Observation of B±→χc1π± and search for direct CP violation

R. Kumar, J. B. Singh, K. Abe, K. Abe, H. Aihara, D. Anipko, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, M. Barbero, A. Bay, I. Bedny, K. Belous, U. Bitenc, S. Blyth, A. Bozek, M. Bračko, T. E. Browder, M. C. ChangA. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, S. Cole, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, A. Gorišek, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, A. Imoto, K. Inami, R. Itoh, Y. Iwasaki, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, K. Kinoshita, P. Krokovny, C. C. Kuo, Y. J. Kwon, G. Leder, S. W. Lin, D. Liventsev, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, J. Mueller, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, R. Seidl, M. Shapkin, H. Shibuya, B. Shwartz, V. Sidorov, A. Sokolov, A. Somov, N. Soni, M. Starič, H. Stoeck, S. Suzuki, 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, S. Uno, Y. Usov, G. Varner, S. Villa, C. C. Wang, C. H. Wang, M. Z. Wang, Y. Watanabe, E. Won, Q. L. Xie, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, L. M. Zhang, Z. P. Zhang, A. Zupanc

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We report the first observation of B±→χc1π±, a Cabibbo- and color-suppressed decay in a data sample of 386×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We observe 55±10 signal events with a statistical significance of 6.3σ including systematic uncertainties. The measured branching fraction and charge-asymmetry is B(B±→χc1π ±)=(2.2±0.4±0.3)×10-5 and Aπ=0.07±0. 18±0.02, respectively. We also determine the ratio B(B±→χ c1π±)/B(B±→χc1K±)=(4.3±0.8±0.3)%.

Original languageEnglish
Article number051103
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume74
Issue number5
DOIs
Publication statusPublished - 2006 Sep 15

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CP violation
asymmetry
color
detectors
decay
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Kumar, R. ; Singh, J. B. ; Abe, K. ; Abe, K. ; Aihara, H. ; Anipko, D. ; Aushev, T. ; Aziz, T. ; Bakich, A. M. ; Balagura, V. ; Barbero, M. ; Bay, A. ; Bedny, I. ; Belous, K. ; Bitenc, U. ; Blyth, S. ; Bozek, A. ; Bračko, M. ; Browder, T. E. ; Chang, M. C. ; Chen, A. ; Chen, W. T. ; Cheon, B. G. ; Chistov, R. ; Choi, Y. ; Cole, S. ; Dalseno, J. ; Dash, M. ; Drutskoy, A. ; Eidelman, S. ; Fratina, S. ; Gabyshev, N. ; Gershon, T. ; Gokhroo, G. ; Golob, B. ; Gorišek, A. ; Ha, H. ; Haba, J. ; Hara, T. ; Hayasaka, K. ; Hayashii, H. ; Hazumi, M. ; Heffernan, D. ; Hokuue, T. ; Hoshi, Y. ; Hou, S. ; Hou, W. S. ; Iijima, T. ; Imoto, A. ; Inami, K. ; Itoh, R. ; Iwasaki, Y. ; Kang, J. H. ; Katayama, N. ; Kawai, H. ; Kawasaki, T. ; Khan, H. R. ; Kichimi, H. ; Kinoshita, K. ; Krokovny, P. ; Kuo, C. C. ; Kwon, Y. J. ; Leder, G. ; Lin, S. W. ; Liventsev, D. ; Mandl, F. ; Marlow, D. ; Matsumoto, T. ; Matyja, A. ; Mitaroff, W. ; Miyabayashi, K. ; Miyake, H. ; Miyata, H. ; Miyazaki, Y. ; Mizuk, R. ; Moloney, G. R. ; Mueller, J. ; Nakano, E. ; Nakao, M. ; Nishida, S. ; Nitoh, O. ; Noguchi, S. ; Ohshima, T. ; Okabe, T. ; Okuno, S. ; Olsen, S. L. ; Onuki, Y. ; Ozaki, H. ; Pakhlov, P. ; Pakhlova, G. ; Palka, H. ; Park, H. ; Park, K. S. ; Pestotnik, R. ; Piilonen, L. E. ; Sakai, Y. ; Schietinger, T. ; Schneider, O. ; Schümann, J. ; Schwanda, C. ; Schwartz, A. J. ; Seidl, R. ; Shapkin, M. ; Shibuya, H. ; Shwartz, B. ; Sidorov, V. ; Sokolov, A. ; Somov, A. ; Soni, N. ; Starič, M. ; Stoeck, H. ; Suzuki, S. ; 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. ; Uno, S. ; Usov, Y. ; Varner, G. ; Villa, S. ; Wang, C. C. ; Wang, C. H. ; Wang, M. Z. ; Watanabe, Y. ; Won, E. ; Xie, Q. L. ; Yamaguchi, A. ; Yamashita, Y. ; Yamauchi, M. ; Zhang, C. C. ; Zhang, L. M. ; Zhang, Z. P. ; Zupanc, A. / Observation of B±→χc1π± and search for direct CP violation. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2006 ; Vol. 74, No. 5.
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abstract = "We report the first observation of B±→χc1π±, a Cabibbo- and color-suppressed decay in a data sample of 386×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We observe 55±10 signal events with a statistical significance of 6.3σ including systematic uncertainties. The measured branching fraction and charge-asymmetry is B(B±→χc1π ±)=(2.2±0.4±0.3)×10-5 and Aπ=0.07±0. 18±0.02, respectively. We also determine the ratio B(B±→χ c1π±)/B(B±→χc1K±)=(4.3±0.8±0.3){\%}.",
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Kumar, R, Singh, JB, Abe, K, Abe, K, Aihara, H, Anipko, D, Aushev, T, Aziz, T, Bakich, AM, Balagura, V, Barbero, M, Bay, A, Bedny, I, Belous, K, Bitenc, U, Blyth, S, Bozek, A, Bračko, M, Browder, TE, Chang, MC, Chen, A, Chen, WT, Cheon, BG, Chistov, R, Choi, Y, Cole, S, Dalseno, J, Dash, M, Drutskoy, A, Eidelman, S, Fratina, S, Gabyshev, N, Gershon, T, Gokhroo, G, Golob, B, Gorišek, A, Ha, H, Haba, J, Hara, T, Hayasaka, K, Hayashii, H, Hazumi, M, Heffernan, D, Hokuue, T, Hoshi, Y, Hou, S, Hou, WS, Iijima, T, Imoto, A, Inami, K, Itoh, R, Iwasaki, Y, Kang, JH, Katayama, N, Kawai, H, Kawasaki, T, Khan, HR, Kichimi, H, Kinoshita, K, Krokovny, P, Kuo, CC, Kwon, YJ, Leder, G, Lin, SW, Liventsev, D, Mandl, F, Marlow, D, Matsumoto, T, Matyja, A, Mitaroff, W, Miyabayashi, K, Miyake, H, Miyata, H, Miyazaki, Y, Mizuk, R, Moloney, GR, Mueller, J, Nakano, E, Nakao, M, Nishida, S, Nitoh, O, Noguchi, S, Ohshima, T, Okabe, T, Okuno, S, Olsen, SL, Onuki, Y, Ozaki, H, Pakhlov, P, Pakhlova, G, Palka, H, Park, H, Park, KS, Pestotnik, R, Piilonen, LE, Sakai, Y, Schietinger, T, Schneider, O, Schümann, J, Schwanda, C, Schwartz, AJ, Seidl, R, Shapkin, M, Shibuya, H, Shwartz, B, Sidorov, V, Sokolov, A, Somov, A, Soni, N, Starič, M, Stoeck, H, Suzuki, S, Takasaki, F, Tanaka, M, Taylor, GN, Teramoto, Y, Tian, XC, Tikhomirov, I, Trabelsi, K, Tsuboyama, T, Tsukamoto, T, Uehara, S, Uglov, T, Ueno, K, Uno, S, Usov, Y, Varner, G, Villa, S, Wang, CC, Wang, CH, Wang, MZ, Watanabe, Y, Won, E, Xie, QL, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Zhang, CC, Zhang, LM, Zhang, ZP & Zupanc, A 2006, 'Observation of B±→χc1π± and search for direct CP violation', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 74, no. 5, 051103. https://doi.org/10.1103/PhysRevD.74.051103

Observation of B±→χc1π± and search for direct CP violation. / Kumar, R.; Singh, J. B.; Abe, K.; Abe, K.; Aihara, H.; Anipko, D.; Aushev, T.; Aziz, T.; Bakich, A. M.; Balagura, V.; Barbero, M.; Bay, A.; Bedny, I.; Belous, K.; Bitenc, U.; Blyth, S.; Bozek, A.; Bračko, M.; Browder, T. E.; Chang, M. C.; Chen, A.; Chen, W. T.; Cheon, B. G.; Chistov, R.; Choi, Y.; Cole, S.; Dalseno, J.; Dash, M.; Drutskoy, A.; Eidelman, S.; Fratina, S.; Gabyshev, N.; Gershon, T.; Gokhroo, G.; Golob, B.; Gorišek, A.; Ha, H.; Haba, J.; Hara, T.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Heffernan, D.; Hokuue, T.; Hoshi, Y.; Hou, S.; Hou, W. S.; Iijima, T.; Imoto, A.; Inami, K.; Itoh, R.; Iwasaki, Y.; Kang, J. H.; Katayama, N.; Kawai, H.; Kawasaki, T.; Khan, H. R.; Kichimi, H.; Kinoshita, K.; Krokovny, P.; Kuo, C. C.; Kwon, Y. J.; Leder, G.; Lin, S. W.; Liventsev, D.; Mandl, F.; Marlow, D.; Matsumoto, T.; Matyja, A.; Mitaroff, W.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Moloney, G. R.; Mueller, J.; Nakano, E.; Nakao, M.; Nishida, S.; Nitoh, O.; Noguchi, S.; Ohshima, T.; Okabe, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Palka, H.; Park, H.; Park, K. S.; Pestotnik, R.; Piilonen, L. E.; Sakai, Y.; Schietinger, T.; Schneider, O.; Schümann, J.; Schwanda, C.; Schwartz, A. J.; Seidl, R.; Shapkin, M.; Shibuya, H.; Shwartz, B.; Sidorov, V.; Sokolov, A.; Somov, A.; Soni, N.; Starič, M.; Stoeck, H.; Suzuki, S.; 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.; Uno, S.; Usov, Y.; Varner, G.; Villa, S.; Wang, C. C.; Wang, C. H.; Wang, M. Z.; Watanabe, Y.; Won, E.; Xie, Q. L.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Zhang, C. C.; Zhang, L. M.; Zhang, Z. P.; Zupanc, A.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 74, No. 5, 051103, 15.09.2006.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Observation of B±→χc1π± and search for direct CP violation

AU - Kumar, R.

AU - Singh, J. B.

AU - Abe, K.

AU - Abe, K.

AU - Aihara, H.

AU - Anipko, D.

AU - Aushev, T.

AU - Aziz, T.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Barbero, M.

AU - Bay, A.

AU - Bedny, I.

AU - Belous, K.

AU - Bitenc, U.

AU - Blyth, S.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, M. C.

AU - Chen, A.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Choi, Y.

AU - Cole, S.

AU - Dalseno, J.

AU - Dash, M.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Fratina, S.

AU - Gabyshev, N.

AU - Gershon, T.

AU - Gokhroo, G.

AU - Golob, B.

AU - Gorišek, A.

AU - Ha, H.

AU - Haba, J.

AU - Hara, T.

AU - Hayasaka, 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 - Imoto, A.

AU - Inami, K.

AU - Itoh, R.

AU - Iwasaki, Y.

AU - Kang, J. H.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Khan, H. R.

AU - Kichimi, H.

AU - Kinoshita, K.

AU - Krokovny, P.

AU - Kuo, C. C.

AU - Kwon, Y. J.

AU - Leder, G.

AU - Lin, S. W.

AU - Liventsev, D.

AU - Mandl, F.

AU - Marlow, D.

AU - Matsumoto, T.

AU - Matyja, A.

AU - Mitaroff, W.

AU - Miyabayashi, K.

AU - Miyake, H.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mizuk, R.

AU - Moloney, G. R.

AU - Mueller, J.

AU - Nakano, E.

AU - Nakao, M.

AU - Nishida, S.

AU - Nitoh, O.

AU - Noguchi, S.

AU - Ohshima, T.

AU - Okabe, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Onuki, Y.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Palka, H.

AU - Park, H.

AU - Park, K. S.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Sakai, Y.

AU - Schietinger, T.

AU - Schneider, O.

AU - Schümann, J.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Seidl, R.

AU - Shapkin, M.

AU - Shibuya, H.

AU - Shwartz, B.

AU - Sidorov, V.

AU - Sokolov, A.

AU - Somov, A.

AU - Soni, N.

AU - Starič, M.

AU - Stoeck, H.

AU - Suzuki, S.

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 - Uno, S.

AU - Usov, Y.

AU - Varner, G.

AU - Villa, S.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Watanabe, Y.

AU - Won, E.

AU - Xie, Q. L.

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Zhang, C. C.

AU - Zhang, L. M.

AU - Zhang, Z. P.

AU - Zupanc, A.

PY - 2006/9/15

Y1 - 2006/9/15

N2 - We report the first observation of B±→χc1π±, a Cabibbo- and color-suppressed decay in a data sample of 386×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We observe 55±10 signal events with a statistical significance of 6.3σ including systematic uncertainties. The measured branching fraction and charge-asymmetry is B(B±→χc1π ±)=(2.2±0.4±0.3)×10-5 and Aπ=0.07±0. 18±0.02, respectively. We also determine the ratio B(B±→χ c1π±)/B(B±→χc1K±)=(4.3±0.8±0.3)%.

AB - We report the first observation of B±→χc1π±, a Cabibbo- and color-suppressed decay in a data sample of 386×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We observe 55±10 signal events with a statistical significance of 6.3σ including systematic uncertainties. The measured branching fraction and charge-asymmetry is B(B±→χc1π ±)=(2.2±0.4±0.3)×10-5 and Aπ=0.07±0. 18±0.02, respectively. We also determine the ratio B(B±→χ c1π±)/B(B±→χc1K±)=(4.3±0.8±0.3)%.

UR - http://www.scopus.com/inward/record.url?scp=33748517412&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748517412&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.74.051103

DO - 10.1103/PhysRevD.74.051103

M3 - Article

AN - SCOPUS:33748517412

VL - 74

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

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

SN - 1550-7998

IS - 5

M1 - 051103

ER -