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Letzte Einträge:
2011-06-16
11:18
Possible low energy manifestations of strings and gravity / Antoniadis, I (CERN ; Ecole Polytechnique, CPHT)
Lowering the string scale in the TeV region provides a theoretical framework for solving the mass hierarchy problem and unifying all interactions. The apparent weakness of gravity can then be accounted by the existence of large internal dimensions, in the submillimeter region, and transverse to a braneworld where our universe must be confined. [...]
2010 - 16 p. - Published in : J. Phys.: Conf. Ser. 222 (2010) 012001
In : 1st Mediterranean Conference on Classical and Quantum Gravity, Crete, Greece, 14 - 18 Sep 2009, pp.012001

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2011-05-24
10:56
Alternative electroweak symmetry breaking models / Grojean, C (CERN ; Saclay)
CERN-PH-TH-2010-219. - 2010. - 8 p.
Fulltext

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2011-05-23
17:30
Possible low energy manifestations of strings and gravity / Antoniadis, I (CERN ; Ecole Polytechnique, CPHT)
Lowering the string scale in the TeV region provides a theoretical framework for solving the mass hierarchy problem and unifying all interactions. The apparent weakness of gravity can then be accounted by the existence of large internal dimensions, in the submillimeter region, and transverse to a braneworld where our universe must be confined. [...]
2010 - 12 p. - Published in : Int. J. Mod. Phys. D 19 (2010) 1339-1350

In : 4th International Workshop on Astronomy and Relativistic Astrophysics, Maresias, Brazil, 4 - 8 Oct 2009, pp.1339-1350

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2011-05-23
17:30
Physics from extra dimensions / Antoniadis, I (CERN)
2010 - 12 p. - Published in : J. Phys.: Conf. Ser. 259 (2010) 012013

In : 16th International Symposium on Particles, Strings and Cosmology, Valencia, Spain, 19 - 23 Jul 2010, pp.012013

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2011-05-19
17:48
Aspects of string phenomenology / Antoniadis, I (CERN)
2011 - 14 p. - Published in : Int. J. Mod. Phys. A 25 (2010) 4727-4740
In : Conference in Honor of Conference Murray Gell-Mann's 80th Birthday: Quantum Mechanics, Elementary Particles, Quantum Cosmology and Complexity, Nanyang Executive Centre, NTU, Singapore, 24 – 26 Feb 2010, pp.234-246

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2011-05-19
13:28
FCNC Effects in a Minimal Theory of Fermion Masses / Buras, Andrzej J (Munich, Tech. U. ; TUM-IAS, Munich) ; Grojean, Christophe (CERN ; Saclay, SPhT) ; Pokorski, Stefan (Warsaw U. ; CERN ; TUM-IAS, Munich) ; Ziegler, Robert (Munich, Tech. U. ; TUM-IAS, Munich)
As a minimal theory of fermion masses we extend the SM by heavy vectorlike fermions, with flavor-anarchical Yukawa couplings, that mix with chiral fermions such that small SM Yukawa couplings arise from small mixing angles. This model can be regarded as an effective description of the fermionic sector of a large class of existing flavor models and thus might serve as a useful reference frame for a further understanding of flavor hierarchies in the SM. [...]
arXiv:1105.3725; CERN-PH-TH-2011-117; FLAVOUR(267104)-ERC-1; TUM-HEP-807-11.- 2011 - Published in : J. High Energy Phys. 08 (2011) 028 Springer Open Access article: PDF; External link: Preprint

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2011-05-18
13:27
Non-perturbative transitions among intersecting-brane vacua / Angelantonj, Carlo ; Condeescu, Cezar ; Dudas, Emilian ; Pradisi, Gianfranco
We investigate the transmutation of D-branes into Abelian magnetic backgrounds on the world-volume of higher-dimensional branes, within the framework of global models with compact internal dimensions. The phenomenon, T-dual to brane recombination in the intersecting-brane picture, shares some similarities to inverse small-instanton transitions in non-compact spaces, though in this case the Abelian magnetic background is a consequence of the compactness of the internal manifold, and is not ascribed to a zero-size non-Abelian instanton growing to maximal size. [...]
arXiv:1105.3465.- 2011 - Published in : J. High Energy Phys. 07 (2011) 123 External link: Preprint

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2011-05-18
13:27
On Fluxed Instantons and Moduli Stabilisation in IIB Orientifolds and F-theory / Grimm, Thomas W ; Kerstan, Max ; Palti, Eran ; Weigand, Timo
We study the superpotential induced by Euclidean D3-brane instantons carrying instanton flux, with special emphasis on its significance for the stabilisation of Kahler moduli and Neveu-Schwarz axions in Type IIB orientifolds. [...]
arXiv:1105.3193. - 2011.
Preprint

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2011-05-17
13:12
Forward-backward asymmetries of the bottom and top quarks in warped extra-dimensional models: LHC predictions from the LEP and Tevatron anomalies / Djouadi, A (CERN ; Orsay, LPT) ; Moreau, G (Orsay, LPT) ; Richard, F (Orsay, LAL)
Within the paradigm of warped extra dimensions, third generation quarks are expected to be the most sensitive to effects beyond the Standard Model. The anomalies observed at the LEP and Tevatron colliders in the forward-backward asymmetries of the bottom (A_FB^b) and top (A_FB^t) quarks can thus be seen as early signatures of warped extra-dimensional scenarios. [...]
arXiv:1105.3158; CERN-PH-TH-2011-114; LPT-ORSAY-11-40.- 2011 - Published in : Phys. Lett. B 701 (2011) 458-464 External link: Preprint

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2011-05-17
13:12
Mapping Anomalous Currents in Supersymmetric Dualities / Abel, Steven (Durham U., IPPP ; CERN) ; Buican, Matthew (CERN) ; Komargodski, Zohar (Princeton, Inst. Advanced Study ; Weizmann Inst.)
In many strongly-coupled systems, the infrared dynamics is described by different degrees of freedom from the ultraviolet. It is then natural to ask how operators written in terms of the microscopic variables are mapped to operators composed of the macroscopic ones. [...]
arXiv:1105.2885; CERN-PH-TH-2011-112.- 2011 - Published in : Phys. Rev. D 84 (2011) 045005 APS Published version, local copy: PDF; External link: Preprint

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MassTeV (Mass hierarchy and particle physics at the TeV scale) is co-funded by the European Commission within the Framework Programme 7 Ideas Specific Programme, under Grant Agreement no. 226371. Project website: http://grojean.web.cern.ch/grojean/ERC/MassTeVERC.html.