p p: cross section
Top PDF p p: cross section:
Measurement of the inclusive $t\bar{t}$ production cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV and determination of the top quark pole mass
... IX. SYSTEMATIC UNCERTAINTIES Systematic uncertainties are assessed by varying the values of a specific parameter in the modeling of the data, and determining the effect on the distributions or MC templates of the ...
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Inclusive cross section and double helicity asymmetry for pi^0 production in p+p collisions at sqrt(s) = 62.4 GeV
... polarized p + p collisions at √ s = ...Unpolarized cross section results are measured for transverse momenta p T = ...for p T = 1 to 4 GeV/c and probe the higher range of Bjorken ...
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Measurement of the $t\bar{t}$ Production Cross Section in $p\bar{p}$ Collisions at $\sqrt{s} = 1.96$ TeV using Kinematic Characteristics of Lepton + Jets Events
... constructed, the discriminant function peaks near zero for the background, and near unity for the signal. We modeled it using simulated t¯ t and W +jets events, and a data sample selected by requiring that the leptons ...
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Inclusive cross section and single-transverse-spin asymmetry for very forward neutron production in polarized p+p collisions at sqrt(s)=200 GeV
... the cross section and single trans- verse spin asymmetry, A N , for very forward neutron production in polarized p+p collisions at √ s=200 ...production cross section at RHIC ...
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Measurement of the $p\bar{p} \to t\bar{t} + X$ production cross section at $sqrt{s}$=1.96 TeV in the fully hadronic decay channel
... diction (line histogram) and the signal+background dis- tribution (dashed histogram) [9, 14]. The cross section was calculated from the number of t¯ t and background candidates above a cut value of the N N ...
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Cross section and double helicity asymmetry for eta mesons and their comparison to neutral pion production in p+p collisions at sqrt(s)=200 GeV
... Since hadrons are slower than photons, an additional time of flight cut is used for photon identification. Fur- thermore, the cluster must not be associated with a hit from a charged particle in the Pad Chamber (PC3) ...
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Measurement of the t$\bar t$ production cross section in $\bar p$p collisions at $\sqrt s$ = 1.96 TeV using secondary vertex b tagging
... D. Observed and Predicted Numbers of Tagged Events The numbers of observed and predicted single and dou- ble tagged events are summarized in Tables IX and X, respectively. Figure 11 shows the observed number of tagged ...
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Inclusive cross section and double helicity asymmetry for \pi^0 production in p+p collisions at sqrt(s)=200 GeV: Implications for the polarized gluon distribution in the proton
... production cross section at √s = 200 GeV as a function of pT (squares) and the results of NLO pQCD calculations for theory scales µ = pT /2 (dotted line), pT (solid line) and 2pT (dashed line), see text for ...
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Measurement of the differential $\gamma+2~b$-jet cross section and the ratio $\sigma$($\gamma+2~b$-jets)/$\sigma$($\gamma+b$-jet) in $p\bar{p}$ collisions at $\sqrt{s}$=1.96 TeV
... duction cross section differentially as a function of p γ T for photons with rapidities |y γ | < ...< p γ T < 200 GeV, while the b jets are required to have p jet T > 15 GeV ...
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Measurement of the WW production cross section in $p\overline{p}$ collisions at $\sqrt{s}$ = 1.96 TeV
... The efficiency for W W signal events to pass the ac- ceptance and kinematic criteria is determined using the pythia 6.2 [8] event generator followed by a detailed geant -based [9] simulation of the DØ detector. All trig- ...
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Measurement of the $t\bart$ production cross section in $p\barp$ collisions at $\sqrt{s}$ = 1.96 TeV using kinematic characteristics of lepton + jets events
... C. Optimization of the discriminant function The optimization procedure, determining which com- bination of topological input variables will form the fi- nal discriminant function, is performed by estimating the expected ...
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Measurement of prompt-production cross-section ratio $\sigma(\chi_{c2})/\sigma(\chi_{c1})$ in $p$Pb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV
... 5 Systematic uncertainties The systematic uncertainties on the cross-section ratios are determined as follows. A systematic uncertainty on the signal extraction is determined by varying the models used in ...
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Measurement of the ratio of the $p\bar{p}\to W$+$c$-jet cross section to the inclusive $p\bar{p}\to W$+jets cross section
... sources. Processes with light-quark (u, d or s) initi- ated jets recoiling against the W boson can produce a small fraction of charge-correlated µ-tagged jets owing to leading particle effects [15]. Background from W W ...
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Measurement of the $WZ\rightarrow \ell\nu\ell\ell$ cross section and limits on anomalous triple gauge couplings in $p\bar{p}$ collisions at $\sqrt{s}$ = 1.96 TeV
... with p T > 15 GeV that originate from the same vertex and separated from each other by at least ∆R = p(∆φ) 2 + (∆η) 2 > ...high p T lep- tons from the decay of the heavy gauge bosons the ...
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Cross Section and Parity Violating Spin Asymmetries of W^+/- Boson Production in Polarized p+p Collisions at sqrt(s)=500 GeV
... In order to determine the longitudinal spin asymmetry with a sample of W decays with minimal background con- tamination, two additional requirements were imposed on the candidate events. An isolation cut requiring the ...
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Cross section and transverse single-spin asymmetry of η mesons in p↑+p collisions at s√=200 GeV at forward rapidity
... in p T and pseudorapidity to mimic the measured data ...for p T smearing effects on an exponential spectrum, and for the falling pseudorapidity dependence in the forward ...
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Measurement of the differential cross section d\sigma/dt in elastic $p\bar{p}$ scattering at sqrt(s)=1.96 TeV
... by p (p) halo if one or both of the two p (p) detectors of an elastic combination have hits in their early time ...the p halo or the p halo timing ...with p halo and ...
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Measurement of the $\eta_c (1S)$ production cross-section in proton-proton collisions via the decay $\eta_c (1S) \rightarrow p \bar{p}$
... J.M. Otalora Goicochea 2 , P. Owen 53 , A. Oyanguren 64 , B.K. Pal 59 , A. Palano 13,c , F. Palombo 21,u , M. Palutan 18 , J. Panman 38 , A. Papanestis 49,38 , M. Pappagallo 51 , L.L. Pappalardo 16,f , C. Parkes ...
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Measurement of three-jet differential cross sections d sigma-3jet / d M-3jet in p anti-p collisions at sqrt(s)=1.96 TeV
... In addition to the MSTW2008NLO PDFs, Fig. 2 shows also predictions for CT10 PDFs [9] and the correspond- ing value of α s (M Z ) = 0.118, normalized by the pre- dictions for MSTW2008NLO and represented by the solid ...
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Comparison of $pp$ and $p \bar{p}$ differential elastic cross sections and observation of the exchange of a colorless $C$-odd gluonic compound
... and p¯ p elastic cross sections at the OP could be modified if an odderon exists [1, ...and p¯ p cross sections would only occur if the pp total cross section were ...
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