Antonio Ortiz Velazques (UNA, Mexico): Disentangling the soft and hard components of the pp interactions
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Europe/Budapest
Tanacsterem
Tanacsterem
Description
A new method to extract information from the pp data is proposed. The
approach is based on the use of the event structure variables:
sphericity and spherocity, to split the data into enhanced soft and hard
processes samples corresponding to events with large and low numbers of
multi-parton interactions, respectively. The present study was developed
in the framework of Pythia 8.180 for inelastic pp collisions at sqrt(s)
=7 TeV. As an application of the method, a study of the identified
particle transverse momentum spectra and their ratios; is presented for
soft (isotropic) and hard (jetty-like) events. The flow-like effect on
these observables due to multi-parton interactions and color
reconnection is relevant for soft events suggesting that partons inside
the jet do not feel color reconnection and its flow-like consequences.
http://arxiv.org/abs/1404.2372
