Related papers: CP Violating Asymmetries Induced by Supersymmetry

CP violation in $D^0 \to (K^- K^+, \pi^- \pi^+)$ from diquarks

The explanation of the large CP asymmetries in $D^0\to (\pi^+\pi^-, K^+K^-)$ decays observed by the LHCb collaboration is likely to call for new physics beyond the CKM paradigm. We explore new contributions caused by the color-sextet scalar…

High Energy Physics - Phenomenology · Physics 2012-04-20 Chuan-Hung Chen , Chao-Qiang Geng , Wei Wang

CP Violation in the Minimal Supersymmetric Seesaw Model

We study CP violation in the lepton sector of the supersymmetric extension of the Standard Model with three generations of massive singlet neutrinos with Yukawa couplings $Y_\nu$ to lepton doublets, in a minimal seesaw model for light…

High Energy Physics - Phenomenology · Physics 2008-11-26 John Ellis , Junji Hisano , Smaragda Lola , Martti Raidal

CP Violation in the Decay $b\rightarrow s\gamma$ in the Two-Higgs Doublet Model

In the most general two-Higgs doublet model with an approximate family symmetry and CP violation being originated solely from the relative phase of two vacuum expectation values, CP asymmetry in the decay $b\rightarrow s\gamma$ may arise…

High Energy Physics - Phenomenology · Physics 2010-11-01 Lincoln Wolfenstein , Yue-Liang Wu

Mixing-induced CP Asymmetries in Inclusive $B$ Decays

We consider CP violating asymmetries that are induced by particle-antiparticle mixing in inclusive channels of neutral $B$ meson decay. Not only are the branching ratios sizable, at the 1% to 50% level, but some of those asymmetries are…

High Energy Physics - Phenomenology · Physics 2016-09-06 Martin Beneke , Gerhard Buchalla , Isard Dunietz

Branching Ratio and CP Asymmetry of $B_{s} \to \rho(\omega) K $ Decays in the Perturbative QCD Approach

In this paper, we calculate the branching ratios and CP-violating asymmetries for $B_{s}\to \rho^\pm K^\mp$, $B_{s}\to\rho^{0}\bar{K}^0 $ and $B_{s}\to\omega\bar{K}^0$ decays in the perturbative QCD (pQCD) factorization approach. The…

High Energy Physics - Phenomenology · Physics 2008-11-26 Zhen-jun Xiao , Xin-fen Chen , Dong-qin Guo

CP Asymmetries in Radiative B Decays with R-parity Violation

We analyze the effect of R-parity violation in the minimal supersymmetric standard model on the CP asymmetries in $b\to s \gamma$ decay. The direct and mixing-induced CP asymmetries arising from the lepton number violating couplings are…

High Energy Physics - Phenomenology · Physics 2009-10-31 Eung Jin Chun , Kyuwan Hwang , Jae Sik Lee

Implications of baryon asymmetry for the electric dipole moment of the neutron

We study baryogenesis at the electroweak phase transition of the universe within the framework of the supersymmetric standard model (SSM) based on N=1 supergravity. This model contains a new source of CP violation in the mass-squared…

High Energy Physics - Phenomenology · Physics 2009-10-30 Mayumi Aoki , Akio Sugamoto , Noriyuki Oshimo

Momentum reconstruction at the LHC for probing CP-violation in the stop sector

We study the potential to observe CP-violating effects in SUSY stop cascade decay chains at the LHC. Asymmetries composed by triple products of momenta of the final state particles are sensitive to CP-violating effects. Due to large boosts…

High Energy Physics - Phenomenology · Physics 2011-07-22 Gudrid Moortgat-Pick , Krzysztof Rolbiecki , Jamie Tattersall

Investigation of the $\Delta I = 1/2$ rule and test of CP violation through the measurement of decay asymmetry parameters in $\Xi^-$ decays

Using $(10087\pm44)\times 10^{6}$ $J/\psi$ events collected with the BESIII detector, numerous $\Xi^-$ and $\Lambda$ decay asymmetry parameters are simultaneously determined from the process $J/\psi \to \Xi^- \bar{\Xi}^+ \to \Lambda(p\pi^-)…

High Energy Physics - Experiment · Physics 2024-01-10 BESIII Collaboration , M. Ablikim , M. N. Achasov , P. Adlarson , X. C. Ai , R. Aliberti , A. Amoroso , M. R. An , Q. An , Y. Bai , O. Bakina , I. Balossino , Y. Ban , V. Batozskaya , K. Begzsuren , N. Berger , M. Berlowski , M. Bertani , D. Bettoni , F. Bianchi , E. Bianco , A. Bortone , I. Boyko , R. A. Briere , A. Brueggemann , H. Cai , X. Cai , A. Calcaterra , G. F. Cao , N. Cao , S. A. Cetin , J. F. Chang , T. T. Chang , W. L. Chang , G. R. Che , G. Chelkov , C. Chen , Chao Chen , G. Chen , H. S. Chen , M. L. Chen , S. J. Chen , S. L. Chen , S. M. Chen , T. Chen , X. R. Chen , X. T. Chen , Y. B. Chen , Y. Q. Chen , Z. J. Chen , W. S. Cheng , S. K. Choi , X. Chu , G. Cibinetto , S. C. Coen , F. Cossio , J. J. Cui , H. L. Dai , J. P. Dai , A. Dbeyssi , R. E. de Boer , D. Dedovich , Z. Y. Deng , A. Denig , I. Denysenko , M. Destefanis , F. De Mori , B. Ding , X. X. Ding , Y. Ding , Y. Ding , J. Dong , L. Y. Dong , M. Y. Dong , X. Dong , M. C. Du , S. X. Du , Z. H. Duan , P. Egorov , Y. H. Fan , J. Fang , S. S. Fang , W. X. Fang , Y. Fang , R. Farinelli , L. Fava , F. Feldbauer , G. Felici , C. Q. Feng , J. H. Feng , K Fischer , M. Fritsch , C. D. Fu , J. L. Fu , Y. W. Fu , H. Gao , Y. N. Gao , Yang Gao , S. Garbolino , I. Garzia , P. T. Ge , Z. W. Ge , C. Geng , E. M. Gersabeck , A Gilman , K. Goetzen , L. Gong , W. X. Gong , W. Gradl , S. Gramigna , M. Greco , M. H. Gu , Y. T. Gu , C. Y Guan , Z. L. Guan , A. Q. Guo , L. B. Guo , M. J. Guo , R. P. Guo , Y. P. Guo , A. Guskov , T. T. Han , W. Y. Han , X. Q. Hao , F. A. Harris , K. K. He , K. L. He , F. H H. Heinsius , C. H. Heinz , Y. K. Heng , C. Herold , T. Holtmann , P. C. Hong , G. Y. Hou , X. T. Hou , Y. R. Hou , Z. L. Hou , H. M. Hu , J. F. Hu , T. Hu , Y. Hu , G. S. Huang , K. X. Huang , L. Q. Huang , X. T. Huang , Y. P. Huang , T. Hussain , N Hüsken , N. in der Wiesche , M. Irshad , J. Jackson , S. Jaeger , S. Janchiv , J. H. Jeong , Q. Ji , Q. P. 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CP violation in charged Higgs boson decays into tau and neutrino

We calculate the CP-violating rate asymmetry of H^\pm decays into tau and neutrino at one loop in the MSSM with complex parameters. We find that the asymmetry is typically of the order of 10^-3, depending mainly on the phases of the…

High Energy Physics - Phenomenology · Physics 2009-11-07 E. Christova , H. Eberl , S. Kraml , W. Majerotto

Semileptonic B decay as a test of CKM unitarity

I point out that $B \to X_q \l^+ \l^-$ decays $(q = s, d)$ are sensitive probes of possible violation of CKM unitarity. I compute the decay rates and asymmetries in a minimal extension of the Standard Model containing an additional…

High Energy Physics - Phenomenology · Physics 2022-03-02 L. T. Handoko

Theory of CP Violation

CP violation in K and B decays is reviewed in the Standard Model (SM) and beyond the SM. In K decays, one is seeking first evidence for CP violation in direct $K\to \pi\pi$ decays. This would not give a precise quantitative test for the…

High Energy Physics - Phenomenology · Physics 2014-11-17 Michael Gronau

CP asymmetries in the supersymmetric trilepton signal at the LHC

In the CP-violating Minimal Supersymmetric Standard Model, we study the production of a neutralino-chargino pair at the LHC. For their decays into three leptons, we analyze CP asymmetries which are sensitive to the CP phases of the…

High Energy Physics - Phenomenology · Physics 2012-03-09 S. Bornhauser , M. Drees , H. Dreiner , O. J. P. Eboli , J. S. Kim , O. Kittel

Exploring the CP-violating NMSSM: EDM Constraints and Phenomenology

The Next-to-Minimal Supersymmetric extension of the Standard Model (NMSSM) features extra new sources for CP violation. In contrast to the MSSM CP violation can already occur at tree level in the Higgs sector. We investigate the range of…

High Energy Physics - Phenomenology · Physics 2015-12-09 S. F. King , M. Muhlleitner , R. Nevzorov , K. Walz

Branching Ratio and CP Asymmetry of B_s \to K^*_0(1430)\rho(\omega,\phi) Decays in the PQCD Approach

In the two-quark model supposition for $K_0^{*}(1430)$, which can be viewed as either the first excited state (scenario I) or the lowest lying state (scenario II), the branching ratios and the direct CP-violating asymmetries for decays…

High Energy Physics - Phenomenology · Physics 2011-06-07 Zhi-Qing Zhang

Testing the Non-universal Z^\prime Model in Bs -> \phi \pi^0 Decay

The branching ratio and direct CP asymmetry of the decay mode $B_s \to \phi \pi^0$ have been calculated within the QCD factorization approach in both the standard model (SM) and the non-universal $Z^\prime$ model. In the standard model, the…

High Energy Physics - Phenomenology · Physics 2014-11-20 Juan Hua , C. s Kim , Ying Li

Spontaneous Violation of the CP Symmetry in the Higgs Sector of the Next-to-Minimal Supersymmetric Model

The spontaneous violation of the CP symmetry in the next-to-minimal supersymmetric standard Model (NMSSM) is investigated. It is found that the spontaneous violation of the CP symmetry can occur in the Higgs sector of the NMSSM for a wide…

High Energy Physics - Phenomenology · Physics 2014-11-17 S. W. Ham , S. K. OH , H. S. Song

$\rm{SU}(3)_F$ sum rules for CP asymmetry of $D_{(s)}$ decays

Charge-parity (CP) asymmetries in charm decays are extremely suppressed in the Standard Model and may well be dominated by new physics contributions. The LHCb collaboration reported the results of direct CP asymmetry measurements in $D^0\to…

High Energy Physics - Phenomenology · Physics 2025-02-19 Syuhei Iguro , Ulrich Nierste , Emil Overduin , Maurice Schüßler

CP Violation in K-Meson Decays

This is a pedagogical review of some selected topics of CP and T violation in the decays of K mesons. Diagonalization of the quark mass matrix and the emergence of the complex phase in both the standard and the left--right symmetric models…

High Energy Physics - Phenomenology · Physics 2007-05-23 R. N. Rogalyov

Effects of R-parity violation on CP asymmetries in $\Lambda_b \to p \pi$ decay

We have studied new CP violating effects in $\Lambda_b \to p \pi$ decay mode, that can arise in Minimal Supersymmetric Standard Model with R-parity violation. We have estimated how much R-parity violation modifies the Standard Model…

High Energy Physics - Phenomenology · Physics 2011-03-23 R. Mohanta