Pion femtoscopy measurements in ALICE at the LHC
We present the results of two-pion Bose-Einstein correlations measured in Pb–Pb collisions at a center-of-mass energy √sNN = 2:76 TeV recorded by ALICE at the Large Hadron Collider. These types of correlations allow to extract, using the technique of femtoscopy (also known as Hanburry-Brown Twiss in...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2014-04-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20147100051 |
| _version_ | 1818778714843906048 |
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| author | Kamil Graczykowski Łukasz |
| author_facet | Kamil Graczykowski Łukasz |
| author_sort | Kamil Graczykowski Łukasz |
| collection | DOAJ |
| description | We present the results of two-pion Bose-Einstein correlations measured in Pb–Pb collisions at a center-of-mass energy √sNN = 2:76 TeV recorded by ALICE at the Large Hadron Collider. These types of correlations allow to extract, using the technique of femtoscopy (also known as Hanburry-Brown Twiss interferometry, or shortly HBT), the space-time characteristics of the source from the correlation calculated as a function of the pair momentum difference. The femtoscopic analysis was performed using both the Spherical Harmonics decomposition and the standard 3D Cartesian representation of the correlation function. The source sizes in three dimensions, the HBT radii, were extracted by fitting the experimental correlation functions. The resulting dependencies of the radii as a function of centrality and pair transverse momentum are shown. The results indicate the existence of a flowing medium and provide constraints on existing dynamical models. The ALICE Pb–Pb HBT radii are also compared to the pp analysis and other heavy-ion experiments in order to test the multiplicity scaling between different systems. |
| first_indexed | 2024-12-18T11:49:07Z |
| format | Article |
| id | doaj.art-ed370b9b8fd04a469fb0f6bf76876b50 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-18T11:49:07Z |
| publishDate | 2014-04-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-ed370b9b8fd04a469fb0f6bf76876b502022-12-21T21:09:13ZengEDP SciencesEPJ Web of Conferences2100-014X2014-04-01710005110.1051/epjconf/20147100051epjconf_icnfp2013_00051Pion femtoscopy measurements in ALICE at the LHCKamil Graczykowski Łukasz0Faculty of Physics, Warsaw University of TechnologyWe present the results of two-pion Bose-Einstein correlations measured in Pb–Pb collisions at a center-of-mass energy √sNN = 2:76 TeV recorded by ALICE at the Large Hadron Collider. These types of correlations allow to extract, using the technique of femtoscopy (also known as Hanburry-Brown Twiss interferometry, or shortly HBT), the space-time characteristics of the source from the correlation calculated as a function of the pair momentum difference. The femtoscopic analysis was performed using both the Spherical Harmonics decomposition and the standard 3D Cartesian representation of the correlation function. The source sizes in three dimensions, the HBT radii, were extracted by fitting the experimental correlation functions. The resulting dependencies of the radii as a function of centrality and pair transverse momentum are shown. The results indicate the existence of a flowing medium and provide constraints on existing dynamical models. The ALICE Pb–Pb HBT radii are also compared to the pp analysis and other heavy-ion experiments in order to test the multiplicity scaling between different systems.http://dx.doi.org/10.1051/epjconf/20147100051 |
| spellingShingle | Kamil Graczykowski Łukasz Pion femtoscopy measurements in ALICE at the LHC EPJ Web of Conferences |
| title | Pion femtoscopy measurements in ALICE at the LHC |
| title_full | Pion femtoscopy measurements in ALICE at the LHC |
| title_fullStr | Pion femtoscopy measurements in ALICE at the LHC |
| title_full_unstemmed | Pion femtoscopy measurements in ALICE at the LHC |
| title_short | Pion femtoscopy measurements in ALICE at the LHC |
| title_sort | pion femtoscopy measurements in alice at the lhc |
| url | http://dx.doi.org/10.1051/epjconf/20147100051 |
| work_keys_str_mv | AT kamilgraczykowskiłukasz pionfemtoscopymeasurementsinaliceatthelhc |