Observation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>D</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>η</mml:mi><mml:mo stretchy="false">(</mml:mo></mml:msup><mml:msup><mml:mo>′</mml:mo><mml:mo stretchy="false">)</mml:mo></mml:msup></mml:math>and Search for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:ma

Won, E.; Ko, B. R.; Adachi, I.; Aihara, H.; Arinstein, K.; Asner, D. M.; Aushev, T.; Bakich, A. M.; Barberio, E. L.; Bay, A.; Bhardwaj, V.; Bhuyan, B.; Bischofberger, M.; Bondar, A.; Bożek, A.; Bračko, M.; Brodzicka, J.; Browder, T. E.; Chang, P.; Chen, A.; Chen, P.; Cheon, B. G.; Chilikin, K.; Cho, I. S.; Cho, K.; Choi, S. K.; Choi, Y.; Dalseno, J.; Danilov, M.; Doležal, Z.; Drásal, Z.; Drutskoy, A.; Eidelman, S.; Fast, J. E.; Gaur, V.; Gabyshev, N.; Garmash, A.; Goh, Y. M.; Golob, B.; Haba, J.; Hara, T.; Hayasaka, K.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hou, W.-S.; Hsiung, Y.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwabuchi, M.; Iwasaki, Y.; Iwashita, T.; Joshi, N. J.; Julius, T.; Kang, J. H.; Katayama, N.; Kawasaki, T.; Kichimi, H.; Kim, H. J.; Kim, H. O.; Kim, J. B.; Kim, J. H.; Kim, K. T.; Kim, M. J.; Kim, S. K.; Kim, Y. J.; Kinoshita, K.; Kobayashi, N.; Koblitz, S.; Kodyš, P.; Korpar, S.; Križan, P.; Kumita, T.; Kuzmin, A.; Kwon, Y. J.; Lange, J. S.; Lee, M. J.; Lee, S. H.; Li, J.; Li, Y.; Libby, J.; Lim, C. L.; Liu, C.; Liu, Y.; Liventsev, D.; Louvot, R.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Mohanty, G. B.; Nagasaka, Y.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Neubauer, S.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Pakhlov, P.; Pakhlova, G.; Park, H.; Park, H. K.; Park, K. S.; Pestotnik, R.; Petrič, M.; Piilonen, L. E.; Röhrken, M.; Ryu, S.; Sahoo, H.; Sakai, Kenichi; Sakai, Y.; Sanuki, T.; Schneider, O.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Seon, O.; Sevior, M. E.; Shen, C. P.; Shibata, T. A.; Shiu, J. G.; Simon, F.; Singh, J. B.; Smerkol, P.; Sohn, Y. S.; Sokolov, A.; Solovieva, E.; Stanič, S.; Starič, M.; Sumihama, M.; Sumiyoshi, T.; Suzuki, S.; Tatishvili, G.; Teramoto, Y.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Usov, Y.; Vahsen, S.; Varner, G.; Vinokurova, A.; Wang, C. H.; Wang, M. Z.; Wang, P.; Watanabe, M.; Watanabe, Y.; Williams, K. M.; Yabsley, B.; Yamashita, Y.; Yamauchi, M.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.; Zyukova, O.

doi:10.1103/physrevlett.107.221801

Cited by 15 publications

(4 citation statements)

References 16 publications

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“…where the final uncertainties are from the limited precision of the CP asymmetries of the control channels, which are taken from external inputs [29,30]. These values are consistent with CP conservation and improve significantly over the previously best existing measurements performed with data from e + e − collisions [31,32]. The results show that LHCb can significantly contribute to investigating decays with neutral particles in the final state too.…”

Section: Developments At Lhcbsupporting

confidence: 75%

Phenomenological and Experimental Developments in Charm Physics: The WG7 Report from CKM 2016

Casarosa¹,

Canto²,

Paul³

2017

Preprint

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We present an overview of recent developments in charm physics reported in the Working Group 7 meetings of the CKM 2016 workshop. Progresses in experimental analysis and techniques were reported by LHCb, Belle, BABAR and BESIII along with projections for the future. Developments were also reported in the phenomenological extraction of both direct and indirect CP violation from data in two-, three-and four-body hadronic decays of the D mesonic system.

show abstract

Section: Developments At Lhcbsupporting

confidence: 75%

Phenomenological and Experimental Developments in Charm Physics: The WG7 Report from CKM 2016

Casarosa¹,

Canto²,

Paul³

2017

Preprint

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show abstract

“…With a total of about 1.1×10 6 (6.6×10 6 ) signal candidates selected for the D + (s) mode, the obtained results are [29] A where the uncertainties represent the statistical and systematic components and the limited precision of the CP asymmetries of the control channels, which are external inputs [30,31]. These values are consistent with CP conservation and improve significantly over the previously best existing measurements performed with data from e + e − collisions [32,33]. The results show that LHCb can significantly contribute to investigating decays with neutral particles in the final state too.…”

Section: Pos(ckm2016)020supporting

confidence: 74%

Phenomenological and Experimental Developments in Charm Physics: The WG7 Report from CKM 2016

Casarosa¹,

Canto²,

Paul³

2017

Proceedings of 9th International Workshop on the CKM Unitarity Triangle — PoS(CKM2016)

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“…(5.3) at Belle II with 50 ab −1 of data. Reference [44] reports that with 791 fb −1 of data at Belle, statistical uncertainty of the CP asymmetry in the number of reconstructed events (N rec (D → f ) − N rec (D →f ))/(N rec (D → f ) + N rec (D →f )) is 1.13% for D + → π + η and 1.12% for D + → π + η . Assuming that the signal efficiencies (1.6%-1.7%) are the same for D + → π + η( ) and D + s → π + η( ), and using the branching ratios found in ref.…”

Section: Jhep10(2018)006mentioning

confidence: 99%

Direct CP violation in Cabibbo-favored charmed meson decays and ϵ′/ϵ in SU(2)L × SU(2)R × U(1)B−L model

Haba

Umeeda

Yamada

2018

J. High Energ. Phys.

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Since the standard model contribution is virtually absent, any observation of direct CP violation in the Cabibbo-favored charmed meson decays would be evidence of new physics. In this paper, we conduct a quantitative study on direct CP violation in D 0 → K − π + , D + s → ηπ + and D + s → η π + decays in the SU(2) L ×SU(2) R ×U(1) B−L gauge extension of the standard model. In the model, direct CP violation arises mainly from the interference between the decay amplitude coming from the SM left-left current operators and that from the right-right current operators induced by W + R gauge boson exchange. Interestingly, the strong phase between the two amplitudes is evaluable, since it stems from difference in QCD corrections to the left-left and right-right current operators, which is a short-distance QCD effect given by ∼ (α s (M 2 W L )/4π) log(M 2 W R /M 2 W L ). We assess the maximal direct CP violation in the above decays in the SU(2) L ×SU(2) R ×U(1) B−L model. Additionally, we present a correlation between direct CP violation in these modes and one in K → ππ decay parametrized by , since W + R gauge boson has a sizable impact on the latter.

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Observation ofD+→K+η(′)and Search forCP

Cited by 15 publications

References 16 publications

Phenomenological and Experimental Developments in Charm Physics: The WG7 Report from CKM 2016

Phenomenological and Experimental Developments in Charm Physics: The WG7 Report from CKM 2016

Phenomenological and Experimental Developments in Charm Physics: The WG7 Report from CKM 2016

Direct CP violation in Cabibbo-favored charmed meson decays and ϵ′/ϵ in SU(2)L × SU(2)R × U(1)B−L model

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