Two-pion femtoscopy in p-Pb collisions at root(NN)-N-S=5.02 TeV

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

doi:10.1103/PhysRevC.91.034906

Two-pion femtoscopy in p-Pb collisions at root(NN)-N-S=5.02 TeV

J. Adam, D. Adamova, M.M. Aggarwal, G. Aglieri Rinella, Maria Agnello, N. Agrawal, Z. Ahammed, Irfan Ahmed, S. U. Ahn, I. Aimo, Ian Bearden, Hans Bøggild, Christian Holm Christensen, Kristjan Herlache Gulbrandsen, Jens Jørgen Gaardhøje, Børge Svane Nielsen, Alexander Colliander Hansen, Ante Bilandzic, Marek Chojnacki, Valentina Zaccolo

Experimental Particle Physics

45 Citations (Scopus)

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Abstract

We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at sNN=5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10%-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation.

Original language	English
Article number	034906
Journal	Physical Review C (Nuclear Physics)
Volume	91
Issue number	3
ISSN	0556-2813
DOIs	https://doi.org/10.1103/PhysRevC.91.034906
Publication status	Published - 24 Mar 2015

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Adam, J., Adamova, D., Aggarwal, M. M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahmed, I., U. Ahn, S., Aimo, I., Bearden, I., Bøggild, H., Christensen, C. H., Gulbrandsen, K. H., Gaardhøje, J. J., Nielsen, B. S., Hansen, A. C., Bilandzic, A., Chojnacki, M., & Zaccolo, V. (2015). Two-pion femtoscopy in p-Pb collisions at root(NN)-N-S=5.02 TeV. Physical Review C (Nuclear Physics), 91(3), [034906]. https://doi.org/10.1103/PhysRevC.91.034906

Adam, J, Adamova, D, Aggarwal, MM, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmed, I, U. Ahn, S, Aimo, I, Bearden, I , Bøggild, H , Christensen, CH , Gulbrandsen, KH , Gaardhøje, JJ , Nielsen, BS, Hansen, AC, Bilandzic, A, Chojnacki, M & Zaccolo, V 2015, 'Two-pion femtoscopy in p-Pb collisions at root(NN)-N-S=5.02 TeV', Physical Review C (Nuclear Physics), vol. 91, no. 3, 034906. https://doi.org/10.1103/PhysRevC.91.034906

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title = "Two-pion femtoscopy in p-Pb collisions at root(NN)-N-S=5.02 TeV",

abstract = "We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at sNN=5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10%-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation.",

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T1 - Two-pion femtoscopy in p-Pb collisions at root(NN)-N-S=5.02 TeV

AU - Adam, J.

AU - Adamova, D.

AU - Aggarwal, M.M.

AU - Aglieri Rinella, G.

AU - Agnello, Maria

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmed, Irfan

AU - U. Ahn, S.

AU - Aimo, I.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Christensen, Christian Holm

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Nielsen, Børge Svane

AU - Hansen, Alexander Colliander

AU - Bilandzic, Ante

AU - Chojnacki, Marek

AU - Zaccolo, Valentina

PY - 2015/3/24

Y1 - 2015/3/24

N2 - We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at sNN=5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10%-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation.

AB - We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at sNN=5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10%-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation.

U2 - 10.1103/PhysRevC.91.034906

DO - 10.1103/PhysRevC.91.034906

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VL - 91

JO - Physical Review C

JF - Physical Review C

IS - 3

M1 - 034906

ER -

Two-pion femtoscopy in p-Pb collisions at root(NN)-N-S=5.02 TeV

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