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48
The antik t jet clustering algorithm
 JHEP 04 (2008) 063, arXiv:0802.1189 [hepph
"... Abstract: The kt and Cambridge/Aachen inclusive jet finding algorithms for hadronhadron collisions can be seen as belonging to a broader class of sequential recombination jet algorithms, parametrised by the power of the energy scale in the distance measure. We examine some properties of a new membe ..."
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member of this class, for which the power is negative. This “antikt ” algorithm essentially behaves like an idealised cone algorithm, in that jets with only soft fragmentation are conical, active and passive areas are equal, the area anomalous dimensions are zero, the nonglobal logarithms are those
Jet Production Measurements at CMS
"... Jet production crosssection measurements are presented. The measurements are done with the data from Large Hadron Collider (LHC) protonproton collisions, collected with the Compact Muon Solenoid (CMS) detector. The inclusive jet production measurements are carried out with data collected at s = 7 ..."
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TeV and 8 TeV with total integrated luminosity (Lint) 5.0 fb−1 and 10.71 fb−1 respectively. The dijet production measurements are carried out with the s = 7 TeV dataset. Jets are reconstructed with the antikT clustering algorithm with size parameter R = 0.7. The measured cross sections are corrected
Jet Measurements In CMS
, 2012
"... A measurement of inclusive jet and dijet production cross sections is presented [2]. Data from large hadron collider (LHC) protonproton collisions at s = 7 TeV, corresponding to 4.67 f b−1 of integrated luminosity, have been collected with the compact muon solenoid (CMS) detector [1]. Jets are reco ..."
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are reconstructed with the antikT clustering algorithm with size parameter R = 0.7, extending to rapidity y  = 2.5, transverse momentum pT = 2 TeV, and dijet invariant mass MJJ = 5 TeV. The measured cross sections are corrected for detector effects and compared to perturbative QCD predictions at next
SMOOTH METRICS ON JET BUNDLES AND APPLICATIONS
, 807
"... Abstract. Following a suggestion made by J.P. Demailly, for each k ≥ 1, we endow, by an induction process, the kth (anti)tautological line bundle OX k (1) of an arbitrary complex directed manifold (X, V) with a natural smooth hermitian metric. Then, we compute recursively the Chern curvature form ..."
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Abstract. Following a suggestion made by J.P. Demailly, for each k ≥ 1, we endow, by an induction process, the kth (anti)tautological line bundle OX k (1) of an arbitrary complex directed manifold (X, V) with a natural smooth hermitian metric. Then, we compute recursively the Chern curvature form
LATEST JETS RESULTS FROM THE LHC
"... A fundamental characteristic of hadron colliders is the abundant production of jets, which then are studied to learn about hard QCD, the proton structure, or nonperturbative effects. In the following the latest results and developments from the LHC experiments on jet cross sections, event shapes, fl ..."
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higher jet pT’s become accessible providing significant constraints on the parton distribution functions (PDFs) of the proton and important input to searches for new physics. ATLAS and CMS,1,2 both employ the antikT jet algorithm 3 to define their jets, but with
The Subjet Multiplicity in Quark and Gluon Jets
, 1996
"... We calculate the mean number of subjets in quark and gluon jets in the final state of e + e − annihilation. Since “quark ” and “gluon ” jets are schemedependent objects, we stress the importance of using the same definition as in experimental analyses. We define the jets using the k ⊥ algorithm at a ..."
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We calculate the mean number of subjets in quark and gluon jets in the final state of e + e − annihilation. Since “quark ” and “gluon ” jets are schemedependent objects, we stress the importance of using the same definition as in experimental analyses. We define the jets using the k ⊥ algorithm
Studies of Jets, Subjets and Higgs Searches with The ATLAS Detector
"... 1 I, Sarah Baker, confirm that the work presented in this thesis is my own. Where information has been derived from other sources, I confirm that this has been indicated in the thesis. Measurements are made on data collected at a centreofmass energy of 7 TeV using the ATLAS detector at the LHC. Je ..."
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. Jets from noncollision sources for the inclusive jet crosssection are evaluated for jet transverse momentum values from 20 GeV to 1.5 TeV and for rapidity values up to y  < 4.4. Measurements are made using antikT jets with the distance parameters R = 0.4 and R = 0.6, corresponding to 37 pb−1
Precise QCD predictions for jet production at the LHC
"... Abstract. Theoretical predictions used in experimental analysis of LHC data have an inherent theoretical uncertainty associated to the relevant order in the perturbative expansion that the observable is computed. In this talk we briefly introduce and motivate the topic of QCD radiative corrections ..."
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stressing the impact of including higherorder QCD effects in the theory predictions and in particular we consider twoloop QCD corrections. We present numerical results at NNLO for gluonic jet production where jets are reconstructed using the antikT jet algorithm from gluongluon and quark
Inclusive Jet Spectra in pPb Collisions at ALICE
"... Jet suppression has been observed in central heavy ion collisions. This suppression is attributed to partonic energy loss in the Quark Gluon Plasma (QGP) formed in such collisions. However, this measurement is influenced by all stages of the collision. It is expected that in pPb collisions similar ..."
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initial conditions occur as in PbPb collisions without creating a QGP, allowing modification to the jet spectra due to cold nuclear matter effects to be quantified. Inclusive jet spectra in pPb collisions at sNN = 5.02 TeV measured by ALICE are presented. Jets are reconstructed via the antikT algorithm
ANLHEPPR1276 Resummation of jetveto logarithms in hadronic processes containing jets
"... We derive a factorization theorem for production of an arbitrary number of colorsinglet particles accompanied by a fixed number of jets at the LHC. The jets are defined with the standard antikT algorithm, and the fixed number of jets is obtained by imposing a veto on additional radiation in the fi ..."
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We derive a factorization theorem for production of an arbitrary number of colorsinglet particles accompanied by a fixed number of jets at the LHC. The jets are defined with the standard antikT algorithm, and the fixed number of jets is obtained by imposing a veto on additional radiation
Results 1  10
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48