Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 8
Book Description
Observation of D0-D0bar Mixing Using the CDF II Detector
Author: Analysis of $D^{0} - \bar{D}^0$ Mixing in $D^{0} - K\pi$ Decays Using the CDF II Detector
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 103
Book Description
We presented the first observation of D0-$\bar{D}$0 mixing in a single analysis. We measured the ratio of doubly Cabibbo suppressed or WS (D0 → K+[pi]-) decay rate to Cabibbo favored or RS (D0 → K-[pi]+) decay rate as a function of D0 decay time. We used an integrated luminosity of 4.0 fb-1 of proton anti-proton collisions at √s = 1.96 TeV at the collider detector at Fermilab (CDF II).
Evidence for $D0̂ - \bar{D}0̂$ Mixing Using the CDF II Detector
Author: D0 - D0bar Mixing
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Recently, the B factory experiments BABAR and Belle as well as the CDF collaboration found evidence for mixing in the D meson system. The current status (beginning of summer 2008) of the experimental results of D° mixing is summarized. In this paper, we present an overview of D° mixing. After an introduction to the charm mixing phenomenology and analysis techniques, results of the mixing parameters and CP violation as related to mixing are summarized. They are obtained from hadronic two-body, multi-body final states and from quantum correlated D° decays of the experiments BABAR, Belle, Cleo and CDF. Mixing results from semileptonic D° decays can be found elsewhere.
Measurement of D0-D0bar Mixing Using the Ratio of D0-]K-pi and K-K Lifetimes
![Measurement of D0-D0bar Mixing Using the Ratio of D0-]K-pi and K-K Lifetimes PDF](https://books.google.com/books/content/images/frontcover/N2jMwQEACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 8
Book Description
We measure the rate of D°-{bar D}° mixing with the observable y{sub CP} = (?{sub K?}/?{sub KK}) - 1, where?{sub KK} and?{sub K?} are respectively the mean lifetimes of CP-even D° → KK− and CP-mixed D° → K−?+ decays, using a data sample of 384 fb−1 collected by the BABAR detector at the SLAC PEP-II asymmetric-energy B Factory. From a sample of D° and {bar D}° decays where the initial flavor of the decaying meson is not determined, we obtain y{sub CP} = [1.12 ± 0.26(stat) ± 0.22(syst)]%, which excludes the no-mixing hypothesis at 3.3?, including both statistical and systematic uncertainties. This result is in good agreement with a previous BABAR measurement of y{sub CP} obtained from a sample of D*+ → D°?+ events, where the D° decays to K−?+, K+K−, and {pi}+{pi}−, which is disjoint with the untagged D° events used here. Combining the two results taking into account statistical and systematic uncertainties, where the systematic uncertainties are assumed to be 100% correlated, we find y{sub CP} = [1.16 ± 0.22(stat) ± 0.18(syst)]%, which excludes the no-mixing hypothesis at 4.1?
Measurement of D0-D0bar Mixing and CP Violation in Two-Body D0 Decays
Author: Search for D0D0̄ Mixing with the Babar Detector Using the Hadronic Decay D0 [yields] K [pi] and Measurement of the Doubly Cabibbo Suppressed Decay Rate of D0[yields] K+ [pi] ̄
![Search for D0D0̄ Mixing with the Babar Detector Using the Hadronic Decay D0 [yields] K [pi] and Measurement of the Doubly Cabibbo Suppressed Decay Rate of D0[yields] K+ [pi] ̄ PDF](https://books.google.com/books/content/images/frontcover/fBQxXc5U24QC?fife=w80-h100)
Author: Massimiliano TurriPublisher:
ISBN:
Category : Hadrons
Languages : en
Pages : 322
Book Description
Measurement of D0 - $\bar{D}$0 Mixing With a Time-Dependent Amplitude Analysis of D0 2!K+ [pi]- [pi]0
![Measurement of D0 - $\bar{D}$0 Mixing With a Time-Dependent Amplitude Analysis of D0 2!K+ [pi]- [pi]0 PDF](https://books.google.com/books/content/images/frontcover/FS6uAQAACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 216
Book Description
Flavor mixing of neutral mesons is a long and well known phenomenon in particle physics. Experimental evidence of mixing of the neutral kaon was obtained in 1956, followed in 1987 by the evidence of Bd mixing. In 1974, A. Pais and S.B. Treiman firstly introduced the idea of charm mixing and CP violation. Even though many searches were conducted over time, it was clear that the small scale at which both amplitude and frequency of the oscillation took place made any possible observation challenging. In 2007, both the BABAR and Belle experiments announced the first evidence of mixing in the charm sector. The analyses concerned the study of a two body decay of the D0 meson. Few months later, BABAR presented the analysis of the decay D0 2!K+[pi]-[pi]0 . This is the main topic of this thesis.
Search for D0-anti-D0 Mixing with the BaBar Experiment
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
The results of searches for D°-{bar D}° mixing in the decays D° → K?−?° and D° → K+?−?+?−, using 230 fb−1 of e+e− collisions collected from the BABAR detector at the PEP-II storage ring at SLAC, are presented. The combination of results from these analyses yields a value for the time-integrated mixing rate R{sub M} = (0.020{sub -0.010}{sup +0.011}(stat.))%, and an upper limit R{sub M}
Search for D0 - D0bar Mixing and Rare Charm Decays
Author: U. EgedePublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Based on a dataset acquired by the BABAR experiment running on and near the {Upsilon}(4S) resonance from 1999-2002, an upper limit is set on the rate of D{sup 0}-{bar D}{sup 0} mixing using the decay mode D*{sup +} {yields} D{sup 0}{pi}{sup +}, followed by a semi-leptonic decay of the D{sup 0}. Results are compared to previous BABAR analysis using hadronic decays. We also set limits on the flavor-changing neutral current decays D{sup 0} {yields} e{sup +}e{sup -} ({mu}{sup +}{mu}{sup -}) and the lepton-flavor violation decays D{sup 0} {yields} e{sup {+-}}{mu}{sup {-+}}.