Publications (21)
C: A "Cool" Route to the Higgs Boson and Beyond
Mei Bai, Tim Barklow, Rainer Bartoldus +23
We present a proposal for a cold copper distributed coupling accelerator that can provide a rapid route to precision Higgs physics with a compact 8 km footprint. This proposal is b…
Physics at the CLIC e+e- Linear Collider -- Input to the Snowmass process 2013
Halina Abramowicz, Angel Abusleme, Konstatin Afanaciev +120
This paper summarizes the physics potential of the CLIC high-energy e+e- linear collider. It provides input to the Snowmass 2013 process for the energy-frontier working groups on T…
Higgs Physics with the XFEL Compton Collider Concept at GeV
Umar Sohail Qureshi, Tim Barklow, Ariel Schwartzman
We investigate single Higgs production in GeV collisions at the X-Ray Free Electron (XFEL) Compton Collider (XCC) concept and present an analysis targeting th…
ILC Study Questions for Snowmass 2021
Keisuke Fujii, Christophe Grojean, Michael E. Peskin +32
To aid contributions to the Snowmass 2021 US Community Study on physics at the International Linear Collider and other proposed colliders, we present a list of study quest…
Implications of the 750 GeV gamma-gamma Resonance as a Case Study for the International Linear Collider
Keisuke Fujii, Christophe Grojean, Michael E. Peskin +22
If the gamma-gamma resonance at 750 GeV suggested by 2015 LHC data turns out to be a real effect, what are the implications for the physics case and upgrade path of the Internation…
Physics Case for the 250 GeV Stage of the International Linear Collider
Keisuke Fujii, Christophe Grojean, Michael E. Peskin +21
The International Linear Collider is now proposed with a staged machine design, with the first stage at 250 GeV with a luminosity goal of 2 ab-1. In this paper, we review the physi…
The International Linear Collider: A Global Project
Philip Bambade, Tim Barklow, Ties Behnke +29
The International Linear Collider (ILC) is now under consideration as the next global project in particle physics. In this report, we review of all aspects of the ILC program: the…
The role of positron polarization for the inital GeV stage of the International Linear Collider
Keisuke Fujii, Christophe Grojean, Michael E. Peskin +22
The International Linear Collider is now proposed with a staged machine design, with the first stage at ~250 GeV and an integrated luminosity goal of 2~ab. One of…
Probing the Higgs Self-Coupling with an XFEL Compton Collider at GeV
Santiago Ampudia Castelazo, Umar Sohail Qureshi, Tim Barklow +1
We present a study probing the Higgs self-coupling with the X-ray free-electron laser Compton Collider (XCC) concept. The analysis is performed considering the $γγ\to HH \…
XCC: An X-ray FEL-based Collider Higgs Factory
Tim Barklow, Su Dong, Claudio Emma +8
This report describes the design of a Higgs factory in which 62.8 GeV electron beams collide with 1 keV X-ray free electron laser (XFEL) beams to produce colliding beams of…
Improved Formalism for Precision Higgs Coupling Fits
Tim Barklow, Keisuke Fujii, Sunghoon Jung +5
Future e+e- colliders give the promise of model-independent determinations of the couplings of the Higgs boson. In this paper, we present an improved formalism for extracting Higgs…
Beam Delivery and Beamstrahlung Considerations for Ultra-High Energy Linear Colliders
Tim Barklow, Spencer Gessner, Mark Hogan +27
As part of the Snowmass'21 community planning excercise, the Advanced Accelerator Concepts (AAC) community proposed future linear colliders with center-of-mass energies up to 15 Te…
Tests of the Standard Model at the International Linear Collider
Keisuke Fujii, Christophe Grojean, Michael E. Peskin +19
We present an overview of the capabilities that the International Linear Collider (ILC) offers for precision measurements that probe the Standard Model. First, we discuss the impro…
Beam-Beam Backgrounds for the Cool Copper Collider
Dimitrios Ntounis, Laith Gordon, Lindsey Gray +4
In this paper, we present a comprehensive characterization of beam-beam backgrounds for the Cool Copper Collider (C), a proposed linear collider designed for preci…
Ad interim recommendations for the Higgs boson production cross sections at TeV
Alexander Karlberg, Julie Malcles, Bernhard Mistlberger +21
This note documents predictions for the inclusive production cross sections of the Standard Model Higgs boson at the Large Hadron Collider at a centre of mass energy of 13.6 TeV. T…
C Demonstration Research and Development Plan
Emilio A. Nanni, Martin Breidenbach, Caterina Vernieri +46
C is an opportunity to realize an ee collider for the study of the Higgs boson at GeV, with a well defined upgrade path to 550 GeV while staying on the…
The Potential of the ILC for Discovering New Particles
Keisuke Fujii, Christophe Grojean, Michael E. Peskin +22
This paper addresses the question of whether the International Linear Collider has the capability of discovering new particles that have not already been discovered at the CERN Lar…
Strategy for Understanding the Higgs Physics: The Cool Copper Collider
Sridhara Dasu, Emilio A. Nanni, Michael E. Peskin +26
A program to build a lepton-collider Higgs factory, to precisely measure the couplings of the Higgs boson to other particles, followed by a higher energy run to establish the Higgs…
Model-Independent Determination of the Triple Higgs Coupling at Colliders
Tim Barklow, Keisuke Fujii, Sunghoon Jung +2
The observation of Higgs pair production at high-energy colliders can give evidence for the presence of a triple Higgs coupling. However, the actual determination of the value of t…
Physics Case for the International Linear Collider
Keisuke Fujii, Christophe Grojean, Michael E. Peskin +15
We summarize the physics case for the International Linear Collider (ILC). We review the key motivations for the ILC presented in the literature, updating the projected measurement…
The International Linear Collider Technical Design Report - Volume 2: Physics
Howard Baer, Tim Barklow, Keisuke Fujii +15
The International Linear Collider Technical Design Report (TDR) describes in four volumes the physics case and the design of a 500 GeV centre-of-mass energy linear electron-positro…