R. ; Nakano, E. ; Nakao, M. ; Natkaniec, Z. ; Nayak, M. ; Nedelkovska, E. ; Ng, C. ; Nisar, N. K. ; Nishida, S. ; Nitoh, O. ; Ogawa, S. ; Okuno, S. ; Pakhlov, P. ; Pakhlova, G. ; Park, C. W. ; Park, H. ; Park, H. K. ; Pedlar, T. K. ; Peng, T. ; Pestotnik, R. ; Petrič, M. ; Piilonen, L. E. ; Ritter, M. ; Röhrken, M. ; Rostomyan, A. ; Sahoo, H. ; Saito, T. ; Sakai, Y. ; Santelj, L. ; Sanuki, T. ; Savinov, V. ; Schneider, O. ; Schwartz, A. J. ; Semmler, D. ; Senyo, K. ; Seon, O. ; Sevior, M. E. ; Shapkin, M. ; Shibata, T. A. ; Shiu, J. G. ; Shwartz, B. ; Sibidanov, A. ; Simon, F. ; Sohn, Y. S. ; Stanič, S. ; Starič, M. ; Steder, M. ; Sumisawa, K. ; Sumiyoshi, T. ; Tamponi, U. ; Tatishvili, G. ; Teramoto, Y. ; Trabelsi, K. ; Uchida, M. ; Uglov, T. ; Unno, Y. ; Uno, S. ; Van Hulse, C. ; Vanhoefer, P. ; Varner, G. ; Varvell, K. E. ; Vinokurova, A. ; Vorobyev, V. ; Wagner, M. N. ; Wang, C. H. ; Wang, M. Z. ; Wang, P. ; Watanabe, M. ; Watanabe, Y. ; Williams, K. M. ; Won, E. ; Yamamoto, H. ; Yamashita, Y. ; Yashchenko, S. ; Zhang, Z. P. ; Zhilich, V. ; Zhulanov, V. ; Zupanc, A. / Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2014 ; Vol. 90, No. 1.

@article{09280d3da0a8464fa6dc1c9ab33126a3,

title = "Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0",

abstract = "We present a measurement of the branching fractions and charge-parity-(CP-)violating parameters in B→ωK decays. The results are obtained from the final data sample containing 772×106 B{\=B} pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fractions B(B0→ωK0)=(4.5±0.4(stat)±0.3(syst))×10-6, B(B+→ωK+)=(6.8±0.4(stat)±0.4(syst))×10-6 which are in agreement with their respective current world averages. For the CP-violating parameters, we obtain AωKS0=-0.36±0.19(stat)±0. 05(syst),SωKS0=+0.91±0.32(stat)±0.05(syst),AωK+=-0. 03±0.04(stat)±0.01(syst), where A and S represent the direct and mixing-induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B+→ωK+; however, we obtain the first evidence of CP violation in the B0→ωKS0 decay channel at the level of 3.1 standard deviations.",

author = "V. Chobanova and J. Dalseno and C. Kiesling and I. Adachi and H. Aihara and Asner, {D. M.} and V. Aulchenko and T. Aushev and T. Aziz and Bakich, {A. M.} and A. Bala and Y. Ban and K. Belous and B. Bhuyan and A. Bobrov and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and D. {\v C}ervenkov and V. Chekelian and A. Chen and Cheon, {B. G.} and K. Chilikin and R. Chistov and K. Cho and Y. Choi and D. Cinabro and M. Danilov and Z. Dole{\v Z}al and Z. Dr{\'a}sal and D. Dutta and K. Dutta and S. Eidelman and S. Esen and H. Farhat and Fast, {J. E.} and T. Ferber and V. Gaur and N. Gabyshev and S. Ganguly and A. Garmash and R. Gillard and Goh, {Y. M.} and B. Golob and J. Haba and K. Hayasaka and He, {X. H.} 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 A. Ishikawa and Y. Iwasaki and T. Iwashita and I. Jaegle and T. Julius and Kang, {J. H.} and E. Kato and H. Kawai and T. Kawasaki and Kim, {D. Y.} and Kim, {H. J.} and Kim, {J. B.} and Kim, {J. H.} and Kim, {M. J.} and Kim, {Y. J.} and K. Kinoshita and J. Klucar and Ko, {B. R.} and P. Kody{\v s} and S. Korpar and P. Krokovny and B. Kronenbitter and T. Kuhr and T. Kumita and A. Kuzmin and Lange, {J. S.} and Lee, {S. H.} and J. Li and Y. Li and {Li Gioi}, L. and J. Libby and D. Liventsev and P. Lukin and D. Matvienko and K. Miyabayashi and H. Miyake and H. Miyata and R. Mizuk and Mohanty, {G. B.} and A. Moll and N. Muramatsu and R. Mussa and E. Nakano and M. Nakao and Z. Natkaniec and M. Nayak and E. Nedelkovska and C. Ng and Nisar, {N. K.} and S. Nishida and O. Nitoh and S. Ogawa and S. Okuno and P. Pakhlov and G. Pakhlova and Park, {C. W.} and H. Park and Park, {H. K.} and Pedlar, {T. K.} and T. Peng and R. Pestotnik and M. Petri{\v c} and Piilonen, {L. E.} and M. Ritter and M. R{\"o}hrken and A. Rostomyan and H. Sahoo and T. Saito and Y. Sakai and L. Santelj and T. Sanuki and V. Savinov and O. Schneider and Schwartz, {A. J.} and D. Semmler and K. Senyo and O. Seon and Sevior, {M. E.} and M. Shapkin and Shibata, {T. A.} and Shiu, {J. G.} and B. Shwartz and A. Sibidanov and F. Simon and Sohn, {Y. S.} and S. Stani{\v c} and M. Stari{\v c} and M. Steder and K. Sumisawa and T. Sumiyoshi and U. Tamponi and G. Tatishvili and Y. Teramoto and K. Trabelsi and M. Uchida and T. Uglov and Y. Unno and S. Uno and {Van Hulse}, C. and P. Vanhoefer and G. Varner and Varvell, {K. E.} and A. Vinokurova and V. Vorobyev and Wagner, {M. N.} and Wang, {C. H.} and Wang, {M. Z.} and P. Wang and M. Watanabe and Y. Watanabe and Williams, {K. M.} and E. Won and H. Yamamoto and Y. Yamashita and S. Yashchenko and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and A. Zupanc",

year = "2014",

month = jul,

day = "9",

doi = "10.1103/PhysRevD.90.012002",

language = "English",

volume = "90",

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

issn = "1550-7998",

number = "1",

}

TY - JOUR

T1 - Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0

AU - Chobanova, V.

AU - Dalseno, J.

AU - Kiesling, C.

AU - Adachi, I.

AU - Aihara, H.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Aziz, T.

AU - Bakich, A. M.

AU - Bala, A.

AU - Ban, Y.

AU - Belous, K.

AU - Bhuyan, B.

AU - Bobrov, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Červenkov, D.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Chistov, R.

AU - Cho, K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Danilov, M.

AU - DoleŽal, Z.

AU - Drásal, Z.

AU - Dutta, D.

AU - Dutta, K.

AU - Eidelman, S.

AU - Esen, S.

AU - Farhat, H.

AU - Fast, J. E.

AU - Ferber, T.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Ganguly, S.

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PY - 2014/7/9

Y1 - 2014/7/9

N2 - We present a measurement of the branching fractions and charge-parity-(CP-)violating parameters in B→ωK decays. The results are obtained from the final data sample containing 772×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fractions B(B0→ωK0)=(4.5±0.4(stat)±0.3(syst))×10-6, B(B+→ωK+)=(6.8±0.4(stat)±0.4(syst))×10-6 which are in agreement with their respective current world averages. For the CP-violating parameters, we obtain AωKS0=-0.36±0.19(stat)±0. 05(syst),SωKS0=+0.91±0.32(stat)±0.05(syst),AωK+=-0. 03±0.04(stat)±0.01(syst), where A and S represent the direct and mixing-induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B+→ωK+; however, we obtain the first evidence of CP violation in the B0→ωKS0 decay channel at the level of 3.1 standard deviations.

AB - We present a measurement of the branching fractions and charge-parity-(CP-)violating parameters in B→ωK decays. The results are obtained from the final data sample containing 772×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fractions B(B0→ωK0)=(4.5±0.4(stat)±0.3(syst))×10-6, B(B+→ωK+)=(6.8±0.4(stat)±0.4(syst))×10-6 which are in agreement with their respective current world averages. For the CP-violating parameters, we obtain AωKS0=-0.36±0.19(stat)±0. 05(syst),SωKS0=+0.91±0.32(stat)±0.05(syst),AωK+=-0. 03±0.04(stat)±0.01(syst), where A and S represent the direct and mixing-induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B+→ωK+; however, we obtain the first evidence of CP violation in the B0→ωKS0 decay channel at the level of 3.1 standard deviations.

UR - http://www.scopus.com/inward/record.url?scp=84904293490&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904293490&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.90.012002

DO - 10.1103/PhysRevD.90.012002

M3 - Article

AN - SCOPUS:84904293490

VL - 90

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

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

SN - 1550-7998

IS - 1

M1 - 012002

ER -