Direct lepton production and the Drell-Yan mechanism
- 1 March 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 13 (5), 1405-1408
- https://doi.org/10.1103/physrevd.13.1405
Abstract
We suggest that the Drell-Yan mechanism, when applied to low-mass dilepton production, underestimates the yield by a factor ∼ 25 because it neglects the contribution coming from annihilation of produced parton-antiparton pairs. If this is correct, the observed direct lepton production may be accounted for by electromagnetic production of low-mass dileptons possessing high total transverse momentum.Keywords
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