Chen, Cheng
Double Differential Cross Section
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J/psi production at high transverse momentum in p+p and Cu+Cu collisions at \sNN=200GeV

The STAR collaboration Abelev, B.I. ; Aggarwal, M.M. ; Ahammed, Z. ; et al.
Phys.Rev.C 80 (2009) 041902, 2009.
Inspire Record 817120 DOI 10.17182/hepdata.55733

The STAR collaboration at RHIC presents measurements of \Jpsi$\to{e^+e^-}$ at mid-rapidity and high transverse momentum ($p_T>5$ GeV/$c$) in \pp and central \cucu collisions at \sNN = 200 GeV. The inclusive \Jpsi production cross section for \cucu collisions is found to be consistent at high $p_T$ with the binary collision-scaled cross section for \pp collisions, in contrast to previous measurements at lower $p_T$, where a suppression of \Jpsi production is observed relative to the expectation from binary scaling. Azimuthal correlations of $J/\psi$ with charged hadrons in \pp collisions provide an estimate of the contribution of $B$-meson decays to \Jpsi production of $13% \pm 5%$.

8 data tables
Table 1

J/psi differential production cross section in sqrt(s).

Table 2

J/psi transverse momentum distribution in sqrt(s).

Table 3

J/psi transverse momentum distribution in sqrt(s).

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rivet Analysis
Measurement of the Inclusive Jet Cross Section at the Fermilab Tevatron p-pbar Collider Using a Cone-Based Jet Algorithm

The CDF collaboration Aaltonen, T. ; Adelman, Jahred A. ; Akimoto, T. ; et al.
Phys.Rev.D 78 (2008) 052006, 2008.
Inspire Record 790693 DOI 10.17182/hepdata.52402

We present a measurement of the inclusive jet cross section in p-pbar collisions at sqrt{s}=1.96 TeV based on data collected by the CDF II detector with an integrated luminosity of 1.13 fb^-1. The measurement was made using the cone-based Midpoint jet clustering algorithm in the rapidity region of |y|<2.1. The results are consistent with next-to-leading-order perturbative QCD predictions based on recent parton distribution functions (PDFs), and are expected to provide increased precision in PDFs at high parton momentum fraction x. The results are also compared to the recent inclusive jet cross section measurement using the k_T jet clustering algorithm, and we find that the ratio of the cross sections measured with the two algorithms is in agreement with theoretical expectations over a large range of jet transverse momentum and rapidity.

11 data tables
Table 1

Measured inclusive jet cross section as a function of jet transverse momentum in the absolute rapidity region < 0.1. The bin-by-bin correction factors from parton to hadron-level are also tabulated.

Table 2

Measured inclusive jet cross section as a function of jet transverse momentum in the absolute rapidity region 0.1 to 0.7. The bin-by-bin correction factors from parton to hadron-level are also tabulated.

Table 3

Measured inclusive jet cross section as a function of jet transverse momentum in the absolute rapidity region 0.7 to 1.1. The bin-by-bin correction factors from parton to hadron-level are also tabulated.

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Experimental study of exclusive H-2(e,e' p)n reaction mechanisms at high Q**2.

The CLAS collaboration Egiyan, K.S. ; Asryan, G. ; Gevorgyan, N. ; et al.
Phys.Rev.Lett. 98 (2007) 262502, 2007.
Inspire Record 741920 DOI 10.17182/hepdata.41751

The reaction $^2$H$(e,e^\prime p)n$ has been studied with full kinematic coverage for photon virtuality $1.75<Q^2<5.5$ GeV$^2$. Comparisons of experimental data with theory indicate that for very low values of neutron recoil momentum ($p_n<100$ MeV/c) the neutron is primarily a spectator and the reaction can be described by the plane-wave impulse approximation. For $100<p_n<750$ MeV/c proton-neutron rescattering dominates the cross section, while $\Delta$ production followed by the $N\Delta \to NN$ transition is the primary contribution at higher momenta.

4 data tables
Table 1

Recoil neutron momentum distributions.

Table 2

Recoil neutron angular distributions for neutron momenta in the range 400 to 600 MeV.

Table 3

Recoil neutron angular distributions for neutron momenta in the range 200 to 300 MeV.

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rivet Analysis
Measurement of the Inclusive Jet Cross Section using the k(T) algorithm in p anti-p collisions at s**(1/2) = 1.96-TeV with the CDF II Detector

The CDF collaboration Abulencia, A. ; Adelman, Jahred A. ; Affolder, Anthony Allen ; et al.
Phys.Rev.D 75 (2007) 092006, 2007.
Inspire Record 743342 DOI 10.17182/hepdata.41748

We report on measurements of the inclusive jet production cross section as a function of the jet transverse momentum in pp-bar collisions at sqrt{s} = 1.96 TeV}, using the k_T algorithm and a data sample corresponding to 1.0 fb^-1 collected with the Collider Detector at Fermilab in Run II. The measurements are carried out in five different jet rapidity regions with |yjet| < 2.1 and transverse momentum in the range 54 < \ptjet < 700 GeV/c. Next-to-leading order perturbative QCD predictions are in good agreement with the measured cross sections.

7 data tables
Table 1

Measured inclusive jet differential cross section as a function of PT for the rapidity range -0.1 to 0.1 with the jet resolution parameter D = 0.7.

Table 2

Measured inclusive jet differential cross section as a function of PT for the absoloute rapidity range 0.1 to 0.7 with the jet resolution parameter D = 0.7.

Table 3

Measured inclusive jet differential cross section as a function of PT for the absolute rapidity range 0.7 to 1.1 with the jet resolution parameter D = 0.7.

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rivet Analysis
Measurement of the inclusive jet cross section in p anti-p interactions at s**(1/2) = 1.96-TeV using a cone-based jet algorithm

The CDF collaboration Abulencia, A. ; Acosta, D. ; Adelman, J. ; et al.
Phys.Rev.D 74 (2006) 071103, 2006.
Inspire Record 699933 DOI 10.17182/hepdata.41844

We present a measurement of the inclusive jet cross section in ppbar interactions at sqrt{s}=1.96 TeV using 385 pb^{-1} of data collected with the CDF II detector at the Fermilab Tevatron. The results are obtained using an improved cone-based jet algorithm (Midpoint). The data cover the jet transverse momentum range from 61 to 620 GeV/c, extending the reach by almost 150 GeV/c compared with previous measurements at the Tevatron. The results are in good agreement with next-to-leading order perturbative QCD predictions using the CTEQ6.1M parton distribution functions.

2 data tables
Table 1

The inclusive jet cross section corrected to the hadron level.

Table 2

The inclusive jet cross section corrected to the parton level.


Measurement of the inclusive jet cross section using the k(T) algorithm in p anti-p collisions at s**(1/2) = 1.96-TeV

The CDF collaboration Abulencia, A. ; Acosta, D. ; Adelman, J. ; et al.
Phys.Rev.Lett. 96 (2006) 122001, 2006.
Inspire Record 701218 DOI 10.17182/hepdata.42758

We report on a measurement of the inclusive jet production cross section in pp-bar collisions at sqrt{s} = 1.96 TeV using data collected with the upgraded Collider Detector at Fermilab in Run II (CDF II) corresponding to an integrated luminosity of 385 pb^-1. Jets are reconstructed using the kt algorithm. The measurement is carried out for jets with rapidity 0.1 &lt; | yjet | &lt; 0.7 and transverse momentum in the range 54 &lt; ptjet &lt; 700 GeV/c. The measured cross section is in good agreement with next-to-leading order perturbative QCD predictions after the necessary non-perturbative parton-to-hadron corrections are included.

1 data table
Table 1

Measured jet differential cross section as a function of PT.


Direct photon cross section with conversions at CDF

The CDF collaboration Acosta, D. ; Affolder, T. ; Albrow, M.G. ; et al.
Phys.Rev.D 70 (2004) 074008, 2004.
Inspire Record 648506 DOI 10.17182/hepdata.42869

We present a measurement of the isolated direct photon cross section in p-pbar collisions at sqrt(s) = 1.8 TeV and |eta| &lt; 0.9 using data collected between 1994 and 1995 by the Collider Detector at Fermilab (CDF). The measurement is based on events where the photon converts into an electron-positron pair in the material of the inner detector, resulting in a two-track event signature. To remove pi0 -> gamma gamma and eta -> gamma gamma events we use a new background subtraction technique which takes advantage of the tracking information available in a photon conversion event. We find that the shape of the cross section as a function of pT is poorly described by next-to-leading-order QCD predictions, but agrees with previous CDF measurements.

1 data table
Table 1

Axis error includes +- 28/18 contribution (Correlated systematic error included in quadrature in the systematic errors.).


Backward electroproduction of pi0 mesons on protons in the region of nucleon resonances at four momentum transfer squared Q**2 = 1.0-GeV**2.

The JLab Hall A collaboration Laveissiere, G. ; Degrande, N. ; Jaminion, S. ; et al.
Phys.Rev.C 69 (2004) 045203, 2004.
Inspire Record 625669 DOI 10.17182/hepdata.25226

Exclusive electroproduction of pi0 mesons on protons in the backward hemisphere has been studied at Q**2 = 1.0 GeV**2 by detecting protons in the forward direction in coincidence with scattered electrons from the 4 GeV electron beam in Jefferson Lab's Hall A. The data span the range of the total (gamma* p) center-of-mass energy W from the pion production threshold to W = 2.0 GeV. The differential cross sections sigma_T+epsilon*sigma_L, sigma_TL, and sigma_TT were separated from the azimuthal distribution and are presented together with the MAID and SAID parametrizations.

12 data tables
Table 1

Cross section SIG(T) + EPSILON*SIG(L) for COS(THETA*) = -0.975.

Table 2

Cross section SIG(T) + EPSILON*SIG(L) for COS(THETA*) = -0.925.

Table 3

Cross section SIG(T) + EPSILON*SIG(L) for COS(THETA*) = -0.875.

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rivet Analysis
Measurement of inclusive monmentum spectra and multiplicity distributions of charged particles at s**(1/2) approx. 2-GeV to 5-GeV.

The BES collaboration Dunwoodie, W. ; Bai, J.Z. ; Ban, Y. ; et al.
Phys.Rev.D 69 (2004) 072002, 2004.
Inspire Record 622224 DOI 10.17182/hepdata.22183

Inclusive momentum spectra and multiplicity distributions of charged particles measured with BESII detector at center of mass energies of 2.2,2.6,3.0,3.2,4.6 and 4.8 GeV are presented. Values of the second binomial moment, $R_2$, obtained from the multiplicity distributions are reported. These results are compared with both experimental data from high energy $e^+e^-$, $ep$ and $p\bar{p}$ experiments and QCD calculations.

12 data tables
Table 1

Measured xi =-ln(2p/sqrt(s)) spectra for centre of mass energy 2.2 GeV.. Errors are statistical and systematic added in quadrature.

Table 2

Measured xi =-ln(2p/sqrt(s)) spectra for centre of mass energy 2.6 GeV.. Errors are statistical and systematic added in quadrature.

Table 3

Measured xi =-ln(2p/sqrt(s)) spectra for centre of mass energy 3.0 GeV.. Errors are statistical and systematic added in quadrature.

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Cross-section for forward J / psi production in p anti-p collisions at S = 1.8-TeV

The CDF collaboration Acosta, D. ; Affolder, T. ; Akimoto, H. ; et al.
Phys.Rev.D 66 (2002) 092001, 2002.
Inspire Record 603674 DOI 10.17182/hepdata.22217

The inclusive cross section for J/ψ production times the branching ratio B(J/ψ→μ+μ−) has been measured in the forward pseudorapidity region: B×dσ[p¯+p→J/ψ(pT>10GeV/c,2.1<|η|<2.6)+X]/dη=192±9(stat)±29(syst)pb. The results are based on 74.1±5.2pb−1 of data collected by the CDF Collaboration at the Fermilab Tevatron Collider. The measurements extend earlier measurements of the D0 Collaboration to higher pTJ/ψ. In the kinematic range where the experiments partially overlap, these data are in good agreement with previous measurements.

2 data tables
Table 1

The integrated cross section for J/PSI --> MU+ MU- decay.

Table 2

Cross section as a function of PT. Statistical errors only.