Strong field processes in beam-beam interactions at the Compact Linear Collider

Esberg, J.; Uggerhøj, U. I.; Dalena, B.; Schulte, Daniel

doi:10.1103/physrevstab.17.051003

Cited by 19 publications

(13 citation statements)

References 34 publications

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“…6). Moreover, the beam-beam collision can be designed as a charge-asymmetric setup, namely, with a nC electron beam and a hundreds-of-pC positron beam, which can significantly reduce the beam disruption at the interaction point [72]. Furthermore, the emittance of produced muons can be reduced by the tunable energy asymmetry of tens of MeV between electron and positron beams.…”

Section: I)mentioning

confidence: 99%

Generation of arbitrarily polarized muon pairs via polarized $e^-e^+$ collision

Lu,

Zhao,

Wan

et al. 2022

Preprint

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Generation of arbitrarily spin polarized muon pairs is investigated via polarized e − e + collision. We calculate the fully spin-resolved cross section dσ e − e + →µ − µ + and utilize the Monte Carlo method of binary collision to describe the production and polarization processes of muon pairs. We find that, due to the dependence of mixed helicities on the scattering angle, arbitrarily polarized muon pairs with both of the longitudinal and transverse spin components can be produced. The collision of tightly collimated electron and positron beams with highly longitudinal polarization and nC charge can generate about 40% muon pairs with longitudinal polarization and about 60% muon pairs with transverse polarization. The compact high-flux e − e + → µ − µ + muon source could be implemented through the next-generation laser-plasma linear collider, and would be essential to facilitate the investigation of fundamental physics and the measurement technology in broad areas.

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Section: I)mentioning

confidence: 99%

Generation of arbitrarily polarized muon pairs via polarized $e^-e^+$ collision

Lu,

Zhao,

Wan

et al. 2022

Preprint

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“…Earlier experiments achieved higher χ e ;7 with the use of tungsten, rather than silicon, targets due to the stronger nuclear field [36]. χ e >1 will also be probed in beam-beam interactions in the next generation of linear colliders [37,38].…”

Section: Effect Of Radiative Losses On the Maximum χ Ementioning

confidence: 99%

Reaching supercritical field strengths with intense lasers

et al. 2019

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It is conjectured that all perturbative approaches to quantum electrodynamics (QED) break down in the collision of a high-energy electron beam with an intense laser, when the laser fields are boosted to 'supercritical' strengths far greater than the critical field of QED. As field strengths increase toward this regime, cascades of photon emission and electron-positron pair creation are expected, as well as the onset of substantial radiative corrections. Here we identify the important role played by the collision angle in mitigating energy losses to photon emission that would otherwise prevent the electrons reaching the supercritical regime. We show that a collision between an electron beam with energy in the tens of GeV and a laser pulse of intensity -10 W cm 24 2 at oblique, or even normal, incidence is a viable platform for studying the breakdown of perturbative strong-field QED. Our results have implications for the design of near-term experiments as they predict that certain quantum effects are enhanced at oblique incidence.

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“…The interest of generating such extreme fields actually goes far beyond testing theoretical predictions. Laboratory experiments on SF QED will provide a new access to the physics of relativistic quantum plasmas [4] and physics in extreme conditions [10] , two rich scientific fields that are highly relevant for high-energy astrophysical events such as pulsars, magnetars, supernovae and γ-ray bursts [11][12][13] , as well as for the design of future particle colliders [14] . Looking further ahead, this should ultimately open the way to a new type of 'particle physics' experiments where the nonlinear optical properties of the fermionic quantum vacuum will be measured, potentially revealing properties of quantum fields beyond the standard model such as the existence of axions [15,16] or millicharged particles [17] .…”

Section: Introductionmentioning

confidence: 99%

Reflecting petawatt lasers off relativistic plasma mirrors: a realistic path to the Schwinger limit

Quéré

Vincenti

2021

High Pow Laser Sci Eng

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The quantum vacuum plays a central role in physics. Quantum electrodynamics (QED) predicts that the properties of the fermionic quantum vacuum can be probed by extremely large electromagnetic fields. The typical field amplitudes required correspond to the onset of the ‘optical breakdown’ of this vacuum, expected at light intensities >4.7×1029 W/cm2. Approaching this ‘Schwinger limit’ would enable testing of major but still unverified predictions of QED. Yet, the Schwinger limit is seven orders of magnitude above the present record in light intensity achieved by high-power lasers. To close this considerable gap, a promising paradigm consists of reflecting these laser beams off a mirror in relativistic motion, to induce a Doppler effect that compresses the light pulse in time down to the attosecond range and converts it to shorter wavelengths, which can then be focused much more tightly than the initial laser light. However, this faces a major experimental hurdle: how to generate such relativistic mirrors? In this article, we explain how this challenge could nowadays be tackled by using so-called ‘relativistic plasma mirrors’. We argue that approaching the Schwinger limit in the coming years by applying this scheme to the latest generation of petawatt-class lasers is a challenging but realistic objective.

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Strong field processes in beam-beam interactions at the Compact Linear Collider

Cited by 19 publications

References 34 publications

Generation of arbitrarily polarized muon pairs via polarized $e^-e^+$ collision

Generation of arbitrarily polarized muon pairs via polarized $e^-e^+$ collision

Reaching supercritical field strengths with intense lasers

Reflecting petawatt lasers off relativistic plasma mirrors: a realistic path to the Schwinger limit

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