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High Energy, Nuclear, Particle Physics Forum

Join expert discussion on High Energy, Nuclear, Particle Physics. Properties, relationships, and interactions of subatomic particles. Experimental and theoretical physics of nuclei and elementary particles.

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Graduate Neutron Isomerie: Can Neutronium Have Metastable Stage?

Apr 15, 2015 · Replies 6 · Apr 18, 2015

Replies: 6

Views: 2K

Graduate Dark matter annihilation into gamma rays

Apr 17, 2015 · Replies 8 · Apr 17, 2015

Replies: 8

Views: 3K

Graduate Canonical quantization of spin-3/2 particle

Apr 11, 2015 · Replies 1 · Apr 17, 2015

Replies: 1

Views: 2K

Graduate Electron Capture - X-ray or gamma-ray?

Apr 16, 2015 · Replies 6 · Apr 16, 2015

Replies: 6

Views: 3K

Graduate Electron Capture and Coulomb's Law

Apr 16, 2015 · Replies 8 · Apr 16, 2015

Replies: 8

Views: 2K

Graduate QFT Cutting Rules: Improved Versions & Worked Examples

Aug 13, 2007 · Replies 5 · Apr 15, 2015

Replies: 5

Views: 5K

Graduate Doing a paper on the strong nuclear force --

Apr 15, 2015 · Replies 6 · Apr 15, 2015

Replies: 6

Views: 2K

Graduate An Introduction to Quantum Field Theory (Peskin and Schröder) - Page 22

Oct 25, 2014 · Replies 13 · Apr 15, 2015

Replies: 13

Views: 5K

Undergrad Is Geiger Counter Count Rate Equivalent to Radioactive Source Activity?

Apr 15, 2015 · Replies 4 · Apr 15, 2015

Replies: 4

Views: 3K

Graduate LHC vs. Cosmic Rays: What Role Does Density Play in Particle Research?

Apr 14, 2015 · Replies 25 · Apr 15, 2015

Replies: 25

Views: 4K

Graduate What is the meaning of unbound in the context of half-lives of nuclei?

Apr 12, 2015 · Replies 10 · Apr 15, 2015

Replies: 10

Views: 2K

Graduate Can we say the Higgs is 'the originator of Time'?

Apr 15, 2015 · Replies 10 · Apr 15, 2015

Replies: 10

Views: 2K

Graduate Why is this tau decay not allowed?

Apr 12, 2015 · Replies 13 · Apr 15, 2015

Replies: 13

Views: 2K

Graduate Negative Mass Particles: Will They Reach Infinite Speed?

Apr 15, 2015 · Replies 3 · Apr 15, 2015

Replies: 3

Views: 2K

Graduate Gauge theory with non-dynamical gauge field

Apr 11, 2015 · Replies 2 · Apr 15, 2015

Replies: 2

Views: 2K

Undergrad Charge Conservation in Particle Collisions

Apr 13, 2015 · Replies 11 · Apr 14, 2015

Replies: 11

Views: 2K

Undergrad XRay Production and Bremsstrahlung

Apr 13, 2015 · Replies 3 · Apr 14, 2015

Replies: 3

Views: 3K

Graduate Main difference between P, S & D Partial Waves in Decays?

Mar 25, 2015 · Replies 5 · Apr 14, 2015

Replies: 5

Views: 2K

Graduate Neutrino Detectors: Signature of l q & e Interactions

Apr 10, 2015 · Replies 16 · Apr 13, 2015

Replies: 16

Views: 3K

Graduate Fundamental Differences: MINOS and DUNE

Apr 12, 2015 · Replies 2 · Apr 13, 2015

Replies: 2

Views: 1K

Graduate Glashow resonance (UHE neutrinos)

Apr 12, 2015 · Replies 5 · Apr 12, 2015

Replies: 5

Views: 2K

Graduate Is it possible to construct a gauge theory with local ISO(3) symmetry?

Apr 10, 2015 · Replies 4 · Apr 11, 2015

Replies: 4

Views: 2K

Graduate Antiparticles are regular particles going backward in time?

Apr 6, 2015 · Replies 13 · Apr 11, 2015

Replies: 13

Views: 5K

Graduate Basic Questions on the Standard Model

Apr 7, 2015 · Replies 5 · Apr 11, 2015

Replies: 5

Views: 2K

Graduate Proton-neutron mass difference explained

Apr 8, 2015 · Replies 5 · Apr 10, 2015

Replies: 5

Views: 2K

Graduate Proton Collision Feynman Diagram

Apr 8, 2015 · Replies 11 · Apr 10, 2015

Replies: 11

Views: 9K

Graduate Symmetry in Integrals: Peskin's Equation 6.43 & 6.44

Apr 9, 2015 · Replies 5 · Apr 10, 2015

Replies: 5

Views: 2K

Undergrad Looking for tabular data of Isotopes

Apr 9, 2015 · Replies 2 · Apr 10, 2015

Replies: 2

Views: 1K

Graduate What is the total decay rate of N(1875) from the particle data group?

Apr 10, 2015 · Replies 2 · Apr 10, 2015

Replies: 2

Views: 1K

Graduate Can Fleeting Heavy Atoms Form Stable Molecules Before Decay?

Apr 9, 2015 · Replies 1 · Apr 9, 2015

Replies: 1

Views: 2K

Undergrad Why extra neutrons make the nucleus unstable?

Apr 9, 2015 · Replies 3 · Apr 9, 2015

Replies: 3

Views: 3K

Graduate How a pair spectrometer works?

Apr 7, 2015 · Replies 2 · Apr 7, 2015

Replies: 2

Views: 2K

Graduate Why do neutrons and neutrinos have arrows in Feynman diagrams?

Apr 6, 2015 · Replies 7 · Apr 7, 2015

Replies: 7

Views: 2K

Graduate Verifying Ward Identity: Need Help With Algebra?

Apr 5, 2015 · Replies 2 · Apr 6, 2015

Replies: 2

Views: 2K

Graduate From Effective Lagrangian to Feynman Rule

Apr 5, 2015 · Replies 1 · Apr 5, 2015

Replies: 1

Views: 2K

Graduate Are microcanonical algorithms still used in lattice QCD?

Apr 3, 2015 · Replies 2 · Apr 5, 2015

Replies: 2

Views: 1K

Graduate Maximizing Higgs Particle Travel: Insights on Acceleration and Detection

Apr 4, 2015 · Replies 4 · Apr 5, 2015

Replies: 4

Views: 1K

Graduate Pair production differential cross section

Apr 5, 2015 · Replies 6 · Apr 5, 2015

Replies: 6

Views: 2K

Graduate What Is Detection Efficiency in HPGe Detectors?

Apr 4, 2015 · Replies 4 · Apr 5, 2015

Replies: 4

Views: 2K

Undergrad Fission of Uranium: Why U-235 is Better than U-238

Mar 31, 2015 · Replies 6 · Apr 4, 2015

Replies: 6

Views: 3K

Graduate Feynman Diagrams, exchange particle?

Apr 2, 2015 · Replies 9 · Apr 3, 2015

Replies: 9

Views: 4K

Undergrad Neutral isotopes of atom, state possible value for A & Z?

Apr 3, 2015 · Replies 3 · Apr 3, 2015

Replies: 3

Views: 2K

Graduate The fragmentation function of ##K^{*0}## particle?

Apr 3, 2015 · Replies 2 · Apr 3, 2015

Replies: 2

Views: 1K

Graduate Find Fusion Cross Sections for All Isotope Pairs - Data/Book/Program/Formula

Mar 30, 2015 · Replies 13 · Apr 3, 2015

Replies: 13

Views: 4K

Graduate What is the true nature of neutrinos and their role in the universe?

Apr 3, 2015 · Replies 5 · Apr 3, 2015

Replies: 5

Views: 2K

Graduate What would happen if light oscillated in one plane?

Apr 2, 2015 · Replies 5 · Apr 2, 2015

Replies: 5

Views: 1K

Graduate Scalar as one dimensional representation of SO(3)

Apr 1, 2015 · Replies 7 · Apr 2, 2015

Replies: 7

Views: 3K

Graduate What is the general form of the rotation matrix in SU(2) space?

Mar 30, 2015 · Replies 7 · Apr 1, 2015

Replies: 7

Views: 4K

Graduate Why is this decay allowed and another not?

Mar 26, 2015 · Replies 4 · Mar 31, 2015

Replies: 4

Views: 2K

Graduate Why is the electroweak cross-section zero at Z boson mass?

Mar 29, 2015 · Replies 4 · Mar 30, 2015

Replies: 4

Views: 2K

High School Is The God Particle Book Accurate for Understanding Basic Forces?

Mar 28, 2015 · Replies 4 · Mar 30, 2015

Replies: 4

Views: 1K

Graduate What Are Sigma Regions for Observable R(D) in Theoretical Models?

Mar 30, 2015 · Replies 1 · Mar 30, 2015

Replies: 1

Views: 1K

Graduate Weak decay, decay rate, colour-supressed and colour-allowed

Mar 25, 2015 · Replies 9 · Mar 28, 2015

Replies: 9

Views: 2K

Graduate Why complex reps of gauge group for chiral theory?

Mar 22, 2015 · Replies 2 · Mar 28, 2015

Replies: 2

Views: 2K

Graduate Quick question on the mass condition for beta decay

Mar 27, 2015 · Replies 8 · Mar 28, 2015

Replies: 8

Views: 2K

Undergrad Magic Numbers in the Nucleus: Fact vs. Fiction

Mar 27, 2015 · Replies 3 · Mar 27, 2015

Replies: 3

Views: 2K

Undergrad Rutherford's Alpha particles experiment

Mar 26, 2015 · Replies 6 · Mar 27, 2015

Replies: 6

Views: 3K

Graduate 'Special' fourth order Feynman diagram Compton Scattering - Why is it allowed?

Mar 25, 2015 · Replies 7 · Mar 26, 2015

Replies: 7

Views: 7K

Graduate Cut-off Regularization of Chiral Perturbation Theory

Mar 21, 2015 · Replies 1 · Mar 26, 2015

Replies: 1

Views: 2K

Undergrad GAMSAT Strong Force Question: What Happens to Energy?

Mar 26, 2015 · Replies 5 · Mar 26, 2015

Replies: 5

Views: 2K

Graduate Conformal Field Theory: Questions & Answers

Mar 19, 2015 · Replies 4 · Mar 26, 2015

Replies: 4

Views: 2K

Graduate Creating Matter from Photons: Proton-Antiproton Bias?

Mar 26, 2015 · Replies 1 · Mar 26, 2015

Replies: 1

Views: 2K

Graduate How massive is a monopole particle compared to a proton?

Mar 24, 2015 · Replies 4 · Mar 25, 2015

Replies: 4

Views: 2K

Graduate Micro black holes, millions / billions of years?

Mar 21, 2015 · Replies 31 · Mar 25, 2015

2

Replies: 31

Views: 3K

Graduate The Hierarchy Problem: A Problematic Relationship between High and Low Energy?

Mar 24, 2015 · Replies 1 · Mar 25, 2015

Replies: 1

Views: 1K

Graduate Simple expression for Coloumb energy

Mar 23, 2015 · Replies 9 · Mar 24, 2015

Replies: 9

Views: 2K

Graduate What were the clues that the weak and EM force are the same

Mar 21, 2015 · Replies 3 · Mar 24, 2015

Replies: 3

Views: 2K

Graduate Opinion on Lockheed Martin's fusion "breakthrough"

Mar 24, 2015 · Replies 2 · Mar 24, 2015

Replies: 2

Views: 1K

Graduate Instruments to measure plasmas besides Langmuir probes?

Mar 17, 2015 · Replies 1 · Mar 24, 2015

Replies: 1

Views: 1K

Graduate Proton Rest Mass: Is c^2 a Variable or a Unit?

Mar 22, 2015 · Replies 11 · Mar 22, 2015

Replies: 11

Views: 5K

Undergrad Electrical neutrality in radioactive decay

Jan 27, 2015 · Replies 12 · Mar 22, 2015

Replies: 12

Views: 3K

Graduate Alternative methods for observing Grand Unification?

Mar 22, 2015 · Replies 1 · Mar 22, 2015

Replies: 1

Views: 1K

Graduate Can Non-Gauge Forces Exist in the Quantum Vacuum?

Mar 20, 2015 · Replies 1 · Mar 21, 2015

Replies: 1

Views: 1K

Graduate The amplitude of B decay into tau neutrino

Mar 18, 2015 · Replies 2 · Mar 21, 2015

Replies: 2

Views: 2K

Graduate Understanding Cyclotron Oscillations Frequency

Mar 20, 2015 · Replies 4 · Mar 21, 2015

Replies: 4

Views: 2K

Graduate Can a plasma give off black body emission?

Aug 14, 2014 · Replies 6 · Mar 20, 2015

Replies: 6

Views: 6K

Graduate Breit-Wigner propagator Of resonance

Mar 20, 2015 · Replies 1 · Mar 20, 2015

Replies: 1

Views: 2K

Undergrad Does a positron in Beta+ decay interact with electrons outside the nucleus?

Mar 19, 2015 · Replies 4 · Mar 20, 2015

Replies: 4

Views: 2K

Graduate CERN Alice Particle spectra behavior

Mar 19, 2015 · Replies 5 · Mar 20, 2015

Replies: 5

Views: 2K

Graduate LHC Dangers (really *only* stuff that's already happening?)

Mar 19, 2015 · Replies 3 · Mar 20, 2015

Replies: 3

Views: 2K

Graduate Left-Handed Pion: Direction of Flight vs Spin

Mar 20, 2015 · Replies 1 · Mar 20, 2015

Replies: 1

Views: 2K

Graduate What Forces Bind Quarks Within Particles?

Mar 20, 2015 · Replies 1 · Mar 20, 2015

Replies: 1

Views: 2K

Graduate Proton creation and annihilation

Mar 20, 2015 · Replies 1 · Mar 20, 2015

Replies: 1

Views: 2K

Graduate Order in Renormalization Theory

Feb 17, 2015 · Replies 6 · Mar 20, 2015

Replies: 6

Views: 4K

Graduate Why are invariant tensors also Clebsch-Gordan coefficients?

Mar 19, 2015 · Replies 1 · Mar 19, 2015

Replies: 1

Views: 2K

Graduate Need help solving a specific PDE

Mar 17, 2015 · Replies 1 · Mar 17, 2015

Replies: 1

Views: 1K

Graduate Why Mesons Can't Be Made of 2 Quarks Alone

Mar 17, 2015 · Replies 4 · Mar 17, 2015

Replies: 4

Views: 3K

Undergrad What is the meaning of squaring a number

Mar 16, 2015 · Replies 4 · Mar 17, 2015

Replies: 4

Views: 3K

Graduate Possible decay states strong interaction, parity conservation

Mar 14, 2015 · Replies 8 · Mar 16, 2015

Replies: 8

Views: 3K

Graduate Questions on electroweak symmetry breaking

Mar 2, 2015 · Replies 8 · Mar 16, 2015

Replies: 8

Views: 2K

Graduate BR of semileptonic B meson decay

Mar 16, 2015 · Replies 3 · Mar 16, 2015

Replies: 3

Views: 2K

Graduate Questions about the observations from NIF at LLNL

Mar 14, 2015 · Replies 1 · Mar 15, 2015

Replies: 1

Views: 941

Graduate Crazy Idea for Nuclear Waste Disposal

Mar 10, 2015 · Replies 9 · Mar 15, 2015

Replies: 9

Views: 3K

Graduate W Boson Propagator in Unitary Gauge

Mar 15, 2015 · Replies 1 · Mar 15, 2015

Replies: 1

Views: 4K

Graduate Pace and plan at which I can get into particle physics

Mar 14, 2015 · Replies 3 · Mar 15, 2015

Replies: 3

Views: 1K

Graduate Basic question on the pertubative Standard Model

Mar 14, 2015 · Replies 35 · Mar 14, 2015

2

Replies: 35

Views: 3K

Graduate How fast do particles need to travel to collide?

Mar 11, 2015 · Replies 3 · Mar 14, 2015

Replies: 3

Views: 2K

Graduate Stability in Nuclei: How Mass Energy Helps

Mar 13, 2015 · Replies 6 · Mar 14, 2015

Replies: 6

Views: 2K

Graduate Determining Gauge Boson Energy & Spin: Formulas Involved

Mar 13, 2015 · Replies 1 · Mar 13, 2015

Replies: 1

Views: 952

Graduate How would neutrinos affect fusion?

Mar 10, 2015 · Replies 21 · Mar 13, 2015

Replies: 21

Views: 4K

Particle Physics

Welcome to the Particle Physics forum!

Particle physics is a branch of physics that explores the fundamental constituents of matter and the forces acting upon them at the smallest scales. It involves the study of subatomic particles, such as quarks, leptons, and bosons, and their interactions.

Particle accelerators and detectors are crucial tools in this field, allowing scientists to probe the properties of particles by colliding them at high energies. The Standard Model of particle physics encapsulates our current understanding of these elementary particles and their interactions, but researchers continually seek to expand this framework and explore phenomena such as dark matter and dark energy.

Particle physics plays a central role in unraveling the fundamental nature of the universe, helping us comprehend the building blocks that form all matter and the forces governing their behavior.

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