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A measurement is presented of the charged hadron multiplicity in hadronic PbPb collisions, as a function of pseudorapidity and centrality, at a collision energy of 2.76 TeV per nucleon pair. The data sample is collected using the CMS detector and a minimum-bias trigger, with the CMS solenoid off. The number of charged hadrons is measured both by counting the number of reconstructed particle hits and by forming hit doublets of pairs of layers in the pixel detector. The two methods give consistent results. The charged hadron multiplicity density, dN(ch)/d eta vertical bar(eta=0), for head-on collisions is found to be 1612 +/- 55, where the uncertainty is dominated by systematic effects. Comparisons of these results to previous measurements and to various models are also presented.
Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV
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Ball;D. Barney;A. J. Bell;D. Benedetti;C. Bernet;W. Bialas;P. Bloch;A. Bocci;S. Bolognesi;M. Bona;H. Breuker;K. Bunkowski;T. Camporesi;G. Cerminara;T. Christiansen;J. A. Coarasa;B. Cure;D. D'Enterria;A. D. Roeck;S. D. Guida;N. Dupont Sagorin;A. Elliott Peisert;B. Frisch;W. Funk;A. Gaddi;G. Georgiou;H. Gerwig;D. Gigi;K. Gill;D. Giordano;F. Glege;R. G. Garrido;M. Gouzevitch;P. Govoni;S. Gowdy;R. Guida;L. Guiducci;M. Hansen;C. Hartl;J. Harvey;J. Hegeman;B. Hegner;H. F. Hoffmann;V. Innocente;P. Janot;K. Kaadze;E. Karavakis;P. Lecoq;C. Lourenco;T. Maeki;M. Malberti;L. Malgeri;M. Mannelli;L. Masetti;A. Maurisset;F. Meijers;S. Mersi;E. Meschi;R. Moser;M. U. Mozer;M. Mulders;E. Nesvold;M. Nguyen;T. Orimoto;L. Orsini;E. P. Cortezon;E. Perez;A. Petrilli;A. Pfeiffer;M. Pierini;M. Pimiae;D. Piparo;G. Polese;L. Quertenmont;A. Racz;W. Reece;J. R. Antunes;G. Roland;T. Rommerskirchen;C. Rovelli;M. Rovere;H. Sakulin;C. Schaefer;C. Schwick;I. Segoni;A. Sharma;P. Siegrist;P. Silva;M. Simon;P. Sphicas;D. 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W. Chang;Y. Chao;K. F. Chen;W. S. Hou;Y. Hsiung;K. Y. Kao;Y. J. Lei;R. S. Lu;J. G. Shiu;Y. M. Tzeng;X. Wan;M. Wang;A. Adiguzel;M. N. Bakirci;S. Cerci;C. Dozen;I. Dumanoglu;E. Eskut;S. Girgis;G. Gokbulut;I. Hos;E. E. Kangal;A. K. Topaksu;G. Onengut;K. Ozdemir;S. Ozturk;A. Polatoz;K. Sogut;D. S. Cerci;B. Tali;H. Topakli;D. Uzun;L. N. Vergili;M. Vergili;I. V. Akin;T. Aliev;B. Bilin;S. Bilmis;M. Deniz;H. Gamsizkan;A. M. Guler;K. Ocalan;A. Ozpineci;M. Serin;R. Sever;U. E. Surat;M. Yalvac;E. Yildirim;M. Zeyrek;M. Deliomeroglu;D. Demir;E. Gulmez;B. Isildak;M. Kaya;O. Kaya;M. Ozbek;S. Ozkorucuklu;N. Sonmez;L. Levchuk;F. Bostock;J. J. Brooke;T. L. Cheng;E. Clement;D. Cussans;R. Frazier;J. Goldstein;M. Grimes;D. Hartley;G. P. Heath;H. F. Heath;L. Kreczko;S. Metson;D. M. Newbold;K. Nirunpong;A. Poll;S. Senkin;V. J. Smith;L. Basso;K. W. Bell;A. Belyaev;C. Brew;R. M. Brown;B. Camanzi;D. J. A.;J. A. Coughlan;K. Harder;S. Harper;J. Jackson;B. W. Kennedy;E. Olaiya;D. Petyt;B. C. Radburn Smith;C. H. Shepherd Themistocleous;I. R. Tomalin;W. J. Womersley;R. Bainbridge;G. Ball;J. Ballin;R. Beuselinck;O. Buchmuller;D. Colling;N. Cripps;M. Cutajar;G. Davies;M. D. Negra;W. Ferguson;J. Fulcher;D. Futyan;A. Gilbert;A. G. Bryer;G. Hall;Z. Hatherell;J. Hays;G. Iles;M. Jarvis;G. Karapostoli;L. Lyons;B. C. MacEvoy;A. M. Magnan;J. Marrouche;B. Mathias;R. Nandi;J. Nash;A. Nikitenko;A. Papageorgiou;M. Pesaresi;K. Petridis;M. Pioppi;D. M. Raymond;S. Rogerson;N. Rompotis;A. Rose;M. J. Ryan;C. Seez;P. Sharp;A. Sparrow;A. Tapper;S. Tourneur;M. V. Acosta;T. Virdee;S. Wakefield;N. Wardle;D. Wardrope;T. Whyntie;M. Barrett;M. Chadwick;J. E. Cole;P. R. Hobson;A. Khan;P. Kyberd;D. Leslie;W. Martin;I. D. Reid;L. Teodorescu;K. Hatakeyama;H. Liu;C. Henderson;T. Bose;E. C. Jarrin;C. Fantasia;A. Heister;J. S. John;P. Lawson;D. Lazic;J. Rohlf;D. Sperka;L. Sulak;A. Avetisyan;S. Bhattacharya;J. P. Chou;D. Cutts;A. Ferapontov;U. Heintz;S. Jabeen;G. Kukartsev;G. Landsberg;M. Luk;M. Narain;D. Nguyen;M. Segala;T. Sinthuprasith;T. Speer;K. V. Tsang;R. Breedon;G. Breto;M. C. De;S. Chauhan;M. Chertok;J. Conway;R. Conway;P. T. Cox;J. Dolen;R. Erbacher;E. Friis;R. Houtz;W. Ko;A. Kopecky;R. Lander;H. Liu;O. Mall;S. Maruyama;T. Miceli;M. Nikolic;D. Pellett;J. Robles;B. Rutherford;S. Salur;T. Schwarz;M. Searle;J. Smith;M. Squires;M. Tripathi;R. V. Sierra;C. Veelken;V. Andreev;K. Arisaka;D. Cline;R. Cousins;A. Deisher;J. Duris;S. Erhan;C. Farrell;J. Hauser;M. Ignatenko;C. Jarvis;C. Plager;G. Rakness;P. Schlein;J. Tucker;V. Valuev;J. Babb;R. Clare;J. Ellison;J. W. Gary;F. Giordano;G. Hanson;G. Y. Jeng;S. C. Kao;H. Liu;O. R. Long;A. Luthra;H. Nguyen;S. Paramesvaran;B. C. Shen;R. Stringer;J. Sturdy;S. Sumowidagdo;R. Wilken;S. Wimpenny;W. Andrews;J. G. Branson;G. B. Cerati;D. Evans;F. Golf;A. Holzner;R. Kelley;M. Lebourgeois;J. Letts;B. Mangano;S. Padhi;C. Palmer;G. Petrucciani;H. Pi;M. Pieri;R. Ranieri;M. Sani;V. Sharma;S. Simon;E. Sudano;M. Tadel;Y. Tu;A. Vartak;S. Wasserbaech;F. Wfirthwein;A. Yagil;J. Yoo;D. Barge;BELLAN, Riccardo;C. Campagnari;M. D'Alfonso;T. Danielson;K. Flowers;P. Geffert;J. Incandela;C. Justus;P. Kalavase;S. A. Koay;D. Kovalskyi;V. Krutelyov;S. Lowette;N. Mccoll;S. D. Mullin;V. Pavlunin;F. Rebassoo;J. Ribnik;J. Richman;R. Rossin;D. Stuart;W. To;J. R. Vlimant;C. West;A. Apresyan;A. Bornheim;J. Bunn;Y. Chen;M. Gataullin;Y. Ma;A. Mott;H. B. Newman;C. Rogan;K. Shin;V. Timciuc;P. Traczyk;J. Veverka;R. Wilkinson;Y. Yang;R. Y. Zhu;B. Akgun;R. Carroll;T. Ferguson;Y. Iiyama;D. W. Jang;S. Y. Jun;Y. F. Liu;M. Paulini;J. Russ;H. Vogel;I. Vorobiev;J. P. Cumalat;M. E. Dinardo;B. R. Drell;C. J. Edelmaier;W. T. Ford;A. Gaz;B. Heyburn;E. L. Lopez;U. Nauenberg;J. G. Smith;K. Stenson;K. A. Ulmer;S. R. Wagner;S. L. Zang;L. Agostino;J. Alexander;A. Chatterjee;N. Eggert;L. K. Gibbons;B. Heltsley;K. Henriksson;W. Hopkins;A. Khukhunaishvili;B. Kreis;Y. Liu;G. N. Kaufman;J. R. Patterson;D. Puigh;A. Ryd;M. Saelim;E. Salvati;X. Shi;W. Sun;W. D. Teo;J. Thom;J. Thompson;J. Vaughan;Y. Weng;L. Winstrom;P. Wittich;A. Biselli;G. Cirino;D. Winn;S. Abdullin;M. Albrow;J. Anderson;G. Apollinari;M. Atac;J. A. Bakken;L. A. T.;A. Beretvas;J. Berryhill;P. C. Bhat;I. Bloch;K. Burkett;J. N. Butler;V. Chetluru;H. W. K.;F. Chlebana;S. Cihangir;W. Cooper;D. P. Eartly;V. D. Elvira;S. Esen;I. Fisk;J. Freeman;Y. Gao;E. Gottschalk;D. Green;K. Gunthoti;O. Gutsche;J. Hanlon;R. M. Harris;J. Hirschauer;B. Hooberman;H. Jensen;S. Jindariani;M. Johnson;U. Joshi;R. Khatiwada;B. Klima;K. Kousouris;S. Kunori;S. Kwan;C. Leonidopoulos;P. Limon;D. Lincoln;R. Lipton;J. Lykken;K. Maeshima;J. M. Marraffino;D. Mason;P. McBride;T. Miao;K. Mishra;S. Mrenna;Y. Musienko;C. Newman Holmes;V. O'Dell;J. Pivarski;R. Pordes;O. Prokofyev;E. Sexton Kennedy;S. Sharma;W. J. Spalding;L. Spiegel;P. Tan;L. Taylor;S. Tkaczyk;L. Uplegger;E. W. Vaandering;R. Vidal;J. Whitmore;W. Wu;F. Yang;F. Yumiceva;J. C. Yun;D. Acosta;P. Avery;D. Bourilkov;M. Chen;S. Das;M. D. Gruttola;G. P. Di;D. Dobur;A. Drozdetskiy;R. D. Field;M. Fisher;Y. Fu;I. K. Furic;J. Gartner;S. Goldberg;J. Hugon;B. Kim;J. Konigsberg;A. Korytov;A. Kropivnitskaya;T. Kypreos;J. F. Low;K. Matchev;G. Mitselmakher;L. Muniz;P. Myeonghun;C. Prescott;R. Remington;A. Rinkevicius;M. Schmitt;B. Scurlock;P. Sellers;N. Skhirtladze;M. Snowball;D. Wang;J. Y. Lton;M. Zakaria;V. Gaultney;L. M. Lebolo;S. Linn;P. Markowitz;G. Martinez;J. L. Rodriguez;T. Adams;A. Askew;J. Bochenek;J. Chen;B. Diamond;S. V. Gleyzer;J. Haas;S. Hagopian;V. Hagopian;M. Jenkins;K. F. Johnson;H. Prosper;S. Sekmen;V. Veeraraghavan;M. M. Baarmand;B. Dorney;M. Hohlmann;H. Kalakhety;I. Vodopiyanov;M. R. Adams;I. M. Anghel;L. Apanasevich;Y. Bai;V. E. Bazterra;R. R. Betts;J. Callner;R. Cavanaugh;C. Dragoiu;L. Gauthier;C. E. Gerber;D. J. Hofman;S. Khalatyan;G. J. Kunde;F. Lacroix;M. Malek;C. O'Brien;C. Silkworth;C. Silvestre;A. Smoron;D. Strom;N. Varelas;U. Akgun;E. A. Albayrak;B. Bilki;W. Clarida;F. Duru;C. K. Lae;E. McCliment;J. Merlo;H. Mermerkaya;A. Mestvirishvili;A. Moeller;J. Nachtman;C. R. Newsom;E. Norbeck;J. Olson;Y. Onel;F. Ozok;S. Sen;J. Wetzel;T. Yetkin;K. Yi;B. A. Barnett;B. Blumenfeld;A. Bonato;C. Eskew;D. Fehling;G. Giurgiu;A. V. Gritsan;Z. J. Guo;G. Hu;P. Maksimovic;S. Rappoccio;M. Swartz;N. V. Iran;A. Whitbeck;P. Baringer;A. Bean;G. Benelli;O. Grachov;R. P. Kenny;M. Murray;D. Noonan;S. Sanders;J. S. Wood;V. Zhukova;A. F. Barfuss;T. Bolton;I. Chakaberia;A. Ivanov;S. Khalil;M. Makouski;Y. Maravin;S. Shrestha;I. Svintradze;Z. Wan;J. Gronberg;D. Lange;D. Wright;A. Baden;M. Boutemeur;S. C. Eno;D. Ferencek;J. A. Gomez;N. J. Hadley;R. G. Kellogg;M. Kim;Y. Lu;A. C. Mignerey;K. Rossato;P. Rumerio;F. Santanastasio;A. Skuja;J. Temple;M. B. Tonjes;S. C. Tonwar;E. Twedt;B. Alver;G. Bauer;J. Bendavid;W. Busza;E. Butz;I. A. Cali;M. Chan;V. Dutta;P. Everaerts;G. G. Ceballos;M. Goncharov;K. A. Hahn;P. Harris;Y. Kim;M. Klute;Y. Lee;W. Li;C. Loizides;P. D. Luckey;T. Ma;S. Nahn;C. Paus;D. Ralph;C. Roland;G. Roland;M. Rudolph;G. S. F.;F. Stoeckli;K. Sumorok;K. Sung;D. Velicanu;E. A. Wenger;R. Wolf;S. Xie;M. Yang;Y. Yilmaz;A. S. Yoon;M. Zanetti;S. I. Cooper;P. Cushman;B. Dahmes;A. D. Benedetti;G. Franzoni;A. Gude;J. Haupt;K. Klapoetke;Y. Kubota;J. Mans;N. Pastika;V. Rekovic;R. Rusack;M. Sasseville;A. Singovsky;N. Tambe;J. Turkewitz;L. M. Cremaldi;R. Godang;R. Kroeger;L. Perera;R. Rahmat;D. A. Sanders;D. Summers;K. Bloom;S. Bose;J. Butt;D. R. Claes;A. Dominguez;M. Eads;P. Jindal;J. Keller;T. Kelly;I. Kravchenko;J. Lazo Flores;H. Malbouisson;S. Malik;G. R. Snow;U. Baur;A. Godshalk;I. Iashvili;S. Jain;A. Kharchilava;A. Kumar;S. P. Shipkowski;K. Smith;G. Alverson;E. Barberis;D. Baumgartel;O. Boeriu;M. Chasco;S. Reucroft;J. Swain;D. Trocino;D. Wood;J. Zhang;A. Anastassov;A. Kubik;N. Mucia;N. Odell;R. A. Ofierzynski;B. Pollack;A. Pozdnyakov;M. Schmitt;S. Stoynev;M. Velasco;S. Won;L. Antonelli;D. Berry;A. Brinkerhoff;M. Hildreth;C. Jessop;D. J. Karmgard;J. Kolb;T. Kolberg;K. Lannon;W. Luo;S. Lynch;N. Marinelli;D. M. Morse;T. Pearson;R. Ruchti;J. Slaunwhite;N. Valls;M. Wayne;J. Ziegler;B. Bylsma;L. S. Durkin;J. Gu;C. Hill;P. Killewald;K. Kotov;T. Y. Ling;M. Rodenburg;C. Vuosalo;G. Williams;N. Adam;E. Berry;P. Elmer;D. Gerbaudo;V. Halyo;P. Hebda;A. Hunt;E. Laird;D. L. Pegna;D. Marlow;T. Medvedeva;M. Mooney;J. Olsen;P. Piroue;X. Quan;B. Safdi;H. Saka;D. Stickland;C. Tully;J. S. Werner;A. Zuranski;J. G. Acosta;X. T. Huang;A. Lopez;H. Mendez;S. Oliveros;J. E. Ramirez;A. Zatserklyaniy;E. Alagoz;V. E. Barnes;G. Bolla;L. Borrello;D. Bortoletto;M. D. Mattia;A. Everett;A. F. Garfinkel;L. Gutay;Z. Hu;M. Jones;O. Koybasi;M. Kress;A. T. Laasanen;N. Leonardo;C. Liu;V. Maroussov;P. Merkel;D. H. Miller;N. Neumeister;I. Shipsey;D. Silvers;A. Svyatkovskiy;M. V. Marono;H. D. Yoo;J. Zablocki;Y. Zheng;S. Guragain;N. Parashar;A. Adair;C. Boulahouache;K. M. Ecklund;F. J. M.;B. P. Padley;R. Redjimi;J. Roberts;J. Zabel;B. Betchart;A. Bodek;Y. S. Chung;COVARELLI, Roberto;P. d. Barbaro;R. Demina;Y. Eshaq;H. Flacher;A. Garcia Bellido;P. Goldenzweig;Y. Gotra;J. Han;A. Harel;D. C. Miner;G. Petrillo;W. Sakumoto;D. Vishnevskiy;M. Zielinski;A. Bhatti;R. Ciesielski;L. Demortier;K. Goulianos;G. Lungu;S. Malik;C. Mesropian;S. Arora;O. Atramentov;A. Barker;C. Contreras Campana;E. Contreras Campana;D. Duggan;Y. Gershtein;R. Gray;E. Halkiadakis;D. Hidas;D. Hits;A. Lath;S. Panwalkar;R. Patel;A. Richards;K. Rose;S. Schnetzer;S. Somalwar;R. Stone;S. Thomas;G. Cerizza;M. Hollingsworth;S. Spanier;Z. C. Yang;A. York;R. Eusebi;W. Flanagan;J. Gilmore;A. Gurrola;T. Kamon;V. Khotilovich;R. Montalvo;I. Osipenkov;Y. Pakhotin;A. Perloff;A. Safonov;S. Sengupta;I. Suarez;A. Tatarinov;D. Toback;N. Akchurin;C. Bardak;J. Damgov;P. R. Dudero;C. Jeong;K. Kovitanggoon;S. W. Lee;T. Libeiro;P. Mane;Y. Roh;A. Sill;I. Volobouev;R. Wigmans;E. Yazgan;E. Appelt;E. Brownson;D. Engh;C. Florez;W. Gabella;M. Issah;W. Johns;C. Johnston;P. Kurt;C. Maguire;A. Melo;P. Sheldon;B. Snook;S. Tuo;J. Velkovska;M. W. Arenton;M. Balazs;S. Boutle;B. Cox;B. Francis;S. Goadhouse;J. Goodell;R. Hirosky;A. Ledovskoy;C. Lin;C. Neu;J. Wood;R. Yohay;S. Gollapinni;R. Harr;P. E. Karchin;C. K. Kankanamge;P. Lamichhane;M. Mattson;C. Milstene;A. Sakharov;M. Anderson;M. Bachtis;D. Belknap;J. N. Bellinger;D. Carlsmith;M. Cepeda;S. Dasu;J. Efron;L. Gray;K. S. Grogg;M. Grothe;R. Hall Wilton;M. Herndon;A. Herve;P. Klabbers;J. Klukas;A. Lanaro;C. Lazaridis;J. Leonard;R. Loveless;A. Mohapatra;I. Ojalvo;W. Parker;I. Ross;A. Savin;W. H. Smith;J. Swanson;M. Weinberg
2011
Abstract
A measurement is presented of the charged hadron multiplicity in hadronic PbPb collisions, as a function of pseudorapidity and centrality, at a collision energy of 2.76 TeV per nucleon pair. The data sample is collected using the CMS detector and a minimum-bias trigger, with the CMS solenoid off. The number of charged hadrons is measured both by counting the number of reconstructed particle hits and by forming hit doublets of pairs of layers in the pixel detector. The two methods give consistent results. The charged hadron multiplicity density, dN(ch)/d eta vertical bar(eta=0), for head-on collisions is found to be 1612 +/- 55, where the uncertainty is dominated by systematic effects. Comparisons of these results to previous measurements and to various models are also presented.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/96966
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simulazione ASN
Il report seguente simula gli indicatori relativi alla produzione scientifica in relazione alle soglie ASN 2018-2020 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione.
La simulazione si basa sui dati IRIS e presenta gli indicatori calcolati alla data indicata sul report. Si ricorda che in sede di domanda ASN presso il MIUR gli indicatori saranno invece calcolati a partire dal 1° gennaio rispettivamente del quinto/decimo/quindicesimo anno precedente la scadenza del quadrimestre di presentazione della domanda (art 2 del DM 598/2018).
In questa simulazione pertanto il valore degli indicatori potrà differire da quello conteggiato all’atto della domanda ASN effettuata presso il MIUR a seguito di:
Correzioni imputabili a eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori.
Presenza di eventuali errori di catalogazione e/o dati mancanti in IRIS
Variabilità nel tempo dei valori citazionali (per i settori bibliometrici)
Variabilità della finestra temporale considerata in funzione della sessione di domanda ASN a cui si partecipa.
La presente simulazione è stata realizzata sulla base delle regole riportate nel DM 598/2018 e dell'allegata Tabella A e delle specifiche definite all'interno del Focus Group Cineca relativo al modulo IRIS ER. Il Cineca non si assume alcuna responsabilità in merito all'uso che il diretto interessato o terzi faranno della simulazione.