Date

Particle ratios of high x(t) hadrons in p A interactions at s**(1/2) = 38.8-GeV.

Straub, P.B. ; Jaffe, D.E. ; Glass, H.D. ; et al.
Phys.Rev.D 45 (1992) 3030-3037, 1992.
Inspire Record 342598 DOI 10.17182/hepdata.22727

We report measurements of the ratios K+π+, pπ+, K−π−, p¯π−, π−π+, K−K+, and p¯p for hadrons with 0.19<xt<0.62 produced in p−Be and p−W collisions at s=38.8 GeV. The K+π+ ratio at high xt gives the fragmentation-function ratio DuK+Duπ+ at high z. The high-xt K−π− ratio gives an upper limit for DdK−Ddπ− at high z. The pt dependence of pπ+ suggests that scattered constituent diquarks are the primary source of protons with pt<6 GeV/c. We also present species correlations in high-mass h+h− pairs. Strong K+K− and pp¯ correlations were observed.

50 data tables

No description provided.

No description provided.

No description provided.

More…

Meson production in p + U, O + U and S + U interactions at 200-GeV/nucleon.

The NA38 collaboration Abreu, M.C. ; Baglin, C. ; Baldisseri, A. ; et al.
Z.Phys.C 55 (1992) 365-371, 1992.
Inspire Record 344266 DOI 10.17182/hepdata.14583

Meson production in proton, oxygen and sulphur interactions with uranium targets at 200 GeV/nucleon is studied. We measure the inclusive meson cross-section d σ/dPT2 and its evolution fromp+U to S+U. The cross-section fitted with an exponential gives an inverse slopePT0 of the order of 210 MeV/c. As a function of the neutral transverse energy,PT0 values show a slight rise followed by a plateau. The normalized difference (σ+−σ−)/σ− between positive and negative meson cross-sections is found to increase withET.

6 data tables

No description provided.

No description provided.

No description provided.

More…

Comparison of p + A and Si + Au collisions at 14.6-GeV/c

The E802 collaboration Abbott, T. ; Akiba, Y. ; Beavis, D. ; et al.
Phys.Rev.Lett. 66 (1991) 1567-1570, 1991.
Inspire Record 331219 DOI 10.17182/hepdata.19913

The production of π±,K±,p has been measured in p+Be and p+Au collisions for comparison with central Si+Au collisions. The inverse slope parameters T0 obtained by an exponential fit to the invariant cross sections in transverse mass are found to be, T0p,K+,ππ∼140–160 MeV in p+A collisions, whereas in central Si+Au collisions, T0p,K+∼200–220 MeV >T0ππ∼140–160 MeV at midrapidity. The π± and K+ distributions are shifted backwards in p+Au compared with p+Be. A gradual increase of (dn/dy)K+ per projectile nucleon is observed from p+Be to p+Au to central Si+Au collisions, while pions show no significant increase.

5 data tables

No description provided.

No description provided.

No description provided.

More…

Precise Measurements of Particle Production by 400-{GeV}/$c$ Protons on Beryllium Targets

Atherton, H.W. ; Bovet, C. ; Doble, N. ; et al.
CERN-80-07, 1980.
Inspire Record 155159 DOI 10.17182/hepdata.50066

None

9 data tables

No description provided.

No description provided.

No description provided.

More…

Production of Massive Muon Pairs by 300-GeV and 400-GeV Protons

Kluberg, L. ; Piroue, P.A. ; Sumner, Richard L. ; et al.
Phys.Rev.Lett. 37 (1976) 1451, 1976.
Inspire Record 4051 DOI 10.17182/hepdata.1201

We have observed muon pairs with effective masses in the range 7<~Mμμ<~11 GeV/c2 produced by 300- and 400-GeV protons incident on a Cu target at Fermilab. The production cross section per nucleon, dσdMμμ, for 400-GeV incident protons is found to fall from 1 × 10−36 cm2/(GeV/c2) at Mμμ=7.7 GeV/c2 to 2.7 × 10−38 cm2/(GeV/c2) at Mμμ=11.2 GeV/c2. We find that a significant fraction of the observed direct single muons come from high-mass dimuons.

12 data tables

No description provided.

No description provided.

No description provided.

More…