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Book Synopsis Inclusive Jet Cross-sections and Dijet Azimuthal Decorrelations with by : Raimund Strohmer
Download or read book Inclusive Jet Cross-sections and Dijet Azimuthal Decorrelations with written by Raimund Strohmer and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a preliminary measurement of the inclusive jet cross-sections based on an integrated luminosity of 378 pb{sup -1} acquired with the D0 detector between 2002 and 2004 at a center of mass energy of {radical}s = 1.96 TeV and a measurement of azimuthal dijet decorrelations based on an integrated luminosity of 150 pb{sup -1}. The cross section measurements are based on an iterative cone algorithm with a cone size of R = 0.7. They are performed in two rapidity bins between 0.0 and 0.8. The measurements are in good agreement with next to leading order calculations. The azimuthal angle between the two leading jets is sensitive to higher order QCD effects. The measurement of dijet azimuthal decorrelations therefore probes these effects without explicitly reconstructing more than two jets. Except for large azimuthal angles where soft effects are important the measurements are well described by the next to leading order perturbation theory.
Download or read book Results from D0 written by and published by . This book was released on 2010 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several tests of Quantum chromodynamics (QCD) in the inclusive dijet final state from the D0 experiment at the Fermilab Tevatron Collider are presented. At hadron colliders, jet production has one of the highest cross section and is therefore an ideal place to test the predictions of perturbative Quantum chromodynamics (pQCD). The difference in the azimuthal angle of the two jet system ([Delta][phi]), the [chi]{sub dijet} variable related to the polar angle of the dijet system ([chi]{sub dijet} = exp(y1-y2), where y{sub 1,2} are the rapidities y = 0.5ln(E + p{sub z})/(E - p{sub z}) of the two jets, E is the jet energy and p{sub z} is the jet momentum along the beam line) and dijet invariant mass M{sub jj} are presented. Several interesting dijet variables were measured by the DO collaboration in the Run II of the Tevatron Collider. The measurements are well described by the NLO predictions of QCD and the [chi]{sub dijet} sets the best limits in some models beyond the Standard model.
Book Synopsis Azimuthal Decorrelations and Multiple Parton Interactions in Photon+2 Jet and Photon+3 Jet Events in Ppbar Collisions at Sqrt{s} by :
Download or read book Azimuthal Decorrelations and Multiple Parton Interactions in Photon+2 Jet and Photon+3 Jet Events in Ppbar Collisions at Sqrt{s} written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Samples of inclusive [gamma] + 2 jet and [gamma] + 3 jet events collected by the D0 experiment with an integrated luminosity of about 1 fb−1 in p{bar p} collisions at √s = 1.96 TeV are used to measure cross sections as a function of the angle in the plane transverse to the beam direction between the transverse momentum (p{sub T}) of the [gamma] + leading jet system (jets are ordered in p{sub T}) and p{sub T} of the other jet for [gamma] + 2 jet, or p{sub T} sum of the two other jets for [gamma] + 3 jet events. The results are compared to different models of multiple parton interactions (MPI) in the pythia and sherpa Monte Carlo (MC) generators. The data indicate a contribution from events with double parton (DP) interactions and are well described by predictions provided by the pythia MPI models with p{sub T}-ordered showers and by sherpa with the default MPI model. The [gamma] + 2 jet data are also used to determine the fraction of events with DP interactions as a function of the azimuthal angle and as a function of the second jet p{sub T}.
Book Synopsis Measurement of Dijet Azimuthal Decorrelation in Pp Collisions at $\sqrt{s}$ by :
Download or read book Measurement of Dijet Azimuthal Decorrelation in Pp Collisions at $\sqrt{s}$ written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of the decorrelation of azimuthal angles between the two jets with the largest transverse momenta is presented for seven regions of leading jet transverse momentum up to 2.2 TeV. The analysis is based on the proton-proton collision data collected with the CMS experiment at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb$^{-1}$. The dijet azimuthal decorrelation is caused by the radiation of additional jets and probes the dynamics of multijet production. The results are compared to fixed-order predictions of perturbative quantum chromodynamics (QCD), and to simulations using Monte Carlo event generators that include parton showers, hadronization, and multiparton interactions. Event generators with only two outgoing high transverse momentum partons fail to describe the measurement, even when supplemented with next-to-leading-order QCD corrections and parton showers. Much better agreement is achieved when at least three outgoing partons are complemented through either next-to-leading-order predictions or parton showers. This observation emphasizes the need to improve predictions for multijet production.
Book Synopsis Measurement of Inclusive Jet And Dijet Cross Sections in Proton-Proton Collisions at 7 TeV Centre-Of-Mass Energy with the ATLAS Detector by :
Download or read book Measurement of Inclusive Jet And Dijet Cross Sections in Proton-Proton Collisions at 7 TeV Centre-Of-Mass Energy with the ATLAS Detector written by and published by . This book was released on 2013 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Jet Physics at the LHC by : Klaus Rabbertz
Download or read book Jet Physics at the LHC written by Klaus Rabbertz and published by Springer. This book was released on 2016-10-11 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the latest experimental results on jet physics from proton-proton collisons at the LHC. Jets allow to determine the strong coupling constant over a wide range of energies up the highest ones possible so far, and to constrain the gluon parton distribution of the proton, both of which are important uncertainties on theory predictions in general and for the Higgs boson in particular.A novel approach in this book is to categorize the examined quantities according to the types of absolute, ratio, or shape measurements and to explain in detail the advantages and differences. Including numerous illustrations and tables the physics message and impact of each observable is clearly elaborated.
Book Synopsis Preliminary Measurement of the Inclusive Jet and Dijet Cross Section In[bar P]p Collisions At[radical] S by :
Download or read book Preliminary Measurement of the Inclusive Jet and Dijet Cross Section In[bar P]p Collisions At[radical] S written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on preliminary measurements of the central, [eta][le] 0.5, inclusive jet and dijet cross sections at[radical]s= 1.8 TeV. Two data sets with integrated luminosities of 91 pb[sup[minus]1] and 14 pb[sup[minus]1] were collected at the Fermilab Tevatron p[ovr p] Collider with the D0 detector. The inclusive jet cross section measured with both data sets and reported as a function of transverse jet energy (35 GeV[le] E[sub T][le] 470 GeV) and the dijet cross section measured with the 91 pb[sup[minus]1] data set and reported as a function of dijet mass (200 GeV[le] M[sub JJ][le] 1 TeV) are in excellent agreement with next-to-leading order QCD. 11 refs., 5 figs.
Book Synopsis Deep Inelastic Scattering by : Masahiro Kuze
Download or read book Deep Inelastic Scattering written by Masahiro Kuze and published by World Scientific. This book was released on 2007 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings present the most up-to-date status of deep inelastic scattering (DIS) physics. Topics such as structure function measurements and phenomenology, quantum chromodynamics (QCD) studies in DIS and photoproduction, spin physics and diffractive interactions are reviewed in detail, with emphasis on those studies that push the test of QCD and the Standard Model to the limits of their present range of validity, towards both the very high and the very low four-momentum transfers in leptonproton scattering.
Book Synopsis Inclusive Jet Cross Sections and Dijet Correlations in D*± Photoproduction at HERA by : S. Chekanov
Download or read book Inclusive Jet Cross Sections and Dijet Correlations in D*± Photoproduction at HERA written by S. Chekanov and published by . This book was released on 2005 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Run II QCD Results from by : Markus Wobisch
Download or read book Recent Run II QCD Results from written by Markus Wobisch and published by . This book was released on 2004 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present recent QCD results from the D0 experiment at the Fermilab Tevatron Collider in p{bar p} collisions at {radical}s = 1.96TeV. Results are presented for the inclusive jet and dijet cross sections, a measurement of dijet azimuthal decorrelations, studies of elastic scattering, and a search for diffractively produced Z bosons.
Book Synopsis Study of Jet Transverse Momentum and Jet Rapidity Dependence on Dijet Azimuthal Decorrelations by :
Download or read book Study of Jet Transverse Momentum and Jet Rapidity Dependence on Dijet Azimuthal Decorrelations written by and published by . This book was released on 2012 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a collision experiment involving highly energetic particles such as hadrons, processes at high momentum transfers can provide information useful for many studies involving Quantum Chromodynamics (QCD). One way of analyzing these interactions is through angular distributions. In hadron-hadron collisions, the angular distribution between the two leading jets with the largest transverse momentum (pT) is affected by the production of additional jets. While soft radiation causes small differences in the azimuthal angular distribution of the two leading jets produced in a collision event, additional hard jets produced in the event have more pronounced influence on the distribution of the two leading jets produced in the collision. Thus, the dijet azimuthal angular distribution can serve as a variable that can be used to study the transition from soft to hard QCD processes in a collision event. This dissertation presents a triple-differential study involving the azimuthal angular distribution and the jet transverse momenta, and jet rapidities of the first two leading jets. The data used for this research are obtained from proton-antiproton (p$\bar{p}$) collisions occurring at a center of mass energy of 1.96TeV, using the DØ detector in Run II of the Tevatron Collider at the Fermi National Accelerator Laboratory (FNAL) in Illinois, USA. Comparisons are made to perturbative QCD (pQCD) predictions at next-to-leading order (NLO).
Book Synopsis Inclusive Jet Cross Sections and Dijet Correlations in D*[plus Over Minus] Photoproduction at HERA by : Deutsches Elektronen-Synchrotron (Center)
Download or read book Inclusive Jet Cross Sections and Dijet Correlations in D*[plus Over Minus] Photoproduction at HERA written by Deutsches Elektronen-Synchrotron (Center) and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Inclusive Jet Cross Sections in Z/Υ*(→e+e−) + Jets Production in Pp̅ Collisions at √s by : Oriol Saltó Bauzà
Download or read book Measurement of Inclusive Jet Cross Sections in Z/Υ*(→e+e−) + Jets Production in Pp̅ Collisions at √s written by Oriol Saltó Bauzà and published by . This book was released on 2008 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preliminary Measurement of the Inclusive Jet and Dijet Cross Section in {pp} Collisions at {square Root 3} by :
Download or read book Preliminary Measurement of the Inclusive Jet and Dijet Cross Section in {pp} Collisions at {square Root 3} written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hadron Collider Physics 2005 by : Mario Campanelli
Download or read book Hadron Collider Physics 2005 written by Mario Campanelli and published by Springer Science & Business Media. This book was released on 2007-08-17 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the proceedings of The Hadron Collider Physics Symposia (HCP) 2005, and reviews the state-of-the-art in the key physics directions of experimental hadron collider research. Topics include QCD physics, precision electroweak physics, c-, b-, and t-quark physics, physics beyond the Standard Model, and heavy ion physics. The present volume serves as a reference for everyone working in the field of accelerator-based high-energy physics.
Book Synopsis Preliminary Measurement of the Inclusive Jet and Dijet Cross Section in {bar P}p Collisions at √ S by :
Download or read book Preliminary Measurement of the Inclusive Jet and Dijet Cross Section in {bar P}p Collisions at √ S written by and published by . This book was released on 1996 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on preliminary measurements of the central,
Book Synopsis Hadron Collider Physics by : Harry Weerts
Download or read book Hadron Collider Physics written by Harry Weerts and published by American Institute of Physics. This book was released on 2005-04-07 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: East Lansing, Michigan, 14-18 June 2004
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