![MEASUREMENT OF THE B[sup 0] LIFETIME USING PARTIAL RECONSTRUCTION. PDF](https://books.google.com/books/content/images/frontcover/NIILkAEACAAJ?fife=w80-h100)
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We present here the first measurement of the B[sup 0] lifetime using partial reconstruction in B[sup 0] [yields] D*[sup -] [rho][sup +] decay. A sample of approximately 5500 B[sup 0] [yields] D*[sup -] [rho][sup +] events were identified among 22.7 million B[bar B] pairs collected by the BABAR experiment during the years 1999-2000. With this data, the B[sup 0] lifetime is measured to be 1.616 [+-] 0.064 [+-] 0.075 ps, in good agreement with the world average. This measurement demonstrates that is it possible to use this technique to perform time-dependent B[sup 0] decay analysis that is central to the measurement of the charge-parity (CP) asymmetries. Investigation of CP observables through measurements of the decays of B[sup 0] mesons is the primary goal of the BABAR experiment at the PEP-II storage ring located at Stanford Linear Accelerator Center (SLAC). As the B[sup 0] particle decays to final states that are directly sensitive to the CP parameter [gamma] are highly suppressed, a promising alternative approach is to use the final state B[sup 0] [yields] D*h. Using the partial event reconstruction analysis method it is possible to compensate for the small CP asymmetries in this decay.
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Languages : en
Pages : 242
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We present here the first measurement of the B° lifetime using partial reconstruction in B° → D*−? decay. A sample of approximately 5500 B° → D*−?+ events were identified among 22.7 million B{bar B} pairs collected by the BABAR experiment during the years 1999-2000. With this data, the B° lifetime is measured to be 1.616 ± 0.064 ± 0.075 ps, in good agreement with the world average. This measurement demonstrates that is it possible to use this technique to perform time-dependent B° decay analysis that is central to the measurement of the charge-parity (CP) asymmetries. Investigation of CP observables through measurements of the decays of B° mesons is the primary goal of the BABAR experiment at the PEP-II storage ring located at Stanford Linear Accelerator Center (SLAC). As the B° particle decays to final states that are directly sensitive to the CP parameter? are highly suppressed, a promising alternative approach is to use the final state B° → D*h. Using the partial event reconstruction analysis method it is possible to compensate for the small CP asymmetries in this decay.
Author: M. Krishnamurthy
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Languages : en
Pages : 242
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We present here the first measurement of the B{sup 0} lifetime using partial reconstruction in B{sup 0} {yields} D*{sup -} {rho}{sup +} decay. A sample of approximately 5500 B{sup 0} {yields} D*{sup -} {rho}{sup +} events were identified among 22.7 million B{bar B} pairs collected by the BABAR experiment during the years 1999-2000. With this data, the B{sup 0} lifetime is measured to be 1.616 {+-} 0.064 {+-} 0.075 ps, in good agreement with the world average. This measurement demonstrates that is it possible to use this technique to perform time-dependent B{sup 0} decay analysis that is central to the measurement of the charge-parity (CP) asymmetries. Investigation of CP observables through measurements of the decays of B{sup 0} mesons is the primary goal of the BABAR experiment at the PEP-II storage ring located at Stanford Linear Accelerator Center (SLAC). As the B{sup 0} particle decays to final states that are directly sensitive to the CP parameter {gamma} are highly suppressed, a promising alternative approach is to use the final state B{sup 0} {yields} D*h. Using the partial event reconstruction analysis method it is possible to compensate for the small CP asymmetries in this decay.
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Languages : en
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Author: Sheldon Stone
Publisher: World Scientific
ISBN: 9789810218362
Category : Science
Languages : en
Pages : 676
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This 2nd edition is an extensive update of "B Decays?. The revisions are necessary because of the extensive amount of new data and new theoretical ideas. This book reviews what is known about b-quark decays and also looks at what can be learned in the future.The importance of this research area is increasing, as evidenced by the approval of the luminosity upgrade for CESR and the asymmetric B factories at SLAC and KEK, and the possibility of experiments at hadron colliders.The key experimental observations made thus far, measurement of the lifetimes of the different B species, B0-B0 mixing, the discovery of ?Penguin? mediated decays, and the extraction of the CKM matrix elements Vub and Vcb from semileptonic decays, as well as more mundane results, are described in great detail by the experimentalists who have been closely involved with making the measurements. Theoretical progress in understanding b-quark decays using HQET and lattice gauge techniques are described by theorists who have developed and used these techniques.Synthesizing the experimental and theoretical information, several articles discuss the implications for the ?Standard Model? and how further tests can be done using measurements of CP violation in the B system.
![Measurement of the B0 Lifetime with Partially Reconstructed B0 -] D*- L+ /u Decays PDF](https://books.google.com/books/content/images/frontcover/nlTEjwEACAAJ?fife=w80-h100)
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The B[sup 0] lifetime has been measured with a sample of 23 million B[bar B] pairs collected by the BABAR detector at the PEP-II e[sup+]e[sup -] storage ring during 1999 and 2000. Events from the semileptonic decay B[sup 0][yields] D*[sup -][ell][sup+][nu][sub[ell]] have been selected with a partial reconstruction method in which only the charged lepton and the slow[pi] from the D*[sup -][yields][bar D][sup 0][pi][sup -] decay are reconstructed. The result is[tau][sub B][sup 0]= 1.529[+-] 0.012 (stat)[+-] 0.029 (syst) ps.
![A Precision Measurement of the B[subscript S] Lifetime in Pp̄ Collisions at [square Root]s PDF](https://books.google.com/books/content/images/frontcover/OGVOAQAAMAAJ?fife=w80-h100)
Author: Amanda Jean Deisher
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Languages : en
Pages : 452
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![A Measurement of the Neutral B Meson Lifetime Using Partially Reconstructed B0 -] D*-pi+ Decays PDF](https://books.google.com/books/content/images/frontcover/dLvVjwEACAAJ?fife=w80-h100)
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The neutral B meson lifetime has been measured with the data collected by the BABAR detector at the PEP-II storage ring during the year 2000 for a total integrated luminosity of 20.3 fb[sup -1]. The B[sup 0][yields] D*[sup -][pi][sup+] decays have been selected with a partial reconstruction method in which only the fast pion from the B[sup 0] decay and the slow pion from D*[sup -][yields][bar D][sup 0][pi][sup -] are reconstructed. The B[sup 0] lifetime has been measured to be 1.510[+-] 0.040[+-] 0.038 ps with a sample of 6971[+-] 241 reconstructed signal events.
Author: John Carr
Publisher: Atlantica Séguier Frontières
ISBN: 9782863321461
Category : Nuclear physics
Languages : en
Pages : 1044
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Author: Michael C. Birse
Publisher: World Scientific
ISBN: 9814532037
Category : Hadron spectroscopy
Languages : en
Pages : 592
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