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SUMMARY:Power Corrections and Event shapes: Roadmap to Precision Physics
DTSTART;VALUE=DATE-TIME:20130411T100000Z
DTEND;VALUE=DATE-TIME:20130411T110000Z
DTSTAMP;VALUE=DATE-TIME:20260702T072728Z
UID:indico-event-1906@indico.ific.uv.es
DESCRIPTION:Soft-Collinear Effective Theory (SCET) is an effective field t
 heory designed for describing processes involving collimated jets\, and he
 nce it is perfectly suited to study event shapes. In particular one can us
 e it to make high-order resummation of singular partonic logarithms and to
  identify power corrections. In my talk I will introduce the basic concept
 s of SCET and show how one achieves factorization for a class of event sha
 pes in a simple manner. This enables a very clean treatment of power corre
 ctions in the tail of the distribution\, where an OPE can be defined. I wi
 ll show how to use these high-precission theoretical predictions to determ
 ine the strong coupling constant to very high accuracy\, and present resul
 ts for the thrust distribution\, thrust moments and the C-paramater distri
 bution. Finally I will address the issue of mass effects on power correcti
 ons\, discussing universality breaking and the anomalous dimension of the 
 power corrections.\n\nhttps://indico.ific.uv.es/event/1906/
LOCATION:Edf. Institutos de Investigación Sala Seminarios IFIC
URL:https://indico.ific.uv.es/event/1906/
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