The role of positron polarization for the inital $250$ GeV stage of the International Linear Collider

Keisuke Fujii , Christophe Grojean , Michael E. Peskin , Tim Barklow , Yuanning Gao , Shinya Kanemura , Hyungdo Kim , Jenny List , Mihoko Nojiri , Maxim Perelstein , Roman Pöschl (1) , Jürgen Reuter , Frank Simon , Tomohiko Tanabe , James D. Wells , Jaehoon Yu , Mikael Berggren , Moritz Habermehl , Robert Karl , Gudrid Moortgat-Pick , Sabine Riemann , Junping Tian , Graham W. Wilson , James Brau , Hitoshi Murayama

1 LAL - Laboratoire de l'Accélérateur Linéaire

The International Linear Collider is now proposed with a staged machine design, with the first stage at $\sqrt{s}=$~250 GeV and an integrated luminosity goal of 2~ab$^{-1}$. One of the questions for the machine design is the importance of positron polarization. In this report, we review the impact of positron polarization on the physics goals of the $250$ GeV stage of the ILC and demonstrate that positron polarization has distinct advantages.

Mots clés: ILC Coll; electron positron: scattering; electron positron: linear collider; positron: polarized beam; positron: polarization; polarization: effect

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]; Physique des Hautes Energies - Expérience [hep-ex]

Keisuke Fujii, Christophe Grojean, Michael E. Peskin, Tim Barklow, Yuanning Gao, et al.. The role of positron polarization for the inital $250$ GeV stage of the International Linear Collider. 2018. ⟨hal-01703651⟩