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Preliminary Measurement Of Time Dependent Bsub D Bsub D Mixing Using Topology And Charge Selected Semi Leptonic B Decays
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Book Synopsis Preliminary Measurement of Time-dependent B{sub D}°-B{sub D}° Mixing Using Topology and Charge Selected Semi-leptonic B Decays by :
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.
Book Synopsis 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 by :
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].
Book Synopsis Measurement of Time-dependent B{sub D}° - {bar B}{sub D}° Mixing Using Inclusive Semileptonic Decays by :
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.
Book Synopsis Measurement of Time-dependent B[sub D][degrees] -[bar B][sub D][degrees] Mixing Using Inclusive Semileptonic Decays by :
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].
Book Synopsis Time Dependent B{sub S}°-{bar B}{sub S}° Mixing Using Inclusive and Semileptonic B Decays at SLD. by :
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}
Book Synopsis Time Dependent B[sub S][sup 0]-[bar B][sub S][sup 0] Mixing Using Inclusive and Semileptonic B Decays at SLD. by :
Download or read book Time Dependent B[sub S][sup 0]-[bar B][sub S][sup 0] Mixing Using Inclusive and Semileptonic B Decays 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: We set a preliminary 95% C.L. exclusion on the oscillation frequency of B[sub s][sup 0]-[bar B][sub s][sup 0] mixing using a sample of 350,000 hadronic Z[sup 0] 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[sup 0][yields] 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][sup 0] and[bar B][sub s][sup 0] decays exploits the B[sub s][sup 0][yields] D[sub s][sup -] 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][sup 0]-[bar B][sub s][sup 0] mixing oscillation frequency:[Delta]m[sub s]
Book Synopsis 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 by :
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.
Book Synopsis Preliminary Measurements of the Time Dependence of B{sub D}° - {bar B}{sub D}° Mixing with Kaon and Charge Dipole Tags by :
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.
Book Synopsis Time Dependent B0s - Anti-B0s Mixing Using Inclusive and Semileptonic B Decays at SLD. by :
Download or read book Time Dependent B0s - Anti-B0s Mixing Using Inclusive and Semileptonic B Decays at SLD. written by and published by . This book was released on 2000 with total page 5 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 400,000 hadronic Z° decays collected by the SLD experiment at the SLC between 1996 and 1998. 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 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}
Book Synopsis Time Dependent B{sub S}° - {bar B}{sub S}° Mixing Using Inclusive and Semileptonic B{sup S} Decays at SLD. by :
Download or read book Time Dependent B{sub S}° - {bar B}{sub S}° Mixing Using Inclusive and Semileptonic B{sup S} Decays at SLD. written by and published by . This book was released on 1998 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors set a preliminary 95% C.L. exclusion on the oscillation frequency of B{sub s}°-{anti B}{sub s}° mixing using a sample of 250,000 hadronic Z° decays collected by the SLD experiment at the SLC between January 1996 and March 1998. The analyses determine the b-hadron flavor at production by exploiting the large forward-backward asymmetry of polarized Z° 2!b{anti 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 topological technique, and separation between B{sub s}° and {anti B}{sub s}° decays exploits the B{sub s}° 2!D{sub s}− cascade charge structure. The other analysis selects semileptonic decays reconstructed by intersecting a lepton with he trajectory of a topologically reconstructed D meson. The two analyses are combined to exclude the following values of the B{sub s}°-{anti B}{sub s}° mixing oscillation frequency: [Delta]m{sub s}
Book Synopsis Measurement of Time Dependent B(D)0 Anti-B(D)0 Mixing at SLD. by :
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].
Book Synopsis Measurement of Time Dependent B(D)0 Anti-B(D)0 Mixing at SLD. by : Ming Xiong Liu
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}.
Book Synopsis Time Dependent B° - Bar-B° Mixing at SLD. by :
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}
Book Synopsis Time Dependent B[sup 0] - Bar-B[sup 0] Mixing at SLD. by :
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]
Book Synopsis 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 by :
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.
Book Synopsis 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] by :
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.
Book Synopsis Time Dependent B{sub S}° - {bar B}{sub S}° Oscillations Using Exclusively Reconstructed D{sub S} Decays at SLD. by :
Download or read book Time Dependent B{sub S}° - {bar B}{sub S}° Oscillations Using Exclusively Reconstructed D{sub S} Decays at SLD. written by and published by . This book was released on 2000 with total page 5 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 400,000 hadronic Z° decays collected by the SLD experiment at the SLC during the 1996-98 run. In this analysis, B{sub s}° mesons are partially reconstructed by combining a fully reconstructed D{sub s} with other B{sub s}° decay tracks. The D{sub s} decays are reconstructed via the [phi][pi] and K*K channels. The b-hadron flavor at production is determined by exploiting the large forward-backward asymmetry of polarized Z° 2!b{bar b} decays as well as information from the hemisphere opposite to the reconstructed B decay. The flavor of the B{sub s}° at the decay vertex is determined by the charge of the D{sub s}. A total of 361 candidates passed the final event selection cuts. This analysis excludes the following values of the B{sub s}°-{bar B}{sub s}° mixing oscillation frequency: [Delta]m{sub s}
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