MEASUREMENT OF P P ---> P X BETWEEN 50-GEV/C AND 400-GEV/C.

Abe, K. ; De Lillo, T. ; Robinson, B. ; et al.
Phys.Rev.Lett. 31 (1973) 1527-1530, 1973.
Inspire Record 81796 DOI 10.17182/hepdata.50301

We present measurements of the invariant cross section for the inclusive reaction p+p→p+X in the region 0.14<|t|<0.38 GeV2, 100<s<750 GeV2, and 0.80<x<0.93.

1 data table match query

The cross sections are fitted by the formula CONST(C=A)*EXP(SLOPE*T)*(1+CO NST(C=B)/SQRT(S)).


Measurement of the Transverse Spin Dependence of the p p Total Cross-Section in the 1-GeV/c-3-GeV/c Region

Biegert, E.K. ; Buchanan, J.A. ; Clement, J.M. ; et al.
Phys.Lett.B 73 (1978) 235-238, 1978.
Inspire Record 134224 DOI 10.17182/hepdata.27471

The pp total cross section difference between pure transverse spin states was measured in the laboratory momentum range 1–3 GeV/ c . Significant differences were found and these differences show striking energy dependence. This structure is in disagreement with the predictions of simple exchange models.

2 data tables match query

No description provided.

REVISED DATA (J. D. LESIKAR, PRIV COMM, 19 JUN 1981). NOW CORRECTED FOR COULOMB-NUCLEAR INTERFERENCE. IN ADDITION, THE LOWEST MOMENTUM DATA POINT IS NOW KNOWN TO BE IN ERROR.


Energy Dependence of Spin Spin Forces in 90-degrees (Center-of-mass) Elastic $p p$ Scattering

Lin, A. ; O'Fallon, J.R. ; Ratner, L.G. ; et al.
Phys.Lett.B 74 (1978) 273-276, 1978.
Inspire Record 129169 DOI 10.17182/hepdata.27461

We measured d σ d t(90° cm ) for ↑+ p ↑→ p + p from 1.75 to 5.5 GeV/ c , using the Argonne zero-gradient synchrotron 70% polarized proton beam and a 70% polarized proton target. We found that the spin-spin correlation parameter. A nn , equals 60% at low energy, then drops sharply to about 10% near 3.5 GeV/ c , and remains constant up to 5.5 GeV/ c .

2 data tables match query

ANALYZING POWER. QUOTED ERRORS DUE TO 4.3 PCT POINT TO POINT RELATIVE ERROR.

THE SPIN-SPIN CORRELATION PARAMETER CNN IS NOW DENOTED BY ANN ACCORDING TO THE NEW ANN ARBOR CONVENTION.


Measurement of Proton Proton Elastic Scattering in Pure Initial Spin States at 11.75-GeV/c

Abe, K. ; Fernow, Richard C. ; Mulera, T.A. ; et al.
Phys.Lett.B 63 (1976) 239-244, 1976.
Inspire Record 114488 DOI 10.17182/hepdata.27638

The elastic cross section for proton proton scattering at 11.75 GeV/ c was measured at the Argonne ZGS using a 50% polarized target. In the range p ⊥ 2 =0.6 → 2.2 (GeV/ c ) 2 we obtained precise measurements of d σ d t(ij) for the ⇈ ⇊, and ⇅ initial spin states perpendicular to the scattering plane. We confirmed that the asymmetry parameter, A , decreases with energy in the diffraction peak, but is approximately energy-independent at large p ⊥ 2 . We found that the spin correlation parameter c nn acquires rather dramatic structure, and at large p ⊥ 2 seems to grow with energy.

1 data table match query

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Spin Spin Interactions in High p-Transverse**2 Elastic p p Scattering

O'Fallon, J.R. ; Ratner, L.G. ; Schultz, P.F. ; et al.
Phys.Rev.Lett. 39 (1977) 733, 1977.
Inspire Record 5637 DOI 10.17182/hepdata.20968

We measured dσdt for p+p→p+p at 11.75 GeV/c using the zero-gradient synchrotron 70% polarized-proton beam and a 65% polarized-proton target. We obtained the spin-orbit asymmetry parameter A and the spin-spin correlation parameter Cm out to P⊥2=4.2 (GeV/c)2. We found that A drops smoothly towards zero, but that Cnn increases abruptly near P⊥2=3.6 (GeV/c)2, where the exp(−1.4P⊥2) component of elastic scattering becomes dominant. This suggests that large-P⊥2 "hard" elastic scattering may occur mostly when the two proton spins are parallel.

1 data table match query

No description provided.


Determination of Triple Regge Couplings from a Study of the Reaction p p -> p X between 50-GeV and 400-GeV

Abe, K. ; De Lillo, T. ; Robinson, B. ; et al.
Phys.Rev.Lett. 31 (1973) 1530, 1973.
Inspire Record 82045 DOI 10.17182/hepdata.21356

We present an analysis, in the framework of the triple Regge model, of our recent experimental results on the reaction p+p→p+X between 50 and 400 GeV.

2 data tables match query

The cross sections is fitted in the framework of the triple Regge model. The symbols P and R in the (C=...) denote pomeron and reggeon, respectively. For fit I and II the authors used conventional trajectories alpha(P) = 1 +0.25*T, alpha(R) = 0.5 + T. Fit II is restricted to data with (1 - M(P=4)**2/S) > 0.84. In fit III they use alpha(R) = 0.2 + T for the RRP term. Fit IV is like fit I with additional fixed (pion pion P) term.

The cross sections is fitted in the farmework of the triple Regge model. The symbols P and R in teh (C=...) denote pomeron and reggeon, respectively. CONST(C=C) and SLOPE are from the replacement of the RRP term by the exponential one : CONST(C=C)*(SLOPE*(1-x)). See text for detail.


Differential cross sections for elastic pi+ p scattering between 1.2 and 2.3 GeV/c

Abe, K. ; Barnett, B.A. ; Goldman, J.H. ; et al.
Phys.Rev.D 10 (1974) 3556-3572, 1974.
Inspire Record 97248 DOI 10.17182/hepdata.238

Differential cross sections for π+p elastic scattering in the momentum region 1.2 to 2.3 GeV/c are presented for the center-of-mass angular range 0.9>cosθ>−0.9. Typically, 50 000 events were obtained at each of 16 momenta using magnetostrictive-readout wire spark chambers to detect the particles scattered from a liquid hydrogen target. The results are compared to those of the CERN-71 phase-shift analysis. The well-known dips at t≅−0.7 (GeV/c)2 and at u′=−0.2 (GeV/c)2 are observed. In addition, structure is seen at constant u′=−1.3 (GeV/c)2. The results of a pion attenuation study in iron are also presented.

18 data tables match query

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Precision determination of the neutron spin structure function g1(n).

The E154 collaboration Abe, K. ; Akagi, T. ; Anderson, B.D. ; et al.
Phys.Rev.Lett. 79 (1997) 26-30, 1997.
Inspire Record 443170 DOI 10.17182/hepdata.19559

We report on a precision measurement of the neutron spin structure function $g^n_1$ using deep inelastic scattering of polarized electrons by polarized ^3He. For the kinematic range 0.014&lt;x&lt;0.7 and 1 (GeV/c)^2&lt; Q^2&lt; 17 (GeV/c)^2, we obtain $\int^{0.7}_{0.014} g^n_1(x)dx = -0.036 \pm 0.004 (stat) \pm 0.005 (syst)$ at an average $Q^2=5 (GeV/c)^2$. We find relatively large negative values for $g^n_1$ at low $x$. The results call into question the usual Regge theory method for extrapolating to x=0 to find the full neutron integral $\int^1_0 g^n_1(x)dx$, needed for testing quark-parton model and QCD sum rules.

3 data tables match query

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High (p-Transverse)**2 p p Elastic Scattering in Pure Initial Spin States

Miettinen, H.E. ; Abe, K. ; Fernow, Richard C. ; et al.
Phys.Rev.D 16 (1977) 549, 1977.
Inspire Record 5158 DOI 10.17182/hepdata.24479

We measured the cross section for proton-proton elastic scattering at 11.75 GeV/c using the Zero Gradient Synchrotron 52% polarized proton beam and a 60% polarized proton target. We measured dσdt(ij) in the ↑↑, ↓↓, and ↑↓ initial spin states perpendicular to the scattering plane in the range P⊥2=2.0−3.6 (GeV/c)2. We found that the asymmetry parameter A decreases smoothly with increasing P⊥2 in this range, and that the spin-spin correlation parameter Cnn may have a minimum near P⊥2=3 (GeV/c)2.

1 data table match query

No description provided.


Wide Angle Differential Cross-Sections for Elastic Proton Proton Scattering in the Region of Delta (1236) Production

Abe, K. ; Barnett, B.A. ; Goldman, J.H. ; et al.
Phys.Rev.D 12 (1975) 1-5, 1975.
Inspire Record 103521 DOI 10.17182/hepdata.24866

Differential cross sections for p−p elastic scattering are presented with scattering angles in the center-of-mass system greater than 35° to 50°. The data were obtained at incident laboratory momenta 0.857, 1.091, 1.210, 1.374, 1.405, and 1.501 GeV/c. This spans the region of the onset of Δ(1236) production and where a possible spin-singlet D-wave resonance is indicated in an analysis of earlier data.

1 data table match query

No description provided.