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A measurement of the production cross section ratio sigma(chi[b2](1P)) / sigma( chi[b1](1P)) is presented. The chi[b1](1P) and chi[b2](1P) bottomonium states, promptly produced in pp collisions at sqrt(s) = 8 TeV, are detected by the CMS experiment at the CERN LHC through their radiative decays chi[b1,2](1P) to Upsilon(1S) + gamma. The emitted photons are measured through their conversion to electron-positron pairs, whose reconstruction allows the two states to be resolved. The Upsilon(1S) is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7 inverse femtobarns is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, abs(eta[gamma]) < 1.0; the Upsilon(1S) rapidity, abs(y[Upsilon]) < 1.5; and the Upsilon(1S) transverse momentum, 7 < pt[Upsilon] < 40 GeV. The cross section ratio shows no significant dependence on the Upsilon(1S) transverse momentum, with a measured average value of 0.85 +/- 0.07 (stat+syst) +/- 0.08 (BF), where the first uncertainty is the combination of the experimental statistical and systematic uncertainties and the second is from the uncertainty in the ratio of the chi[b] branching fractions.
Measurement of the production cross section ratio sigma(chi[b2](1P)) / sigma(chi[b1](1P)) in pp collisions at sqrt(s) = 8 TeV / V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Erö, C. Fabjan, M. Friedl, R. Frühwirth, V.M. Ghete, C. Hartl, N. Hörmann, J. Hrubec, M. Jeitler, W. Kiesenhofer, V. Knünz, M. Krammer, I. Krätschmer, D. Liko, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 743:(2015), pp. 383-402. [10.1016/j.physletb.2015.02.048]
Measurement of the production cross section ratio sigma(chi[b2](1P)) / sigma(chi[b1](1P)) in pp collisions at sqrt(s) = 8 TeV
V. Khachatryan;A. M. Sirunyan;A. Tumasyan;W. Adam;T. Bergauer;M. Dragicevic;J. Erö;C. Fabjan;M. Friedl;R. Frühwirth;V. M. Ghete;C. Hartl;N. Hörmann;J. Hrubec;M. Jeitler;W. Kiesenhofer;V. Knünz;M. Krammer;I. Krätschmer;D. Liko;I. Mikulec;D. Rabady;B. Rahbaran;H. Rohringer;R. Schöfbeck;J. Strauss;A. Taurok;W. Treberer Treberspurg;W. Waltenberger;C. E. Wulz;V. Mossolov;N. Shumeiko;J. Suarez Gonzalez;S. Alderweireldt;M. Bansal;S. Bansal;T. Cornelis;E. A. De Wolf;X. Janssen;A. Knutsson;S. Luyckx;S. Ochesanu;B. Roland;R. Rougny;M. Van De Klundert;H. Van Haevermaet;P. Van Mechelen;N. Van Remortel;A. Van Spilbeeck;F. Blekman;S. Blyweert;J. D'Hondt;N. Daci;N. Heracleous;J. Keaveney;S. Lowette;M. Maes;A. Olbrechts;Q. Python;D. Strom;S. Tavernier;W. Van Doninck;P. Van Mulders;G. P. Van Onsem;I. Villella;C. Caillol;B. Clerbaux;G. De Lentdecker;D. Dobur;L. Favart;A. P. R. Gay;A. Grebenyuk;A. Léonard;A. Mohammadi;L. Perniè;T. Reis;T. Seva;L. Thomas;C. Vander Velde;P. Vanlaer;J. Wang;V. Adler;K. Beernaert;L. Benucci;A. Cimmino;S. Costantini;S. Crucy;S. Dildick;A. Fagot;G. Garcia;J. Mccartin;A. A. Ocampo Rios;D. Ryckbosch;S. Salva Diblen;M. Sigamani;N. Strobbe;F. Thyssen;M. Tytgat;E. Yazgan;N. Zaganidis;S. Basegmez;C. Beluffi;G. Bruno;R. Castello;A. Caudron;L. Ceard;G. G. Da Silveira;C. Delaere;T. du Pree;D. Favart;L. Forthomme;A. Giammanco;J. Hollar;P. Jez;M. Komm;V. Lemaitre;C. Nuttens;D. Pagano;L. Perrini;A. Pin;K. Piotrzkowski;A. Popov;L. Quertenmont;M. Selvaggi;M. Vidal Marono;J. M. Vizan Garcia;N. Beliy;T. Caebergs;E. Daubie;G. H. Hammad;W. L. Aldá Júnior;G. A. Alves;L. Brito;M. Correa Martins Junior;T. Dos Reis Martins;C. Mora Herrera;M. E. Pol;W. Carvalho;J. Chinellato;A. Custódio;E. M. Da Costa;D. De Jesus Damiao;C. De Oliveira Martins;S. Fonseca De Souza;H. Malbouisson;D. Matos Figueiredo;L. Mundim;H. Nogima;W. L. Prado Da Silva;J. Santaolalla;A. Santoro;A. Sznajder;E. J. Tonelli Manganote;A. Vilela Pereira;C. A. Bernardes;S. Dogra;T. R. Fernandez Perez Tomei;E. M. 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Zarubin;V. Golovtsov;Y. Ivanov;V. Kim;P. Levchenko;V. Murzin;V. Oreshkin;I. Smirnov;V. Sulimov;L. Uvarov;S. Vavilov;A. Vorobyev;A.n. Vorobyev;Y.u. Andreev;A. Dermenev;S. Gninenko;N. Golubev;M. Kirsanov;N. Krasnikov;A. Pashenkov;D. Tlisov;A. Toropin;V. Epshteyn;V. Gavrilov;N. Lychkovskaya;V. Popov;G. Safronov;S. Semenov;A. Spiridonov;V. Stolin;E. Vlasov;A. Zhokin;V. Andreev;M. Azarkin;I. Dremin;M. Kirakosyan;A. Leonidov;G. Mesyats;S. V. Rusakov;A. Vinogradov;A. Belyaev;E. Boos;M. Dubinin;L. Dudko;A. Ershov;A. Gribushin;V. Klyukhin;O. Kodolova;I. Lokhtin;S. Obraztsov;S. Petrushanko;V. Savrin;A. Snigirev;I. Azhgirey;I. Bayshev;S. Bitioukov;V. Kachanov;A. Kalinin;D. Konstantinov;V. Krychkine;V. Petrov;R. Ryutin;A. Sobol;L. Tourtchanovitch;S. Troshin;N. Tyurin;A. Uzunian;A. Volkov;P. Adzic;M. Ekmedzic;J. Milosevic;V. Rekovic;J. Alcaraz Maestre;C. Battilana;E. Calvo;M. Cerrada;M. Chamizo Llatas;N. Colino;B. De La Cruz;A. Delgado Peris;D. Domínguez Vázquez;A. Escalante Del Valle;C. 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David;F. De Guio;A. De Roeck;S. De Visscher;M. Dobson;M. Dordevic;N. Dupont Sagorin;A. Elliott Peisert;J. Eugster;G. Franzoni;W. Funk;D. Gigi;K. Gill;D. Giordano;M. Girone;F. Glege;R. Guida;S. Gundacker;M. Guthoff;J. Hammer;M. Hansen;P. Harris;J. Hegeman;V. Innocente;P. Janot;K. Kousouris;K. Krajczar;P. Lecoq;C. Lourenço;N. Magini;L. Malgeri;M. Mannelli;J. Marrouche;L. Masetti;F. Meijers;S. Mersi;E. Meschi;F. Moortgat;S. Morovic;M. Mulders;P. Musella;L. Orsini;L. Pape;E. Perez;L. Perrozzi;A. Petrilli;G. Petrucciani;A. Pfeiffer;M. Pierini;M. Pimiä;D. Piparo;M. Plagge;A. Racz;G. Rolandi;M. Rovere;H. Sakulin;C. Schäfer;C. Schwick;A. Sharma;P. Siegrist;P. Silva;M. Simon;P. Sphicas;D. Spiga;J. Steggemann;B. Stieger;M. Stoye;D. Treille;A. Tsirou;G. I. Veres;J. R. Vlimant;N. Wardle;H. K. Wöhri;H. Wollny;W. D. Zeuner;W. Bertl;K. Deiters;W. Erdmann;R. Horisberger;Q. Ingram;H. C. Kaestli;D. Kotlinski;U. Langenegger;D. Renker;T. Rohe;F. Bachmair;L. Bäni;L. Bianchini;P. Bortignon;M. A. 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Marlow;T. Medvedeva;M. Mooney;J. Olsen;P. Piroué;X. Quan;H. Saka;D. Stickland;C. Tully;J. S. Werner;S. C. Zenz;A. Zuranski;E. Brownson;H. Mendez;J. E. Ramirez Vargas;V. E. Barnes;D. Benedetti;G. Bolla;D. Bortoletto;M. De Mattia;Z. Hu;M. K. Jha;M. Jones;K. Jung;M. Kress;N. Leonardo;D. Lopes Pegna;V. Maroussov;P. Merkel;D. H. Miller;N. Neumeister;B. C. Radburn Smith;X. Shi;I. Shipsey;D. Silvers;A. Svyatkovskiy;F. Wang;W. Xie;L. Xu;H. D. Yoo;J. Zablocki;Y. Zheng;N. Parashar;J. Stupak;A. Adair;B. Akgun;K. M. Ecklund;F. J. M. Geurts;W. Li;B. Michlin;B. P. Padley;R. Redjimi;J. Roberts;J. Zabel;B. Betchart;A. Bodek;R. Covarelli;P. de Barbaro;R. Demina;Y. Eshaq;T. Ferbel;A. Garcia Bellido;P. Goldenzweig;J. Han;A. Harel;A. Khukhunaishvili;G. Petrillo;D. Vishnevskiy;R. Ciesielski;L. Demortier;K. Goulianos;G. Lungu;C. Mesropian;S. Arora;A. Barker;J. P. Chou;C. Contreras Campana;E. Contreras Campana;D. Duggan;D. Ferencek;Y. Gershtein;R. Gray;E. Halkiadakis;D. Hidas;S. Kaplan;A. Lath;S. Panwalkar;M. Park;R. Patel;S. Salur;S. Schnetzer;S. Somalwar;R. Stone;S. Thomas;P. Thomassen;M. Walker;K. Rose;S. Spanier;A. York;O. Bouhali;A. Castaneda Hernandez;R. Eusebi;W. Flanagan;J. Gilmore;T. Kamon;V. Khotilovich;V. Krutelyov;R. Montalvo;I. Osipenkov;Y. Pakhotin;A. Perloff;J. Roe;A. Rose;A. Safonov;T. Sakuma;I. Suarez;A. Tatarinov;N. Akchurin;C. Cowden;J. Damgov;C. Dragoiu;P. R. Dudero;J. Faulkner;K. Kovitanggoon;S. Kunori;S. W. Lee;T. Libeiro;I. Volobouev;E. Appelt;A. G. Delannoy;S. Greene;A. Gurrola;W. Johns;C. Maguire;Y. Mao;A. Melo;M. Sharma;P. Sheldon;B. Snook;S. Tuo;J. Velkovska;M. W. Arenton;S. Boutle;B. Cox;B. Francis;J. Goodell;R. Hirosky;A. Ledovskoy;H. Li;C. Lin;C. Neu;J. Wood;C. Clarke;R. Harr;P. E. Karchin;C. Kottachchi Kankanamge Don;P. Lamichhane;J. Sturdy;D. A. Belknap;D. Carlsmith;M. Cepeda;S. Dasu;L. Dodd;S. Duric;E. Friis;R. Hall Wilton;M. Herndon;A. Hervé;P. Klabbers;A. Lanaro;C. Lazaridis;A. Levine;R. Loveless;A. Mohapatra;I. Ojalvo;T. Perry;G. A. Pierro;G. Polese;I. Ross;T. Sarangi;A. Savin;W. H. Smith;C. Vuosalo;N. Woods
2015
Abstract
A measurement of the production cross section ratio sigma(chi[b2](1P)) / sigma( chi[b1](1P)) is presented. The chi[b1](1P) and chi[b2](1P) bottomonium states, promptly produced in pp collisions at sqrt(s) = 8 TeV, are detected by the CMS experiment at the CERN LHC through their radiative decays chi[b1,2](1P) to Upsilon(1S) + gamma. The emitted photons are measured through their conversion to electron-positron pairs, whose reconstruction allows the two states to be resolved. The Upsilon(1S) is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7 inverse femtobarns is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, abs(eta[gamma]) < 1.0; the Upsilon(1S) rapidity, abs(y[Upsilon]) < 1.5; and the Upsilon(1S) transverse momentum, 7 < pt[Upsilon] < 40 GeV. The cross section ratio shows no significant dependence on the Upsilon(1S) transverse momentum, with a measured average value of 0.85 +/- 0.07 (stat+syst) +/- 0.08 (BF), where the first uncertainty is the combination of the experimental statistical and systematic uncertainties and the second is from the uncertainty in the ratio of the chi[b] branching fractions.
V. Khachatryan; A.M. Sirunyan; A. Tumasyan; W. Adam; T. Bergauer; M. Dragicevic; J. Erö; C. Fabjan; M. Friedl; R. Frühwirth; V.M. Ghete; C. Hartl; N. ...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/996231
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simulazione ASN
Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 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 sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
La presente simulazione è stata realizzata sulla base delle specifiche raccolte sul tavolo ER del Focus Group IRIS coordinato dall’Università di Modena e Reggio Emilia e delle regole riportate nel DM 589/2018 e allegata Tabella A. Cineca, l’Università di Modena e Reggio Emilia e il Focus Group IRIS non si assumono alcuna responsabilità in merito all’uso che il diretto interessato o terzi faranno della simulazione. Si specifica inoltre che la simulazione contiene calcoli effettuati con dati e algoritmi di pubblico dominio e deve quindi essere considerata come un mero ausilio al calcolo svolgibile manualmente o con strumenti equivalenti.