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RESEARCH PRODUCT
Bremsstrahlung and the underlying event structure
A. GrauG. PancheriYogendra N. SrivastavaYogendra N. Srivastavasubject
PhysicsNuclear and High Energy PhysicsTransverse planeParticle physicsFormalism (philosophy of mathematics)Minimum biasTransverse momentumBremsstrahlungPerturbative QCDAtomic and Molecular Physics and OpticsUnderlying eventdescription
Abstract In this talk we address the problem of the structure of the underlying event and its dependence upon a specific trigger. Generally speaking, events selected without any special trigger, like the minimum bias events, need not have the same characteristics as those selected by the jet trigger or through the W and Z-boson selection criteria. We use perturbative QCD in order to unfold part of the structure. In particular we concentrate on the contribution to the underlying event structure which comes from initial state bremsstrahlung. In the present paper we discuss the relationship between transverse momentum and transverse energy for W and Z-boson production both in the low as well as in the high transverse momentum sector. In order to join smoothly these two regions we develop a formalism based on Bloch Nordsieck regulator in the infrared sensitive region.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-01-01 | Nuclear Physics B - Proceedings Supplements |