Measurement Of B Sup 0 Bbar Sup 0 Right Arrow J Psi K 0 Over S Decay Asymmetry Using Same Side B Flavor Tagging

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Measurement Of B Sup 0 Bbar Sup 0 Right Arrow J Psi K 0 Over S Decay Asymmetry Using Same Side B Flavor Tagging

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Author :
language : en
Publisher:
Release Date : 2000

Measurement Of B Sup 0 Bbar Sup 0 Right Arrow J Psi K 0 Over S Decay Asymmetry Using Same Side B Flavor Tagging written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.

We present a measurement of the time-dependent asymmetry in the rate for [anti B][sup 0] versus B[sup 0] decays to J/[psi]K[sup 0][sub s]. The data sample consists of 198 [+-] 17 B[sup 0]/[anti B][sup 0] decays collected by the CDF detector in p[anti p] collisions at the Fermilab Tevatron, where the initial b flavor has been determined by a same-side flavor tagging technique. This asymmetry is interpreted in the Standard Model as a measurement of the CP-violation parameter sin(2[beta]). Our analysis results in sin(2[beta]) = 1:8 [+-] 1:1(stat) [+-] 0:3(syst).

Measurement Of B Bbar Right Arrow J Psi K 0 Over S Decay Asymmetry Using Same Side B Flavor Tagging

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language : en
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Release Date : 1998

Measurement Of B Bbar Right Arrow J Psi K 0 Over S Decay Asymmetry Using Same Side B Flavor Tagging written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.

We present a measurement of the time-dependent asymmetry in the rate for {anti B}° versus B° decays to J/[psi]K°{sub s}. The data sample consists of 198 ± 17 B°/{anti B}° decays collected by the CDF detector in p{anti p} collisions at the Fermilab Tevatron, where the initial b flavor has been determined by a same-side flavor tagging technique. This asymmetry is interpreted in the Standard Model as a measurement of the CP-violation parameter sin(2[beta]). Our analysis results in sin(2[beta]) = 1:8 ± 1:1(stat) ± 0:3(syst).

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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language : en
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Release Date : 2000

Measurements Of The Cp Violation Parameter Sin 2 Beta In B Superscipt 0 Right Arrow J Psi K 0 Over S Decays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.

In the 110 pb[sup -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 Ratio Of Decay Amplitudes For B0bar J Psi K 0 And B0 J Psi K 0

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language : en
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Release Date : 2004

Measurement Of The Ratio Of Decay Amplitudes For B0bar J Psi K 0 And B0 J Psi K 0 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

We have measured the time-dependent decay rate for the process B [yields] J/[psi] K*[sup 0](892) in a sample of about 88 million [Upsilon](4S) [yields] B[bar B] decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. In this sample we study flavor-tagged events in which one neutral B meson is reconstructed in the J/[psi]K*[sup 0] or J/[psi] [bar K]*[sup 0] final state. We measure the coefficients of the cosine and sine terms in the time-dependent asymmetries for J/[psi]K*[sup 0] and J/[psi][bar K]*[sup 0], find them to be consistent with the Standard Model expectations, and set upper limits at 90% C.L. on the decay amplitude ratios A([bar B][sup 0] [yields] J/[psi]K*[sup 0])/A(B[sup 0] [yields] J/[psi]K*[sup 0])

Measurement Of The Cp Asymmetry Parameter Sin 2 Beta At Cdf

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language : en
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Release Date : 2000

Measurement Of The Cp Asymmetry Parameter Sin 2 Beta At Cdf written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.

We present a measurement of the time-dependent asymmetry in the rate for [anti]B[sup 0][sub d] versus B[sup 0][sub d] decays to J/[psi] K[sup 0][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[sup 0][sub d]/[anti B][sup 0][sub d] decays were observed in p[anti p] collisions at ps = 1:8 TeV by the CDF detector at the Fermilab Tevatron. The initial b-flavor is determined by a same side avor tagging technique. Our analysis results in sin(2[beta]) = 1:8 [+-] 1:1(stat) [+-] 0:3(syst).

A Study Of Time Dependent Cp Violating Asymmetries And Flavor Oscillations In Neutral B Decays At The Upsilon 4s

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language : en
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Release Date : 2002

A Study Of Time Dependent Cp Violating Asymmetries And Flavor Oscillations In Neutral B Decays At The Upsilon 4s written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.

We present a measurement of time-dependent CP-violating asymmetries in neutral B meson decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. The data sample consists of 29.7 fb[sup -1] recorded at the[Upsilon](4S) resonance and 3.9 fb[sup -1] off-resonance. One of the neutral B mesons, which are produced in pairs at the[Upsilon](4S), is fully reconstructed in the CP decay modes J/[psi] K[sub S][sup 0], [psi](2S) K[sub S][sup 0], [chi][sub c1] K[sub S][sup 0], J/[psi] K*[sup 0] (K*[sup 0][yields] K[sub S][sup 0][pi][sup 0]) and J/[psi] K[sub L][sup 0], or in flavor-eigenstate modes involving D(*)[pi]/[rho]/[sub 1] and J/[psi] K*[sup 0] (K*[sup 0][yields] K[sup+][pi][sup -]). The flavor of the other neutral B meson is tagged at the time of its decay, mainly with the charge of identified leptons and kaons. A neural network tagging algorithm is used to recover events without a clear lepton or kaon tag. The proper time elapsed between the decays is determined by measuring the distance between the decay vertices. Wrong-tag probabilities, the time-difference resolution function, and the B[sup 0]-[bar B][sup 0] oscillation frequency[Delta]m[sub d]are measured with a sample of about 6350 fully-reconstructed B[sup 0] decays in hadronic flavor-eigenstate modes. A maximum-likelihood fit to this flavor eigenstate sample finds[Delta]m[sub d]= 0.516[+-] 0.016 (stat)[+-] 0.010 (syst) ps[sup -1]. The value of the asymmetry amplitude sin2[beta] is determined from a simultaneous maximum-likelihood fit to the time-difference distribution of the flavor-eigenstate sample and about 642 tagged B[sup 0] decays in the CP-eigenstate modes. We find sin2[beta]= 0.59[+-] 0.14 (stat)[+-] 0.05 (syst), demonstrating that CP violation exists in the neutral B meson system. We also determine the value of the CP violation parameter[lambda]= 0.93[+-] 0.09 (stat)[+-] 0.03 (syst), which is consistent with the expectation of[lambda]= 1 for no direct CP violation.

John Cyclos Die Kunst Des Schlittschuhfahrens Mit Deutlichen Anweisungen Zur Erlernung Der Schwierigsten Und Grasi Sesten Bewegungen Zweite Auflage Mit Tafeln

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language : en
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Release Date : 1858

John Cyclos Die Kunst Des Schlittschuhfahrens Mit Deutlichen Anweisungen Zur Erlernung Der Schwierigsten Und Grasi Sesten Bewegungen Zweite Auflage Mit Tafeln written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1858 with categories.

Observation Of The Decay B Jpsi Eta K And Search For The X 3872 Jpsi Eta

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language : en
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Release Date : 2004

Observation Of The Decay B Jpsi Eta K And Search For The X 3872 Jpsi Eta written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

The authors report the observation of the B meson decay B[sup [+-]] [yields] J/[psi][eta]K[sup [+-]] and evidence for the decay B[sup 0] [yields] J/[psi][eta]K[sub S][sup 0], using 90 million B[bar B] events collected at the [Upsilon](4S) resonance with the BABAR detector at the PEP-II e[sup +]e[sup -] asymmetric-energy storage ring. They obtain branching fractions of [Beta](B[sup [+-]] [yields] J/[psi][eta]K[sup [+-]]) = (10.8 [+-] 2.3(stat.) [+-] 2.4(syst.)) x 10[sup -5] and [Beta](B[sup 0] [yields] J/[psi][eta]K[sub S][sup 0]) = (8.4 [+-] 2.6(stat.) [+-] 2.7(syst.)) x 10[sup -5]. They search for the new narrow mass state, the X(3872), recently reported by the Belle Collaboration, in the decay B[sup [+-]] [yields] X(3872)K[sup [+-]], X(3872) [yields] J/[psi][eta] and determine an upper limit of [Beta](B[sup [+-]] [yields] X(3872)K[sup [+-]]) [yields] (J/[psi][eta]K[sup [+-]])

B Sup Degree Sub D Mixing And Cp Violation Measurements At The Tevatron

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language : en
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Release Date : 2001

B Sup Degree Sub D Mixing And Cp Violation Measurements At The Tevatron written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

The authors present six time-dependent B[sub d][sup 0] 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)[sup[minus]1]. They also present a measurement of the CP-violating asymmetry sin (2[beta]) using a sample of B[sup 0]/[bar B][sup 0][r-arrow] J/[psi]K[sub s][sup 0] decays and report sin(2[beta])= .79[sub[minus].44][sup+.41].

Rare B Decays To States Containing A J Psi Meson

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language : en
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Release Date : 2003

Rare B Decays To States Containing A J Psi Meson written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

The authors report a study of the B meson decays, B[sup+][yields] J/[psi][phi]K[sup+], B[sup 0][yields] J/[psi][phi]K[sub S][sup 0], B[sup 0][yields] J/[psi][phi], B[sup 0][yields] J/[psi][eta] and B[sup 0][yields] J/[psi][eta][prime] using 56 million B[bar B] events collected at the[Upsilon](4S) resonance with the BABAR detector at the PEP-II e[sup+]e[sup -] asymmetric-energy storage ring. They measure the branching fractions[Beta](B[sup+][yields] J/[psi][phi]K[sup+])= (4.4[+-] 1.4(stat)[+-] 0.5(syst)) x 10[sup -5] and[Beta](B[sup 0][yields] J/[psi][phi]K[sub S][sup 0])= (5.1[+-] 1.9(stat)[+-] 0.5(syst)) x 10[sup -5], and set upper limits at 90% confidence level for the branching fractions[Beta](B[sup 0][yields] J/[psi][phi])