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 Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
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]
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
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]
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
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.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
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]].
Author: Publisher: ISBN: Category : Languages : en Pages : 4
Book Description
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.
Author: M. G. Wilson Publisher: ISBN: Category : Languages : en Pages : 5
Book Description
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: Category : Languages : en Pages :
Book Description
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 -])
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Author: ![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](https://books.google.com/books/content/images/frontcover/f4XCjwEACAAJ?fife=w80-h100)
Author: ![D[sup 0]-anti D[sup 0] Mixing and Doubly Cabibbo-suppressed Decays of the Dsup PDF](https://books.google.com/books/content/images/frontcover/kwUBoQEACAAJ?fife=w80-h100)
Author: ![Search for D°-{bar D}° Mixing and a Measurement of the Doubly Cabibbo-suppressed Decay Rate in D° 2!K[pi] Decays PDF](https://books.google.com/books/content/images/frontcover/SRtOAQAACAAJ?fife=w80-h100)
Author: ![Determination of the Wrong Sign Decay Rate D0 -] K+pi- and the Sensitivity to D0-D0bar Mixing PDF](https://books.google.com/books/content/images/frontcover/eEftjwEACAAJ?fife=w80-h100)
Author: ![D[sup 0]-[anti D][sup 0] Mixing and Doubly Cabibbo-suppressed Decays of the D[sup +]. PDF](https://books.google.com/books/content/images/frontcover/sCHYjwEACAAJ?fife=w80-h100)
Author: ![STUDY of D exp 0 - D bar exp 0 Mixing and D exp 0 Doubly Cabibbo-Suppressed Decays [Extras] PDF](https://books.google.com/books/content/images/frontcover/LQZ8zwEACAAJ?fife=w80-h100)
Author: R. BARATE
Author: ![D0-Anti-D0 Mixing Results From BaBar By Analysis of D0 ---] K+ Pi- Pi0 Dalitz-Plot Regions PDF](https://books.google.com/books/content/images/frontcover/SuFvAQAACAAJ?fife=w80-h100)
Author: M. G. Wilson![Analysis of [neutral-D to a Charged Kaon, a Charged Pion, and a Neutral Pion] Decays PDF](https://books.google.com/books/content/images/frontcover/A6nx0nMiKBYC?fife=w80-h100)
Author: Michael Galante Wilson![Search for the Decays B0 -] D(*)+ D(*)- PDF](https://books.google.com/books/content/images/frontcover/MKvkjwEACAAJ?fife=w80-h100)
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