Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B Bbar Mixing In P Bar P Collisions
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Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B Bbar Mixing In P Pbar Collisions
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Author :
language : en
Publisher:
Release Date : 1999
Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B Bbar Mixing In P Pbar Collisions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
We present a study of time dependent B°-{anti B}° mixing in p{anti p} collisions at 1.8 TeV using 110 pb−1 collected with the CDF detector at the Fermilab Tevatron Collider. B mesons are partially reconstructed using the semileptonic decays B°-->lD{sup (*)-}X and B-->l+{anti D}°X (and their charge conjugates). B meson-charged pion correlations are used in order to determine the flavor of the B meson at t=0. Such correlations are expected to arise from pions produced in the fragmentation chain and also from B{sup **} decays. We measure the efficiency and purity of this flavor tagging method for both charged and neutral B mesons.
Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B Bbar Mixing In P Bar P Collisions
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Author :
language : en
Publisher:
Release Date : 1996
Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B Bbar Mixing In P Bar P Collisions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
We present evidence for charge correlations of {ital B} mesons with charged particles produced in {ital p{anti p}} Collisions at 1.8 TeV. Such correlations are expected to arise from pious produced in the fragmentation chain and from {ital B}{sup **} decays. We measure the efficiency and purity of this flavor tagging method for both charged and neutral {ital B} mesons. We apply these correlations to {ital B} mesons reconstructed in 110 pb−1 of data collected with the CDF detector at the Fermilab Tevatron Collider. {ital B} mesons are either partially reconstructed, using the semileptonic decays {ital B}° 2!{ital l}{ital D}{sup (*)-}{ital X} and {ital B} 2!{ital l}+{ital {anti D}X}, or fully reconstructed, using the decay modes {ital B}° 2!{ital J/{Psi}K{sup *0}} and {ital B}+ 2!{ital J/{Psi}K+}. Application of this new flavor tagging method to neutral {ital B} mesons yields a measurement of the frequency of the oscillation {ital B}° 2!{ital {anti B}}°. We obtain [Delta]{ital m{sub d}} = 0.446 ± 0.057{sup +0.034}{sub -0.031}.
Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B Sup 0 Bbar Sup 0 Mixing In P Pbar Collisions
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Author :
language : en
Publisher:
Release Date : 1999
Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B Sup 0 Bbar Sup 0 Mixing In P Pbar Collisions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
We present a study of time dependent B°-{anti B}° mixing in p{anti p} collisions at 1.8 TeV using 110 pb−1 collected with the CDF detector at the Fermilab Tevatron Collider. B mesons are partially reconstructed using the semileptonic decays B°→lD{sup (*)-}X and B+??2192?l+{anti D}°X (and their charge conjugates). B meson-charged pion correlations are used in order to determine the flavor of the B meson at t=0. Such correlations are expected to arise from pions produced in the fragmentation chain and also from B{sup **} decays. We measure the efficiency and purity of this flavor tagging method for both charged and neutral B mesons.
Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B Sup 0 Bbar Sup 0 Mixing In P Bar P Collisions
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Author :
language : en
Publisher:
Release Date : 2001
Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B Sup 0 Bbar Sup 0 Mixing In P Bar P Collisions 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.
We present evidence for charge correlations of[ital B] mesons with charged particles produced in[ital p[anti p]] Collisions at 1.8 TeV. Such correlations are expected to arise from pious produced in the fragmentation chain and from[ital B][sup**] decays. We measure the efficiency and purity of this flavor tagging method for both charged and neutral[ital B] mesons. We apply these correlations to[ital B] mesons reconstructed in 110 pb[sup -1] of data collected with the CDF detector at the Fermilab Tevatron Collider.[ital B] mesons are either partially reconstructed, using the semileptonic decays[ital B][sup 0][yields][ital l][sup+][ital D][sup (*)-][ital X] and[ital B][sup+][yields][ital l][sup+][ital[anti D]X], or fully reconstructed, using the decay modes[ital B][sup 0][yields][ital J/[Psi]K[sup*0]] and[ital B][sup+][yields][ital J/[Psi]K[sup+]]. Application of this new flavor tagging method to neutral[ital B] mesons yields a measurement of the frequency of the oscillation[ital B][sup 0][yields][ital[anti B]][sup 0]. We obtain[Delta][ital m[sub d]]= 0.446[+-] 0.057[sup+0.034][sub -0.031].
Inis Atomindex
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Author :
language : en
Publisher:
Release Date : 1988
Inis Atomindex written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Nuclear energy categories.
Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B0b0 Mixing In Pp Collisions
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Author : Petar Maksimović
language : en
Publisher:
Release Date : 1998
Observation Of Pi B Meson Charge Flavor Correlations And Measurement Of Time Dependent B0b0 Mixing In Pp Collisions written by Petar Maksimović 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.
An Orangeman
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Author :
language : en
Publisher:
Release Date : 1799
An Orangeman written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1799 with categories.
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
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Author :
language : en
Publisher:
Release Date : 2001
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
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.
Measurements Of Cp Violation Mixing And Lifetimes Of B Mesons With The Babar Detector
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Author :
language : en
Publisher:
Release Date : 2002
Measurements Of Cp Violation Mixing And Lifetimes Of B Mesons With The Babar Detector 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 report the observation of CP violation in the B[sup 0] meson system. Using a novel technique for time-dependent measurements, we measure a non-zero value for the CP-violating amplitude sin2[beta] at the 4.1[sigma] level. We also report on precision measurements of the B[sup+] and B[sup 0] lifetimes and the B[sup 0][bar B][sup 0] mixing frequency[Delta]m[sub d] obtained with the same technique, and on a first measurement of the time-dependent CP-violating amplitude in B[sup 0][yields][pi][sup+][sup -] decays.
Study Of Charged Particle Species Produced In Association With B0 B And Bs Mesons In Proton Anti Proton Collisions At S 1 2
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Author : Denys Usynin
language : en
Publisher:
Release Date : 2005
Study Of Charged Particle Species Produced In Association With B0 B And Bs Mesons In Proton Anti Proton Collisions At S 1 2 written by Denys Usynin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
The authors study the yields of charged kaons, charged pions, and protons produced in association with B mesons produced in proton-antiproton collisions at center of mass energy 1960 GeV using 355 pb{sup -1} of data collected with the CDF detector at the Fermilab Tevatron. This is the first reported measurements of these yields at a hadron collider. The B mesons are reconstructed using their semileptonic decays: B{sup 0} {yields} {ell}{sup +}D{sup -}X, D{sup -} {yields} K{sup +}{pi}{sup -}{pi}{sup -}; B{sup 0} {yields} {ell}{sup +}D*{sup -}X, D*{sup -} {yields} {pi}{sup -}{bar D}{sup 0}, {bar D}{sup 0} {yields} K{sup +}{pi}{sup -}; B{sup +} {yields} {ell}{sup +}{bar D}{sup 0}X, {bar D}{sup 0} {yields} K{sup +}{pi}{sup -}; B{sub s}{yields}{ell}{sup +}D{sub s}{sup -}X, D{sub s}{sup -} {yields} {pi}{sup -}{phi}, {phi} {yields} K{sup +}K{sup -}. The K, {pi}, and p are identified using the Time of Flight detector (TOF), the CDF spectrometer, and the specific ionization (dE/dx) measured in the central drift chamber (COT). The fraction of charged kaons produced in association with {bar B}{sub s}{sup 0} mesons is found to be larger than the fraction produced in association with the {bar B}{sup 0} and B{sup -} mesons, as expected from naive models of heavy quark hadronization to mesons. The particle species yields are found to be in qualitative agreement with simulation of B meson production in hadron collisions from the PYTHIA Monte Carlo, although the yield of kaons around {bar B}{sub s}{sup 0} mesons is found to be larger in the simulation when compared to the data. These studies are important for understanding methods of identifying the flavor of {bar B}{sub s}{sup 0} mesons in measurement of {bar B}{sub s}{sup 0} flavor oscillations and charge conjugation-parity (CP) violation in {bar B}{sub s}{sup 0} meson decays.