Measurement of the production cross-section of $$J/\psi $$ and $$\psi (2{\textrm{S}})$$ mesons in pp collisions at $$\sqrt{s} = 13$$ TeV with the ATLAS detector

Media type: E-Article
Title: Measurement of the production cross-section of $$J/\psi $$ and $$\psi (2{\textrm{S}})$$ mesons in pp collisions at $$\sqrt{s} = 13$$ TeV with the ATLAS detector
Contributor: Aad, G.; Abbott, B.; Abeling, K.; Abicht, N. J.; Abidi, S. H.; Aboulhorma, A.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Acharya, B. S.; Bourdarios, C. Adam; Adamczyk, L.; Addepalli, S. V.; Addison, M. J.; Adelman, J.; Adiguzel, A.; Adye, T.; Affolder, A. A.; Afik, Y.; Agaras, M. N.; Agarwala, J.; Aggarwal, A.; Agheorghiesei, C.; Ahmad, A.; [...]
Published: Springer Science and Business Media LLC, 2024
Published in: The European Physical Journal C, 84 (2024) 2
Language: English
DOI: 10.1140/epjc/s10052-024-12439-9
ISSN: 1434-6052
Origination:
Footnote:
Description: <jats:title>Abstract</jats:title><jats:p>Measurements of the differential production cross-sections of prompt and non-prompt <jats:inline-formula><jats:alternatives><jats:tex-math>$$J/\psi $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>J</mml:mi> <mml:mo>/</mml:mo> <mml:mi>ψ</mml:mi> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> and <jats:inline-formula><jats:alternatives><jats:tex-math>$$\psi (2{\textrm{S}})$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>ψ</mml:mi> <mml:mo>(</mml:mo> <mml:mn>2</mml:mn> <mml:mtext>S</mml:mtext> <mml:mo>)</mml:mo> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> mesons with transverse momenta between 8 and 360 GeV and rapidity in the range <jats:inline-formula><jats:alternatives><jats:tex-math>$$|y|<2$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>|</mml:mo> <mml:mi>y</mml:mi> <mml:mo>|</mml:mo> <mml:mo><</mml:mo> <mml:mn>2</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> are reported. Furthermore, measurements of the non-prompt fractions of <jats:inline-formula><jats:alternatives><jats:tex-math>$$J/\psi $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>J</mml:mi> <mml:mo>/</mml:mo> <mml:mi>ψ</mml:mi> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> and <jats:inline-formula><jats:alternatives><jats:tex-math>$$\psi (2{\textrm{S}})$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>ψ</mml:mi> <mml:mo>(</mml:mo> <mml:mn>2</mml:mn> <mml:mtext>S</mml:mtext> <mml:mo>)</mml:mo> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula>, and the prompt and non-prompt <jats:inline-formula><jats:alternatives><jats:tex-math>$$\psi (2{\textrm{S}})$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>ψ</mml:mi> <mml:mo>(</mml:mo> <mml:mn>2</mml:mn> <mml:mtext>S</mml:mtext> <mml:mo>)</mml:mo> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula>-to-<jats:inline-formula><jats:alternatives><jats:tex-math>$$J/\psi $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>J</mml:mi> <mml:mo>/</mml:mo> <mml:mi>ψ</mml:mi> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> production ratios, are presented. The analysis is performed using 140 fb<jats:inline-formula><jats:alternatives><jats:tex-math>$$^{-1}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:math></jats:alternatives></jats:inline-formula> of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sqrt{s}=13$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13</mml:mn> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> TeV <jats:italic>pp</jats:italic> collision data recorded by the ATLAS detector at the LHC during the years 2015–2018.</jats:p>
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