Measurment of branching fractions and search for <i>CP</i> violation in <i>D</i><SUP>0 </SUP>→ π<SUP>+</SUP>π<SUP>-</SUP>η, <i>D</i><SUP>0</SUP> → <i>K</i><SUP>+</SUP><i>K</i><SUP>-</SUP>η, and <i>D</i><SUP>0</SUP> → φη at Belle
  • Li, L. K.
  • Schwartz, A. J.
  • Kinoshita, K.
  • Adachi, I
  • Aihara, H.
  • ... Choi, S-K
  • 외 183명
Citations

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7

초록

We measure the branching fractions and CP asymmetries for the singly Cabibbo-suppressed decays D-0 -> pi(+)pi(-)eta, D-0 -> K+K-eta, and D-0 -> phi eta, using 980 fb(-1) of data from the Belle experiment at the KEKB e(+)e(-) collider. We obtain B(D-0 -> pi+pi-eta) = [1.22 +/- 0.02 (stat) +/- 0.02 (syst) +/- 0.03 (B-ref)] x 10(-3), B(D-0 -> K+K-eta) = [1.801(-0.06)(+0.07) (stat) +/- 0.04 (syst) +/- 0.05 (B-ref)] x 10(-4), B(D-0 -> phi eta) = [1.84 +/- 0.09 (stat) +/- 0.06 (syst) +/- 0.05 (B-ref)] x 10(-4), where the third uncertainty (B-ref) is from the uncertainty in the branching fraction of the reference mode D-0 -> K-pi(+)eta. The color-suppressed decay D-0 -> phi eta is observed for the first time, with very high significance. The results for the CP asymmetries are A(CP) (D-0 -> pi(+)pi(-)eta) = [0.9 +/- 1.2 (stat) +/- 0.5 (syst)]%, A(CP)(D-0 -> K+K-eta)=[-1.4 +/- 3.3 (stat) +/- 1.1 (syst)]%, A(CP)(D-0 -> phi eta) = [-1.9 +/- 4.4 (stat) +/- 0.6 (syst)]%. The results for D-0 -> pi(+)pi(-)eta are a significant improvement over previous results. The branching fraction and Acp results for D-0 -> K+K-eta, and the A(CP) result for D-0 -> phi eta, are the first such measurements. No evidence for CP violation is found in any of these decays.

키워드

Branching fractionCharm physicsCP violatione(+)-e(-) ExperimentsIDENTIFICATION
제목
Measurment of branching fractions and search for <i>CP</i> violation in <i>D</i><SUP>0 </SUP>→ π<SUP>+</SUP>π<SUP>-</SUP>η, <i>D</i><SUP>0</SUP> → <i>K</i><SUP>+</SUP><i>K</i><SUP>-</SUP>η, and <i>D</i><SUP>0</SUP> → φη at Belle
저자
Li, L. K.Schwartz, A. J.Kinoshita, K.Adachi, IAihara, H.Al Said, S.Asner, D. M.Atmacan, H.Aulchenko, VAushev, T.Ayad, R.Babu, VBahinipati, S.Behera, P.Bennett, J.Bessner, M.Bilka, T.Biswal, J.Bobrov, A.Bonvicini, G.Bozek, A.Bracko, M.Branchini, P.Browder, T. E.Budano, A.Campajola, M.Cervenkov, D.Chang, M-CChang, P.Chekelian, VChen, A.Chen, Y. Q.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Cho, S-JChoi, S-KChoi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.Das, S.Dash, N.De Nardo, G.De Pietro, G.Dhamija, R.Di Capua, F.Dolezal, Z.Dong, T., VEidelman, S.Epifanov, D.Ferber, T.Fulsom, B. G.Garg, R.Gaur, VGiri, A.Goldenzweig, P.Golob, B.Graziani, E.Gu, T.Guan, Y.Hadjivasiliou, C.Halder, S.Hayasaka, K.Hou, W-SInami, K.Ishikawa, A.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jang, E-JJia, S.Jin, Y.Joo, K. K.Kang, K. H.Karyan, G.Kiesling, C.Kim, C. H.Kim, D. Y.Kim, K-HKim, S. H.Kim, Y-KKodys, P.Konno, T.Korobov, A.Korpar, S.Kovalenko, E.Krizan, P.Kroeger, R.Krokovny, P.Kuhr, T.Kumar, M.Kumara, K.Kuzmin, A.Kwon, Y-JLalwani, K.Laurenza, M.Lee, S. C.Li, C. H.Li Gioi, L.Libby, J.Lieret, K.Liventsev, D.Masuda, M.Matvienko, D.Merola, M.Metzner, F.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Mori, T.Nakao, M.Natkaniec, Z.Natochii, A.Nayak, L.Nayak, M.Niiyama, M.Nisar, N. K.Nishida, S.Nishimura, K.Ono, H.Oskin, P.Pakhlov, P.Pakhlova, G.Pardi, S.Park, S-HPasseri, A.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Podobnik, T.Popov, VPrencipe, E.Prim, M. T.Rout, N.Russo, G.Sahoo, D.Sakai, Y.Sandilya, S.Sangal, A.Santelj, L.Sanuki, T.Savinov, VSchnell, G.Schwanda, C.Seino, Y.Senyo, K.Shapkin, M.Sharma, C.Shen, C. P.Shiu, J-GShwartz, B.Sokolov, A.Solovieva, E.Staric, M.Stottler, Z. S.Sumihama, M.Sumiyoshi, T.Takizawa, M.Tanida, K.Tenchini, F.Uchida, M.Uglov, T.Unno, Y.Uno, K.Uno, S.Vahsen, S. E.Van Tonder, R.Varner, G.Vinokurova, A.Waheed, E.Wang, C. H.Wang, M-ZWang, P.Wang, X. L.Watanuki, S.Won, E.Yabsley, B. D.Yan, W. B.Yang, S. B.Ye, H.Yelton, J.Yin, J. H.Yusa, Y.Zhang, Z. P.Zhilich, VZhukova, V
DOI
10.1007/JHEP09(2021)075
발행일
2021-09
유형
Article
저널명
Journal of High Energy Physics
9