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A search for supersymmetry through the direct pair production of top squarks, with Higgs (H) or Z bosons in the decay chain, is performed using a data sample of proton–proton collisions at sqrt(s) = 8 TeV collected in 2012 with the CMS detector at the LHC. The sample corresponds to an integrated luminosity of 19.5 fb^{-1}. The search is performed using a selection of events containing leptons and bottom-quark jets. No evidence for a significant excess of events over the standard model background prediction is observed. The results are interpreted in the context of simplified supersymmetric models with pair production of a heavier top-squark mass eigenstate tilde(t)_{2} decaying to a lighter top-squark mass eigenstate tilde(t)_{1} via either tilde(t)_{2} -> H tilde(t)_{1} or tilde(t)_{2} -> Z tilde(t)_{1}, followed in both cases by tilde(t)_{1} -> t tilde(chi)^{0}_{1}, where tilde(chi)^{0}_{1} is an undetected, stable, lightest supersymmetric particle. The interpretation is performed in the region where the mass difference between the tilde(t)_{1} and tilde(chi)^{0}_{1} states is approximately equal to the top-quark mass ( m(tilde(t)_{1}) - m(tilde(chi)^{0}_{1}) =~ m(t) ), which is not probed by searches for direct tilde(t)_{1} squark pair production. The analysis excludes top squarks with masses m(tilde(t)_{2}) < 575 GeV and m(tilde(t)_{1}) < 400 GeV at a 95% confidence level.
Search for top-squark pairs decaying into Higgs or Z bosons in pp collisions at sqrt(s) = 8 TeV / V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Ero, C. Fabjan, M. Friedl, R. Fruhwirth, V.M. Ghete, C. Hartl, N. Hormann, J. Hrubec, M. Jeitler, W. Kiesenhofer, V. Knunz, M. Krammer, I. Kratschmer, D. Liko, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 736:(2014), pp. 371-397. [10.1016/j.physletb.2014.07.053]
Search for top-squark pairs decaying into Higgs or Z bosons in pp collisions at sqrt(s) = 8 TeV
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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. Lourenco;N. Magini;L. Malgeri;M. Mannelli;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. Pimia;D. Piparo;M. Plagge;A. Racz;G. Rolandi;M. Rovere;H. Sakulin;C. Schafer;C. Schwick;S. Sekmen;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. Wohri;W. D. Zeuner;W. Bertl;K. Deiters;W. Erdmann;R. Horisberger;Q. Ingram;H. C. Kaestli;S. Konig;D. Kotlinski;U. Langenegger;D. Renker;T. Rohe;F. Bachmair;L. Bani;L. Bianchini;P. Bortignon;M. A. Buchmann;B. Casal;N. Chanon;A. Deisher;G. Dissertori;M. Dittmar;M. Donega;M. Dunser;P. Eller;C. Grab;D. Hits;W. Lustermann;B. Mangano;A. C. Marini;P. Martinez Ruiz del Arbol;D. Meister;N. Mohr;C. Nageli;P. Nef;F. Nessi Tedaldi;F. Pandolfi;F. Pauss;M. Peruzzi;M. Quittnat;L. Rebane;F. J. Ronga;M. Rossini;A. Starodumov;M. Takahashi;K. Theofilatos;R. Wallny;H. A. Weber;C. Amsler;M. F. Canelli;V. Chiochia;A. De Cosa;A. Hinzmann;T. Hreus;M. Ivova Rikova;B. Kilminster;B. Millan Mejias;J. Ngadiuba;P. Robmann;H. Snoek;S. Taroni;M. Verzetti;Y. Yang;M. Cardaci;K. H. Chen;C. Ferro;C. M. Kuo;W. Lin;Y. J. Lu;R. Volpe;S. S. Yu;P. Chang;Y. H. Chang;Y. W. Chang;Y. Chao;K. F. Chen;P. H. Chen;C. Dietz;U. Grundler;W. S. Hou;K. Y. Kao;Y. J. Lei;Y. F. Liu;R. S. Lu;D. Majumder;E. Petrakou;Y. M. Tzeng;R. Wilken;B. Asavapibhop;N. Srimanobhas;N. Suwonjandee;A. Adiguzel;M. N. Bakirci;S. Cerci;C. Dozen;I. Dumanoglu;E. Eskut;S. Girgis;G. Gokbulut;E. Gurpinar;I. Hos;E. E. Kangal;A. Kayis Topaksu;G. Onengut;K. Ozdemir;S. Ozturk;A. Polatoz;K. Sogut;D. Sunar Cerci;B. Tali;H. Topakli;M. Vergili;I. V. Akin;B. Bilin;S. Bilmis;H. Gamsizkan;G. Karapinar;K. Ocalan;U. E. 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Nicolas Kaufman;J. R. Patterson;A. Ryd;E. Salvati;L. Skinnari;W. Sun;W. D. Teo;J. Thom;J. Thompson;J. Tucker;Y. Weng;L. Winstrom;P. Wittich;D. Winn;S. Abdullin;M. Albrow;J. Anderson;G. Apollinari;L. A. T. Bauerdick;A. Beretvas;J. Berryhill;P. C. Bhat;K. Burkett;J. N. Butler;H. W. K. Cheung;F. Chlebana;S. Cihangir;V. D. Elvira;I. Fisk;J. Freeman;E. Gottschalk;L. Gray;D. Green;S. Grunendahl;O. Gutsche;J. Hanlon;D. Hare;R. M. Harris;J. Hirschauer;B. Hooberman;S. Jindariani;M. Johnson;U. Joshi;K. Kaadze;B. Klima;S. Kwan;J. Linacre;D. Lincoln;R. Lipton;T. Liu;J. Lykken;K. Maeshima;J. M. Marraffino;V. I. Martinez Outschoorn;S. Maruyama;D. Mason;P. McBride;K. Mishra;S. Mrenna;Y. Musienko;S. Nahn;C. Newman Holmes;V. O'Dell;O. Prokofyev;E. Sexton Kennedy;S. Sharma;A. Soha;W. J. Spalding;L. Spiegel;L. Taylor;S. Tkaczyk;N. V. Tran;L. Uplegger;E. W. Vaandering;R. Vidal;A. Whitbeck;J. Whitmore;F. Yang;D. Acosta;P. Avery;D. Bourilkov;M. Carver;T. Cheng;D. Curry;S. Das;M. De Gruttola;G. P. 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Dominguez;R. Gonzalez Suarez;J. Keller;D. Knowlton;I. Kravchenko;J. Lazo Flores;S. Malik;F. Meier;G. R. Snow;J. Dolen;A. Godshalk;I. Iashvili;A. Kharchilava;A. Kumar;S. Rappoccio;G. Alverson;E. Barberis;D. Baumgartel;M. Chasco;J. Haley;A. Massironi;D. M. Morse;D. Nash;T. Orimoto;D. Trocino;D. Wood;J. Zhang;K. A. Hahn;A. Kubik;N. Mucia;N. Odell;B. Pollack;A. Pozdnyakov;M. Schmitt;S. Stoynev;K. Sung;M. Velasco;S. Won;A. Brinkerhoff;K. M. Chan;A. Drozdetskiy;M. Hildreth;C. Jessop;D. J. Karmgard;N. Kellams;K. Lannon;W. Luo;S. Lynch;N. Marinelli;T. Pearson;M. Planer;R. Ruchti;N. Valls;M. Wayne;M. Wolf;A. Woodard;L. Antonelli;J. Brinson;B. Bylsma;L. S. Durkin;S. Flowers;C. Hill;R. Hughes;K. Kotov;T. Y. Ling;D. Puigh;M. Rodenburg;G. Smith;C. Vuosalo;B. L. Winer;H. Wolfe;H. W. Wulsin;E. Berry;O. Driga;P. Elmer;P. Hebda;A. Hunt;S. A. Koay;P. Lujan;D. Marlow;T. Medvedeva;M. Mooney;J. Olsen;P. Piroue;X. Quan;H. Saka;D. Stickland;C. Tully;J. S. Werner;S. C. Zenz;A. Zuranski;E. Brownson;H. Mendez;J. E. Ramirez Vargas;E. Alagoz;V. E. Barnes;D. Benedetti;G. Bolla;D. Bortoletto;M. De Mattia;A. Everett;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;D. C. Miner;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;A. Lath;S. Panwalkar;M. Park;R. Patel;V. Rekovic;S. Salur;S. Schnetzer;C. Seitz;S. Somalwar;R. Stone;S. Thomas;P. Thomassen;M. Walker;K. Rose;S. Spanier;A. York;O. Bouhali;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;S. Gollapinni;R. Harr;P. E. Karchin;C. Kottachchi Kankanamge Don;P. Lamichhane;J. Sturdy;D. A. Belknap;D. Carlsmith;M. Cepeda;S. Dasu;S. Duric;E. Friis;R. Hall Wilton;M. Herndon;A. Herve;P. Klabbers;J. Klukas;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;N. Woods
2014
Abstract
A search for supersymmetry through the direct pair production of top squarks, with Higgs (H) or Z bosons in the decay chain, is performed using a data sample of proton–proton collisions at sqrt(s) = 8 TeV collected in 2012 with the CMS detector at the LHC. The sample corresponds to an integrated luminosity of 19.5 fb^{-1}. The search is performed using a selection of events containing leptons and bottom-quark jets. No evidence for a significant excess of events over the standard model background prediction is observed. The results are interpreted in the context of simplified supersymmetric models with pair production of a heavier top-squark mass eigenstate tilde(t)_{2} decaying to a lighter top-squark mass eigenstate tilde(t)_{1} via either tilde(t)_{2} -> H tilde(t)_{1} or tilde(t)_{2} -> Z tilde(t)_{1}, followed in both cases by tilde(t)_{1} -> t tilde(chi)^{0}_{1}, where tilde(chi)^{0}_{1} is an undetected, stable, lightest supersymmetric particle. The interpretation is performed in the region where the mass difference between the tilde(t)_{1} and tilde(chi)^{0}_{1} states is approximately equal to the top-quark mass ( m(tilde(t)_{1}) - m(tilde(chi)^{0}_{1}) =~ m(t) ), which is not probed by searches for direct tilde(t)_{1} squark pair production. The analysis excludes top squarks with masses m(tilde(t)_{2}) < 575 GeV and m(tilde(t)_{1}) < 400 GeV at a 95% confidence level.
V. Khachatryan; A.M. Sirunyan; A. Tumasyan; W. Adam; T. Bergauer; M. Dragicevic; J. Ero; C. Fabjan; M. Friedl; R. Fruhwirth; V.M. Ghete; C. Hartl; N. ...espandi
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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.