0000000000718862
AUTHOR
Joan Fuster
Documents. Una primera nota sobre Europa
En el número 50 de la revista L'Espill trobaràs un dossier monogràfic sobre "La crisi europea. Europa com a idea i com a projecte, avui", amb contribucions d'Adam Zagajewski, Joan F. Mira, Antoni Mora, Marina Garcés, Simona Škrabec, Andrei Kurkov, Antoni Martí Monterde, Enzo Traverso, Wolf Lepenies, Robert Menasse, Josep Maria Terricabras, Manuel Sanchis, Estanislau Vidal-Folch, Sebastian Landschbauer, Étienne Balibar, Ulrike Guérot, Josep Maria Martorell, Montserrat Daban, Francesc Xavier Grau i Josep Lluís Gómez Mompart. A més, una enquesta d'Adolf Beltran sobre el present i el futur d'Europa i dos documents, de Joan Fuster i de Vicent Ventura.
m(b)(m(z)) from jet production at the Z peak in the Cambridge algorithm
We consider the production of heavy quark jets at the $Z$-pole at the next-to-leading order (NLO) using the {\it Cambridge jet-algorithm}. We study the effects of the quark mass in two- and three-jet observables and the uncertainty due to unknown higher order corrections as well as due to fragmentation. We found that the three-jet observable has remarkably small NLO corrections, which are stable with respect to the change of the renormalization scale, when expressed in terms of the {\it running quark mass} at the $m_Z$-scale. The size of the hadronization uncertainty for this observable remains reasonably small and is very stable with respect to changes in the jet resolution parameter $y_c$.