HBT measurement of the expansion velocity of pion production volume

被引：13

作者：

Anikina, MK

Aksinenko, VD

Avramenko, SA

Bannik, BP

Belikov, YA

Gajewski, K

Galperin, AG

Glagolev, NS

Golokhvastov, AI

Khorozov, SA

Kondratiev, VP

Kozubsky, EV

Krasnov, LV

Kulakov, BA

Lukstins, J

Mandrik, OY

Manyakov, PK

Matyushin, AT

Matyushin, VT

Mirkowski, J

Nurgozhin, NN

Okhrimenko, LS

Okhrimenko, OV

Pavlowski, Z

Piatkowski, A

Radomanov, VB

Saitov, IS

Sedykh, SA

Shevchenko, IE

Stephanov, IV

Taran, GG

Zavyalov, VF

机构：

[1] WARSAW UNIV,RADIOTECH INST,WARSAW,POLAND

[2] ST PETERSBURG STATE UNIV,ST PETERSBURG,RUSSIA

[3] KAZAKH ACAD SCI,INST HIGH ENERGY PHYS,ALMA ATA,KAZAKHSTAN

[4] RUSSIAN ACAD SCI,LEBEDEV INST PHYS,MOSCOW,RUSSIA

来源：

PHYSICS LETTERS B | 1997年 / 397卷 / 1-2期

关键词：

interference correlations of pi(-) mesons; expansion velocity of pion production volume; nucleus-nucleus interactions; streamer chamber;

D O I：

10.1016/S0370-2693(97)00078-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a new method of data processing in the investigation of interference correlations of identical particles, a direct proof of nonstationarity of the pi(-) production volume in central Mg-Mg collisions at a beam momentum of p(lab) = 4.4 GeV/c per nucleon was obtained. The velocity of a source of correlated pi(-) meson pairs is introduced as a free parameter in the Lorentz transformed approximation formula of the interference peak. This velocity increases with increasing the velocity of a subset of pi(-) mesons which are chosen for the interference analysis. The source velocity is the new experimentally measurable physical variable of interference analysis, apart from space-time sizes of the source. (C) 1997 Published by Elsevier Science B.V.

引用

页码：30 / 36

页数：7

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