Kline%2C R.V.
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POLARIZATION PARAMETERS AND ANGULAR DISTRIBUTIONS IN PI+- P ELASTIC SCATTERING AT 100-GEV/C AND IN P P ELASTIC SCATTERING AT 100-GEV/C AND 300-GEV/C

Kline, R.V. ; Law, M.E. ; Pipkin, F.M. ; et al.
Phys.Rev.D 22 (1980) 553-572, 1980.
Inspire Record 158989 DOI 10.17182/hepdata.24156

Measurements of the polarization parameters and angular distributions are reported for π±p elastic scattering at 100 GeV/c and for pp elastic scattering at 100- and 300-GeV/c incident momentum. The π±p data cover the kinematic range 0.18≤−t≤1.10 GeV2 and are in agreement with current Regge-model predictions. The pp data cover the kinematic range 0.15≤−t≤1.10 GeV2 and 0.15≤−t≤2.00 GeV2 at 100 and 300 GeV/c, respectively, and are found to be consistent with absorption-model predictions.

2 data tables match query
Table 1

THESE ANGULAR DISTRIBUTIONS AND POLARIZATION PARAMETERS ARE TABULATED IN THE RECORD OF THE EARLIER BRIEF REPORT OF THIS EXPERIMENT USING PION BEAMS: I. P. AUER ET AL., PRL 39, 313 (1977).

Table 2

THESE ANGULAR DISTRIBUTIONS AND POLARIZATION PARAMETERS ARE TABULATED IN THE RECORD OF THE EARLIER BRIEF REPORT OF THIS EXPERIMENT USING A PROTON BEAM: J. H. SNYDER ET AL., PRL 41, 781 (1978) AND PRL 41, 1256(E) (1978).


Measurement of the $\pi^+ p$ and $\pi^- p$ Polarization Parameters at 100 GeV/c

Auer, I.P. ; Hill, D. ; Sandler, B. ; et al.
Phys.Rev.Lett. 39 (1977) 313, 1977.
Inspire Record 121138 DOI 10.17182/hepdata.20982

We report measurements of the polarization parameters in π+p and π−p elastic scattering at an incident momentum of 100 GeV/c. The results cover the range 0.18<~−t<~1.4 GeV2 and are in agreement with current Regge-model predictions.

3 data tables match query
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POLARIZATION AND ANGULAR DISTRIBUTIONS IN ELASTIC P P SCATTERING AT 100-GEV AND 300-GEV.

Snyder, J.H. ; Auer, I.P. ; Bruckner, W. ; et al.
Phys.Rev.Lett. 41 (1978) 781-784, 1978.
Inspire Record 132550 DOI 10.17182/hepdata.20889

Measurements of the polarization parameter and angular distributions in pp elastic scattering at incident energies of 100 and 300 GeV are reported. The data cover the kinematic range 0.18<−t<2.0 GeV2. They are found to be consistent with absorption-model predictions.

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Table 1

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Table 3

THE ANGULAR DISTRIBUTION IN THE PUBLISHED FIGURE IS NORMALIZED TO D(SIG)/DT AT -T = 0.55 GEV**2 FROM AKERLOF ET AL., PR D14, 2864 (1976).

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Electroproduction of Inclusive Pions at High Q**2

Bebek, C.J. ; Brown, C.N. ; Kline, R.V. ; et al.
Phys.Rev.D 16 (1977) 1986, 1977.
Inspire Record 5477 DOI 10.17182/hepdata.24507

This paper reports measurements of the inclusive pion electroproduction reaction e+N→e+π±+ anything with both proton and neutron targets for pions produced along and near the direction of the virtual photon. Two independent purposes of these measurements were to provide data at low ε and at high Q2. Data are reported for the (W,Q2,ε) points (2.2 GeV, 1.2 GeV2, 0.45), (2.7, 2.0, 0.35), (2.7, 3.3, 0.40), (2.7, 6.2, 0.40), and (2.7, 9.5, 0.40). The data are used to test Feynman scaling and to compare the ratio of the cross sections for charged-pion production to the quark-model predictions. The data are also used in conjunction with the data from earlier experiments to separate the scalar and transverse components of the cross section.

18 data tables match query
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Electroproduction of Protons at Large p(T)

Browman, A. ; Hanson, K.M. ; Holmes, Stephen D. ; et al.
Phys.Rev.Lett. 37 (1976) 974, 1976.
Inspire Record 109878 DOI 10.17182/hepdata.4667

We report measurements of the inclusive electroproduction reaction e+p→e+p+X for protons produced between 100° and 150° in the virtual-photon-target-proton center-of-mass system. Data were taken at the (W,Q2) points (2.2 GeV, 1.2 GeV2), (2.2, 3.6), (2.65, 1.2), (2.65, 2.0), (2.65, 2.8), (2.65, 3.6), (3.1, 1.2), and (3.1, 2.0). The invariant structure function is studied as a function of W, Q2, xT, pT2, and MX2.

32 data tables match query
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Electroproduction of Single Pions at Low Epsilon and a Measurement of the Pion Form-Factor Up to Q**2 = 10-GeV**2

Bebek, C.J. ; Brown, C.N. ; Holmes, Stephen D. ; et al.
Phys.Rev.D 17 (1978) 1693, 1978.
Inspire Record 120118 DOI 10.17182/hepdata.4472

We report measurements of the electroproduction of single charged pions from hydrogen and deuterium targets for values of ε in the range 0.35<ε<0.45. Data were taken with a hydrogen target at the (W, Q2) points (2.15 GeV, 1.2 GeV2), (2.65, 2.0), (2.65, 3.4), (2.65, 6.0), and (2.65, 10.0). Data were taken with a deuterium target at the (W, Q2) points (2.15, 1.2) and (2.65, 2.0). The transverse cross section obtained by using these data in conjunction with earlier data at high ε to separate the longitudinal and transverse components is used in conjunction with the new data and the t-channel Born term to determine the pion form factor and to re-evaluate previously reported measurements. In the range 0.15 GeV2<Q2<10.0 GeV2 the pion form factor can be described by the simple pole form [1+Q2(0.462±0.024)]−1.

46 data tables match query
Table 1

SEPARATED TRANSVERSE AND LONGITUDINAL VIRTUAL-PHOTON CROSS SECTIONS PREVIOUSLY PUBLISHED IN C. J. BEBEK ET AL., PRL 37, 1326 (1976).

Table 2

DATA POINT 1 (HYDROGEN TARGET).

Table 3

DATA POINT 1 (HYDROGEN TARGET).

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Scalar Transverse Separation for Single pi+ Electroproduction

Bebek, C.J. ; Browman, A. ; Brown, C.N. ; et al.
Phys.Rev.Lett. 37 (1976) 1326, 1976.
Inspire Record 110318 DOI 10.17182/hepdata.21075

We report measurements of the exclusive electroproduction reaction e+p→e+π++n for pions produced near 0° in the virtual-photon-proton center-of-mass system with values of ε in the range 0.35<ε<0.45. Combination with data taken at ε near 1 allows us to separate the contributions from transversely polarized and scalar photons in the range 1.2 GeV2<Q2<3.3 GeV2.

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Scalar-Transverse Separation of Electroproduced K+ Lambda and K+ Sigma0 Final States

Bebek, C.J. ; Browman, A. ; Brown, C.N. ; et al.
Phys.Rev.D 15 (1977) 3082, 1977.
Inspire Record 4932 DOI 10.17182/hepdata.24615

We present evidence for a large scalar contribution to the cross section for the reaction ep→eK+Λ. No evidence for a scalar contribution is found for the reaction ep→eK+Σ0. This is reminiscent of the results for the π+n and π+Δ0 final states.

2 data tables match query
Table 1

AVERAGED OVER PHI. FOR LOW EPSILON, SOME DEUTERIUM DATA ARE INCLUDED. INCLUDING EARLIER MEASUREMENTS AT HIGH EPSILON.

Table 2

AVERAGED OVER PHI. INCLUDING EARLIER MEASUREMENTS AT HIGHER EPSILON.


The flavor asymmetry of the light quark sea from semi-inclusive deep inelastic scattering.

The HERMES collaboration Ackerstaff, K. ; Airapetian, A. ; Akopov, N. ; et al.
Phys.Rev.Lett. 81 (1998) 5519-5523, 1998.
Inspire Record 473345 DOI 10.17182/hepdata.44248

The flavor asymmetry of the light quark sea of the nucleon is determined in the kinematic range 0.02<x<0.3 and 1 GeV^2<Q^2<10 GeV^2, for the first time from semi-inclusive deep-inelastic scattering. The quantity (dbar(x)-ubar(x))/(u(x)-d(x)) is derived from a relationship between the yields of positive and negative pions from unpolarized hydrogen and deuterium targets. The flavor asymmetry dbar-ubar is found to be non-zero and x dependent, showing an excess of dbar over ubar quarks in the proton.

1 data table match query
Table 1

The ratio of parton distribution functions (PDF) is determined from the ratio of the differencies between charged pion yields for proton and neutron targets: (N_p(pi-)-N_n(pi-))/(N_p(pi+)-N_n(pi+)).


ELECTRON SCATTERING ON HE-3 UNDER AN ANGLE OF 127-DEGREES. (IN RUSSIAN)

Akhmerov, R.V. ; Getman, V.A. ; Esaulov, A.S. ; et al.
Yad.Fiz. 45 (1987) 305-311, 1987.
Inspire Record 250499 DOI 10.17182/hepdata.41501

None

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