Absolute cross section for the production of 24Na in Cu by 400 GeV protons

Baker, S.; Kerns, C.; Pordes, S.; Cumming, J. B.; Soukas, A.; Agoritsas, V.; Stevenson, G.

doi:10.1016/0167-5087(84)90373-9

Cited by 8 publications

(2 citation statements)

References 10 publications

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“…The present experiment was an outgrowth of work at the Fermi National Accelerator Laboratory (FNAL) intended to supply precise absolute cross sections for beam monitoring and diagnostic purposes (18). With recoil catchers in some target stacks.…”

Section: Methodsmentioning

confidence: 99%

Momentum transfer in the fragmentation of copper by 400-GeV protons

Cumming¹

1983

Can. J. Chem.

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Mean momenta transferred to products of the fragmentation of copper by 400-GeV protons have been determined by the thick-target thick-catcher technique. Comparison with data for incident protons and heavy ions indicates that the limiting fragmentation region has been reached and supports a simple relationship between momentum and energy transfers in peripheral reactions which had been proposed previously.

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Section: Methodsmentioning

confidence: 99%

Momentum transfer in the fragmentation of copper by 400-GeV protons

Cumming¹

1983

Can. J. Chem.

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“…Typically 60% of the beam intercepted the target, giving x 50MHz interaction rate. The SEM and ion chamber were calibrated by monitoring the production rate of 24Na in copper foils, which were inserted into the beam line for special calibration runs, using the spallation cross sections of Baker et al [8]. The stability of these calibrations, which have been repeated many times over the pasf decade, indicates an absolute uncertainty of 10% in the number of protons delivered by our beam line.…”

Section: Introductionmentioning

confidence: 99%

Measurement ofJ/ψ and ψ’ production in 800 GeV/cproton-gold collisions

Schub¹,

Jansen²,

Mishra³

et al. 1995

Phys. Rev. D

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With a data sample containing 1.1 x lo5 J/$ -+ /L+/L-decays reconstructed with 16 M~V / C ' rms mass resolution, we have measured the differential cross sections versus Feynman-x, rapidity, and p~ for the production of J/$ and 4' in 800 GeVlc p A u collisions. Our results are compared with leading-order QCD predictions and with previous measurements. While the shapes of the cross sections are in qualitative agreement with QCD predictions, the magnitudes disagree by factors of 7 ( J / 4 ) and 25 (4'). Assuming an appropriate form for the differential cross sections in regions not measured, we derive a total J/+ production cross section a ( p + N + J/$ + X) = 442 f 2 i 88 nb/nucleon and a (model-dependent) total 4' cross section u(p + N + $' + X) = 75 f 5 f 22 nblnucleon. For J/$ produced at central rapidity, du(p + N + J/$ + X)/dyly=o = 230 i 5 f 46 nb/nucleon. PACS number(s): 13.85. Ni, 24.85.+p, 25.40.Ve

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