BOSE-EINSTEIN CORRELATIONS IN P(P)OVER-BAR ANNIHILATIONS AT REST

Authors
ADLER R ALHALEL T ANGELOPOULOS A APOSTOLAKIS A ASLANIDES E BACKENSTOSS G BEE CP BEHNKE O BENNET J BERTIN V BIENLEIN JK BLOCH P BULA C CARLSON P CARVALHO J CAWLEY E CHARALAMBOUS S CHARDALAS M CHARDIN G CHERTOK MB DANIELSSON M CODY A DEDOUSSIS S DEJARDIN M DERRE J DODGSON M DOUSSE JC DUCLOS J EALET A ECKART B ELEFTHERIADIS C EVANGELOU I FARAVEL L FASSNACHT P FAURE JL FELDER C FERREIRAMARQUES R FETSCHER W FIDECARO M FILIPCIC A FRANCIS D FRY J FUGLESANG C GABATHULER E GAMET R GARRETA D GERALIS T GERBER HJ GO A GUMPLINGER P GUYOT C HARRISON PF HASELDEN A HAYMAN PJ HENRYCOUANNIER F HEYES WG HOLLANDER RW JANSSON K JOHNER HU JONAND K KEREK A KEREN J KETTLE PR KOCHOWSKI C KOKKAS P KREUGER R LAWRY T LEGAC R LIOLIOS A MACHADO E MALEY P MANDIC I MANTHOS N MAREL G MIKUZ M MILLER J MONTANET F NAKADA T ONOFRE A PAGELS B PAVLOPOULOS P PELUCCHI F DACUNHA JP POLICARPO A POLIVKA G POSTMA H RICKENBACH R ROBERTS BL ROZAKI E RUF T SACKS L SAKELIOU L SANDERS P SANTONI C SARIGIANNIS K SCHAFER M SCHALLER LA SCHOPPER A SCHUNE P SOARES A TAUSCHER L THIBAULT C TOUCHARD F TOURAMANIS C TRIANTIS F TROSTER DA VANBEVEREN E VANEIJK CWE VARNER G VLACHOS S WEBER P WIGGER O WITZIG C WOLTER M YECHE C ZAVRTANIK D ZIMMERMAN D
Citation
R. Adler et al., BOSE-EINSTEIN CORRELATIONS IN P(P)OVER-BAR ANNIHILATIONS AT REST, Zeitschrift fur Physik. C, Particles and fields, 63(4), 1994, pp. 541-547
Citations number
38
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
63
Issue
4
Year of publication
1994
Pages
541 - 547
Database
ISI
SICI code
0170-9739(1994)63:4<541:BCIPAA>2.0.ZU;2-R
Abstract
Two-charged-pion correlations were studied in ppBAR (--> 2pi+2pi-npi0, n greater-than-or-equal-to 0) annihilations at rest with the CPLEAR d etector at the Low-Energy Antiproton Ring (LEAR) A strong enhancement was found in the production of pairs of like-sign pions with a small v alue of the relative four-momentum Q, with respect to pairs of unlike- sign pions. The observed enhancement was interpreted as a consequence of the Bose-Einstein symmetrization of the two-pion wave function. The data are well represented by a correlation function parametrized as a double-Gaussian; an exponential parametrization is also statistically acceptable. The value of the correlation strength is found to be > 1. The high-quality large data samples together with the ability for K+/ - identification and final-state separation allowed the study of syste matic effects impacting on the Q dependence of the correlation functio n and on the extracted space parameters of the pion sources.