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 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.

Measurement of the mass dependence of the transverse momentum of lepton pairs in Drell–Yan production in proton–proton collisions at $$\sqrt{s} = 13\,\text {Te\hspace{-.08em}V} $$

C. Aime‘;S. Calzaferri;D. Fiorina;P. Montagna;S. P. Ratti;C. Riccardi;P. Salvini;I. Vai;P. Vitulo;
2023-01-01

Abstract

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 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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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/1483539
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