J/ψ production as a function of charged-particle multiplicity in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}} $$ = 8.16 TeV
抄録
<jats:title>A<jats:sc>bstract</jats:sc> </jats:title><jats:p>Inclusive J<jats:italic>/ψ</jats:italic> yields and average transverse momenta in p-Pb collisions at a center-of-mass energy per nucleon pair <jats:inline-formula><jats:alternatives><jats:tex-math>$$ \sqrt{s_{\mathrm{NN}}} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mi>NN</mml:mi> </mml:msub> </mml:msqrt> </mml:math></jats:alternatives></jats:inline-formula> = 8<jats:italic>.</jats:italic>16 TeV are measured as a function of the charged-particle pseudorapidity density with ALICE. The J<jats:italic>/ψ</jats:italic> mesons are reconstructed at forward (2<jats:italic>.</jats:italic>03 <jats:italic>< y</jats:italic><jats:sub>cms</jats:sub><jats:italic><</jats:italic> 3<jats:italic>.</jats:italic>53) and backward (<jats:italic>−</jats:italic>4<jats:italic>.</jats:italic>46 <jats:italic>< y</jats:italic><jats:sub>cms</jats:sub><jats:italic>< −</jats:italic>2<jats:italic>.</jats:italic>96) center-of-mass rapidity in their dimuon decay channel while the charged-particle pseudorapidity density is measured around midrapidity. The J<jats:italic>/ψ</jats:italic> yields at forward and backward rapidity normalized to their respective average values increase with the normalized charged-particle pseudorapidity density, the former showing a weaker increase than the latter. The normalized average transverse momenta at forward and backward rapidity manifest a steady increase from low to high charged-particle pseudorapidity density with a saturation beyond the average value.</jats:p>
収録刊行物
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- Journal of High Energy Physics
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Journal of High Energy Physics 2020 (9), 2020-09
Springer Science and Business Media LLC