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Transverse momentum spectra and nuclear modification factors of charged particles in pp, p-Pb and Pb-Pb collisions at the LHC

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Journal , Other literature type 01 Nov 2018Embargo end date: 01 Jan 2018 Italy, Greece, France, Italy, Italy, Italy, Germany, Norway, Germany, Italy, Denmark, Norway Publisher:Springer Science and Business Media LLCJournal:Journal of High Energy Physics, volume 2,018 (eissn: 1029-8479,

Authors: The ALICE collaboration; S. Acharya; F. T.-. Acosta; D. Adamová; J. Adolfsson; M. M. Aggarwal; G. Aglieri Rinella; +193 Authors

The ALICE collaboration; S. Acharya; F. T.-. Acosta; D. Adamová; J. Adolfsson; M. M. Aggarwal; G. Aglieri Rinella; M. Agnello; N. Agrawal; Z. Ahammed; S. U. Ahn; S. Aiola; A. Akindinov; M. Al-Turany; S. N. Alam; D. S. D. Albuquerque; D. Aleksandrov; B. Alessandro; R. Alfaro Molina; Y. Ali; A. Alici; A. Alkin; J. Alme; T. Alt; L. Altenkamper; I. Altsybeev; C. Andrei; D. Andreou; H. A. Andrews; A. Andronic; M. Angeletti; V. Anguelov; C. Anson; T. Antičić; F. Antinori; P. Antonioli; N. Apadula; L. Aphecetche; H. Appelshäuser; S. Arcelli; R. Arnaldi; O. W. Arnold; I. C. Arsene; M. Arslandok; B. Audurier; A. Augustinus; R. Averbeck; M. D. Azmi; A. Badalà; Y. W. Baek; S. Bagnasco; R. Bailhache; R. Bala; A. Baldisseri; M. Ball; R. C. Baral; A. M. Barbano; R. Barbera; F. Barile; L. Barioglio; G. G. Barnaföldi; L. S. Barnby; V. Barret; P. Bartalini; K. Barth; E. Bartsch; N. Bastid; S. Basu; G. Batigne; B. Batyunya; P. C. Batzing; J. L. Bazo Alba; I. G. Bearden; H. Beck; C. Bedda; N. K. Behera; I. Belikov; F. Bellini; H. Bello Martinez; R. Bellwied; L. G. E. Beltran; V. Belyaev; G. Bencedi; S. Beole; A. Bercuci; Y. Berdnikov; D. Berenyi; R. A. Bertens; D. Berzano; L. Betev; P. P. Bhaduri; A. Bhasin; I. R. Bhat; B. Bhattacharjee; J. Bhom; A. Bianchi; L. Bianchi; N. Bianchi; J. Bielčík; J. Bielčíková; A. Bilandzic; G. Biro; R. Biswas; S. Biswas; J. T. Blair; D. Blau; C. Blume; G. Boca; F. Bock; A. Bogdanov; L. Boldizsár; M. Bombara; G. Bonomi; M. Bonora; H. Borel; A. Borissov; M. Borri; E. Botta; C. Bourjau; L. Bratrud; P. Braun-Munzinger; M. Bregant; T. A. Broker; M. Broz; E. J. Brucken; E. Bruna; G. E. Bruno; D. Budnikov; H. Buesching; S. Bufalino; P. Buhler; P. Buncic; O. Busch; Z. Buthelezi; J. B. Butt; J. T. Buxton; J. Cabala; D. Caffarri; H. Caines; A. Caliva; E. Calvo Villar; R. S. Camacho; P. Camerini; A. A. Capon; F. Carena; W. Carena; F. Carnesecchi; J. Castillo Castellanos; A. J. Castro; E. A. R. Casula; C. Ceballos Sanchez; S. Chandra; B. Chang; W. Chang; S. Chapeland; M. Chartier; S. Chattopadhyay; S. Chattopadhyay; A. Chauvin; C. Cheshkov; B. Cheynis; V. Chibante Barroso; D. D. Chinellato; S. Cho; P. Chochula; S. Choudhury; T. Chowdhury; P. Christakoglou; C. H. Christensen; P. Christiansen; T. Chujo; S. U. Chung; C. Cicalo; L. Cifarelli; F. Cindolo; J. Cleymans; F. Colamaria; D. Colella; A. Collu; M. Colocci; M. Concas; G. Conesa Balbastre; Z. Conesa del Valle; J. G. Contreras; T. M. Cormier; Y. Corrales Morales; I. Cortés Maldonado; P. Cortese; M. R. Cosentino; F. Costa; S. Costanza; J. Crkovská; P. Crochet; E. Cuautle; L. Cunqueiro; T. Dahms; A. Dainese; M. C. Danisch; A. Danu; D. Das;

doi: 10.1007/jhep11(2018)013 , 10.15120/gsi-2019-00425 , 10.48550/arxiv.1802.09145

arXiv: 1802.09145

handle: 11369/426811 , 11579/102500 , 1956/19367 , 11571/1275048 , 10900/89564 , 10852/67971 , 11586/224492

Transverse momentum spectra and nuclear modification factors of charged particles in pp, p-Pb and Pb-Pb collisions at the LHC

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Abstract

Abstract We report the measured transverse momentum (p T) spectra of primary charged particles from pp, p-Pb and Pb-Pb collisions at a center-of-mass energy $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ s N N = 5.02 TeV in the kinematic range of 0.15 < p T < 50 GeV/c and |η| < 0.8. A significant improvement of systematic uncertainties motivated the reanalysis of data in pp and Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=2.76 $$ s N N = 2.76 TeV, as well as in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ s N N = 5.02 TeV, which is also presented. Spectra from Pb-Pb collisions are presented in nine centrality intervals and are compared to a reference spectrum from pp collisions scaled by the number of binary nucleon-nucleon collisions. For central collisions, the p T spectra are suppressed by more than a factor of 7 around 6–7 GeV/c with a significant reduction in suppression towards higher momenta up to 30 GeV/c. The nuclear modification factor R pPb, constructed from the pp and p-Pb spectra measured at the same collision energy, is consistent with unity above 8 GeV/c. While the spectra in both pp and Pb-Pb collisions are substantially harder at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ s N N = 5.02 TeV compared to 2.76 TeV, the nuclear modification factors show no significant collision energy dependence. The obtained results should provide further constraints on the parton energy loss calculations to determine the transport properties of the hot and dense QCD matter.

Countries

Italy, Greece, France, Italy, Italy, Italy, Germany, Norway, Germany, Italy, Denmark, Norway

Related Organizations

Korean Association Of Science and Technology Studies
Korea (Republic of)
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
France
Panjab University
India
Yale University
United States
Goethe University Frankfurt
Germany

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Keywords

heavy ion: scattering, momentum [up], binary, momentum spectrum [transverse momentum], QC770-798, hiukkasfysiikka, nucl-ex, 2760 GeV-cms/nucleon, heavy ion experiments, High Energy Physics - Experiment, transverse momentum: momentum spectrum, High Energy Physics - Experiment (hep-ex), nucleon nucleon, Heavy-ion collision, high [momentum], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], scattering [p p], transport theory, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), impact parameter, Nuclear Experiment, ddc:530, VDP::Kjerne- og elementærpartikkelfysikk: 431, suppression, charged particle, 520, :Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP], CERN LHC Coll, kinematics, Heavy Ion Experiment, Particle Physics - Experiment, heavy-ion collision, Nuclear and High Energy Physics, p p: scattering, nucleon nucleon: scattering, energy loss [parton], VDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 530, energy dependence, Heavy Ion Experiments, scattering [heavy ion], [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear and particle physics. Atomic energy. Radioactivity, matter [quantum chromodynamics], Nuclear Physics - Experiment, 5020 GeV-cms/nucleon, up: momentum, p nucleus: scattering, quantum chromodynamics: matter, VDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431, ta114, hep-ex, nucleus, :Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP], scattering [p nucleus], scattering [nucleon nucleon], 541, * Automatic Keywords *, momentum: high, parton: energy loss, experimental results

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