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 D0 Yields K Pi

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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 D0 Yields K Pi

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Author : Massimiliano Turri
language : en
Publisher:
Release Date : 2001

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 D0 Yields K Pi written by Massimiliano Turri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Hadrons categories.

Analysis Of D0 K Pi Pi0 Decays

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Author : Michael Galante Wilson
language : en
Publisher:
Release Date : 2005

Analysis Of D0 K Pi Pi0 Decays written by Michael Galante Wilson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.

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))%.

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

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Author :
language : en
Publisher:
Release Date : 2003

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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

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]

Search For D Bar D Mixing And A Measurement Of The Doubly Cabibbo Suppressed Decay Rate In D 2 K Pi Decays

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Author :
language : en
Publisher:
Release Date : 2003

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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

Charm Mixing At Babar

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Author : Ray F. Cowan
language : en
Publisher:
Release Date : 2006

Charm Mixing At Babar written by Ray F. Cowan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

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.

Search For D0 Anti D0 Mixing And Branching Ratio Measurement In The Decay D0 To K Pi Pi0

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Author :
language : en
Publisher:
Release Date : 2006

Search For D0 Anti D0 Mixing And Branching Ratio Measurement In The Decay D0 To K Pi Pi0 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

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}

Measurement Of The Doubly Cabibbo Suppressed Decay D0 K Pi And A Search For Charm Mixing

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Author :
language : en
Publisher:
Release Date : 2004

Measurement Of The Doubly Cabibbo Suppressed Decay D0 K Pi And A Search For Charm Mixing written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

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.

Determination Of The Wrong Sign Decay Rate D0 K Pi And The Sensitivity To D0 D0bar Mixing

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Author :
language : en
Publisher:
Release Date : 2002

Determination Of The Wrong Sign Decay Rate D0 K Pi And The Sensitivity To D0 D0bar Mixing written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.

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.

Analysis Of D 0 Bar D 0 Mixing In D 0 K Pi Decays Using The Cdf Ii Detector

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Author :
language : en
Publisher:
Release Date : 2009

Analysis Of D 0 Bar D 0 Mixing In D 0 K Pi Decays Using The Cdf Ii Detector written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.

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).

Measurement Of D0 Overline D0 Mixing Using The Ratio Of Lifetimes For The Decays D0 To K Pi K K And Pi Pi

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Author :
language : en
Publisher:
Release Date : 2008

Measurement Of D0 Overline D0 Mixing Using The Ratio Of Lifetimes For The Decays D0 To K Pi K K And Pi Pi written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

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)]%.