Indico has been updated to v3.3. See our blog post for details on this release. (OTG0146394)

Aug 21 – 25, 2017
University of Washington, Seattle
US/Pacific timezone

Identification of Hadronically Decaying W Bosons and Top Quarks using Multivariate Techniques at ATLAS

Aug 24, 2017, 5:10 PM
107 (Alder Hall)


Alder Hall

Oral Track 2: Data Analysis - Algorithms and Tools Track 2: Data Analysis - Algorithms and Tools


Tatsumi Nitta (Waseda University (JP))


By colliding protons and examining the particle emitted from the collisions, the Large Hadron Collider aims to study the interactions of quarks and gluons at the highest energies accessible in a controlled experimental way. In such collisions, the types of interactions that occur may extend beyond those encompassed by the Standard Model of particle physics. Such interactions typically occur at energy scales much higher than the rest mass of the incoming or outgoing particles. Because of this, reconstructing highly relativistic particles emitted from these collisions is becoming increasingly important. In particular, the ability to identify the originating particle which decays hadronically using distinguishing features of the radiation pattern of the jet plays a central role in searches. This is typically done by the use of a single physically motivated observable constructed from the constituents of the jet. In this work, multiple complementary observables are combined using boosted decision trees and neural networks to increase the ability to distinguish W bosons and top quarks from light quark jets in the ATLAS experiment.

Primary authors

Salvador Marti I Garcia (IFIC-Valencia (UV/EG-CSIC)) Christophe Clement (Stockholm University (SE)) David Miller (University of Chicago (US)) Tatsumi Nitta (Waseda University (JP))

Presentation materials

Peer reviewing