SMEFT and the Drell-Yan Process at High Energy

Understand

The Drell-Yan process is a copious source of lepton pairs at high energy and is measured with great precision at the Large Hadron Collider (LHC).

• Barring any new light particles, beyond the Standard Model effects can be studied in Drell-Yan production using an effective field theory.
• At tree level, new 4-fermion interactions dominate, while at one loop operators modifying 3-gauge boson couplings contribute effects that are enhanced at high energy.
• We study the sensitivity of the neutral Drell-Yan process to these dimension-6 operators and compare the sensitivity to that of $W^+W^-$ pair production at the LHC.