Feynman-[ital x] and transverse momentum dependence of [ital D][sup [plus minus]] and [ital D][sup 0],[ital [bar D]][sup 0] production in 250 GeV [pi][sup [minus]]-nucleon interactions

Conference · Sat Feb 01 04:00:00 EST 1992 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:5633018

Karchin, P E ^[1]

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1. Physics Department, Yale University, J. W. Gibbs Laboratory, P.O. Box 6666, New Haven, Connecticut 06511 (United States)

We measure the differential cross section with respect to Feynman-[ital x] ([ital x][sub [ital F]]) and transverse momentum ([ital P][sub [ital T]]) for charm meson production using targets of Be, Al, Cu and W. In the range 0.1[le][ital x][sub [ital F]][le]0.7, [ital d][sigma]/[ital dx][sub [ital F]] is well fit by the form (1[minus][ital x][sub [ital F]])[sup [ital n]] with [ital n]=3.9[plus minus]0.2. The difference between [ital n] values for [ital D][sup [minus]] and [ital D][sup +] is 1.1[plus minus]0.4. However, we find an asymmetry of 0.18[plus minus]0.04 favoring the production of [ital D][sup [minus]] compared to [ital D][sup +]. In the lower [ital P][sub [ital T]] range, [le]2 GeV, [ital d][sigma]/[ital dP][sup 2][sub [ital T]] is well fit by the form exp([minus][ital b][times][ital P][sup 2][sub [ital T]]) with [ital b]=1.03[plus minus]0.04 GeV[sup [minus]2], while in the higher [ital P][sub [ital T]] range, 0.8 to 3.6 GeV, it is well fit by the form exp([minus][ital b][prime][times][ital P][sub [ital T]]) with [ital b][prime]=2.76[plus minus]0.06 GeV[sup [minus]1]. The shape of the differential cross section has no significant dependence on atomic mass of the target material.

• DOE Contract Number: AC02-76ER03075
• OSTI ID: 5633018
• Report Number(s): CONF-920837--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 272:1
• Country of Publication: United States
• Language: English

Related Subjects

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662340* -- Hadron Interactions-- (1992-)
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALUMINIUM 27 TARGET
ANTI-D NEUTRAL MESONS
ANTIMATTER
ANTIPARTICLES
BERYLLIUM 9 TARGET
BOSONS
CHARGED-PARTICLE REACTIONS
CHARM PARTICLES
CHARMED MESONS
COPPER 64 TARGET
CROSS SECTIONS
D MESONS
D MINUS MESONS
D NEUTRAL MESONS
D PLUS MESONS
DECAY
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
HADRONS
LINEAR MOMENTUM
MASS SPECTRA
MATTER
MESON REACTIONS
MESONS
NUCLEAR REACTIONS
PARTICLE DECAY
PARTICLE PRODUCTION
PION MINUS REACTIONS
PION REACTIONS
PSEUDOSCALAR MESONS
SPECTRA
TARGETS
TRANSVERSE MOMENTUM
TUNGSTEN 184 TARGET