English
Related papers

Related papers: CP Violation in $Lambda \to p \pi^-$ Beyond the St…

200 papers

CP violation from physics beyond the Standard Model is investigated in $B_{l4}$ decays: $B\to D\pi l\bar{\nu}_l$. The semileptonic $B$-meson decay to a $D$-meson with an emission of single pion is analyzed with heavy quark effective theory…

High Energy Physics - Phenomenology · Physics 2009-10-31 C. S. Kim , Jake Lee , W. Namgung

We observe evidence for CP violation in the decay $D^+\rightarrow K^0_S\pi^+$ using a data sample with an integrated luminosity of 977 fb$^{-1}$ collected by the Belle detector at the KEKB $e^+e^-$ asymmetric-energy collider. The CP…

High Energy Physics - Experiment · Physics 2019-08-14 B. R. Ko , E. Won , I. Adachi , H. Aihara , D. M. Asner , V. Aulchenko , T. Aushev , T. Aziz , A. M. Bakich , K. Belous , V. Bhardwaj , B. Bhuyan , M. Bischofberger , A. Bondar , G. Bonvicini , A. Bozek , M. Bra\v , T. E. Browder , M. -C. Chang , A. Chen , P. Chen , B. G. Cheon , K. Chilikin , I. -S. Cho , K. Cho , Y. Choi , Z. Dole\v , Z. Drásal , S. Eidelman , J. E. Fast , V. Gaur , N. Gabyshev , Y. M. Goh , B. Golob , J. Haba , K. Hayasaka , H. Hayashii , Y. Horii , Y. Hoshi , W. -S. Hou , H. J. Hyun , T. Iijima , A. Ishikawa , R. Itoh , M. Iwabuchi , Y. Iwasaki , T. Iwashita , T. Julius , J. H. Kang , T. Kawasaki , C. Kiesling , H. O. Kim , J. B. Kim , K. T. Kim , M. J. Kim , Y. J. Kim , K. Kinoshita , S. Koblitz , P. Kody\v , S. Korpar , P. Kri\v , P. Krokovny , T. Kuhr , A. Kuzmin , Y. -J. Kwon , J. S. Lange , S. -H. Lee , J. Li , Y. Li , J. Libby , C. -L. Lim , C. Liu , Y. Liu , Z. Q. Liu , D. Liventsev , R. Louvot , Y. Miyazaki , R. Mizuk , G. B. Mohanty , A. Moll , T. Mori , N. Muramatsu , Y. Nagasaka , E. Nakano , M. Nakao , H. Nakazawa , Z. Natkaniec , S. Nishida , K. Nishimura , O. Nitoh , S. Ogawa , T. Ohshima , S. Okuno , S. L. Olsen , Y. Onuki , W. Ostrowicz , P. Pakhlov , G. Pakhlova , C. W. Park , H. K. Park , K. S. Park , T. K. Pedlar , R. Pestotnik , M. Petri\v , L. E. Piilonen , A. Poluektov , M. Ritter , M. Röhrken , S. Ryu , H. Sahoo , K. Sakai , Y. Sakai , T. Sanuki , Y. Sato , O. Schneider , C. Schwanda , A. J. Schwartz , R. Seidl , K. Senyo , M. E. Sevior , M. Shapkin , C. P. Shen , T. -A. Shibata , J. -G. Shiu , B. Shwartz , A. Sibidanov , F. Simon , P. Smerkol , Y. -S. Sohn , A. Sokolov , E. Solovieva , S. Stani\v , M. Stari\v , T. Sumiyoshi , S. Tanaka , G. Tatishvili , Y. Teramoto , K. Trabelsi , T. Tsuboyama , M. Uchida , S. Uehara , Y. Unno , S. Uno , G. Varner , K. E. Varvell , A. Vinokurova , V. Vorobyev , C. H. Wang , P. Wang , X. L. Wang , M. Watanabe , Y. Watanabe , H. Yamamoto , Y. Yamashita , C. Z. Yuan , C. C. Zhang , Z. P. Zhang , V. Zhulanov , A. Zupanc

CP violation in rare leptonic B decays are analyzed in the standard model (SM) and models beyond SM (supersymmetric models and two Higgs doublet models).

High Energy Physics - Phenomenology · Physics 2007-05-23 Chao-Shang Huang , Wei Liao

This review of CP violation focuses on the status of the subject and its likely future development through experiments in the Kaon system and with B-decays. Although present observations of CP violation are perfectly consistent with the CKM…

High Energy Physics - Phenomenology · Physics 2009-09-25 R. D. Peccei

Recent developments concerning CP violation beyond the Standard Model are reviewed. The central target of this presentation is the $B$ system, as it plays an outstanding role in the extraction of CKM phases. Besides a general discussion of…

High Energy Physics - Phenomenology · Physics 2007-05-23 Robert Fleischer

We present a novel method to search for a new CP-violating phase in b -> ss~ss~s transition using B -> phi phi Xs decays, where Xs represents a final state with a specific strange flavor such as K+/-, K*+/-, or K+/-pi-/+. Direct CP…

High Energy Physics - Phenomenology · Physics 2009-11-10 Masashi Hazumi

We study the potential observation at the LHC of CP-violating effects in stop production and subsequent cascade decays, g g -> tilde{t}_i tilde{t}_i, tilde{t}_i -> t tilde{chi}^0_j, tilde{chi}^0_j -> tilde{\chi}^0_1 l^+ l^-, within the…

High Energy Physics - Phenomenology · Physics 2009-04-24 J. Ellis , F. Moortgat , G. Moortgat-Pick , J. M. Smillie , J. Tattersall

We review the present status of the Standard Model of CP violation, which is based on a complex phase in the Cabibbo-Kobayashi- Maskawa (CKM) matrix. So far CP violation has been observed only in $K^0-\Kbar$ mixing, consistent with a…

High Energy Physics - Phenomenology · Physics 2010-11-01 Michael Gronau

The recently measured direct CP asymmetries in the processes $D^0\to \pi^+\pi^-$ and $D^0\to K^+K^-$ show a significant deviation from the naive Standard Model expectation. Using a general parameterization of the decay amplitudes, we show…

High Energy Physics - Phenomenology · Physics 2015-06-04 Enrico Franco , Satoshi Mishima , Luca Silvestrini

We have measured the CP asymmetry A_CP = [BF(b -> s gamma) - BF(bbar -> sbar gamma)]/ [BF(b -> s gamma) + BF(bbar -> sbar gamma)] to be A_CP = (-0.079 +/- 0.108 +/- 0.022)(1.0 +/- 0.030), implying that, at 90% confidence level, A_CP lies…

High Energy Physics - Experiment · Physics 2010-04-08 CLEO Collaboration , T. E. Coan

We report observations of CP violation in the decays B0 -> K+pi- and B0 -> pi+pi- in a sample of 383 million Y(4S) -> BBbar events. We find 4372 +/- 82 B0 -> K+pi- decays and measure the direct CP-violating charge asymmetry Akpi = -0.107…

High Energy Physics - Experiment · Physics 2019-08-14 B. Aubert

There has been a lot of recent interest in the experimental hints of CP violation in B_{d,s}^0 mixing, which would be a clear signal of beyond the standard model physics (with higher significance). We derive a new relation for the mixing…

High Energy Physics - Phenomenology · Physics 2013-05-30 Marat Freytsis , Zoltan Ligeti , Sascha Turczyk

We present results on CP violation from approximately 2.8 fb^{-1} of data collected by the D0 Experiment at the Fermilab Tevatron. The results presented are: (i) an improved measurement of the B_s^0 CP-violating phase from a flavor-tagged…

High Energy Physics - Experiment · Physics 2008-10-07 J. Ellison

We study the sensitivity of a 500 GeV $e^+e^-$ Linear Collider to $CP$ violating anomalous couplings. We find that with 50~fb$^{-1}$, and taking only one non-zero coupling at a time, the process $e^+e^-\to W^+ W^-$ can be used to place the…

High Energy Physics - Phenomenology · Physics 2016-08-25 A. A. Likhoded , G. Valencia , O. P. Yushchenko

The measurement of CP asymmetries in charged B meson decays might provide the first demonstration of CP violation outside the K system. Among the usual three CP-odd phases $\alpha$, $\beta$ and $\gamma$, the phase $\gamma$ seems to be the…

High Energy Physics - Phenomenology · Physics 2009-10-31 T. N. Pham

We search for CP violation in a sample of 20000 Cabibbo-suppressed decays, $D^+\rightarrow K^+K^0_S\pi^+\pi^-$, and 30000 Cabibbo-favored decays, $D_s^+\rightarrow K^+K^0_S\pi^+\pi^-$. We use 520 $fb^{-1}$ of data recorded by the BaBar…

High Energy Physics - Experiment · Physics 2015-03-19 The BABAR Collaboration , J. P. Lees

We search and find no evidence for CP violation in tau decays into the K pi nu final state. We provide confidence limits on the imaginary part of the coupling constant Lambda, describing a relative contribution of the CP violating processes…

High Energy Physics - Experiment · Physics 2010-04-08 G. Bonvicini , CLEO Collaboration

We measure CP-violating asymmetries of neutral charmed mesons in the modes D0 --> K- K+ and D0 --> pi- pi+ with the highest precision to date by using D0 --> K- pi+ decays to correct detector asymmetries. An analysis of 385.8 fb-1 of data…

High Energy Physics - Experiment · Physics 2010-04-12 The BaBar Collaboration , B. Aubert

We consider the decay B0(t) -> hyperon + antihyperon, followed by hyperon weak decay. We show that parity violation in the latter allows to reach new CP observables: not only Im(lambda_f) but also Re(lambda_f) can be measured. In the decay…

High Energy Physics - Phenomenology · Physics 2009-10-31 J. Charles , A. Le Yaouanc , L. Oliver , O. Pène , J. -C. Raynal

It is shown that in R-parity violating models of supersymmetry, the CP violation observed in the kaon system could arise purely from the R-parity violating scalar interactions (A-terms), with no CP violation in the CKM matrix. The direct CP…

High Energy Physics - Phenomenology · Physics 2009-10-30 S. A. Abel