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1. Review of Particle Physics

Author

Group, Particle Data, Eidelman, S, Hayes, KG, Olive, KA, Aguilar-Benitez, M, Amsler, C, Asner, D, Babu, KS, Barnett, RM, Beringer, J, Burchat, PR, Carone, CD, Caso, S, Conforto, G, Dahl, O, D'Ambrosio, G, Doser, M, Feng, JL, Gherghetta, T, Gibbons, L, Goodman, M, Grab, C, Groom, DE, Gurtu, A, Hagiwara, K, Hernández-Rey, JJ, Hikasa, K, Honscheid, K, Jawahery, H, Kolda, C, Kwon, Y, Mangano, ML, Manohar, AV, March-Russell, J, Masoni, A, Miquel, R, Mönig, K, Murayama, H, Nakamura, K, Navas, S, Pape, L, Patrignani, C, Piepke, A, Raffelt, G, Roos, M, Tanabashi, M, Terning, J, Törnqvist, NA, Trippe, TG, Vogel, P, Wohl, CG, Workman, RL, Yao, W-M, Zyla, PA, Armstrong, B, Gee, PS, Harper, G, Lugovsky, KS, Lugovsky, SB, Lugovsky, VS, Rom, A, Artuso, M, Barberio, E, Battaglia, M, Bichsel, H, Biebel, O, Bloch, P, Cahn, RN, Casper, D, Cattai, A, Chivukula, RS, Cowan, G, Damour, T, Desler, K, Dobbs, MA, Drees, M, Edwards, A, Edwards, DA, Elvira, VD, Erler, J, Ezhela, VV, Fetscher, W, Fields, BD, Foster, B, Froidevaux, D, Fukugita, M, Gaisser, TK, Garren, L, Gerber, H-J, Gerbier, G, Gilman, FJ, Haber, HE, Hagmann, C, Hewett, J, Hinchliffe, I, Hogan, CJ, Höhler, G, Igo-Kemenes, P, Jackson, JD, and Johnson, KF

Subjects
Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract

This biennial Review summarizes much of Particle Physics. Using data from previous editions, plus 1726 new measurements from 512 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We also summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. 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 the Standard Model, particle detectors, probability, and statistics. Among the 119 reviews are many that are new or heavily revised including those on neutrino mixing, CP violation in K, D, and B mesons, Vcb, the new exotic Θ(1540) particle, extra-dimensions, grand unified theories, cosmic background radiation, dark matter, cosmological parameters, and big bang cosmology. A booklet is available containing the Summary Tables and abbreviated versions ofsome 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. ©2004 Regents of the University of California.

Published
2004

2. Pion pair production in photon-photon collisions at spear

Author

Roussarie, A, Burke, DL, Abrams, GS, Alam, MS, Blocker, CA, Blondel, A, Boyarski, AM, Breidenbach, M, Carithers, WC, Chinowsky, W, Coles, MW, Cooper, S, Dieterle, WE, Dillon, JB, Dorenbosch, J, Dorfan, JM, Eaton, MW, Feldman, GJ, Franklin, MEB, Gidal, G, Goldhaber, G, Hanson, G, Hayes, KG, Himel, T, Hitlin, DG, Hollebeek, RJ, Innes, WR, Jaros, JA, Jenni, P, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, Levi, M, Lüth, V, Millikan, RE, Nelson, ME, Pang, CY, Patrick, JF, Perl, ML, Richter, B, Scharre, DL, Schindler, RH, Schwitters, RF, Siegrist, JL, Strait, J, Taureg, H, Tonutti, M, Trilling, GH, Vella, EN, Vidal, RA, Videau, I, Weiss, JM, and Zaccone, H

Subjects
Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract

We report a measurement of the cross section for the process γγ→π+π- at invariant masses 500 MeV/c2 < mππ

Published
1981

3. A study of the decayτ−→π−μτ

Author

Blocker, CA, Dorfan, JM, Abrams, GS, Alam, MS, Blondel, A, Boyarski, AM, Breidenbach, M, Burke, DL, Carithers, WC, Chinowsky, W, Coles, MW, Cooper, S, Dieterle, WE, Dillon, JB, Dorenbosch, J, Eaton, MW, Feldman, GJ, Franklin, MEB, Gidal, G, Goldhaber, G, Hanson, G, Hayes, KG, Himel, T, Hitlin, DG, Hollebeek, RJ, Innes, WR, Jaros, JA, Jenni, P, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, Levi, M, Lu¨th, V, Millikan, RE, Nelson, ME, Pang, CY, Patrick, JF, Perl, ML, Richter, B, Roussarie, A, Scharre, DL, Schindler, RH, Schwitters, RF, Siegrist, JL, Strait, J, Taureg, H, Tonutti, M, Trilling, GH, Vella, EN, Vidal, RA, Videau, I, Weiss, JM, and Zaccone, H

Subjects
Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract

We present a high statistics measurement of the branching ratio for the decay τ-→π-μτ using data obtained with the Mark II detector at the SLAC e+e- storage ring SPEAR. We have used events from the center-of-mass energy region 3.52 to 6.7 GeV to determine that B(τ-→π-μτ)=0.117±0.004±0.018. From electron-muon events in the same data sample, we have determined that B(τ-→π-μτ) B(τ-→e--μeμτ)=0.66±0.03±0.11. We present measurements of the mass and spin of the τ and the mass of the τ neutrino based, for the first time, on a hadronic decay mode of the τ. © 1982.

Published
1982

4. A measurement of the cross section for four-pion production in λλ collisions at spear

Author

Burke, DL, Abrams, GS, Alam, MS, Blocker, CA, Blondel, A, Boyarski, AM, Breidenbach, M, Carithers, WC, Chinowsky, W, Coles, MW, Cooper, S, Dieterle, WE, Dillon, JB, Dorenbosch, J, Dorfan, JM, Eaton, MW, Feldman, GJ, Franklin, MEB, Gidal, G, Goldhaber, G, Hanson, G, Hayes, KG, Himel, T, Hitlin, DG, Hollebeek, RJ, Innes, WR, Jaros, JA, Jenni, P, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, Levi, M, Lüth, V, Millikan, RE, Nelson, ME, Pang, CY, Patrick, JF, Perl, ML, Richter, B, Roussarie, A, Scharre, DL, Schindler, RH, Schwitters, RF, Siegrist, JL, Strait, J, Taureg, H, Tonutti, M, Trilling, GH, Vella, EN, Vidal, RA, Videau, I, Weiss, JM, and Zaccone, H

Subjects
Mathematical Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract

We present a measurement of the cross section for the reaction e+e- → e+e-π+π-π+π-at SPEAR. This channel is found to be large and dominated by the process γγ → ρ{variant}0ρ{variant}0 → π+π-π+π-. The cross section, which is small just above the four-pion threshold, exhibits a large enhancement near the ρ{variant}0ρ{variant}0 threshold. © 1981.

Published
1981

5. Pion pair production in photon-photon collisions at spear

Author

Roussarie, A, Burke, DL, Abrams, GS, Alam, MS, Blocker, CA, Blondel, A, Boyarski, AM, Breidenbach, M, Carithers, WC, Chinowsky, W, Coles, MW, Cooper, S, Dieterle, WE, Dillon, JB, Dorenbosch, J, Dorfan, JM, Eaton, MW, Feldman, GJ, Franklin, MEB, Gidal, G, Goldhaber, G, Hanson, G, Hayes, KG, Himel, T, Hitlin, DG, Hollebeek, RJ, Innes, WR, Jaros, JA, Jenni, P, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, Levi, M, Lüth, V, Millikan, RE, Nelson, ME, Pang, CY, Patrick, JF, Perl, ML, Richter, B, Scharre, DL, Schindler, RH, Schwitters, RF, Siegrist, JL, Strait, J, Taureg, H, Tonutti, M, Trilling, GH, Vella, EN, Vidal, RA, Videau, I, Weiss, JM, and Zaccone, H

Subjects
Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Astronomical and Space Sciences, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

We report a measurement of the cross section for the process γγ→π+π- at invariant masses 500 MeV/c2 < mππ

Published
1981

6. A measurement of the cross section for four-pion production in λλ collisions at spear

Author

Burke, DL, Abrams, GS, Alam, MS, Blocker, CA, Blondel, A, Boyarski, AM, Breidenbach, M, Carithers, WC, Chinowsky, W, Coles, MW, Cooper, S, Dieterle, WE, Dillon, JB, Dorenbosch, J, Dorfan, JM, Eaton, MW, Feldman, GJ, Franklin, MEB, Gidal, G, Goldhaber, G, Hanson, G, Hayes, KG, Himel, T, Hitlin, DG, Hollebeek, RJ, Innes, WR, Jaros, JA, Jenni, P, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, Levi, M, Lüth, V, Millikan, RE, Nelson, ME, Pang, CY, Patrick, JF, Perl, ML, Richter, B, Roussarie, A, Scharre, DL, Schindler, RH, Schwitters, RF, Siegrist, JL, Strait, J, Taureg, H, Tonutti, M, Trilling, GH, Vella, EN, Vidal, RA, Videau, I, Weiss, JM, and Zaccone, H

Subjects
Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Astronomical and Space Sciences, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

We present a measurement of the cross section for the reaction e+e- → e+e-π+π-π+π-at SPEAR. This channel is found to be large and dominated by the process γγ → ρ{variant}0ρ{variant}0 → π+π-π+π-. The cross section, which is small just above the four-pion threshold, exhibits a large enhancement near the ρ{variant}0ρ{variant}0 threshold. © 1981.

Published
1981

7. Observation of the radiative transition ψ → γE(1420)

Author

Scharre, DL, Trilling, GH, Abrams, GS, Alam, MS, Blocker, CA, Blondel, A, Boyarski, AM, Breidenbach, M, Burke, DL, Carithers, WC, Chinowsky, W, Coles, MW, Cooper, S, Dieterle, WE, Dillon, JB, Dorenbosch, J, Dorfan, JM, Eaton, MW, Feldman, GJ, Franklin, MEB, Gidal, G, Goldhaber, G, Hanson, G, Hayes, KG, Himel, T, Hitlin, DG, Hollebeek, RJ, Innes, WR, Jaros, JA, Jenni, P, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, Lüth, V, Millikan, RE, Nelson, ME, Pang, CY, Patrick, JF, Perl, ML, Richter, B, Roussarie, A, Schindler, RH, Schwitters, RF, Siegrist, JL, Strait, J, Taureg, H, Tonutti, M, Vella, EN, Vidal, RA, Videau, I, Weiss, JM, and Zaccone, H

Subjects
Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Astronomical and Space Sciences, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

We have observed a radiative transition from the ψ to a state decaying into KSK±π∓, with mass M = 1.44-0.015+0.01 GeV/c2 and width Γ = 0.05-0.02+0.03 GeV/c2. We tentatively identify this state as the E(1420). Assuming that this state is an isospin singlet, we have determined the branching fraction product B(ψ → γE) × B(E × KKπ) = (3.6 ± 1.4) × 10-3. © 1980.

Published
1980

8. A study of the decay τ-→π-μτ

Author

Blocker, CA, Dorfan, JM, Abrams, GS, Alam, MS, Blondel, A, Boyarski, AM, Breidenbach, M, Burke, DL, Carithers, WC, Chinowsky, W, Coles, MW, Cooper, S, Dieterle, WE, Dillon, JB, Dorenbosch, J, Eaton, MW, Feldman, GJ, Franklin, MEB, Gidal, G, Goldhaber, G, Hanson, G, Hayes, KG, Himel, T, Hitlin, DG, Hollebeek, RJ, Innes, WR, Jaros, JA, Jenni, P, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, Levi, M, Lüth, V, Millikan, RE, Nelson, ME, Pang, CY, Patrick, JF, Perl, ML, Richter, B, Roussarie, A, Scharre, DL, Schindler, RH, Schwitters, RF, Siegrist, JL, Strait, J, Taureg, H, Tonutti, M, Trilling, GH, Vella, EN, Vidal, RA, Videau, I, Weiss, JM, and Zaccone, H

Subjects
Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Astronomical and Space Sciences, Mathematical Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

We present a high statistics measurement of the branching ratio for the decay τ-→π-μτ using data obtained with the Mark II detector at the SLAC e+e- storage ring SPEAR. We have used events from the center-of-mass energy region 3.52 to 6.7 GeV to determine that B(τ-→π-μτ)=0.117±0.004±0.018. From electron-muon events in the same data sample, we have determined that B(τ-→π-μτ) B(τ-→e--μeμτ)=0.66±0.03±0.11. We present measurements of the mass and spin of the τ and the mass of the τ neutrino based, for the first time, on a hadronic decay mode of the τ. © 1982.

Published
1982

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