FEYNMAN-X AND TRANSVERSE-MOMENTUM DEPENDENCE OF D+/- AND D(0),(D)OVER-BAR(0) PRODUCTION IN 250 GEV PI-NUCLEON INTERACTIONS

被引：37

作者：

ALVES, GA

AMATO, S

ANJOS, JC

APPEL, JA

BRACKER, SB

CREMALDI, LM

DARLING, CL

DIXON, RL

ERREDE, D

FENKER, HC

GAY, C

GREEN, DR

JEDICKE, R

KAPLAN, D

KARCHIN, PE

KWAN, S

LEEDOM, I

LUEKING, LH

LUSTE, GJ

MANTSCH, PM

NETO, JRTD

METHENY, J

MILBURN, RH

DEMIRANDA, JM

DAMOTTA, H

NAPIER, A

DOLIVERA, AB

RAFATIAN, A

DOSREIS, AC

REUCROFT, S

ROSS, WR

SANTORO, AFS

SHEAFF, M

SOUZA, MHG

SPALDING, WJ

STOUGHTON, C

STREETMAN, ME

SUMMERS, DJ

TAKACH, SF

WU, Z

机构：

[1] FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510

[2] UNIV MISSISSIPPI,OXFORD,MS 38677

[3] NORTHEASTERN UNIV,BOSTON,MA 02115

[4] UNIV TORONTO,TORONTO M5S 1A7,ONTARIO,CANADA

[5] TUFTS UNIV,MEDFORD,MA 02155

[6] UNIV WISCONSIN,MADISON,WI 53706

[7] YALE UNIV,NEW HAVEN,CT 06511

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.69.3147

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measure the differential cross section with respect to Feynman-x (x(F)) and transverse momentum (P(T)) for charm meson production using targets of Be, Al, Cu, and W. In the range 0.1 < x(F) < 0.7, dsigma/dx(F) is well fit by the form (1 - x(F))n with n = 3.9 +/- 0.3. The difference between n values for D- and D+ is 1.1 +/- 0.7. In the lower P(T) range, < 2 GeV, dsigma/dP(T)2 is well fit by the form exp(-b x P(T)2) with b = 1.03 +/- 0.06 GeV-2, while in the higher PT range, 0.8 to 3.6 GeV, it is well fit by the form exp(-b' x P(T)) with b' = 2.76 +/- 0.08 GeV-1. The shape of the differential cross section has no significant dependence on atomic mass of the target material.

引用

页码：3147 / 3150

页数：4

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