Differential studies of inclusive J/psi and psi (2S) production at forward rapidity in Pb-Pb collisions at root s(NN)= 2.76 TeV

J. Adam; D. Adamova; MM. Aggarwal; G.A. Rinella; Maria Agnello; N. Agrawal; Z. Ahammed; S. U. Ahn; I. Aimo; S. Aiola; Hans Bøggild; Ian Bearden; Christian Holm Christensen; Jens Jørgen Gaardhøje; Hans Hjersing Dalsgaard; Børge Svane Nielsen; Christian Alexander Bourjau; Kristjan Herlache Gulbrandsen; Marek Chojnacki; Valentina Zaccolo; Ante Bilandzic; Alexander Colliander Hansen

doi:10.1007/JHEP05(2016)179

Differential studies of inclusive J/psi and psi (2S) production at forward rapidity in Pb-Pb collisions at root s(NN)= 2.76 TeV

J. Adam, D. Adamova, MM. Aggarwal, G.A. Rinella, Maria Agnello, N. Agrawal, Z. Ahammed, S. U. Ahn, I. Aimo, S. Aiola, Hans Bøggild, Ian Bearden, Christian Holm Christensen, Jens Jørgen Gaardhøje, Hans Hjersing Dalsgaard, Børge Svane Nielsen, Christian Alexander Bourjau, Kristjan Herlache Gulbrandsen, Marek Chojnacki, Valentina ZaccoloAnte Bilandzic, Alexander Colliander Hansen

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Abstract

The production of J/ψ and ψ(2S) was studied with the ALICE detector in Pb-Pb collisions at the LHC. The measurement was performed at forward rapidity (2.5 < y < 4) down to zero transverse momentum (p_t) in the dimuon decay channel. Inclusive J/ψ yields were extracted in different centrality classes and the centrality dependence of the average p_t is presented. The J/ψ suppression, quantified with the nuclear modification factor (R_AA), was measured as a function of centrality, transverse momentum and rapidity. Comparisons with similar measurements at lower collision energy and theoretical models indicate that the J/ψ production is the result of an interplay between color screening and recombination mechanisms in a deconfined partonic medium, or at its hadronization. Results on the ψ(2S) suppression are provided via the ratio of ψ(2S) over J/ψ measured in pp and Pb-Pb collisions.

Originalsprog	Engelsk
Artikelnummer	179
Tidsskrift	Journal of High Energy Physics (Online)
Vol/bind	2016
Udgave nummer	5
ISSN	1126-6708
DOI	https://doi.org/10.1007/JHEP05(2016)179
Status	Udgivet - 1 maj 2016

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10.1007/JHEP05(2016)179Licens: CC BY

art_10.1007_JHEP05(2016)179Forlagets udgivne version, 1,19 MB

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Adam, J., Adamova, D., Aggarwal, MM., Rinella, G. A., Agnello, M., Agrawal, N., Ahammed, Z., U. Ahn, S., Aimo, I., Aiola, S., Bøggild, H., Bearden, I., Christensen, C. H., Gaardhøje, J. J., Dalsgaard, H. H., Nielsen, B. S., Bourjau, C. A., Gulbrandsen, K. H., Chojnacki, M., ... Hansen, A. C. (2016). Differential studies of inclusive J/psi and psi (2S) production at forward rapidity in Pb-Pb collisions at root s(NN)= 2.76 TeV. Journal of High Energy Physics (Online), 2016(5), [179]. https://doi.org/10.1007/JHEP05(2016)179

Adam, J, Adamova, D, Aggarwal, MM, Rinella, GA, Agnello, M, Agrawal, N, Ahammed, Z, U. Ahn, S, Aimo, I, Aiola, S, Bøggild, H , Bearden, I , Christensen, CH , Gaardhøje, JJ, Dalsgaard, HH, Nielsen, BS, Bourjau, CA, Gulbrandsen, KH, Chojnacki, M, Zaccolo, V, Bilandzic, A & Hansen, AC 2016, 'Differential studies of inclusive J/psi and psi (2S) production at forward rapidity in Pb-Pb collisions at root s(NN)= 2.76 TeV', Journal of High Energy Physics (Online), bind 2016, nr. 5, 179. https://doi.org/10.1007/JHEP05(2016)179

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title = "Differential studies of inclusive J/psi and psi (2S) production at forward rapidity in Pb-Pb collisions at root s(NN)= 2.76 TeV",

abstract = "The production of J/ψ and ψ(2S) was studied with the ALICE detector in Pb-Pb collisions at the LHC. The measurement was performed at forward rapidity (2.5 < y < 4) down to zero transverse momentum (pt) in the dimuon decay channel. Inclusive J/ψ yields were extracted in different centrality classes and the centrality dependence of the average pt is presented. The J/ψ suppression, quantified with the nuclear modification factor (RAA), was measured as a function of centrality, transverse momentum and rapidity. Comparisons with similar measurements at lower collision energy and theoretical models indicate that the J/ψ production is the result of an interplay between color screening and recombination mechanisms in a deconfined partonic medium, or at its hadronization. Results on the ψ(2S) suppression are provided via the ratio of ψ(2S) over J/ψ measured in pp and Pb-Pb collisions.",

author = "J. Adam and D. Adamova and MM. Aggarwal and G.A. Rinella and Maria Agnello and N. Agrawal and Z. Ahammed and {U. Ahn}, S. and I. Aimo and S. Aiola and Hans B{\o}ggild and Ian Bearden and Christensen, {Christian Holm} and Gaardh{\o}je, {Jens J{\o}rgen} and Dalsgaard, {Hans Hjersing} and Nielsen, {B{\o}rge Svane} and Bourjau, {Christian Alexander} and Gulbrandsen, {Kristjan Herlache} and Marek Chojnacki and Valentina Zaccolo and Ante Bilandzic and Hansen, {Alexander Colliander}",

year = "2016",

month = may,

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doi = "10.1007/JHEP05(2016)179",

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T1 - Differential studies of inclusive J/psi and psi (2S) production at forward rapidity in Pb-Pb collisions at root s(NN)= 2.76 TeV

AU - Adam, J.

AU - Adamova, D.

AU - Aggarwal, MM.

AU - Rinella, G.A.

AU - Agnello, Maria

AU - Agrawal, N.

AU - Ahammed, Z.

AU - U. Ahn, S.

AU - Aimo, I.

AU - Aiola, S.

AU - Bøggild, Hans

AU - Bearden, Ian

AU - Christensen, Christian Holm

AU - Gaardhøje, Jens Jørgen

AU - Dalsgaard, Hans Hjersing

AU - Nielsen, Børge Svane

AU - Bourjau, Christian Alexander

AU - Gulbrandsen, Kristjan Herlache

AU - Chojnacki, Marek

AU - Zaccolo, Valentina

AU - Bilandzic, Ante

AU - Hansen, Alexander Colliander

PY - 2016/5/1

Y1 - 2016/5/1

N2 - The production of J/ψ and ψ(2S) was studied with the ALICE detector in Pb-Pb collisions at the LHC. The measurement was performed at forward rapidity (2.5 < y < 4) down to zero transverse momentum (pt) in the dimuon decay channel. Inclusive J/ψ yields were extracted in different centrality classes and the centrality dependence of the average pt is presented. The J/ψ suppression, quantified with the nuclear modification factor (RAA), was measured as a function of centrality, transverse momentum and rapidity. Comparisons with similar measurements at lower collision energy and theoretical models indicate that the J/ψ production is the result of an interplay between color screening and recombination mechanisms in a deconfined partonic medium, or at its hadronization. Results on the ψ(2S) suppression are provided via the ratio of ψ(2S) over J/ψ measured in pp and Pb-Pb collisions.

AB - The production of J/ψ and ψ(2S) was studied with the ALICE detector in Pb-Pb collisions at the LHC. The measurement was performed at forward rapidity (2.5 < y < 4) down to zero transverse momentum (pt) in the dimuon decay channel. Inclusive J/ψ yields were extracted in different centrality classes and the centrality dependence of the average pt is presented. The J/ψ suppression, quantified with the nuclear modification factor (RAA), was measured as a function of centrality, transverse momentum and rapidity. Comparisons with similar measurements at lower collision energy and theoretical models indicate that the J/ψ production is the result of an interplay between color screening and recombination mechanisms in a deconfined partonic medium, or at its hadronization. Results on the ψ(2S) suppression are provided via the ratio of ψ(2S) over J/ψ measured in pp and Pb-Pb collisions.

U2 - 10.1007/JHEP05(2016)179

DO - 10.1007/JHEP05(2016)179

M3 - Journal article

SN - 1126-6708

VL - 2016

JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

IS - 5

M1 - 179

ER -

Differential studies of inclusive J/psi and psi (2S) production at forward rapidity in Pb-Pb collisions at root s(NN)= 2.76 TeV

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