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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

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Table 3

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