Measurement of branching fractions and search for $CP$ violation in $D^{0}\to\pi^{+}\pi^{-}\eta$, $D^{0}\to K^{+}K^{-}\eta$, and $D^{0}\to\phi\eta$ at Belle

  title={Measurement of branching fractions and search for \$CP\$ violation in \$D^\{0\}\to\pi^\{+\}\pi^\{-\}\eta\$, \$D^\{0\}\to K^\{+\}K^\{-\}\eta\$, and \$D^\{0\}\to\phi\eta\$ at Belle},
  author={Belle Collaboration Y. Li and Allan J. Schwartz and Keisuke Kinoshita and Iki Adachi and Hiroaki Aihara and S. al Said and David Asner and Hulya Atmacan and Vladimir M. Aulchenko and T. A.-Kh. Aushev and Rachid Ayad and Varghese Babu and Seema Bahinipati and P. K. Behera and J. V. Bennett and Martin Florian Bessner and Tadeas Bilka and J. P. Biswal and A. Bobrov and Gianni Bonvicini and Andrz{\'e}j Bozek and M. Brav and Paolo Branchini and T. E. Browder and Antonio Budano and Marcello Campajola and D. V. and M. -C. Chang and P Chang and Vladimir Chekelian and A. A. Chen and Y. Q. Chen and B. G. Cheon and Kirill Chilikin and H. -E. Cho and K. Cho and S.-J. Cho and S-K. Choi and Y. K. Choi and S. R. Choudhury and David Anthony Cinabro and Samuel Cunliffe and S. B. Das and Nitali Dash and G. De Nardo and Giacomo De Pietro and R K Dhamija and Francesco Di Capua and Zippi Dolev and Thanh Van Dong and Simon I. Eidelman and Denis Epifanov and Torben Ferber and B. G. Fulsom and R. Garg and Vinod K. Gaur and Anjan Kumar Giri and Pablo D. Goldenzweig and Bo{\vs}tjan Golob and Enrico Graziani and Tao Gu and Yanjun Guan and Ch. Hadjivasiliou and Soumen Halder and K. Hayasaka and Wei-Shu Hou and Kenji Inami and Akira Ishikawa and M. Iwasaki and Yoh Iwasaki and William W. Jacobs and E. J. Jang and Sen Jia and Y. J. Jin and Kyung Kwang Joo and Kookjin Kang and Gevorg Karyan and Ch. Kiesling and C. H. Kim and D. Y.-J. Kim and K.-H. Kim and S. H. Kim and Y.-K. Kim and P. Kodyv and Tomoyuki Konno and Alexander Korobov and Samo Korpar and E. Kovalenko and P. Kriv and Robert Kroeger and Pavel Krokovny and Thomas Kuhr and M. Kumar and K. Kumara and Alexei Kuzmin and Y.-J. Kwon and Kavita Lalwani and Monica Laurenza and S. C. Lee and C. H. Li and L. Li Gioi and James Frederick Libby and Kilian Lieret and Dmitriy V. Liventsev and M. Masuda and Dmitry Matvienko and Mario Merola and Franka Metzner and Kenkichi Miyabayashi and R. Mizuk and G B Mohanty and T. Mori and M. Nakao and Zbigniew Natkaniec and A. Natochii and Lopamudra Nayak and M. Nayak and Masayuki Niiyama and N. K. Nisar and Shin'ya Nishida and Kurtis Alan Nishimura and H. Ono and P. Oskin and P. Pakhlov and Galina Pakhlova and Silvio Pardi and Sheong Hwan Park and Antonio Passeri and Soumen Paul and Todd Kristofer Pedlar and Rok Pestotnik and Leo Piilonen and Toma{\vz} Podobnik and V. Popov and Elisabetta Prencipe and Markus Tobias Prim and Niharika Rout and Guido Russo and Debashis Sahoo and Yoshihide Sakai and S. Sandilya and Anuj Sangal and Luka {\vS}antelj and Tomoyuki Sanuki and Vladimir Savinov and G. Schnell and C. Schwanda and Yoshiaki Seino and Katsumi Senyo and Mikhail Shapkin and C. Sharma and Cheng-ping Shen and J. -G. Shiu and Boris A. Shwartz and Alexei Sokolov and Elena Solovieva and M. Stariv and Zachary Stottler and Mizuki Sumihama and Takayuki Sumiyoshi and Makoto Takizawa and Kiyoshi Tanida and Francesco Tenchini and Masaki Uchida and Timofey Uglov and Y. Unno and Kentaro Uno and Shoji Uno and Sven E. Vahsen and Raynette van Tonder and G. S. Varner and Anna Viktorovna Vinokurova and E. Waheed and C. H. Wang and M.-Z. Wang and P. Wang and X. L. Wang and Shoichi Watanuki and E. Won and B. Yabsley and W. B. Yan and S. B. Yang and H Y Ye and J. Yelton and J. H. Yin and Yosuke Yusa and Z. P. Zhang and V. N. Zhilich and Victoria Zhukova},
We measure the branching fractions and CP asymmetries for the singly Cabibbo-suppressed decays D0 → π+π−η, D0 → K+K−η, and D0 → φη, using 980 fb−1 of data from the Belle experiment at the KEKB e+e− collider. We obtain B(D → π+π−η) = [1.22 ± 0.02 (stat)± 0.02 (syst)± 0.03 (Bref)]× 10−3 , B(D → K+K−η) = [1.80 −0.06 (stat)± 0.04 (syst)± 0.05 (Bref)]× 10−4 , B(D → φη) = [1.84 ± 0.09 (stat)± 0.06 (syst)± 0.05 (Bref)]× 10−4 , where the third uncertainty (Bref) is from the uncertainty in the branching… Expand

Figures and Tables from this paper


Observation of CP Violation in Charm Decays.
The first observation of CP violation in the decay of charm hadrons is observed, where the measured value differs from zero by more than 5 standard deviations. Expand
Direct CP violation in two-body hadronic charmed meson decays
Motivated by the recent observation of $CP$ violation in the charm sector by LHCb, we study direct $CP$ asymmetries in the standard model (SM) for the singly Cabibbo-suppressed two-body hadronicExpand
New physics and CP violation in singly Cabibbo suppressed D decays
We analyze various theoretical aspects of $CP$ violation in singly Cabibbo suppressed (SCS) $D$ meson decays, such as $D\ensuremath{\rightarrow}KK,\ensuremath{\pi}\ensuremath{\pi}$. In particular, weExpand
Measurement of branching fractions for D meson decaying into ϕ meson and a pseudoscalar meson
Abstract The four decay modes D 0 → ϕ π 0 , D 0 → ϕ η , D + → ϕ π + , and D + → ϕ K + are studied by using a data sample taken at the centre-of-mass energy s = 3.773 GeV with the BESIII detector,Expand
Hadronic D decays involving scalar mesons
The nonleptonic weak decays of charmed mesons into a scalar meson and a pseudoscalar meson are studied. The scalar mesons under consideration are $\sigma$ [or $f_0(600)$], $\kappa$, $f_0(980)$,Expand
Observation of the radiative decay D*+→D+ γ
We have observed a signal for the decay D^(*+)→D^+γ at a significance of 4 standard deviations. From the measured branching ratio B(D^(*+)→D^+γ)/B(D^(*+)→D^+π^0) = 0.055±0.014±0.010 we findExpand
Search for CP-Violation in D 0 → π 0 π 0 π 0 Decays
I have searched for a CP violating asymmetry in the neutral charm meson decay of D -> π 0 π 0 π 0 . I present here a brief description of CP violation and the CLEO II.V detector, the methods used toExpand
Revisiting CP violation in D→PP and VP decays
Direct CP violation in the hadronic charm decays provides a good testing ground for the Kobayashi-Maskawa mechanism in the Standard Model. Any significant deviations from the expectation would beExpand
Branching ratios and direct CP asymmetries in D -> PV decays
We study the two-body hadronic D -> PV decays, where P (V) denotes a pseudoscalar (vector) meson, in the factorization- assisted topological- amplitude approach proposed in our previous work. ThisExpand
Dalitz analysis of the three-body charmless decays B+ ---> K+ pi+ pi- and B+ ---> K+ K+ K-
We report results on the Dalitz analysis of three-body charmless B+ -> K+ pi(+) pi(-) and B+-> K+ K+ K- decays based on a 140 fb(-1) data sample collected with the Belle detector. Measurements ofExpand