Extra Dimensions?
... Supersymmetry • Every boson is paired with a fermion (gluongluino, electron – selectron, gravitongravitino…) • Charges are not modified • Doubles the number of particles in the SM • Supersymmetric partners are considerably heavier – otherwise we had already seen them (the symmetry is ‘broken’) • An ...
... Supersymmetry • Every boson is paired with a fermion (gluongluino, electron – selectron, gravitongravitino…) • Charges are not modified • Doubles the number of particles in the SM • Supersymmetric partners are considerably heavier – otherwise we had already seen them (the symmetry is ‘broken’) • An ...
The beauty of string theory - Institute for Advanced Study
... space, it also can vibrate in the new fermionic dimensions. This new kind of vibration produces a cousin or “superpartner” for every elementary particle that has the same electric charge but differs in other properties such as spin. Supersymmetric theories make detailed predictions about how superpa ...
... space, it also can vibrate in the new fermionic dimensions. This new kind of vibration produces a cousin or “superpartner” for every elementary particle that has the same electric charge but differs in other properties such as spin. Supersymmetric theories make detailed predictions about how superpa ...
Слайд 1 - The Actual Problems of Microworld Physics
... O. D. Skoromnik, I. D. Feranchuk, D. V. Lu, C. H. Keitel ...
... O. D. Skoromnik, I. D. Feranchuk, D. V. Lu, C. H. Keitel ...
The beginning of physics
... The Standard Model. Describes all known particles and their electroweak and strong interactions. No significant deviations from SM observed to date. Observed differences between forces due to non-exact symmetry. Possibly the best physical theory in the history of physics. ...
... The Standard Model. Describes all known particles and their electroweak and strong interactions. No significant deviations from SM observed to date. Observed differences between forces due to non-exact symmetry. Possibly the best physical theory in the history of physics. ...
A path towards quantum gravity
... • 3. Strong • 4. Gravitational The large-scale structure of the universe is ruled by gravity only. All unifications beyond Maxwell involve nonAbelian gauge groups (YM or Diff(M)). ...
... • 3. Strong • 4. Gravitational The large-scale structure of the universe is ruled by gravity only. All unifications beyond Maxwell involve nonAbelian gauge groups (YM or Diff(M)). ...
The cosmic connection
... We don’t know, but the answer almost certainly lies in particle physics. In the 1980’s particle theorists developed what is still a leading candidate for a theory beyond the Standard Model. Supersymmetry predicts that every particle we know has a supersymmetric partner which is much more massive and ...
... We don’t know, but the answer almost certainly lies in particle physics. In the 1980’s particle theorists developed what is still a leading candidate for a theory beyond the Standard Model. Supersymmetry predicts that every particle we know has a supersymmetric partner which is much more massive and ...
Physics and the Search for Ultimate BuildingBlocks
... field theory of the strong interaction of hadrons. (Protons and neutrons are now taken to be composed of quarks, held together by gluons!) • Unified electroweak theory: a quantum field theory incorporating both electromagnetism and the weak interaction. ...
... field theory of the strong interaction of hadrons. (Protons and neutrons are now taken to be composed of quarks, held together by gluons!) • Unified electroweak theory: a quantum field theory incorporating both electromagnetism and the weak interaction. ...
Titles and Abstracts
... X3 and X4, for which there are two simplifying features, viz: The number of internuclear distances is the same as the number of internal coordinates, and the deviations from degeneracy can often be described in terms of a two-dimensional irreducible representation of the relevant permutation group. ...
... X3 and X4, for which there are two simplifying features, viz: The number of internuclear distances is the same as the number of internal coordinates, and the deviations from degeneracy can often be described in terms of a two-dimensional irreducible representation of the relevant permutation group. ...
Bilbao - INFN - Sezione di Firenze
... Hard to answer, we can only make educated guesses based on some very general features of QST: i) Strings like to live in D > 4 dimensions of space-time ii) String theory’s finiteness comes with modifications of QFT at short-distance/high energy (i.e. at s ,Ms ) Implications for: 1. Very early co ...
... Hard to answer, we can only make educated guesses based on some very general features of QST: i) Strings like to live in D > 4 dimensions of space-time ii) String theory’s finiteness comes with modifications of QFT at short-distance/high energy (i.e. at s ,Ms ) Implications for: 1. Very early co ...
Gregory Moore - Rutgers Physics
... With a great boost from string theory, after 40 years of intellectual ferment a new field has emerged with its own distinctive character, its own aims and values, its own standards of proof. One of the guiding principles is certainly Hilbert’s 6th Problem (generously interpreted): Discover the ultim ...
... With a great boost from string theory, after 40 years of intellectual ferment a new field has emerged with its own distinctive character, its own aims and values, its own standards of proof. One of the guiding principles is certainly Hilbert’s 6th Problem (generously interpreted): Discover the ultim ...
The Big Bang, the LHC and the God Particle
... From the nucleus to the Standard Model III. LHC Expectations The God particle Beyond the Standard Model Cosmology at the LHC ...
... From the nucleus to the Standard Model III. LHC Expectations The God particle Beyond the Standard Model Cosmology at the LHC ...
Some beautiful equations of mathematical physics
... Elsewhere he wrote: “A great deal of my work is just playing with equations and seeing what they give.”. And finally there is the famous statement: “It is more important for our equations to be beautiful than to have them fit experiment.” This last statement is more extreme than I can accept. Nevert ...
... Elsewhere he wrote: “A great deal of my work is just playing with equations and seeing what they give.”. And finally there is the famous statement: “It is more important for our equations to be beautiful than to have them fit experiment.” This last statement is more extreme than I can accept. Nevert ...
Harvard-Yale team on trail of electron`s mysteries
... from an adjacent building and was strung by graduate students. But the experiment — run by 11 Harvard and Yale university researchers on a budget in the low millions — is designed to probe some of the same unknown territory as the Large Hadron Collider in Europe, where scientists this summer apparen ...
... from an adjacent building and was strung by graduate students. But the experiment — run by 11 Harvard and Yale university researchers on a budget in the low millions — is designed to probe some of the same unknown territory as the Large Hadron Collider in Europe, where scientists this summer apparen ...
m H - Indico
... Most likely solution: Higgs mechanism EW symmetry is spontaneously broken What does it mean? ...
... Most likely solution: Higgs mechanism EW symmetry is spontaneously broken What does it mean? ...
The LHC Experiment at CERN
... account interaction of particles with Higgs. In vacuum, photon has zero mass and velocity = c. But in glass velocity < c photon has an effective mass! This is the effect of photon interacting with EM field of matter. Higgs is a quantum field permeating the universe. In analogy, particles acquire m ...
... account interaction of particles with Higgs. In vacuum, photon has zero mass and velocity = c. But in glass velocity < c photon has an effective mass! This is the effect of photon interacting with EM field of matter. Higgs is a quantum field permeating the universe. In analogy, particles acquire m ...
New Methods in Computational Quantum Field Theory
... Need to reinterpret delta functions as contour integrals around a global pole • Reinterpret cutting as contour modification ...
... Need to reinterpret delta functions as contour integrals around a global pole • Reinterpret cutting as contour modification ...
aspen_pb - Particle Theory
... There were two kinds of them: one kind whose decay products included always a proton were called hyperons and one kind ...
... There were two kinds of them: one kind whose decay products included always a proton were called hyperons and one kind ...
Alignment and Survey - Oxford Particle Physics home
... – We solve the Hierarchy problem – We get a motivation for the Higgs sector • But it’s more complicated than SM Higgs. – The Minimal Supersymmetric model allows the 3 forces to Unify at the GUT scale. – Requires a higgs mass less than 130 GeV/c2 (falsifiable!) – Possible candidates for Dark Matter. ...
... – We solve the Hierarchy problem – We get a motivation for the Higgs sector • But it’s more complicated than SM Higgs. – The Minimal Supersymmetric model allows the 3 forces to Unify at the GUT scale. – Requires a higgs mass less than 130 GeV/c2 (falsifiable!) – Possible candidates for Dark Matter. ...
STRING THEORY
... Theories have emerged that are based on no evidence, such as String Theory. http://imgs.xkcd.com/comics/string_theory.png ...
... Theories have emerged that are based on no evidence, such as String Theory. http://imgs.xkcd.com/comics/string_theory.png ...
Search for Heavy, Long-Lived Neutral Particles that Decay to
... Together you have a version of the Minimal Supersymmetric Standard Model (M.S.S.M.), though in this graphic not all the Higgs bosons are shown, nor is the gravitino. ...
... Together you have a version of the Minimal Supersymmetric Standard Model (M.S.S.M.), though in this graphic not all the Higgs bosons are shown, nor is the gravitino. ...
The Universe itself
... challenging — whatever the observable effect to measure, it would be tiny. Nevertheless, progress in the design of experiments sensitive enough for establishing a ‘quantum gravity phenomenology’, with a focus on laboratory-bound tests as an alternative to astrophysical observations, is being made6. ...
... challenging — whatever the observable effect to measure, it would be tiny. Nevertheless, progress in the design of experiments sensitive enough for establishing a ‘quantum gravity phenomenology’, with a focus on laboratory-bound tests as an alternative to astrophysical observations, is being made6. ...
What is the Higgs? - University of Manchester
... E.g. At Fermilab the collision of a single proton and antiproton is sufficiently energetic to produce over 2000 protons. At CERN, the electron and positron collided with sufficient energy to produce over 200 protons (electrons are more than 1000 times lighter than a proton!) ...
... E.g. At Fermilab the collision of a single proton and antiproton is sufficiently energetic to produce over 2000 protons. At CERN, the electron and positron collided with sufficient energy to produce over 200 protons (electrons are more than 1000 times lighter than a proton!) ...