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![Download D[sup 0]-anti D[sup 0] Mixing and Doubly Cabibbo-suppressed Decays of the Dsup PDF Online Free](https://books.google.com/books/content/images/frontcover/kwUBoQEACAAJ?fife=w200-h370)
Download or read book D[sup 0]-anti D[sup 0] Mixing and Doubly Cabibbo-suppressed Decays of the Dsup written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download D[sup 0]-[anti D][sup 0] Mixing and Doubly Cabibbo-suppressed Decays of the D[sup +]. PDF Online Free](https://books.google.com/books/content/images/frontcover/sCHYjwEACAAJ?fife=w200-h370)
Download or read book D[sup 0]-[anti D][sup 0] Mixing and Doubly Cabibbo-suppressed Decays of the D[sup +]. written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes results from Fermilab experiment E791 on D[sup 0]-[anti D][sup 0] mixing and doubly Cabibbo-suppressed decays of the D[sup +] meson. In order to search for D[sup 0]-[anti D][sup 0] mixing, the authors use only D[sup 0] mesons from D[sup *+] decays in which case the charge of the pion from the D[sup *+] decay identifies the charm quantum number of the D[sup 0] at birth. When the D[sup 0] decays, the charge of the kaon identifies the charm quantum number and this way one can tell if mixing has occurred. This kind of search can be carried out by CLEO II as well and their conclusion was that there is some evidence of a wrong sign signal (0.77 [+-] 0.25 [+-] 0.25)% of the right sign signal. However, because of a lack of lifetime information, they cannot distinguish between doubly Cabibbo-suppressed decays which are expected at the level of the observed signal and mixing. They use their excellent lifetime sensitivity to obtain separate limits. During the past year, the authors have been working on extracting D[sup +] doubly Cabibbo-suppressed decay signals from E791's data sample. These decays are interesting both because they have never been observed and because definite predictions have been made about their rates, based on models of D mesons and their decay mechanisms. Preliminary analyses of 1/3 of the data have now been completed. Figure 3 shows the Cabibbo-favored signal D[sup +] [yields] K[sup [minus]][pi][sup +][pi][sup +] and the next figure shows the signal in the doubly Cabibbo-suppressed mode D[sup +] [yields] K[sup +][pi][sup [minus]][pi][sup [minus]].
![Download 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 PDF Online Free](https://books.google.com/books/content/images/frontcover/f4XCjwEACAAJ?fife=w200-h370)
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]
![Download D0[overline D]0 Mixing and Doubly Cabibbo Suppressed Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/fd8PHQAACAAJ?fife=w200-h370)
Author : Tiehui Liu
Publisher :
ISBN 13 :
Total Pages : 386 pages
Book Rating : 4.:/5 (332 download)
Download or read book D0[overline D]0 Mixing and Doubly Cabibbo Suppressed Decays written by Tiehui Liu and published by . This book was released on 1995 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (16 download)
Download or read book D°-{anti D}° Mixing and Doubly Cabibbo-suppressed Decays of the D. written by and published by . This book was released on 1994 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes results from Fermilab experiment E791 on D°-{anti D}° mixing and doubly Cabibbo-suppressed decays of the D meson. In order to search for D°-{anti D}° mixing, the authors use only D° mesons from D{sup *+} decays in which case the charge of the pion from the D{sup *+} decay identifies the charm quantum number of the D° at birth. When the D° decays, the charge of the kaon identifies the charm quantum number and this way one can tell if mixing has occurred. This kind of search can be carried out by CLEO II as well and their conclusion was that there is some evidence of a wrong sign signal (0.77 ± 0.25 ± 0.25)% of the right sign signal. However, because of a lack of lifetime information, they cannot distinguish between doubly Cabibbo-suppressed decays which are expected at the level of the observed signal and mixing. They use their excellent lifetime sensitivity to obtain separate limits. During the past year, the authors have been working on extracting D+ doubly Cabibbo-suppressed decay signals from E791s̀ data sample. These decays are interesting both because they have never been observed and because definite predictions have been made about their rates, based on models of D mesons and their decay mechanisms. Preliminary analyses of 1/3 of the data have now been completed. Figure 3 shows the Cabibbo-favored signal D+ → K−?+?+ and the next figure shows the signal in the doubly Cabibbo-suppressed mode D+ → K+?−?−.
![Download STUDY of D exp 0 - D bar exp 0 Mixing and D exp 0 Doubly Cabibbo-Suppressed Decays [Extras] PDF Online Free](https://books.google.com/books/content/images/frontcover/LQZ8zwEACAAJ?fife=w200-h370)
Author : R. BARATE
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book STUDY of D exp 0 - D bar exp 0 Mixing and D exp 0 Doubly Cabibbo-Suppressed Decays [Extras] written by R. BARATE and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Determination of the Wrong Sign Decay Rate D0 -] K+pi- and the Sensitivity to D0-D0bar Mixing PDF Online Free](https://books.google.com/books/content/images/frontcover/eEftjwEACAAJ?fife=w200-h370)
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.
![Download D0-Anti-D0 Mixing Results From BaBar By Analysis of D0 ---] K+ Pi- Pi0 Dalitz-Plot Regions PDF Online Free](https://books.google.com/books/content/images/frontcover/SuFvAQAACAAJ?fife=w200-h370)
Author : M. G. Wilson
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (316 download)
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}
Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (16 download)
Download or read book Search for Doubly Cabibbo-suppressed D Sup + Decays written by and published by . This book was released on 1990 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preliminary results of a search for the doubly Cabibbo-suppressed D decays D+ 2!?+?−? + D+ 2!?+?°, in the MarkIII detector at SPEAR are presented. Theoretical arguments suggest that these decays may be enhanced relative to Cabibbo-allowed D+ decays. Use of hadronically tagged D+D− events produced in the decay of the? (3770), reduce backgrounds significantly, allowing the isolation of three candidate events in the?+?+?− final state and a limit on the relative decay rate of the?+?°channel. 4 refs., 2 figs.
![Download Search for D0--anti-D0 Mixing in the Decays D0 --] K+ Pi- Pi+ Pi- PDF Online Free](https://books.google.com/books/content/images/frontcover/1QkHkAEACAAJ?fife=w200-h370)
Author : B. Aubert
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (316 download)
Download or read book Search for D0--anti-D0 Mixing in the Decays D0 --] K+ Pi- Pi+ Pi- written by B. Aubert and published by . This book was released on 2006 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a search for D{sup 0}-{bar D}{sup 0} mixing in the decays D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup +}{pi}{sup -} using 230.4 fb{sup -1} of data collected with the BABAR detector at the PEP-II e{sup +}e{sup -} collider at SLAC. Assuming CP conservation, we measure the time-integrated mixing rate R{sub M} = (0.019{sub -0.015}{sup +0.016}(stat.) {+-} 0.002(syst.))%, and R{sub M}
Author : Michael Alan March
Publisher :
ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.:/5 (517 download)
Download or read book Mixing and Doubly Cabibbo-suppressed Decays of Neutral Charmed Mesons written by Michael Alan March and published by . This book was released on 2001 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Search for D°-{bar D}° Mixing and a Measurement of the Doubly Cabibbo-suppressed Decay Rate in D° 2!K[pi] Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/SRtOAQAACAAJ?fife=w200-h370)
Author :
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (871 download)
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:
Download or read book D0 - Anti-D0 Hadronic Mixing and DCS Decays from FOCUS. written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present an analysis of the decay D[sup 0] [yields] K[sup +][pi][sup -] from FOCUS. From a sample of 234 events we find a branching ratio of [Lambda](D[sup 0] [yields] K[sup +][pi][sup -])/[Lambda](D[sup 0] [yields] K[sup -][pi][sup +]) = (0.430[sub -0.061][sup +0.062] [+-] 0.031)% under the assumption of no mixing and no CP violation. We also present limits on charm mixing.
![Download Search for the Decays B0 -] D(*)+ D(*)- PDF Online Free](https://books.google.com/books/content/images/frontcover/MKvkjwEACAAJ?fife=w200-h370)
Download or read book Search for the Decays B0 -] D(*)+ D(*)- written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using the CLEO-II data set we have searched for the Cabibbo-suppressed decays B[sup 0][yields] D*[sup+]D*[sup -]. For the decay B[sup 0][yields] D*[sup+]D*[sup -], we observe one candidate signal event, with an expected background of 0.022[+-] 0.011 events. This yield corresponds to a branching fraction of[Beta](B[sup 0][yields] D*[sup+]D*[sup -])= (5.3[sub -3.7][sup+7.1](stat)[+-] 1.0(syst)) x 10[sup -4] and an upper limit of[Beta](B[sup 0][yields] D*[sup+]D[sup -])
Author : M. V. Purohit
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (316 download)
Download or read book Searches for Direct CP Violation in D+ Decays And for D0 Anti-D0 Mixing written by M. V. Purohit and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary results of a search for direct CP violation in D{sup +} {yields} K{sup +}K{sup -} {pi}{sup +} decays using 87 fb{sup -1} of data acquired by the Babar experiment running on and near the {Upsilon}(4S) from 1999-2002. The authors report the asymmetries in the signal mode and in the main resonant subchannels. Based on the same dataset, they also report a new 90% CL upper limit of 0.0042 on the rate of D{sup 0}-{bar D}{sup 0} mixing using the decay modes D*{sup +} {yields} D{sup 0}{pi}{sup +}, D{sup 0} {yields} [K/K*]ev (+c.c.).
Author : K. T. Flood
Publisher :
ISBN 13 :
Total Pages : 3 pages
Book Rating : 4.:/5 (316 download)
Download or read book Search for D0 Anti-D0 Mixing Using Semileptonic Decays written by K. T. Flood and published by . This book was released on 2005 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on an 87-fb{sup -1} dataset collected by the Babar detector at the PEP-II asymmetric-energy B-Factory, a search for D{sup 0}-{bar D}{sup 0} mixing has been made using the semileptonic decay modes D*{sup +} {yields} {pi}{sup +}D{sup 0}, D{sup 0} {yields} Ke{nu} (+c.c.). The use of these modes allows unambiguous flavor tagging and a combined fit of the D{sup 0} decay time and D*{sup +}-D{sup 0} mass difference ({Delta}M) distributions. The high-statistics sample of unmixed semileptonic D{sup 0} decays is used to model the {Delta}M distribution and time-dependence of mixed events directly from the data. Neural networks are used to select events and reconstruct the D{sup 0}. A result consistent with no charm mixing has been obtained, R{sub mix} = 0.0023 {+-} 0.0012 {+-} 0.0004. This corresponds to an upper limit of R{sub mix}
![Download Study of the Doubly and Singly Cabibbo Suppressed Decays D+ --] K+ Pi- Pi+ and D(s)+ --] K+ Pi- Pi+ in the FOCUS Experiment PDF Online Free](https://books.google.com/books/content/images/frontcover/a82TDAEACAAJ?fife=w200-h370)
Author : Laura Edera
Publisher :
ISBN 13 :
Total Pages : 137 pages
Book Rating : 4.:/5 (316 download)
Download or read book Study of the Doubly and Singly Cabibbo Suppressed Decays D+ --] K+ Pi- Pi+ and D(s)+ --] K+ Pi- Pi+ in the FOCUS Experiment written by Laura Edera and published by . This book was released on 2005 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis illustrates a complete study of the doubly and singly Cabibbo suppressed decays D{sup +} and D{sub s}{sup +} {yields} K{sup +} {pi}{sup -}{pi}{sup +}. Data for this analysis have been collected by the fixed-target high-energy photoproduction experiment FOCUS at Fermilab. The authors have selected the D{sup +} and D{sub s}{sup +} samples with cuts to obtain a sufficiently high statistics, a good signal to noise ratio and, at the same time, eliminate possible contaminations from the more copious and favored decays. The D{sup +} yield consists of 189 {+-} 24 events, with a signal to noise ratio {approx} 1; the D{sub s}{sup +} yield is 567 {+-} 31 and the signal to noise ratio is {approx} 2.5. The authors have measured {Lambda}(D{sup +} {yields} K{sup +}{pi}{sup -}{pi}{sup +})/{Lambda}(D{sup +} {yields} K{sup -}{pi}{sup +}{pi}{sup +}) = 0.0065 {+-} 0.0008 {+-} 0.004 and {Lambda}(D{sub s}{sup +} {yields} K{sup +}{pi}{sup -}{pi}{sup +})/{Lambda}(D{sub s}{sup +} {yields} K{sup +}K{sup -}{pi}{sup +}) = 0.127 {+-} 0.007 {+-} 0.014, improving the previous determinations of a factor of 2 and 5, respectively. The author has also performed a Dalitz plot analysis for both decays. The amplitude analysis for D{sub s}{sup +} {yields} K{sup +}{pi}{sup -}{pi}{sup +} represents the first available measurement for this channel.
