Search For Cp Violation In D Meson Decays
Download Search For Cp Violation In D Meson Decays full books in PDF, epub, and Kindle. Read online free Search For Cp Violation In D Meson Decays ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author | : Gay Bernadette Stewart |
Publisher | : |
Total Pages | : 268 |
Release | : 1994 |
Genre | : |
ISBN | : |
Using data from the Mark III detector at the $esp+esp-$ storage ring at SPEAR, an upper limit of.30 at the 90% confidence level is set on the magnitude of the CP asymmetry $Asb{cp}$ for the CP eigenstate $Dsp0to Ksp+Ksp-.$ This falls within the preexisting limit of.45 @ 90% CL set by FNAL experiment E687 using the same decay. The first measurement of $Asb{cp}$ is made for two other CP eigenstates, $Dsp0to Ksbsp{s}{0}Ksbsp{s}{0}$ and $Dsp0to pisp+pisp-.$ An upper limit for the branching ratio for the decay, $Dsp0to Ksp-pisp+pisp0pisp0pisp0,$ for which evidence was found in the process of measuring $Asb{cp},$ is set at 12.1%.
Author | : Francisco Xavier Yumiceva |
Publisher | : |
Total Pages | : 199 |
Release | : 2004 |
Genre | : CP violation (Nuclear physics) |
ISBN | : |
Author | : Angelo Di Canto |
Publisher | : LAP Lambert Academic Publishing |
Total Pages | : 160 |
Release | : 2012-04 |
Genre | : |
ISBN | : 9783848437191 |
The phenomenology of the violation of the CP symmetry by the fundamental interactions is a fascinating subject which, even after decades of dedicated theoretical and experimental research, is far to be fully understood. While investigations of the K and B systems have and will continue to play a central role in this field of research, in depth examinations of the D mesons sector have yet to be performed with enough precision, leaving a gap in our knowledge. This book describes a search for CP violation in Cabibbo-suppressed neutral D decays to two charged pions or kaons performed using the proton-antiproton collisions recorded at the Fermilab's TeVatron collider by the CDF experiment during February 2002 and January 2010. The result is the current most accurate determination of CP-violating asymmetries in these decays and represents a pioneering measurement of high precision CP violation in the charm sector at hadron colliders that has been of inspiration for the similar studies which are now ongoing at the CERN's Large Hadron Collider.
Author | : Hamish Gordon |
Publisher | : Springer |
Total Pages | : 167 |
Release | : 2014-06-07 |
Genre | : Science |
ISBN | : 3319070673 |
Our current understanding of the fundamental building blocks of the Universe, summarised by the Standard Model of particle physics, is incomplete. For example, it fails to explain why we do not see equal, or almost equal, numbers of particles and their antiparticle partners. To explain this asymmetry requires, among other effects, a mechanism known as charge-parity (CP) violation that causes differences between the rates at which particles and antiparticles decay. CP violation is seen in systems containing bottom and strange quarks, but not in those with up, charm or top quarks. This thesis describes searches for particle-antiparticle asymmetries in the decay rates of charmed mesons. No evidence of CP violation is found. With current sensitivities, an asymmetry large enough to observe probably could not be explained by the Standard Model. Instead an explanation could come from new physics, for example contributions from supersymmetric or other undiscovered heavy particles. In the thesis, the development of new techniques to search for these asymmetries is described. They are applied to data from the LHCb experiment at CERN to make precise measurements of asymmetries in the D^+->K^-K^+pi^+ decay channel. This is the most promising charged D decay for CP violation searches.
Author | : Brendan Casey |
Publisher | : |
Total Pages | : 204 |
Release | : 2001 |
Genre | : CP violation (Nuclear physics) |
ISBN | : |
Author | : I. I. Bigi |
Publisher | : Cambridge University Press |
Total Pages | : 408 |
Release | : 2000 |
Genre | : Science |
ISBN | : 9780521443494 |
This account presents background information and theoretical tools necessary for understanding CP violation.
Author | : Michael Prim |
Publisher | : Springer Science & Business Media |
Total Pages | : 111 |
Release | : 2014-03-28 |
Genre | : Science |
ISBN | : 3319057561 |
This thesis describes the thorough analysis of the rare B meson decay into φ K* on data taken by the Belle Collaboration at the B-meson-factory KEKB over 10 years. This reaction is very interesting, because it in principle allows the observation of CP-violation effects. In the Standard Model however, no CP violation in this reaction is expected. An observation of CP asymmetries thus immediately implies new physics. This thesis presents an amplitude analysis of this decay and the search for CP violation in detail and discusses methods to solve related problems: The quantification of multivariate dependence and the improvement of numeric evaluation speed of normalization integrals in amplitude analysis. In addition it provides an overview of the theory, experimental setup, (blind) statistical data analysis and estimation of systematic uncertainties.
Author | : Markus Röhrken |
Publisher | : Springer Science & Business Media |
Total Pages | : 205 |
Release | : 2013-10-17 |
Genre | : Science |
ISBN | : 3319007262 |
This thesis describes a high-quality, high-precision method for the data analysis of an interesting elementary particle reaction. The data was collected at the Japanese B-meson factory KEKB with the Belle detector, one of the most successful large-scale experiments worldwide. CP violation is a subtle quantum effect that makes the world look different when simultaneously left and right and matter and antimatter are exchanged. This being a prerequisite for our own world to have developed from the big bang, there are only a few experimental indications of such effects, and their detection requires very intricate techniques. The discovery of CP violation in B meson decays garnered Kobayashi and Maskawa, who had predicted these findings as early as 1973, the 2008 Nobel prize in physics. This thesis describes in great detail what are by far the best measurements of branching ratios and CP violation parameters in two special reactions with two charm mesons in the final state. It presents an in-depth but accessible overview of the theory, phenomenology, experimental setup, data collection, Monte Carlo simulations, (blind) statistical data analysis, and systematic uncertainty studies.
Author | : Sheldon Stone |
Publisher | : World Scientific |
Total Pages | : 676 |
Release | : 1994 |
Genre | : Science |
ISBN | : 9789810218362 |
This 2nd edition is an extensive update of "B Decays?. The revisions are necessary because of the extensive amount of new data and new theoretical ideas. This book reviews what is known about b-quark decays and also looks at what can be learned in the future.The importance of this research area is increasing, as evidenced by the approval of the luminosity upgrade for CESR and the asymmetric B factories at SLAC and KEK, and the possibility of experiments at hadron colliders.The key experimental observations made thus far, measurement of the lifetimes of the different B species, B0-B0 mixing, the discovery of ?Penguin? mediated decays, and the extraction of the CKM matrix elements Vub and Vcb from semileptonic decays, as well as more mundane results, are described in great detail by the experimentalists who have been closely involved with making the measurements. Theoretical progress in understanding b-quark decays using HQET and lattice gauge techniques are described by theorists who have developed and used these techniques.Synthesizing the experimental and theoretical information, several articles discuss the implications for the ?Standard Model? and how further tests can be done using measurements of CP violation in the B system.
Author | : T. M. Aliev |
Publisher | : |
Total Pages | : |
Release | : 1990 |
Genre | : |
ISBN | : |