For Publisher`s use ELECTRON-POSITRON - INFN-LNF
... range of masses of the fermions, the grand unification between the two gauge theories, electroweak and QCD, is not realised and gravity is not incorporated at the quantum level. Several alternative scenarios have been developed for the physics which may emerge beyond the Standard Model as energies a ...
... range of masses of the fermions, the grand unification between the two gauge theories, electroweak and QCD, is not realised and gravity is not incorporated at the quantum level. Several alternative scenarios have been developed for the physics which may emerge beyond the Standard Model as energies a ...
A boost for quantum reality
... Still, Matt Leifer, a physicist at University College London who works on quantum information, says that the theorem tackles a big question in a simple and clean way. He also says that it could end up being as useful as Bell’s theorem, which turned out to have applications in quantum information the ...
... Still, Matt Leifer, a physicist at University College London who works on quantum information, says that the theorem tackles a big question in a simple and clean way. He also says that it could end up being as useful as Bell’s theorem, which turned out to have applications in quantum information the ...
Common problem against B and L genesis and its possible resolution
... X qq, ql • One way decay, no inverse decay ...
... X qq, ql • One way decay, no inverse decay ...
ASTRONOMY 5
... “extensive” space-time dimensions of our Universe, for a total of 11 dimensions in all) exist like an “interior universe” at every point in our fourdimensional spacetime. These “cureld-up” dimensions have not yet been discovered because it would take incredibly small (i.e., energetic) particles to p ...
... “extensive” space-time dimensions of our Universe, for a total of 11 dimensions in all) exist like an “interior universe” at every point in our fourdimensional spacetime. These “cureld-up” dimensions have not yet been discovered because it would take incredibly small (i.e., energetic) particles to p ...
PDF Transparencies
... Dynamical SUSY breaking (DSB) is the idea that supersymmetry is spontaneously broken through nonperturbative effects in an asymptotically free gauge theory. It provides a natural mechanism for generating large mass hierarchies (Witten). In fact, it is the only mechanism of natural SUSY breaking we k ...
... Dynamical SUSY breaking (DSB) is the idea that supersymmetry is spontaneously broken through nonperturbative effects in an asymptotically free gauge theory. It provides a natural mechanism for generating large mass hierarchies (Witten). In fact, it is the only mechanism of natural SUSY breaking we k ...
Elementary Particles in Physics
... deep principle that makes baryon conservation compelling, and it may turn out that baryon conservation is only approximate. The particles with integer spin are called mesons, and they have baryon number B = 0. There are hundreds of different kinds of hadrons, some almost stable and some (known as re ...
... deep principle that makes baryon conservation compelling, and it may turn out that baryon conservation is only approximate. The particles with integer spin are called mesons, and they have baryon number B = 0. There are hundreds of different kinds of hadrons, some almost stable and some (known as re ...
The Standard Model - University of Rochester
... 1897 – J.J. Thomson discovers the electron 1900 – Planck’s idea of energy quantization 1905 – Einstein: Brownian motion suggests atoms (oh, photoelectric effect and relativity too) 1911 – Rutherford, using alpha particles demonstrates small, dense, positive nucleus 1913 – Bohr model of the atom ...
... 1897 – J.J. Thomson discovers the electron 1900 – Planck’s idea of energy quantization 1905 – Einstein: Brownian motion suggests atoms (oh, photoelectric effect and relativity too) 1911 – Rutherford, using alpha particles demonstrates small, dense, positive nucleus 1913 – Bohr model of the atom ...
PDF
... particles, and its orientation is an important degree of freedom. Roughly speaking, the spin of a particle is a contribution to its angular momentum that is not due to its motion but whose correct calculation requires relativistic quantum field theory. Unlike the classical momentum of rotation of a ...
... particles, and its orientation is an important degree of freedom. Roughly speaking, the spin of a particle is a contribution to its angular momentum that is not due to its motion but whose correct calculation requires relativistic quantum field theory. Unlike the classical momentum of rotation of a ...
Coordinate Noncommutativity, Quantum Groups and String Field
... What happens at a cosmological singularity? Does time begin? What is the quantum vacuum for gravitational fields? Is there a future asym. vacuum state? Why are there three large spatial coor.? What is dark energy? What is dark matter? ...
... What happens at a cosmological singularity? Does time begin? What is the quantum vacuum for gravitational fields? Is there a future asym. vacuum state? Why are there three large spatial coor.? What is dark energy? What is dark matter? ...
GPS Timing and Control System of the HAWC Detector. A. U. Abeysekara
... NUHM2 [1, 2]. We would also like to mention that there are several other groups that perform global fits of SUSY using Bayesian as well as frequentist methods. Some recent fits of CMSSM, NUHM1 and NUHM2 may be found in [3–6], whereas results on the pMSSM may be found in [7, 8]. We will soon publish ...
... NUHM2 [1, 2]. We would also like to mention that there are several other groups that perform global fits of SUSY using Bayesian as well as frequentist methods. Some recent fits of CMSSM, NUHM1 and NUHM2 may be found in [3–6], whereas results on the pMSSM may be found in [7, 8]. We will soon publish ...
The Theory of Everything
... that postulated in the standard model of elementary particles right down to the specific phrase ‘‘relevant direction’’ used to describe measurable quantities surviving renormalization. At least in some cases there is thought to be an emergent relativity principle in the bargain (29, 30). The rest of ...
... that postulated in the standard model of elementary particles right down to the specific phrase ‘‘relevant direction’’ used to describe measurable quantities surviving renormalization. At least in some cases there is thought to be an emergent relativity principle in the bargain (29, 30). The rest of ...
transparencies - Indico
... And if we are very lucky, five-dimensional black holes and string states might also appear ...
... And if we are very lucky, five-dimensional black holes and string states might also appear ...
Poster-Okubo - Department of Physics and Astronomy
... spin 1/2 quarks. Gail Hanson observed hadron jets and determined the jet axis by developing and applying the spheric-ity analysis to the hadrons in e+ e? events. She showed that events become more jet?like with increasing energy, contrary to what one expects from a simple phase space production mech ...
... spin 1/2 quarks. Gail Hanson observed hadron jets and determined the jet axis by developing and applying the spheric-ity analysis to the hadrons in e+ e? events. She showed that events become more jet?like with increasing energy, contrary to what one expects from a simple phase space production mech ...
From Maxwell to Higgs - James Clerk Maxwell Foundation
... chosen to sit at some angle in the trough and, when we turn the bottle or hat about its symmetry axis, the lowest energy state chosen by the ball bearing will move with the bottle or hat – it will no longer have the symmetry of the empty bottle or hat. The lowest energy state has ‘spontaneously’ bro ...
... chosen to sit at some angle in the trough and, when we turn the bottle or hat about its symmetry axis, the lowest energy state chosen by the ball bearing will move with the bottle or hat – it will no longer have the symmetry of the empty bottle or hat. The lowest energy state has ‘spontaneously’ bro ...
SpontaneouS Symmetry Breaking in particle phySicS
... (δL contains the effects of confinement and one gluon exchange.) The WS theory resembles the Ginzburg-Landau [17] description of superconductivity, which was shown to follow from the BCS theory by Gor’kov [18]. In the same way the NJL model goes over to the model of Gell-Mann and Levy [19]. If this ...
... (δL contains the effects of confinement and one gluon exchange.) The WS theory resembles the Ginzburg-Landau [17] description of superconductivity, which was shown to follow from the BCS theory by Gor’kov [18]. In the same way the NJL model goes over to the model of Gell-Mann and Levy [19]. If this ...
String Theory
... • The extra dimensions are hidden a la Kaluza, Klein theory (1921) • Supersymmetry is there but broken (somehow) • The fact that these aren’t observed at current scales is in no sense a theoretical problem, the natural scale for such things would be the string scale ie. around the plank scale. • If ...
... • The extra dimensions are hidden a la Kaluza, Klein theory (1921) • Supersymmetry is there but broken (somehow) • The fact that these aren’t observed at current scales is in no sense a theoretical problem, the natural scale for such things would be the string scale ie. around the plank scale. • If ...
here
... • This structure fixes all of the renormalizable interactions of top, and determines what is needed for a complete description of top in the SM. • Mass: linked to the Yukawa coupling (at tree level) through: mt = yt v. • Couplings: gS and e are fixed by gauge invariance. The weak interaction has NC ...
... • This structure fixes all of the renormalizable interactions of top, and determines what is needed for a complete description of top in the SM. • Mass: linked to the Yukawa coupling (at tree level) through: mt = yt v. • Couplings: gS and e are fixed by gauge invariance. The weak interaction has NC ...
The Dimensions of M
... energies together with arbitrarily many tachyons. There is no limit to the number of such processes, thus preventing a perturbative understanding of the theory. An additional problem is that the string states only include bosonic particles. However, it is known that nature certainly contains fermion ...
... energies together with arbitrarily many tachyons. There is no limit to the number of such processes, thus preventing a perturbative understanding of the theory. An additional problem is that the string states only include bosonic particles. However, it is known that nature certainly contains fermion ...
Goldstone Bosons and Chiral Symmetry Breaking in QCD
... uniquely fixed by the symmetry: L = fπ2 Tr(∂µ Σ† ∂ µ Σ). Expanding to second order in the pion fields gives ordinary kinetic terms; at higher orders we obtain derivative interactions. ...
... uniquely fixed by the symmetry: L = fπ2 Tr(∂µ Σ† ∂ µ Σ). Expanding to second order in the pion fields gives ordinary kinetic terms; at higher orders we obtain derivative interactions. ...
Massive two-loop Bhabha Scattering --- the - Indico
... One part of the SM is not yet well established: We do not know what causes the fundamental particles to have masses! The simplest idea is called the Higgs mechanism, involving one new particle, called the Higgs boson, and one additional force type, mediated by exchanges of this boson The Hig ...
... One part of the SM is not yet well established: We do not know what causes the fundamental particles to have masses! The simplest idea is called the Higgs mechanism, involving one new particle, called the Higgs boson, and one additional force type, mediated by exchanges of this boson The Hig ...
International Journal of High-Energy Physics CERN Courier Volume
... Sciences (RAS), Moscow, and Alexander Dolgov, of the Alikhanov Institute for Theoretical and Experimental Physics, Moscow, and INFN, have been awarded the 2014 Markov Prize. They received the award at the 2014 Markov Readings, held at the INR on 14 May, for "pioneering works in the field of theoreti ...
... Sciences (RAS), Moscow, and Alexander Dolgov, of the Alikhanov Institute for Theoretical and Experimental Physics, Moscow, and INFN, have been awarded the 2014 Markov Prize. They received the award at the 2014 Markov Readings, held at the INR on 14 May, for "pioneering works in the field of theoreti ...
pbarp - CERN Indico
... 25th February – 1st March 1985 From the Introduction by the Workshop Chairperson (Mario Greco): ….. But the highlights of the 1984 Berne Meeting were the presentations of a few unexpected events, in particular those with high missing transverse energy, which could hardly be accounted for in the Stan ...
... 25th February – 1st March 1985 From the Introduction by the Workshop Chairperson (Mario Greco): ….. But the highlights of the 1984 Berne Meeting were the presentations of a few unexpected events, in particular those with high missing transverse energy, which could hardly be accounted for in the Stan ...
string theory.
... • Allows strong-coupling calculations in supersymmetric gauge theories. • Surprisingly useful for real QCD in some regimes. • New frontier: modeling strongly coupled condensed matter systems. ...
... • Allows strong-coupling calculations in supersymmetric gauge theories. • Surprisingly useful for real QCD in some regimes. • New frontier: modeling strongly coupled condensed matter systems. ...
quantum field theory, effective potentials and determinants of elliptic
... of more than one Higgs fields, known as extended Higgs sectors such as the minimal supersymmetric Standard Model (MSSM). The Standard Model can be thought of as a limit to such theories with limits obtained by supersymmetry breaking of which there are many ways, and even more with introduction of D- ...
... of more than one Higgs fields, known as extended Higgs sectors such as the minimal supersymmetric Standard Model (MSSM). The Standard Model can be thought of as a limit to such theories with limits obtained by supersymmetry breaking of which there are many ways, and even more with introduction of D- ...
Particle Physics
... importance for life on Earth. Without it, the Sun wouldn’t be shining. As you know, the Sun shines because of nuclear fusion—light nuclei combine into heavier nuclei, while releasing energy in the process. The simplest fusion process is two protons combining into a helium nucleus. However, there is ...
... importance for life on Earth. Without it, the Sun wouldn’t be shining. As you know, the Sun shines because of nuclear fusion—light nuclei combine into heavier nuclei, while releasing energy in the process. The simplest fusion process is two protons combining into a helium nucleus. However, there is ...