Measurement of the mass dependence of the transverse momentum of lepton pairs in Drell–Yan production in proton–proton collisions at √s = 13TeV

Authors

A. Tumasyan, CMS Collaboration

Document Type

Article

Date of this Version

9-29-2022

Citation

Eur. Phys. J. C (2023) 83:628. https://doi.org/10.1140/epjc/s10052-023-11631-7

Comments

Used by permission.

Abstract

The double differential cross sections of the Drell–Yan lepton pair (ℓ ⁺ ℓ ⁻, dielectron or dimuon) production are measured as functions of the invariant mass m_ℓℓ, transverse momentum p_T(ℓℓ), and ϕ^∗_η. The ϕ^∗_η observable, derived from angular measurements of the leptons and highly correlated with p_T(ℓℓ), is used to probe the low-p_T(ℓℓ) region in a complementary way. Dilepton masses up to 1 TeV are investigated. Additionally, a measurement is performed requiring at least one jet in the final state. To benefit from partial cancellation of the systematic uncertainty, the ratios of the differential cross sections for various m_ℓℓ ranges to those in the Z mass peak interval are presented. The collected data correspond to an integrated luminosity of 36.3 fb−1 of proton–proton collisions recorded with the CMS detector at the LHC at a centre-of-mass energy of 13 TeV. Measurements are compared with predictions based on perturbative quantum chromodynamics, including soft-gluon resummation.