The International Linear Collider Technical Design Report - Volume 3.II: Accelerator Baseline Design

The Circular Electron Positron Collider (CEPC) as a Higgs factory was proposed in September 2013. The preliminary conceptual design report was completed in 2015.1 The CEPC detector design was using International Linear Collider Detector — ILD2 as an initial baseline. The CEPC calorimeters, including the high granularity electromagnetic calorimeter (ECAL) and the hadron calorimeter (HCAL), are designed for precise energy measurements of electrons, photons, taus and hadronic jets. The basic resolution requirements for the ECAL and HCAL are about 16%[Formula: see text][Formula: see text] (GeV) and 50%[Formula: see text][Formula: see text] (GeV), respectively. To fully exploit the physics potential of the Higgs, [Formula: see text], [Formula: see text] and related Standard Model processes, the jet energy resolution is required to reach 3%–4%, or 30%/[Formula: see text] (GeV) at energies below about 100 GeV. To achieve the required performance, a Particle Flow Algorithm (PFA) — oriented calorimetry system is being considered as the baseline design. The CEPC ECAL detector options include silicon–tungsten or scintillator–tungsten structures with analog readout, while the HCAL detector options have scintillator or gaseous detector as the active sensor and iron as the absorber. Some latest R&D studies about ECAL and HCAL within the CEPC working group is also presented.

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The measurement of the $$H\rightarrow \tau \tau $$ signal strength in the future $$e^{+}e^{-}$$ Higgs factories

The European Physical Journal C ◽

10.1140/epjc/s10052-019-7557-y ◽

2020 ◽

Vol 80 (1) ◽

Cited By ~ 1

Author(s):

Dan Yu ◽

Manqi Ruan ◽

Vincent Boudry ◽

Henri Videau ◽

Jean-Claude Brient ◽

...

Keyword(s):

Linear Collider ◽

Simulation Analysis ◽

Center Of Mass ◽

International Linear Collider ◽

Signal Strength ◽

Relative Accuracy ◽

Hadronic Decay ◽

Beam Polarization ◽

Baseline Design ◽

Electron Positron

AbstractThe Circular Electron Positron Collider and the International Linear Collider are two electron-positron Higgs factories. They are designed to operate at a center-of-mass energy of 240 and 250 GeV and accumulate 5.6 and 2 $$ab^{-1}$$ab-1 of integrated luminosity. This paper estimates their performance on the $$H \rightarrow \tau ^{+}\tau ^{-}$$H→τ+τ- benchmark measurement. Using the full simulation analysis, the CEPC is expected to measure the signal strength to a relative accuracy of 0.8%. Extrapolating to the ILC setup, we conclude the ILC can reach a relative accuracy of 1.1% or 1.2%, corresponding to two benchmark beam polarization setups. The physics requirement on the mass resolution of the Higgs boson with hadronic decay final states is also discussed, showing that the CEPC baseline design and reconstruction fulfill the accuracy requirement of the $$H\rightarrow \tau ^{+}\tau ^{-}$$H→τ+τ- signal strength.

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Linear Colliders

Reviews of Accelerator Science and Technology ◽

10.1142/s1793626814300060 ◽

2014 ◽

Vol 07 ◽

pp. 115-136

Author(s):

Akira Yamamoto ◽

Kaoru Yokoya

Keyword(s):

Linear Collider ◽

International Linear Collider ◽

Electron Positron ◽

Linear Colliders ◽

Technical Design Report ◽

Superconducting Rf ◽

Technical Features ◽

Energy Frontier ◽

Conceptual Design Report

An overview of linear collider programs is given. The history and technical challenges are described and the pioneering electron–positron linear collider, the SLC, is first introduced. For future energy frontier linear collider projects, the International Linear Collider (ILC) and the Compact Linear Collider (CLIC) are introduced and their technical features are discussed. The ILC is based on superconducting RF technology and the CLIC is based on two-beam acceleration technology. The ILC collaboration completed the Technical Design Report in 2013, and has come to the stage of "Design to Reality." The CLIC collaboration published the Conceptual Design Report in 2012, and the key technology demonstration is in progress. The prospects for further advanced acceleration technology are briefly discussed for possible long-term future linear colliders.

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Presentations from LoopFest V: Radiative Corrections For The International Linear Collider: Multi-Loops And Multi-Legs, 19-21 June 2006, SLAC, Menlo Park, California

10.2172/894926 ◽

2006 ◽

Author(s):

L Dixon

Keyword(s):

Linear Collider ◽

International Linear Collider ◽

Radiative Corrections

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