DIELECTRON YIELDS IN P+D AND P+P COLLISIONS AT 4.9 GEV

被引：15

作者：

HUANG, HZ

BEEDOE, S

BOUGTEB, M

CAILIU, J

CARROLL, J

HALLMAN, T

HEILBRONN, L

IGO, G

KIRK, P

KREBS, G

LETESSIERSELVON, A

LUTTRELL, B

MANSO, F

MADANSKY, L

MATIS, HS

MILLER, D

MILLER, J

NAUDET, C

PORTER, RJ

ROCHE, G

SCHROEDER, LS

SEIDL, PA

WANG, ZF

WELSH, R

WILSON, WK

YEGNESWARAN, A

机构：

[1] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024

[2] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218

[3] UNIV CLERMONT FERRAND,IN2P3,F-63177 CLERMONT FERRAND,FRANCE

[4] CEBAF,NEWPORT NEWS,VA 23606

[5] LOUISIANA STATE UNIV,BATON ROUGE,LA 70803

[6] NORTHWESTERN UNIV,EVANSTON,IL 60201

来源：

PHYSICS LETTERS B | 1992年 / 297卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(92)91254-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The dielectron yield in p+d and p+p collisions at a beam kinetic energy of 4.9 GeV has been measured using the Dilepton Spectrometer (DLS) at the Bevalac. The measured ratio of the yield in p+d to that in p+p collisions, 1.92 +/- 0.06, is in disagreement with the assumptions of model calculations applied to our earlier p+Be data, where it was found that p+n bremsstrahlung dominated other sources. While the measured ratio is consistent with a hadron-like origin of the dielectrons, the contributions of known hadronic decays are smaller than the measured yield from p+p collisions.

引用

页码：233 / 237

页数：5

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