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

Medientyp: E-Artikel
Titel: Measurement of the mass dependence of the transverse momentum of lepton pairs in Drell–Yan production in proton–proton collisions at $$\sqrt{s} = 13\,\text {Te\hspace{-.08em}V} $$
Beteiligte: Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Dragicevic, M.; Valle, A. Escalante Del; Frühwirth, R.; Jeitler, M.; Krammer, N.; Lechner, L.; Liko, D.; Mikulec, I.; Paulitsch, P.; Pitters, F. M.; Schieck, J.; Schöfbeck, R.; Spanring, M.; Templ, S.; Waltenberger, W.; Wulz, C. -E.; Darwish, M. R.; De Wolf, E. A.; Janssen, T.; [...]
Erschienen: Springer Science and Business Media LLC, 2023
Erschienen in: The European Physical Journal C
Sprache: Englisch
DOI: 10.1140/epjc/s10052-023-11631-7
ISSN: 1434-6052
Schlagwörter: Physics and Astronomy (miscellaneous) ; Engineering (miscellaneous)
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Beschreibung: <jats:title>Abstract</jats:title><jats:p>The double differential cross sections of the Drell–Yan lepton pair (<jats:inline-formula><jats:alternatives><jats:tex-math>$$\ell ^+\ell ^-$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mi>ℓ</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>ℓ</mml:mi> <mml:mo>-</mml:mo> </mml:msup> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula>, dielectron or dimuon) production are measured as functions of the invariant mass <jats:inline-formula><jats:alternatives><jats:tex-math>$$m_{\ell \ell }$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>m</mml:mi> <mml:mrow> <mml:mi>ℓ</mml:mi> <mml:mi>ℓ</mml:mi> </mml:mrow> </mml:msub> </mml:math></jats:alternatives></jats:inline-formula>, transverse momentum <jats:inline-formula><jats:alternatives><jats:tex-math>$$p_{\textrm{T}} (\ell \ell )$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>p</mml:mi> <mml:mtext>T</mml:mtext> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ℓ</mml:mi> <mml:mi>ℓ</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula>, and <jats:inline-formula><jats:alternatives><jats:tex-math>$$\varphi ^{*}_{\eta }$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>φ</mml:mi> <mml:mi>η</mml:mi> <mml:mrow> <mml:mrow /> <mml:mo>∗</mml:mo> </mml:mrow> </mml:msubsup> </mml:math></jats:alternatives></jats:inline-formula>. The <jats:inline-formula><jats:alternatives><jats:tex-math>$$\varphi ^{*}_{\eta }$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>φ</mml:mi> <mml:mi>η</mml:mi> <mml:mrow> <mml:mrow /> <mml:mo>∗</mml:mo> </mml:mrow> </mml:msubsup> </mml:math></jats:alternatives></jats:inline-formula> observable, derived from angular measurements of the leptons and highly correlated with <jats:inline-formula><jats:alternatives><jats:tex-math>$$p_{\textrm{T}} (\ell \ell )$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>p</mml:mi> <mml:mtext>T</mml:mtext> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ℓ</mml:mi> <mml:mi>ℓ</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula>, is used to probe the low-<jats:inline-formula><jats:alternatives><jats:tex-math>$$p_{\textrm{T}} (\ell \ell )$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>p</mml:mi> <mml:mtext>T</mml:mtext> </mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>ℓ</mml:mi> <mml:mi>ℓ</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> region in a complementary way. Dilepton masses up to 1<jats:inline-formula><jats:alternatives><jats:tex-math>$$\,\text {Te\hspace{-.08em}V}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace /> <mml:mtext>Te</mml:mtext> <mml:mspace /> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> 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 <jats:inline-formula><jats:alternatives><jats:tex-math>$$m_{\ell \ell }$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>m</mml:mi> <mml:mrow> <mml:mi>ℓ</mml:mi> <mml:mi>ℓ</mml:mi> </mml:mrow> </mml:msub> </mml:math></jats:alternatives></jats:inline-formula> ranges to those in the Z mass peak interval are presented. The collected data correspond to an integrated luminosity of 36.3<jats:inline-formula><jats:alternatives><jats:tex-math>$$\,\text {fb}^{-1}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace /> <mml:msup> <mml:mtext>fb</mml:mtext> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> of proton–proton collisions recorded with the CMS detector at the LHC at a centre-of-mass energy of 13<jats:inline-formula><jats:alternatives><jats:tex-math>$$\,\text {Te\hspace{-.08em}V}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace /> <mml:mtext>Te</mml:mtext> <mml:mspace /> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula>. Measurements are compared with predictions based on perturbative quantum chromodynamics, including soft-gluon resummation.</jats:p>
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