Improved measurements of branching fractions and CP asymmetries in B→ηh decays

P. Chang, K. Abe, I. Adachi, H. Aihara, D. Anipko, A. M. Bakich, E. Barberio, A. Bay, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, R. Chistov & 123 others S. K. Choi, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, J. Dragic, S. Eidelman, S. Fratina, N. Gabyshev, A. Go, A. Gorišek, H. Ha, J. Haba, K. Hara, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, S. U. Kataoka, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, S. W. Lin, F. Mandl, T. Matsumoto, S. McOnie, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, Y. Nagasaka, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M. Z. Wang, M. Watanabe, Y. Watanabe, R. Wedd, J. Wicht, Eunil Won, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We report improved measurements of B decays with an η meson in the final state using 492fb-1 of data collected by the Belle detector at the KEKB e+e- collider. We observe the decays B±→ηπ± and B±→ηK± and measure the branching fractions B(B±→ηπ±)=(4.2±0.4(stat)±0.2(sys)) ×10-6 and B(B±→ηK±)=(1.9±0.3(stat)-0.1+0. 2(sys))×10-6. The corresponding CP-violating asymmetries are measured to be -0.23±0.09(stat)±0.02(sys) for ηπ± and -0.39±0.16(stat)±0.03(sys) for ηK±. We also search for B0→ηK0 decays and set an upper limit of 1.9×10-6 at the 90% confidence level.

Original languageEnglish
Article number071104
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number7
DOIs
Publication statusPublished - 2007 Apr 18

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Asymmetry
Branching
asymmetry
Decay
decay
Confidence Level
Mesons
confidence
mesons
Detector
detectors

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

Improved measurements of branching fractions and CP asymmetries in B→ηh decays. / Chang, P.; Abe, K.; Adachi, I.; Aihara, H.; Anipko, D.; Bakich, A. M.; Barberio, E.; Bay, A.; Bitenc, U.; Bizjak, I.; Bondar, A.; Bozek, A.; Bračko, M.; Browder, T. E.; Chao, Y.; Chen, A.; Chen, K. F.; Chen, W. T.; Cheon, B. G.; Chistov, R.; Choi, S. K.; Choi, Y.; Choi, Y. K.; Cole, S.; Dalseno, J.; Dash, M.; Dragic, J.; Eidelman, S.; Fratina, S.; Gabyshev, N.; Go, A.; Gorišek, A.; Ha, H.; Haba, J.; Hara, K.; Hayashii, H.; Hazumi, M.; Heffernan, D.; Hokuue, T.; Hoshi, Y.; Hou, S.; Hou, W. S.; Iijima, T.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Kaji, H.; Kang, J. H.; Kataoka, S. U.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, H. J.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Krokovny, P.; Kumar, R.; Kuo, C. C.; Kuzmin, A.; Kwon, Y. J.; Lee, M. J.; Lee, S. E.; Lesiak, T.; Lin, S. W.; Mandl, F.; Matsumoto, T.; McOnie, S.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Moloney, G. R.; Mori, T.; Nagasaka, Y.; Nakao, M.; Nishida, S.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Onuki, Y.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, H.; Peak, L. S.; Pestotnik, R.; Piilonen, L. E.; Sakai, Y.; Satoyama, N.; Schietinger, T.; Schneider, O.; Schümann, J.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shibuya, H.; Shwartz, B.; Singh, J. B.; Somov, A.; Soni, N.; Stanič, S.; Starič, M.; Stoeck, H.; Sumiyoshi, T.; Takasaki, F.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Tian, X. C.; Tikhomirov, I.; Trabelsi, K.; Tsuboyama, T.; Tsukamoto, T.; Uehara, S.; Uglov, T.; Ueno, K.; Unno, Y.; Uno, S.; Usov, Y.; Varner, G.; Varvell, K. E.; Villa, S.; Wang, C. C.; Wang, C. H.; Wang, M. Z.; Watanabe, M.; Watanabe, Y.; Wedd, R.; Wicht, J.; Won, Eunil; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Zhang, C. C.; Zhang, Z. P.; Zhilich, V.; Zupanc, A.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 75, No. 7, 071104, 18.04.2007.

Research output: Contribution to journalArticle

Chang, P, Abe, K, Adachi, I, Aihara, H, Anipko, D, Bakich, AM, Barberio, E, Bay, A, Bitenc, U, Bizjak, I, Bondar, A, Bozek, A, Bračko, M, Browder, TE, Chao, Y, Chen, A, Chen, KF, Chen, WT, Cheon, BG, Chistov, R, Choi, SK, Choi, Y, Choi, YK, Cole, S, Dalseno, J, Dash, M, Dragic, J, Eidelman, S, Fratina, S, Gabyshev, N, Go, A, Gorišek, A, Ha, H, Haba, J, Hara, K, Hayashii, H, Hazumi, M, Heffernan, D, Hokuue, T, Hoshi, Y, Hou, S, Hou, WS, Iijima, T, Inami, K, Ishikawa, A, Ishino, H, Itoh, R, Iwasaki, M, Iwasaki, Y, Kaji, H, Kang, JH, Kataoka, SU, Kawai, H, Kawasaki, T, Kichimi, H, Kim, HJ, Kim, YJ, Kinoshita, K, Korpar, S, Krokovny, P, Kumar, R, Kuo, CC, Kuzmin, A, Kwon, YJ, Lee, MJ, Lee, SE, Lesiak, T, Lin, SW, Mandl, F, Matsumoto, T, McOnie, S, Miyata, H, Miyazaki, Y, Mizuk, R, Moloney, GR, Mori, T, Nagasaka, Y, Nakao, M, Nishida, S, Nitoh, O, Ogawa, S, Ohshima, T, Okuno, S, Onuki, Y, Ozaki, H, Pakhlov, P, Pakhlova, G, Park, H, Peak, LS, Pestotnik, R, Piilonen, LE, Sakai, Y, Satoyama, N, Schietinger, T, Schneider, O, Schümann, J, Schwanda, C, Schwartz, AJ, Senyo, K, Sevior, ME, Shapkin, M, Shibuya, H, Shwartz, B, Singh, JB, Somov, A, Soni, N, Stanič, S, Starič, M, Stoeck, H, Sumiyoshi, T, Takasaki, F, Tanaka, M, Taylor, GN, Teramoto, Y, Tian, XC, Tikhomirov, I, Trabelsi, K, Tsuboyama, T, Tsukamoto, T, Uehara, S, Uglov, T, Ueno, K, Unno, Y, Uno, S, Usov, Y, Varner, G, Varvell, KE, Villa, S, Wang, CC, Wang, CH, Wang, MZ, Watanabe, M, Watanabe, Y, Wedd, R, Wicht, J, Won, E, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Zhang, CC, Zhang, ZP, Zhilich, V & Zupanc, A 2007, 'Improved measurements of branching fractions and CP asymmetries in B→ηh decays', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 75, no. 7, 071104. https://doi.org/10.1103/PhysRevD.75.071104
Chang, P. ; Abe, K. ; Adachi, I. ; Aihara, H. ; Anipko, D. ; Bakich, A. M. ; Barberio, E. ; Bay, A. ; Bitenc, U. ; Bizjak, I. ; Bondar, A. ; Bozek, A. ; Bračko, M. ; Browder, T. E. ; Chao, Y. ; Chen, A. ; Chen, K. F. ; Chen, W. T. ; Cheon, B. G. ; Chistov, R. ; Choi, S. K. ; Choi, Y. ; Choi, Y. K. ; Cole, S. ; Dalseno, J. ; Dash, M. ; Dragic, J. ; Eidelman, S. ; Fratina, S. ; Gabyshev, N. ; Go, A. ; Gorišek, A. ; Ha, H. ; Haba, J. ; Hara, K. ; Hayashii, H. ; Hazumi, M. ; Heffernan, D. ; Hokuue, T. ; Hoshi, Y. ; Hou, S. ; Hou, W. S. ; Iijima, T. ; Inami, K. ; Ishikawa, A. ; Ishino, H. ; Itoh, R. ; Iwasaki, M. ; Iwasaki, Y. ; Kaji, H. ; Kang, J. H. ; Kataoka, S. U. ; Kawai, H. ; Kawasaki, T. ; Kichimi, H. ; Kim, H. J. ; Kim, Y. J. ; Kinoshita, K. ; Korpar, S. ; Krokovny, P. ; Kumar, R. ; Kuo, C. C. ; Kuzmin, A. ; Kwon, Y. J. ; Lee, M. J. ; Lee, S. E. ; Lesiak, T. ; Lin, S. W. ; Mandl, F. ; Matsumoto, T. ; McOnie, S. ; Miyata, H. ; Miyazaki, Y. ; Mizuk, R. ; Moloney, G. R. ; Mori, T. ; Nagasaka, Y. ; Nakao, M. ; Nishida, S. ; Nitoh, O. ; Ogawa, S. ; Ohshima, T. ; Okuno, S. ; Onuki, Y. ; Ozaki, H. ; Pakhlov, P. ; Pakhlova, G. ; Park, H. ; Peak, L. S. ; Pestotnik, R. ; Piilonen, L. E. ; Sakai, Y. ; Satoyama, N. ; Schietinger, T. ; Schneider, O. ; Schümann, J. ; Schwanda, C. ; Schwartz, A. J. ; Senyo, K. ; Sevior, M. E. ; Shapkin, M. ; Shibuya, H. ; Shwartz, B. ; Singh, J. B. ; Somov, A. ; Soni, N. ; Stanič, S. ; Starič, M. ; Stoeck, H. ; Sumiyoshi, T. ; Takasaki, F. ; Tanaka, M. ; Taylor, G. N. ; Teramoto, Y. ; Tian, X. C. ; Tikhomirov, I. ; Trabelsi, K. ; Tsuboyama, T. ; Tsukamoto, T. ; Uehara, S. ; Uglov, T. ; Ueno, K. ; Unno, Y. ; Uno, S. ; Usov, Y. ; Varner, G. ; Varvell, K. E. ; Villa, S. ; Wang, C. C. ; Wang, C. H. ; Wang, M. Z. ; Watanabe, M. ; Watanabe, Y. ; Wedd, R. ; Wicht, J. ; Won, Eunil ; Yamaguchi, A. ; Yamashita, Y. ; Yamauchi, M. ; Zhang, C. C. ; Zhang, Z. P. ; Zhilich, V. ; Zupanc, A. / Improved measurements of branching fractions and CP asymmetries in B→ηh decays. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2007 ; Vol. 75, No. 7.
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title = "Improved measurements of branching fractions and CP asymmetries in B→ηh decays",
abstract = "We report improved measurements of B decays with an η meson in the final state using 492fb-1 of data collected by the Belle detector at the KEKB e+e- collider. We observe the decays B±→ηπ± and B±→ηK± and measure the branching fractions B(B±→ηπ±)=(4.2±0.4(stat)±0.2(sys)) ×10-6 and B(B±→ηK±)=(1.9±0.3(stat)-0.1+0. 2(sys))×10-6. The corresponding CP-violating asymmetries are measured to be -0.23±0.09(stat)±0.02(sys) for ηπ± and -0.39±0.16(stat)±0.03(sys) for ηK±. We also search for B0→ηK0 decays and set an upper limit of 1.9×10-6 at the 90{\%} confidence level.",
author = "P. Chang and K. Abe and I. Adachi and H. Aihara and D. Anipko and Bakich, {A. M.} and E. Barberio and A. Bay and U. Bitenc and I. Bizjak and A. Bondar and A. Bozek and M. Bračko and Browder, {T. E.} and Y. Chao and A. Chen and Chen, {K. F.} and Chen, {W. T.} and Cheon, {B. G.} and R. Chistov and Choi, {S. K.} and Y. Choi and Choi, {Y. K.} and S. Cole and J. Dalseno and M. Dash and J. Dragic and S. Eidelman and S. Fratina and N. Gabyshev and A. Go and A. Gorišek and H. Ha and J. Haba and K. Hara and H. Hayashii and M. Hazumi and D. Heffernan and T. Hokuue and Y. Hoshi and S. Hou and Hou, {W. S.} and T. Iijima and K. Inami and A. Ishikawa and H. Ishino and R. Itoh and M. Iwasaki and Y. Iwasaki and H. Kaji and Kang, {J. H.} and Kataoka, {S. U.} and H. Kawai and T. Kawasaki and H. Kichimi and Kim, {H. J.} and Kim, {Y. J.} and K. Kinoshita and S. Korpar and P. Krokovny and R. Kumar and Kuo, {C. C.} and A. Kuzmin and Kwon, {Y. J.} and Lee, {M. J.} and Lee, {S. E.} and T. Lesiak and Lin, {S. W.} and F. Mandl and T. Matsumoto and S. McOnie and H. Miyata and Y. Miyazaki and R. Mizuk and Moloney, {G. R.} and T. Mori and Y. Nagasaka and M. Nakao and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and S. Okuno and Y. Onuki and H. Ozaki and P. Pakhlov and G. Pakhlova and H. Park and Peak, {L. S.} and R. Pestotnik and Piilonen, {L. E.} and Y. Sakai and N. Satoyama and T. Schietinger and O. Schneider and J. Sch{\"u}mann and C. Schwanda and Schwartz, {A. J.} and K. Senyo and Sevior, {M. E.} and M. Shapkin and H. Shibuya and B. Shwartz and Singh, {J. B.} and A. Somov and N. Soni and S. Stanič and M. Starič and H. Stoeck and T. Sumiyoshi and F. Takasaki and M. Tanaka and Taylor, {G. N.} and Y. Teramoto and Tian, {X. C.} and I. Tikhomirov and K. Trabelsi and T. Tsuboyama and T. Tsukamoto and S. Uehara and T. Uglov and K. Ueno and Y. Unno and S. Uno and Y. Usov and G. Varner and Varvell, {K. E.} and S. Villa and Wang, {C. C.} and Wang, {C. H.} and Wang, {M. Z.} and M. Watanabe and Y. Watanabe and R. Wedd and J. Wicht and Eunil Won and A. Yamaguchi and Y. Yamashita and M. Yamauchi and Zhang, {C. C.} and Zhang, {Z. P.} and V. Zhilich and A. Zupanc",
year = "2007",
month = "4",
day = "18",
doi = "10.1103/PhysRevD.75.071104",
language = "English",
volume = "75",
journal = "Physical review D: Particles and fields",
issn = "0556-2821",
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TY - JOUR

T1 - Improved measurements of branching fractions and CP asymmetries in B→ηh decays

AU - Chang, P.

AU - Abe, K.

AU - Adachi, I.

AU - Aihara, H.

AU - Anipko, D.

AU - Bakich, A. M.

AU - Barberio, E.

AU - Bay, A.

AU - Bitenc, U.

AU - Bizjak, I.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chao, Y.

AU - Chen, A.

AU - Chen, K. F.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choi, Y. K.

AU - Cole, S.

AU - Dalseno, J.

AU - Dash, M.

AU - Dragic, J.

AU - Eidelman, S.

AU - Fratina, S.

AU - Gabyshev, N.

AU - Go, A.

AU - Gorišek, A.

AU - Ha, H.

AU - Haba, J.

AU - Hara, K.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Heffernan, D.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, S.

AU - Hou, W. S.

AU - Iijima, T.

AU - Inami, K.

AU - Ishikawa, A.

AU - Ishino, H.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Kaji, H.

AU - Kang, J. H.

AU - Kataoka, S. U.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Korpar, S.

AU - Krokovny, P.

AU - Kumar, R.

AU - Kuo, C. C.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lee, M. J.

AU - Lee, S. E.

AU - Lesiak, T.

AU - Lin, S. W.

AU - Mandl, F.

AU - Matsumoto, T.

AU - McOnie, S.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mizuk, R.

AU - Moloney, G. R.

AU - Mori, T.

AU - Nagasaka, Y.

AU - Nakao, M.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okuno, S.

AU - Onuki, Y.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, H.

AU - Peak, L. S.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Sakai, Y.

AU - Satoyama, N.

AU - Schietinger, T.

AU - Schneider, O.

AU - Schümann, J.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shibuya, H.

AU - Shwartz, B.

AU - Singh, J. B.

AU - Somov, A.

AU - Soni, N.

AU - Stanič, S.

AU - Starič, M.

AU - Stoeck, H.

AU - Sumiyoshi, T.

AU - Takasaki, F.

AU - Tanaka, M.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Tian, X. C.

AU - Tikhomirov, I.

AU - Trabelsi, K.

AU - Tsuboyama, T.

AU - Tsukamoto, T.

AU - Uehara, S.

AU - Uglov, T.

AU - Ueno, K.

AU - Unno, Y.

AU - Uno, S.

AU - Usov, Y.

AU - Varner, G.

AU - Varvell, K. E.

AU - Villa, S.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Watanabe, M.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Wicht, J.

AU - Won, Eunil

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Zhang, C. C.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zupanc, A.

PY - 2007/4/18

Y1 - 2007/4/18

N2 - We report improved measurements of B decays with an η meson in the final state using 492fb-1 of data collected by the Belle detector at the KEKB e+e- collider. We observe the decays B±→ηπ± and B±→ηK± and measure the branching fractions B(B±→ηπ±)=(4.2±0.4(stat)±0.2(sys)) ×10-6 and B(B±→ηK±)=(1.9±0.3(stat)-0.1+0. 2(sys))×10-6. The corresponding CP-violating asymmetries are measured to be -0.23±0.09(stat)±0.02(sys) for ηπ± and -0.39±0.16(stat)±0.03(sys) for ηK±. We also search for B0→ηK0 decays and set an upper limit of 1.9×10-6 at the 90% confidence level.

AB - We report improved measurements of B decays with an η meson in the final state using 492fb-1 of data collected by the Belle detector at the KEKB e+e- collider. We observe the decays B±→ηπ± and B±→ηK± and measure the branching fractions B(B±→ηπ±)=(4.2±0.4(stat)±0.2(sys)) ×10-6 and B(B±→ηK±)=(1.9±0.3(stat)-0.1+0. 2(sys))×10-6. The corresponding CP-violating asymmetries are measured to be -0.23±0.09(stat)±0.02(sys) for ηπ± and -0.39±0.16(stat)±0.03(sys) for ηK±. We also search for B0→ηK0 decays and set an upper limit of 1.9×10-6 at the 90% confidence level.

UR - http://www.scopus.com/inward/record.url?scp=34247222554&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34247222554&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.75.071104

DO - 10.1103/PhysRevD.75.071104

M3 - Article

VL - 75

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 7

M1 - 071104

ER -