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CERN Document Server 92 Datensätze gefunden  1 - 10nächsteEnde  gehen zum Datensatz: Die Suche hat 0.57 Sekunden gedauert. 
1.
Minimal scalar-less matter-coupled supergravity / Dall'Agata, Gianguido (Padua U. ; Ecole Polytechnique, CPHT ; INFN, Padua) ; Ferrara, Sergio (CERN ; Frascati ; UCLA) ; Zwirner, Fabio (CERN ; INFN, Padua ; Padua U.)
We build the minimal supergravity model where the nilpotent chiral goldstino superfield is coupled to a chiral matter superfield, realising a different non-linear representation through a mixed nilpotency constraint. The model describes the spontaneous breaking of local supersymmetry in the presence of a generically massive Majorana fermion, but in the absence of elementary scalars. [...]
arXiv:1509.06345; CERN-PH-TH-2015-222; CPHT-RR037.0915; DFPD-2015-TH-21; CERN-PH-TH-2015-222; CPHT-RR037.0915; DFPD-2015-TH-21.- Geneva : CERN, 2016-01-10 - 4 p. - Published in : Phys. Lett. B 752 (2016) 263-266 Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: PDF; External link: Preprint
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2.
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New Physics, Dark Matter and the LHC / Prof. ZWIRNER, Fabio (speaker) (University of Padova and CERN)
2015 - 3236. Conferences; AMS DAYS AT CERN - The Future of Cosmic Ray Physics and Latest Results External links: Talk details; Event details In : AMS DAYS AT CERN - The Future of Cosmic Ray Physics and Latest Results
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3.
Robust collider limits on heavy-mediator Dark Matter / Racco, Davide (Geneva U., Dept. Theor. Phys. ; Geneva U., CAP) ; Wulzer, Andrea (INFN, Padua ; Padua U.) ; Zwirner, Fabio (INFN, Padua ; Padua U. ; CERN)
We discuss how to consistently use Effective Field Theories (EFTs) to set universal bounds on heavy-mediator Dark Matter at colliders, without prejudice on the model underlying a given effective interaction. We illustrate the method for a Majorana fermion, universally coupled to the Standard Model quarks via a dimension-6 axial-axial four-fermion operator. [...]
arXiv:1502.04701; CERN-PH-TH-2015-014; DFPD-2015-TH-05; CERN-PH-TH-2015-014; DFPD-2015-TH-05.- Geneva : CERN, 2015-05-04 - 31 p. - Published in : JHEP 05 (2015) 009 Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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4.
On sgoldstino-less supergravity models of inflation / Dall'Agata, Gianguido (Padua U. ; INFN, Padua) ; Zwirner, Fabio (Padua U. ; INFN, Padua ; CERN)
We go a step further in the search for a consistent and realistic supergravity model of large-field inflation by building a class of models with the following features: during slow-roll, all the scalar fields other than the inflaton are frozen by large inflaton-dependent masses or removed from the spectrum; at the end of inflation, supersymmetry is spontaneously broken with naturally vanishing classical vacuum energy. We achieve this by combining some geometrical properties of the Kaehler potential with the consistent use of a single nilpotent chiral superfield, in one-to-one correspondence with the supersymmetry-breaking direction in field space at the vacuum..
arXiv:1411.2605; CERN-PH-TH-2014-199; DFPD-2014-TH-16; CERN-PH-TH-2014-199; DFPD-2014-TH-16.- 2014-12-30 - 19 p. - Published in : JHEP 12 (2014) 172 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; Springer Open Access article : PDF; External link: Preprint
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5.
Non-universal minimal Z' models: present bounds and early LHC reach / Salvioni, Ennio (Padua U. ; INFN, Padua) ; Strumia, Alessandro (Pisa U. ; INFN, Pisa ; CERN) ; Villadoro, Giovanni (CERN) ; Zwirner, Fabio (Padua U. ; INFN, Padua)
We consider non-universal 'minimal' Z' models, whose additional U(1) charge is a non-anomalous linear combination of the weak hypercharge Y, the baryon number B and the partial lepton numbers (L_e, L_mu, L_tau), with no exotic fermions beyond three standard families with right-handed neutrinos. We show that the observed pattern of neutrino masses and mixing can be fully reproduced by a gauge-invariant renormalizable Lagrangian, and flavor-changing neutral currents in the charged lepton sector are suppressed by a GIM mechanism. [...]
arXiv:0911.1450; CERN-PH-TH-2009-212; DFPD-09-TH-22; CERN-PH-TH-2009-212; DFPD-09-TH-22.- 2010 - 29 p. - Published in : JHEP 03 (2010) 010 Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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6.
Minimal Z' models : present bounds and early LHC reach / Salvioni, Ennio (Padua U. ; INFN, Padua) ; Villadoro, Giovanni (CERN) ; Zwirner, Fabio (Padua U. ; INFN, Padua)
We consider `minimal' Z' models, whose phenomenology is controlled by only three parameters beyond the Standard Model ones: the Z' mass and two effective coupling constants. They encompass many popular models motivated by grand unification, as well as many arising in other theoretical contexts. [...]
arXiv:0909.1320; CERN-PH-TH-2009-160; DFPD-09-TH-17; CERN-PH-TH-2009-160; DFPD-09-TH-17.- 2009 - 25 p. - Published in : JHEP 11 (2009) 068 Fulltext: arXiv:0909.1320 - PDF; JHEP11(2009)068 - PDF; SISSA/IOP Open Access article: PDF; External link: Preprint
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7.
Type-IIA flux compactifications and N=4 gauged supergravities / Dall'Agata, Gianguido (Padua U. ; INFN, Padua) ; Villadoro, Giovanni (CERN) ; Zwirner, Fabio (Padua U. ; INFN, Padua)
We establish the precise correspondence between Type-IIA flux compactifications preserving an exact or spontaneously broken N=4 supersymmetry in four dimensions, and gaugings of their effective N=4 supergravities. We exhibit the explicit map between fluxes and Bianchi identities in the higher-dimensional theory and generalized structure constants and Jacobi identities in the reduced theory, also detailing the origin of gauge groups embedded at angles in the duality group. [...]
arXiv:0906.0370; CERN-PH-TH-2009-075; DFPD-09-TH-10; CERN-PH-TH-2009-075; DFPD-09-TH-10.- 2009 - 43 p. - Published in : JHEP 08 (2009) 018 Fulltext: arXiv:0906.0370 - PDF; JHEP08(2009)018 - PDF; SISSA/IOP Open Access article: PDF; External link: Preprint
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8.
Higgs Boson Properties in the Standard Model and its Supersymmetric Extensions / Ellis, John R. (CERN) ; Ridolfi, Giovanni (INFN, Genoa ; Genoa U.) ; Zwirner, Fabio (Padua U. ; INFN, Padua)
We review the realization of the Brout-Englert-Higgs mechanism in the electroweak theory and describe the experimental and theoretical constraints on the mass of the single Higgs boson expected in the minimal Standard Model. We also discuss the couplings of this Higgs boson and its possible decay modes as functions of its unknown mass. [...]
hep-ph/0702114; CERN-PH-TH-2007-012; CERN-PH-TH-2007-012; DFPD-2007-TH-03; GEF-TH-2007-10.- Geneva : CERN, 2007 - 14 p. - Published in : C. R. Phys. 8 (2007) 999-1012 Access to fulltext document: PDF; Fulltext: PDF; External link: Preprint
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9.
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The hunt for the Higgs particle / Zwirner, Fabio (speaker) (University of Padova, I)
With the advent of the LHC, the hunt for the Higgs boson enters its crucial phase. These three lectures will review: the Higgs mechanism; its implementation in the minimal Standard Model; possible alternatives with and without elementary scalar fields; the presently available information on electroweak gauge symmetry breaking and the Higgs particle; the properties of the Higgs boson(s) in the Standard Model and its supersymmetric extensions; the strategies for direct searches at colliders, with emphasis on the LHC, and comments on the possible scenarios that may emerge..
Geneva : CERN, 2007 - 4723. CERN Academic Training Lecture; Regular Lecture Programme Talk Information External links: Talk 27 Feb 2007; Talk 28 Feb 2007; Talk 1 Mar 2007
In : Academic Training Lectures, CERN, Geneva, Switzerland, 1 Sep 2006 - 30 Jun 2007
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10.
The minimal N=4 no-scale model from generalized dimensional reduction / Villadoro, Giovanni (CERN ; Rome U. ; INFN, Rome) ; Zwirner, Fabio (CERN ; Rome U. ; INFN, Rome)
We consider the generalized dimensional reduction of pure ungauged N=4, D=5 supergravity, where supersymmetry is spontaneously broken to N=2 or N=0 with identically vanishing scalar potential. We explicitly construct the resulting gauged D=4 theory coupled to a single vector multiplet, which provides the minimal N=4 realization of a no-scale model. [...]
hep-th/0406185; CERN-PH-TH-2004-109; ROMA-1376-04; CERN-PH-TH-2004-109.- Geneva : CERN, 2004 - 29 p. - Published in : JHEP 07 (2004) 055 Access to fulltext document: PDF; Fulltext: PDF; SISSA/IOP Published version, local copy: PDF; External link: Preprint - Please contact the library if you need to access this document.
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