Measurement of branching fraction and time-dependent CP asymmetry parameters in B^0 → D^*+D^*-K^{0}_{S}decays

Dalseno, J.; Adachi, I.; Aihara, H.; Aushev, T.; Bakich, A. M.; Balagura, V.; Bay, A.; Bitenc, U.; Bizjak, I.; Bozek, A.; Bracˇko, M.; Ogawa, S.; Ohshima, T.; Okuno, S.; Onuki, Y.; Ostrowicz, W.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, C.W.; Park, H.; Sumisawa, K.; Park, K. S.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schümann, J.; Seidl, R.; Sekiya, A.; Senyo, K.; Sumiyoshi, T.; Sevior, M. E.; Shapkin, M.; Shibuya, H.; Singh, J. B.; Sokolov, A.; Somov, A.; Stanic, S.; Staric, M.; Stoeck, H.; Takasaki, F.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Tian, X. C.; Tsukamoto, T.; Uehara, S.; Ueno, K.; Browder, T. E.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Varner, G.; Villa, S.; Vinokurova, A.; Wang, C. C.; Wang, C. H.; Watanabe, Y.; Chao, Y.; Wedd, R.; Won, E.; Yabsley, B. D.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Zhang, Z. P.; Zhilich, V.; Zupanc, A.; Chen, A.; Cheon, B. G.; Chistov, R.; Cho, I.-S.; Choi, Y.; Choi, Y. K.; Danilov, M.; Dash, M.; Drutskoy, A.; Eidelman, S.; Go, A.; Ha, H.; Hayasaka, K.; Hazumi, M.; Heffernan, D.; Hokuue, T.; Hyun, H. J.; Inami, K.; Ishikawa, A.; Ishino, H.; Iwasaki, M.; Iwasaki, Y.; Joshi, N. J.; Kah, D. H.; Kang, J. H.; Kapusta, P.; Katayama, N.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, H. J.; Kim, Y. J.; Kinoshita, K.; Krizˇan, P.; Krokovny, P.; Kumar, R.; Kuo, C. C.; Kuzmin, A.; Kwon, Y.-J.; Lee, J. S.; Lee, S. E.; Lesiak, T.; Li, J.; Limosani, A.; Lin, S.-W.; Liventsev, D.; Mandl, F.; Matsumoto, T.; McOnie, S.; Medvedeva, ﻿T.; Mitaroff, W.; Miyake, H.; Miyata, H.; Moloney, G. R.; Nakano, E.; Nakao, M.; Nishida, S.; Nitoh, O.

doi:https://doi.org/10.1103/PhysRevD.76.072004

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These results are obtained from a 414 fb^{-1} data sample that contains 449×10^6 B\\bar{B} pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy  e^+e^- collider. We obtain the branching fraction, B(B^0→D^*+D*^-K^{O}_{S})=  [3.4±0.4(stat)±0.7(syst)]×10^-3, which is in agreement with the current world average. We also obtain an upper limit on the product branching fraction for a possible two-body decay, B(B^0 → D_s1^+(2536)D^*-)B(D_s1^+(2536)→ D^*+K^{O}_{S})\u003c7.1×10^{-4} (90% CL). In the traditional 2-parameter time-dependent CP analysis, we measure the CP violation parameters, A_CP=-0.01^{+0.28}_{-0.28}(stat)±0.09(syst), Dsin2φ_1=0.06^{+0.45}_{-0.44}(stat)±0.06(syst).  No evidence for either mixing-induced or direct CP violation is found. In a 3-parameter fit sensitive to cos2φ_1 performed in the half-Dalitz spaces, s^≤ s^+ and s^-\u003es^+, where s^±[equivalent]m2(D^*±K^{0}_{S}), we extract the CP violation parameters,  J_c/J_0=0.60^{+0.25}_{-0.28}(stat)±0.08(syst), 2J_s1/J_0sin2φ_1=-0.17^{+0.42}_{-0.42}(stat)±0.09(syst),  2J_s2/J_0cos2φ_1=-0.23^{+0.43}_{-0.41}(stat)±0.13(syst). A large value of J_c/J_0  would indicate a significant resonant contribution from a broad unknown D_s^**+ state.  Although the sign of the factor, 2J_s2/J_0, can be deduced from theory, no conclusion can be  drawn regarding the sign of cos2φ_1 given the errors.", "subitem_description_language": "en", "subitem_description_type": "Abstract"}]}, "item_10_identifier_60": {"attribute_name": "URI", "attribute_value_mlt": [{"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/2237/11354"}]}, "item_10_publisher_32": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "American Physical Society", "subitem_publisher_language": "en"}]}, "item_10_relation_11": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type": "isVersionOf", "subitem_relation_type_id": {"subitem_relation_type_id_text": "https://doi.org/10.1103/PhysRevD.76.072004", "subitem_relation_type_select": "DOI"}}]}, "item_10_rights_12": {"attribute_name": "権利", "attribute_value_mlt": [{"subitem_rights": "American Physical Society, All rights reserved.", "subitem_rights_language": "en"}]}, "item_10_select_15": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_10_source_id_7": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "1550-7998", "subitem_source_identifier_type": "PISSN"}]}, "item_10_text_14": {"attribute_name": "フォーマット", "attribute_value_mlt": [{"subitem_text_value": "application/pdf"}]}, "item_1615787544753": {"attribute_name": "出版タイプ", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_970fb48d4fbd8a85", "subitem_version_type": "VoR"}]}, "item_access_right": {"attribute_name": "アクセス権", "attribute_value_mlt": [{"subitem_access_right": "open access", "subitem_access_right_uri": "http://purl.org/coar/access_right/c_abf2"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Dalseno, J.", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "28682", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Adachi, I.", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "28683", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Aihara, H.", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "28684", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Aushev, T.", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "28685", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Bakich, A. 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Measurement of branching fraction and time-dependent CP asymmetry parameters in B^0 → D^+D^-K^{0}_{S}decays

http://hdl.handle.net/2237/11354

名前 / ファイル	ライセンス	アクション
PhysRevD_76_072004.pdf (274.0 kB)

Item type

学術雑誌論文 / Journal Article(1)

公開日

2009-03-25

タイトル

Measurement of branching fraction and time-dependent CP asymmetry parameters in B^0 → D^*+D^*-K^{0}_{S}decays

言語

著者

Dalseno, J.
Adachi, I.
Aihara, H.
Aushev, T.
Bakich, A. M.
Balagura, V.
Bay, A.
Bitenc, U.
Bizjak, I.
Bozek, A.
Bracˇko, M.
Ogawa, S.
Ohshima, T.
Okuno, S.
Onuki, Y.
Ostrowicz, W.
Ozaki, H.
Pakhlov, P.
Pakhlova, G.
Park, C.W.
Park, H.
Sumisawa, K.
Park, K. S.
Pestotnik, R.
Piilonen, L. E.
Sahoo, H.
Sakai, Y.
Schneider, O.
Schümann, J.
Seidl, R.
Sekiya, A.
Senyo, K.
Sumiyoshi, T.
Sevior, M. E.
Shapkin, M.
Shibuya, H.
Singh, J. B.
Sokolov, A.
Somov, A.
Stanic, S.
Staric, M.
Stoeck, H.
Takasaki, F.
Tanaka, M.
Taylor, G. N.
Teramoto, Y.
Tian, X. C.
Tsukamoto, T.
Uehara, S.
Ueno, K.
Browder, T. E.
Uglov, T.
Unno, Y.
Uno, S.
Urquijo, P.
Varner, G.
Villa, S.
Vinokurova, A.
Wang, C. C.
Wang, C. H.
Watanabe, Y.
Chao, Y.
Wedd, R.
Won, E.
Yabsley, B. D.
Yamaguchi, A.
Yamashita, Y.
Yamauchi, M.
Zhang, Z. P.
Zhilich, V.
Zupanc, A.
Chen, A.
Cheon, B. G.
Chistov, R.
Cho, I.-S.
Choi, Y.
Choi, Y. K.
Danilov, M.
Dash, M.
Drutskoy, A.
Eidelman, S.
Go, A.
Ha, H.
Hayasaka, K.
Hazumi, M.
Heffernan, D.
Hokuue, T.
Hyun, H. J.
Inami, K.
Ishikawa, A.
Ishino, H.
Iwasaki, M.
Iwasaki, Y.
Joshi, N. J.
Kah, D. H.
Kang, J. H.
Kapusta, P.
Katayama, N.
Kawai, H.
Kawasaki, T.
Kichimi, H.
Kim, H. J.
Kim, Y. J.
Kinoshita, K.
Krizˇan, P.
Krokovny, P.
Kumar, R.
Kuo, C. C.
Kuzmin, A.
Kwon, Y.-J.
Lee, J. S.
Lee, S. E.
Lesiak, T.
Li, J.
Limosani, A.
Lin, S.-W.
Liventsev, D.
Mandl, F.
Matsumoto, T.
McOnie, S.
Medvedeva, T.
Mitaroff, W.
Miyake, H.
Miyata, H.
Moloney, G. R.
Nakano, E.
Nakao, M.
Nishida, S.
Nitoh, O.

アクセス権

open access

アクセス権URI

http://purl.org/coar/access_right/c_abf2

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言語

権利情報

抄録

内容記述

We present a measurement of the branching fraction and time-dependent CP violation parameters for B^0 → D^*+D^*-K^{0}_{S} decays. These results are obtained from a 414 fb^{-1} data sample that contains 449×10^6 B\bar{B} pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. We obtain the branching fraction, B(B^0→D^*+D*^-K^{O}_{S})= [3.4±0.4(stat)±0.7(syst)]×10^-3, which is in agreement with the current world average. We also obtain an upper limit on the product branching fraction for a possible two-body decay, B(B^0 → D_s1^+(2536)D^*-)B(D_s1^+(2536)→ D^*+K^{O}_{S})<7.1×10^{-4} (90% CL). In the traditional 2-parameter time-dependent CP analysis, we measure the CP violation parameters, A_CP=-0.01^{+0.28}_{-0.28}(stat)±0.09(syst), Dsin2φ_1=0.06^{+0.45}_{-0.44}(stat)±0.06(syst). No evidence for either mixing-induced or direct CP violation is found. In a 3-parameter fit sensitive to cos2φ_1 performed in the half-Dalitz spaces, s^≤ s^+ and s^->s^+, where s^±[equivalent]m2(D^*±K^{0}_{S}), we extract the CP violation parameters, J_c/J_0=0.60^{+0.25}_{-0.28}(stat)±0.08(syst), 2J_s1/J_0sin2φ_1=-0.17^{+0.42}_{-0.42}(stat)±0.09(syst), 2J_s2/J_0cos2φ_1=-0.23^{+0.43}_{-0.41}(stat)±0.13(syst). A large value of J_c/J_0 would indicate a significant resonant contribution from a broad unknown D_s^**+ state. Although the sign of the factor, 2J_s2/J_0, can be deduced from theory, no conclusion can be drawn regarding the sign of cos2φ_1 given the errors.

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内容記述タイプ

Abstract

出版者

言語

出版者

American Physical Society

言語

eng

資源タイプ

資源タイプresource

http://purl.org/coar/resource_type/c_6501

タイプ

journal article

出版タイプ

VoR

出版タイプResource

http://purl.org/coar/version/c_970fb48d4fbd8a85

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2021-03-01 11:57:19.092942

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Measurement of branching fraction and time-dependent CP asymmetry parameters in B^0 → D^*+D^*-K^{0}_{S}decays

× Dalseno, J.

× Adachi, I.

× Aihara, H.

× Aushev, T.

× Bakich, A. M.

× Balagura, V.

× Bay, A.

× Bitenc, U.

× Bizjak, I.

× Bozek, A.

× Bracˇko, M.

× Ogawa, S.

× Ohshima, T.

× Okuno, S.

× Onuki, Y.

× Ostrowicz, W.

× Ozaki, H.

× Pakhlov, P.

× Pakhlova, G.

× Park, C.W.

× Park, H.

× Sumisawa, K.

× Park, K. S.

× Pestotnik, R.

× Piilonen, L. E.

× Sahoo, H.

× Sakai, Y.

× Schneider, O.

× Schümann, J.

× Seidl, R.

× Sekiya, A.

× Senyo, K.

× Sumiyoshi, T.

× Sevior, M. E.

× Shapkin, M.

× Shibuya, H.

× Singh, J. B.

× Sokolov, A.

× Somov, A.

× Stanic, S.

× Staric, M.

× Stoeck, H.

× Takasaki, F.

× Tanaka, M.

× Taylor, G. N.

× Teramoto, Y.

× Tian, X. C.

× Tsukamoto, T.

× Uehara, S.

× Ueno, K.

× Browder, T. E.

× Uglov, T.

× Unno, Y.

× Uno, S.

× Urquijo, P.

× Varner, G.

× Villa, S.

× Vinokurova, A.

× Wang, C. C.

× Wang, C. H.

× Watanabe, Y.

× Chao, Y.

× Wedd, R.

× Won, E.

× Yabsley, B. D.

× Yamaguchi, A.

× Yamashita, Y.

× Yamauchi, M.

× Zhang, Z. P.

× Zhilich, V.

× Zupanc, A.

× Chen, A.

× Cheon, B. G.

× Chistov, R.

× Cho, I.-S.

× Choi, Y.

Measurement of branching fraction and time-dependent CP asymmetry parameters in B^0 → D^+D^-K^{0}_{S}decays

× Medvedeva, T.