Majorana Fermions - Physics | Oregon State University
... • None of the standard model fermions (with the possible exception of the neutrino) are their own antiparticles. • As such, they are sometimes called Dirac fermions in opposition to Majorana fermions. ...
... • None of the standard model fermions (with the possible exception of the neutrino) are their own antiparticles. • As such, they are sometimes called Dirac fermions in opposition to Majorana fermions. ...
Discrete Symmetries
... has discrete symmetries that play an important role. Particularly, three such discrete symmetries are a topic of interest in modern particle physics. The parity transformation P performs a reflection of the space coordinates at the origin (~r → −~r). Position and momentum change sign, while spin is ...
... has discrete symmetries that play an important role. Particularly, three such discrete symmetries are a topic of interest in modern particle physics. The parity transformation P performs a reflection of the space coordinates at the origin (~r → −~r). Position and momentum change sign, while spin is ...
Handout. Neutrino Relics from the Big Bang
... Why are there so many free parameters in the Standard Model? Sure, the Standard Model explains all present data, but it is ugly. There are at least 19 parameters (numbers) which we cannot predict—they must be measured. On historical and aesthetic grounds, this is taken as evidence that there is a be ...
... Why are there so many free parameters in the Standard Model? Sure, the Standard Model explains all present data, but it is ugly. There are at least 19 parameters (numbers) which we cannot predict—they must be measured. On historical and aesthetic grounds, this is taken as evidence that there is a be ...
An Introduction to the Standard Model
... well reveal a structure, like strings, and could require a completely different theoretical framework. A theoretical framework of which the local quantum field theory description of the Standard Model would be just a “low energy”/”large distance” limit. At present the most complete and plausible des ...
... well reveal a structure, like strings, and could require a completely different theoretical framework. A theoretical framework of which the local quantum field theory description of the Standard Model would be just a “low energy”/”large distance” limit. At present the most complete and plausible des ...
The Mass Gap, Kg and the Planck Constant The Planck
... the subatomic particle frequency. This also means that any mass with a mass larger than the mass gap (as measured in one Planck second) cannot be one single fundamental particle, but must consist of two or more fundamental particles. In this view, one fundamental particle most likely consists of tw ...
... the subatomic particle frequency. This also means that any mass with a mass larger than the mass gap (as measured in one Planck second) cannot be one single fundamental particle, but must consist of two or more fundamental particles. In this view, one fundamental particle most likely consists of tw ...
What is new at CERN? - Vanderbilt HEP
... Inspired by Super-strings, Randall and Sundrum took the idea of extra-dimensions (spatial) seriously and asked what would accelerators see/measure. No discovery, putting limits on the models. Gabella CMS Status ...
... Inspired by Super-strings, Randall and Sundrum took the idea of extra-dimensions (spatial) seriously and asked what would accelerators see/measure. No discovery, putting limits on the models. Gabella CMS Status ...
Introduction to Spontaneous Symmetry Breaking
... Goldstone bosons can either be elementary …elds or composite …elds a) Elementary …elds Here local operators A, B are …elds in the Lagrangian–this is the case in Standard electroweak theory b) Composite …elds In this case A, B correspond to some bound states of elementary …elds. For example in QCD th ...
... Goldstone bosons can either be elementary …elds or composite …elds a) Elementary …elds Here local operators A, B are …elds in the Lagrangian–this is the case in Standard electroweak theory b) Composite …elds In this case A, B correspond to some bound states of elementary …elds. For example in QCD th ...
Lecture 10 - @let@token Neutrino physics I
... for Dirac neutrinos we can redefine fields as νL0 → e iαν νL0 , νR0 → e iαν νR0 , `L → e iα` `L , `R → e iα` `R , which leads to UPMNS → e −iα` UPMNS e iαν . This can be used to eliminate phases on the right and left of UPMNS , only “Dirac phases” remain ...
... for Dirac neutrinos we can redefine fields as νL0 → e iαν νL0 , νR0 → e iαν νR0 , `L → e iα` `L , `R → e iα` `R , which leads to UPMNS → e −iα` UPMNS e iαν . This can be used to eliminate phases on the right and left of UPMNS , only “Dirac phases” remain ...
Phase transition in gauge theories, monopoles and the Multiple
... There are circa 20 parameters in the SM characterizing the couplings and masses of the fundamental particles, whose values can only be understood in speculative models extending the SM. It was shown in Ref. [10] that the Family Replicated Gauge Group Model (FRGGM), suggested in Refs. [11,12] as an ...
... There are circa 20 parameters in the SM characterizing the couplings and masses of the fundamental particles, whose values can only be understood in speculative models extending the SM. It was shown in Ref. [10] that the Family Replicated Gauge Group Model (FRGGM), suggested in Refs. [11,12] as an ...
Chapter 10
... interpreted the scattering pattern of these particles. It is said, that these experiments could be interpreted so that there was a grainstructure in the protons. But sorry to say, it’s always hard to estimate the value of results achieved on indirect way as in this case. However, this experiment is ...
... interpreted the scattering pattern of these particles. It is said, that these experiments could be interpreted so that there was a grainstructure in the protons. But sorry to say, it’s always hard to estimate the value of results achieved on indirect way as in this case. However, this experiment is ...
10/29/2007 Julia Velkovska PHY 340a
... • The W & Z bosons were discovered in 1981, exactly where they were predicted to be! • Note the masses of W and Z are not exactly the same because of the different factors involving the Weinberg angle in the vertices. Julia Velkovska ...
... • The W & Z bosons were discovered in 1981, exactly where they were predicted to be! • Note the masses of W and Z are not exactly the same because of the different factors involving the Weinberg angle in the vertices. Julia Velkovska ...
Document
... The oscillation in time of neutral D mesons into their antiparticles, and vice versa, commonly called D0-D0 mixing, has been observed by several experiments in a variety of channels during the past year. While K0-K0 mixing and B0-B0 mixing are (relatively) well understood in the Standard Model of pa ...
... The oscillation in time of neutral D mesons into their antiparticles, and vice versa, commonly called D0-D0 mixing, has been observed by several experiments in a variety of channels during the past year. While K0-K0 mixing and B0-B0 mixing are (relatively) well understood in the Standard Model of pa ...
Report of PAC for Particle Physics
... The PAC strongly recommends to make the Movable Polarized Target (PPM) available to the experiments as soon as possible and requests the Directorate ensure that adequate resources are available for the realization of this project. The PAC notes the physics results obtained in NA49 and recommends con ...
... The PAC strongly recommends to make the Movable Polarized Target (PPM) available to the experiments as soon as possible and requests the Directorate ensure that adequate resources are available for the realization of this project. The PAC notes the physics results obtained in NA49 and recommends con ...
BABAR Belle Belle
... Observations of B0K0K0 and B+ K0K+, dominated by the b → dg penguin amplitude ...
... Observations of B0K0K0 and B+ K0K+, dominated by the b → dg penguin amplitude ...
QCD --- Quantum Chromodynamics
... Gluon couples to colour charge of quark Coupling strength ∝ √αS ...
... Gluon couples to colour charge of quark Coupling strength ∝ √αS ...
Lecture 1
... – Get an extra factor (-1) l where l is the orbital L quantum number – Note that parity formalism is parallel to total angular momentum J=L+S formalism, it has an intrinsic component and an orbital component ...
... – Get an extra factor (-1) l where l is the orbital L quantum number – Note that parity formalism is parallel to total angular momentum J=L+S formalism, it has an intrinsic component and an orbital component ...
Broken symmetry revisited - Homepages of UvA/FNWI staff
... Another area of physics where defects may play a fundamental role is cosmology. See for instance reference [13] for a recent review. According to the standard cosmological hot big bang scenario, the universe cooled down through a sequence of local and/or global symmetry breaking phase transitions in ...
... Another area of physics where defects may play a fundamental role is cosmology. See for instance reference [13] for a recent review. According to the standard cosmological hot big bang scenario, the universe cooled down through a sequence of local and/or global symmetry breaking phase transitions in ...
Notes/All Physics IB/Fundimental Particles
... mechanism, the universe is saturated with a field called the Higgs field that interacts with some particles more than others. Any attempt to accelerate these particles is met by a resistance called inertia. The LHC is testing for the existence of this field by putting so much energy into a small spa ...
... mechanism, the universe is saturated with a field called the Higgs field that interacts with some particles more than others. Any attempt to accelerate these particles is met by a resistance called inertia. The LHC is testing for the existence of this field by putting so much energy into a small spa ...
Observation of New-Particle Production by High
... It is a pleasure to acknowledge the aid and encouragement of the Fermilab staff. We thank B. Aubert and J. Pilcher for early contributions ...
... It is a pleasure to acknowledge the aid and encouragement of the Fermilab staff. We thank B. Aubert and J. Pilcher for early contributions ...
FlerasLectures - University of Oklahoma
... QuarkNet is a research-based high energy physics (HEP) teacher education project in the United States jointly funded by the National Science Foundation and the Department of Energy since 1999. QuarkNet operates as a partnership of high school teachers and mentor physicists working in the field of hi ...
... QuarkNet is a research-based high energy physics (HEP) teacher education project in the United States jointly funded by the National Science Foundation and the Department of Energy since 1999. QuarkNet operates as a partnership of high school teachers and mentor physicists working in the field of hi ...
Minimal Supersymmetric Standard Model
The Minimal Supersymmetric Standard Model (MSSM) is an extension to the Standard Model that realizes supersymmetry. MSSM is the minimal supersymmetrical model as it considers only ""the [minimum] number of new particle states and new interactions consistent with phenomenology"". Supersymmetry pairs bosons with fermions; therefore every Standard Model particle has a partner that has yet to be discovered. If the superparticles are found, it may be analogous to discovering dark matter and depending on the details of what might be found, it could provide evidence for grand unification and might even, in principle, provide hints as to whether string theory describes nature. The failure to find evidence for supersymmetry using the Large Hadron Collider since 2010 has led to suggestions that the theory should be abandoned.