phi-Meson production at forward rapidity in p-Pb collisions at root s(NN)=5.02 TeV and in pp collisions at root s=2.76 TeV

J. Adam; D. Adamova; M.M. Aggarwal; G.A. Rinella; Maria Agnello; N. Agrawal; Z. Ahammed; S. U. Ahn; I. Aimo; S. Aiola; M. Ajaz; A. Akindinov; SN Alam; D. Aleksandrov; B. Alessandro; Ian Bearden; Christian Holm Christensen; Kristjan Herlache Gulbrandsen; Jens Jørgen Gaardhøje; Børge Svane Nielsen; Ante Bilandzic; Marek Chojnacki; Valentina Zaccolo; You Zhou; Christian Alexander Bourjau; Katarina Gajdosova; Hans Bøggild; Hans Hjersing Dalsgaard; Lais Ozelin de Lima Pimentel; Vojtech Pacik

doi:10.1016/j.physletb.2017.01.074

phi-Meson production at forward rapidity in p-Pb collisions at root s(NN)=5.02 TeV and in pp collisions at root s=2.76 TeV

J. Adam, D. Adamova, M.M. Aggarwal, G.A. Rinella, Maria Agnello, N. Agrawal, Z. Ahammed, S. U. Ahn, I. Aimo, S. Aiola, M. Ajaz, A. Akindinov, SN Alam, D. Aleksandrov, B. Alessandro, Ian Bearden, Christian Holm Christensen, Kristjan Herlache Gulbrandsen, Jens Jørgen Gaardhøje, Børge Svane NielsenAnte Bilandzic, Marek Chojnacki, Valentina Zaccolo, You Zhou, Christian Alexander Bourjau, Katarina Gajdosova, Hans Bøggild, Hans Hjersing Dalsgaard, Lais Ozelin de Lima Pimentel, Vojtech Pacik

Experimental Particle Physics

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Abstract

The first study of ϕ-meson production in p–Pb collisions at forward and backward rapidity, at a nucleon–nucleon centre-of-mass energy s_NN=5.02 TeV, has been performed with the ALICE apparatus at the LHC. The ϕ-mesons have been identified in the dimuon decay channel in the transverse momentum (p_T) range 1<p_T<7 GeV/c, both in the p-going (2.03<y<3.53) and the Pb-going (−4.46<y<−2.96) directions — where y stands for the rapidity in the nucleon–nucleon centre-of-mass — the integrated luminosity amounting to 5.01±0.19 nb⁻¹ and 5.81±0.20 nb⁻¹, respectively, for the two data samples. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward–backward ratio for ϕ-meson production is measured for 2.96<|y|<3.53, resulting in a ratio ∼0.5 with no significant p_T dependence within the uncertainties. The p_T dependence of the ϕ nuclear modification factor R_pPb exhibits an enhancement up to a factor 1.6 at p_T=3–4 GeV/c in the Pb-going direction. The p_T dependence of the ϕ-meson cross section in pp collisions at s=2.76 TeV, which is used to determine a reference for the p–Pb results, is also presented here for 1<p_T<5 GeV/c and 2.5<y<4, for a 78±3 nb⁻¹ integrated luminosity sample.

Original language	English
Journal	Physics Letters B
Volume	768
Pages (from-to)	203-217
ISSN	0370-2693
DOIs	https://doi.org/10.1016/j.physletb.2017.01.074
Publication status	Published - 10 May 2017

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10.1016/j.physletb.2017.01.074

1-s2.0-S0370269317301156-mainFinal published version, 1.46 MBLicence: CC BY

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Adam, J., Adamova, D., Aggarwal, M. M., Rinella, G. A., Agnello, M., Agrawal, N., Ahammed, Z., U. Ahn, S., Aimo, I., Aiola, S., Ajaz, M., Akindinov, A., Alam, SN., Aleksandrov, D., Alessandro, B., Bearden, I., Christensen, C. H., Gulbrandsen, K. H., Gaardhøje, J. J., ... Pacik, V. (2017). phi-Meson production at forward rapidity in p-Pb collisions at root s(NN)=5.02 TeV and in pp collisions at root s=2.76 TeV. Physics Letters B, 768, 203-217. https://doi.org/10.1016/j.physletb.2017.01.074

Adam, J, Adamova, D, Aggarwal, MM, Rinella, GA, Agnello, M, Agrawal, N, Ahammed, Z, U. Ahn, S, Aimo, I, Aiola, S, Ajaz, M, Akindinov, A, Alam, SN, Aleksandrov, D, Alessandro, B, Bearden, I , Christensen, CH , Gulbrandsen, KH , Gaardhøje, JJ , Nielsen, BS, Bilandzic, A, Chojnacki, M, Zaccolo, V, Zhou, Y, Bourjau, CA, Gajdosova, K, Bøggild, H, Dalsgaard, HH, Pimentel, LODL & Pacik, V 2017, 'phi-Meson production at forward rapidity in p-Pb collisions at root s(NN)=5.02 TeV and in pp collisions at root s=2.76 TeV', Physics Letters B, vol. 768, pp. 203-217. https://doi.org/10.1016/j.physletb.2017.01.074

@article{2ff5739f931e4dfe85ba6fc58e2446ac,

title = "phi-Meson production at forward rapidity in p-Pb collisions at root s(NN)=5.02 TeV and in pp collisions at root s=2.76 TeV",

abstract = "The first study of ϕ-meson production in p–Pb collisions at forward and backward rapidity, at a nucleon–nucleon centre-of-mass energy sNN=5.02 TeV, has been performed with the ALICE apparatus at the LHC. The ϕ-mesons have been identified in the dimuon decay channel in the transverse momentum (pT) range 1T<7 GeV/c, both in the p-going (2.03−1 and 5.81±0.20 nb−1, respectively, for the two data samples. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward–backward ratio for ϕ-meson production is measured for 2.96<|y|<3.53, resulting in a ratio ∼0.5 with no significant pT dependence within the uncertainties. The pT dependence of the ϕ nuclear modification factor RpPb exhibits an enhancement up to a factor 1.6 at pT=3–4 GeV/c in the Pb-going direction. The pT dependence of the ϕ-meson cross section in pp collisions at s=2.76 TeV, which is used to determine a reference for the p–Pb results, is also presented here for 1T<5 GeV/c and 2.5−1 integrated luminosity sample.",

author = "J. Adam and D. Adamova and M.M. 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 M. Ajaz and A. Akindinov and SN Alam and D. Aleksandrov and B. Alessandro and Ian Bearden and Christensen, {Christian Holm} and Gulbrandsen, {Kristjan Herlache} and Gaardh{\o}je, {Jens J{\o}rgen} and Nielsen, {B{\o}rge Svane} and Ante Bilandzic and Marek Chojnacki and Valentina Zaccolo and You Zhou and Bourjau, {Christian Alexander} and Katarina Gajdosova and Hans B{\o}ggild and Dalsgaard, {Hans Hjersing} and Pimentel, {Lais Ozelin de Lima} and Vojtech Pacik",

year = "2017",

month = may,

day = "10",

doi = "10.1016/j.physletb.2017.01.074",

language = "English",

volume = "768",

pages = "203--217",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

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TY - JOUR

T1 - phi-Meson production at forward rapidity in p-Pb collisions at root s(NN)=5.02 TeV and in pp collisions at root s=2.76 TeV

AU - Adam, J.

AU - Adamova, D.

AU - Aggarwal, M.M.

AU - Rinella, G.A.

AU - Agnello, Maria

AU - Agrawal, N.

AU - Ahammed, Z.

AU - U. Ahn, S.

AU - Aimo, I.

AU - Aiola, S.

AU - Ajaz, M.

AU - Akindinov, A.

AU - Alam, SN

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Bearden, Ian

AU - Christensen, Christian Holm

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Nielsen, Børge Svane

AU - Bilandzic, Ante

AU - Chojnacki, Marek

AU - Zaccolo, Valentina

AU - Zhou, You

AU - Bourjau, Christian Alexander

AU - Gajdosova, Katarina

AU - Bøggild, Hans

AU - Dalsgaard, Hans Hjersing

AU - Pimentel, Lais Ozelin de Lima

AU - Pacik, Vojtech

PY - 2017/5/10

Y1 - 2017/5/10

N2 - The first study of ϕ-meson production in p–Pb collisions at forward and backward rapidity, at a nucleon–nucleon centre-of-mass energy sNN=5.02 TeV, has been performed with the ALICE apparatus at the LHC. The ϕ-mesons have been identified in the dimuon decay channel in the transverse momentum (pT) range 1T<7 GeV/c, both in the p-going (2.03−1 and 5.81±0.20 nb−1, respectively, for the two data samples. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward–backward ratio for ϕ-meson production is measured for 2.96<|y|<3.53, resulting in a ratio ∼0.5 with no significant pT dependence within the uncertainties. The pT dependence of the ϕ nuclear modification factor RpPb exhibits an enhancement up to a factor 1.6 at pT=3–4 GeV/c in the Pb-going direction. The pT dependence of the ϕ-meson cross section in pp collisions at s=2.76 TeV, which is used to determine a reference for the p–Pb results, is also presented here for 1T<5 GeV/c and 2.5−1 integrated luminosity sample.

AB - The first study of ϕ-meson production in p–Pb collisions at forward and backward rapidity, at a nucleon–nucleon centre-of-mass energy sNN=5.02 TeV, has been performed with the ALICE apparatus at the LHC. The ϕ-mesons have been identified in the dimuon decay channel in the transverse momentum (pT) range 1T<7 GeV/c, both in the p-going (2.03−1 and 5.81±0.20 nb−1, respectively, for the two data samples. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward–backward ratio for ϕ-meson production is measured for 2.96<|y|<3.53, resulting in a ratio ∼0.5 with no significant pT dependence within the uncertainties. The pT dependence of the ϕ nuclear modification factor RpPb exhibits an enhancement up to a factor 1.6 at pT=3–4 GeV/c in the Pb-going direction. The pT dependence of the ϕ-meson cross section in pp collisions at s=2.76 TeV, which is used to determine a reference for the p–Pb results, is also presented here for 1T<5 GeV/c and 2.5−1 integrated luminosity sample.

U2 - 10.1016/j.physletb.2017.01.074

DO - 10.1016/j.physletb.2017.01.074

M3 - Journal article

SN - 0370-2693

VL - 768

SP - 203

EP - 217

JO - Physics Letters B

JF - Physics Letters B

ER -

phi-Meson production at forward rapidity in p-Pb collisions at root s(NN)=5.02 TeV and in pp collisions at root s=2.76 TeV

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