10. THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS (for cosmic rays, see 96.40; for experimental methods and instrumentation, see 29)
11. General theory of fields and particles (see also 03.65 Quantum mechanics, 03.70 Theory of quantized fields)
11.10.-z Field theory (for gauge field theories, see 11.15)
11.10.Cd Axiomatic approach
11.10.Ef Lagrangian and Hamiltonian approach
11.10.Gh Renormalization
11.10.Hi Renormalization group evolution of parameters
11.10.Jj Asymptotic problems and properties
11.10.Kk Field theories in dimensions other than four (see also 04.50 Gravity in more than four dimensions; 04.60.K Lower dimensional models in quantum gravity)
11.10.Lm Nonlinear or nonlocal theories and models (see also 11.27 Extended classical solutions; cosmic strings, domain walls, texture)
11.10.St Bound and unstable states; Bethe–Salpeter equations
11.10.Wx Finite-temperature field theory
Relativistic wave equations, see 03.65.P
11.15.-q Gauge field theories
11.15.Bt General properties of perturbation theory
11.15.Ex Spontaneous breaking of gauge symmetries
11.15.Ha Lattice gauge theory (see also 12.38.G Lattice QCD calculations)
11.15.Kc Classical and semiclassical techniques
11.15.Me Strong-coupling expansions
11.15.Pg Expansions for large numbers of components (e.g., 1/Nc expansions)
11.15.Tk Other nonperturbative techniques
11.25.-w Theory of fundamental strings
11.25.Db Properties of perturbation theory
11.25.Hf Conformal field theory, algebraic structures
11.25.Mj Compactification and four-dimensional models
11.25.Pm Noncritical string theory
11.25.Sq Nonperturbative techniques; string field theory
11.27.+d Extended classical solutions; cosmic strings, domain walls, texture (see also 98.80.C in cosmology)
11.30.-j Symmetry and conservation laws (see also 02.20 Group theory)
11.30.Cp Lorentz and Poincaré invariance
11.30.Er Charge conjugation, parity, time reversal, and other discrete symmetries
11.30.Fs Global symmetries (e.g., baryon number, lepton number)
11.30.Hv Flavor symmetries
11.30.Ly Other internal and higher symmetries
11.30.Na Nonlinear and dynamical symmetries (spectrum-generating symmetries)
11.30.Pb Supersymmetry (see also 12.60.J Supersymmetric models)
11.30.Qc Spontaneous and radiative symmetry breaking
11.30.Rd Chiral symmetries
11.40.-q Currents and their properties
11.40.Dw General theory of currents
11.40.Ex Formal properties of current algebras (see also 12.39.F Chiral Lagrangians)
11.40.Ha Partially conserved axial-vector currents
11.55.-m S-matrix theory; analytic structure of amplitudes
11.55.Bq Analytic properties of S matrix
11.55.Ds Exact S matrices
11.55.Fv Dispersion relations
11.55.Hx Sum rules
11.55.Jy Regge formalism (see also 12.40.N in strong interactions)
11.80.-m Relativistic scattering theory (see also 03.80 General theory of scattering)
11.80.Cr Kinematical properties (helicity and invariant amplitudes, kinematic singularities, etc.)
11.80.Et Partial-wave analysis
11.80.Fv Approximations (eikonal approximation, variational principles, etc.)
11.80.Gw Multichannel scattering
11.80.Jy Many-body scattering and Faddeev equation
11.80.La Multiple scattering
11.90.+t Other topics in general field and particle theory
12. Specific theories and interaction models; particle systematics
12.10.-g Unified field theories and models (see also 04.50—in general relativity and gravitation, 11.25.M Compactification and four-dimensional models)
12.10.Dm Unified theories and models of strong and electroweak interactions
12.10.Kt Unification of couplings; mass relations
12.15.-y Electroweak interactions
for extensions of gauge or Higgs sector, see 12.60.C or 12.60.F
12.15.Ff Quark and lepton masses and mixing (see also 14.60.P Neutrino mass and mixing)
12.15.Hh Determination of Kobayashi–Maskawa matrix elements
12.15.Ji Applications of electroweak models to specific processes
12.15.Lk Electroweak radiative corrections (see also 13.40.K Electromagnetic corrections to strong- and weak-interaction processes)
12.15.Mm Neutral currents
12.20.-m Quantum electrodynamics
12.20.Ds Specific calculations
12.20.Fv Experimental tests
12.38.-t Quantum chromodynamics
see also 24.85 Quarks, gluons, and QCD in nuclei and nuclear processes
12.38.Aw General properties of QCD (dynamics, confinement, etc.)
12.38.Bx Perturbative calculations
12.38.Cy Summation of perturbation theory
12.38.Gc Lattice QCD calculations (see also 11.15.H Lattice gauge theory)
12.38.Lg Other nonperturbative calculations
12.38.Mh Quark–gluon plasma
12.38.Qk Experimental tests
12.39.-x Phenomenological quark models
12.39.Ba Bag model
12.39.Dc Skyrmions
12.39.Fe Chiral Lagrangians
12.39.Hg Heavy quark effective theory
12.39.Jh Nonrelativistic quark model
12.39.Ki Relativistic quark model
12.39.Mk Glueball and nonstandard multi-quark/gluon states
12.39.Pn Potential models
12.40.-y Other models for strong interactions
12.40.Ee Statistical models
12.40.Nn Regge theory, duality, absorptive/optical models (see also 11.55.J Regge formalism)
12.40.Vv Vector-meson dominance
12.40.Yx Hadron mass models and calculations
12.60.-i Models beyond the standard model
see also 12.10 Unified field theories and models
12.60.Cn Extensions of electroweak gauge sector
12.60.Fr Extensions of electroweak Higgs sector
12.60.Jv Supersymmetric models (see also 04.65 Supergravity)
12.60.Nz Technicolor models
12.60.Rc Composite models
12.90.+b Miscellaneous theoretical ideas and models
13. Specific reactions and phenomenology
13.10.+q Weak and electromagnetic interactions of leptons (see also 13.35 Decays of leptons)
13.15.+g Neutrino interactions (for neutrino–lepton interactions, see 13.10)
13.20.-v Leptonic and semileptonic decays of mesons
13.20.Cz Decays of mesons
13.20.Eb Decays of K mesons
13.20.Fc Decays of charmed mesons
13.20.Gd Decays of J/ , , and other quarkonia
13.20.He Decays of bottom mesons
13.20.Jf Decays of other mesons
13.25.-k Hadronic decays of mesons
13.25.Cq Decays of mesons
13.25.Es Decays of K mesons
13.25.Ft Decays of charmed mesons
13.25.Gv Decays of J/ , , and other quarkonia
13.25.Hw Decays of bottom mesons
13.25.Jx Decays of other mesons
13.30.-a Decays of baryons
13.30.Ce Leptonic and semileptonic decays
13.30.Eg Hadronic decays
13.35.-r Decays of leptons
13.35.Bv Decays of muons
13.35.Dx Decays of taus
13.35.Hb Decays of heavy neutrinos
13.38.-b Decays of intermediate bosons
13.38.Be Decays of W bosons
13.38.Dg Decays of Z bosons
13.40.-f Electromagnetic processes and properties (see also 13.10 Weak and electromagnetic interactions of leptons)
13.40.Dk Electromagnetic mass differences
13.40.Em Electric and magnetic moments
13.40.Gp Electromagnetic form factors
13.40.Hq Electromagnetic decays
13.40.Ks Electromagnetic corrections to strong- and weak-interaction processes
13.60.-r Photon and charged-lepton interactions with hadrons (for neutrino interactions, see 13.15)
13.60.Fz Elastic and Compton scattering
13.60.Hb Total and inclusive cross sections (including deep-inelastic processes)
13.60.Le Meson production
13.60.Rj Baryon production
13.65.+i Hadron production by electron–positron collisions
13.75.-n Hadron-induced low- and intermediate-energy reactions and scattering (energy 10 GeV) (for higher energies, see 13.85)
13.75.Cs Nucleon–nucleon interactions (including antinucleons, deuterons, etc.) (for N–N interactions in nuclei, see 21.30)
13.75.Ev Hyperon–nucleon interactions
13.75.Gx Pion–baryon interactions
13.75.Jz Kaon–baryon interactions
13.75.Lb Meson–meson interactions
13.85.-t Hadron-induced high- and super-high-energy interactions (energy > 10 GeV) (for low energies, see 13.75)
13.85.Dz Elastic scattering
13.85.Fb Inelastic scattering: two-particle final states
13.85.Hd Inelastic scattering: many-particle final states
13.85.Lg Total cross sections
13.85.Ni Inclusive production with identified hadrons
13.85.Qk Inclusive production with identified leptons, photons, or other nonhadronic particles
13.85.Rm Limits on production of particles
13.85.Tp Cosmic-ray interactions (see also 96.40 Cosmic rays)
13.87.-a Jets in large-Q2 scattering
13.87.Ce Production
13.87.Fh Fragmentation into hadrons
13.88.+e Polarization in interactions and scattering
13.90.+i Other topics in specific reactions and phenomenology of elementary particles
14. Properties of specific particles
14.20.-c Baryons (including antiparticles)
14.20.Dh Protons and neutrons
14.20.Gk Baryon resonances with S=0
14.20.Jn Hyperons
14.20.Lq Charmed baryons
14.20.Mr Bottom baryons
14.20.Pt Dibaryons
14.40.-n Mesons
14.40.Aq , K, and mesons
14.40.Cs Other mesons with S=C=0, mass < 2.5 GeV
14.40.Ev Other strange mesons
14.40.Gx Mesons with S=C=B=0, mass > 2.5 GeV (including quarkonia)
14.40.Lb Charmed mesons
14.40.Nd Bottom mesons
14.60.-z Leptons
14.60.Cd Electrons (including positrons)
14.60.Ef Muons
14.60.Fg Taus
14.60.Hi Other charged heavy leptons
14.60.Lm Ordinary neutrinos ( e, µ, )
14.60.Pq Neutrino mass and mixing (see also 12.15.F Quark and lepton masses and mixing)
14.60.St Non-standard-model neutrinos, right-handed neutrinos, etc.
14.65.-q Quarks
14.65.Bt Light quarks
14.65.Dw Charmed quarks
14.65.Fy Bottom quarks
14.65.Ha Top quarks
14.70.-e Gauge bosons
14.70.Bh Photons
14.70.Dj Gluons
14.70.Fm W bosons
14.70.Hp Z bosons
14.70.Pw Other gauge bosons
14.80.-j Other particles (including hypothetical)
14.80.Bn Standard-model Higgs bosons
14.80.Cp Non-standard-model Higgs bosons
14.80.Hv Magnetic monopoles
14.80.Ly Supersymmetric partners of known particles
14.80.Mz Axions and other Nambu-Goldstone bosons (Majorons, familons, etc.)