Production of Ξ* resonances in Σ- induced reactions at 345 GeV/c

被引：22

作者：

Adamovich, MI

Alexandrov, YA

Baranov, SP

Barberis, D

Beck, M

Bérat, C

Beusch, W

Boss, M

Brons, S

Brückner, W

Buénerd, M

Busch, C

Büscher, C

Charignon, F

Chauvin, J

Chudakov, EA

Dersch, U

Dropmann, F

Engelfried, J

Faller, F

Fournier, A

Gerassimov, SG

Godbersen, M

Grafström, P

Haller, T

Heidrich, M

Hubbard, E

Hurst, RB

Königsmann, K

Konorov, I

Keller, N

Martens, K

Martin, P

Masciocchi, S

Michaels, R

Müller, U

Neeb, H

Newbold, D

Newsom, C

Paul, S

Pochodzalla, J

Potashnikova, I

Povh, B

Ransome, RD

Ren, Z

Rey-Campagnolle, M

Rosner, G

Rossi, L

Rudolph, H

Scheel, C

机构：

[1] PN Lebedev Phys Inst, Moscow 117924, Russia

[2] Univ Bristol, Bristol, Avon, England

[3] CERN, CH-1211 Geneva 23, Switzerland

[4] Univ Genoa, Ist Nazl Fis Nucl, Dipt Fis, I-16146 Genoa, Italy

[5] Grenoble ISN, F-38026 Grenoble, France

[6] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[7] Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany

[8] Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

来源：

EUROPEAN PHYSICAL JOURNAL C | 1999年 / 11卷 / 02期

关键词：

D O I：

10.1007/s100520050631

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We report on a measurement of the differential and total cross sections of inclusive production of Xi* resonances in Sigma(-) - nucleus collisions at 345 GeV/c. The cross section for inclusive Xi(530)(0) production is about a factor of 5 below that of Xi(1320)(-) hyperons. The products of cross section and branching ratio for the observed channels Xi(1690)(0) --> Xi(-)pi(+)Xi 1820(-) --> Xi(1530)(0)pi(-) and Xi(1950)(-) --> Xi(1530)(0) pi(-) are lower by yet another order of magnitude. The Xi(1820)(-) and Xi(1950)(-) resonances show significantly harder x(F) and pi distributions than Xi(-) and Xi(1530)(0) hyperons. A comparison of the x(F)-distribution to PYTHIA and QGSM predictions provides only a partial agreement.

引用

页码：271 / 278

页数：8

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