{"facets":[{"max_values":5,"printable_name":"Subject_areas","type":"subject_areas","vals":[{"doc_count":1,"key":"hep-ex","url_params":{"subject_areas":"hep-ex"}},{"doc_count":1,"key":"nucl-ex","url_params":{"subject_areas":"nucl-ex"}}]},{"max_values":5,"printable_name":"Observables","type":"observables","vals":[{"doc_count":1,"key":"CORR/DPHI","url_params":{"observables":"CORR/DPHI"}},{"doc_count":1,"key":"V2","url_params":{"observables":"V2"}},{"doc_count":1,"key":"V3","url_params":{"observables":"V3"}},{"doc_count":1,"key":"V4","url_params":{"observables":"V4"}}]},{"max_values":5,"printable_name":"Collaboration","type":"collaboration","vals":[{"doc_count":1,"key":"ALICE","url_params":{"collaboration":"ALICE"}}]},{"max_values":10,"printable_name":"Authors","type":"author","vals":[{"doc_count":1,"key":"Adam, Jaroslav","url_params":{"author":"Adam, Jaroslav"}},{"doc_count":1,"key":"Adamova, Dagmar","url_params":{"author":"Adamova, Dagmar"}},{"doc_count":1,"key":"Aggarwal, Madan Mohan","url_params":{"author":"Aggarwal, Madan Mohan"}},{"doc_count":1,"key":"Aglieri Rinella, Gianluca","url_params":{"author":"Aglieri Rinella, Gianluca"}},{"doc_count":1,"key":"Agnello, Michelangelo","url_params":{"author":"Agnello, Michelangelo"}},{"doc_count":1,"key":"Agrawal, Neelima","url_params":{"author":"Agrawal, Neelima"}},{"doc_count":1,"key":"Ahammed, Zubayer","url_params":{"author":"Ahammed, Zubayer"}},{"doc_count":1,"key":"Ahmad, Shakeel","url_params":{"author":"Ahmad, Shakeel"}},{"doc_count":1,"key":"Ahn, Sang Un","url_params":{"author":"Ahn, Sang Un"}},{"doc_count":1,"key":"Aiola, Salvatore","url_params":{"author":"Aiola, Salvatore"}},{"doc_count":1,"key":"Akindinov, Alexander","url_params":{"author":"Akindinov, Alexander"}},{"doc_count":1,"key":"Alam, Sk Noor","url_params":{"author":"Alam, Sk Noor"}},{"doc_count":1,"key":"Alarcon Do Passo Suaide, Alexandre","url_params":{"author":"Alarcon Do Passo Suaide, Alexandre"}},{"doc_count":1,"key":"Aleksandrov, Dmitry","url_params":{"author":"Aleksandrov, Dmitry"}},{"doc_count":1,"key":"Alessandro, Bruno","url_params":{"author":"Alessandro, Bruno"}},{"doc_count":1,"key":"Alexandre, Didier","url_params":{"author":"Alexandre, Didier"}},{"doc_count":1,"key":"Alfaro Molina, Jose Ruben","url_params":{"author":"Alfaro Molina, Jose Ruben"}},{"doc_count":1,"key":"Alici, Andrea","url_params":{"author":"Alici, Andrea"}},{"doc_count":1,"key":"Alkin, Anton","url_params":{"author":"Alkin, Anton"}},{"doc_count":1,"key":"Alme, Johan","url_params":{"author":"Alme, Johan"}}]},{"max_values":5,"printable_name":"Date","type":"date","vals":[{"doc_count":1,"key":2017,"key_as_string":"2017-01-01T00:00:00.000Z","url_params":{"date":2017}}]},{"max_values":5,"printable_name":"Reactions","type":"reactions","vals":[{"doc_count":1,"key":"Pb Pb --> X","url_params":{"reactions":"Pb Pb --> X"}}]},{"max_values":5,"printable_name":"CM Energies (GeV)","type":"cmenergies","vals":[{"doc_count":null,"key":"2.0 \u2264 \u221as < 3.0","url_params":{"cmenergies":"2.0,3.0"}}]}],"hits":{"total":1},"results":[{"abstract":"We present the first measurement of the two-particle transverse momentum differential correlation function, $P_2\\equiv\\langle \\Delta p_{\\rm T} \\Delta p_{\\rm T} \\rangle /\\langle p_{\\rm T} \\rangle^2$, in Pb-Pb collisions at $\\sqrt{s_{_{\\rm NN}}} =$ 2.76 TeV. Results for $P_2$ are reported as a function of relative pseudorapidity ($\\Delta \\eta$) and azimuthal angle ($\\Delta \\varphi$) between two particles for different collision centralities. The $\\Delta \\phi$ dependence is found to be largely independent of $\\Delta \\eta$ for $|\\Delta \\eta| \\geq$ 0.9. In 5% most central Pb-Pb collisions, the two-particle transverse momentum correlation function exhibits a clear double-hump structure around $\\Delta \\varphi = \\pi$ (i.e., on the away side), which is not observed in number correlations in the same centrality range, and thus provides an indication of the dominance of triangular flow in this collision centrality. Fourier decompositions of $P_2$, studied as a function of collision centrality, show that correlations at $|\\Delta \\eta| \\geq$ 0.9 can be well reproduced by a flow ansatz based on the notion that measured momentum correlations are strictly determined by the collective motion of the system.","access_urls":{"links":{"csv":"https://www.hepdata.net/download/submission/ins1512772/1/csv","json":"https://www.hepdata.net/download/submission/ins1512772/1/json","root":"https://www.hepdata.net/download/submission/ins1512772/1/root","yaml":"https://www.hepdata.net/download/submission/ins1512772/1/yaml","yoda":"https://www.hepdata.net/download/submission/ins1512772/1/yoda"}},"analyses":[],"arxiv_id":"arXiv:1702.02665","authors":["Adam, Jaroslav","Adamova, Dagmar","Aggarwal, Madan Mohan","Aglieri Rinella, Gianluca","Agnello, Michelangelo","Agrawal, Neelima","Ahammed, Zubayer","Ahmad, Shakeel","Ahn, Sang Un","Aiola, Salvatore"],"collaborations":["ALICE"],"control_number":"78231","creation_date":"2017-02-08","data":[],"data_abstract":"CERN-LHC.  ALICE Measurement of charged particles differential transverse momentum correlation function, $\\Delta p_{\\rm T}\\Delta p_{\\rm T}$, in Pb-Pb collisions at $\\sqrt{s_{NN}}= 2.76$ TeV. The correlations are reported as a function of the relative pseudorapidity and azimuthal angle difference, $\\Delta\\varphi$. The $\\Delta\\varphi$ dependence is found to be largely independent of $\\Delta\\eta$ at $\\Delta\\eta > 0.9$. $\\Delta p_{\\rm T}\\Delta p_{\\rm T}$ exhibits a strong dependence on collision centrality that is qualitatively similar to that of number correlations, R2, previously reported. In 0-5% most central Pb--Pb collisions the two particle transverse momentum correlation function exhibits a cleartwo hump structure at the 'away-side', an indication of the dominance of triangular flow. Detailed comparison of R2 and $\\Delta p_{\\rm T}\\Delta p_{\\rm T}$ correlation functions utilizing Fourier decomposition show that the $\\Delta p_{\\rm T}\\Delta p_{\\rm T}$ correlations at $\\Delta\\eta > 0.9$ can be well reproduced by the flow ansatz, assuming that all the correlations are dominated by the anisotropic flow.","data_keywords":{"cmenergies":[{"gte":2.76,"lte":2.76}],"observables":["V3","V2","V4","CORR/DPHI"],"reactions":["Pb Pb --> X"]},"date":"08 Feb 2017","doc_type":"publication","doi":"10.1103/PhysRevLett.118.162302","first_author":{"affiliation":"Prague, Tech. U.","full_name":"Adam, Jaroslav"},"hepdata_doi":"10.17182/hepdata.78231","id":78231,"inspire_id":"1512772","journal_info":"Phys.Rev.Lett. 118 (2017) 162302","keywords":[{"schema":"INSPIRE","value":"transverse momentum: correlation"},{"schema":"INSPIRE","value":"correlation function: transverse momentum"},{"schema":"INSPIRE","value":"transverse momentum: factorization"},{"schema":"INSPIRE","value":"momentum: correlation"},{"schema":"INSPIRE","value":"two-particle"},{"schema":"INSPIRE","value":"heavy ion: scattering"},{"schema":"INSPIRE","value":"lead"},{"schema":"INSPIRE","value":"flow"},{"schema":"INSPIRE","value":"Bethe ansatz"},{"schema":"INSPIRE","value":"CERN LHC Coll"},{"schema":"INSPIRE","value":"triangulation"},{"schema":"INSPIRE","value":"collective"},{"schema":"INSPIRE","value":"structure"},{"schema":"INSPIRE","value":"rapidity"},{"schema":"INSPIRE","value":"deconfinement"},{"schema":"INSPIRE","value":"pile-up"},{"schema":"INSPIRE","value":"Hanbury-Brown-Twiss effect"},{"schema":"INSPIRE","value":"ALICE"},{"schema":"INSPIRE","value":"experimental results"},{"schema":"INSPIRE","value":"numerical calculations"},{"schema":"INSPIRE","value":"statistical analysis"},{"schema":"INSPIRE","value":"2760 GeV-cms"}],"last_updated":"2017-07-03T12:31:55","parent_child_join":{"name":"parent_publication"},"publication_date":"2017-05-07T00:00:00","recid":78231,"resources":[{"description":"web page with auxiliary material","type":"html","url":"https://aliceinfo.cern.ch/ArtSubmission/node/3420"}],"subject_area":["hep-ex","nucl-ex"],"summary_authors":[{"affiliation":"Prague, Tech. U.","full_name":"Adam, Jaroslav"},{"affiliation":"Rez, Nucl. Phys. Inst.","full_name":"Adamova, Dagmar"},{"affiliation":"Panjab U.","full_name":"Aggarwal, Madan Mohan"},{"affiliation":"CERN","full_name":"Aglieri Rinella, Gianluca"},{"affiliation":"Turin Polytechnic","full_name":"Agnello, Michelangelo"},{"affiliation":"Indian Inst. Tech., Mumbai","full_name":"Agrawal, Neelima"},{"affiliation":"Calcutta, VECC","full_name":"Ahammed, Zubayer"},{"affiliation":"Aligarh Muslim U.","full_name":"Ahmad, Shakeel"},{"affiliation":"KISTI, Daejeon","full_name":"Ahn, Sang Un"},{"affiliation":"Yale U.","full_name":"Aiola, Salvatore"}],"title":"Flow dominance and factorization of transverse momentum correlations in Pb-Pb collisions at the LHC","total_tables":0,"type":["article"],"uuid":"345481e6-62db-466a-acd3-adbd7f7744b0","version":1,"year":"2017"}],"total":1}