Measurement of the mass dependence of the transverse momentum of lepton pairs in Drell–Yan production in proton–proton collisions at $\sqrt{s} = 13\,\text {Te\hspace{-.08em}V} $
(2023) European Physical Journal C — Vol. 83 (2023)
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- The double differential cross sections of the Drell–Yan lepton pair ($\ell ^+\ell ^-$, dielectron or dimuon) production are measured as functions of the invariant mass $m_{\ell \ell }$, transverse momentum $p_{\textrm{T}} (\ell \ell )$, and $\varphi ^{*}_{\eta }$. The $\varphi ^{*}_{\eta }$ observable, derived from angular measurements of the leptons and highly correlated with $p_{\textrm{T}} (\ell \ell )$, is used to probe the low-$p_{\textrm{T}} (\ell \ell )$ region in a complementary way. Dilepton masses up to 1$\,\text {Te\hspace{-.08em}V}$ 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 $m_{\ell \ell }$ ranges to those in the Z mass peak interval are presented. The collected data correspond to an integrated luminosity of 36.3$\,\text {fb}^{-1}$ of proton–proton collisions marc:recorded with the CMS detector at the LHC at a centre-of-mass energy of 13$\,\text {Te\hspace{-.08em}V}$. Measurements are compared with predictions based on perturbative quantum chromodynamics, including soft-gluon resummation.
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Bethani, A., Bruno, G., Bury, F., Caputo, C., David, P., Delaere, C., Donertas, I. S., Giammanco, A., Jaffel, K., Jain, S., Jain, S., Lemaitre, V., Mondal, K., Prisciandaro, J., Taliercio, A., Teklishyn, M., Tran, T. T., Vischia, P., Wertz, S., et al. (2023). Measurement of the mass dependence of the transverse momentum of lepton pairs in Drell–Yan production in proton–proton collisions at $\sqrt{s} = 13\,\text {Te\hspace{-.08em}V} $. European Physical Journal C, 83. https://doi.org/10.1140/epjc/s10052-023-11631-7 (Original work published 2023)