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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Undergrad What neutron energy regime is dominant with neutron capture?
- says
- · Replies 1 ·
Undergrad Why are there still counts far from 180º angular separation?
- says
- · Replies 8 ·
High School Fusion Reactor Status: Tri Alpha, Lockheed & More
- rhubarbpieguy
- · Replies 15 ·
High School How are activity and decay constant different?
- Asad Raza
- · Replies 11 ·
Undergrad Why Are There No Down/Anti-Down Mesons?
- edguy99
- · Replies 6 ·
High School Is α-Decay the Same as Nuclear Fission? Understanding the Difference
- Haynes Kwon
- · Replies 5 ·
Undergrad Converting measured activity between isotopes
- silke
- · Replies 1 ·
Undergrad Best shape for photon tracking software
- sammy g
- · Replies 1 ·
High School Can Electromagnetic Fields Interact with the Planck Scale?
- oquen
- · Replies 34 ·
Undergrad Why are free-field Lagrangians quadratic in fields?
- Frank Castle
- · Replies 11 ·
Undergrad Can all the Quarks be found in the Sun?
- PhilipQuark
- · Replies 1 ·
Graduate Dimensional Regularization of Feynman Integrals
- nigelscott
- · Replies 4 ·
Undergrad Why can't we detect virtual photons?
- Sophrosyne
- · Replies 8 ·
Undergrad Higher order terms in perturbation theory (QFT)
- Frank Castle
- · Replies 9 ·
Undergrad Gamma ray cross sections from classical plane wave
- pierce15
- · Replies 1 ·
Graduate Help with the statistics of Upper Limits?
- ChrisVer
- · Replies 1 ·
Undergrad T2 relaxation and Spin Echo of protons
- JohnnyGui
- · Replies 24 ·
Undergrad Theoretical Models for Sizes of Fundamental Particles
- Nathan Warford
- · Replies 23 ·
Undergrad Are elementary particles subject to inertia?
- mitrasoumya
- · Replies 6 ·
High School Can the LHC Create Atom-Sized Black Holes?
- hsdrop
- · Replies 8 ·
High School Yukawa interaction vs gauge interaction
- Blue Scallop
- · Replies 1 ·
High School Problem understanding Paul traps
- chandrahas
- · Replies 1 ·
Undergrad Is there a limit to the possible masses of particles in the universe?
- Silviu
- · Replies 1 ·
High School Possible outcomes of reactions
- Biker
- · Replies 1 ·
Undergrad New Way of Particle Accelerating?
- BenjaminLovesQM
- · Replies 8 ·
High School Beta+ Decay: Where Does Positron & Neutrino Go?
- Frank Li
- · Replies 1 ·
Undergrad What Is the Role of Gauge Theory in Particle Physics?
- quasar987
- · Replies 3 ·
Undergrad Annihilation and production of bosons
- Arcturus7
- · Replies 2 ·
Undergrad Launching a particle at the highest point inside a sphere
- LouysHong
- · Replies 2 ·
Graduate Effective field theories and UV completion
- spaghetti3451
- · Replies 1 ·
Undergrad What does it mean for a particle to vibrate?
- kipinaac
- · Replies 6 ·
Undergrad Do Fermi and Gamow-Teller transitions only refer to isospin
- charlesmartin14
- · Replies 1 ·
Graduate CP Properties of the SM Higgs boson
- welatiger
- · Replies 9 ·
Undergrad Ward identity for off shell photon?
- CAF123
- · Replies 9 ·
Undergrad Time of cooling to equilibrium in space plasma gas
- Albertgauss
- · Replies 4 ·
Undergrad Anti Proton - Non Proton reaction
- Sebastiaan
- · Replies 2 ·
Undergrad Neutrino Oscillations and Mass
- Trixie Mattel
- · Replies 5 ·
Undergrad What Are Tetraquarks and Why Are They Important?
- Kevin McHugh
- · Replies 5 ·
Undergrad Energy released when 238U is divided into two 119Pd.
- Ulrik Nordin
- · Replies 2 ·
Undergrad Chirality/Helicity difference?
- qnach
- · Replies 7 ·
Undergrad Why CERN Energy Level Seems Low?
- Arman777
- · Replies 3 ·
Graduate Is beta decay a weak charge-current processes?
- charlesmartin14
- · Replies 4 ·
Undergrad What is mass according to the standard model?
- joegibs
- · Replies 6 ·
Undergrad Charge conjugation properties of the gluon
- CAF123
- · Replies 6 ·
Undergrad Why are gluons considered to be elementary particles?
- Sophrosyne
- · Replies 4 ·
High School Can radiation in space be captured and used in an Ion drive?
- Layne014
- · Replies 12 ·
Graduate Heavy Quark-Antiquark Annihilations
- Naeem Anwar
- · Replies 2 ·
Undergrad Energy and states of a particle in a box.
- Higgsono
- · Replies 3 ·
High School Do neutron stars have a minimum volume?
- nitsuj
- · Replies 9 ·
Undergrad LHCb observes 5 new particles (excited hadrons)
- mfb
- · Replies 7 ·
High School How to pronounce a nuclear reaction written in AZE notation?
- spareine
- · Replies 2 ·
Graduate Usefulness of a low energy cyclotron
- Snow510
- · Replies 2 ·
High School Calculating activity of a radionuclide
- Andrew1949
- · Replies 3 ·
Undergrad Does beta decay change spin orientation?
- jerry mac
- · Replies 3 ·
High School Nuclear Fission & Fusion: Explained for Newbies
- Jam Smith
- · Replies 3 ·
Undergrad Analyzing signals from a radioactive source
- Rajini
- · Replies 5 ·
Undergrad Dark Matter Decoupling from Plasma
- Trixie Mattel
- · Replies 1 ·
Undergrad Difference of resonant and non-resonant neutrino oscillation
- Trixie Mattel
- · Replies 1 ·
Graduate Any thinking in applying evolutionary algorithms to fusion?
- arupel
- · Replies 7 ·
Graduate Relative sign in diagrams for ##Z##-boson exchange for ##WW## scattering
- spaghetti3451
- · Replies 5 ·
High School How are initial radioactive isotope quantities assumed?
- Ty1erC
- · Replies 1 ·
Undergrad Is There a Reliable Link Between Gamma Radiation and Childhood Leukemia?
- UiOStud
- · Replies 5 ·
Graduate Relative Minus Sign for u d -> u d Process?
- dimitronic
- · Replies 1 ·
High School Measuring the energy of particles
- aveline de grandpre
- · Replies 4 ·
Undergrad When is a right handed neutrino a heavy neutral lepton(HNL)?
- Trixie Mattel
- · Replies 1 ·
High School Conservations in nuclear reactions
- Fiona Rozario
- · Replies 6 ·
Graduate Can the quantum Zeno effect be applied to the Higgs field
- Trollfaz
- · Replies 3 ·
Undergrad Why are Beryllium-7 neutrinos monoenergetic?
- Smalde
- · Replies 15 ·
Undergrad Positron/Proton Scattering Weak Charged Current
- jeffbarrington
- · Replies 5 ·
Undergrad Right Handed Neutrinos/Heavy Neutral Leptons
- Trixie Mattel
- · Replies 1 ·
Graduate What happens to an electron's energy after Bremsstrahlung radiation?
- adjoint+
- · Replies 4 ·
High School Questions about the highest-energy photons detected
- IsItSo
- · Replies 22 ·
High School Create Free Energy: Is it Possible?
- Venus0
- · Replies 7 ·
Graduate Using Fastjet in Pythia to plot distribution of particles
- Sandeep Hundal
- · Replies 12 ·
Graduate Understanding Fierz Identity Transformations
- Luca_Mantani
- · Replies 1 ·
Graduate How could we produce a secondary beam of long neutral kaon
- aveline de grandpre
- · Replies 9 ·
Undergrad Why Does Unstable Particle Decay Follow an Exponential Curve?
- Trollfaz
- · Replies 2 ·
Undergrad Problem understanding crosssection
- chandrahas
- · Replies 28 ·
Undergrad Are there right handed neutrinos?
- edguy99
- · Replies 2 ·
Graduate ΛQCDΛQCD from the beta function of QCD coupling constant
- spaghetti3451
- · Replies 3 ·
Graduate Key Problems in Hadronic Interactions for Students
- spaghetti3451
- · Replies 1 ·
Undergrad Seesaw Mechanism of vMSM and Left Right Symmetric Extension
- Trixie Mattel
- · Replies 2 ·
Undergrad Standard Model SU(2) singlets and doublets
- Trixie Mattel
- · Replies 2 ·
Undergrad Calculating Collision Cross Section in Fusion Reactors
- chandrahas
- · Replies 29 ·
Undergrad Semileptonic Lambda baryon decay suppression
- Triple_S
- · Replies 3 ·
Undergrad Is baryon antisymmetry always true?
- CAF123
- · Replies 4 ·
Undergrad Amplitude of particles in the medium of a longitudinal wave
- John Doe
- · Replies 1 ·
Undergrad How does handedness get preserved in this situation?
- newjerseyrunner
- · Replies 3 ·
Undergrad Longest Antimatter Containment
- Nabla
- · Replies 2 ·
Undergrad Are neutrinos definitely ruled out as Dark Matter?
- nikkkom
- · Replies 36 ·
Graduate What is wrong with particle acceleration based fusion?
- chandrahas
- · Replies 5 ·
Undergrad Attenuation: Definition, Calculations & Examples
- Kara386
- · Replies 2 ·
Undergrad What do tau particles DO? What is their function/purpose?
- Joseph Ross Mayhew
- · Replies 13 ·
Undergrad Is there a way to lower critical mass?
- l0st
- · Replies 5 ·
Undergrad Why prompt neutron gets less share of energy (fission)
- Magnetic Boy
- · Replies 3 ·
High School Antimatter Fuel: Will Future Space Travel Rely on It?
- Debaa
- · Replies 7 ·
Undergrad Increased efficiency Antimatter production
- BL4CKB0X97
- · Replies 13 ·
Undergrad Why is the Binding Energy of Deuterons So Low Compared to Larger Nuclei?
- sarvesh upadhyay
- · Replies 3 ·
Undergrad Has anyone ever determined at what rate quarks move?
- mpolo
- · Replies 27 ·
Undergrad Fusion reaction deuteron + tritium
- Jasiu
- · Replies 5 ·