Measurement Of The Double Differential Diject Mass Cross Section In Ppbar Collisions At Sqrts PDF Download
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| Total Pages | : 176 |
| Release | : 2009 |
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Download Measurement of the Double Differential Diject Mass Cross Section in Pp(bar) Collisions at Sqrt(s) Book in PDF, ePub and Kindle
This thesis presents the analysis of the double differential dijet mass cross section, measured at the D0 detector in Batavia, IL, using p{bar p} collisions at a center of mass energy of (square root)s = 1.96 TeV. The dijet mass was calculated using the two highest p{sub T} jets in the event, with approximately 0.7 fb−1 of data collected between 2004 and 2005. The analysis was presented in bins of dijet mass (M{sub JJ}) and rapidity (y), and extends the measurement farther in M{sub JJ} and y than any previous measurement. Corrections due to detector effects were calculated using a Monte Carlo simulation and applied to data. The errors on the measurement consist of statistical and systematic errors, of which the Jet Energy Scale was the largest. The final result was compared to next-to-leading order theory and good agreement was found. These results may be used in the determination of the proton parton distribution functions and to set limits on new physics.
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| Total Pages | : 62 |
| Release | : 2013 |
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Download Measurement of the Differential and Double-differential Drell-Yan Cross Sections in Proton-proton Collisions at Sqrt{s} Book in PDF, ePub and Kindle
Measurements of the differential and double-differential Drell-Yan cross sections are presented using an integrated luminosity of 4.5(4.8) inverse femtobarns in the dimuon (dielectron) channel of proton-proton collision data recorded with the CMS detector at the LHC at sqrt{s} = 7 TeV. The measured inclusive cross section in the Z-peak region (60-120 GeV) is \sigma(\ell \ell) = 986.4 +/- 0.6 (stat.) +/- 5.9 (exp. syst.) +/- 21.7 (th. syst.) +/- 21.7 (lum.) pb for the combination of the dimuon and dielectron channels. Differential cross sections $d\sigma/dm$ for the dimuon, dielectron, and combined channels are measured in the mass range 15 to 1500 GeV and corrected to the full phase space. Results are also presented for the measurement of the double-differential cross section d2̂\sigma/dm d.
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| Total Pages | : 206 |
| Release | : 2011 |
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Download Measurement of the Differential Dijet Production Cross Section in Proton-proton Collisions at Book in PDF, ePub and Kindle
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.
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| Total Pages | : 61 |
| Release | : 2016 |
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Download Measurement of the Double-differential High-mass Drell-Yan Cross Section in Pp Collisions at $ \sqrt{s} Book in PDF, ePub and Kindle
This study presents a measurement of the double-differential cross section for the Drell-Yan Z/[gamma]* → l+l- and photon-induced [gamma][gamma] → l+l- processes where l is an electron or muon. The measurement is performed for invariant masses of the lepton pairs, mll, between 116 GeV and 1500 GeV using a sample of 20.3 fb-1 of pp collisions data at centre-of-mass energy of √s = 8 TeV collected by the ATLAS detector at the LHC in 2012. The data are presented double differentially in invariant mass and absolute dilepton rapidity as well as in invariant mass and absolute pseudorapidity separation of the lepton pair. The single-differential cross section as a function of mll is also reported. The electron and muon channel measurements are combined and a total experimental precision of better than 1% is achieved at low mll. A comparison to next-to-next-to-leading order perturbative QCD predictions using several recent parton distribution functions and including next-to-leading order electroweak effects indicates the potential of the data to constrain parton distribution functions. In particular, a large impact of the data on the photon PDF is demonstrated.
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| Release | : 2016 |
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Download Measurement and QCD Analysis of Double-differential Inclusive Jet Cross-sections in Pp Collisions at $\sqrt{s} Book in PDF, ePub and Kindle
A measurement of the double-differential inclusive jet cross section as a function of the jet transverse momentum $p_{\mathrm{T}}$ and the absolute jet rapidity $
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| Total Pages | : 176 |
| Release | : 2009 |
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Download Measurement of the Double Differential Diject Mass Cross Section in P$\bar{p}$ Collisions at {u221A}(s) Book in PDF, ePub and Kindle
This thesis presents the analysis of the double differential dijet mass cross section, measured at the D0 detector in Batavia, IL, using p$ar{p}$ collisions at a center of mass energy of √s = 1.96 TeV. The dijet mass was calculated using the two highest pT jets in the event, with approximately 0.7 fb-1 of data collected between 2004 and 2005. The analysis was presented in bins of dijet mass (MJJ) and rapidity (y), and extends the measurement farther in MJJ and y than any previous measurement. Corrections due to detector effects were calculated using a Monte Carlo simulation and applied to data. The errors on the measurement consist of statistical and systematic errors, of which the Jet Energy Scale was the largest. The final result was compared to next-to-leading order theory and good agreement was found. These results may be used in the determination of the proton parton distribution functions and to set limits on new physics.
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| Release | : 2017 |
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Download Measurement of Double-differential Cross Sections for Top Quark Pair Production in Pp Collisions at $\sqrt{s}$ Book in PDF, ePub and Kindle
Normalized double-differential cross sections for top quark pair (ttbar) production are measured in pp collisions at a centre-of-mass energy of 8 TeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 19.7 inverse femtobarns. The measurement is performed in the dilepton e+/- mu-/+ final state. The ttbar cross section is determined as a function of various pairs of observables characterizing the kinematics of the top quark and ttbar system. The data are compared to calculations using perturbative quantum chromodynamics at next-to-leading and approximate next-to-next-to-leading orders. They are also compared to predictions of Monte Carlo event generators that complement fixed-order computations with parton showers, hadronization, and multiple-parton interactions. Overall agreement is observed with the predictions, which is improved when the latest global sets of proton parton distribution functions are used. The inclusion of the measured ttbar cross sections in a fit of parametrized parton distribution functions is shown to have significant impact on the gluon distribution.
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| Total Pages | : 26 |
| Release | : 2016 |
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Download Measurement of the Double-differential Inclusive Jet Cross Section in Proton-proton Collisions at {u221A}s Book in PDF, ePub and Kindle
Here, a measurement of the double-differential inclusive jet cross section as a function of jet transverse momentum pT and absolute jet rapidity.
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| Total Pages | : 21 |
| Release | : 2016 |
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Download Measurement of the Inclusive Jet Cross Section in Pp Collisions at $\sqrt{s} Book in PDF, ePub and Kindle
The double-differential inclusive jet cross section is measured as a function of jet transverse momentum $p_{\mathrm {T}}$ and absolute rapidity $
| Author | : Joshua Marc Dyer |
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| Total Pages | : 202 |
| Release | : 2007 |
| Genre | : Differential cross sections |
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Download Measurement of the Diphoton Differential Cross-section in P[bar P] Collisions at [square Root] S Book in PDF, ePub and Kindle
