pQCD calculations of heavy quark and<i>J</i>/ψ production

Cacciari, Matteo

doi:10.1088/0954-3899/34/8/s37

Cited by 17 publications

(27 citation statements)

References 27 publications

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“…The cross sections have been determined in four b-jet rapidity regions, namely |y| < 0.5, 0.5 < |y| < 1, 1 < |y| < 1.5 and 1.5 < |y| < 2. The b-jets in the Cascade calculations are reconstructed with the anti-k t cone algorithm [27] (using the Fastjet package [28,29]) with radius R = 0.5. The results of our calculations are shown in Figs.…”

Section: Numerical Resultsmentioning

confidence: 99%

Investigation of beauty production and parton shower effects at the LHC

et al. 2012

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We present hadron-level predictions from the Monte Carlo generator Cascade and parton level calculations of open b quark, b-flavored hadron and inclusive b-jet production in the framework of the k T -factorization QCD approach for the LHC energies. The unintegrated gluon densities in a proton are determined using the CCFM evolution equation and the Kimber-Martin-Ryskin (KMR) prescription. Our predictions are compared with the first data taken by the CMS and LHCb collaborations at √ s = 7 TeV. We study the theoretical uncertainties of our calculations and investigate the effects coming from parton showers in initial and final states. The special role of initial gluon transverse momenta in description of the data is pointed out. PACS number(s): 12.38.-t, 13.85.-t

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Section: Numerical Resultsmentioning

confidence: 99%

Investigation of beauty production and parton shower effects at the LHC

et al. 2012

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“…We assume a nominal coverage of |η| < 1.0 and full azimuthal coverage. For the entire study we utilize the anti-k T jet reconstruction algorithm [22] (part of the FastJet package [23]) with radius parameters R=0.2, 0.3, and 0.4.…”

Section: Jet -Underlying Event Separation Methodologymentioning

confidence: 99%

Method for separating jets and the underlying event in heavy ion collisions at the BNL Relativistic Heavy Ion Collider

et al. 2012

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Reconstructed jets in heavy ion collisions are a crucial tool for understanding the quark-gluon plasma. The separation of jets from the underlying event is necessary particularly in central heavy ion reactions in order to quantify medium modifications of the parton shower and the response of the surrounding medium itself. There have been many methods proposed and implemented for studying the underlying event substructure in proton-proton and heavy ion collisions. In this paper, we detail a method for understanding underlying event contributions in Au+Au collisions at √ sNN = 200GeV utilizing the HIJING event generator [1]. This method, extended from previous work by the ATLAS collaboration [2], provides a well-defined association of "truth jets" from the fragmentation of hard partons with "reconstructed jets" using the anti-kT algorithm. Results presented here are based on an analysis of 750M minimum bias HIJING events. We find that there is a substantial range of jet energies and radius parameters where jets are well separated from the background fluctuations (often termed "fake jets") that make jet measurements at RHIC a compelling physics program.

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“…We use CTEQ6L [17] for parton distribution function to calculate cross sections setting the factorization scale at Q 2 =ŝ, where √ s is the center of mass energy in the partonic frame. Jets are reconstructed using FastJet [18] with an anti − K T [19] algorithm using a size parameter R=0.5. Jets are selected with a cut of p j T ≥ 50GeV and |η| ≤ 3.…”

Section: Signal and Backgroundmentioning

confidence: 99%

Probing supersymmetry using event shape variables at the 8 TeV LHC

2012

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We have revisited the prospects of Supersymmetry(SUSY) searches at the LHC with 7 TeV energy along with the prediction of the discovery potential at 8 TeV energy assuming an integrated luminosity 5 f b −1 and 20 f b −1 with mSUGRA/CMSSM as a model framework. We discuss further optimization of our selection strategy which is based on the hadronic event shape variables. Evaluating the standard model backgrounds and signal rates in detail we predict the discovery reach in the m 0 − m 1/2 plane for 7 TeV with 5f b −1 luminosity. We also present the discovery reach for 8 TeV energy with an integrated luminosity 5f b −1 and 20 f b −1 . A comparison is made between our results and the exclusion plots obtained by CMS and ATLAS. Finally, discovery reach in the gluino and squark mass plane at the 7 TeV and 8 TeV energy is also presented. rajdeep@tifr.res.in guchait@tifr.res.in dipan@tifr.res.in At the LHC the primary production modes of SUSY particles are squark and gluino pairs

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pQCD calculations of heavy quark andJ/ψ production

Abstract: Abstract. We review the present status of theoretical predictions for both closed (J/ψ) and open heavy quark production in high energy collisions, and their comparisons to experimental data.

Cited by 17 publications

References 27 publications

Investigation of beauty production and parton shower effects at the LHC

Investigation of beauty production and parton shower effects at the LHC

Method for separating jets and the underlying event in heavy ion collisions at the BNL Relativistic Heavy Ion Collider

Probing supersymmetry using event shape variables at the 8 TeV LHC

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