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Showing 1 to 20 of 67 for “"CP-violation"”.
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CP violation in the grimus-neufeld model /
… This is closely related to the topic of CP violation, which refers to the phenomenon when the same processes treat matter and antimatter particles differently. Searching for the sources of CP violation inevitably leads to expansions of the Standard Model by new particles and interactions. …
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CP-Violation and Baryogenesis on Electroweak Scales
In this work we study different aspects of CP-violation on electroweak scales and in this context quantum transport in electroweak baryogenesis. First we focus on CP-violation of CKM type as it is present in the Standard Model. We explain basic concepts and the reason for the smallness of …
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Study of CP-violation at the Belle experiment
We present a first measurement of time-dependent CP-violation in B0 → D∗∓ ρ± , where D∗∓ → D0 π. The analysis was performed using the final Belle dataset containing 772 × 106 B ¯B pairs collected at the KEKB e+ e− collider. Three D0 decay modes are analyzed, K∓ π± , K∓ π± π0 , and K∓ π± π∓ π± . …
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CP-violation in cascade decays at the LHC
We study the potential to observe CP-violating effects in various supersymmetric cascade decay chains at the LHC. Asymmetries composed by triple products of momenta of the final state particles are sensitive to CP-violating effects. We analytically calculate the cascade decays including the …
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Search for CP violation in D-meson decays
… confidence level is set on the magnitude of the CP asymmetry $A\sb{cp}$ for the CP eigenstate $D\sp0\to K\sp+K\sp-.$ This falls within the preexisting limit of.45 @ 90% CL set by FNAL experiment E687 using the same decay. The first measurement of $A\sb{cp}$ is made for two other CP eigenstates, …
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Search for CP violation in D-meson decays
… confidence level is set on the magnitude of the CP asymmetry Acp for the CP eigenstate no -+ K+ K-. This falls within the preexisting limit of .45 @90% CL set by FNAL experiment E691 using the same decay. The first measurement of Acp is made for two other CP eigenstates, no -+ K2 K2 and no -+ …
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CP violation in production and decay of supersymmetric particles
In dieser Dissertation untersuchen wir CP verletzende Effekte von MSSM-Phasen in Produktion und Zwei-Teilchen-Zerfaellen von Neutralinos, Charginos und Sfermionen. Fuer verschiedene supersymmetrische Prozesse definieren und berechnen wir CP-ungerade Asymmetrien, welche auf Spatprodukten basieren. …
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Spontaneous CP-Violation in Two Higgs Doublet Supersymmetric Models
An alternative approach to the problem of CP-violation is presented. It is based on the possibility of spontaneous CP-breakdown in models with two Higgs doublets. General features of the phenomenon such as stability of the vacuum and the existence of a light axion are discussed. We investigate the …
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Search For Cp Violation In Singly Cabibbo-Suppressed Charm Decays
<p>CP violation in singly Cabibbo-Suppressed (SCS) weak decays of charged D mesons is predicted in the Standard Model (SM) to have asymmetries on the order of $10^{-3}$. $CP$ violation has not yet been observed in the Charm sector; however, the BaBar experiment now has extremely large data samples …
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CP violation in flavor-tagged Bs̳ --> J/[psi][phi] decays
… with the use of initial-state flavor tagging. CP violation is observed in this mode through the interference of decay without net mixing and decay with net mixing, that is, Bs -- J/0 and Bs -+ B, -+ J/q0. The time-dependent angular analysis is used to extract the decay widths of the heavy and …
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A trigger study of CP-violation and lifetimes in Bs → J/ψφ decays in ATLAS
The CP-violating phase φ_s is measured in B_s → J/ψφ decays, using data from the 2010 to 2012 run periods of the ATLAS detector at the LHC at CERN. This measurement potentially provides a means to falsifying the standard model, known to provide insufficient levels of CP-violation to account for the …
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Kaon to two pions decays from lattice QCD: ΔI=1/2 rule and CP violation
… understanding and testing the standard model of CP violation in the kaon system. The final result for the measure of direct CP violation, ε′, calculated at unphysical kinematics has an order of 100% statistical error, so this only serves as an order of magnitude check.
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Limiting CP violation through a search for a permanent electric dipole moment of mercury 199 atoms
… an atom or particle would reveal a new source of CP violation beyond the Standard Model. The first measurement of the 199Hg EDM using a UV laser to optically pump and probe a stack of two 199 Hg vapor cells has been completed yielding the result, d( 199Hg) = -(1.06 +/- 0.49stat. +/- 0.40 syst.) x …
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A comparison of CP violation in the decays K0 → π+ π- and K-0 → π+ π-
… test the validity of current formulations of OP violations. An enriched kaon beam at Argonne National Laboratory was used to produce KO (ft) by charge exchange of 850 MeV/c K+ (K-) on complex nuclei. Magnetostrictive wire spark chambers and scintillation counters were used to measure the n+n- …
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A Comparison of Cp-Violation in the Decays, Neutral Kaon Going to ((+)pion,(-)pion) and Neutral Antikaon Going to ((+)pion,(-)pion
Made available in DSpace on 2015-05-12T22:38:55Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7317376.PDF: 2685633 bytes, checksum: 3791be38d113f27040da4a53026752ef (MD5) Previous issue date: 1972
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Measurement of the Branching Fraction and Search for Direct CP-Violation in the Radiative Decay B to K*Gamma with the BABAR Detector
… gemessen. Eine Suche nach direkter CP-Verletzung im B->K*Gamma Kanal wurde ebenfalls durchgeführt.
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A Search for CP Violation in and a Dalitz Analysis of Neutral D Mesons Decaying to Pions, Antipions, and Neutral Pions in CLEO II.V
… sigma(500) or any other resonance was found. ACP has been measured as 0.01+0.09-0.07 +/- 0.09.
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A search for CP violation in and a Dalitz analysis of neutral D mesons decaying to pions, antipions, and neutral pions in CLEO II.V
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-26T22:56:52Z No. of bitstreams: 1 Plager.pdf: 17514166 bytes, checksum: 27b1713aca77a4cc45067c9293b881ef (MD5)
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Phenomenological Consequences of Heavy Right Handed Neutrinos
… provides the possibility of a non vanishing CP violating phase in the neutrino mixing matrix. CP violation in the leptonic sector can be large enough to explain the matter-antimatter asymmetry in the universe. An indirect probe of CP violation is the experimental measurement of Electric …
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MEASUREMENT OF THE CKM ANGLE Gamma WITH THE Lambda_b0--> D0pK. DECAY AND COMMISSIONING OF THE UPSTREAM TRACKER AT THE LHCB EXPERIMENT.
Charge Parity (CP) violation is a well-documented phenomenon described by the Standard Model (SM) of particle physics. Understanding CP violation can explain why matter prevailed over antimatter after the Big Bang, essentially explaining our existence. Many theoretical predictions have been …
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