Measurement of the mass dependence of the transverse momentum of lepton pairs in Drell–Yan production in proton–proton collisions at $$\sqrt{s} = 13\,\text {Te\hspace{-.08em}V} $$ s = 13 Te V
Abstract The double differential cross sections of the Drell–Yan lepton pair ( $$\ell ^+\ell ^-$$ ℓ +...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2023
|
| Online Access: | https://hdl.handle.net/1721.1/151166 |
| Summary: | Abstract
The double differential cross sections of the Drell–Yan lepton pair (
$$\ell ^+\ell ^-$$
ℓ
+
ℓ
-
, dielectron or dimuon) production are measured as functions of the invariant mass
$$m_{\ell \ell }$$
m
ℓ
ℓ
, transverse momentum
$$p_{\textrm{T}} (\ell \ell )$$
p
T
(
ℓ
ℓ
)
, and
$$\varphi ^{*}_{\eta }$$
φ
η
∗
. The
$$\varphi ^{*}_{\eta }$$
φ
η
∗
observable, derived from angular measurements of the leptons and highly correlated with
$$p_{\textrm{T}} (\ell \ell )$$
p
T
(
ℓ
ℓ
)
, is used to probe the low-
$$p_{\textrm{T}} (\ell \ell )$$
p
T
(
ℓ
ℓ
)
region in a complementary way. Dilepton masses up to 1
$$\,\text {Te\hspace{-.08em}V}$$
Te
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
$$m_{\ell \ell }$$
m
ℓ
ℓ
ranges to those in the Z mass peak interval are presented. The collected data correspond to an integrated luminosity of 36.3
$$\,\text {fb}^{-1}$$
fb
-
1
of proton–proton collisions recorded with the CMS detector at the LHC at a centre-of-mass energy of 13
$$\,\text {Te\hspace{-.08em}V}$$
Te
V
. Measurements are compared with predictions based on perturbative quantum chromodynamics, including soft-gluon resummation. |
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