Lancaster EPrints

Measurement of the W mass in e+e− collisions at production threshold

Barate, R. and Finch, Alexander (1997) Measurement of the W mass in e+e− collisions at production threshold. Physics Letters B, 401 (3-4). pp. 347-362. ISSN 0370-2693

Full text not available from this repository.

Abstract

In June 1996, the LEP centre-of-mass energy was raised to 161 GeV. Pair production of W bosons in e+e− collisions was observed for the first time by the LEP experiments. An integrated luminosity of 11 pb−1 was recorded in the ALEPH detector, in which WW candidate events were observed. In 6 events both Ws decay leptonically. In 16 events, one W decays leptonically, the other into hadrons. In the channel where both Ws decay into hadrons, a signal was separated from the large background by means of several multi-variate analyses. The W pair cross-section is measured to be σWW = 4.23 ± 0.73 (stat.) ± 0.19 (syst.) pb. From this cross-section, the W mass is derived within the framework of the Standard Model: mW = 80.14 ± 0.34 (stat.) ± 0.09 (syst.) ± 0.03 (LEP energy) GeV/c2

Item Type: Article
Journal or Publication Title: Physics Letters B
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 64017
Deposited By: ep_importer_pure
Deposited On: 14 May 2013 15:41
Refereed?: Yes
Published?: Published
Last Modified: 20 Nov 2017 11:05
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/64017

Actions (login required)

View Item