Bose-einstein Correlations in W+w Events at Lep2
نویسنده
چکیده
Analyses of Bose-Einstein Correlations in WW events at LEP2 by the four LEP collaborations are presented. In particular, Bose-Einstein correlations in WW overlap are investigated and the possible existence of these correlations between particles coming from different W’s, which may influence the W-mass measurements in the fully hadronic channel ee → WW → q1q̄2q3q̄4. No evidence for such an inter-W Bose-Einstein correlation is found. The results are preliminary.
منابع مشابه
BOSE-EINSTEIN CORRELATIONS IN PION PRODUCTION AT TRISTAN
Measurement of Bose-Einstein correlations in the production of like-signed pion pairs has been made with the AMY detector at TRISTAN. An event sample of 10120 hadronic events with ranging between 50 to 61 GeV was used. These measurements indicate a strength of the enhancement of ? = 0.61M.07, with a typical correlation size of Ro = 1.16±.08 fm. This value of ? is consistent with measurem...
متن کاملBose-Einstein and Colour Interference in W-pair Decays
We study effects on the W mass measurements at LEP2 from non-perturbative interference effects in the fully hadronic decay channel. Based on a model for Bose-Einstein interference, which is in agreement with LEP1 data, we argue that there are no Bose-Einstein correlations between bosons coming from the different W’s. For small reconnection probabilities we rule out the possible experimental sig...
متن کاملColor Reconnection and Bose-einstein Correlations at Lep2
Recent investigations of final state interactions of W+W− events in e+e− collisions up to center of mass energies √ s = 189 GeV at LEP2 are reviewed. The data were used to look for color reconnection and Bose-Einstein correlations between the two color singlets of fully hadronic W events. 1 Motivation In high energy e+e− collisions at LEP the W bosons are produced in pairs. As the hadronisation...
متن کاملAnalytic Calculation of Bose-einstein Correlations at Lep1 and Lep2 *
Theoretical results in the τ-model are discussed in the context of Bose-Einstein correlations in e + e − annihilations at LEP1 and LEP2 as well as that of relativistic heavy ion collisions at SPS and RHIC.
متن کاملBose - Einstein Correlations in e + e − → W + W − at a Linear Collider
We show that the most popular method to simulate Bose-Einstein (BE) interference effects predicts negligible correlations between identical pions originating from the hadronic decay of different W ’s produced in ee → WW → 4 jets at typical linear collider energies. It is known that the Bose-Einstein (BE) effect can produce a systematic uncertainty on the W mass measurement in the process ee → W...
متن کامل