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Dimuon production below mass 3.1-GeV/c**2 in p W and S W interactions at 200-A/GeV/c

The HELIOS collaboration Masera, M. ;
Nucl.Phys.A 590 (1995) 93C-102C, 1995.
Inspire Record 407648 DOI 10.17182/hepdata.36493

The focus of this experiment is on dimuons at low M T but the mass range up to the J ψ is also covered. Dimuons are measured over a wide rapidity interval, ranging from nearly central to very forward rapidities. Experimental results concerning the vector meson production in p-W and S-W interactions at 200 GeV/c/A as a function of the charged multiplicity are presented together with a comparison of the observed invariant mass spectra with the dimuon conventional sources in the mass region between the φ and J ψ mesons. The observed large difference in the shape and absolute value of p-W and S-W dimuon spectra cannot be explained in terms of a direct extrapolation of the p-p results.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Measurements of the Phi (rho + omega) ratio in a large kinematic region in p W and S W interactions

The HELIOS/3 collaboration Mazzoni, M.A. ;
Nucl.Phys.A 544 (1992) 623C-626C, 1992.
Inspire Record 343257 DOI 10.17182/hepdata.36665

We present our first results on φ and ϱ+ω production in pW and SW collisions at 200 GeV/nucleon, obtained using the HELIOS/3 muon spectrometer, which measures dimuons in a large acceptance in transverse momentum and rapidity. The data show a clear increase of the ratio φ/(ϱ+ω) going from pW to SW collisions and a slight increase from peripheral to central SW collisions. This the case for low (p t ≤ 0.6GeV/c) and high (p t > 0.6 GeV/c) transverse momentum. The rise is due to an increase in the number of produced φ mesons.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Dimuon and vector meson production in p W and S W interactions at 200-GeV/c/nucleon

The HELIOS/3 collaboration Mazzoni, M.A. ;
Nucl.Phys.A 566 (1994) 95C-102C, 1994.
Inspire Record 378632 DOI 10.17182/hepdata.36535

The focus of this experiment is on dimuons at low M T but the mass range up to the J ψ is also covered. Dimuons are measured over a wide rapidity interval, ranging from nearly central to very forward rapidities. We present the experimental results in different kinematic regions and as a function of charged multiplicity. The observed dimuon spectra are also compared to conventional sources of lepton pairs production.

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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$\rho^0$ and $\omega$ Meson Inclusive Production by 70-{GeV}/$c$ Protons on the Be Nuclei.

Antipov, Yu.M. ; Bessubov, V.A. ; Budanov, N.P. ; et al.
Sov.J.Nucl.Phys. 36 (1982) 829, 1982.
Inspire Record 177514 DOI 10.17182/hepdata.41184

None

10 data tables
Table 1

THE RATIO SIG(RHO0)/SIG(OMEGA) IS FREE PARAMETER.

Table 2

THE RATIO SIG(RHO0)/SIG(OMEGA)=1. AND FIXED.

Table 3

No description provided.

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Inclusive mu - Pair Production at 150-GeV by pi+ Mesons and Protons

Anderson, K.J. ; Henry, G.G. ; McDonald, K.T. ; et al.
Phys.Rev.Lett. 37 (1976) 799, 1976.
Inspire Record 3993 DOI 10.17182/hepdata.21035

We report the measurements of the inclusive μ-pair production by 150-GeV protons and π+ mesons on beryllium. Absolute cross sections as well as the Feynman-x and PT dependence are presented in the mass region between 0.211 and 3.5 GeV/c2. Upper limits are also given for the inclusive production of η and ρ′(1600) mesons.

7 data tables
Table 1

DATA OBTAINED FROM FIGURE BY A.A. LEBEDEV.

Table 2

DATA OBTAINED FROM FIGURE BY A.A. LEBEDEV.

Table 3

No description provided.

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