Searches for Dijet Resonances : Using √s = 13 TeV Proton–Proton Collision Data Recorded by the ATLAS Detector at the Large Hadron Collider / by Lydia Audrey Beresford.

Format:

Book

Author/Creator:

Beresford, Lydia Audrey., Author.

Series:

Springer Theses, Recognizing Outstanding Ph.D. Research, 2190-5053

Language:

English

Subjects (All):

Nuclear physics.

Heavy ions.

Particles (Nuclear physics).

Quantum field theory.

Cosmology.

Nuclear Physics, Heavy Ions, Hadrons.

Elementary Particles, Quantum Field Theory.

Local Subjects:

Nuclear Physics, Heavy Ions, Hadrons.

Elementary Particles, Quantum Field Theory.

Cosmology.

Physical Description:

1 online resource (175 pages).

Edition:

1st ed. 2018.

Place of Publication:

Cham : Springer International Publishing : Imprint: Springer, 2018.

Summary:

This book addresses one of the most intriguing mysteries of our universe: the nature of dark matter. The results presented here mark a significant and substantial contribution to the search for new physics, in particular for new particles that couple to dark matter. The first analysis presented is a search for heavy new particles that decay into pairs of hadronic jets (dijets). This pioneering analysis explores unprecedented dijet invariant masses, reaching nearly 7 TeV, and sets constraints on several important new physics models. The two subsequent analyses focus on the difficult low dijet mass region, down to 200 GeV, and employ a novel technique to efficiently gather low-mass dijet events. The results of these analyses transcend the long-standing constraints on dark matter mediator particles set by several existing experiments.

Contents:

Theoretical Background

The ATLAS Experiment

Physics Object Reconstruction in ATLAS

Dijet Invariant Mass Spectra

Searching for Resonances

Limit Setting

Conclusion and Outlook.

Notes:

Includes bibliographical references.

ISBN:

3-319-97520-X