ATLAS and CMS
... Super Sysmmetry! Many physicists have developed theories of supersymmetry, particularly in the context of Grand Unified Theories. The supersymmetric theories postulate that every particle we observe has a massive "shadow" particle partner. For example, for every quark there may be a so-called "sq ...
... Super Sysmmetry! Many physicists have developed theories of supersymmetry, particularly in the context of Grand Unified Theories. The supersymmetric theories postulate that every particle we observe has a massive "shadow" particle partner. For example, for every quark there may be a so-called "sq ...
Effective Field Theory Lectures
... The uncertainty principle tells us that to probe the physics of short distances we need high momentum. On the one hand this is annoying, since creating high relative momentum in a lab costs a lot of money! On the other hand, it means that we can have predictive theories of particle physics at low en ...
... The uncertainty principle tells us that to probe the physics of short distances we need high momentum. On the one hand this is annoying, since creating high relative momentum in a lab costs a lot of money! On the other hand, it means that we can have predictive theories of particle physics at low en ...
The Higgs Discovery as a Diagnostic Causal Inference
... another type of event (the effect). Suppose further that all other types of causes for this effect are not instantiated in the situation under consideration. You can then infer the instantiation of the particular type of cause from an instantiation of the type of effect. For my present purposes, suc ...
... another type of event (the effect). Suppose further that all other types of causes for this effect are not instantiated in the situation under consideration. You can then infer the instantiation of the particular type of cause from an instantiation of the type of effect. For my present purposes, suc ...
F From Vibrating Strings to a Unified Theory of All Interactions
... geometrical property that distinguishes their charges. This is different in string theory. Relativistic strings come with an orientation. For a closed string, the orientation is an arrow that defines a preferred direction along the string. One can travel along a closed string in two directions; the ...
... geometrical property that distinguishes their charges. This is different in string theory. Relativistic strings come with an orientation. For a closed string, the orientation is an arrow that defines a preferred direction along the string. One can travel along a closed string in two directions; the ...
Grand Unified Models and Cosmology
... universe from very early time until today. Particle physics is particularly necessary for the understanding of the very early universe. It is also the only way to solve some cosmological problems, such as the baryon asymmetry of the universe or the dark matter problem. Particle physics also plays an ...
... universe from very early time until today. Particle physics is particularly necessary for the understanding of the very early universe. It is also the only way to solve some cosmological problems, such as the baryon asymmetry of the universe or the dark matter problem. Particle physics also plays an ...
Beamline Instrumentation for Future Parity-Violation Experiments Robert Michaels
... Parity-violation experiments exploit the fact that a component of the weak interaction changes sign under a parity transformation, which isolates the effects due to the weak interaction and provides a tool to study a variety of physics topics. In electron scattering experiments, the parity is transf ...
... Parity-violation experiments exploit the fact that a component of the weak interaction changes sign under a parity transformation, which isolates the effects due to the weak interaction and provides a tool to study a variety of physics topics. In electron scattering experiments, the parity is transf ...
Document
... horizontal symmetry A4 , S3 , S 4or for , groups containing S4 leptons, but we do not know theoretically why these groups • No simple regularity seems to be present in quark mixing. That makes the idea of horizontal symmetry somewhat of an enigma • An experimental test for the presence of horizontal ...
... horizontal symmetry A4 , S3 , S 4or for , groups containing S4 leptons, but we do not know theoretically why these groups • No simple regularity seems to be present in quark mixing. That makes the idea of horizontal symmetry somewhat of an enigma • An experimental test for the presence of horizontal ...
doc - StealthSkater
... bi-local process in astrophysical length scales and would look locally like an emission of gauge boson. 3. One can, of course, argue it is not clear whether stringy gravitons represent hadron-like objects responsible for strong gravitation below relevant p-adic length scale rather than genuine grav ...
... bi-local process in astrophysical length scales and would look locally like an emission of gauge boson. 3. One can, of course, argue it is not clear whether stringy gravitons represent hadron-like objects responsible for strong gravitation below relevant p-adic length scale rather than genuine grav ...
String Backgrounds
... βµν = κ2 Rµν + 21 κ4 Rµρσκ Rν ρσκ + . . . . Also corrections from the expansion in the string coupling Corrections to Einstein equations at Planck scale: ...
... βµν = κ2 Rµν + 21 κ4 Rµρσκ Rν ρσκ + . . . . Also corrections from the expansion in the string coupling Corrections to Einstein equations at Planck scale: ...
Dark Matter Candidates - SLAC
... Our current understanding of physics includes no fundamental relationship between bosons and fermions. Supersymmetry was proposed as just such a relationship, first on the 2-d worldsheet for string theory [31], and slightly later for standard 4-d spacetime [32]. Supersymmetric theories put bosons and ...
... Our current understanding of physics includes no fundamental relationship between bosons and fermions. Supersymmetry was proposed as just such a relationship, first on the 2-d worldsheet for string theory [31], and slightly later for standard 4-d spacetime [32]. Supersymmetric theories put bosons and ...
Physics through Extra Dimensions: On Dualities, Unification, and Pair Production
... I have been very fortunate and privileged to have had the opportunity to work with and learn from some of the greatest minds of physics today. I am grateful to Professor Edward Witten, my advisor, for stimulating discussions and for his time and dedication. I cherish every moment of our work togethe ...
... I have been very fortunate and privileged to have had the opportunity to work with and learn from some of the greatest minds of physics today. I am grateful to Professor Edward Witten, my advisor, for stimulating discussions and for his time and dedication. I cherish every moment of our work togethe ...
Slide 1
... Due to every group member’s contribution, PBL can also enrich the information about the topics PBLs are time consuming comparing with the normal courses Also requires a lot of work from the supervisor Doesn’t work well for theoretical courses ...
... Due to every group member’s contribution, PBL can also enrich the information about the topics PBLs are time consuming comparing with the normal courses Also requires a lot of work from the supervisor Doesn’t work well for theoretical courses ...
Document
... - need to take a fresh look at what we thought we knew well. E.g. strangeness and other “sea’s” in nucleons. ...
... - need to take a fresh look at what we thought we knew well. E.g. strangeness and other “sea’s” in nucleons. ...
Particle Physics Matter, Energy, Space, Time
... • Explanation most likely to be at ~TeV scale because this is the relevant energy scale UCB Colloquium ...
... • Explanation most likely to be at ~TeV scale because this is the relevant energy scale UCB Colloquium ...
Towards Understanding the Internal Symmetries of Nature: Gauge
... the distance-time subspace for its mathematical expressions. All of the consciousness-related and higher-dimensional-related aspects of nature will eventually utilize the reciprocal domain aspects of this RF for its mathematical expressions. Further, a coupling medium is needed to act between the su ...
... the distance-time subspace for its mathematical expressions. All of the consciousness-related and higher-dimensional-related aspects of nature will eventually utilize the reciprocal domain aspects of this RF for its mathematical expressions. Further, a coupling medium is needed to act between the su ...
ppt - Harvard Condensed Matter Theory group
... plaquette is the minimum system that exhibits dwave symmetry. 2. Connect two plaquettes into a superplaquette and study the dynamics of a d-wave pair. Use it to measure the pairing ...
... plaquette is the minimum system that exhibits dwave symmetry. 2. Connect two plaquettes into a superplaquette and study the dynamics of a d-wave pair. Use it to measure the pairing ...
Majorana returns - MIT Center for Theoretical Physics
... own antiparticle, by attempting to find the equation that such an object would satisfy. To get an equation of Dirac’s type (that is, suitable for spin-½) but capable of governing a real field, requires γ matrices that satisfy the Clifford algebra and are purely imaginary. Majorana found such matrice ...
... own antiparticle, by attempting to find the equation that such an object would satisfy. To get an equation of Dirac’s type (that is, suitable for spin-½) but capable of governing a real field, requires γ matrices that satisfy the Clifford algebra and are purely imaginary. Majorana found such matrice ...
Standard Model at the LHC (Lecture 1: Theoretical Recap) M. Schott
... How to get cross-sections as experimentalist Do I have to calculate these cross-sections every day? No! In every days life we use computer programs (event generators) which are doing this for us provide not only cross-sections, but also distributions of particles which are produced in collisions ...
... How to get cross-sections as experimentalist Do I have to calculate these cross-sections every day? No! In every days life we use computer programs (event generators) which are doing this for us provide not only cross-sections, but also distributions of particles which are produced in collisions ...
strong interactions of hadrons at high energies - Assets
... Let me mention two problems that emerged when preparing this text: one surmountable, another not. The first derived from the fact that the lectures were delivered twice (in 1972–1973 and then in 1974–1975). The only invariant in these two series was the format of lectures (four hours at the blackboar ...
... Let me mention two problems that emerged when preparing this text: one surmountable, another not. The first derived from the fact that the lectures were delivered twice (in 1972–1973 and then in 1974–1975). The only invariant in these two series was the format of lectures (four hours at the blackboar ...
The Internal and External Problems of String Theory
... Exclusively the fact that the quantized string has spin-2 states which can be interpreted as gravitons and which are completely unmotivated in the context of hadron physics led to this change of strategy and of context from hadron physics to quantum gravity. String theory is not the result of an int ...
... Exclusively the fact that the quantized string has spin-2 states which can be interpreted as gravitons and which are completely unmotivated in the context of hadron physics led to this change of strategy and of context from hadron physics to quantum gravity. String theory is not the result of an int ...
ModPhys III Lecture 5 - University of San Francisco
... In QCD the virtual quark-antiquark pairstend to screen the color charge. However, QCD has an additional wrinkle: its force-carrying particles, the gluons, themselves carry color charge, and in a different manner. Each gluon carries both a color charge and an anti-color magnetic moment. The net effec ...
... In QCD the virtual quark-antiquark pairstend to screen the color charge. However, QCD has an additional wrinkle: its force-carrying particles, the gluons, themselves carry color charge, and in a different manner. Each gluon carries both a color charge and an anti-color magnetic moment. The net effec ...
The Standard Model of Electroweak Interactions
... In spite of the rich physics contained in it, the Lagrangian (2.26) looks very simple because of its colour symmetry properties. All interactions are given in terms of a single universal coupling gs , which is called the strong coupling constant. The existence of self-interactions among the gauge fi ...
... In spite of the rich physics contained in it, the Lagrangian (2.26) looks very simple because of its colour symmetry properties. All interactions are given in terms of a single universal coupling gs , which is called the strong coupling constant. The existence of self-interactions among the gauge fi ...
![arXiv:1412.6954v1 [hep-ph] 22 Dec 2014](http://s1.studyres.com/store/data/008057210_1-f096d844b41fdb3feee8213a866fea62-300x300.png)
arXiv:1412.6954v1 [hep-ph] 22 Dec 2014
... both the standard model of particles and general relativity. It is anticipated that these two theories are merely low energy approximations of a single theory of the four fundamental forces that is unified and consistent at the Planck scale [1]. Many unifying proposals allow for Lorentz symmetry to ...
... both the standard model of particles and general relativity. It is anticipated that these two theories are merely low energy approximations of a single theory of the four fundamental forces that is unified and consistent at the Planck scale [1]. Many unifying proposals allow for Lorentz symmetry to ...