ELECTROWEAK MODEL AND CONSTRAINTS ON NEW PHYSICS

Revised November 2013 by J. Erler （U. Mexico） and A. Freit＆s （Pittsburgh U.）.10.1 Introduction 10.2 Renormalization and radiative corrections

BOTTOM MESONS(B=±1)B^+=u,B^0=d,B^0=db,B^-=b,similarly for B~*'s

Many measurements of B decays involve admixtures of B hadrons. Previously we arbitrarily included such admixtures in the B±section, but because of their importance we have created two new sections：

N BARYONS(S=0,I=1/2)p,N^+=uud;n,N^0=udd

p MASS （atomic mass units u）The mass is known much more precisely in u （atomic mass units） than in MeV. See the next data block.

BOTTOM,CHARMED MESONS(B=C=±1)B_c^+=c,B_c^-=cb,similarly for B_c~*'s

I（JP） = 0（0-）I, J, P need confirmation.Quantum numbers shown are quark-model predictions.

REVIEW OF PARTICLE PHYSICS

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,283 new measurements from 899 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as heavy neutrinos, supersymmetric and technicolor particles, axions, dark photons, etc. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as Supersymmetry, Extra Dimensions, Particle Detectors, Probability, and Statistics. Among the 112 reviews are many that are new or heavily revised including those on： Dark Energy, Higgs Boson Physics, Electroweak Model, Neutrino Cross Section Measurements, Monte Carlo Neutrino Generators, Top Quark, Dark Matter, Dynamical Electroweak Symmetry Breaking, Accelerator Physics of Colliders, High-Energy Collider Parameters, Big Bang Nucleosynthesis, Astrophysical Constants and Cosmological Parameters. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review. All tables, listings, and reviews （and errata） are also available on the Particle Data Group website： http ：//pdg. lbl. gov.

CHARMED BARYONS(C=+1)∧_c^+=udc,∑_c^(++)=uuc,∑_c^+=udc,∑_c^0=ddc,≡_c^+=usc,≡_c^0=dsc,Ω_c^0=ssc

CHARMED BARYONS Revised March 2012 by C.G. Wohl （LBNL）. There are 17 known charmed baryons, and four other candidates not well enough established to be promoted to the Summary Tables.＊ Fig. l（a） shows the mass spectrum,

BOTTOM BARYONS(B=-1)∧_b^0=udb,≡_b^0=usb,≡_b^-=dsb,Ω_b^-=ssb

In the quark model, a ∧b0 is an isospin-0 udb state. The lowest ∧b0 ought to have JP = 1/2＋. None of I, J, or P have actually been measured.

∧ BARYONS(S=-1,I=0)∧~0=uds

We have omitted some results that have been superseded by later experiments. See our earlier editions.

ACCELERATOR PHYSICS OF COLLIDERS

Revised August 2013 by M.J. Syphers （MSU） and F. Zimmermann （CERN）.29.1. Luminosity This article provides background for the High-Energy Collider Parameter Tables that follow. The number of events, Nexp, is the product of the cross section of interest,

QUARK MODEL

Revised August 2013 by C. Amsler （University of Bern）, T. DeGrand （University of Colorado, Boulder）, and B. Krusche （University of Basel）.

BIG-BANG COSMOLOGY

Revised September 2013 by K.A. Olive （University of Minnesota） and J.A. Peacock （University of Edinburgh）.

COSMIC RAYS

Revised October 2013 by J.J. Beatty （Ohio State Univ.）, J. Matthews （Louisiana State Univ.）, and S.P. Wakely （Univ. of Chicago）; revised August 2009 by T.K. Gaisser and T. Stanev （Bartol Research Inst., Univ. of Delaware）.

HIGHLIGHTS OF THE 2014 EDITION OF THE REVIEW OF PARTICLE PHYSICS

899 new papers with 3283 new measurements Over 330 papers from LHC experiments （ATLAS, CMS, and LHCb）.

△BARYONS(S=0,I=3/2)△^(++)=uuu,△^+=uud,△~0=udd,△^-=ddd

Most of the results published before 1975 were last included in our 1982 edition, Physics Letters 111B 1 （1982）. Some further obsolete results published before 1984 were last included in our 2006 edition, Journal of Physics （generic for all A,B,E,G） G33 1 （2006）.

NEUTRINO BEAM LINES AT HIGH-ENERGY PROTON SYNCHROTRONS

Revised September 2013 with numbers verified by representatives of the synchrotrons （contact C.-J. Lin, LBNL）. For existing （future） neutrino beam lines the latest achieved （design） values are given.

≡BARYONS(S=-2,I=1/2)≡~0=uss,≡^-=dss

The parity has not actually been measured, but ＋ is of course expected.

ONLINE PARTICLE PHYSICS INFORMATION

1. IntroductionThe collection of online information resources in particle physics and related areas presented in this chapter is of necessity incomplete. An expanded and regularly updated online version can be found at：

∑BARYONS(S=-1,I=1)∑^+=uus,∑~0=uds,∑^-=dds

We have omitted some results that have been superseded by later experiments. See our earlier editions.

STATUS OF HIGGS BOSON PHYSICS

Written November 2013 by M. Carena （Fermi National Accelerator Laboratory and the University of Chicago）, C. Grojean （ICREA at IFAE, Universitat Autbnoma de Barcelona）, M, Kado （Laboratoire de l＇Accelerateur Lineaire, LAL and CERN）, and V. Sharma （University of California San Diego）.

SEARCHES FOR MONOPOLES, SUPERSYMMETRY, TECHNICOLOR, COMPOSITENESS, EXTRA DIMENSIONS, etc.

Magnetic Monopole SearchesIsolated supermassive monopole candidate events have not been confirmed. The most sensitive experiments obtain negative results.