- Sussex Research Online
... previous attempts to pin down 3 ðMZ Þ or sin2 W by demanding gauge coupling unification seem invalid without further knowledge about c. Also, claiming that SUSY unification is favored by, e.g., LEP data seems farfetched. Without actually observing proton decay, it is hard to claim convincing evide ...
... previous attempts to pin down 3 ðMZ Þ or sin2 W by demanding gauge coupling unification seem invalid without further knowledge about c. Also, claiming that SUSY unification is favored by, e.g., LEP data seems farfetched. Without actually observing proton decay, it is hard to claim convincing evide ...
A VIEW OF MATHEMATICS Alain CONNES Mathematics is the
... In dimension n = 2, Desargues’s theorem is no longer a consequence of the above axioms and one has to add it to the above four axioms. The Desarguian geometries of dimension n are exactly the projective spaces Pn (K) of a (not necessarily commutative) field K. They are in this way in perfect duality ...
... In dimension n = 2, Desargues’s theorem is no longer a consequence of the above axioms and one has to add it to the above four axioms. The Desarguian geometries of dimension n are exactly the projective spaces Pn (K) of a (not necessarily commutative) field K. They are in this way in perfect duality ...
Operator Analysis for the Higgs Potential and Cosmological Bound
... effects of new physics being accounted for by adding to the standard model lagrangian a set of local operators. In this brief report we discuss the constraints on the Higgs mass and the new physics scale due to electroweak baryogenesis. We will show that the problem of baryon washout can be solved i ...
... effects of new physics being accounted for by adding to the standard model lagrangian a set of local operators. In this brief report we discuss the constraints on the Higgs mass and the new physics scale due to electroweak baryogenesis. We will show that the problem of baryon washout can be solved i ...
Particle Physics what do we know?
... – Standard Model doesn’t work at all energies – Standard Model does not include gravity – we haven’t found the Higgs yet... ...
... – Standard Model doesn’t work at all energies – Standard Model does not include gravity – we haven’t found the Higgs yet... ...
Four levels of complexity in mathematics and physics
... death, and he didn’t know that he already gave maximal possible contribution to ToE, and was still working, in place to receive maximal deserved applause. It may be useful to remember another thinker who may be mentioned with some insight in the future further than people around him, e.g., Newton, a ...
... death, and he didn’t know that he already gave maximal possible contribution to ToE, and was still working, in place to receive maximal deserved applause. It may be useful to remember another thinker who may be mentioned with some insight in the future further than people around him, e.g., Newton, a ...
Phil Anderson And Gauge Symmetry Breaking
... between particles and fields – or in condensed matter physics, between bare electrons and nuclei and the emergent quasi-particles that give a more useful description at long distances. Schwinger is saying that the situation that prevails in QED – in which the electron field corresponds to electrons, ...
... between particles and fields – or in condensed matter physics, between bare electrons and nuclei and the emergent quasi-particles that give a more useful description at long distances. Schwinger is saying that the situation that prevails in QED – in which the electron field corresponds to electrons, ...
Making FORS2 fit for exoplanet observations (again)
... decay experiments M. Sistia,b,∗, D. R. Artusac,e , F. T. Avignone IIIc , O. Azzolinid , M. Balatae , T. I. Banksf,g,e , G. Barih , J. Beemani , F. Bellinij,k , A. Bersanim , M. Biassonia,b , C. Brofferioa,b , C. Buccie , X. Z. Cain , A. Camachod , A. Caminatam , L. Canonicae , X. G. Caon , S. Capell ...
... decay experiments M. Sistia,b,∗, D. R. Artusac,e , F. T. Avignone IIIc , O. Azzolinid , M. Balatae , T. I. Banksf,g,e , G. Barih , J. Beemani , F. Bellinij,k , A. Bersanim , M. Biassonia,b , C. Brofferioa,b , C. Buccie , X. Z. Cain , A. Camachod , A. Caminatam , L. Canonicae , X. G. Caon , S. Capell ...
Harmony of Scattering Amplitudes: From gauge theory
... This talk will present some recent developments in understanding scattering amplitudes in gauge and gravity theories. • Harmony: Examples of remarkable relations in gauge and gravity theories. • QCD: Brief look at applications of new ideas to LHC physics • Supersymmetric gauge theory: resummation of ...
... This talk will present some recent developments in understanding scattering amplitudes in gauge and gravity theories. • Harmony: Examples of remarkable relations in gauge and gravity theories. • QCD: Brief look at applications of new ideas to LHC physics • Supersymmetric gauge theory: resummation of ...
Unparticle_Dark_Matter_(GUT07)
... • Unparticle is a hidden conformal sector which couples to the SM particles only through the higher dimensional operators. • Spectral function of the unparticle has very unusual behavior! Because of the conformal invariance in the unparticle sector, unparticle propagator and the phase space are comp ...
... • Unparticle is a hidden conformal sector which couples to the SM particles only through the higher dimensional operators. • Spectral function of the unparticle has very unusual behavior! Because of the conformal invariance in the unparticle sector, unparticle propagator and the phase space are comp ...
Structural( biology( at( the( single( particle( level:( imaging( tobacco
... New high intensity sources for ultra-cold neutrons are coming into operation having the potential to exceed contemporary source strengths by several orders of magnitude. This priority programme wants to exploit these new technologies and implement novel concepts as a source of neutron decay products ...
... New high intensity sources for ultra-cold neutrons are coming into operation having the potential to exceed contemporary source strengths by several orders of magnitude. This priority programme wants to exploit these new technologies and implement novel concepts as a source of neutron decay products ...
non-relativistic Breit
... (1989–94) (and at the SLC ) they used e+ e− → Z 0 → fermions. The corresponding production of W , eg. e− ν̄e → W − → fermions is not technically feasible since we cannot create a beam of neutrinos which is well enough focused. Instead at LEP2 (1996–2000) they used the processes e+ e− → W + W − (exch ...
... (1989–94) (and at the SLC ) they used e+ e− → Z 0 → fermions. The corresponding production of W , eg. e− ν̄e → W − → fermions is not technically feasible since we cannot create a beam of neutrinos which is well enough focused. Instead at LEP2 (1996–2000) they used the processes e+ e− → W + W − (exch ...
Ten Lectures on the ElectroWeak Interactions
... N(1, 1)0 , Ψ breaks down into 5 irreducible representations of the gauge group, i.e. each generator splits into 5 blocks on the diagonal. The same is true, therefore, for the Dµ appearing in the fermionic term of Lmin , which splits in a sum of 5 independent pieces ...
... N(1, 1)0 , Ψ breaks down into 5 irreducible representations of the gauge group, i.e. each generator splits into 5 blocks on the diagonal. The same is true, therefore, for the Dµ appearing in the fermionic term of Lmin , which splits in a sum of 5 independent pieces ...
Introduction and Theoretical Background
... and their interactions. In fact, the SU (3) gauge symmetry coupled to the quarks correctly describes the strong interaction, with the eight SU (3) gauge fields associated to the different colored states of the gluon. Gluons have been observed experimentally [6, 7] and interact with quarks as predicted ...
... and their interactions. In fact, the SU (3) gauge symmetry coupled to the quarks correctly describes the strong interaction, with the eight SU (3) gauge fields associated to the different colored states of the gluon. Gluons have been observed experimentally [6, 7] and interact with quarks as predicted ...
arXiv:1501.03541v1 [hep
... the properties we actually wish to measure. For instance, the shape and rate information that are the ultimate goal of WP1 correspond to the colour axis on the the right-hand plot, but the particle bands are sufficiently clear that their shape and location can be considered separately from the colou ...
... the properties we actually wish to measure. For instance, the shape and rate information that are the ultimate goal of WP1 correspond to the colour axis on the the right-hand plot, but the particle bands are sufficiently clear that their shape and location can be considered separately from the colou ...
arXiv:1501.06883v1 [nucl
... sensitivities of X, Y, Z piezomanipulators, respectively (to take into consideration a possible nonorthogonality of X, Y piezomanipulators, an obliquity angle should be additionally determined) [1, 2, 3, 4]. Because of piezomanipulator’s nonlinearity [5, 6] and spurious crosstalk couplings, the prob ...
... sensitivities of X, Y, Z piezomanipulators, respectively (to take into consideration a possible nonorthogonality of X, Y piezomanipulators, an obliquity angle should be additionally determined) [1, 2, 3, 4]. Because of piezomanipulator’s nonlinearity [5, 6] and spurious crosstalk couplings, the prob ...
Graduate Course Descriptions - UC Berkeley Physics
... Yang-Mills gauge theories: BRST quantization of gauge theories; nonperturbative dynamics; renormalization group; basics of effective field theory; large N; solitons; instantons; dualities. Selected current topics. (SP) 233A. Standard Model and Beyond I. (4) Three hours of lecture and one hour of dis ...
... Yang-Mills gauge theories: BRST quantization of gauge theories; nonperturbative dynamics; renormalization group; basics of effective field theory; large N; solitons; instantons; dualities. Selected current topics. (SP) 233A. Standard Model and Beyond I. (4) Three hours of lecture and one hour of dis ...
here
... Mht, one fits the correct top mass, despite the much larger entry demanded by the Z mass. The EW fit then tells us what the mass of the new top-like quark should be! This depends highly on the value of mt! ...
... Mht, one fits the correct top mass, despite the much larger entry demanded by the Z mass. The EW fit then tells us what the mass of the new top-like quark should be! This depends highly on the value of mt! ...
The Standard Model and its Simple Extensions
... • A measurement of these couplings thus probes the gauge structure itself • The WWZ and WWγ are usually described and terms of 5 parameters where only 3 can be measured independently at ...
... • A measurement of these couplings thus probes the gauge structure itself • The WWZ and WWγ are usually described and terms of 5 parameters where only 3 can be measured independently at ...
Duality, Phases, Spinors and Monopoles in SO (N) and Spin (N
... of the spinor and monopole under flavor groups of the two theories. It will also become clear in this section that monopoles only arise in the B theory when all of the spinors in the A theory are massive, consistent with the discussion of section 2. 3.1. The massive spinor of Spin(8) Consider, as th ...
... of the spinor and monopole under flavor groups of the two theories. It will also become clear in this section that monopoles only arise in the B theory when all of the spinors in the A theory are massive, consistent with the discussion of section 2. 3.1. The massive spinor of Spin(8) Consider, as th ...
P10_Ferreira
... Coupling to fermions MODEL I: Only Φ2 couples to fermions. MODEL II: Φ2 couples to up-quarks, Φ1 to down quarks and leptons. ...
... Coupling to fermions MODEL I: Only Φ2 couples to fermions. MODEL II: Φ2 couples to up-quarks, Φ1 to down quarks and leptons. ...
Studies of effective theories beyond the Standard Model
... The vast majority of all experimental results in particle physics can be described by the Standard Model (SM) of particle physics. However, neither the existence of neutrino masses nor the mixing in the leptonic sector, which have been observed, can be described within this model. In fact, the model ...
... The vast majority of all experimental results in particle physics can be described by the Standard Model (SM) of particle physics. However, neither the existence of neutrino masses nor the mixing in the leptonic sector, which have been observed, can be described within this model. In fact, the model ...
200 GeV
... ● model independent determination of SUSY parameters ● determination of SUSY breaking mechanism ● extrapolation to GUT scale possible ...
... ● model independent determination of SUSY parameters ● determination of SUSY breaking mechanism ● extrapolation to GUT scale possible ...
URL - StealthSkater
... 2. Twistors and algebraic geometry connection emerge naturally in TGD framework H=M4×CP2 and the reduction of all on mass shell states to bound states of massless states imply that twistor approach is the natural description of scattering amplitudes in TGD framework (see "Yangian Symmetry, Twistors, ...
... 2. Twistors and algebraic geometry connection emerge naturally in TGD framework H=M4×CP2 and the reduction of all on mass shell states to bound states of massless states imply that twistor approach is the natural description of scattering amplitudes in TGD framework (see "Yangian Symmetry, Twistors, ...
An Exceptionally Simple Theory of Everything
""An Exceptionally Simple Theory of Everything"" is a physics preprint proposing a basis for a unified field theory, very often referred to as ""E8 Theory"", which attempts to describe all known fundamental interactions in physics and to stand as a possible theory of everything. The paper was posted to the physics arXiv by Antony Garrett Lisi on November 6, 2007, and was not submitted to a peer-reviewed scientific journal. The title is a pun on the algebra used, the Lie algebra of the largest ""simple"", ""exceptional"" Lie group, E8. The paper's goal is to describe how the combined structure and dynamics of all gravitational and Standard Model particle fields, including fermions, are part of the E8 Lie algebra. In the paper, Lisi states that all three generations of fermions do not directly embed in E8 with correct quantum numbers and spins, but that they might be described via a triality transformation, noting that the theory is incomplete and that a correct description of the relationship between triality and generations, if it exists, awaits a better understanding.The theory received accolades from a few physicists amid a flurry of media coverage, but also met with widespread skepticism. Scientific American reported in March 2008 that the theory was being ""largely but not entirely ignored"" by the mainstream physics community, with a few physicists picking up the work to develop it further.In a follow-up paper, Lee Smolin proposed a spontaneous symmetry breaking mechanism for obtaining the classical action in Lisi's model, and speculated on the path to its quantization.In July 2009, Jacques Distler and Skip Garibaldi published a critical paper in Communications in Mathematical Physics called ""There is no 'Theory of Everything' inside E8"", arguing that Lisi's theory, and a large class of related models, cannot work. They offer a direct proof that it is impossible to embed all three generations of fermions in E8, or to obtain even the one-generation Standard Model without the presence of an antigeneration. In response to Distler and Garibaldi's paper, Lisi argued, in a new paper ""An Explicit Embedding of Gravity and the Standard Model in E8"", peer reviewed and published in a conference proceedings, that some assumptions about fermion embeddings are unnecessary and that the antigeneration is not by itself a problem sufficient to rule out the one-generation Standard Model. In December 2010 and May 2011, Lisi wrote in the popular magazine Scientific American a feature article on the E8 Theory of Everything and an entry in the blog section of the magazine addressing some of the criticism of his theory and how it has progressed, noting that the theory is still incomplete and makes only tenuous predictions, with the three generation issue remaining as a significant problem.