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Languages : en
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Measurement of the CP Violation Parameter Sin(2[beta] in B° 2!/[psi] K{sub S}° Decays
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Languages : en
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Languages : en
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Measurement of the CP Violation Parameter Sin(2[beta] in B[sup 0][r-arrow]J/[psi] K[sub S][sup 0] Decays
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Languages : en
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A sample of[approximately] 400 B[sub d][sup 0]/[bar B][sub d][sup 0][r-arrow] J/[psi]K[sub s][sup 0] decays collected in[bar p]p collisions by the CDF detector is used to directly measure the CP-violation parameter sin (2[beta]). They find sin(2[beta])= 0.79[sub[minus]0.44][sup+ 0.41], favoring the standard model expectation of a large CP violation in this B[sup 0] decay mode.
Publisher:
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Languages : en
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Book Description
A sample of[approximately] 400 B[sub d][sup 0]/[bar B][sub d][sup 0][r-arrow] J/[psi]K[sub s][sup 0] decays collected in[bar p]p collisions by the CDF detector is used to directly measure the CP-violation parameter sin (2[beta]). They find sin(2[beta])= 0.79[sub[minus]0.44][sup+ 0.41], favoring the standard model expectation of a large CP violation in this B[sup 0] decay mode.
Measurements of the CP-violation Parameter Sin(2 Beta) in B{superscipt 0} {right Arrow} J/[psi]K{0 Over S} Decays
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Languages : en
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In the 110 pb−1 Run I data sample, using three complementary flavor-tagging algorithms CDF has made a new measurement of the CP-violating asymmetry sin(2[beta])=0.79{sup +0.41}{sub -0.44}, This corresponds to the limit sin(2[beta])>-0.08 at 95% confidence level. This result agrees well with predictions from indirect constraints based on fits of elements of the CKM matrix.
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Languages : en
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Book Description
In the 110 pb−1 Run I data sample, using three complementary flavor-tagging algorithms CDF has made a new measurement of the CP-violating asymmetry sin(2[beta])=0.79{sup +0.41}{sub -0.44}, This corresponds to the limit sin(2[beta])>-0.08 at 95% confidence level. This result agrees well with predictions from indirect constraints based on fits of elements of the CKM matrix.
Measurement of the Cp Violation Parameter Sin 2 Beta
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Languages : en
Pages : 5
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This thesis presents a measurement of the time-dependent asymmetry in the rate of {anti B}{sub d}° versus B{sub d}° decays to J/[psi]K{sub s}°. In the context of the Standard Model this is interpreted as a measurement of the CP violation parameter sin(2[beta]). A total of 198±17 B{sub d}°/{anti B}{sub d}° decays were observed in p{anti p} collisions at √s=1.8 TeV by the CDF detector at the Fermilab Tevatron. The initial B flavor (whether B° or {anti B}°) is determined by a same-side flavor tagging technique. The analysis results in sin(2[beta])=1.8±1.1(stat.)±0.3(syst.). This analysis demonstrates the feasibility of studying CP violation in the B°-{anti B}° system at a hadron collider. By applying the methods used in this analysis, future, higher-statistics experiments should be able to tightly constrain the parameters of the Standard Model.
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Languages : en
Pages : 5
Book Description
This thesis presents a measurement of the time-dependent asymmetry in the rate of {anti B}{sub d}° versus B{sub d}° decays to J/[psi]K{sub s}°. In the context of the Standard Model this is interpreted as a measurement of the CP violation parameter sin(2[beta]). A total of 198±17 B{sub d}°/{anti B}{sub d}° decays were observed in p{anti p} collisions at √s=1.8 TeV by the CDF detector at the Fermilab Tevatron. The initial B flavor (whether B° or {anti B}°) is determined by a same-side flavor tagging technique. The analysis results in sin(2[beta])=1.8±1.1(stat.)±0.3(syst.). This analysis demonstrates the feasibility of studying CP violation in the B°-{anti B}° system at a hadron collider. By applying the methods used in this analysis, future, higher-statistics experiments should be able to tightly constrain the parameters of the Standard Model.
Die Zauberflöte, opéra en deux actes de Wolfgang Amadeus Mozart. Théâtre du Châtelet
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Languages : en
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Measurement of CP Violation Parameters in B Quark Decays to Charm Anticharm Down Quarks, Exclusive Decays at the BABAR Experiment
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Languages : en
Pages : 5
Book Description
The BABAR experiment at SLAC provides an opportunity for measurement of CP violation in B decays. A measurement of time-dependent CP violating asymmetries using exclusive B meson decays where the b quark decays to c{bar c}d (including B° 2!D*D*− and B° 2!D*{sup ±}D{sup {-+}} decays) is presented here. This is the first measurement of CP violation in a mode sensitive to the Unitarity Triangle parameter sin2[beta] outside of decays containing charmonium. It provides a comparison to measurements of sin2[beta] using b 2!c{bar c}s, and permits an observation into potential new physics sources of CP violation, such as supersymmetry, via differences between these measurements and those of B° 2!J/[psi] K{sub S}° as statistics of reconstructed neutral B decays to D{sup (*)+} D{sup (*)-} increase. The measured value of the time-dependent CP violating asymmetries are: S = 0.38 ± 0.88(stat) ± 0.12(syst) and C = -0.30 ± 0.50(stat) ± 0.13(syst) for B° 2!D*− D; S = -0.43 ± 1.41(stat) ± 0.23(syst) and C = 0.53 ± 0.74(stat) ± 0.15(syst) for B° 2!D*+ D−; and S = -0.05 ± 0.45(stat) ± 0.05(syst) and C = 0.12 ± 0.30(stat) {+-} 0.05(syst) for B° 2!D*− D+; where S corresponds to CP violation in the interference of mixing and decay and C corresponds to CP violation in decay.
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Languages : en
Pages : 5
Book Description
The BABAR experiment at SLAC provides an opportunity for measurement of CP violation in B decays. A measurement of time-dependent CP violating asymmetries using exclusive B meson decays where the b quark decays to c{bar c}d (including B° 2!D*D*− and B° 2!D*{sup ±}D{sup {-+}} decays) is presented here. This is the first measurement of CP violation in a mode sensitive to the Unitarity Triangle parameter sin2[beta] outside of decays containing charmonium. It provides a comparison to measurements of sin2[beta] using b 2!c{bar c}s, and permits an observation into potential new physics sources of CP violation, such as supersymmetry, via differences between these measurements and those of B° 2!J/[psi] K{sub S}° as statistics of reconstructed neutral B decays to D{sup (*)+} D{sup (*)-} increase. The measured value of the time-dependent CP violating asymmetries are: S = 0.38 ± 0.88(stat) ± 0.12(syst) and C = -0.30 ± 0.50(stat) ± 0.13(syst) for B° 2!D*− D; S = -0.43 ± 1.41(stat) ± 0.23(syst) and C = 0.53 ± 0.74(stat) ± 0.15(syst) for B° 2!D*+ D−; and S = -0.05 ± 0.45(stat) ± 0.05(syst) and C = 0.12 ± 0.30(stat) {+-} 0.05(syst) for B° 2!D*− D+; where S corresponds to CP violation in the interference of mixing and decay and C corresponds to CP violation in decay.
Measurement of Sin2[beta] from J/[psi] K[sub S] Decays
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Languages : en
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The CP-violating parameter sin 2[beta] is directly measured using 110 pb[sup[minus]1] of data accumulated with the CDF detector at the Fermilab[anti p]p Tevatron collider operating at[radical]s= 1.8 TeV. The signal consists of 395[+-] 31 B[sub d][sup 0][r[underscore]arrow] J/[psi] K[sub s] events. Three tagging methods are used to identify the type of B meson at production (B[sub d][sup 0] or[anti B][sub d][sup 0]). From the CP asymmetry, sin 2[beta] is measured to be 0.79[sub[minus]0.44][sup+0.41], consistent with Standard Model predictions. Sin 2[beta] is in the interval 0[lt] sin2[beta][lt] 1 at the 93% confidence level.
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Languages : en
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Book Description
The CP-violating parameter sin 2[beta] is directly measured using 110 pb[sup[minus]1] of data accumulated with the CDF detector at the Fermilab[anti p]p Tevatron collider operating at[radical]s= 1.8 TeV. The signal consists of 395[+-] 31 B[sub d][sup 0][r[underscore]arrow] J/[psi] K[sub s] events. Three tagging methods are used to identify the type of B meson at production (B[sub d][sup 0] or[anti B][sub d][sup 0]). From the CP asymmetry, sin 2[beta] is measured to be 0.79[sub[minus]0.44][sup+0.41], consistent with Standard Model predictions. Sin 2[beta] is in the interval 0[lt] sin2[beta][lt] 1 at the 93% confidence level.
Measurement of the CP Violation Parameter Sin(2?) in B° →J/? K{sub S}° Decays
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Languages : en
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A sample of - 400 B{sub d}°/{bar B}{sub d}° → J/?K{sub s}° decays collected in {bar p}p collisions by the CDF detector is used to directly measure the CP-violation parameter sin (2?). They find sin(2?) = 0.79{sub -0.44}{sup + 0.41}, favoring the standard model expectation of a large CP violation in this B° decay mode.
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Languages : en
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Book Description
A sample of - 400 B{sub d}°/{bar B}{sub d}° → J/?K{sub s}° decays collected in {bar p}p collisions by the CDF detector is used to directly measure the CP-violation parameter sin (2?). They find sin(2?) = 0.79{sub -0.44}{sup + 0.41}, favoring the standard model expectation of a large CP violation in this B° decay mode.
Measurement of Direct CP Violation Parameters in $B\̂pm \to J/\psi K\̂pm$ and $B\̂pm \to J/\psi \pi\̂pm$ Decays with 10.4 Fb${̂-1}$ of Tevatron Data
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Languages : en
Pages : 7
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Languages : en
Pages : 7
Book Description
Measurement of the C P Violation Parameter Sin 2[beta]
Author: Kenneth Francis Kelley
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Languages : en
Pages : 267
Book Description
Publisher:
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Category :
Languages : en
Pages : 267
Book Description