Eigen, G.
DSIG/DT
[2.0, 5.0]
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Forward peak in $\pi^+$ photoproduction

Buschhorn, G. ; Heide, P. ; Kötz, U. ; et al.
Phys.Lett.B 25 (1967) 622-623, 1967.
Inspire Record 1392927 DOI 10.17182/hepdata.29549

The π+—photoproduction cross section is found to have a peak in the forward direction in disagreement with simple Regge pole models.

1 data table
Table 1

No description provided.


Proton-proton small angle scattering and total cross section of 10.0 GeV⧸c

Bellettini, G. ; Cocconi, G. ; Diddens, A.N. ; et al.
Phys.Lett. 19 (1966) 705-705, 1966.
Inspire Record 1389783 DOI 10.17182/hepdata.782

None

3 data tables
Table 1

No description provided.

Table 2

Axis error includes +- 0.0/0.0 contribution.

Table 3

No description provided.


The charge exchange $K^- + p \to K^0 + n$ at 9.50 GeV/c

Astbury, P. ; Finocchiaro, G. ; Michelini, A. ; et al.
Phys.Lett. 16 (1965) 328-331, 1965.
Inspire Record 1389639 DOI 10.17182/hepdata.30381

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Elastic scattering and polarisation in 3.0 and 3.6 GeV/c antiproton-proton collisions

Escoubès, B. ; Fedrighini, A. ; Goldschmidt-Clermont, Y. ; et al.
Phys.Lett. 5 (1963) 132-136, 1963.
Inspire Record 1389108 DOI 10.17182/hepdata.751

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Study of the reaction pi- p --> omega n at 3, 8, 6 and 8 GeV/c

Apel, W.D. ; Ausländer, J. ; Müller, H. ; et al.
Phys.Lett.B 55 (1975) 111-116, 1975.
Inspire Record 1388800 DOI 10.17182/hepdata.27881

Results are given for the production differential cross sections and the ω decay angular distribution in terms of the ω spin density matrix elements.

3 data tables
Table 1

PAPER ALSO GIVES OFF-DIAGONAL ELEMENTS OF THE ERROR COVARIANCE MATRIX.

Table 2

PAPER ALSO GIVES OFF-DIAGONAL ELEMENTS OF THE ERROR COVARIANCE MATRIX.

Table 3

No description provided.


The Charge Form Factor of the Proton at a Momentum Transfer of 75 F$^-^2$

Bartel, W. ; Dudelzak, B. ; Krehbiel, H. ; et al.
Phys.Lett.B 25 (1967) 236-237, 1967.
Inspire Record 1333753 DOI 10.17182/hepdata.29448

The proton form factors GE(q2) and GM(q2) are determined at q2 = 75fm−2.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Elastic Electron-Proton Scattering at Momentum Transfers up to 110 Fermi$^−^2$

Behrend, H.J. ; Brasse, F.W. ; Engler, J. ; et al.
Nuovo Cim.A 48 (1967) 140-164, 1967.
Inspire Record 1185336 DOI 10.17182/hepdata.1060

Using the internal beam of DESY elastic electron-proton cross-sections were measured at various angles between 32° and 130°, and with momentum transfers ofq 2=39, 60, 80 and 110 fm−2. Two single-quadrupole spectrometers, movable around a common liquid-hydrogen target, were used for analysing the momentum of the scattered electrons. Čerenkov and shower counters discriminated against pion and low-energy background. As a cross-section reference, recoil protons from elastic scattering atq 2=10 fm−2 were used, with a quantameter serving as an intermediate monitor. The data are consistent with the Rosenbluth formula, giving real form factorsG E andG M . Both continue to decrease with increasing momentum transfer, but somewhat faster than indicated by measurements performed so far.

9 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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A bubble chamber study of proton-proton interactions at 4 GeV/c Part I—Elastic scattering, single-pion and deuteron production

Ooletti, S. ; Kidd, J. ; Mandelli, L. ; et al.
Nuovo Cim.A 49 (1967) 479-498, 1967.
Inspire Record 1185329 DOI 10.17182/hepdata.981

Elastic scattering, single-pion and deuteron production have been investigated. The cross-section for elastic scattering is σelastic = (13.5±0.3) mb. The angular distribution has been fitted to dσ/d|t|=(dσ/d|t|)0 e −bt in the region of low values oft. The best fit givesb=(6.7±0.5) (GeV/c)−2 and (dσ/d|t|)0=(91±5) mb(GeV/c)−2. The cross-sections for ppπ0, pnπ+ reactions are respectively (2.6±0.3) mb and (9.7±0.4) mb. These reactions are dominated by the (3/2, 3/2) nucleonpion isobar production and by forward backward collimation of the nucleons. The production rates for the isobars ++1238 , +1238 , +1500 have been estimated, taking into account the experimental peripheral behaviour of the interaction. In the pnπ+ reaction they are (50±2)%; (10±3)%; (4±3)%. In the ppπ+ reaction the production of ++1238 is estimated to be (45±10)%. The dπ+ and dπ+π+π- reaction cross-sections are respectively (0.03±0.01) mb, and (0.04±0.01) mb.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Elastic n-p charge-exchange scattering at 8 GeV/c

Manning, G. ; Parham, A.G. ; Jafar, J.D. ; et al.
Nuovo Cim.A 41 (1966) 167-188, 1966.
Inspire Record 1185251 DOI 10.17182/hepdata.1062

The differential cross-section for elastic charge-exchange scattering of neutrons on protons has been measured at 8 GeV/c over forward laboratory scattering angles (0÷90) mrad (square of four-momentum transfer 0<−t<0.5 (GeV/c)2). The method utilized acoustic spark chambers and about 1900 elastic-scattering events were analysed. A value of (dσ/dΩ)lab=(20±6) mb/sr (dσ/dt=(0.93±0.28) mb/(GeV/c)2) was obtained for the forward differential cross-section and an estimated (0.06±0.03) mb for the elastic charge exchange cross-section. Both cross-sections show the decreased values expected from Pomeranchuk’s second theorem (1) when compared with results at lower energies (2). Further comparison shows that the narrow forward peak in the distribution of dσ/dt previously observed for −t<0.05, is still present at 8 GeV/c, varying in shape only slowly, if at all, with energy. For −t>0.1 however, energy dependence is apparent. The results also suggest that the interaction is spin-dependent and/or that the real parts of the scattering amplitudes in the isospin states 0 and 1 are different. Comparisons with the theoretical predictions show good agreement with the value of forward cross-section given by the Regge pole approach ofAhmadzadeh (3). The model ofRingland andPhillips (4) for single-pion exchange with absorption agrees with our results for −t<0.01 but a predicted secondary peak at −t∼0.08 is not observed.

3 data tables
Table 1

'2'. '3'.

Table 2

'2'. '3'.

Table 3

No description provided.


Deep inelastic scattering with leading protons or large rapidity gaps at HERA

The ZEUS collaboration Chekanov, S. ; Derrick, M. ; Magill, S. ; et al.
Nucl.Phys.B 816 (2009) 1-61, 2009.
Inspire Record 804915 DOI 10.17182/hepdata.52860

The dissociation of virtual photons, $\gamma^{\star} p \to X p$, in events with a large rapidity gap between $X$ and the outgoing proton, as well as in events in which the leading proton was directly measured, has been studied with the ZEUS detector at HERA. The data cover photon virtualities $Q^2>2$ GeV$^2$ and $\gamma^{\star} p$ centre-of-mass energies $40&lt;W&lt;240$ GeV, with $M_X>2$ GeV, where $M_X$ is the mass of the hadronic final state, $X$. Leading protons were detected in the ZEUS leading proton spectrometer. The cross section is presented as a function of $t$, the squared four-momentum transfer at the proton vertex and $\Phi$, the azimuthal angle between the positron scattering plane and the proton scattering plane. It is also shown as a function of $Q^2$ and $\xpom$, the fraction of the proton's momentum carried by the diffractive exchange, as well as $\beta$, the Bjorken variable defined with respect to the diffractive exchange.

48 data tables
Table 1

The differential cross section DSIG/DT for the LRG and the LPS data samples.

Table 2

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

Table 3

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

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