Download or read book Preliminary Measurements of the Time Dependence of B sub D bar B sub D Mixing with Kaon and Charge Dipole Tags written by and published by . This book was released on 1996 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report two preliminary measurements of the time dependence of B{sub d}°- B{sub d}° mixing using novel techniques with a sample of 150,000 hadronic Z{sup O} decays collected by the SLD experiment at the SLC. B decay vertices are reconstructed inclusively with a topological technique and the B hadron flavor at production is determined by exploiting the large left-right forward-backward asymmetry of Z{sup O} → b {bar b} decays in combination with a jet charge technique. Two methods are used to tag the B flavor at decay. The first uses the charge of kaons attached to the B decay vertex and identified with the Cherenkov Ring Imaging Detector. The second measurement is based on the construction of a charge dipole of the topological vertices to separate the B{sub d}{sup O}/B{sub d}° decays by exploiting the B → D cascade charge structure. The measurement of the oscillation frequency yields [Delta]m{sub d} = 0.58 ± 0.07(stat)±0.08(syst) ps−1 and 0.56 ± 0.08(stat)±0.04(syst) ps−1 for the kaon and dipole tags respectively.

Download or read book Preliminary Measurements of the Time Dependence of B sub D sup 0 bar B sub D sup 0 Mixing with Kaon and Charge Dipole Tags written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report two preliminary measurements of the time dependence of B[sub d][sup 0]- B[sub d][sup 0] mixing using novel techniques with a sample of 150,000 hadronic Z[sup O] decays collected by the SLD experiment at the SLC. B decay vertices are reconstructed inclusively with a topological technique and the B hadron flavor at production is determined by exploiting the large left-right forward-backward asymmetry of Z[sup O][r-arrow] b[bar b] decays in combination with a jet charge technique. Two methods are used to tag the B flavor at decay. The first uses the charge of kaons attached to the B decay vertex and identified with the Cherenkov Ring Imaging Detector. The second measurement is based on the construction of a charge dipole of the topological vertices to separate the B[sub d][sup O]/B[sub d][sup 0] decays by exploiting the B[r-arrow] D cascade charge structure. The measurement of the oscillation frequency yields[Delta]m[sub d]= 0.58[+-] 0.07(stat)[+-]0.08(syst) ps[sup -1] and 0.56[+-] 0.08(stat)[+-]0.04(syst) ps[sup[minus]1] for the kaon and dipole tags respectively.

Download or read book A Measurement of the Time Dependence of B sub D bar B sub D Mixing with Kaon Tagging written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The time dependence of B[sub d] -[bar B][sub d] mixing has been measured in b[bar b] events containing one or more kaons at the SLD experiment at the Stanford Linear Accelerator Center. A simultaneous measurement of the ''right sign production fraction'' of kaons from B[sub d] decays has also been made. The initial state B hadron flavor was determined using the large forward-backward asymmetry provided by the polarized electron beam of the SLC in combination with a jet charge technique and information from the opposite hemisphere. From a sample of 400,000 Z[sup 0] events collected by the SLD experiment at SLC from 1996 to 1998, the kaon right sign production fraction has been measured to be 0.797[+-] 0.022 and the mass difference between the two B[sub d] eigenstates has been measured to be[Delta]m[sub d]= 0.503[+-] 0.028[+-] 0.020 ps[sup -1].

Download or read book Preliminary Measurement of Time dependent B sub D B sub D Mixing Using Topology and Charge Selected Semi leptonic B Decays written by and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The time dependence of B{sub d}°-B{sub d}° mixing has been measured using a sample of 150,000 hadronic Z° decays collected by the SLD experiment at the SLC between 1993 and 1995. The analysis identifies the semileptonic decays of B mesons with high (p, p{sub t}) leptons and reconstructs the B meson decay length and charge by vertexing the lepton with a partially reconstructed D meson. Vertex charge is used to enrich the selection of neutral over charged B mesons. This method results in a sample of 581 neutral decays with high charge purity. The B candidate is tagged at production with a combined tag that exploits the large polarized b forward-backward asymmetry in conjunction with the opposite hemisphere b jet charge. The final state is tagged by the sign of the high (p, p{sub t}) lepton. From their preliminary analysis the authors find a mass difference between the two B{sub d}° mass eigenstates of, [Delta]m{sub d} = 0.452 ± 0.074(stat) ± 0.049(syst) ps−1.

Download or read book Preliminary Measurement of Time dependent B sub D sup 0 B sub D sup 0 Mixing Using Topology and Charge Selected Semi leptonic B Decays written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The time dependence of B[sub d][sup 0]-B[sub d][sup 0] mixing has been measured using a sample of 150,000 hadronic Z[sup 0] decays collected by the SLD experiment at the SLC between 1993 and 1995. The analysis identifies the semileptonic decays of B mesons with high (p, p[sub t]) leptons and reconstructs the B meson decay length and charge by vertexing the lepton with a partially reconstructed D meson. Vertex charge is used to enrich the selection of neutral over charged B mesons. This method results in a sample of 581 neutral decays with high charge purity. The B candidate is tagged at production with a combined tag that exploits the large polarized b forward-backward asymmetry in conjunction with the opposite hemisphere b jet charge. The final state is tagged by the sign of the high (p, p[sub t]) lepton. From their preliminary analysis the authors find a mass difference between the two B[sub d][sup 0] mass eigenstates of, [Delta]m[sub d]= 0.452[+-] 0.074(stat)[+-] 0.049(syst) ps[sup[minus]1].

Download or read book Measurement of Time Dependent B sub D sup 0 bar B sub D sup 0 Mixing Parameter Using Opposite Side Lepton and D Meson in P bar P Collisions at radical s written by and published by . This book was released on 1998 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the results from the investigation of time dependent B{sub d}° {bar B}{sub d}° mixing in B → lepton X, B{sub d}° → D*− → {bar D}°?−, {bar D}° → K?− channel in p{bar p} collisions at √s = 1.8 TeV using 110 pb−1 data collected with the CDF detector at the Fermilab Tevatron Collider. The {bar D}° vertex is reconstructed. The B{sub d}° decay length is estimated using the distance from the primary vertex to the measured position of the D° vertex. The B° momentum is estimated using the D° momentum and a kinematic correction factor from Monte Carlo. With the dilution floating,?M{sub d} = 0.55 ±{sub 0.16}{sup 0.15} (stat) ± 0.06 (syst)ps−1 is measured.

Download or read book Measurement of Time dependent B sub D degrees bar B sub D degrees Mixing Using Inclusive Semileptonic Decays written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The time dependence of B[sub d][sup 0] - W[sub d][sup o] mixing has been observed in events containing high-P[sub t] leptons using a highly inclusive vertexing method to determine the B decay position. The initial state B hadron flavor was determined using the large forward-backward asymmetry provided by the highly polarized electron beam of SLC in combination with a jet charge technique. From a sample of 150,000 hadronic Z[degrees] decays observed in the SLD detector at the SLC between 1993 and 1995, a preliminary analysis of the mass difference between the two Bo mass eigenstates yields[Delta]m[sub d]= 0.520[+-] 0.072(stat)[+-] 0.035(syst) ps[sup -1].

Download or read book Measurement of Time Dependent B sub D sup 0 bar B sub D sup 0 Mixing Parameter Using Opposite Side Lepton and D Meson in P bar P Collisions At radical written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the results from the investigation of time dependent B[sub d][sup 0][bar B][sub d][sup 0] mixing in B[yields] lepton X, B[sub d][sup 0][yields] D*[sup -][yields][bar D][sup 0][pi][sup -], [bar D][sup 0][yields] K[sup+][pi][sup -] channel in p[bar p] collisions at[radical]s= 1.8 TeV using 110 pb[sup -1] data collected with the CDF detector at the Fermilab Tevatron Collider. The[bar D][sup 0] vertex is reconstructed. The B[sub d][sup 0] decay length is estimated using the distance from the primary vertex to the measured position of the D[sup 0] vertex. The B[sup 0] momentum is estimated using the D[sup 0] momentum and a kinematic correction factor from Monte Carlo. With the dilution floating, [Delta]M[sub d]= 0.55[+-][sub 0.16][sup 0.15] (stat)[+-] 0.06 (syst)ps[sup -1] is measured.

Download or read book Measurement of Time dependent B sub D bar B sub D Mixing Using Inclusive Semileptonic Decays written by and published by . This book was released on 1996 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The time dependence of B{sub d}° - W{sub d}{sup o} mixing has been observed in events containing high-P{sub t} leptons using a highly inclusive vertexing method to determine the B decay position. The initial state B hadron flavor was determined using the large forward-backward asymmetry provided by the highly polarized electron beam of SLC in combination with a jet charge technique. From a sample of 150,000 hadronic Z° decays observed in the SLD detector at the SLC between 1993 and 1995, a preliminary analysis of the mass difference between the two Bo mass eigenstates yields [Delta]m{sub d} = 0.520 ± 0.072(stat) ± 0.035(syst) ps−1.

Download or read book Time Dependent B Bar B Mixing at SLD written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report several preliminary studies of the time dependence of B{sub s}°-{bar B}{sub s}° and B{sub d}°-{bar B}{sub d}° mixing using a sample of 400,000 hadronic Z decays collected by the SLD experiment at the SLC. The study of B{sub d}°-{bar B}{sub d}° mixing determines a value of [Delta]m{sub d} = 0.503 ± 0.028(stat) ± 0.020(sys)ps−1. In the study of B{sub s}°-{bar B}{sub s}° mixing, oscillation frequencies up to [Delta]m{sub s}

Download or read book Time Dependent B sup 0 Bar B sup 0 Mixing at SLD written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report several preliminary studies of the time dependence of B[sub s][sup 0]-[bar B][sub s][sup 0] and B[sub d][sup 0]-[bar B][sub d][sup 0] mixing using a sample of 400,000 hadronic Z decays collected by the SLD experiment at the SLC. The study of B[sub d][sup 0]-[bar B][sub d][sup 0] mixing determines a value of[Delta]m[sub d]= 0.503[+-] 0.028(stat)[+-] 0.020(sys)ps[sup -1]. In the study of B[sub s][sup 0]-[bar B][sub s][sup 0] mixing, oscillation frequencies up to[Delta]m[sub s]

Download or read book Measurement of B0bar B0 Mixing Via Time Evolution written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of Time Dependent B D 0 Anti B D 0 Mixing at SLD written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The time dependence of B[sub d][sup o]-[bar B][sub d][sup o] mixing has been observed in events containing high P[sub t] leptons using a highly inclusive vertexing method to determine the B decay length and boost. The initial state B hadron flavour is determined using the large forward-backward asymmetry provided by the highly polarized electron beams of SLC in combination with a jet charge technique. From a sample of 150,000 hadronic Z[sup o] decays observed in the SLD detector at the SLC between 1993 and 1995, the mass difference between the two B[sub d][sup o] mass eigenstates has been measured to be [Delta]m[sub d] = 0.486 [+-] 0.065(stat) [+-] 0.035(syst) ps[sup -1].

Download or read book Measurement of Time Dependent B D 0 Anti B D 0 Mixing at SLD written by Ming Xiong Liu and published by . This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The time dependence of B{sub d}{sup o}-{bar B}{sub d}{sup o} mixing has been observed in events containing high P{sub t} leptons using a highly inclusive vertexing method to determine the B decay length and boost. The initial state B hadron flavour is determined using the large forward-backward asymmetry provided by the highly polarized electron beams of SLC in combination with a jet charge technique. From a sample of 150,000 hadronic Z{sup o} decays observed in the SLD detector at the SLC between 1993 and 1995, the mass difference between the two B{sub d}{sup o} mass eigenstates has been measured to be {Delta}m{sub d} = 0.486 {+-} 0.065(stat) {+-} 0.035(syst) ps{sup -1}.

Download or read book Measurement of the bar B Lifetime and of the B bar B Oscillation Frequency Using Partially Reconstructed bar B D L anti nu sub L Decays written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a simultaneous measurement of the {bar B}° lifetime [tau](B°) and mixing parameter [Delta]m{sub d}. They use a sample of about 50000 {bar B}° --> D* 1 {anti {nu}}(l) partially reconstructed decays identified with the BABAR detector at the PEP-II storage ring at SLAC, where the flavor of the other B meson is determined from the charge of another high momentum lepton in the same event. The preliminary results are: tau(B°) = (1.50 ± 0.008(stat.) ± 0.030(syst.)) ps, [Delta]m{sub d} = (0.523 ± 0.004(stat.) ± 0.007(syst.)) p{sup s}( -1).

Download or read book B sub D Mixing and CP Violation Measurements at the Tevatron written by and published by . This book was released on 1999 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present six time-dependent B{sub d}° mixing measurements of [Delta]m{sub d} from the CDF Run I data. The CDF average is [Delta]m{sub d} = .494{sub {+-} 0.26}{sup {+-} 0.26}(ps)−1. They also present a measurement of the CP-violating asymmetry sin (2[beta]) using a sample of B°/{bar B}° → J/[psi]K{sub s}° decays and report sin(2[beta]) = .79{sub -.44}{sup +.41}.

Download or read book Time Dependent B sub S bar B sub S Mixing Using Inclusive and Semileptonic B Decays at SLD written by and published by . This book was released on 1999 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: We set a preliminary 95% C.L. exclusion on the oscillation frequency of B{sub s}°-{bar B}{sub s}° mixing using a sample of 350,000 hadronic Z° decays collected by the SLD experiment at the SLC during the 1997-98 run. The analyses determine the b-hadron flavor at production by exploiting the large forward-backward asymmetry of polarized Z° 2!b{bar b} decays as well as information from the hemisphere opposite that of the reconstructed B decay. In one analysis, B decay vertices are reconstructed inclusively with a new topological technique, and separation between B{sub s}° and {bar B}{sub s}° decays exploits the B{sub s}° 2!D{sub s}− cascade charge structure. In the other analysis, semileptonic decays are selected and the B decay point is reconstructed by intersecting a lepton track with the trajectory of a topologically reconstructed D meson. The two analyses are combined with a third analysis described elsewhere to exclude the following values of the B{sub s}°-{bar B}{sub s}° mixing oscillation frequency: [Delta]m{sub s}