Measurement Of The Lifetime Of The B0s Meson And The Width Difference In The B0s B 0s System In Pp Collisions At Square Root Of S

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Measurement Of The Lifetime Of The B0s Meson And The Width Difference In The B0s B 0s System In Pp Collisions At Square Root Of S

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Author : Kevin Alan Burkett
language : en
Publisher:
Release Date : 1997

Measurement Of The Lifetime Of The B0s Meson And The Width Difference In The B0s B 0s System In Pp Collisions At Square Root Of S written by Kevin Alan Burkett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.

A Precision Measurement Of The B Subscript S Lifetime In Pp Collisions At Square Root S

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Author : Amanda Jean Deisher
language : en
Publisher:
Release Date : 2008

A Precision Measurement Of The B Subscript S Lifetime In Pp Collisions At Square Root S written by Amanda Jean Deisher and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

Measurement Of The Neutral B Meson Lifetime And Branching Fraction At Square Root S

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Author : Dean Alan Hinshaw
language : en
Publisher:
Release Date : 1990

Measurement Of The Neutral B Meson Lifetime And Branching Fraction At Square Root S written by Dean Alan Hinshaw and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Branching ratios (Nuclear physics) categories.

Measurement Of Lifetime And Decay Width Difference In B0s J Psi Phi Decays

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Author :
language : en
Publisher:
Release Date : 2007

Measurement Of Lifetime And Decay Width Difference In B0s J Psi Phi 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 2007 with categories.

The authors measure the mean lifetime, [tau] = 2/([Lambda]{sub L} + [Lambda]{sub H}), and the decay-width difference, [Delta][Lambda] = [Lambda]{sub L} - [Lambda]{sub H}, of the light and heavy mass eigenstates of the B{sub s}° meson, B{sub sL}° and B{sub sH}°, in B{sub s}° → J/[psi][phi] decays using 1.7 fb−1 of data collected with the CDF II detector at the Fermilab Tevatron p{bar p} collider. Assuming CP conservation, a good approximation for the B{sub s}° system in the standard model, they obtain [Delta][Lambda] = 0.076{sub -0.063}{sup +0.059}(stat.) ± 0.006(syst.) ps−1 and [tau] = 1.52 ± 0.04(stat.) ± 0.02(syst.) ps, the most precise measurements to date. The constraints on the weak phase and [Delta][Lambda] are consistent with CP conservation.

Measurement Of The Lambda B 0 Lifetime In Pp Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2013

Measurement Of The Lambda B 0 Lifetime In Pp Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

Measurement Of The Lifetime Of The B Sup O Sub S Meson From D Sup Minus Sub S Ell Sup Plus Correlations

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Author :
language : en
Publisher:
Release Date : 2001

Measurement Of The Lifetime Of The B Sup O Sub S Meson From D Sup Minus Sub S Ell Sup Plus Correlations 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 lifetime of the B[sub s][sup 0] meson is measured using the semileptonic decay B[sub s][sup 0][r-arrow] D[sub s][sup[minus]]l[sup[plus]][nu]X. The data sample consists of approximately 110 pb[sup[minus]1] of p[ovr p] collisions at[radical]s= 1.8 TeV collected by the CDF detector at the Fermilab Tevatron collider. There are 254[plus-minus]21 D[sub s][sup[minus]]l[sup[plus]] signal events where the D[sub s][sup[plus]] is reconstructed through its decay mode D[sub s][sup[minus]][r-arrow][phi][pi][sup[minus]], [phi][r-arrow] K[sup[plus]]K[sup[minus]]. Using these events, the B[sub s][sup 0] meson lifetime is determined to be[tau](B[sub s][sup 0])[equals] 1.37[sup[plus]0.14][sub[minus]0.12](stat.)[plus-minus]0.04(syst.) ps. The B[sub s][sup 0] meson proper decay length distribution has been examined for a lifetime difference between the two CP eigenstates of the B[sub s][sup 0] meson, B[sub s][sup H] and B[sub s][sup L]. 12 refs., 3 figs., 1 tab.

Measurement Of The Lifetime Difference And Cp Violating Phase In B S J Psi Phi Decays

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Author :
language : en
Publisher:
Release Date : 2007

Measurement Of The Lifetime Difference And Cp Violating Phase In B S J Psi Phi 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 2007 with categories.

Over the past decades the current theoretical description, the Standard Model of elementary particle physics, was solidified by many measurements as the basic theory describing fundamental particles and their interactions. It is extremely successful in explaining the high-precision data collected by experiments so far. The Standard Model includes several intrinsic parameters which have to be measured in experiments. Independent analyses of different physical processes can constrain those parameters. By combining those measurements physicists might be sensitive to physics beyond the Standard Model. If they are inconsistent it allows to get a hint on the theory that might supersede the Standard Model. The goal of the analysis presented in this thesis is to measure some of these parameters in the B{sub s} meson system. The B{sub s} meson, consisting of an anti-b and s quark, is not a pure mass eigenstate, thus allowing a B{sub s} meson to oscillate into its antiparticle via weak interacting processes. This is a general feature of any neutral meson. The history of meson mixing measurements is more then 50 years old. It was first observed in the kaon system. The oscillation in the B{sub d} system was measured very precisely by the B factories, whereas the oscillation frequency of the B{sub s} was measured with more than 5[sigma] significance last year by CDF and first evidence for mixing in the D0 system was presented only this year.

A Measurement Of The Mass Of The B S Meson In Proton Antiproton Collision At The Square Root Of S 1 8 Tev

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Author : William Carl Westor
language : en
Publisher:
Release Date : 1994

A Measurement Of The Mass Of The B S Meson In Proton Antiproton Collision At The Square Root Of S 1 8 Tev written by William Carl Westor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.

Measurement Of The B 0 Lifetime In The Exclusive Decay B 0 J 0 In Pp Over Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2012

Measurement Of The B 0 Lifetime In The Exclusive Decay B 0 J 0 In Pp Over Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.

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.).

Measurement Of The Ratio Mathcal B Mathrm B 0 S To Mathrm J Psi Mathrm F 0 980 Mathcal B Mathrm B 0 S To Mathrm J Psi Phi 1020 In Pp Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2015

Measurement Of The Ratio Mathcal B Mathrm B 0 S To Mathrm J Psi Mathrm F 0 980 Mathcal B Mathrm B 0 S To Mathrm J Psi Phi 1020 In Pp Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.

The ratio $R_{\, \mathrm{f}_0 / \phi}$ of the branching fractions of the $\mathrm{B}^0_{s}$ meson to the CP-odd eigenstate $\mathrm{J}/\psi\, \mathrm{f}_0(980)$ and to $\mathrm{J}/\psi\, \phi(1020)$ is measured, where $\mathrm{J}/\psi \to \mu^+\mu^-$, $\mathrm{f}_0 \to \pi^+\pi^-$, and $\phi \to \mathrm{K}^+\mathrm{K}^-$. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7 TeV, collected by the CMS experiment, corresponding to an integrated luminosity of 5.3 fb$^{-1}$. The result is $R_{\, \mathrm{f}_0 / \phi} = 0.140 \pm 0.013 \pm 0.018$, where the first uncertainty is statistical and the second is systematic. This result is consistent with theoretical predictions and previous measurements of $R_{\, \mathrm{f}_0 / \phi}$. It is the most precise measurement of the ratio to date.