Bose-Einstein Correlations in e+e−→W+W− at 172 and 183 GeV

Kartvelishvili, Vakhtang (1999) Bose-Einstein Correlations in e+e−→W+W− at 172 and 183 GeV. European Physical Journal C: Particles and Fields, 8 (4). pp. 559-571. ISSN 1434-6044

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Abstract

Bose-Einstein correlations between like-charge pions are studied in hadronic final states produced by e+e- annihilations at center-of-mass energies of 172 and 183 GeV. Three event samples are studied, each dominated by one of the processes W+W−→qq¯¯¯ℓν¯¯¯ℓW+W−→qq¯ℓν¯ℓ , W+W−→qq¯¯¯qq¯¯¯W+W−→qq¯qq¯ , or (Z0/γ)∗→qq¯¯¯(Z0/γ)∗→qq¯ . After demonstrating the existence of Bose-Einstein correlations in W decays, an attempt is made to determine Bose-Einstein correlations for pions originating from the same W boson and from different W bosons, as well as for pions from (Z0/γ)∗→qq¯¯¯(Z0/γ)∗→qq¯ events. The following results are obtained for the individual chaoticity parameters λλ , assuming a common source radius R: In each case, the first error is statistical and the second is systematic. At the current level of statistical precision it is not established whether Bose-Einstein correlations, between pions from different W bosons exist or not.

Item Type:
Journal Article
Journal or Publication Title:
European Physical Journal C: Particles and Fields
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
ID Code:
82601
Deposited By:
Deposited On:
03 Nov 2016 09:38
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2020 06:23