Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 919974

Principal-component analysis of two-particle azimuthal correlations in PbPb and pPb collisions at CMS


(CMS Collaboration) Sirunyan, Albert; ...; Mesić, Benjamin; Godinović, Nikola; Puljak, Ivica; Starodumov, Andrey; Lelas, Damir; Kovač, Marko; Đurić, Senka; Ferenček, Dinko et al.
Principal-component analysis of two-particle azimuthal correlations in PbPb and pPb collisions at CMS // Physical Review C, 96 (2017), 064902, 21 doi:10.1103/PhysRevC.96.064902 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 919974 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Principal-component analysis of two-particle azimuthal correlations in PbPb and pPb collisions at CMS

Autori
Sirunyan, Albert ; ... ; Mesić, Benjamin ; Godinović, Nikola ; Puljak, Ivica ; Starodumov, Andrey ; Lelas, Damir ; Kovač, Marko ; Đurić, Senka ; Ferenček, Dinko ; Brigljević, Vuko ; Luetić, Jelena ; Antunović, Željko ; Kadija, Krešo ; Šuša, Tatjana ; ... ; Woods, Nate

Kolaboracija
CMS Collaboration

Izvornik
Physical Review C (2469-9993) 96 (2017); 064902, 21

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
High energy physics, Experimental particle physics, LHC, CMS, Standard Model

Sažetak
For the first time a principle-component analysis is used to separate out different orthogonal modes of the two-particle correlation matrix from heavy ion collisions. The analysis uses data from sqrt(s[NN]) = 2.76 TeV PbPb and sqrt(s[NN]) = 5.02 TeV pPb collisions collected by the CMS experiment at the LHC. Two-particle azimuthal correlations have been extensively used to study hydrodynamic flow in heavy ion collisions. Recently it has been shown that the expected factorization of two-particle results into a product of the constituent single-particle anisotropies is broken. The new information provided by these modes may shed light on the breakdown of flow factorization in heavy ion collisions. The first two modes ("leading" and "subleading") of two-particle correlations are presented for elliptical and triangular anisotropies in PbPb and pPb collisions as a function of pt over a wide range of event activity. The leading mode is found to be essentially equivalent to the anisotropy harmonic previously extracted from two-particle correlation methods. The subleading mode represents a new experimental observable and is shown to account for a large fraction of the factorization breaking recently observed at high transverse momentum. The principle-component analysis technique has also been applied to multiplicity fluctuations. These also show a subleading mode. The connection of these new results to previous studies of factorization is discussed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Ustanove
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Split

Citiraj ovu publikaciju

(CMS Collaboration) Sirunyan, Albert; ...; Mesić, Benjamin; Godinović, Nikola; Puljak, Ivica; Starodumov, Andrey; Lelas, Damir; Kovač, Marko; Đurić, Senka; Ferenček, Dinko et al.
Principal-component analysis of two-particle azimuthal correlations in PbPb and pPb collisions at CMS // Physical Review C, 96 (2017), 064902, 21 doi:10.1103/PhysRevC.96.064902 (međunarodna recenzija, članak, znanstveni)
(CMS Collaboration) (CMS Collaboration) Sirunyan, A., ..., Mesić, B., Godinović, N., Puljak, I., Starodumov, A., Lelas, D., Kovač, M., Đurić, S. & Ferenček, D. (2017) Principal-component analysis of two-particle azimuthal correlations in PbPb and pPb collisions at CMS. Physical Review C, 96, 064902, 21 doi:10.1103/PhysRevC.96.064902.
@article{article, year = {2017}, pages = {21}, DOI = {10.1103/PhysRevC.96.064902}, chapter = {064902}, keywords = {High energy physics, Experimental particle physics, LHC, CMS, Standard Model}, journal = {Physical Review C}, doi = {10.1103/PhysRevC.96.064902}, volume = {96}, issn = {2469-9993}, title = {Principal-component analysis of two-particle azimuthal correlations in PbPb and pPb collisions at CMS}, keyword = {High energy physics, Experimental particle physics, LHC, CMS, Standard Model}, chapternumber = {064902} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati