CERN Yellow Reports: Monographs, Vol 4 (2018): The Compact Linear Collider (CLIC) – Project Implementation Plan

Aicheler, Markus; Schulte, Daniel; Draper, Michael; Corsini, R.; Stuart, Meghan; Osborne, John A.; Catalan, N.; Burrows, Philip; Stapnes, S.

doi:10.23731/cyrm-2018-004

Cited by 39 publications

(32 citation statements)

References 80 publications

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“…We thank members of the CLIC detector and physics (CLICdp) collaboration and the International Large Detector (ILD) concept group for the ILC for fruitful discussions, valuable comments and suggestions. This contribution was supported by the National Science Centre, Poland, the OPUS project under contract UMO-2017/25/B/ST2/00496 (2018)(2019)(2020)(2021) and the HARMONIA project under contract UMO-2015/18/M/ST2/00518 (2016-2021), and by the German Research Foundation (DFG) under grant number STO 876/4-1 and STO 876/2-2.…”

Section: Acknowledgementsmentioning

confidence: 99%

Sensitivity of future linear $e^+e^-$ colliders to processes of dark matter production with light mediator exchange

Kalinowski,

Kotlarski,

Mekala

et al. 2021

Preprint

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One of the primary goals of the proposed future collider experiments is to search for dark matter (DM) particles using different experimental approaches. High energy e + e − colliders offer unique possibility for the most general search based on the mono-photon signature. As any e + e − collision process may include hard initial-state photon radiation, analysis of the energy spectrum and angular distributions of observed photons can be used to search for hard processes with an invisible final state. Dedicated procedure of merging the matrix element calculations with the lepton ISR structure function was developed to model the Standard Model background processes contributing to mono-photon signature with Whizard.In this work, we consider production of DM particles at the International Linear Collider (ILC) and Compact Linear Collider (CLIC) experiments via a mediator exchange. Detector effects are taken into account within the Delphes fast simulation framework. Limits on the light DM production in a simplified model are set as a function of the mediator mass and width based on the expected two-dimensional distributions of the reconstructed mono-photon events. The experimental sensitivity is extracted in terms of the DM production cross section. Limits on the mediator couplings are then presented for a wide range of mediator masses and widths. For light mediators, for masses up to the centre-of-mass energy of the collider, coupling limits derived from the mono-photon analysis are more stringent than those expected from direct resonance searches in decay channels to SM particles.

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Section: Acknowledgementsmentioning

confidence: 99%

Sensitivity of future linear $e^+e^-$ colliders to processes of dark matter production with light mediator exchange

Kalinowski,

Kotlarski,

Mekala

et al. 2021

Preprint

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“…We consider DM pair-production for ILC running at 500 GeV, with total integrated luminosity of 4 ab −1 [4], and for CLIC running at 3 TeV, with total integrated luminosity of 5 ab −1 [5]. Polarisation of both electron and positron beams is considered for the ILC while only electron beam polarisation is included for CLIC .…”

Section: Analysis Frameworkmentioning

confidence: 99%

Dark matter searches with mono-photon signature at future e$^+$e$^-$ colliders

Kalinowski¹,

Mękała²,

Sopicki³

et al. 2021

Preprint

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As any e + e − scattering process can be accompanied by a hard photon emission from the initial state radiation, the analysis of the energy spectrum and angular distributions of those photons can be used to search for hard processes with an invisible final state. Thus high energy e + e − colliders offer a unique possibility for the most general search of Dark matter based on the mono-photon signature. We consider production of DM particles via a mediator at the International Linear Collider (ILC) and Compact Linear Collider (CLIC) experiments taking into account detector effects within the DELPHES fast simulation framework. Limits on the light DM production in a generic model are set for a wide range of mediator masses and widths. For mediator masses up to the centre-of-mass energy of the collider, results from the mono-photon analysis are more stringent than the limits expected from direct resonance searches in Standard Model decay channels.

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“…The proposed future lepton colliders such as the International Linear Collider (ILC) [21][22][23], the Compact Linear Collider (CLIC) [24][25][26], Circular Electron-Positron Collider (CPEC) [27,28] and Future Circular Collider with electron-positron collisions (FCC-ee) with highest-luminosity [29] are expected to provide an extraordinary place to perform flavor physics studies. There are a variety of theories that give rise to LFV.…”

Section: Introductionmentioning

confidence: 99%

Searching for lepton flavor violating interactions at future electron-positron colliders

Etesami,

Jafari,

Najafabadi

et al. 2021

Preprint

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Lepton flavor violating interactions are absent in the standard model but are expected in various beyond standard models. In this work, the potential of the future circular electronpositron collider to probe the four fermion lepton flavor couplings via the e + e − → e ± τ ∓ process is revisited by means of an effective field theory approach. We provide constraints at 95%CL on the dimension-six Wilson coefficients including major sources of background processes and considering realistic detector effects at four expected operation energies √ s = 157.5, 162.5, 240 and 365 GeV according to their corresponding integrated luminosities. We demonstrate that statistical combination of the results from four center-of-mass energies, improve the sensitivity to the LFV couplings significantly. We compare the results with the prospects from Belle II with 50 ab −1 and other studies at electron-positron colliders.

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CERN Yellow Reports: Monographs, Vol 4 (2018): The Compact Linear Collider (CLIC) – Project Implementation Plan

Cited by 39 publications

References 80 publications

Sensitivity of future linear $e^+e^-$ colliders to processes of dark matter production with light mediator exchange

Sensitivity of future linear $e^+e^-$ colliders to processes of dark matter production with light mediator exchange

Dark matter searches with mono-photon signature at future e$^+$e$^-$ colliders

Searching for lepton flavor violating interactions at future electron-positron colliders

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