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We consider all relevant dimension six operators to perform a model independent analysis of flavour changing single top production at the LHC.

High Energy Physics - Phenomenology · Physics 2007-05-23 P. M. Ferreira , R. Santos

We study the effects of dimension six effective operators on the production of single top quarks at the LHC. The operator set considered includes terms with effective gluon interactions and four-fermion terms. Analytic expressions for the…

High Energy Physics - Phenomenology · Physics 2008-11-26 P. M. Ferreira , R. Santos

In this work we calculate the effects of the electroweak flavour changing neutral currents dimension six effective operators on single top production at the LHC. These results are then combined with previous ones we have obtained for the…

High Energy Physics - Phenomenology · Physics 2009-01-21 R. A. Coimbra , P. M. Ferreira , R. B. Guedes , O. Oliveira , A. Onofre , R. Santos , Miguel Won

We study the effects of a set of dimension six flavor changing effective operators on several processes of production of top quarks at the LHC. Namely, top anti-top production and associated production of a top and a gauge or Higgs boson.…

High Energy Physics - Phenomenology · Physics 2008-11-26 P. M. Ferreira , R. Santos

We study the combined effects of both strong and electroweak dimension six effective operators on flavour changing top quark physics at the LHC. Analytic expressions for the cross sections and decay widths of several flavour changing…

High Energy Physics - Phenomenology · Physics 2008-11-26 P. M. Ferreira , R. B. Guedes , R. Santos

In this thesis we discuss the combined effects of strong and electroweak FCNC effective operators in top quark physics at the CERN LHC and lepton flavour violation at the ILC with dimension six effective operators.

High Energy Physics - Phenomenology · Physics 2008-11-21 Renato Batista Guedes

If the LHC should fail to observe direct signals for new physics, it may become necessary to look for new physics effects in rare events such as flavour-changing decays of the top quark, which, in the Standard Model, are predicted to be too…

High Energy Physics - Phenomenology · Physics 2016-08-09 Debjyoti Bardhan , Gautam Bhattacharyya , Diptimoy Ghosh , Monalisa Patra , Sreerup Raychaudhuri

Flavour-changing neutral-current interactions of the top quark can be searched for in top-quark pair production with one top quark decaying to an up-type quark and a neutral boson, and they can be searched for in the single production of a…

High Energy Physics - Phenomenology · Physics 2020-04-01 Maura Barros , Nuno Filipe Castro , Johannes Erdmann , Gregor Geßner , Kevin Kröninger , Salvatore La Cagnina , Ana Peixoto

We consider a special class of dimension-six operators which are assumed to be induced by some new physics with typical scales of order \Lambda. This special class are the operators with two quarks which can mediate transitions between…

High Energy Physics - Phenomenology · Physics 2011-04-12 T. Hansmann , T. Mannel

Flavour-changing neutral currents are extremely rare processes in the standard model that can be sensitive to various new physics effects. The summary of the latest experimental results from the LHC experiments is given. Preliminary results…

High Energy Physics - Experiment · Physics 2017-11-09 Kirill Skovpen

The Large Hadron Collider (LHC) will open a new era in high energy physics. The expected large cross section for heavy flavour production in proton-proton collisions at $\sqrt{s}$ = 14 TeV will allow detailed studies of the production…

High Energy Physics - Experiment · Physics 2014-11-20 Alessandro Grelli , Andre Mischke

This review presents flavour related issues in the production and decays of heavy states at LHC, both from the experimental side and from the theoretical side. We review top quark physics and discuss flavour aspects of several extensions of…

High Energy Physics - Phenomenology · Physics 2008-12-18 T. Lari , L. Pape , W. Porod , J. A. Aguilar-Saavedra , F. del Aguila , B. C. Allanach , J. Alwall , Yu. Andreev , D. Aristizabal Sierra , A. Bartl , M. Beccaria , S. Bejar , L. Benucci , S. Bityukov , I. Borjanovic , G. Bozzi , G. Burdman , J. Carvalho , N. Castro , B. Clerbaux , F. de Campos , A. de Gouvea , C. Dennis , A. Djouadi , O. J. P. Eboli , U. Ellwanger , D. Fassouliotis , P. M. Ferreira , R. Frederix , B. Fuks , J. -M. Gerard , A. Giammanco , S. Gopalakrishna , T. Goto , B. Grzadkowski , J. Guasch , T. Hahn , S. Heinemeyer , A. Hektor , M. Herquet , B. Herrmann , K. Hidaka , M. K. Hirsch , K. Hohenwarter-Sodek , W. Hollik , G. W. S. Hou , T. Hurth , A. Ibarra , J. Illana , M. Kadastik , S. Kalinin , C. Karafasoulis , M. Karagoz Unel , T. Kernreiter , M. M. Kirsanov , M. Klasen , E. Kou , C. Kourkoumelis , S. Kraml , N. Krasnikov , F. Krauss , A. Kyriakis , V. Lemaitre , G. Macorini , M. B. Magro , W. Majerotto , F. Maltoni , R. Mehdiyev , M. Misiak , F. Moortgat , G. Moreau , M. Mühlleitner , M. Muntel , A. Onofre , E. Ozcan , F. Palla , L. Panizzi , L. Pape , S. Penaranda , R. Pittau , G. Polesello , A. Pukhov , M. Raidal , A. R. Raklev , L. Rebane , F. M. Renard , D. Restrepo , Z. Roupas , R. Santos , S. Schumann , G. Servant , F. Siegert , P. Skands , P. Slavich , J. Sola , M. Spira , S. Sultansoy , A. Toropin , A. Tricomi , J. Tseng , G. Unel , J. W. F. Valle , F. Veloso , A. Ventura , G. Vermisoglou , C. Verzegnassi , A. Villanova del Moral , G. Weiglein , M. Yilmaz

Motivated by recently observed anomalies in the flavour sector, we analyse the potential of measurements of top quarks at the Large Hadron Collider (LHC) to provide complementary constraints on interactions that shape low-energy precision…

High Energy Physics - Phenomenology · Physics 2025-03-13 Oliver Atkinson , Christoph Englert , Matthew Kirk , Gilberto Tetlalmatzi-Xolocotzi

Flavour physics has a long tradition of paving the way for direct discoveries of new particles and interactions. Results over the last decade have placed stringent bounds on the parameter space of physics beyond the Standard Model. Early…

High Energy Physics - Experiment · Physics 2015-06-04 Marco Gersabeck , Vladimir V. Gligorov , Nicola Serra

Recent results from RHIC and first measurements from the ALICE experiment at the CERN-Large Hadron Collider (LHC) on open heavy-flavour are presented. We focus on RHIC measurements of single electrons and jet-like heavy-flavour particle…

Nuclear Experiment · Physics 2011-07-15 Andre Mischke

Contact interactions are the low-energy footprints of New Physics, so ideally, constraints upon them should be as generic and model independent as possible. Hadron colliders search for four-quark contact interactions with incident valence…

High Energy Physics - Phenomenology · Physics 2015-06-18 Sacha Davidson , Sébastien Descotes-Genon

Quark contact interactions are an important signal of new physics. We introduce a model in which the presence of a symmetry protects these new interactions from giving large corrections in flavor changing processes at low energies. This…

High Energy Physics - Phenomenology · Physics 2015-06-03 F. Bazzocchi , U. De Sanctis , M. Fabbrichesi , A. Tonero

The LHC will have unprecedented sensitivity to flavor-changing neutral current (FCNC) top quark decays, whose observation would be a clear sign of physics beyond the standard model. Although many details of top flavor violation are model…

High Energy Physics - Phenomenology · Physics 2009-01-22 Patrick J. Fox , Zoltan Ligeti , Michele Papucci , Gilad Perez , Matthew D. Schwartz

Heavy flavour physics provides excellent opportunities to indirectly search for new physics at very high energy scales and to study hadron properties for deep understanding of the strong interaction. The LHCb experiment has been playing a…

High Energy Physics - Experiment · Physics 2023-03-23 Shanzhen Chen , Yiming Li , Wenbin Qian , Zhihong Shen , Yuehong Xie , Zhenwei Yang , Liming Zhang , Yanxi Zhang

We consider the phenomenology at the Large Hadron Collider of new heavy vector-like quarks which couple mainly to the third generation quarks via Yukawa interactions, with special emphasis on non-standard doublet representations which are…

High Energy Physics - Phenomenology · Physics 2015-05-30 Giacomo Cacciapaglia , Aldo Deandrea , Naveen Gaur , Daisuke Harada , Yasuhiro Okada , Luca Panizzi
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