Anti-Baryon Inclusive Spectra in Hadron Fragmentation and the Recombination Mechanism

Iso, Chikashi; Tashiro, Tsutomu

doi:10.1143/ptp.73.717

Cited by 4 publications

(3 citation statements)

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“…The production of antiprotons increases more rapidly than the production of pions as the incident proton energy increases. As expected from isotropic considerations, the production of n+ mesons is more abundant than the production of nmesons, but the production of antineutrons (ii) and antiprotons (13) is almost the same. Neutron production from p-p collisions also is quite large, and at an energy of 200 GeV, neutron yield is 62%; however, neutron yield does not increase as much as the increase in incident energy.…”

Section: P-p and P-pb Collisionsupporting

confidence: 58%

“…The longitudinal momentum (Feynman X,) spectra calculated by the VENUS code depend on the incident proton energy, which differs from the quark-diquark cascade models calculated by Is0 et a1 [13] and Kinoshita et a1 [14]. Their spectra are independent of the incident proton energy.…”

Section: Introductionmentioning

confidence: 74%

“…Is0 et a1 [13] and Kinoshita et a1 [14] calculated the antiproton Xf spectra using a similar quark-diquark cascade and recombination model to that used by the VENUS code. However, their Xf spectra are independent of incident proton energy because the finite mass of the produced hadron is not taken into account, even in splitting the low-mass string.…”

Section: P-p and P-pb Collisionmentioning

confidence: 99%

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Antiproton production in p-p, p-Pb, O-Pb and Si-Si collisions at 200A and 1000A GeV calculated by the multistring model VENUS

Takahashi¹,

Werner²,

Powell³

1990

J. Phys. G: Nucl. Part. Phys.

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The multistring model VENUS has been applied in the calculation of antiproton and antineutron yields and longitudinal momentum (Feynman Xf) spectra for p-p, p-Pb, O-Pb, and Si-Si collisions at 200A and 1000A GeV incident nuclear energies. The antiproton spectra of p-Cu collisions at an incident proton energy of 120 GeV are also analysed. The calculated antiproton spectra in the small Xf region are smaller than those calculated by Hojovat and Van-Ginneken's empirical formula used in the design of the Fermilab Tevatron antiproton source. In contrast to previous theoretical calculations, the antiproton spectra calculated by VENUS do not show asymptotic behaviour for an incident nucleon energy of 200-1000 GeV caused by the large mass of antiprotons. The yield and spectra of the antineutrons is very close to that of the antiprotons in all of the cases studied. The pion yield in a 200 GeV per nucleon energy O-Pb collision calculated by the VENUS code can explain the difference between the experimental and the calculated values for non-central collisions.

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Section: P-p and P-pb Collisionsupporting

confidence: 58%

Section: Introductionmentioning

confidence: 74%