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Measurement of D$_s^+$ production and nuclear modification factor in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV

The production of prompt D$_s^+$ mesons was measured for the first time in collisions of heavy nuclei with the ALICE detector at the LHC. The analysis was performed on a data sample of Pb-Pb collisions at a centre-of-mass energy per nucleon pair, $\sqrt{s_{\rm NN}}$, of 2.76 TeV in two different cen...

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Published in:	The journal of high energy physics 2016, Vol.3
Main Authors:	Adam, J., Aphecetche, Laurent, Baldisseri, A., Batigne, Guillaume, Belikov, I., Borel, H., Castellanos, J. Castillo, Charvet, J.L., Cheshkov, C., Cheynis, B., Ducroux, L., Germain, Marie, Grossiord, J.-Y., Hippolyte, B., Lardeux, A., Maire, A., Martin Blanco, J., Martinez Garcia, Gines, Massacrier, L., Molnar, L., Moreira De Godoy, D.A., Morreale, A., Costa, H. Pereira Da, Pillot, Philippe, Ronflette, L., Schutz, Y., Shabetai, Alexandre, Stocco, Diego, Teyssier, B., Tieulent, R., Uras, A., Vernet, R., Wang, M., Conesa Balbastre, G., Faivre, J., Furget, C., Guernane, R., Silvestre, C., Vauthier, A., Barret, V., Bastid, N., Batista Camejo, A., Crochet, P., Dupieux, P., Feuillard, V.J.G., Li, S., Lopez, X., Manso, F., Porteboeuf-Houssais, S., Rosnet, P., Valencia Palomo, L., Vulpescu, B.
Format:	Article
Language:	English
Subjects:	High Energy Physics - Experiment Nuclear Experiment Physics
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container_title	The journal of high energy physics
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creator	Adam, J. Aphecetche, Laurent Baldisseri, A. Batigne, Guillaume Belikov, I. Borel, H. Castellanos, J. Castillo Charvet, J.L. Cheshkov, C. Cheynis, B. Ducroux, L. Germain, Marie Grossiord, J.-Y. Hippolyte, B. Lardeux, A. Maire, A. Martin Blanco, J. Martinez Garcia, Gines Massacrier, L. Molnar, L. Moreira De Godoy, D.A. Morreale, A. Costa, H. Pereira Da Pillot, Philippe Ronflette, L. Schutz, Y. Shabetai, Alexandre Stocco, Diego Teyssier, B. Tieulent, R. Uras, A. Vernet, R. Wang, M. Conesa Balbastre, G. Faivre, J. Furget, C. Guernane, R. Silvestre, C. Vauthier, A. Barret, V. Bastid, N. Batista Camejo, A. Crochet, P. Dupieux, P. Feuillard, V.J.G. Li, S. Lopez, X. Manso, F. Porteboeuf-Houssais, S. Rosnet, P. Valencia Palomo, L. Vulpescu, B.
description	The production of prompt D$_s^+$ mesons was measured for the first time in collisions of heavy nuclei with the ALICE detector at the LHC. The analysis was performed on a data sample of Pb-Pb collisions at a centre-of-mass energy per nucleon pair, $\sqrt{s_{\rm NN}}$, of 2.76 TeV in two different centrality classes, namely 0-10% and 20-50%. D$_s^+$ mesons and their antiparticles were reconstructed at mid-rapidity from their hadronic decay channel D$_s^+\rightarrow\phi\pi^+$, with $\phi\rightarrow$K$^-$K$^+$, in the transverse momentum intervals $4< p_{\rm T}
doi_str_mv	10.1007/JHEP03(2016)082
format	article
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Castillo ; Charvet, J.L. ; Cheshkov, C. ; Cheynis, B. ; Ducroux, L. ; Germain, Marie ; Grossiord, J.-Y. ; Hippolyte, B. ; Lardeux, A. ; Maire, A. ; Martin Blanco, J. ; Martinez Garcia, Gines ; Massacrier, L. ; Molnar, L. ; Moreira De Godoy, D.A. ; Morreale, A. ; Costa, H. Pereira Da ; Pillot, Philippe ; Ronflette, L. ; Schutz, Y. ; Shabetai, Alexandre ; Stocco, Diego ; Teyssier, B. ; Tieulent, R. ; Uras, A. ; Vernet, R. ; Wang, M. ; Conesa Balbastre, G. ; Faivre, J. ; Furget, C. ; Guernane, R. ; Silvestre, C. ; Vauthier, A. ; Barret, V. ; Bastid, N. ; Batista Camejo, A. ; Crochet, P. ; Dupieux, P. ; Feuillard, V.J.G. ; Li, S. ; Lopez, X. ; Manso, F. ; Porteboeuf-Houssais, S. ; Rosnet, P. ; Valencia Palomo, L. ; Vulpescu, B.</creator><creatorcontrib>Adam, J. ; Aphecetche, Laurent ; Baldisseri, A. ; Batigne, Guillaume ; Belikov, I. ; Borel, H. ; Castellanos, J. 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The analysis was performed on a data sample of Pb-Pb collisions at a centre-of-mass energy per nucleon pair, $\sqrt{s_{\rm NN}}$, of 2.76 TeV in two different centrality classes, namely 0-10% and 20-50%. D$_s^+$ mesons and their antiparticles were reconstructed at mid-rapidity from their hadronic decay channel D$_s^+\rightarrow\phi\pi^+$, with $\phi\rightarrow$K$^-$K$^+$, in the transverse momentum intervals $4< p_{\rm T}<12$ GeV/$c$ and $6< p_{\rm T}<12$ GeV/$c$ for the 0-10% and 20-50% centrality classes, respectively. The nuclear modification factor $R_{\rm AA}$ was computed by comparing the $p_{\rm T}$-differential production yields in Pb-Pb collisions to those in proton-proton (pp) collisions at the same energy. This pp reference was obtained using the cross section measured at $\sqrt{s}= 7$ TeV and scaled to $\sqrt{s}= 2.76$ TeV. The $R_{\rm AA}$ of D$_s^+$ mesons was compared to that of non-strange D mesons in the 10% most central Pb-Pb collisions. At high $p_{\rm T}$ ($8< p_{\rm T}<12$ GeV/$c$) a suppression of the D$_s^+$-meson yield by a factor of about three, compatible within uncertainties with that of non-strange D mesons, is observed. At lower $p_{\rm T}$ ($4< p_{\rm T}<8$ GeV/$c$) the values of the D$_s^+$-meson $R_{\rm AA}$ are larger than those of non-strange D mesons, although compatible within uncertainties. The production ratios D$_s^+$/D$^0$ and D$_s^+$\D$^+$ were also measured in Pb-Pb collisions and compared to their values in proton-proton collisions.]]></description><subject>High Energy Physics - Experiment</subject><subject>Nuclear Experiment</subject><subject>Physics</subject><issn>1029-8479</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNotzE9LwzAcgOEcFJzTs9ccelBG5y9J07QHD2NOp9S5w_A0DGmaYKR_ZtIKMvbdFfX0Hh54EbogMCUA4vpxuVgDu6RA0ivI6BEaEaB5nCUiP0GnIbwDEE5yGKHhyagweNOYtsedxbeRDK-TCO98Vw26d12LVVvhdtC1UR43XeWs0-oXrNJ957Fr8bqM1yXWXV278CMBqx5H2_Dh-32Q-61v8Gp1ONzQqUgjvDEvZ-jYqjqY8_-O0eZusZkv4-L5_mE-K2ItKIlJUgIHa0HnlHKgmVaJzpngpaJpTji31nACQjGRacOSKqM8TUsQOSMsSyo2RpO_7Zuq5c67Rvkv2Sknl7NCupbumARCgZM0-STsG5R3W5I</recordid><startdate>2016</startdate><enddate>2016</enddate><creator>Adam, J.</creator><creator>Aphecetche, Laurent</creator><creator>Baldisseri, A.</creator><creator>Batigne, Guillaume</creator><creator>Belikov, I.</creator><creator>Borel, H.</creator><creator>Castellanos, J. 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The analysis was performed on a data sample of Pb-Pb collisions at a centre-of-mass energy per nucleon pair, $\sqrt{s_{\rm NN}}$, of 2.76 TeV in two different centrality classes, namely 0-10% and 20-50%. D$_s^+$ mesons and their antiparticles were reconstructed at mid-rapidity from their hadronic decay channel D$_s^+\rightarrow\phi\pi^+$, with $\phi\rightarrow$K$^-$K$^+$, in the transverse momentum intervals $4< p_{\rm T}<12$ GeV/$c$ and $6< p_{\rm T}<12$ GeV/$c$ for the 0-10% and 20-50% centrality classes, respectively. The nuclear modification factor $R_{\rm AA}$ was computed by comparing the $p_{\rm T}$-differential production yields in Pb-Pb collisions to those in proton-proton (pp) collisions at the same energy. This pp reference was obtained using the cross section measured at $\sqrt{s}= 7$ TeV and scaled to $\sqrt{s}= 2.76$ TeV. The $R_{\rm AA}$ of D$_s^+$ mesons was compared to that of non-strange D mesons in the 10% most central Pb-Pb collisions. At high $p_{\rm T}$ ($8< p_{\rm T}<12$ GeV/$c$) a suppression of the D$_s^+$-meson yield by a factor of about three, compatible within uncertainties with that of non-strange D mesons, is observed. At lower $p_{\rm T}$ ($4< p_{\rm T}<8$ GeV/$c$) the values of the D$_s^+$-meson $R_{\rm AA}$ are larger than those of non-strange D mesons, although compatible within uncertainties. The production ratios D$_s^+$/D$^0$ and D$_s^+$\D$^+$ were also measured in Pb-Pb collisions and compared to their values in proton-proton collisions.]]></abstract><pub>Springer Verlag (Germany)</pub><doi>10.1007/JHEP03(2016)082</doi><orcidid>https://orcid.org/0000-0002-2646-6189</orcidid><orcidid>https://orcid.org/0000-0001-7382-1609</orcidid><orcidid>https://orcid.org/0000-0001-5283-3520</orcidid><orcidid>https://orcid.org/0000-0002-8657-6742</orcidid><orcidid>https://orcid.org/0000-0001-7662-3878</orcidid><orcidid>https://orcid.org/0000-0001-8638-6300</orcidid><orcidid>https://orcid.org/0000-0002-1242-6776</orcidid><orcidid>https://orcid.org/0000-0002-5377-5163</orcidid><orcidid>https://orcid.org/0000-0002-9067-0803</orcidid><orcidid>https://orcid.org/0000-0003-3069-726X</orcidid></addata></record>
fulltext	fulltext
identifier	ISSN: 1029-8479
ispartof	The journal of high energy physics, 2016, Vol.3
issn	1029-8479
language	eng
recordid	cdi_hal_primary_oai_HAL_in2p3_01205164v1
source	Springer Open Access; ProQuest - Publicly Available Content Database
subjects	High Energy Physics - Experiment Nuclear Experiment Physics
title	Measurement of D$_s^+$ production and nuclear modification factor in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV
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