Measurement of $W^{\pm}$-boson and $Z$-boson production cross-sections in $pp$ collisions at $\sqrt{s}=2.76$ TeV with the ATLAS detector

ArXiv 1907.03567 (2019)

Search for heavy neutral Higgs bosons produced in association with $b$-quarks and decaying into $b$-quarks at $\sqrt{s}=13$ TeV with the ATLAS detector

ArXiv 1907.02749 (2019)

Probing multiple-frequency atom-photon interactions with ultracold atoms

New Journal of Physics IOP Publishing 21:5 (2019) 073067

Authors:

Kathrin Luksch, Elliot Bentine, Adam Barker, Shinichi Sunami, TL Harte, Ben Yuen, Christopher Foot

Abstract:

We dress atoms with multiple-radiofrequency fields and investigate the spectrum of transitions driven by an additional probe field. A complete theoretical description of this rich spectrum is presented, in which we find allowed transitions and determine their amplitudes using the resolvent formalism. Experimentally, we observe transitions up to sixth order in the probe field using radiofrequency spectroscopy of Bose-Einstein condensates trapped in single- and multiple-radiofrequency-dressed potentials. We find excellent agreement between theory and experiment, including the prediction and verification of previously unobserved transitions, even in the single-radiofrequency case.

Preserving physically important variables in optimal event selections: A case study in Higgs physics

ArXiv 1907.02098 (2019)

Authors:

Philipp Windischhofer, Miha Zgubic, Daniela Bortoletto

A compact air cooling system for testing silicon detectors based on a vortex chiller

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Elsevier 940:1 October 2019 (2019) 405-409

Authors:

K Metodiev, L Vigani, R Plackett, K Arndt, D Wood, Dp Weatherill, M Mironova, D Bortoletto, I Shipsey

Abstract:

The testing of irradiated silicon detectors requires maintaining low ( -10 °C) temperatures, to simulate a realistic operating environment and prevent annealing effects from distorting the results of the measurement. Keeping a device cool and dry is challenging, particularly if the apparatus must be portable. This paper presents a solution for a providing a stable, cool and dry environment for testing an irradiated silicon detector, that is easy to transport and can be installed in charged particle beam areas and irradiation facilities.