Measurement of Inclusive Jet And Dijet Cross Sections in Proton-Proton Collisions at 7 TeV Centre-Of-Mass Energy with the ATLAS Detector

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ISBN 13 :
Total Pages : 67 pages
Book Rating : 4.:/5 (951 download)

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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:

Measurement of the Inclusive Jet Cross Section with the ATLAS Detector at the Large Hadron Collider

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Publisher : Springer Science & Business Media
ISBN 13 : 3642305385
Total Pages : 167 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis Measurement of the Inclusive Jet Cross Section with the ATLAS Detector at the Large Hadron Collider by : Caterina Doglioni

Download or read book Measurement of the Inclusive Jet Cross Section with the ATLAS Detector at the Large Hadron Collider written by Caterina Doglioni and published by Springer Science & Business Media. This book was released on 2012-07-28 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tests of the current understanding of physics at the highest energies achievable in man-made experiments are performed at CERN’s Large Hadron Collider. In the theory of the strong force within the Standard Model of particle physics - Quantum ChromoDynamics or QCD - confined quarks and gluons from the proton-proton scattering manifest themselves as groups of collimated particles. These particles are clustered into physically measurable objects called hadronic jets. As jets are widely produced at hadron colliders, they are the key physics objects for an early "rediscovery of QCD". This thesis presents the first jet measurement from the ATLAS Collaboration at the LHC and confronts the experimental challenges of precision measurements. Inclusive jet cross section data are then used to improve the knowledge of the momentum distribution of quarks and gluons within the proton and of the magnitude of the strong force.

Measurement of Dijet Cross Sections in Proton-proton Collisions at 7 TeV Center-of-mass Energy Using the ATLAS Detector

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ISBN 13 : 9781303634567
Total Pages : 141 pages
Book Rating : 4.6/5 (345 download)

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Book Synopsis Measurement of Dijet Cross Sections in Proton-proton Collisions at 7 TeV Center-of-mass Energy Using the ATLAS Detector by :

Download or read book Measurement of Dijet Cross Sections in Proton-proton Collisions at 7 TeV Center-of-mass Energy Using the ATLAS Detector written by and published by . This book was released on 2013 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dijet production is measured in proton--proton collisions with a center-of-mass energy of 7 TeV at the LHC. Double-differential dijet cross sections are presented as functions of the dijet mass and rapidity separation of the two highest-transverse-momentum jets in an event. The data sample collected in 2011 by the ATLAS detector is considered, corresponding to an integrated luminosity of 4.5 fb -1. Jets are defined using the anti-kt algorithm, with two choices of the jet radius parameter, R = 0.4 and R = 0.6. The results are compared with next-to-leading-order (NLO) perturbative calculations, as well as NLO Monte Carlo generator predictions. In both cases, electroweak effects are accounted for. A method for the quantitative comparison of theory predictions with data is presented, employing a frequentist technique. This allows for strong statements on which sets of parton distribution functions best describe the data. A theory of quark compositeness modeled by contact interactions is confronted by the unfolded data using the CLs technique, an example of the versatility of the measurement.

Jet Physics at the LHC

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Publisher : Springer
ISBN 13 : 3319421158
Total Pages : 226 pages
Book Rating : 4.3/5 (194 download)

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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.

Measurement of Three-jet Production Cross-sections in Pp Collisions at 7 TeV Centre-of-mass Energy Using the ATLAS Detector

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (925 download)

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Book Synopsis Measurement of Three-jet Production Cross-sections in Pp Collisions at 7 TeV Centre-of-mass Energy Using the ATLAS Detector by :

Download or read book Measurement of Three-jet Production Cross-sections in Pp Collisions at 7 TeV Centre-of-mass Energy Using the ATLAS Detector written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Double-differential three-jet production cross-sections are measured in proton-proton collisions at a centre-of-mass energy of [arrow]" = 7TeV using the ATLAS detector at the large hadron collider. The measurements are presented as a function of the three-jet mass (mjjj), in bins of the sum of the absolute rapidity separations between the three leading jets).

Dijet Angular Distributions in Proton-Proton Collisions

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Publisher : Springer Science & Business Media
ISBN 13 : 3642245978
Total Pages : 176 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis Dijet Angular Distributions in Proton-Proton Collisions by : Nele Boelaert

Download or read book Dijet Angular Distributions in Proton-Proton Collisions written by Nele Boelaert and published by Springer Science & Business Media. This book was released on 2011-10-26 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is based on the first data from the Large Hadron Collider (LHC) at CERN. Its theme can be described as the classical Rutherford scattering experiment adapted to the LHC: measurement of scattering angles to search for new physics and substructure. At the LHC, colliding quarks and gluons exit the proton collisions as collimated particle showers, or jets. The thesis presents studies of the scattering angles of these jets. It includes a phenomenological study at the LHC design energy of 14 TeV, where a model of so-called large extra dimensions is used as a benchmark process for the sensitivity to new physics. The experimental result is the first measurement, made in 2010, by ATLAS, operating at the LHC start-up energy of 7 TeV. The result is compatible with the Standard Model and demonstrates how well the physics and the apparatus are understood. The first data is a tiny fraction of what will be accumulated in the coming years, and this study has set the stage for performing these measurements with confidence as the LHC accumulates luminosity and increases its energy, thereby probing smaller length scales.

Measurement of the Inclusive Jet Cross Section in Proton-proton Collisions at the √s

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ISBN 13 :
Total Pages : 163 pages
Book Rating : 4.:/5 (118 download)

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Book Synopsis Measurement of the Inclusive Jet Cross Section in Proton-proton Collisions at the √s by : Sebastian Eckweiler

Download or read book Measurement of the Inclusive Jet Cross Section in Proton-proton Collisions at the √s written by Sebastian Eckweiler and published by . This book was released on 2011 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Inclusive Jet Cross Sections in Proton-proton Collisions at 7.0 TeV Center-of-mass Energy with the ATLAS Detector at the Large Hadron Collider

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Publisher :
ISBN 13 :
Total Pages : 438 pages
Book Rating : 4.:/5 (748 download)

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Book Synopsis Inclusive Jet Cross Sections in Proton-proton Collisions at 7.0 TeV Center-of-mass Energy with the ATLAS Detector at the Large Hadron Collider by : Kerstin M. Perez

Download or read book Inclusive Jet Cross Sections in Proton-proton Collisions at 7.0 TeV Center-of-mass Energy with the ATLAS Detector at the Large Hadron Collider written by Kerstin M. Perez and published by . This book was released on 2011 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Inclusive Jet Cross Sections in Proton-proton Collisions at 7.0 TeV Center-of-mass Energy with the ATLAS Detector at the Large Hadron Collider

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (748 download)

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Book Synopsis Inclusive Jet Cross Sections in Proton-proton Collisions at 7.0 TeV Center-of-mass Energy with the ATLAS Detector at the Large Hadron Collider by : Kerstin M. Perez

Download or read book Inclusive Jet Cross Sections in Proton-proton Collisions at 7.0 TeV Center-of-mass Energy with the ATLAS Detector at the Large Hadron Collider written by Kerstin M. Perez and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Measurement of the Inclusive Jet Cross Section in Proton-proton Collisions at Root Out S

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (863 download)

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Book Synopsis Measurement of the Inclusive Jet Cross Section in Proton-proton Collisions at Root Out S by : Sebastian Eckweiler

Download or read book Measurement of the Inclusive Jet Cross Section in Proton-proton Collisions at Root Out S written by Sebastian Eckweiler and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Measurement of the Inclusive 3-jet Production Differential Cross Section in Proton-proton Collisions at 7 TeV and Determination of the Strong Coupling Constant in the TeV Range

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ISBN 13 :
Total Pages : 223 pages
Book Rating : 4.:/5 (925 download)

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Book Synopsis Measurement of the Inclusive 3-jet Production Differential Cross Section in Proton-proton Collisions at 7 TeV and Determination of the Strong Coupling Constant in the TeV Range by :

Download or read book Measurement of the Inclusive 3-jet Production Differential Cross Section in Proton-proton Collisions at 7 TeV and Determination of the Strong Coupling Constant in the TeV Range written by and published by . This book was released on 2015 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents a measurement of the inclusive 3-jet production differential cross section at a proton-proton centre-of-mass energy of 7 TeV using data corresponding to an integrated luminosity of 5 fb$^{-1}$ collected with the CMS detector. The analysis is based on the three jets with the highest transverse momenta. The cross section is measured as a function of the invariant mass of the three jets in a range of 445-3270 GeV and in two bins of the maximum rapidity of the jets up to a value of 2. A comparison between the measurement and the prediction from perturbative QCD at next-to-leading order is performed. Within uncertainties, data and theory are in agreement. The sensitivity of the observable to parameters of the theory such as the parton distribution functions of the proton and the strong coupling constant $\alpha_S$ is studied. A fit to all data points with 3-jet masses larger than 664 GeV gives a value of the strong coupling constant of $\alpha_S(M_\mathrm{Z})$ = 0.1171 $\pm$ 0.0013 (exp) $^{+0.0073}_{-0.0047}$ (theo).

QCD Radiation in Top-Antitop and Z+Jets Final States

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Publisher : Springer
ISBN 13 : 3319196537
Total Pages : 188 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis QCD Radiation in Top-Antitop and Z+Jets Final States by : Kiran Joshi

Download or read book QCD Radiation in Top-Antitop and Z+Jets Final States written by Kiran Joshi and published by Springer. This book was released on 2015-06-12 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis contains new research in both experimental and theoretical particle physics, making important contributions in each. Two analyses of collision data from the ATLAS experiment at the LHC are presented, as well as two phenomenological studies of heavy coloured resonances that could be produced at the LHC. The first data analysis was the measurement of top quark-antiquark production with a veto on additional jet activity. As the first detector-corrected measurement of jet activity in top-antitop events it played an important role in constraining the theoretical modelling, and ultimately reduced these uncertainties for ATLAS's other top-quark measurements by a factor of two. The second data analysis was the measurement of Z+2jet production and the observation of the electroweak vector boson fusion (VBF) component. As the first observation of VBF at a hadron collider, this measurement demonstrated new techniques to reliably extract VBF processes and paved the way for future VBF Higgs measurements. The first phenomenological study developed a new technique for identifying the colour of heavy resonances produced in proton-proton collisions. As a by-product of this study an unexpected and previously unnoticed correlation was discovered between the probability of correctly identifying a high-energy top and the colour structure of the event it was produced in. The second phenomenological study explored this relationship in more detail, and could have important consequences for the identification of new particles that decay to top quarks.

Search for New Heavy Charged Bosons and Measurement of High-Mass Drell-Yan Production in Proton—Proton Collisions

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Publisher : Springer
ISBN 13 : 3030006506
Total Pages : 386 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis Search for New Heavy Charged Bosons and Measurement of High-Mass Drell-Yan Production in Proton—Proton Collisions by : Markus Zinser

Download or read book Search for New Heavy Charged Bosons and Measurement of High-Mass Drell-Yan Production in Proton—Proton Collisions written by Markus Zinser and published by Springer. This book was released on 2018-09-25 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents two analyses, the first of which involves the search for a new heavy charged gauge boson, a so-called W' boson. This new gauge boson is predicted by some theories extending the Standard Model gauge group to solve some of its conceptual problems. Decays of the W' boson in final states with a lepton (l± = e± , μ±) and the corresponding (anti-)neutrino are considered. Data collected by the ATLAS experiment in 2015 at a center of mass energy of √s =13 TeV is used for the analysis. In turn, the second analysis presents a measurement of the double-differential cross section of the process pp->Z/gamma^* + X -> l^+l^- + X, including a gamma gamma induced contribution, at a center of mass energy of sqrt{s} = 8 TeV. The measurement is performed in an invariant mass region of 116 GeV to 1500 GeV as a function of invariant mass and absolute rapidity of the l^+l^-- pair, and as a function of invariant mass and pseudorapidity separation of the l^+l^-- pair. The data analyzed was recorded by the ATLAS experiment in 2012 and corresponds to an integrated luminosity of 20.3/fb. It is expected that the measured cross sections are sensitive to the PDFs at very high values of the Bjorken-x scaling variable, and to the photon structure of the proton.

The Black Book of Quantum Chromodynamics — A Primer for the LHC Era

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Publisher : Oxford University Press
ISBN 13 : 0191014990
Total Pages : 761 pages
Book Rating : 4.1/5 (91 download)

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Book Synopsis The Black Book of Quantum Chromodynamics — A Primer for the LHC Era by : John Campbell

Download or read book The Black Book of Quantum Chromodynamics — A Primer for the LHC Era written by John Campbell and published by Oxford University Press. This book was released on 2018-01-19 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Black Book of Quantum Chromodynamics is an in-depth introduction to the particle physics of current and future experiments at particle accelerators. The book offers the reader an overview of practically all aspects of the strong interaction necessary to understand and appreciate modern particle phenomenology at the energy frontier. It assumes a working knowledge of quantum field theory at the level of introductory textbooks used for advanced undergraduate or in standard postgraduate lectures. The book expands this knowledge with an intuitive understanding of relevant physical concepts, an introduction to modern techniques, and their application to the phenomenology of the strong interaction at the highest energies. Aimed at graduate students and researchers, it also serves as a comprehensive reference for LHC experimenters and theorists. This book offers an exhaustive presentation of the technologies developed and used by practitioners in the field of fixed-order perturbation theory and an overview of results relevant for the ongoing research programme at the LHC. It includes an in-depth description of various analytic resummation techniques, which form the basis for our understanding of the QCD radiation pattern and how strong production processes manifest themselves in data, and a concise discussion of numerical resummation through parton showers, which form the basis of event generators for the simulation of LHC physics, and their matching and merging with fixed-order matrix elements. It also gives a detailed presentation of the physics behind the parton distribution functions, which are a necessary ingredient for every calculation relevant for physics at hadron colliders such as the LHC, and an introduction to non-perturbative aspects of the strong interaction, including inclusive observables such as total and elastic cross sections, and non-trivial effects such as multiple parton interactions and hadronization. The book concludes with a useful overview contextualising data from previous experiments such as the Tevatron and the Run I of the LHC which have shaped our understanding of QCD at hadron colliders.

Preliminary Measurement of the Inclusive Jet and Dijet Cross Section In[bar P]p Collisions At[radical] S

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (683 download)

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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.

Jet Quenching in Relativistic Heavy Ion Collisions at the LHC

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Publisher : Springer Science & Business Media
ISBN 13 : 3319012193
Total Pages : 180 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Jet Quenching in Relativistic Heavy Ion Collisions at the LHC by : Aaron Angerami

Download or read book Jet Quenching in Relativistic Heavy Ion Collisions at the LHC written by Aaron Angerami and published by Springer Science & Business Media. This book was released on 2013-12-02 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the first measurements of jets in relativistic heavy ion collisions as reported by the ATLAS Collaboration. These include the first direct observation of jet quenching through the observation of a centrality-dependent dijet asymmetry. Also, a series of jet suppression measurements are presented, which provide quantitative constraints on theoretical models of jet quenching. These results follow a detailed introduction to heavy ion physics with emphasis on the phenomenon of jet quenching and a comprehensive description of the ATLAS detector and its capabilities with regard to performing these measurements.

Measurement of the Differential Dijet Production Cross Section in Proton-proton Collisions at

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ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Measurement of the Differential Dijet Production Cross Section in Proton-proton Collisions at by :

Download or read book Measurement of the Differential Dijet Production Cross Section in Proton-proton Collisions at written by and published by . This book was released on 2011 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of the double-differential inclusive dijet production cross section in proton-proton collisions at sqrt(s)=7 TeV is presented as a function of the dijet invariant mass and jet rapidity. The data correspond to an integrated luminosity of 36 inverse picobarns, recorded with the CMS detector at the LHC. The measurement covers the dijet mass range 0.2 TeV to 3.5 TeV and jet rapidities up to.