Measurement Of The B0 Lifetime In The Exclusive Decay B0 J 0 In Ppover Collisions At Sqrts PDF Download
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Release | : 2012 |
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Download Measurement of The?_{b}{̂0} Lifetime in the Exclusive Decay?_{b}{̂0}→J/???{0} in Pp[over ̄] Collisions at Sqrt[s] Book in PDF, ePub and Kindle
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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Download Measurement of $b$ Hadron Lifetimes in Exclusive Decays Containing a $J/\psi$ in $p-̂$ Pbar Collisions at $\sqrt{s} Book in PDF, ePub and Kindle
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Total Pages | : 130 |
Release | : 2012 |
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Download Measurement of the $\Lambda^0_b$ Lifetime in the Exclusive Decay $\Lambda^0_b \rightarrow J/\psi \Lambda^0$ with the \D0~detector Book in PDF, ePub and Kindle
In this work we report a measurement of the [Lambda]0b baryon lifetime using the exclusive decay [Lambda]0b→ J/ [Psi][Lambda]0. The B0 meson lifetime is also measured in the topologically similar channel B0→ J/ K0S , which provides a crosscheck of the measurement procedure, and allows a direct determination of the ratio of the [Lambda]0b and the B0 lifetimes. The data used in this analysis were collected with the DØ detector during the complete Run II of the Fermilab Tevatron Collider, from 2002 to 2011, and correspond to an integrated luminosity of 10.4 fb-1 of proton-antiproton collisions at a center of mass energy √s = 1.96 TeV. We obtain [tau] ([Lambda]0b ) = 1.303 ± 0.075 (stat.) ± 0.035 (syst.) ps, [tau] (B0) = 1.508±0.025 (stat.)±0.043 (syst.) ps and [tau] ([Lambda]0b )/[tau] (B0) = 0.864± 0.052 (stat.)±0.033 (syst.). These measurements supersede previous results of the DØ Collaboration using the same decay channels. Our measurement of the lifetime ratio is in excellent agreement with theoretical predictions and compatible with the current world-average, but differs with the latest measurement of the CDF Collaboration in more than 2 standard deviations.
Author | : Amanda Jean Deisher |
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Total Pages | : 452 |
Release | : 2008 |
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Download A Precision Measurement of the B[subscript S] Lifetime in Pp̄ Collisions at [square Root]s Book in PDF, ePub and Kindle
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Total Pages | : 7 |
Release | : 2007 |
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Download Measurement of the Lambda(b) Lifetime in the Exclusive Decay Lambda(b) ---] J Book in PDF, ePub and Kindle
We have measured the?{sub b} lifetime using the exclusive decay?{sub b}→J/??, based on 1.2 fb−1 of data collected with the D0 detector during 2002-2006. From 171 reconstructed?{sub b} decays, where the J/? and? are identified via the decays J/??????????− and????????p?, we measured the?{sub b} lifetime to be?(?{sub b})=1.218{sub -0.115}{sup +0.130}(stat)±0.042(syst) ps. We also measured the B° lifetime in the decay B°→J/?(?+?−)K{sub S}°(?+?−) to be?(B°)=1.501{sub -0.074}{sup +0.078}(stat)±0.050(syst) ps, yielding a lifetime ratio of?(?{sub b})/?(B°)=0.811{sub -0.087}{sup +0.096}(stat)±0.034(syst =).
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Release | : 2003 |
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Download Measurement of the Average $B^{0}_{s}$ Lifetime in the Decay $B^{0}_{s} \to J/\Psi\Phi$ Book in PDF, ePub and Kindle
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Release | : 2001 |
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Download Measurement of the B[sup+] and B[sup 0] Lifetimes at CDF. Book in PDF, ePub and Kindle
Two measurements of the lifetime of neutral and charged B mesons in p[bar p] collisions at[radical]s= 1.8 TeV by the CDF experiment are presented. The first relies on the study of exclusive decays of the type B[yields][psi] K, the second on semileptonic decays of a B meson into a D[degrees] or a D. The combined results are[tau](B[sup+])= 1.62[+-] 0.09 ps, [tau](B[sub 0])= 1.60[+-] 0.09 ps and[tau](B[sup+])/[tau](B[sup 0])= 1.00[+-] 0.07.
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Release | : 2016 |
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Download $B^{0}_{s}$ Lifetime Measurement in the CP-odd Decay Channel $B^{0}_{s} \to J/\psi\mbox{ }f_{0}(980)$ Book in PDF, ePub and Kindle
The lifetime of the $B^{0}_{s}$ meson is measured in the decay channel $B^{0}_{s} \to J/\psi\mbox{ }\pi^+ \pi^-$ with $880 \leq M_{\pi^+\pi^-} \leq 1080$ MeV/$c^2$, which is mainly a CP-odd state and dominated by the $f_{0}(980)$ resonance. In 10.4 fb$^{-1}$ of data collected with the D0 detector in Run II of the Tevatron, the lifetime of the $B^{0}_{s}$ meson is measured to be $\tau(B^{0}_{s}) = 1.70\pm 0.14 \mbox{ (stat)} \pm 0.05 \mbox{ (syst) ps}$. Neglecting CP violation in $B_s^0/\bar{B}_s^0$ mixing, the measurement can be translated into the width of the heavy mass eigenstate of the $B^0_s$, $\Gamma_H = 0.59 \pm 0.05 \mbox{ (stat)} \pm 0.02 \mbox{ (syst)} \mbox{ ps$^{-1}$}$.
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Release | : 2009 |
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Download Measurement of the Lambda_b Lifetime in Lambda_b -] Lambda_c+ Pi- Decays in P-pbar Collisions at Sqrt(s) Book in PDF, ePub and Kindle
We report a measurement of the lifetime of the?{sub b}° baryon in decays to the?{sub c}?− final state in a sample corresponding to 1.1 fb−1 collected in p{bar p} collisions at √s = 1.96 TeV by the CDF II detector at the Tevatron collider. Using a sample of about 3000 fully reconstructed?{sub b}° events we measure?(?{sub b}°) = 1.401 ± 0.046 (stat) ± 0.035 (syst) ps (corresponding to c?(?{sub b}°) = 420.1 ± 13.7 (stat) ± 10.6 (syst)?m, where c is the speed of light). The ratio of this result and the world average B° lifetime yields?(?{sub b}°)/?(B°) = 0.918 ± 0.038 (stat and syst), in good agreement with recent theoretical predictions.
Author | : Farrukh Azfar |
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Total Pages | : 176 |
Release | : 1995 |
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Download Measurement of the Lifetime of the B0s Meson Using the Exclusive Decay Mode B0s --> J/[psi Phi] Book in PDF, ePub and Kindle