High Energy, Nuclear, Particle Physics Forum

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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.
Graduate Why does the cross section for Dark Matter decrease with increasing mass?
  • kelly0303
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High School Moving Center of Mass Collisions
  • metastable
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Graduate Need help with the reaction of neutrons and electrons
  • Ruslan_Sharipov
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Undergrad Why does LHC have 8 interaction points?
  • kelly0303
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Undergrad Long-range beam-beam interactions
  • kelly0303
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Graduate Why do we write that there are no right-handed neutrinos?
  • Jason Wright
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High School Electron scattering off of a nucleus
  • metastable
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Undergrad Why do stars only produce up to iron and nickel
  • niko_.97
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Undergrad Reconciling alpha particle mass
  • ezfzx
  • · Replies 11 ·
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High School Is the Strong Force Really Stronger Than the Electromagnetic Force?
  • PhDnotForMe
  • · Replies 3 ·
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3
Graduate Steps in an electron's magnetic moment derivation
  • kelly0303
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Graduate Small & large argument expansion of plasma dispersion function
  • sreerajt
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Undergrad How accurate are radon detectors?
  • SteveUSA
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High School Electron-positron bremsstrahlung
  • metastable
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Undergrad Head-on collision of an electron and a proton
  • Philip Land
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Graduate Ion Generation Troubleshooting: Overcoming Limitations in Small Ion Accelerators
  • Javier Lopez
  • · Replies 10 ·
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Undergrad How Much Better Will Top and Higgs Mass Measurements Get?
  • ohwilleke
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Undergrad Ion sensor for 1e20 ions/m3 density
  • Javier Lopez
  • · Replies 7 ·
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Undergrad Nitrogen production in stellar nucleosynthesis?
  • bbbl67
  • · Replies 4 ·
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4
Undergrad Effect of errors due to branching and acceptances
  • CAF123
  • · Replies 21 ·
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Undergrad Has anyone worked on higher dimensional strings?
  • vibe3
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Graduate Physical significance of growth rate in plasma
  • sreerajt
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High School Why is the Higgs not considered 'a 5th force'?
  • Gerinski
  • · Replies 2 ·
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Undergrad What Does Gauge Invariance Tell Us About Reality?
  • Ghost Repeater
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Graduate New Covariant QED representation of the E.M. field
  • Hans de Vries
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Undergrad Gluon creation and annihilation operators
  • Paul Colby
  • · Replies 4 ·
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Graduate Neutrino Electron Scattering In The Standard Model Approach
  • Radwan Parvez
  • · Replies 1 ·
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Graduate Neutrino Electron Scattering In The Standard Model Approach
  • Radwan Parvez
  • · Replies 3 ·
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Undergrad Can a liquid or solid plasma exist?
  • Eagle9
  • · Replies 26 ·
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High School Does background radiation have a diurnal variation?
  • CWatters
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High School Is 3-point of H20 used for Kelvin a certain set of isotope
  • swampwiz
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Graduate Reference for Hadron mass & spin problem?
  • Urs Schreiber
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Undergrad Derivative changes under CPT transformations
  • kelly0303
  • · Replies 3 ·
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Graduate Is the Mystery Particle Discovery Just Media Hype?
  • Arman777
  • · Replies 10 ·
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Undergrad Are There Any Theories for the Mystery Particle at 28 GeV?
  • Copernicuson
  • · Replies 1 ·
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Undergrad Can Cosmic Rays Be Economically Used in Particle Accelerators?
  • john taylor
  • · Replies 5 ·
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Undergrad Measurement of Earth's mass - with neutrinos
  • mfb
  • · Replies 4 ·
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High School What Does It Mean For A Force To Act On A Particle?
  • iScience
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Graduate What Does the Higgs Boson Reveal About the Nature of Electron Mass?
  • Nusc
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Undergrad What are the magnetic states of nucleons?
  • Javier Lopez
  • · Replies 10 ·
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Graduate Lorentz invariance from Dirac spinor
  • d8586
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Graduate Grassmann numbers and Fermions
  • kelly0303
  • · Replies 2 ·
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Graduate Spin direction of quarks in a baryon
  • bsaucer
  • · Replies 1 ·
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Graduate Yang-Mills 3 boson Lagrangian term in Peskin and Schroeder
  • Liany
  • · Replies 7 ·
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High School Using muon-catalyzation toward Island of Stability?
  • bbbl67
  • · Replies 9 ·
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9
High School How Does Proton Spin Influence Its Magnetic Field?
  • Javier Lopez
  • · Replies 3 ·
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Undergrad Show How Theta Term in QCD Lagrangian is a Total Derivative
  • Kara386
  • · Replies 3 ·
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High School Particle behavior and the Doppler effect
  • itoero
  • · Replies 26 ·
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Graduate What does Schwarz's QFT theorem say about poles in Green's functions?
  • Malamala
  • · Replies 8 ·
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Undergrad What is a Proton Made Of and What Does It Look Like Under a Microscope?
  • Carpe Physicum
  • · Replies 8 ·
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High School Radioactive decay characteristics as measured by a dosimeter
  • artis
  • · Replies 6 ·
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Undergrad How can I use the NIST XCOM online tool to calculate X and Gamma shielding?
  • Javier Lopez
  • · Replies 7 ·
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Graduate What is the key parameter in fusion: momentum or energy?
  • Javier Lopez
  • · Replies 3 ·
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Graduate How do Fusion/Fission Gamma Rays Compare?
  • KangOfCanada
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Undergrad Calculate Muon Energy Loss with Bethe-Bloch Calculator
  • Getterdog
  • · Replies 4 ·
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High School How Did Polonium-210 Contaminate London in the Litvinenko Case?
  • Jimmy87
  • · Replies 9 ·
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High School Is Radioactive Decay Truly Random?
  • SarahB
  • · Replies 6 ·
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Graduate What is the significance of large logarithms in RG calculations?
  • Malamala
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High School Why is there still disagreement over the b quark's name?
  • ohwilleke
  • · Replies 14 ·
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Undergrad Is a Photon the Quanta of Both Electromagnetic Field and Wave?
  • gianeshwar
  • · Replies 3 ·
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Undergrad Particle interactions with matter
  • Mahavir
  • · Replies 4 ·
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Graduate Understanding Decay Schemes to Interpreting Energy Levels and Symbols
  • Mahavir
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Undergrad Charged particle acceleration across a potential
  • Todd Masssure
  • · Replies 7 ·
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Graduate Renormalized Mass: What is Physically Going On?
  • Malamala
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Graduate Understanding 1PI Diagrams and the Role in 4-Point Functions in QFT Explained
  • Malamala
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Graduate Could the 3D percolation model explain Regge-Trajectories?
  • Anashim
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Undergrad Is this outline of particle physics right?
  • crastinus
  • · Replies 3 ·
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Undergrad Where are the Beta Particles in a Muon Detector?
  • Getterdog
  • · Replies 3 ·
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Undergrad Infinite range of E-M field vs finite age of particles
  • nomadreid
  • · Replies 7 ·
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High School Terrestrial Spontaneous Fission & Unstable Isotopes
  • Jorge cunha
  • · Replies 1 ·
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Undergrad QFT Path Integral: Confusions on Left & Right Most Terms & Vacuum State
  • Silviu
  • · Replies 12 ·
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Graduate Are valence quarks real physical entities?
  • HEPlover
  • · Replies 4 ·
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4
High School LHC -- Why no success except for the Higgs?
  • Scott Tyler
  • · Replies 27 ·
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Undergrad Photoelectric absorption and low energy electron absorption
  • Taylor_1989
  • · Replies 4 ·
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Undergrad LHCb Discovers Two New Particles
  • Amrator
  • · Replies 9 ·
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High School Is the Force Between Two Protons Weaker Than Between Two Neutrons in Nucleons?
  • Krushnaraj Pandya
  • · Replies 11 ·
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Undergrad Spin and helicity conservation in QED
  • Silviu
  • · Replies 3 ·
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Undergrad Weyl Spinors & Helicity: Explained
  • kelly0303
  • · Replies 4 ·
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Undergrad Uncertainty of MonteCarlo Simulations: Weight and Error Bars
  • Aleolomorfo
  • · Replies 2 ·
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High School LHC Collisions: Events, Energy & Finding New Particles
  • Zman
  • · Replies 14 ·
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Undergrad What is the definition of the transverse mode in QFT?
  • Silviu
  • · Replies 2 ·
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Graduate Computing amplitude for divergent loop diagrams?
  • Ramtin123
  • · Replies 3 ·
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Undergrad Feynman Rules for Scalar QED: LRZ Reading
  • Silviu
  • · Replies 5 ·
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Graduate How are positrons used for fusion propulsion?
  • Ozne
  • · Replies 3 ·
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Undergrad Creation of matter in the big bang
  • oksuz_
  • · Replies 2 ·
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Undergrad Tachyon and antiparticle difference
  • phoenix95
  • · Replies 6 ·
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Graduate What is the "real" Feynman propagator?
  • quickAndLucky
  • · Replies 7 ·
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Undergrad Further S matrix clarifications
  • Silviu
  • · Replies 4 ·
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Graduate Is field theory needed in Regge-theory?
  • Anashim
  • · Replies 7 ·
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Undergrad Can a particle transform into its counter anti-particle?
  • MathematicalPhysicist
  • · Replies 11 ·
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Graduate Nuclear and Atomic energy levels
  • QuarkDecay
  • · Replies 3 ·
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Graduate Three dimensional representation of ##U(1)\times SU(2)##
  • Ramtin123
  • · Replies 6 ·
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Undergrad Why do we assume particles are free at infinity in the S matrix theory?
  • Silviu
  • · Replies 5 ·
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Undergrad Constant field in the Lagrangian
  • kelly0303
  • · Replies 15 ·
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High School Is the Coulomb Force Limited by the Pauli Exclusion Principle in Hydrogen Atoms?
  • Abeer Arora
  • · Replies 7 ·
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Undergrad A Fermion interacts with the Higgs field
  • Spinnor
  • · Replies 2 ·
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Undergrad What Determines Whether Radiation Passes Through Materials?
  • Stephen22
  • · Replies 5 ·
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Graduate Deriving the Unitary Gauge of the Higgs Mechanism
  • ohs
  • · Replies 5 ·
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Undergrad Helicity vs Chirality: Understanding the Difference
  • Silviu
  • · Replies 3 ·
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Undergrad The Maxwellian Averaged Cross Section
  • parazit
  • · Replies 4 ·
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