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Determination Of The Strong Coupling Constant From The Inclusive Jet Cross Section In Ppbar Collisions At Sqrts
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Book Synopsis Determination of the Strong Coupling Constant from the Inclusive Jet Cross Section in Ppbar Collisions at Sqrt(s) by :
Download or read book Determination of the Strong Coupling Constant from the Inclusive Jet Cross Section in Ppbar Collisions at Sqrt(s) written by and published by . This book was released on 2009 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We determine the strong coupling constant [alpha]{sub s} and its energy dependence from the p{sub T} dependence of the inclusive jet cross section in p{bar p} collisions at √s = 1.96 TeV. The strong coupling constant is determined over the transverse momentum range 50
Book Synopsis Determination of the Strong Coupling Constant from Inclusive Jet Cross Section in Ppbar Collisions at Sqrt(s) by :
Download or read book Determination of the Strong Coupling Constant from Inclusive Jet Cross Section in Ppbar Collisions at Sqrt(s) written by and published by . This book was released on 2010 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The strong coupling constant as and its dependence on the momentum scale is determined from the pT dependence of the inclusive jet cross section in p{bar p} collisions at √s = 1.96 TeV measured with the D0 experiment. The jet transverse momentum range of 50
Book Synopsis Determination of the Strong Coupling Constant and Multijet Cross Section Ratio Measurements by :
Download or read book Determination of the Strong Coupling Constant and Multijet Cross Section Ratio Measurements written by and published by . This book was released on 2011 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concepts and results of determinations of the strong coupling in hadron collisions are discussed. A recent [alpha]{sub s} result from the inclusive jet cross section in p{bar p} collisions at √s = 1.96 TeV is presented which is based on perturbative QCD calculations beyond next-to-leading order. Emphasis is put on the consistency of the conceptual approach. Conceptual limitations in the approach of extracting as from cross section data are discussed and how these can be avoided by using observables that are defined as ratios of cross sections. For one such observable, the multijet cross section ratio R32, preliminary results are presented.
Book Synopsis Constraints on Parton Distribution Functions and Extraction of the Strong Coupling Constant from the Inclusive Jet Cross Section in Pp Collisions at $\sqrt{s}$ by :
Download or read book Constraints on Parton Distribution Functions and Extraction of the Strong Coupling Constant from the Inclusive Jet Cross Section in Pp Collisions at $\sqrt{s}$ written by and published by . This book was released on 2014 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inclusive jet cross section for proton-proton collisions at a centre-of-mass energy of 7$~\mathrm{TeV}$ was measured by the CMS Collaboration at the LHC with data corresponding to an integrated luminosity of 5.0$~\mathrm{fb}^{-1}$. The measurement covers a phase space up to 2$~\mathrm{TeV}$ in jet transverse momentum and 2.5 in absolute jet rapidity. The statistical precision of these data leads to stringent constraints on the parton distribution functions of the proton. The data provide important input for the gluon density at high fractions of the proton momentum and for the strong coupling constant at large energy scales. Using predictions from perturbative quantum chromodynamics at next-to-leading order, complemented with electroweak corrections, the constraining power of these data is investigated and the strong coupling constant at the Z boson mass $M_{\mathrm{Z}}$ is determined to be $\alpha_S(M_{\mathrm{Z}}) = 0.1185 \pm 0.0019\, (\mathrm{exp})\, ^{+0.0060}_{-0.0037}\, (\mathrm{theo})$, which is in agreement with the world average.
Book Synopsis Determination of the Strong Coupling Constant ΑS(mZ) from Measurements of Inclusive W± and Z Boson Production Cross Sections in Proton-proton Collisions at √s by :
Download or read book Determination of the Strong Coupling Constant ΑS(mZ) from Measurements of Inclusive W± and Z Boson Production Cross Sections in Proton-proton Collisions at √s written by and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of the Strong Coupling Constant from Multi-jet Production with the ATLAS Detector by : Marc-André Dufour
Download or read book Determination of the Strong Coupling Constant from Multi-jet Production with the ATLAS Detector written by Marc-André Dufour and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The strong coupling constant alpha_S is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using 38 pb -1 of data recorded by the ATLAS detector. An inclusive jet production ratio distribution is used to reduce parton distribution functions dependence and measure the coupling strength at energy scales between 100 GeV and 1.5 TeV. The value of the strong coupling constant alpha_S(MZ) is measured to be 0.111 +0.016_-0.012, in agreement with similar measurements performed at hadron colliders and the world average value. Results are also consistent with the running of the coupling as predicted by Quantum Chromodynamics, tested for the first time at energy scales greater than 209 GeV.
Book Synopsis Evaluation of the Strong Coupling Constant as Using the ATLAS Inclusive Jet Cross-section Data by : B. Malaescu
Download or read book Evaluation of the Strong Coupling Constant as Using the ATLAS Inclusive Jet Cross-section Data written by B. Malaescu and published by . This book was released on 2012 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of the Strong Coupling Constant Αs(mZ) in Next-to-next-to-leading Order QCD Using H1 Jet Cross Section Measurements by :
Download or read book Determination of the Strong Coupling Constant Αs(mZ) in Next-to-next-to-leading Order QCD Using H1 Jet Cross Section Measurements written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Inclusive Jet Cross Section In[bar P]p Collisions At[radical] by :
Download or read book The Inclusive Jet Cross Section In[bar P]p Collisions At[radical] 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 the preliminary measurement of the inclusive jet cross section for[vert-bar][eta][vert-bar][le] 0.5 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[ovr p]p Collider with the D0 detector. The inclusive jet cross sections are measured and reported as a function of transverse jet energy (35 GeV[le] E[sub T][le] 470 GeV) are in excellent agreement with next-to-leading order QCD. 11 refs., 4 figs.
Book Synopsis Measurement of the Inclusive Jet Cross Section in Pp Collisions at Sqrt[s] by :
Download or read book Measurement of the Inclusive Jet Cross Section in Pp 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: The inclusive jet cross section is measured in pp collisions with a center-of-mass energy of 7 TeV at the LHC using the CMS experiment. The data sample corresponds to an integrated luminosity of 34 inverse picobarns. The measurement is made for jet transverse momenta in the range 18-1100 GeV and for absolute values of rapidity less than 3. The measured cross section extends to the highest values of jet pT ever observed and, within the experimental and theoretical uncertainties, is generally in agreement with next-to-leading-order perturbative QCD predictions.
Book Synopsis Precision Determination of the Strong Coupling Constant by : Riccardo Abbate
Download or read book Precision Determination of the Strong Coupling Constant written by Riccardo Abbate and published by . This book was released on 2012 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we study the event shapes variable thrust. Event shape variables are observables that characterize the shape of the distribution of the final state particles of a reaction. We take advantage of the formalism of Soft Collinear Effective Theory (SCET), an effective theory of the strong interactions appropriate for describing energetic jets. We give a factorization theorem for the process e+e- to hadrons, valid in the whole range of thrust values. This factorization theorem resums large logarithms at the N3LL accuracy and contains the full O(a) result for the fixed order cross section. In order to be able to describe the whole range of thrust values, we define the profile functions, which are thrust-dependent factorization scales which smoothly interpolate between regions where resummation of large logarithms is important and where it is not. To determine non perturbative effects, we fit renormalon-free nonperturbative matrix elements of operators defined in field theory, Q1. We perform a global analysis to all available thrust data in the tail region, where a two parameter fit to a,(mz) and the first power correction Q1 suffices. We find cr(mz) = 0.1135 i (0.0002)expt ± (0.0005)hadr ± (0.0009)pert, with X2 /dof(= 485) = 0.91, where the displayed 1-sigma errors are the total experimental error, the hadronization uncertainty, and the perturbative theory uncertainty, respectively. Furthermore, we perform a global analysis to all available data on the first moment of the thrust distribution. This analysis is a partially independent check of the tail fit, in fact it probes different regions of the thrust distribution and the analysis of experimental systematic uncertainties was conducted independently with respect to the data for the distribution. We find a,(mz) = 0.1141 i (0.0004)exp ± (0.0014)hadr ± (0.0007)pert with X2/dof(= 45) = 1.33. We also consider pp collisions, in particular the Drell-Yan process. Here we calculate analytically the beam thrust logarithms of the relevant beam functions and of the coefficient function at O(a2). This is a necessary ingredient for the calculation of the nonsingular terms in resummed predictions.
Book Synopsis Measurement of the Strong Coupling Constant from Inclusive Jet Production at the Tevatron Collider by : Christina Mesropian
Download or read book Measurement of the Strong Coupling Constant from Inclusive Jet Production at the Tevatron Collider written by Christina Mesropian and published by . This book was released on 2000 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Inclusive Jet Cross Section in Pp{u02C9} Collisions at [a Center of Mass Energy of ] 1.96 TeV by : Gene U. Flanagan
Download or read book The Inclusive Jet Cross Section in Pp{u02C9} Collisions at [a Center of Mass Energy of ] 1.96 TeV written by Gene U. Flanagan and published by . This book was released on 2005 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Inclusive Jet Cross Section in {bar P}p Collisions at by :
Download or read book The Inclusive Jet Cross Section in {bar P}p Collisions at 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 the preliminary measurement of the inclusive jet cross section for {vert_bar}[eta]{vert_bar} [less than or equal to] 0.5 at [square root]s = 1.8 TeV. Two data sets with integrated luminosities of 91 pb−1 and 14 pb−1 were collected at the Fermilab Tevatron {ovr p}p Collider with the D0 detector. The inclusive jet cross sections are measured and reported as a function of transverse jet energy (35 GeV [less than or equal to] E{sub T} [less than or equal to] 470 GeV) are in excellent agreement with next-to-leading order QCD. 11 refs., 4 figs.
Book Synopsis Measurement of the Inclusive Jet Cross Section in Pp Collisions at √s by : CMS Collaboration
Download or read book Measurement of the Inclusive Jet Cross Section in Pp Collisions at √s written by CMS Collaboration and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Inclusive Jet Cross-section in P Anti-p Collisions at S**91 by :
Download or read book Measurement of the Inclusive Jet Cross-section in P Anti-p Collisions at S**91 written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Inclusive Jet Cross Section in P Pbar Collisions At[radical] by :
Download or read book The Inclusive Jet Cross Section in P Pbar Collisions At[radical] written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a preliminary measurement of the central inclusive jet cross section using a successive combination algorithm based on relative transverse momenta (k[perpendicular]) for jet reconstruction. We analyze a 87.3 pb[sup -1] data sample collected by the D0 detector at the Fermilab Tevatron p[bar p] Collider during 1994-1995. The cross section, reported as a function of transverse momentum (p[sub T]> 60 GeV) in the central region of pseudo-rapidity ([eta]
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