Bose-Einstein Correlations of Three Charged Pions in Hadronic Z^0 Decays
| dc.creator | The OPAL Collaboration | |
| dc.creator | al, K. Ackerstaff et | |
| dc.date | 1998-06-29 | |
| dc.date.accessioned | 2026-07-07T12:02:22Z | |
| dc.date.available | 2026-07-07T12:02:22Z | |
| dc.description | Bose-Einstein Correlations (BEC) of three identical charged pions were studied in 4 x 10^6 hadronic Z^0 decays recorded with the OPAL detector at LEP. The genuine three-pion correlations, corrected for the Coulomb effect, were separated from the known two-pion correlations by a new subtraction procedure. A significant genuine three-pion BEC enhancement near threshold was observed having an emitter source radius of r_3 = 0.580 +/- 0.004 (stat.) +/- 0.029 (syst.) fm and a strength of λ_3 = 0.504 +/- 0.010 (stat.) +/- 0.041 (syst.). The Coulomb correction was found to increase the λ_3 value by \~9% and to reduce r_3 by ~6%. The measured λ_3 corresponds to a value of 0.707 +/- 0.014 (stat.) +/- 0.078 (syst.) when one takes into account the three-pion sample purity. A relation between the two-pion and the three-pion source parameters is discussed. | |
| dc.description | 19 pages, LaTeX, 5 eps figures included, accepted by Eur. Phys. J. C | |
| dc.identifier | https://arxiv.org/abs/hep-ex/9806036 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/9806036 | |
| dc.identifier | Eur.Phys.J.C5:239-248,1998 | |
| dc.identifier | doi:10.1007/s100520050265 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207415 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Bose-Einstein Correlations of Three Charged Pions in Hadronic Z^0 Decays | |
| dc.type | text |