Measurement of the Polarization in the Decay B[sup 0] [yields] J/[psi]K[sup *0] in [bar P]p Collisions at [radical] PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
This paper reports on the measurement of the polarization in the decay B[sup o] [yields] J/[psi]K[sup *o] using data collected at the collider Detector at Fermilab in [bar p]p collisions at [radical]s = 1.8 TeV. B[sup O] mesons were reconstructed through the decay chain B[sup o] [yields] J/[psi]K[sup *o], J/[psi] [yields] [mu][sup +][mu][sup [minus]], K[sup *o] [yields] K[sup +][pi][sup [minus]]. A sample of 50 [plus-minus] 11 events was used in the measurement, yielding the result [Gamma][sub L]/[Gamma] = 0.66 [plus-minus] 0.10 (stat) [sub [minus]]0.10 [sup +0.08] (sys).
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
This paper reports on the measurement of the polarization in the decay B[sup o] [yields] J/[psi]K[sup *o] using data collected at the collider Detector at Fermilab in [bar p]p collisions at [radical]s = 1.8 TeV. B[sup O] mesons were reconstructed through the decay chain B[sup o] [yields] J/[psi]K[sup *o], J/[psi] [yields] [mu][sup +][mu][sup [minus]], K[sup *o] [yields] K[sup +][pi][sup [minus]]. A sample of 50 [plus-minus] 11 events was used in the measurement, yielding the result [Gamma][sub L]/[Gamma] = 0.66 [plus-minus] 0.10 (stat) [sub [minus]]0.10 [sup +0.08] (sys).
Author: Publisher: ISBN: Category : Languages : en Pages : 10
Book Description
This paper reports on the measurement of the polarization in the decay B{sup o} → J/?K{sup *o} using data collected at the collider Detector at Fermilab in {bar p}p collisions at √s = 1.8 TeV. B{sup O} mesons were reconstructed through the decay chain B{sup o} → J/?K{sup *o}, J/? →??−, K{sup *o} → K+?−. A sample of 50 ± 11 events was used in the measurement, yielding the result?{sub L}/? = 0.66 ± 0.10 (stat) −0.10 {sup +0.08} (sys).
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The authors report on a measurement of the longitudinal polarization fraction in the decay B[sup 0][yields] J/[psi]K*[sup 0] using data collected with the Collider Detector at Fermilab. B[sup 0] mesons are reconstructed through the decay chain B[sup 0][yields] J/[psi] K*[sup 0], J/[psi][yields][mu][sup+][mu][sup[minus]], K*[sup 0][yields] K[sup+][pi][sup[minus]]. A sample of 65[+-] 10 events is used to obtain the result[Lambda][sub L]/[Lambda]= 0.65[+-] 0.10 (stat)[+-] 0.04 (sys). The first measurement of[Lambda][sub L]/[Lambda] in the decay B[sub s][sup 0][yields] J/[psi][phi] is also presented.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
We report measurements of the polarization of W bosons from top-quark decays using 2.7 fb−1 of p{bar p} collisions collected by the CDF II detector. Assuming a top-quark mass of 175 GeV/c2, three measurements are performed. A simultaneous measurement of the fraction of longitudinal (f0) and right-handed (f+) W bosons yields the model-independent results f0 = 0.88 ± 0.11(stat) ± 0.06(syst) and f+ = -0.15 ± 0.07(stat) ± 0.06(syst) with a correlation coefficient of -0.59. A measurement of f0 (f+) constraining f+ (f0) to its standard model value of 0.0 (0.7) yields f0 = 0.70 ± 0.07(stat) ± 0.04(syst) (f+ = 0.01 ± 0.02(stat) ± 0.05(syst)). All these results are consistent with standard model expectations.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A measurement of the polarization of the W boson from top quark decay is an excellent test of the V-A form of the charged-current weak interaction in the standard model. Since the longitudinal W boson is intimately related to the electroweak symmetry breaking mechanism, and the standard model gives a specific prediction for the fraction of longitudinal W bosons from top decays, it is of particular interest for study. This thesis presents a measurement of W boson polarization in top quark decay through an analysis of the cos [theta]* distribution in the lepton-plus-jets channel of t[bar t] candidate events from p[bar p] collisions at [radical]s = 1.96 TeV. This measurement uses an integrated luminosity of [approx]162 pb[sup -1] of data collected with the CDF Run II detector, resulting in 31 t[bar t] candidate events with at least one identified b jet. Using a binned likelihood fit to the cos [theta]* distribution from the t[bar t] candidate events found in this sample, the fraction of W bosons with longitudinal polarization is determined to be F[sub 0] = 0.99[sub -0.35][sup +0.29](stat.) [+-] 0.19(syst.), F[sub 0]> 0.33 [at] 95% CL. This result is consistent with the standard model prediction, given a top quark mass of 174.3 GeV/c[sup 2], of F[sub 0] = 0.701 [+-] 0.012.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
We measure the?{sub b}° lifetime in the fully reconstructed decay?{sub b}° → J/??° using 10.4 fb−1 of p{bar p} collisions collected with the D0 detector at √s = 1.96 TeV. The lifetime of the topologically similar decay channel B° → J/? K{sub S}° is also measured. We obtain? (?{sub b}°) = 1.303 ± 0.075 (stat.) ± 0.035 (syst.) ps and? (B°) = 1.508 ± 0.025 (stat.) ± 0.043 (syst.) ps. Using these measurements, we determine the lifetime ratio of? (?{sub b}°)/? (B°) = 0.864 ± 0.052 (stat.) ± 0.033 (syst.).
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Author: ![Measurement of the Polarization in the Decays B[sup 0][yields] J/[psi]K*[sup 0] and B[sub S][sup 0][yields] J/[psi][phi]. PDF](https://books.google.com/books/content/images/frontcover/iifADAEACAAJ?fife=w80-h100)
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Author: F. Abe
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Author: Trevor Neil Vickey![Measurement of The?_{b}{̂0} Lifetime in the Exclusive Decay?_{b}{̂0}→J/???{0} in Pp[over ̄] Collisions at Sqrt[s] PDF](https://books.google.com/books/content/images/frontcover/0ovLwgEACAAJ?fife=w80-h100)
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