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1421“…Extending our work, we study Symanzik improvement of the extended theory to understand the pattern of discretization effects linear in the lattice spacing, a, which are present even if the lattice fermion action exactly preserves chiral symmetry. …”
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1422“…When the lowest-dimensional primary is a fermion, we argue that the scaling must always be faster than $r^{-6\Delta_f}$. …”
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1423“…We use a general technique based on unitary transformation mapping the Fermion operators relative to bare nucleons into quasi-particle operators relative to dressed nucleons. …”
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1424“…The program {\tt TOPAZ0} is designed for computing Z^0 parameters, de-convoluted and QED-dressed cross sections and forward-backward asymmetries of e^+ e^- annihilation into fermion pairs and of Bhabha scattering around the Z^0 peak, over both a completely inclusive experimental set-up and a realistic one, i.e. with cuts on acollinearity, energy or invariant mass and angular acceptance of the outgoing fermions. …”
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1425“…The B$_{3}$− L$_{2}$Z′ model may explain some gross features of the fermion mass spectrum as well as b → sℓℓ anomalies. …”
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1426“…This work deals with the computation of electron pair correction to small angle Bhabha scattering, in order to contribute to the improvement of luminometry precision at LEP/SLC below 0.1% theoretical accuracy. The exact QED four-fermion matrix element for $e^+e^-\to e^+e^-e^+e^-$, including all diagrams and mass terms, is computed and different Feynman graph topologies are studied to quantify the error of approximate calculations present in the literature. …”
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1427“…Extracting the contribution of massless modes, we are left with dimension-six four-fermion operators which in general receive contributions from three different sources: exchange of massive Kaluza--Klein excitations, winding modes and string oscillator states. …”
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1428por Freitas, A., Kalinowski, J., Ananthanarayan, B., Bartl, A., Blair, G.A., Blochinger, C., Boos, E., Brandenburg, A., Datta, A., Djouadi, A., Fraas, H., Guasch, J., Hesselbach, S., Hidaka, K., Hollik, W., Kernreiter, T., Maniatis, M., von Manteuffel, A., Martyn, H.U., Miller, D.J., Moortgat-Pick, Gudrid A., Muhlleitner, M., Nauenberg, U., Kluge, Hannelies, Porod, W., Sola, J., Sopczak, A., Stahl, A., Weber, M.M., Zerwas, P.M.“…At future e+- e- linear colliders, the event rates and clean signals of scalar fermion production - in particular for the scalar leptons - allow very precise measurements of their masses and couplings and the determination of their quantum numbers. …”
Publicado 2002
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1429por Mccullough, Matthew“…Consider a general 4D action involving scalar (φ), fermion (ψ), and vector gauge fields (A µ), normalised such that all kinetic terms and commutation relations are canonical. …”
Publicado 2017
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1430“…Understanding the nature of local–itinerant transition of strongly correlated electrons is one of the central problems in condensed matter physics. Heavy fermion systems describe the f-electron delocalization through Kondo interactions with conduction electrons. …”
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Online Artículo Texto -
1431por Jauregui, Luis A., Pettes, Michael T., Rokhinson, Leonid P., Shi, Li, Chen, Yong P.“…Transport due to spin-helical massless Dirac fermion surface state is of paramount importance to realize various new physical phenomena in topological insulators, ranging from quantum anomalous Hall effect to Majorana fermions. …”
Publicado 2015
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1432por Xu, Su-Yang, Belopolski, Ilya, Sanchez, Daniel S., Zhang, Chenglong, Chang, Guoqing, Guo, Cheng, Bian, Guang, Yuan, Zhujun, Lu, Hong, Chang, Tay-Rong, Shibayev, Pavel P., Prokopovych, Mykhailo L., Alidoust, Nasser, Zheng, Hao, Lee, Chi-Cheng, Huang, Shin-Ming, Sankar, Raman, Chou, Fangcheng, Hsu, Chuang-Han, Jeng, Horng-Tay, Bansil, Arun, Neupert, Titus, Strocov, Vladimir N., Lin, Hsin, Jia, Shuang, Hasan, M. Zahid“…Weyl semimetals are expected to open up new horizons in physics and materials science because they provide the first realization of Weyl fermions and exhibit protected Fermi arc surface states. …”
Publicado 2015
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1433“…We extend this scaling relation to different systems and found that it holds for other cuprate, pnictide and heavy fermion superconductors as well, regardless of the significant differences in the strength of electronic correlations, transport directions, and doping levels. …”
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1434por Boulet, Pascal, de Weerd, Marie-Cécile, Krnel, Mitja, Vrtnik, Stanislav, Jagličić, Zvonko, Dolinšek, Janez“…[Image: see text] In a search for unconventional heavy-Fermion compounds with the localized 4f moments distributed quasiperiodically instead of a conventional distribution on a regular, translationally periodic lattice, we have successfully synthesized a stable Ce(3)Au(13)Ge(4) Tsai-type 1/1 quasicrystalline approximant of the off-stoichiometric composition Ce(3+x)Au(13+y)Ge(4+z) (x = 0.17, y = 0.49, z = 1.08) and determined its structural model. …”
Publicado 2021
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1435“…We explain the radiation hardness of graphene by the topological non-triviality of the pseudo-Majorana fermion configurations comprising the graphene charge carriers.…”
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1436“…The simplest extension of the Standard Model with such fermion singlets is the addition of right-handed sterile neutrinos with small Majorana masses. …”
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1437“…We find that generically the tuning of this class of models is worsen in the anarchic case due to the contributions from the additional fermion resonances. We show that, even in the presence of custodial symmetry, large top flavor violating rate are naturally expected. …”
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1438“…A second model with MSSM matter in the SU(5)-symmetric bulk preserves both the SU(5) explanation of fermion quantum numbers as well as gauge-coupling unification. …”
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1439por Varzielas, Ivo de Medeiros“…We consider an unified model with a family symmetry and extended seesaw, and obtain viable fermion masses and mixing (leptonic mixing is close to tri-bi-maximal).…”
Publicado 2009
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1440por Watts, Gordon“…Many models can contain final states like this: Stealth SUSY, Baryogenesis, and a simple hidden sector scalar that decays to heavy fermion jets. Performance of the ATLAS Calorimeter Ratio trigger along with tools and preliminary results are shown.…”
Publicado 2016
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