Les Houches 2021-physics at TeV colliders: report on the standard model precision wishlist

Les Houches activities in 2021 were truncated due to the lack of an in-person component. However, given the rapid progress in the field and the restart of the LHC, we wanted to continue the bi-yearly tradition of updating the standard model precision wishlist. In this work we therefore review recent progress (since Les Houches 2019) in fixed-order computations for LHC applications. In addition, necessary ingredients for such calculations such as parton distribution functions, amplitudes, and subtraction methods are discussed. Finally, we indicate processes and missing higher-order corrections that are required to reach the theoretical accuracy that matches the anticipated experimental precision.

Automated summary

Due to the lack of in-person activities, Les Houches activities in 2021 were truncated. However, in light of the rapid progress in the field and the restart of the LHC, the bi-yearly tradition of updating the standard model precision wishlist was continued. The paper reviews recent progress in fixed-order computations for LHC applications since Les Houches 2019 and discusses necessary ingredients for such calculations, including parton distribution functions, amplitudes, and subtraction methods. Processes and missing higher-order corrections needed to achieve the theoretical accuracy matching the anticipated experimental precision are also indicated.