Measurement Of The B To J Psi X Inclusive Cross Section At The Collider Detector At Fermilab PDF Download
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Release | : 2004 |
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Download Measurement of the $B \to J/\psi X$ Inclusive Cross-section at the Collider Detector at Fermilab Book in PDF, ePub and Kindle
The Collider Detector at Fermilab (CDF) is a multi-purpose detector designed to study proton-antiproton collisions at center-of-mass energies of 1.96 TeV/c2. One of the most importatn components of CDF is the silicon tracking detector. A detailed description of the testing and construction of the CDF silicon tracker is presented. Measurements of the tracking efficiency of the completed detector are also provided. Using 36 pb−1 of the J/[psi] data sample collected by CDF between February and October 2002, the inclusive B → J/[psi] X cross-section is measured in p{bar p} interactions at √s = 1.96 TeV/c2. The fraction of J/[psi] events arising from the decay of b hadrons is extracted using an unbinned maximum likelihood fit to the decay length of the J/[psi] candidates. The p{sub T} dependent differential cross section for inclusive B → J/[psi] X events with rapidity.
Author | : Simon Waschke |
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Total Pages | : 243 |
Release | : 2004 |
Genre | : Nuclear track detectors |
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Download Measurement of the B - J/psi X Inclusive Cross-section at the Collider Detector at Fermilab Book in PDF, ePub and Kindle
Author | : Hans Wenzel |
Publisher | : LAP Lambert Academic Publishing |
Total Pages | : 136 |
Release | : 2010-11 |
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ISBN | : 9783843367356 |
Download Measuring the B-Lifetime Using Inclusive Jpsi at Cdf Book in PDF, ePub and Kindle
This dissertation describes the measurement of the average B hadron lifetime using a high statistics sample of B--> J/psi X decays produced in proton antiproton collisions at a center of mass energy of 1.8 TeV at the Fermilab Tevatron. The integrated luminosity of the sample is 10.1 pb-1 recorded with the Collider Detector at Fermilab (CDF). In this analysis the decay vertex of the decay J/psi -->mu^+ mu^-$ as reconstructed by a silicon vertex detector is used to extract the lifetime from the data. We find the following value for the average b hadron lifetime: [ tau_{B} = 1.46 pm 0.06; (stat.); pm 0.06; (syst.); ps] This is the first measurement of the b-hadron lifetime at a hadron collider. It demonstrates that it is possible to access the large b-quark production cross section in $poverline{p}$ collisions and to achieve high statistics even in modes which have small product branching ratios as in this case: $BR(Brightarrow J/psi X) cdot BR(J/psi rightarrow mu^+ mu^-) = 7.7 times 10^{-4}$.
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Total Pages | : 5 |
Release | : 1992 |
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Download Inclusive J/[psi], [psi](2S) and B-quark Production in [bar P]p Collisions at [radical] Book in PDF, ePub and Kindle
Inclusive J/[psi] and [psi](2S) production has been studied in [bar p]p collisions at [radical]s = 1.8 TeV using the Collider Detector at Fermilab. The products of production cross section times branching fraction have been measured as functions of P[sub T] for J/[psi]([psi](2S)) [yields] [mu][sup +][mu][sup [minus]] in the kinematic range P[sub T][sup J/[psi]([psi](2S))]> 6 GeV/c and [vert bar][eta][sup J/[psi]([psi](2S))[vert bar]] [le] 0.5. The products of the integrated cross section times branching fraction are calculated and used to obtain an inclusive b-quark production cross section.
Author | : Joseph Robert Steele |
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Total Pages | : 138 |
Release | : 2000 |
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Download Inclusive Cross Section of J/psi Particles in the Far Forward Direction in Proton-antiproton Collisions at Center of Mass Energy Equal to 1.8 TeV Book in PDF, ePub and Kindle
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Total Pages | : 994 |
Release | : 1995 |
Genre | : Aeronautics |
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Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
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Total Pages | : 131 |
Release | : 1993 |
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Download Measurement of the Inclusive B-Lifetime Using $\rm {J/\psi}$'s at the CDF Experiment Book in PDF, ePub and Kindle
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Total Pages | : 123 |
Release | : 2006 |
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Download Measurement of J/psi Meson and B-hadron Production Cross Section at Sqrt(s) Book in PDF, ePub and Kindle
A new measurement of the inclusive and differential production cross sections of J/[psi] mesons and b-hadrons in proton-antiproton collisions at √s = 1960 GeV is presented. The data correspond to an integrated luminosity of 39.7 pb−1 collected by the CDF Run II detector. The integrated cross section for inclusive J/[psi] production for all transverse momenta from 0 to 20 GeV/c in the rapidity range
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Total Pages | : 56 |
Release | : 2004 |
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Download B Physics Book in PDF, ePub and Kindle
The authors present a new measurement of the inclusive and differential production cross sections of J/[psi] mesons and b-hadrons in proton-antiproton collisions at √s = 1960 GeV. The data correspond to an integrated luminosity of 39.7 pb−1 collected by the CDF Run II detector. They find the integrated cross section for inclusive J/[psi] production for all transverse momenta from 0 to 20 GeV/c in the rapidity range
Author | : Julio B. González-Atavales |
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Total Pages | : 282 |
Release | : 1995 |
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Download Measurement of the Ratio BR(B+-->J/[psi]K+)/BR(B0-->J/[psi]K0) at the Collider Detector at Fermilab Book in PDF, ePub and Kindle