Particle encodings according to the PEN Scheme

In tables below show how to encode the particles from the summary tables of particle properties in the ``Review of Particle Properties''[3] using the PEN convention. In the rightmost column we give the computer name of the particle, as defined by ``A guide to Experimental Elementary Particle Physics Literature (1985-1989)''[6]. This is the name to be used when searching the Particle Data group's databases. Notice that these names cannot be used either for TeX or SGML, as they do not satisfy the constraints of the PEN scheme as defined above. When a name is marked as ``not available'', sometimes a charged or neutral version exists (not given in the table).

The TeX implementation is available as a style file pennames.sty which should be input in the usual way at the start of the document for TeX or specified as a minor option on the &#;'134 documentstyle command for LaTeX. To obtain the symbol required, prefix the PEN name by a backslash (``&#;'134'').

The SGML implementation exists as a public entity set, that can be included in SGML documents with the following entity definition:

<!ENTITY % PEN PUBLIC
   "+//ISBN 92-9083-041-7::CERN//ENTITIES Particle Entity Names//EN">

Refer to a particle entity by prefixing its name by an ampersand (``&'') and suffixing it with a semi-colon (``;'').

Gauge and Higgs bosons

PEN symbol conventional name computer name

Pgg gamma GAMMA

PW W boson W

PWp W plus W+

PWm W minus W-

PZz Z zero Z

PHz Higgs zero not available

PHpm Higgs plus/minus HIGGS+-

PWR right-handed W not available

PWpr W prime WPRIME

PZLR left-right handed Z not available

PZgc Z chi not available

PZgy Z psi not available

PZge Z eta not available

PZi Z one not available

PAz axion AXION

Leptons

PEN symbol conventional name computer name

Pgne electron neutrino NUE

Pagne anti electron neutrino NUEBAR

Pgngm muon neutrino NUMU

Pagngm anti muon neutrino NUMUBAR

Pgngt tau neutrino NUTAU

Pagngt anti tau neutrino NUTAUBAR

Pe electron not available

Pep positron E+

Pem e minus E-

Pgm muon not available

Pgmm mu minus MU-

Pgmp mu plus MU+

Pgt tau not available

PLpm charged lepton LEPTON+-

PLz stable neutral heavy lepton not available

PEz neutral para- or ortho-lepton not available

Light Unflavored Mesons (S=C=B=0)

PEN symbol conventional name computer name

Pgp pion PI

Pgpm pi minus PI-

Pgpp pi plus PI+

Pgppm pi plus/minus PI+-

Pgpz pi zero PI0

Pgh eta ETA

Pgr rho RHO(770)

Pgo omega OMEGA(783)

Pghpr eta prime ETAPRIME(958)

Pfz f zero F0(975)

Paz a zero A0(980)

Pgf phi PHI(1020)

Phia h one H1(1170)

Pbi b one not available

Pai a one A1(1260)

Pfii f two F2(1270)

Pfi f one F1(1285)

Pgha eta 1295 ETA(1295)

Pgpa pion 1300 not available

Paii a two A2(1320)

Pgoa omega 1390 not available

Pfza f zero 1400 F0(1400)

Pfia f one 1420 F1(1420)

Pghb eta 1440 ETA(1440)

Pgra rho 1450 not available

Pfib f one 1510 F1(1510)

Pfiipr f two prime F2PRIME(1525)

Pfzb f zero 1590 F0(1590)

Pgob omega 1600 not available

Pgoiii omega three OMEGA3(1670)

Pgpii pi two PI2(1670)

Pgfa phi 1680 PHI(1680)

Pgriii rho three not available

Pgrb rho 1700 RHO(1700)

Pfiia f two 1720 F2(1720)

Pgfiii phi three PHI3(1850)

Pfiib f two 2010 F2(2010)

Pfiv f four F4(2050)

Pfiic f two 2300 F2(2300)

Pfiid f two 2340 F2(2340)

Strange Mesons (S=+1 or S=-1, C=B=0)

PEN symbol conventional name computer name

PK kaon K

PKpm K plus minus K+-

PKp K plus K+

PKm K minus K-

PKz K zero K0

PaKz anti K-zero KBAR0

PKgmiii K mu three not available

PKeiii K e three not available

PKzS K zero short not available

PKzL K zero long not available

PKzgmiii K zero mu three not available

PKzeiii K zero e three not available

PKst K star not available

PKi K one K1(1270)

PKsta K star (1370) not available

PKia K one (1400) not available

PKstz K star zero (1430) not available

PKstii K star two (1430) not available

PKstb K star (1680) not available

PKii K two (1770) not available

PKstiii K star three not available

PKstiv K star four not available

Charmed Mesons (C=+1 or C=-1)

PEN symbol conventional name computer name

PD D D

PaD anti D DBAR

PDpm D plus/minus D+-

PDm D minus D-

PDp D plus D+

PDz D zero D0

PaDz anti D zero DBAR0

PDstpm D star plus/minus D*(2010)+-

PDstz D star zero D*(2010)0

PDiz D one zero D1(2420)0

PDstiiz D star two zero D2*(2460)0

Charmed Strange Mesons (C=1 or C=-1, S=1 or S=-1)

PEN symbol conventional name computer name

PsDp D s plus D/S+

PsDm D s minus D/S-

PsDst D s star D/S*

PsDipm D s one plus/minus not available

Bottom Mesons (B=1 or B=-1)

PEN symbol conventional name computer name

PB B B

PBp B plus B+

PBm B minus B-

PBpm B plus/minus B+-

PBz B zero B0

PaB anti B BBAR

PaBz anti B zero BBAR0

Pcgh eta c ETA/C(1S)

PJgy J psi J/PSI(1S)

Pcgcz chi c zero CHI/C0(1P)

Pcgci chi c one CHI/C1(1P)

Pcgcii chi c two CHI/C2(1P)

Pgy psi PSI(2S)

Pgya psi 3770 PSI(3770)

Pgyb psi 4040 PSI(4040)

Pgyc psi 4160 PSI(4160)

Pgyd psi 4415 PSI(4415)

Pbgcz chi b zero CHI/B0(1P)

Pbgci chi b one CHI/B1(1P)

Pbgcii chi b two CHI/B2(1P)

Pbgcza chi b zero (2P) CHI/B0(2P)

Pbgcia chi b one (2P) CHI/B1(2P)

Pbgciia chi b two (2P) CHI/B2(2P)

PgU Upsilon Upsilon

PgUa Upsilon (1S) UPSI(1S)

PgUb Upsilon (2S) UPSI(2S)

PgUc Upsilon (3S) UPSI(3S)

PgUd Upsilon (4S) UPSI(4S)

PgUe Upsilon (10860) UPSI(10860)

PgUf Upsilon (11020) UPSI(11020)

Quarks

PEN symbol conventional name computer name

Pq quark QUARK

Paq anti-quark QUARKBAR

Pqd down quark DQ

Paqd anti down quark DQBAR

Pqu up quark UQ

Paqu anti up quark UQBAR

Pqs strange quark SQ

Paqs anti strange quark SQBAR

Pqc charmed quark CQ

Paqc anti charmed quark CQBAR

Pqb bottom quark BQ

Paqb anti bottom quark BQBAR

Pqt top quark TQ

Paqt anti top quark TQBAR

N Baryons (S=0, I=1/2)

PEN symbol conventional name computer name

PN nucleon nucleon

Pp proton P

Pap anti-proton PBAR

Pn neutron N

PNa N (1440) P 11 N(1440P11)

PNb N (1520) D 13 not available

PNc N (1535) S 11 not available

PNd N (1650) S 11 not available

PNe N (1675) D 15 not available

PNf N (1680) F 15 not available

PNg N (1700) D 13 not available

PNh N (1710) P 11 not available

PNi N (1720) P 13 not available

PNj N (2190) G 17 not available

PNk N (2220) H 19 not available

PNl N (2250) G 19 not available

PNm N (2600) I 1,11 not available

Baryons (S=0, I=3/2)

PEN symbol conventional name computer name

PgD Delta not available

PgDa Delta (1232) P 33 DELTA(1232P33)

PgDb Delta (1620) S 31 not available

PgDc Delta (1700) D 33 not available

PgDd Delta (1900) S 31 not available

PgDe Delta (1905) F 35 not available

PgDf Delta (1910) P 31 not available

PgDh Delta (1920) P 33 not available

PgDi Delta (1930) D 35 not available

PgDj Delta (1950) F 37 not available

PgDk Delta (2420) H 3,11 not available

Baryons (S=-1, I=0)

PEN symbol conventional name computer name

PgL Lambda LAMBDA

PagL anti Lambda LAMBDABAR

PgLa Lambda (1405) S 01 LAMBDA(1405S01)

PgLb Lambda (1520) D 03 LAMBDA(1520D03)

PgLc Lambda (1600) P 01 not available

PgLd Lambda (1670) S 01 not available

PgLe Lambda (1690) D 03 not available

PgLf Lambda (1800) S 01 not available

PgLg Lambda (1810) P 01 not available

PgLh Lambda (1820) F 05 not available

PgLi Lambda (1830) D 05 not available

PgLj Lambda (1890) P 03 not available

PgLk Lambda (2100) G 07 not available

PgLl Lambda (2110) F 05 not available

PgLm Lambda (2350) H 09 not available

Baryons (S=-1, I=1)

PEN symbol conventional name computer name

PgS Sigma SIGMA

PgSm Sigma minus SIGMA-

PgSp Sigma plus SIGMA+

PagSm anti Sigma minus SIGMABAR-

PagSp anti Sigma plus SIGMABAR+

PgSz Sigma zero SIGMA0

PagSz anti Sigma zero SIGMABAR0

PgSa Sigma (1385) P 13 not available

PgSb Sigma (1660) P 11 not available

PgSc Sigma (1670) D 13 not available

PgSd Sigma (1750) S 11 not available

PgSe Sigma (1775) D 15 not available

PgSf Sigma (1915) F 15 not available

PgSg Sigma (1940) D 13 not available

PgSh Sigma (2030) F 17 not available

PgSi Sigma (2250) not available

Baryons (S=-2, I=1/2)

PEN symbol conventional name computer name

PgX Xi XI

PgXz Xi zero XI0

PagXz anti Xi zero XIBAR0

PgXm Xi minus XI-

PagXp anti Xi plus XIBAR+

PgXa Xi (1530) P 13 not available

PgXb Xi (1690) not available

PgXc Xi (1820) D 13 not available

PgXd Xi (1950) not available

PgXe Xi (2030) not available

Baryons (S=-3, I=0)

PEN symbol conventional name computer name

PgO Omega OMEGA

PgOm Omega minus OMEGA-

PagOp anti Omega plus OMEGABAR+

PgOma Omega (2250) minus OMEGA(2250)-

Charmed Baryons (C=+1)

PEN symbol conventional name computer name

PcgLp charmed Lambda plus LAMBDA/C+

PcgXz charmed Xi zero not available

PcgXp charmed Xi plus not available

PcgS charmed Sigma (2455) not available

Supersymmetric Particles

PEN symbol conventional name computer name

PSgg photino PHOTINO

PSgxz neutralino NEUTRALINO

PSZz supersymmetric Z zero ZINO

PSHz Higgsino HIGGSINO

PSgxpm chargino CHARGINO

PSWpm supersymmetric W +- not available

PSHpm charged Higgsino not available

PSgn scalar neutrino not available

PSe scalar electron not available

PSgm scalar muon not available

PSgt scalar tau not available

PSq scalar quark SQUARK

PaSq scalar anti quark SQUARKBAR

PSg gluino GLUINO

The files can be obtained as follows:

pennames.sty

definitions for the particle names with TeX;

pennames.entities

SGML entity definitions;

pennames.ps

PostScript source of document describing the PEN scheme.

Please send comments or suggestions to goossens@cern.ch.