Measurements of time-dependent CP asymmetries in B→D* π± decays using a partial reconstruction technique

S. Bahinipati, K. Trabelsi, K. Kinoshita, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, A. Chen, P. Chen, B. G. Cheon, C. C. ChiangI. S. Cho, K. Cho, Y. Choid, J. Dalseno, Z. Dalsžal, Z. Drásal, S. Eidelman, N. Gabyshev, B. Golob, H. Ha, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, A. Ishikawa, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, C. Kiesling, H. J. Kim, M. J. Kim, B. R. Ko, N. Kobayashi, P. Kodyš, P. Križan, T. Kumita, Y. J. Kwon, S. H. Kyeong, J. S. Lange, M. J. Lee, S. H. Lee, J. Li, C. Liu, R. Louvot, A. Matyja, S. Mconie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, M. Nakao, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, P. Pakhlov, C. W. Park, M. Petrič, L. E. Piilonen, A. Poluektov, M. Röhrken, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, P. Smerkol, Y. S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Tanaka, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, G. Varner, A. Vinokurova, C. H. Wang, E. Won, B. D. Yabsley, Y. Yamashita, C. C. Zhang, Z. P. Zhang, P. Zhou, T. Zivko, A. Zupanc

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Abstract

We report results on time-dependent CP asymmetries in B→D *π± decays based on a data sample containing 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at the Υ(4S) resonance. We use a partial reconstruction technique, wherein signal B→D* π± events are identified using information only from the fast pion from the B decay and the slow pion from the subsequent decay of the D*, where the former (latter) corresponds to D*+(D*-) final states. We obtain CP violation parameters S+=+0.061±0. 018(stat)±0.012(syst) and S-=+0.031±0.019(stat) ±0.015(syst).

Original languageEnglish
Article number021101
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume84
Issue number2
DOIs
Publication statusPublished - 2011 Jul 5

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asymmetry
decay
pions
CP violation
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energy

All Science Journal Classification (ASJC) codes

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

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Bahinipati, S. ; Trabelsi, K. ; Kinoshita, K. ; Arinstein, K. ; Aulchenko, V. ; Aushev, T. ; Bakich, A. M. ; Balagura, V. ; Barberio, E. ; Belous, K. ; Bhardwaj, V. ; Bhuyan, B. ; Bischofberger, M. ; Bondar, A. ; Bozek, A. ; Bračko, M. ; Chen, A. ; Chen, P. ; Cheon, B. G. ; Chiang, C. C. ; Cho, I. S. ; Cho, K. ; Choid, Y. ; Dalseno, J. ; Dalsžal, Z. ; Drásal, Z. ; Eidelman, S. ; Gabyshev, N. ; Golob, B. ; Ha, H. ; Horii, Y. ; Hoshi, Y. ; Hou, W. S. ; Hsiung, Y. B. ; Hyun, H. J. ; Ishikawa, A. ; Iwabuchi, M. ; Iwasaki, Y. ; Iwashita, T. ; Julius, T. ; Kang, J. H. ; Kiesling, C. ; Kim, H. J. ; Kim, M. J. ; Ko, B. R. ; Kobayashi, N. ; Kodyš, P. ; Križan, P. ; Kumita, T. ; Kwon, Y. J. ; Kyeong, S. H. ; Lange, J. S. ; Lee, M. J. ; Lee, S. H. ; Li, J. ; Liu, C. ; Louvot, R. ; Matyja, A. ; Mconie, S. ; Miyabayashi, K. ; Miyata, H. ; Miyazaki, Y. ; Mohanty, G. B. ; Nakao, M. ; Natkaniec, Z. ; Neubauer, S. ; Nishida, S. ; Nitoh, O. ; Ogawa, S. ; Ohshima, T. ; Pakhlov, P. ; Park, C. W. ; Petrič, M. ; Piilonen, L. E. ; Poluektov, A. ; Röhrken, M. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Schwanda, C. ; Schwartz, A. J. ; Sevior, M. E. ; Shapkin, M. ; Shen, C. P. ; Shiu, J. G. ; Smerkol, P. ; Sohn, Y. S. ; Sokolov, A. ; Solovieva, E. ; Stanič, S. ; Starič, M. ; Sumisawa, K. ; Sumiyoshi, T. ; Tanaka, S. ; Teramoto, Y. ; Uchida, M. ; Uehara, S. ; Uglov, T. ; Unno, Y. ; Uno, S. ; Varner, G. ; Vinokurova, A. ; Wang, C. H. ; Won, E. ; Yabsley, B. D. ; Yamashita, Y. ; Zhang, C. C. ; Zhang, Z. P. ; Zhou, P. ; Zivko, T. ; Zupanc, A. / Measurements of time-dependent CP asymmetries in B→D* π± decays using a partial reconstruction technique. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2011 ; Vol. 84, No. 2.
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title = "Measurements of time-dependent CP asymmetries in B→D* π± decays using a partial reconstruction technique",
abstract = "We report results on time-dependent CP asymmetries in B→D *π± decays based on a data sample containing 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at the Υ(4S) resonance. We use a partial reconstruction technique, wherein signal B→D* π± events are identified using information only from the fast pion from the B decay and the slow pion from the subsequent decay of the D*, where the former (latter) corresponds to D*+(D*-) final states. We obtain CP violation parameters S+=+0.061±0. 018(stat)±0.012(syst) and S-=+0.031±0.019(stat) ±0.015(syst).",
author = "S. Bahinipati and K. Trabelsi and K. Kinoshita and K. Arinstein and V. Aulchenko and T. Aushev and Bakich, {A. M.} and V. Balagura and E. Barberio and K. Belous and V. Bhardwaj and B. Bhuyan and M. Bischofberger and A. Bondar and A. Bozek and M. Bračko and A. Chen and P. Chen and Cheon, {B. G.} and Chiang, {C. C.} and Cho, {I. S.} and K. Cho and Y. Choid and J. Dalseno and Z. Dalsžal and Z. Dr{\'a}sal and S. Eidelman and N. Gabyshev and B. Golob and H. Ha and Y. Horii and Y. Hoshi and Hou, {W. S.} and Hsiung, {Y. B.} and Hyun, {H. J.} and A. Ishikawa and M. Iwabuchi and Y. Iwasaki and T. Iwashita and T. Julius and Kang, {J. H.} and C. Kiesling and Kim, {H. J.} and Kim, {M. J.} and Ko, {B. R.} and N. Kobayashi and P. Kodyš and P. Križan and T. Kumita and Kwon, {Y. J.} and Kyeong, {S. H.} and Lange, {J. S.} and Lee, {M. J.} and Lee, {S. H.} and J. Li and C. Liu and R. Louvot and A. Matyja and S. Mconie and K. Miyabayashi and H. Miyata and Y. Miyazaki and Mohanty, {G. B.} and M. Nakao and Z. Natkaniec and S. Neubauer and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and P. Pakhlov and Park, {C. W.} and M. Petrič and Piilonen, {L. E.} and A. Poluektov and M. R{\"o}hrken and H. Sahoo and Y. Sakai and O. Schneider and C. Schwanda and Schwartz, {A. J.} and Sevior, {M. E.} and M. Shapkin and Shen, {C. P.} and Shiu, {J. G.} and P. Smerkol and Sohn, {Y. S.} and A. Sokolov and E. Solovieva and S. Stanič and M. Starič and K. Sumisawa and T. Sumiyoshi and S. Tanaka and Y. Teramoto and M. Uchida and S. Uehara and T. Uglov and Y. Unno and S. Uno and G. Varner and A. Vinokurova and Wang, {C. H.} and E. Won and Yabsley, {B. D.} and Y. Yamashita and Zhang, {C. C.} and Zhang, {Z. P.} and P. Zhou and T. Zivko and A. Zupanc",
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doi = "10.1103/PhysRevD.84.021101",
language = "English",
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journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",
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Bahinipati, S, Trabelsi, K, Kinoshita, K, Arinstein, K, Aulchenko, V, Aushev, T, Bakich, AM, Balagura, V, Barberio, E, Belous, K, Bhardwaj, V, Bhuyan, B, Bischofberger, M, Bondar, A, Bozek, A, Bračko, M, Chen, A, Chen, P, Cheon, BG, Chiang, CC, Cho, IS, Cho, K, Choid, Y, Dalseno, J, Dalsžal, Z, Drásal, Z, Eidelman, S, Gabyshev, N, Golob, B, Ha, H, Horii, Y, Hoshi, Y, Hou, WS, Hsiung, YB, Hyun, HJ, Ishikawa, A, Iwabuchi, M, Iwasaki, Y, Iwashita, T, Julius, T, Kang, JH, Kiesling, C, Kim, HJ, Kim, MJ, Ko, BR, Kobayashi, N, Kodyš, P, Križan, P, Kumita, T, Kwon, YJ, Kyeong, SH, Lange, JS, Lee, MJ, Lee, SH, Li, J, Liu, C, Louvot, R, Matyja, A, Mconie, S, Miyabayashi, K, Miyata, H, Miyazaki, Y, Mohanty, GB, Nakao, M, Natkaniec, Z, Neubauer, S, Nishida, S, Nitoh, O, Ogawa, S, Ohshima, T, Pakhlov, P, Park, CW, Petrič, M, Piilonen, LE, Poluektov, A, Röhrken, M, Sahoo, H, Sakai, Y, Schneider, O, Schwanda, C, Schwartz, AJ, Sevior, ME, Shapkin, M, Shen, CP, Shiu, JG, Smerkol, P, Sohn, YS, Sokolov, A, Solovieva, E, Stanič, S, Starič, M, Sumisawa, K, Sumiyoshi, T, Tanaka, S, Teramoto, Y, Uchida, M, Uehara, S, Uglov, T, Unno, Y, Uno, S, Varner, G, Vinokurova, A, Wang, CH, Won, E, Yabsley, BD, Yamashita, Y, Zhang, CC, Zhang, ZP, Zhou, P, Zivko, T & Zupanc, A 2011, 'Measurements of time-dependent CP asymmetries in B→D* π± decays using a partial reconstruction technique', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 84, no. 2, 021101. https://doi.org/10.1103/PhysRevD.84.021101

Measurements of time-dependent CP asymmetries in B→D* π± decays using a partial reconstruction technique. / Bahinipati, S.; Trabelsi, K.; Kinoshita, K.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Balagura, V.; Barberio, E.; Belous, K.; Bhardwaj, V.; Bhuyan, B.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bračko, M.; Chen, A.; Chen, P.; Cheon, B. G.; Chiang, C. C.; Cho, I. S.; Cho, K.; Choid, Y.; Dalseno, J.; Dalsžal, Z.; Drásal, Z.; Eidelman, S.; Gabyshev, N.; Golob, B.; Ha, H.; Horii, Y.; Hoshi, Y.; Hou, W. S.; Hsiung, Y. B.; Hyun, H. J.; Ishikawa, A.; Iwabuchi, M.; Iwasaki, Y.; Iwashita, T.; Julius, T.; Kang, J. H.; Kiesling, C.; Kim, H. J.; Kim, M. J.; Ko, B. R.; Kobayashi, N.; Kodyš, P.; Križan, P.; Kumita, T.; Kwon, Y. J.; Kyeong, S. H.; Lange, J. S.; Lee, M. J.; Lee, S. H.; Li, J.; Liu, C.; Louvot, R.; Matyja, A.; Mconie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G. B.; Nakao, M.; Natkaniec, Z.; Neubauer, S.; Nishida, S.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Pakhlov, P.; Park, C. W.; Petrič, M.; Piilonen, L. E.; Poluektov, A.; Röhrken, M.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schwanda, C.; Schwartz, A. J.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shiu, J. G.; Smerkol, P.; Sohn, Y. S.; Sokolov, A.; Solovieva, E.; Stanič, S.; Starič, M.; Sumisawa, K.; Sumiyoshi, T.; Tanaka, S.; Teramoto, Y.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Varner, G.; Vinokurova, A.; Wang, C. H.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Zhang, C. C.; Zhang, Z. P.; Zhou, P.; Zivko, T.; Zupanc, A.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 84, No. 2, 021101, 05.07.2011.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Measurements of time-dependent CP asymmetries in B→D* π± decays using a partial reconstruction technique

AU - Bahinipati, S.

AU - Trabelsi, K.

AU - Kinoshita, K.

AU - Arinstein, K.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Barberio, E.

AU - Belous, K.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Bischofberger, M.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Chen, A.

AU - Chen, P.

AU - Cheon, B. G.

AU - Chiang, C. C.

AU - Cho, I. S.

AU - Cho, K.

AU - Choid, Y.

AU - Dalseno, J.

AU - Dalsžal, Z.

AU - Drásal, Z.

AU - Eidelman, S.

AU - Gabyshev, N.

AU - Golob, B.

AU - Ha, H.

AU - Horii, Y.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Hyun, H. J.

AU - Ishikawa, A.

AU - Iwabuchi, M.

AU - Iwasaki, Y.

AU - Iwashita, T.

AU - Julius, T.

AU - Kang, J. H.

AU - Kiesling, C.

AU - Kim, H. J.

AU - Kim, M. J.

AU - Ko, B. R.

AU - Kobayashi, N.

AU - Kodyš, P.

AU - Križan, P.

AU - Kumita, T.

AU - Kwon, Y. J.

AU - Kyeong, S. H.

AU - Lange, J. S.

AU - Lee, M. J.

AU - Lee, S. H.

AU - Li, J.

AU - Liu, C.

AU - Louvot, R.

AU - Matyja, A.

AU - Mconie, S.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mohanty, G. B.

AU - Nakao, M.

AU - Natkaniec, Z.

AU - Neubauer, S.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Pakhlov, P.

AU - Park, C. W.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Poluektov, A.

AU - Röhrken, M.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shiu, J. G.

AU - Smerkol, P.

AU - Sohn, Y. S.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Stanič, S.

AU - Starič, M.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Tanaka, S.

AU - Teramoto, Y.

AU - Uchida, M.

AU - Uehara, S.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Varner, G.

AU - Vinokurova, A.

AU - Wang, C. H.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamashita, Y.

AU - Zhang, C. C.

AU - Zhang, Z. P.

AU - Zhou, P.

AU - Zivko, T.

AU - Zupanc, A.

PY - 2011/7/5

Y1 - 2011/7/5

N2 - We report results on time-dependent CP asymmetries in B→D *π± decays based on a data sample containing 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at the Υ(4S) resonance. We use a partial reconstruction technique, wherein signal B→D* π± events are identified using information only from the fast pion from the B decay and the slow pion from the subsequent decay of the D*, where the former (latter) corresponds to D*+(D*-) final states. We obtain CP violation parameters S+=+0.061±0. 018(stat)±0.012(syst) and S-=+0.031±0.019(stat) ±0.015(syst).

AB - We report results on time-dependent CP asymmetries in B→D *π± decays based on a data sample containing 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at the Υ(4S) resonance. We use a partial reconstruction technique, wherein signal B→D* π± events are identified using information only from the fast pion from the B decay and the slow pion from the subsequent decay of the D*, where the former (latter) corresponds to D*+(D*-) final states. We obtain CP violation parameters S+=+0.061±0. 018(stat)±0.012(syst) and S-=+0.031±0.019(stat) ±0.015(syst).

UR - http://www.scopus.com/inward/record.url?scp=80051766063&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80051766063&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.84.021101

DO - 10.1103/PhysRevD.84.021101

M3 - Article

AN - SCOPUS:80051766063

VL - 84

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

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

SN - 1550-7998

IS - 2

M1 - 021101

ER -