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 ...
21
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 ...
10
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 ...
7
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 ...
17
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 ...
10
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) ...
10
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 ...
25
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 ...
7
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 ...
10
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- ...
7
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 ...
24
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 ...
19
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 ...
10
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 ...
8
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 ...
6
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 ...
21
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 ...
13
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 ...
22
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 ...
10
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 ...
9