Keller, R.
Max results
Sort by Reverse order

Showing 10 of 6744 results

Date

Measurement of the Target Asymmetry for the Reaction gamma p --> pi+ n at Photon Energies Between 0.7-GeV and 2.2-GeV and a Pion CM Angle of 65-Degrees

Althoff, K.H. ; Conrad, R. ; Herr, H. ; et al.
Phys.Lett.B 59 (1975) 93-94, 1975.
Inspire Record 104242 DOI 10.17182/hepdata.5536

At the Bonn 2.5.GeV electron synchrotron the target asymmetry for the photoproduction of positive pions has been measured. Data were taken at photon energies between 0.7 and 2.2 GeV and a pion CM-angle of 65°.

2 data tables
Table 1

Axis error includes +- 0.0/0.0 contribution (?////).

Table 2

No description provided.


Electron Scattering at 4-Degrees with Energies of 4.5-GeV - 20-GeV

Stein, S. ; Atwood, W.B. ; Bloom, Elliott D. ; et al.
Phys.Rev.D 12 (1975) 1884, 1975.
Inspire Record 100597 DOI 10.17182/hepdata.4669

This paper presents the results of the analysis of a single-arm inelastic-electron-scattering experiment at an angle of 4°. We present data on the turnon of scaling in the low-q2 region 0.1

21 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Inclusive Hadron Production in Inelastic Muon-Proton Scattering at 150-GeV/c.

Loomis, W.A. ; Matis, H.S. ; Anderson, H.L. ; et al.
Phys.Rev.Lett. 35 (1975) 1483-1486, 1975.
Inspire Record 102517 DOI 10.17182/hepdata.3284

Inclusive hadron production in muon-proton inelastic scattering has been measured for q2>0.5 (GeV/c)2 and 10<ν<135 GeV. The results are presented in the form of the transverse momentum distribution of charged hadrons and the hadron invariant structure function F(x′). Results are given for different regions of q2 and s.

16 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

An Improved Upper Limit for Photoproduction of psi (3105) Near Threshold

Andrews, D.E. ; Harvey, John R. ; Lobkowicz, F. ; et al.
Phys.Rev.Lett. 34 (1975) 1134-1136, 1975.
Inspire Record 98255 DOI 10.17182/hepdata.21225

An improved upper limit for ψ photoproduction near threshold is presented.

1 data table
Table 1

The branching ratio for J/PSI --> E+ E- is taken as 0.06.


New Measurements of Polarization and Differential Cross-Sections in K+ p Elastic Scattering in the 1.7-GeV/c-3-GeV/c Range

Patton, R. ; Barletta, W.A. ; Ehrlich, R.D. ; et al.
Phys.Rev.Lett. 34 (1975) 975-978, 1975.
Inspire Record 102699 DOI 10.17182/hepdata.21222

We have measured the polarization parameter and differential cross sections in K+p elastic scattering from a polarized target from small |t| and small |u| at five momentum points: 1.7, 2.1, 2.4, 2.7, and 3.0 GeV/c. The polarized-proton target was butanol cooled at 0.5° by a He3-He4 refrigerator; a combination of multiwire proportional chambers and scintillation counters detected the scattered particles. The results for small |u| are discussed in the context of pure Regge-pole models with exchange-degenerate Λ trajectories.

1 data table
Table 1

No description provided.


Search for Narrow Resonances in e+ e- Annihilation in the Mass Region 3.2-GeV to 5.9-GeV

Boyarski, A. ; Breidenbach, Martin ; Bulos, F. ; et al.
Phys.Rev.Lett. 34 (1975) 762, 1975.
Inspire Record 100594 DOI 10.17182/hepdata.21228

We have searched the mass region 3.2 to 5.9 GeV for evidence of narrow resonances in e+e−→hadrons. We find no evidence for any such resonances other than the ψ(3695) in this region with a sensitivity ranging from about 12 to 45% of the integrated cross section of the ψ(3695). The more stringent bounds apply to resonances of a few MeV width, while the looser bounds apply to resonances of up to 20 MeV width.

1 data table
Table 1

EXTREAMLY GOOD DATA, MUST BE ASCED FROM AUTHORS.


rivet Analysis
Total Cross-Section for Hadron Production by electron-Positron Annihilation Between 2.4-GeV and 5.0-GeV Center-Of-Mass Energy

Augustin, J.E. ; Boyarski, A. ; Breidenbach, Martin ; et al.
Phys.Rev.Lett. 34 (1975) 764, 1975.
Inspire Record 100592 DOI 10.17182/hepdata.21227

The total cross section for hadron production by e+e− annihilation has been measured at center-of-mass energies between 2.4 and 5.0 GeV. Aside from the very narrow resonances ψ(3105) and ψ(3695), the cross section varies between 32 and 17 nb over this region with structure in the vicinity of 4.1 GeV.

2 data tables
Table 1

No description provided.

Table 2

MEAN CHARGED MULTIPLICITY. ERRORS ARE STATISTICAL ONLY.


Polarized Photon Asymmetries in K+ Photoproduction at 16-GeV

Quinn, D.J. ; Rutherfoord, J.P. ; Shupe, M.A. ; et al.
Phys.Rev.Lett. 34 (1975) 543, 1975.
Inspire Record 100595 DOI 10.17182/hepdata.21241

Using a 16-GeV linearly polarized photon beam, we have measured asymmetries in the process γN→K+(Λ+Σ) from hydrogen and deuterium, for square of four-momentum transfer, t, between -0.01 and -0.8 (GeV/c)2. The data show that for −t≳0.1 (GeV/c)2, the cross sections for γp→K+Λ, γp→K+Σ0, and γn→K+Σ− are strongly dominated by natural-parity exchange, as is the case in single-pion photoproduction.

1 data table
Table 1

No description provided.


Cross-Sections for Diffractive p p --> p x from 100-GeV to 400-GeV

Schamberger, R.Dean ; Lee-Franzini, Juliet ; Mccarthy, R. ; et al.
Phys.Rev.Lett. 34 (1975) 1121-1124, 1975.
Inspire Record 102549 DOI 10.17182/hepdata.21249

We have measured the cross section for p+p→p+X for MX2 up to a constant fraction of s. We observe no rise for 130

1 data table
Table 1

No description provided.


Dimuon Production by Neutrons

Knapp, B. ; Lee, Won-Yong ; Leung, P. ; et al.
Phys.Rev.Lett. 34 (1975) 1044, 1975.
Inspire Record 2108 DOI 10.17182/hepdata.21935

A very narrow resonance with a mass of 3.1 GeV/c2 is observed in the reaction n+Be→μ++μ−+X. The total cross section for this process, as well as its P⊥2 and x distribution, are given.

1 data table
Table 1

The cross section per nucleon times the branching ratio.