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Search For D0d0 Mixing With The Babar Detector Using The Hadronic Decay D0 Yields K Pi And Measurement Of The Doubly Cabibbo Suppressed Decay Rate Of D0yields K Pi
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Book Synopsis 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] ̄ by : Massimiliano Turri
Download or read book 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] ̄ written by Massimiliano Turri and published by . This book was released on 2001 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for D°-{bar D}° Mixing and a Measurement of the Doubly Cabibbo-suppressed Decay Rate in D° 2!K[pi] Decays by :
Download or read book Search for D°-{bar D}° Mixing and a Measurement of the Doubly Cabibbo-suppressed Decay Rate in D° 2!K[pi] Decays written by and published by . This book was released on 2003 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of D0 -] K+ Pi- Pi0 Decays by : Michael Galante Wilson
Download or read book Analysis of D0 -] K+ Pi- Pi0 Decays written by Michael Galante Wilson and published by . This book was released on 2005 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analyzing D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} decays, herein are presented the methods and results of a search for D{sup 0}-{bar D}{sup 0} mixing, a measurement of the branching ratio R {equivalent_to} {Lambda}(D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0})/{Lambda}(D{sup 0} {yields} K{sup -}{pi}{sup +}{pi}{sup 0}), and measurements of the contributions from D{sup 0} {yields} K{sup +}{rho}{sup -}, K*{sup +}{pi}{sup -}, K*{sup 0}{pi}{sup 0}; 230.4 fb{sup -1} of data collected from the BABAR detector at the PEP-II collider during 2000-2004 (Runs 1-4) are analyzed. An event-level tagging technique is developed, which facilitates the accurate determination of doubly Cabibbo-suppressed resonance contributions by suppressing background from Cabibbo-favored decays. The branching ratio is measured as R = (0.214 {+-} 0.008 (stat) {+-} 0.008 (syst))%, with (46.1 {+-} 3.3 (stat) {+-} 2.9 (syst))% of D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} decays proceeding through the channel D{sup 0} {yields} K*{sup +}{pi}{sup -}. The data are consistent with the null-D-mixing hypothesis at a confidence level of 10%, and the expected value of {+-} {radical}(x{sup 2} + y{sup 2}) is measured as -0.013 {+-} 0.010 (stat), indicating negative interference between mixing and doubly Cabibbo-suppressed decay. The expected value of the integrated mixing rate is (x{sup 2} + y{sup 2})/2 = (0.013 {+-} 0.013 (stat))%.
Book Synopsis Search for D[sup 0]-[bar D][sup 0] Mixing and a Measurement of the Doubly Cabibbo-suppressed Decay Rate in D[sup 0][yields] K[pi] Decays by :
Download or read book Search for D[sup 0]-[bar D][sup 0] Mixing and a Measurement of the Doubly Cabibbo-suppressed Decay Rate in D[sup 0][yields] K[pi] Decays written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present results of a search for D[sup 0]-[bar D][sup 0] mixing and a measurement of R[sub D], the ratio of doubly Cabibbo-suppressed decays to Cabibbo-favored decays, based on an analysis of D[sup 0][yields] K[sup+][pi][sup -] decays in 57.1 fb[sup -1] of data collected at or just below the[Upsilon](4S) resonance with the BABAR detector at the PEP-II collider. Our results are compatible with no mixing and no CP violation. At the 95% confidence level, allowing for CP violation, we find the mixing parameters x[prime][sup 2]
Book Synopsis D0 Anti-D0 Mixing Results From BaBar with D0 to K+ Pi- Pi0 by :
Download or read book D0 Anti-D0 Mixing Results From BaBar with D0 to K+ Pi- Pi0 written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a preliminary search for D°-{bar D}° mixing using the decays D° → K?−?°, additionally presenting Dalitz-plot distributions and a measurement of the branching ratio for this mode. A new tagging technique is used to produce the doubly Cabibbo-suppressed Dalitz plot, which in turn is used to motivate the method used for the D-mixing search. We analyze 230.4 fb−1 of data collected from the BABAR detector at the PEP-II collider. Assuming CP conservation, we find R{sub M}
Book Synopsis D0-Anti-D0 Mixing Results From BaBar By Analysis of D0 ---] K+ Pi- Pi0 Dalitz-Plot Regions by : M. G. Wilson
Download or read book D0-Anti-D0 Mixing Results From BaBar By Analysis of D0 ---] K+ Pi- Pi0 Dalitz-Plot Regions written by M. G. Wilson and published by . This book was released on 2006 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a preliminary search for D{sup 0}-{bar D}{sup 0} mixing using the decays D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0}, additionally presenting Dalitz-plot distributions and a measurement of the branching ratio for this mode. A new tagging technique is used to produce the doubly Cabibbo-suppressed Dalitz plot, which in turn is used to motivate the method used for the D-mixing search. We analyze 230.4 fb{sup -1} of data collected from the BABAR detector at the PEP-II collider. Assuming CP conservation, we find R{sub M}
Book Synopsis Evidence for D0 - Anti-D0 Mixing at Babar by :
Download or read book Evidence for D0 - Anti-D0 Mixing at Babar written by and published by . This book was released on 2007 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for D0 - Anti-D0 Mixing and Branching-Ratio Measurement in the Decay D0 to K+ Pi- Pi0 by :
Download or read book Search for D0 - Anti-D0 Mixing and Branching-Ratio Measurement in the Decay D0 to K+ Pi- Pi0 written by and published by . This book was released on 2006 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a search for D°-{bar D}° mixing using regions of phase space in which the rate of doubly Cabibbo-suppressed decays D° → K+?−?° relative to Cabibbo-favored decays D° → K− ?+?° is reduced. They analyze 230.4 fb−1 of data collected with the BABAR detector at the PEP-II e+e− collider at SLAC. They present results with and without the assumption of CP conservation. Assuming CP conservation, they measure the time-integrated mixing rate R{sub M} = (0.023{sub -0.014}{sup +0.018}(stat.) ± 0.004(syst.))%, and R{sub M}
Book Synopsis Analysis of $D^{0} - \bar{D}^0$ Mixing in $D^{0} - K\pi$ Decays Using the CDF II Detector by :
Download or read book Analysis of $D^{0} - \bar{D}^0$ Mixing in $D^{0} - K\pi$ Decays Using the CDF II Detector written by and published by . This book was released on 2009 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Determination of the Wrong Sign Decay Rate D0 -] K+pi- and the Sensitivity to D0-D0bar Mixing by :
Download or read book Determination of the Wrong Sign Decay Rate D0 -] K+pi- and the Sensitivity to D0-D0bar Mixing written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The D[sup 0] meson can decay to the wrong sign K[sup+][pi][sup -] state either through a doubly Cabibbo suppressed decay or via mixing to the[bar D][sup 0] state followed by the Cabibbo favoured decay[bar D][sup 0][yields] K[sup+][pi][sup -]. We measure the rate of wrong sign decays relative to the Cabibbo favoured decay to (0.383[+-] 0.044[+-] 0.022)% and give our sensitivity to a mixing signal.
Book Synopsis Measurement of the Doubly Cabibbo Suppressed Decay D0 ---] K+ Pi- and a Search for Charm Mixing by :
Download or read book Measurement of the Doubly Cabibbo Suppressed Decay D0 ---] K+ Pi- and a Search for Charm Mixing written by and published by . This book was released on 2004 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present an analysis of the decay D° → K?− based on FOCUS data. From a sample of 234 signal events, they find a branching ratio of?(D° → K+?−)/?(D° → K−?+) = (0.429{sub -0.061}{sup +0-.063} ± 0.027)% under the assumptions of no mixing and no CP violation. Allowing for CP violation, the find a branching ratio of (0.435{sub -0.061}{sup +0.063} ± 0.028)% and a CP asymmetry of 0.178{sub -0.141}{sup +0.144} ± 0.041. The branching ratio for the case of mixing with no CP violation is (0.381{sub -0.163}{sup +0.167} ± 0.092)%. They also present limits on charm mixing.
Book Synopsis Charm Mixing at BaBar by : Ray F. Cowan
Download or read book Charm Mixing at BaBar written by Ray F. Cowan and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on searches for D{sup 0}-{bar D}{sup 0} mixing using decay-time distributions of D{sup 0} {yields} K{pi} and D{sup 0} {yields} K{sup (*)}e{nu} decays and a lifetime ratio analysis of D{sup 0} {yields} K{sup +}K{sup -}, {pi}{sup +}{pi}{sup -} decays using 91 fb{sup -1} of e{sup +}e{sup -} data taken at the PEP-II asymmetric-energy storage ring at energies near 10.6 GeV. Searches for CP-violation in D{sup 0} mixing and decay are also reported, as well as a measurement of R{sub D}, the ratio of the doubly Cabibbo-suppressed decay rate to the Cabibbo-allowed decay rate.
Book Synopsis Measurement of D0̂-\overline{D0̂} Mixing Using the Ratio of Lifetimes for the Decays D0̂ \to K-̂\pi+̂, K-̂K+̂, and \pi-̂\pi+̂ by :
Download or read book Measurement of D0̂-\overline{D0̂} Mixing Using the Ratio of Lifetimes for the Decays D0̂ \to K-̂\pi+̂, K-̂K+̂, and \pi-̂\pi+̂ written by and published by . This book was released on 2008 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a measurement of D°-{bar D}° mixing parameters using the ratios of lifetimes extracted from a sample of D° mesons produced through the process D* → D°?+, that decay to K−?+, I−K+, or?−?+. the Cabibbo-suppressed modes K−K+ and?−?+ are compared to the Cabibbo-favored mode K−?+ to obtain a measurement of ycp, which in the limit of CP conservation corresponds to the mixing parameter y. The analysis is based on a data sample of 384 fb−1 collected by the BABAR detector at the PEP-II asymmetric-energy e+e− collider. They obtain ycp = [1.24 ± 0.39(stat) ± 0.13(syst)]%, which is evidence of D°-{bar D}° mixing at the 3? level, and?Y = [-0.26 ± 0.36(stat) ± 0.08(syst)]%, where?Y constrains possible CP violation. Combining this result with a previous BABAR measurement of ycp obtained from a separate sample of D° → K−K+ events, they obtain ycp = [1.03 ± 0.33(stat) ± 0.19(syst)]%.
Book Synopsis Measurement of D0-D0bar Mixing Using the Ratio of D0-]K-pi and K-K Lifetimes by :
Download or read book Measurement of D0-D0bar Mixing Using the Ratio of D0-]K-pi and K-K Lifetimes written by and published by . This book was released on 2009 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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?
Book Synopsis PRELIMINARY STUDY OF D0 ---] K PI PI0 DECAYS WITH DALITZ PLOTS. by :
Download or read book PRELIMINARY STUDY OF D0 ---] K PI PI0 DECAYS WITH DALITZ PLOTS. written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle physicists study the smallest particles and most basic rules of their interactions in humankind's current scope. The Charm Analysis Working Group (CWG) of the BaBar Collaboration studies decays involving the charm quark. They currently study mixing in D decays, an interesting and poorly understood phenomenon in current physics models. We, as part of the CWG, investigated the plausibility of using Dalitz plots and the BaBar analysis framework to study mixing in Wrong Sign (WS) D[sup 0][yields] K[pi][pi][sup 0] decays. Others in the CWG have studied mixing in the 2-body decay, D[sup 0][yields] K[pi]. The 3-body decay analyzed with the RooFitDalitz analysis package and Dalitz plots provides more information and another way of separating Doubly Cabibbo Suppressed Decays (DCSD) from mixing--which share the same end products. Through doing many simulations, we have demonstrated the usefulness of this approach. We selected D[sup 0][yields] K[pi][pi][sup 0] events from Simulation Production run No. 4 (SP4) and BaBar's run 1 and run 2. We made Dalitz plots with this data. Now that we better understand Dalitz plots and software, we plan to select WS D[sup 0][yields] K[pi][pi][sup 0] events and perform rate fits as discussed in BaBar Analysis Document (BAD) No. 443, as well as fits for several different decay times and resonances, in order to further distinguish DCSD from mixing.
Book Synopsis Doubly Cabibbo Suppressed D+ Decays and Singly Cabibbo Suppressed D+[subscript S] Decays in 220 GeV G + P Interactions by : Gary Patrick Grim
Download or read book Doubly Cabibbo Suppressed D+ Decays and Singly Cabibbo Suppressed D+[subscript S] Decays in 220 GeV G + P Interactions written by Gary Patrick Grim and published by . This book was released on 1995 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Study of Three-body Cabibbo-suppressed D0 Decays and Extraction of CP Violation Parameters by :
Download or read book Experimental Study of Three-body Cabibbo-suppressed D0 Decays and Extraction of CP Violation Parameters written by and published by . This book was released on 2008 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: I present measurements of the relative branching ratios, Dalitz plot structures and CP-asymmetry values in the three-body singly Cabibbo-suppressed decays D0 ->pi-pi+pi0 and D0 ->K-K+pi0 using data collected by the BaBar detector at the PEP-II asymmetric-energy ring at SLAC. I apply the results of the D0 ->pi-pi+pi0 analysis to extracting CP-violation parameters related to the CKM angle gamma (or phi_3) using the decay B- -> D0[->pi-pi+pi0] K-
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