Bradamante, F.
Proton-Proton Scattering
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Measurement of the Polarization of the Proton Proton Elastic Reaction at Small Scattering Angles Between 940-{MeV} and 2440-{MeV}

Dalla Torre-Colautti, S. ; Birsa, R. ; Bradamante, F. ; et al.
Nucl.Phys.A 505 (1989) 561-582, 1989.
Inspire Record 288841 DOI 10.17182/hepdata.36886

We have measured the asymmetry of elastic pp scattering at small scattering angles (30–100 mrad) in the Coulomb-nuclear interference region, using the polarized proton beam of Saturne II, a segmented scintillator active target, and two telescopes of multiwire proportional chambers. Results are given at four energies — 940, 1000, 1320 and 2440 MeV-and are compared with phase-shift calculations.

4 data tables match query
Table 1

No description provided.

Table 2

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Evidence for Spin Effects in $p p$ Elastic Scattering at 150-{GeV}/$c$

Fidecaro, G. ; Fidecaro, M. ; Nurushev, S. ; et al.
Phys.Lett.B 76 (1978) 369-373, 1978.
Inspire Record 130230 DOI 10.17182/hepdata.27444

Proton elastic scattering off a polarized proton target has been measured at 150 GeV/ c , in the |; t |-range 0.2–3.0 GeV 2 . The results on polarization and differential cross section are presented.

2 data tables match query
Table 1

No description provided.

Table 2

No description provided.


Measurement of the Differential Cross-section and of the Polarization Parameter in $p p$ Elastic Scattering at 200-{GeV}/$c$

Fidecaro, G. ; Fidecaro, M. ; Lanceri, L. ; et al.
Phys.Lett.B 105 (1981) 309-314, 1981.
Inspire Record 167031 DOI 10.17182/hepdata.31055

Data are given for the polarization parameter and for the differential cross section in pp elastic scattering at 200 GeV/ c , in the range 0.5 ⪕−t ⪕ 4.0 GeV 2 . The polarization changes sign in the dip region, as already observed at 150 GeV/ c .

2 data tables match query
Table 1

No description provided.

Table 2

No description provided.


Measurement of the Polarization Parameter in p p Elastic Scattering at 150-{GeV}/c

Fidecaro, G. ; Fidecaro, M. ; Lanceri, L. ; et al.
Nucl.Phys.B 173 (1980) 513-545, 1980.
Inspire Record 152999 DOI 10.17182/hepdata.34464

The polarization parameter in pp elastic scattering at 150 GeV/ c , and in the momentum transfer interval 0.4 ⩽ − t ⩽ 3.0 GeV 2 , has been measured in an MWPC and scintillation counter experiment at the CERN SPS using a polarized proton target. The polarization is decreasing steadily from zero to ≈ − 10% in the range 0.4 < − t < 1.3 GeV 2 ; for higher | t | the data suggests a change of sign. Results are also given for the differential cross section, which exhibits a small dip at − t = (1.46 ± 0.01) GeV.

2 data tables match query
Table 1

No description provided.

Table 2

No description provided.


Observation of Longitudinal Event Structure in Proton Diffractive Dissociation at the {ISR}

The R608 collaboration Smith, A.M. ; Meritet, L. ; Reyrolle, M. ; et al.
Phys.Lett.B 167 (1986) 248-254, 1986.
Inspire Record 219984 DOI 10.17182/hepdata.30272

We study the internal structure of a forward-going pπ + π − π + π − system, with invariant mass in the range 2.5-4 GeV, produced through diffractive dissociation of a beam proton at the ISR. The shape of the system, as seen in its center-of-mass, deviates strongly from isotropic phase space and possesses, rather, a longitudinal structure with a major axis along the incoming proton direction. The final state proton momentum is aligned in the direction of the incoming proton, an effect which becomes more pronounced with increasing diffractive mass.

2 data tables match query
Table 1

Acceptance corrected distribution of momentum transfer to the diffractive (p-4pi) system. Data requested from authors.

Table 2

No description provided.


OBSERVATION OF POLARIZATION IN DIFFRACTIVE DISSOCIATION p ---> LAMBDA0 K+ AT THE CERN ISR

Erhan, S. ; Hayes, K. ; Smith, A.M. ; et al.
62-65, 1984.
Inspire Record 202932 DOI 10.17182/hepdata.49652

None

1 data table match query
Table 1

No description provided.


The s Dependence of Double Diffraction Dissociation of Protons at the CERN Intersecting Storage Rings

Goggi, G. ; Mantovani, G.C. ; Cavalli-Sforza, M. ; et al.
Phys.Lett.B 72 (1977) 261-264, 1977.
Inspire Record 121797 DOI 10.17182/hepdata.27507

We report results on a new measurement of the double diffractive reaction pp → (p π + π − ) (p π + π − ) at the ISR obtained with the Split Field Magnet detector. Experimental procedures and data analysis are discussed in detail. The cross section measured at the five standard ISR energies exhibits an increase of (55 ± 7)% in the s -range from 549 to 3892 GeV 2 .

1 data table match query
Table 1

DOUBLE DIFFRACTION DISSOCIATION OF PROTONS.


Study of Charge-Exchange Double Dissociation of Protons at the CERN Intersecting Storage Rings

Goggi, G. ; Mantovani, G.C. ; Cavalli-Sforza, M. ; et al.
Phys.Lett.B 72 (1977) 265-268, 1977.
Inspire Record 121784 DOI 10.17182/hepdata.27505

We have measured the charge-exchange reaction pp → (p π + ) (p π − ) at s = 23, 31, 45, 53, and 63 GeV at the ISR, using the Split Field Magnet detector. The data are characterized by a sharp forward peak of width 0.02 (GeV/ c ) 2 , followed by a much gentler slope at higher | t |; sizeable Δ ++ , Δ 0 , and N 0 production is observed in the (Nπ) mass spectra. Two different components are present in the data following power-law energy dependence of the type p lab − n with n 1 = −1.63 ± 0.13 and n 2 = −0.96 ± 0.07, respectively, indicating the onset of mechanisms in competition with pion exchange at ISR energies.

1 data table match query
Table 1

CHARGE EXCHANGE DOUBLE DIFFRACTION DISSOCIATION OF PROTONS. DEL++, DEL0, N(1520)0 AND N(1688)0 RESONANCES IDENTIFIED IN PROTON-PION MASS SPECTRA.


Double diffractive cross-section measurement in the forward region at LHC

The TOTEM collaboration Antchev, G. ; Aspell, P. ; Atanassov, I. ; et al.
Phys.Rev.Lett. 111 (2013) 262001, 2013.
Inspire Record 1251897 DOI 10.17182/hepdata.64889

The first double diffractive cross-section measurement in the very forward region has been carried out by the TOTEM experiment at the LHC with center-of-mass energy of sqrt(s)=7 TeV. By utilizing the very forward TOTEM tracking detectors T1 and T2, which extend up to |eta|=6.5, a clean sample of double diffractive pp events was extracted. From these events, we measured the cross-section sigma_DD =(116 +- 25) mub for events where both diffractive systems have 4.7 <|eta|_min < 6.5 .

2 data tables match query
Table 1

Visible double diffractive cross-section measurements in the forward region. See paper for details of the nomenclature.

Table 2

True eta_min corrected double diffractive cross-section measurements in the forward region. See paper for details of the nomenclature.


Inelastic Diffractive Scattering at FNAL Energies

Ayres, D.S. ; Diebold, Robert E. ; Cutts, D. ; et al.
Phys.Rev.Lett. 37 (1976) 1724, 1976.
Inspire Record 109174 DOI 10.17182/hepdata.21057

Inelastic differential cross sections have been measured for π±p, K±p, and p±p at 140- and 175-GeV/c incident momentum over a |t| range from 0.05 to 0.6 GeV2 and covering a missing-mass region from 2.4 to 9 GeV2. For Mx2 greater than 4 GeV2, the invariant quantity Mx2d2σdtdMx2 was found to be independent of Mx2 at fixed t and could be adequately described by a simple triple-Pomeron form. The values obtained for the triple-Pomeron couplings are identical within statistics for all channels.

1 data table match query
Table 1

Data from 140 GeV and 175 GeV are combined. The distributions are fit to CONST*(SLOPE(C=1)*T+SLOPE(C=2)*T**2).