Evidence for the suppressed decay B-→DK-, D→K+ π-π0

M. Nayak; J. Libby; K. Trabelsi; I. Adachi; H. Aihara; D. M. Asner; T. Aushev; A. M. Bakich; A. Bala; P. Behera; K. Belous; V. Bhardwaj; G. Bonvicini; A. Bozek; M. Bračko; T. E. Browder; D. Červenkov; M. C. Chang; P. Chang; V. Chekelian; A. Chen; B. G. Cheon; R. Chistov; I. S. Cho; K. Cho; V. Chobanova; Y. Choi; D. Cinabro; J. Dalseno; M. Danilov; Z. Doležal; Z. Drásal; D. Dutta; S. Eidelman; S. Esen; H. Farhat; J. E. Fast; T. Ferber; V. Gaur; N. Gabyshev; S. Ganguly; R. Gillard; Y. M. Goh; B. Golob; J. Haba; H. Hayashii; Y. Horii; Y. Hoshi; W. S. Hou; H. J. Hyun; T. Iijima; A. Ishikawa; T. Iwashita; I. Jaegle; T. Julius; D. H. Kah; E. Kato; D. Y. Kim; H. J. Kim; J. B. Kim; M. J. Kim; Y. J. Kim; K. Kinoshita; J. Klucar; B. R. Ko; P. Kodyš; S. Korpar; P. Krishnan; P. Križan; P. Krokovny; T. Kuhr; T. Kumita; A. Kuzmin; Y. J. Kwon; S. H. Lee; J. Li; Y. Li; L. Li Gioi; Y. Liu; D. Liventsev; P. Lukin; H. Miyake; R. Mizuk; G. B. Mohanty; A. Moll; T. Mori; N. Muramatsu; R. Mussa; Y. Nagasaka; M. Nakao; E. Nedelkovska; K. Negishi; C. Ng; N. K. Nisar; O. Nitoh; S. Ogawa; S. Okuno; Y. Onuki; P. Pakhlov; G. Pakhlova; C. W. Park; H. Park; T. K. Pedlar; M. Petrič; L. E. Piilonen; M. Ritter; M. Röhrken; A. Rostomyan; H. Sahoo; T. Saito; Y. Sakai; S. Sandilya; L. Santelj; T. Sanuki; V. Savinov; O. Schneider; G. Schnell; C. Schwanda; A. J. Schwartz; K. Senyo; O. Seon; M. E. Sevior; M. Shapkin; C. P. Shen; T. A. Shibata; J. G. Shiu; B. Shwartz; A. Sibidanov; F. Simon; Y. S. Sohn; A. Sokolov; E. Solovieva; M. Starič; M. Steder; Z. Suzuki; U. Tamponi; G. Tatishvili; Y. Teramoto; M. Uchida; T. Uglov; Y. Unno; S. Uno; P. Urquijo; S. E. Vahsen; C. Van Hulse; P. Vanhoefer; G. Varner; K. E. Varvell; M. N. Wagner; C. H. Wang; M. Z. Wang; Y. Watanabe; K. M. Williams; E. Won; Y. Yamashita; S. Yashchenko; Y. Yusa; V. Zhilich; V. Zhulanov; A. Zupanc

doi:10.1103/PhysRevD.88.091104

Evidence for the suppressed decay B-^→DK-, D→K+ ^π-π0

M. Nayak, J. Libby, K. Trabelsi, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, A. M. Bakich, A. Bala, P. Behera, K. Belous, V. Bhardwaj, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, M. C. Chang, P. Chang, V. ChekelianA. Chen, B. G. Cheon, R. Chistov, I. S. Cho, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Doležal, Z. Drásal, D. Dutta, S. Eidelman, S. Esen, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, T. Iwashita, I. Jaegle, T. Julius, D. H. Kah, E. Kato, D. Y. Kim, H. J. Kim, J. B. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. Krishnan, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. J. Kwon, S. H. Lee, J. Li, Y. Li, L. Li Gioi, Y. Liu, D. Liventsev, P. Lukin, H. Miyake, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa, Y. Nagasaka, M. Nakao, E. Nedelkovska, K. Negishi, C. Ng, N. K. Nisar, O. Nitoh, S. Ogawa, S. Okuno, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar, M. Petrič, L. E. Piilonen, M. Ritter, M. Röhrken, A. Rostomyan, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. A. Shibata, J. G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. S. Sohn, A. Sokolov, E. Solovieva, M. Starič, M. Steder, Z. Suzuki, U. Tamponi, G. Tatishvili, Y. Teramoto, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, M. N. Wagner, C. H. Wang, M. Z. Wang, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Y. Yusa, V. Zhilich, V. Zhulanov, A. Zupanc

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Abstract

We report a study of the suppressed decay B^-→DK ^-, D→K⁺π^-π0, where D denotes either a D0 or a D^̄0 meson. The decay is sensitive to the CP -violating parameter ₃. Using a data sample of 772×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector, we measure the ratio of branching fractions of the above suppressed decay to the favored decay B^-→DK^-, D→K^-π⁺π0. Our result is R_DK=[1.98±0.62(stat)±0.24(syst)] ×10^-2, which indicates the first evidence of the signal for this suppressed decay with a significance of 3.2 standard deviations. We measure the direct CP asymmetry between the suppressed B^- and B⁺ decays to be A_DK=0.41±0.30(stat)±0.05(syst). We also report measurements for the analogous quantities R_Dπ and A _Dπ for the decay B^-→Dπ^-, D→K⁺π^-π0.

Original language	English
Article number	091104
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	88
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.88.091104
Publication status	Published - 2013 Nov 14

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.88.091104

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Nayak, M., Libby, J., Trabelsi, K., Adachi, I., Aihara, H., Asner, D. M., Aushev, T., Bakich, A. M., Bala, A., Behera, P., Belous, K., Bhardwaj, V., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chang, M. C., Chang, P., ... Zupanc, A. (2013). Evidence for the suppressed decay B-^→DK-, D→K+ ^π-π0. Physical Review D - Particles, Fields, Gravitation and Cosmology, 88(9), Article 091104. https://doi.org/10.1103/PhysRevD.88.091104

Nayak, M, Libby, J, Trabelsi, K, Adachi, I, Aihara, H, Asner, DM, Aushev, T, Bakich, AM, Bala, A, Behera, P, Belous, K, Bhardwaj, V, Bonvicini, G, Bozek, A, Bračko, M, Browder, TE, Červenkov, D, Chang, MC, Chang, P, Chekelian, V, Chen, A, Cheon, BG, Chistov, R, Cho, IS, Cho, K, Chobanova, V, Choi, Y, Cinabro, D, Dalseno, J, Danilov, M, Doležal, Z, Drásal, Z, Dutta, D, Eidelman, S, Esen, S, Farhat, H, Fast, JE, Ferber, T, Gaur, V, Gabyshev, N, Ganguly, S, Gillard, R, Goh, YM, Golob, B, Haba, J, Hayashii, H, Horii, Y, Hoshi, Y, Hou, WS, Hyun, HJ, Iijima, T, Ishikawa, A, Iwashita, T, Jaegle, I, Julius, T, Kah, DH, Kato, E, Kim, DY, Kim, HJ, Kim, JB, Kim, MJ, Kim, YJ, Kinoshita, K, Klucar, J, Ko, BR, Kodyš, P, Korpar, S, Krishnan, P, Križan, P, Krokovny, P, Kuhr, T, Kumita, T, Kuzmin, A, Kwon, YJ, Lee, SH, Li, J, Li, Y, Li Gioi, L, Liu, Y, Liventsev, D, Lukin, P, Miyake, H, Mizuk, R, Mohanty, GB, Moll, A, Mori, T, Muramatsu, N, Mussa, R, Nagasaka, Y, Nakao, M, Nedelkovska, E, Negishi, K, Ng, C, Nisar, NK, Nitoh, O, Ogawa, S, Okuno, S, Onuki, Y, Pakhlov, P, Pakhlova, G, Park, CW, Park, H, Pedlar, TK, Petrič, M, Piilonen, LE, Ritter, M, Röhrken, M, Rostomyan, A, Sahoo, H, Saito, T, Sakai, Y, Sandilya, S, Santelj, L, Sanuki, T, Savinov, V, Schneider, O, Schnell, G, Schwanda, C, Schwartz, AJ, Senyo, K, Seon, O, Sevior, ME, Shapkin, M, Shen, CP, Shibata, TA, Shiu, JG, Shwartz, B, Sibidanov, A, Simon, F, Sohn, YS, Sokolov, A, Solovieva, E, Starič, M, Steder, M, Suzuki, Z, Tamponi, U, Tatishvili, G, Teramoto, Y, Uchida, M, Uglov, T, Unno, Y, Uno, S, Urquijo, P, Vahsen, SE, Van Hulse, C, Vanhoefer, P, Varner, G, Varvell, KE, Wagner, MN, Wang, CH, Wang, MZ, Watanabe, Y, Williams, KM, Won, E, Yamashita, Y, Yashchenko, S, Yusa, Y, Zhilich, V, Zhulanov, V & Zupanc, A 2013, 'Evidence for the suppressed decay B-^→DK-, D→K+ ^π-π0', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 88, no. 9, 091104. https://doi.org/10.1103/PhysRevD.88.091104

@article{7872c3b988af4f369a60d7b5dfaf4035,

title = "Evidence for the suppressed decay B-→DK-, D→K+ π-π0",

abstract = "We report a study of the suppressed decay B-→DK -, D→K+π-π0, where D denotes either a D0 or a {\=D}0 meson. The decay is sensitive to the CP -violating parameter 3. Using a data sample of 772×106 B{\=B} pairs collected at the Υ(4S) resonance with the Belle detector, we measure the ratio of branching fractions of the above suppressed decay to the favored decay B-→DK-, D→K-π+π0. Our result is RDK=[1.98±0.62(stat)±0.24(syst)] ×10-2, which indicates the first evidence of the signal for this suppressed decay with a significance of 3.2 standard deviations. We measure the direct CP asymmetry between the suppressed B- and B+ decays to be ADK=0.41±0.30(stat)±0.05(syst). We also report measurements for the analogous quantities RDπ and A Dπ for the decay B-→Dπ-, D→K+π-π0.",

author = "M. Nayak and J. Libby and K. Trabelsi and I. Adachi and H. Aihara and Asner, {D. M.} and T. Aushev and Bakich, {A. M.} and A. Bala and P. Behera and K. Belous and V. Bhardwaj and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and D. {\v C}ervenkov and Chang, {M. C.} and P. Chang and V. Chekelian and A. Chen and Cheon, {B. G.} and R. Chistov and Cho, {I. S.} and K. Cho and V. Chobanova and Y. Choi and D. Cinabro and J. Dalseno and M. Danilov and Z. Dole{\v z}al and Z. Dr{\'a}sal and D. 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 R. Gillard and Goh, {Y. M.} and B. Golob and J. Haba and H. Hayashii and Y. Horii and Y. Hoshi and Hou, {W. S.} and Hyun, {H. J.} and T. Iijima and A. Ishikawa and T. Iwashita and I. Jaegle and T. Julius and Kah, {D. H.} and E. Kato and Kim, {D. Y.} and Kim, {H. J.} and Kim, {J. B.} 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. Krishnan and P. Kri{\v z}an and P. Krokovny and T. Kuhr and T. Kumita and A. Kuzmin and Kwon, {Y. J.} and Lee, {S. H.} and J. Li and Y. Li and {Li Gioi}, L. and Y. Liu and D. Liventsev and P. Lukin and H. Miyake and R. Mizuk and Mohanty, {G. B.} and A. Moll and T. Mori and N. Muramatsu and R. Mussa and Y. Nagasaka and M. Nakao and E. Nedelkovska and K. Negishi and C. Ng and Nisar, {N. K.} and O. Nitoh and S. Ogawa and S. Okuno and Y. Onuki and P. Pakhlov and G. Pakhlova and Park, {C. W.} and H. Park and Pedlar, {T. K.} 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 S. Sandilya and L. Santelj and T. Sanuki and V. Savinov and O. Schneider and G. Schnell and C. Schwanda and Schwartz, {A. J.} and K. Senyo and O. Seon and Sevior, {M. E.} and M. Shapkin and Shen, {C. P.} and Shibata, {T. A.} and Shiu, {J. G.} and B. Shwartz and A. Sibidanov and F. Simon and Sohn, {Y. S.} and A. Sokolov and E. Solovieva and M. Stari{\v c} and M. Steder and Z. Suzuki and U. Tamponi and G. Tatishvili and Y. Teramoto and M. Uchida and T. Uglov and Y. Unno and S. Uno and P. Urquijo and Vahsen, {S. E.} and {Van Hulse}, C. and P. Vanhoefer and G. Varner and Varvell, {K. E.} and Wagner, {M. N.} and Wang, {C. H.} and Wang, {M. Z.} and Y. Watanabe and Williams, {K. M.} and E. Won and Y. Yamashita and S. Yashchenko and Y. Yusa and V. Zhilich and V. Zhulanov and A. Zupanc",

year = "2013",

month = nov,

day = "14",

doi = "10.1103/PhysRevD.88.091104",

language = "English",

volume = "88",

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

issn = "1550-7998",

publisher = "American Institute of Physics",

number = "9",

}

TY - JOUR

T1 - Evidence for the suppressed decay B-→DK-, D→K+ π-π0

AU - Nayak, M.

AU - Libby, J.

AU - Trabelsi, K.

AU - Adachi, I.

AU - Aihara, H.

AU - Asner, D. M.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Bala, A.

AU - Behera, P.

AU - Belous, K.

AU - Bhardwaj, V.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chang, P.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Cho, I. S.

AU - Cho, K.

AU - Chobanova, V.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dalseno, J.

AU - Danilov, M.

AU - Doležal, Z.

AU - Drásal, Z.

AU - Dutta, D.

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.

AU - Gillard, R.

AU - Goh, Y. M.

AU - Golob, B.

AU - Haba, J.

AU - Hayashii, H.

AU - Horii, Y.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Ishikawa, A.

AU - Iwashita, T.

AU - Jaegle, I.

AU - Julius, T.

AU - Kah, D. H.

AU - Kato, E.

AU - Kim, D. Y.

AU - Kim, H. J.

AU - Kim, J. B.

AU - Kim, M. J.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Klucar, J.

AU - Ko, B. R.

AU - Kodyš, P.

AU - Korpar, S.

AU - Krishnan, P.

AU - Križan, P.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kumita, T.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lee, S. H.

AU - Li, J.

AU - Li, Y.

AU - Li Gioi, L.

AU - Liu, Y.

AU - Liventsev, D.

AU - Lukin, P.

AU - Miyake, H.

AU - Mizuk, R.

AU - Mohanty, G. B.

AU - Moll, A.

AU - Mori, T.

AU - Muramatsu, N.

AU - Mussa, R.

AU - Nagasaka, Y.

AU - Nakao, M.

AU - Nedelkovska, E.

AU - Negishi, K.

AU - Ng, C.

AU - Nisar, N. K.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Okuno, S.

AU - Onuki, Y.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H.

AU - Pedlar, T. K.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Ritter, M.

AU - Röhrken, M.

AU - Rostomyan, A.

AU - Sahoo, H.

AU - Saito, T.

AU - Sakai, Y.

AU - Sandilya, S.

AU - Santelj, L.

AU - Sanuki, T.

AU - Savinov, V.

AU - Schneider, O.

AU - Schnell, G.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Senyo, K.

AU - Seon, O.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shibata, T. A.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Sibidanov, A.

AU - Simon, F.

AU - Sohn, Y. S.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Starič, M.

AU - Steder, M.

AU - Suzuki, Z.

AU - Tamponi, U.

AU - Tatishvili, G.

AU - Teramoto, Y.

AU - Uchida, M.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Vahsen, S. E.

AU - Van Hulse, C.

AU - Vanhoefer, P.

AU - Varner, G.

AU - Varvell, K. E.

AU - Wagner, M. N.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Watanabe, Y.

AU - Williams, K. M.

AU - Won, E.

AU - Yamashita, Y.

AU - Yashchenko, S.

AU - Yusa, Y.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zupanc, A.

PY - 2013/11/14

Y1 - 2013/11/14

N2 - We report a study of the suppressed decay B-→DK -, D→K+π-π0, where D denotes either a D0 or a D̄0 meson. The decay is sensitive to the CP -violating parameter 3. Using a data sample of 772×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector, we measure the ratio of branching fractions of the above suppressed decay to the favored decay B-→DK-, D→K-π+π0. Our result is RDK=[1.98±0.62(stat)±0.24(syst)] ×10-2, which indicates the first evidence of the signal for this suppressed decay with a significance of 3.2 standard deviations. We measure the direct CP asymmetry between the suppressed B- and B+ decays to be ADK=0.41±0.30(stat)±0.05(syst). We also report measurements for the analogous quantities RDπ and A Dπ for the decay B-→Dπ-, D→K+π-π0.

AB - We report a study of the suppressed decay B-→DK -, D→K+π-π0, where D denotes either a D0 or a D̄0 meson. The decay is sensitive to the CP -violating parameter 3. Using a data sample of 772×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector, we measure the ratio of branching fractions of the above suppressed decay to the favored decay B-→DK-, D→K-π+π0. Our result is RDK=[1.98±0.62(stat)±0.24(syst)] ×10-2, which indicates the first evidence of the signal for this suppressed decay with a significance of 3.2 standard deviations. We measure the direct CP asymmetry between the suppressed B- and B+ decays to be ADK=0.41±0.30(stat)±0.05(syst). We also report measurements for the analogous quantities RDπ and A Dπ for the decay B-→Dπ-, D→K+π-π0.

UR - http://www.scopus.com/inward/record.url?scp=84888121403&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.88.091104

DO - 10.1103/PhysRevD.88.091104

M3 - Article

AN - SCOPUS:84888121403

SN - 1550-7998

VL - 88

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

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

IS - 9

M1 - 091104

ER -

Evidence for the suppressed decay B-^→DK-, D→K+ ^π-π0

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