Measurement Of B Jet Shapes In Inclusive Jet Production In P Anti P Collisions At Su PDF Download
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Total Pages | : 22 |
Release | : 2008 |
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Download Measurement of B-jet Shapes in Inclusive Jet Production in P Anti-p Collisions at S**1/2 Book in PDF, ePub and Kindle
We present a measurement of the shapes of b-jets using 300 pb−1 of data obtained with the upgraded Collider Detector at Fermilab (CDF II) in p{bar p} collisions at center of mass energy √s = 1.96 TeV. This measurement covers a wide transverse momentum range, from 52 to 300 GeV/c. Samples of heavy-flavor enhanced jets together with inclusive jets are used to extract the average shapes of b-jets. The b-jets are expected to be broader than inclusive jets. Moreover, b-jets containing a single b-quark are expected to be narrower than those containing a b{bar b} pair from gluon splitting. The measured b-jet shapes are found to be significantly broader than expected from the pythia and HERWIG Monte Carlo simulations. This effect may arise from an underestimation of the fraction of b-jets originating from gluon splitting in these simulations.
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Total Pages | : 22 |
Release | : 2008 |
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Download Measurement of B-jet Shapes in Inclusive Jet Production in P Anti-p Collisions at S**ư Book in PDF, ePub and Kindle
We present a measurement of the shapes of b-jets using 300 pb−1 of data obtained with the upgraded Collider Detector at Fermilab (CDF II) in p{bar p} collisions at center of mass energy √s = 1.96 TeV. This measurement covers a wide transverse momentum range, from 52 to 300 GeV/c. Samples of heavy-flavor enhanced jets together with inclusive jets are used to extract the average shapes of b-jets. The b-jets are expected to be broader than inclusive jets. Moreover, b-jets containing a single b-quark are expected to be narrower than those containing a b{bar b} pair from gluon splitting. The measured b-jet shapes are found to be significantly broader than expected from the pythia and HERWIG Monte Carlo simulations. This effect may arise from an underestimation of the fraction of b-jets originating from gluon splitting in these simulations.
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Total Pages | : 31 |
Release | : 2005 |
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Download Study of Jet Shapes in Inclusive Jet Production in P Anti-p Collisions at S**(1/2) Book in PDF, ePub and Kindle
Author | : Shreyasi Acharya |
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Total Pages | : 0 |
Release | : 2022 |
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Download Measurement of Inclusive Charged-particle B-jet Production in Pp and P-Pb Collisions at √sNN Book in PDF, ePub and Kindle
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Total Pages | : 26 |
Release | : 2007 |
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Download Measurement of the Inclusive Jet Cross Section Using the K(T) Algorithm in P Anti-p Collisions at S**1/2 Book in PDF, ePub and Kindle
The authors report on measurements of the inclusive jet production cross section as a function of the jet transverse momentum in p{bar p} collisions at √s = 1.96 TeV, using the k{sub T} algorithm and a data sample corresponding to 1.0 fb−1 collected with the Collider Detector at Fermilab in Run II. The measurements are carried out in five different jet rapidity regions with
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Total Pages | : 7 |
Release | : 2008 |
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Download Measurement of the Inclusive Jet Cross-section in P Anti-p Collisions at S**91 Book in PDF, ePub and Kindle
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Total Pages | : 8 |
Release | : 2009 |
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Download First Measurement of the B-jet Cross Section in Events with a W Boson in P Anti-p Collisions at S**1/2 Book in PDF, ePub and Kindle
The cross section for jets from b quarks produced simultaneously with a W boson has been measured in p{bar p} collision data from 1.9 fb−1 of integrated luminosity recorded by the CDF II detector at the Tevatron. Jets consistent with the decay of long-lived hadrons are selected by identifying a displaced decay vertex. The invariant mass of the charged particle tracks associated with the vertex is sensitive to the flavor of the decaying hadron and is used to determine the fraction of jets from b-quark production. We measure a b-jet cross section of 2.74 ± 0.27(stat.) ± 0.42(syst.) pb in association with one flavor of leptonic W boson decay over a limited kinematic phase space.
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Total Pages | : 21 |
Release | : 2014 |
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Download Modification of Jet Shapes in PbPb Collisions at $\sqrt {s_{NN}} Book in PDF, ePub and Kindle
The first measurement of jet shapes, defined as the fractional transverse momentum radial distribution, for inclusive jets produced in heavy-ion collisions is presented. Data samples of PbPb and pp collisions, corresponding to integrated luminosities of 150 inverse microbarns and 5.3 inverse picobarns respectively, were collected at a nucleon-nucleon centre-of-mass energy of sqrt(s[NN]) = 2.76 TeV with the CMS detector at the LHC. The jets are reconstructed with the anti-kt algorithm with a distance parameter R=0.3, and the jet shapes are measured for charged particles with transverse momentum pt> 1 GeV. The jet shapes measured in PbPb collisions in different collision centralities are compared to reference distributions based on the pp data. A centrality-dependent modification of the jet shapes is observed in the more central PbPb collisions, indicating a redistribution of the energy inside the jet cone. This measurement provides information about the parton shower mechanism in the hot and dense medium produced in heavy-ion collisions.
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Total Pages | : 8 |
Release | : 2009 |
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Download First Measurement of the B-jet Cross Section in Events with a W Boson in P Anti-p Collisions at S**ư Book in PDF, ePub and Kindle
The cross section for jets from b quarks produced simultaneously with a W boson has been measured in p{bar p} collision data from 1.9 fb−1 of integrated luminosity recorded by the CDF II detector at the Tevatron. Jets consistent with the decay of long-lived hadrons are selected by identifying a displaced decay vertex. The invariant mass of the charged particle tracks associated with the vertex is sensitive to the flavor of the decaying hadron and is used to determine the fraction of jets from b-quark production. We measure a b-jet cross section of 2.74 ± 0.27(stat.) ± 0.42(syst.) pb in association with one flavor of leptonic W boson decay over a limited kinematic phase space.
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Total Pages | : 33 |
Release | : 2012 |
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Download Inclusive B-jet Production in Pp Collisions at Sqrt(s) Book in PDF, ePub and Kindle
The inclusive b-jet production cross section in pp collisions at a center-of-mass energy of 7 TeV is measured using data collected by the CMS experiment at the LHC. The cross section is presented as a function of the jet transverse momentum in the range 18