Abstract:
Based on the current physics scene, the future holds more than ever a joint enterprise of precision measurements and direct searches. With its very broad scientific program of heavy flavour precision measurements both in the beauty and the charm sector, as well as forward electroweak precision physics, LHCb has demonstrated to be a powerful forward general purpose detector complementary to ATLAS and CMS. After the expected lifetime of 10 /fb for the current experiment, the precision of most measurements will still be limited by statistics. Experience from Run I shows that systematic uncertainties are not expected to limit the precision down to the theoretical uncertainties. LHCb will thus undergo a major upgrade in LS2 to the ultimate flexibility of a full software trigger, together with a sub-detector configuration which should allow improving the physics yield up to an instantaneous luminosity of 2x10^33 cm-2s-1, with the goal to collect an integrated luminosity of 50-100 /fb by 2028. The flexibility of the upgrade also prepares LHCb for any changes in the physics scene beyond LS2.
The ion program is an important aspect of the complete LHC physics program. For the purpose of detector commissioning and calibration, and physics normalization, the ALICE experiment requires data taking during high-luminosity proton-proton physics. This will evolve with the major upgrade of ALICE which is currently planned for LS2.
In view of the LHC and the injector upgrades, this paper reviews the physics motivations, the upgrade and consolidation programs, and the operational requirements and schedule for LHCb and for the ALICE proton-proton data taking. For completeness, it also covers the impact and aspects of the LHC forward physics program which are relevant for the upgrades of the LHC and the injector complex. In particular it will try to identify any incompatibility with the requirements of the special forward physics runs.