782 citations · 4.1k across the 60 of their papers we have counts for
53 papers · 1 filter
dE/dx from boosted long-lived particles
Gian F. Giudice, Matthew McCullough, Daniele Teresi
At colliders massive long-lived charged particles could be revealed through their anomalously large ionisation energy loss . In this paper we explore a class of scenarios in…
The dark side of the proton
Matthew McCullough, James Moore, Maria Ubiali
We study the sensitivity of the High-Luminosity LHC to a light baryonic dark photon B, primarily coupled to quarks, as a constituent of the proton. This is achieved by allowing for…
Gegenbauer's Twin
Gauthier Durieux, Matthew McCullough, Ennio Salvioni
In Twin Higgs models the dominant source of fine-tuning is the cancellation of order required to obtain a Standard Model-like Higgs, where and are the electroweak…
Self-Organised Localisation
Gian F. Giudice, Matthew McCullough, Tevong You
We describe a new phenomenon in quantum cosmology: self-organised localisation. When the fundamental parameters of a theory are functions of a scalar field subject to large fluctua…
Charting the Fifth Force Landscape
Hannah Banks, Matthew McCullough
Fifth forces arising from hidden sector scalar operator exchange, as probed in a variety of present and planned experiments, can be captured by a general dispersion relation involv…
Undulating Dark Matter
Joe Davighi, Matthew McCullough, Joseph Tooby-Smith
We suggest that an interplay between microscopic and macroscopic physics can give rise to dark matter (DM) whose interactions with the visible sector fundamentally undulate in time…
Supersoft Stops
Timothy Cohen, Nathaniel Craig, Seth Koren +2
In a supersymmetric (SUSY) theory, the IR-contributions to the Higgs mass are calculable below the mediation scale in terms of the IR field content and parameters.…
The -Parameter: An Oblique Higgs View
Christoph Englert, Gian F. Giudice, Admir Greljo +1
We study, from theoretical and phenomenological angles, the Higgs boson oblique parameter , as the hallmark of off-shell Higgs physics. is defined as the Wilson…
Clockwork/Linear Dilaton: Structure and phenomenology
Riccardo Torre
I briefly discuss the main phenomenological features and constraints of the Clockwork/Linear Dilaton (CW/LD) 5D geometry. This contribution is based on the work of ref. arXiv:1711.…
Les Houches 2017: Physics at TeV Colliders New Physics Working Group Report
G. Brooijmans, M. Dolan, S. Gori +80
We present the activities of the `New Physics' working group for the `Physics at TeV Colliders' workshop (Les Houches, France, 5--23 June, 2017). Our report includes new physics st…
The Hyperbolic Higgs
Timothy Cohen, Nathaniel Craig, Gian F. Giudice +1
We introduce the Hyperbolic Higgs, a novel solution to the little hierarchy problem that features Standard Model neutral scalar top partners. At one-loop order, the protection from…
Clockwork / Linear Dilaton: Structure and Phenomenology
Gian F. Giudice, Yevgeny Kats, Matthew McCullough +2
The linear dilaton geometry in five dimensions, rediscovered recently in the continuum limit of the clockwork model, may offer a solution to the hierarchy problem which is qualitat…
Comment on "Disassembling the Clockwork Mechanism"
Gian F. Giudice, Matthew McCullough
We respond to the criticism raised in the paper arXiv:1704.07831.
Simplified Models for Displaced Dark Matter Signatures
Oliver Buchmueller, Albert De Roeck, Matthew McCullough +4
We propose a systematic programme to search for long-lived neutral particle signatures through a minimal set of displaced searches requiring significant missing transverse energy (…
Colorful Twisted Top Partners and Partnerium at the LHC
Yevgeny Kats, Matthew McCullough, Gilad Perez +2
In scenarios that stabilize the electroweak scale, the top quark is typically accompanied by partner particles. In this work, we demonstrate how extended stabilizing symmetries can…
A Clockwork Theory
Gian F. Giudice, Matthew McCullough
The clockwork is a mechanism for generating light particles with exponentially suppressed interactions in theories which contain no small parameters at the fundamental level. We de…
Physics at a 100 TeV pp collider: beyond the Standard Model phenomena
T. Golling, M. Hance, P. Harris +111
This report summarises the physics opportunities in the search and study of physics beyond the Standard Model at a 100 TeV pp collider.
Digamma, what next?
Roberto Franceschini, Gian F. Giudice, Jernej F. Kamenik +4
If the 750 GeV resonance in the diphoton channel is confirmed, what are the measurements necessary to infer the properties of the new particle and understand its nature? We address…
Hunting for Dark Particles with Gravitational Waves
Gian F. Giudice, Matthew McCullough, Alfredo Urbano
The LIGO observation of gravitational waves from a binary black hole merger has begun a new era in fundamental physics. If new dark sector particles, be they bosons or fermions, ca…
S-Channel Dark Matter Simplified Models and Unitarity
Christoph Englert, Matthew McCullough, Michael Spannowsky
The ultraviolet structure of -channel mediator dark matter simplified models at hadron colliders is considered. In terms of commonly studied -channel mediator simplified mode…
Theory Advances in BSM Physics
Matthew McCullough
Rather than attempting to summarise the full spectrum of recent advances in Beyond the Standard Model (BSM) theory, which are many, in this talk I will instead take the opportunity…
What is the gamma gamma resonance at 750 GeV?
Roberto Franceschini, Gian F. Giudice, Jernej F. Kamenik +7
Run 2 LHC data show hints of a new resonance in the diphoton distribution at an invariant mass of 750 GeV. We analyse the data in terms of a new boson, extracting information on it…
Natural Heavy Supersymmetry
Brian Batell, Gian F. Giudice, Matthew McCullough
We study how, as a result of the scanning of supersymmetry breaking during the cosmological evolution, a relaxation mechanism can naturally determine a hierarchy between the weak s…
Putting a Stop to di-Higgs Modifications
Brian Batell, Matthew McCullough, Daniel Stolarski +1
Pair production of Higgs bosons at hadron colliders is an enticing channel to search for new physics. New colored particles that couple strongly to the Higgs, such as those most of…