Particle Physics 2011
... experiment at DORIS III, whose goal is to precisely measure
electron– and positron–proton scattering at low energies in
order to resolve an experimental puzzle in the elastic form
factors of the proton. Accelerator and detector were
successfully modified and set up so that everything is
prepared for ...
Mirror particles and mirror matter: 50 years of speculation and search
... symmetry in a more general sense, the existence of hypothetical right-handed
protons, pR , was considered, though the term “mirror particles” was not used
and pR and pL were assumed to interact “with the same electromagnetic field
and perhaps the same pion field”.
(Much later I learned that already ...
Are mirror worlds opaque?
... thermore, the mirror proton is stable for the same reason that the ordinary proton is stable, and that is, the
interactions of the mirror particles conserve a mirror
baryon number. The mirror particles are not produced
in Laboratory experiments just because they couple
very weakly to the ordinary pa ...
SCIENTIFIC ACHIEVEMENTS OF VLADIMIR GRIBOV LN Lipatov
... After publishing the papers devoted to deep inelastic scattering V. Gribov
began to work on more fundamental problems of QCD which were beyond the
applicability of perturbation theory. He discovered the important property of
nonabelian gauge theories which is known as ”Gribov’s ambiguities” Nucl. P ...
The Oscillating Neutrino
... (and their respective antiparticles). The
quarks are the building blocks that have
fractional electric charge and interact
primarily through the strong nuclear
force, also called the color force. Color
binds quarks together to form the
proton, the neutron, all nuclei, and all
the other hadrons (stro ...
... Given the huge degeneracy, it is then important
to ask global and structural questions first:
• Is the Higgs fundamental or composite?
• Is the new physics at the TeV scale, if any, follows
from naturalness principle?
• If we observe new particles, who ordered them? Does
any of them reduce the fine ...
PHY - University of Miami Academic Bulletin
... The research interface between physics and biology; discussion of
current research in biology being done by physicists. New analytical tools
and techniques that apply to this interdisciplinary interface and new
features of biological systems that can be addressed with them.
Pre-requisite: PHY 202 Or ...
Double-Soft Limits of Gluons and Gravitons
... Kac-Moody type symmetry were made recently . In this picture the scattering amplitudes in
four-dimensional quantum field theory are related to correlation functions of a two-dimensional
quantum theory living on the sphere at null infinity. This fascinating proposal merits further
The suble ...
Introduction to particle physics
... This can be obtained, e.g., from the Schrödinger Eqn., or
straight from QM commutation relations
The Bohr model: classical orbits quantized by requiring
angular momentum to be integer multiple of
There is kinetic energy associated with orbital motion
an upper bound on l for a given value of En
JHEP07(2007)083 - IHEP Diffractive Group
... The use of fixed number of gluon exchanges seems to be justified at |t| large enough,
where the elementary short-distance structure of reggeons has to show up. As to small
values of t it is clear that due to genuinely strong interaction one cannot limit the problem
by any fixed number of exchanged p ...
Astroparticle physics at LHC - Institute of Physics (IoP)
... mass problem in the study of motion of galaxies and clusters, the shape of galactic rotation
curves, observations on weak gravitational lens effects near clusters and the
correspondence between the cosmic microwave background anisotropies and the largescale structure of the Universe, could be given ...
Beyond the Standard Model
... there are many that have been around for a decade or more, and are likely to play an
important rôle in particle physics at least for another decade. The emphasis is on those
ideas that are likely to survive for a while, not only due to lack of data, but also because
of intrinsic importance.
Grand Unified Models and Cosmology
... The particle physics standard model and theories beyond, such as grand unified theories or
supersymmetry, are essential ingredients for any successful description of the evolution of the
universe from very early time until today. Particle physics is particularly necessary for the
understanding of th ...
... You need some way to estimate the
potential size of any new
contributions relative to NNχχ
Effective Field Theory (EFT) can
More general than MSSM.
... There are many conventions, but understanding shouldn’t depend on this. I will try to stick to
one choice and be consistent, but I may slip on occasion, so beware.
Supersymmetry is a deep and rich subject, I have been studying it for about 7 years,
but I am still learning. We have only ...
Symmetry in Nature
... Newton and his successors took these principles of invariance pretty much for granted, as an
implicit basis for their theories, so it was quite a wrench when these principles themselves became
a subject of serious physical investigation. The crux of Einstein’s 1905 Special Theory of
Relativity was a ...
RePoSS #9: The Early Reception of Bohr`s Atomic Theory (1913
... primary source for the present reception study is the scientific literature in the
form of articles, books and conference proceedings, but of importance are also
informal information as found in letters and reminiscences. Citations to Bohr’s
works give an indication of the impact of the theory, but ...
Bachelor study program in physics
... The fully acquired program allows to continue studies for the Master degree in Physics
and functionally associated fields, with or without additional conditions, which depend on
the character of the Master degree.
Inhaltsverzeichnis • Contents - the Max Planck Institute for the
... electron attachment states in solids and polymers . . . . . . . . . . . . . . . . . . 71
1.9 K. Gelfert, A. Riegert, N. Baba, W. Just, H. Kantz :
Replacement of fast chaotic degrees of freedom by white noise . . . . . 77
1.10 H. Kantz, M. Ragwitz, D. Holstein :
Markov chain models from data - predic ...
PDF of this page - Miami bulletin
... quantum mechanics, and electromagnetism. Develops problemsolving skills by applying material from introductory math and physics
classes along with new mathematical techniques. Allows for modeling
of systems at a deeper level. Emphasizes the use of mathematics to
model physical systems and methods of ...
Get as PowerPoint - ardent
... During therapy with carbon ions the
carbon beam suffers high levels of
fragmentation before the Bragg Peak.
Welcome to Interactive Physics - Design Simulation Technologies
... Mass; freely falling objects; laws of motion; linear kinematics
Vector and scalar quantities; vector components; unit vector
Oscillatory motion; frequency and amplitude; rotational kinematics; centripetal force
Graphs and measurements; motion diagrams
Law of gravity; Newton’s second law
Air resistan ...
... – 1791: One ten-millionth of ¼ Earth’s meridian through Paris
– 1799: Platinum meter bar (refined in 1889 and 1927)
– 1960: 1,650,763.73 wavelengths of 2p105d5 of Kr-86
– 1983: Length traveled by light in vacuum in 1/299,762,458 of a sec
– 2002: “… as long as GR effects are negligible.”
L. R. Flore ...
... Where and how do we generate the Baryon asymmetry?
• No definitive answer to this question yet!
• In 1967 A. Sacharov formulated a set of general
conditions that any such mechanism has to meet
1) You need a process that violates the baryon number B:
(Baryon number of matter=1, of anti-matter = -1)
Theory of everything
A theory of everything (ToE) or final theory, ultimate theory, or master theory is a hypothetical single, all-encompassing, coherent theoretical framework of physics that fully explains and links together all physical aspects of the universe. Finding a ToE is one of the major unsolved problems in physics. Over the past few centuries, two theoretical frameworks have been developed that, as a whole, most closely resemble a ToE. The two theories upon which all modern physics rests are general relativity (GR) and quantum field theory (QFT). GR is a theoretical framework that only focuses on the force of gravity for understanding the universe in regions of both large-scale and high-mass: stars, galaxies, clusters of galaxies, etc. On the other hand, QFT is a theoretical framework that only focuses on three non-gravitational forces for understanding the universe in regions of both small scale and low mass: sub-atomic particles, atoms, molecules, etc. QFT successfully implemented the Standard Model and unified the interactions (so-called Grand Unified Theory) between the three non-gravitational forces: weak, strong, and electromagnetic force.Through years of research, physicists have experimentally confirmed with tremendous accuracy virtually every prediction made by these two theories when in their appropriate domains of applicability. In accordance with their findings, scientists also learned that GR and QFT, as they are currently formulated, are mutually incompatible - they cannot both be right. Since the usual domains of applicability of GR and QFT are so different, most situations require that only one of the two theories be used. As it turns out, this incompatibility between GR and QFT is only an apparent issue in regions of extremely small-scale and high-mass, such as those that exist within a black hole or during the beginning stages of the universe (i.e., the moment immediately following the Big Bang). To resolve this conflict, a theoretical framework revealing a deeper underlying reality, unifying gravity with the other three interactions, must be discovered to harmoniously integrate the realms of GR and QFT into a seamless whole: a single theory that, in principle, is capable of describing all phenomena. In pursuit of this goal, quantum gravity has recently become an area of active research.Over the past few decades, a single explanatory framework, called ""string theory"", has emerged that may turn out to be the ultimate theory of the universe. Many physicists believe that, at the beginning of the universe (up to 10−43 seconds after the Big Bang), the four fundamental forces were once a single fundamental force. Unlike most (if not all) other theories, string theory may be on its way to successfully incorporating each of the four fundamental forces into a unified whole. According to string theory, every particle in the universe, at its most microscopic level (Planck length), consists of varying combinations of vibrating strings (or strands) with preferred patterns of vibration. String theory claims that it is through these specific oscillatory patterns of strings that a particle of unique mass and force charge is created (that is to say, the electron is a type of string that vibrates one way, while the up-quark is a type of string vibrating another way, and so forth).Initially, the term theory of everything was used with an ironic connotation to refer to various overgeneralized theories. For example, a grandfather of Ijon Tichy — a character from a cycle of Stanisław Lem's science fiction stories of the 1960s — was known to work on the ""General Theory of Everything"". Physicist John Ellis claims to have introduced the term into the technical literature in an article in Nature in 1986. Over time, the term stuck in popularizations of theoretical physics research.