Measurement of the branching fraction for τ→ρν

Autor: Abrams, GS, Alam, MS, Blocker, CA, Boyarski, AM, Breidenbach, M, Burke, DL, Carithers, WC, Chinowsky, W, Coles, MW, Cooper, S, Couchman, B, Dieterle, WE, Dillon, JB, Dorenbosch, J, Dorfan, JM, Eaton, MW, Feldman, GJ, Fischer, HG, Franklin, MEB, Gidal, G, Goldhaber, G, Hanson, G, Hayes, KG, Himel, T, Hitlin, DG, Hollebeek, RJ, Innes, WR, Jaros, J, Jenni, P, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, Luth, V, Martin, JF, Millikan, RE, Nelson, ME, Pang, CY, Patrick, JF, Perl, ML, Richter, B, Scharre, DL, Schindler, RH, Schwitters, RF, Shannon, SR, Siegrist, JL, Strait, J, Taureg, H

Publikováno v: Abrams, GS; Alam, MS; Blocker, CA; Boyarski, AM; Breidenbach, M; Burke, DL; et al.(1979). Measurement of the branching fraction for τ→ρν. Physical Review Letters, 43(21), 1555-1558. doi: 10.1103/PhysRevLett.43.1555. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/2zt7j9b0

This Letter presents a measurement of the decay τ-→ρ-ντ using data obtained with the Mark II detector at SPEAR. In the center-of-mass energy region 4.5

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http://www.escholarship.org/uc/item/2zt7j9b0

Limits on J ψ and Υ{hooked} production in e+e-interactions at s = 29 GeV

Autor: Matteuzzi, C, Abrams, GS, Amidei, D, Blocker, CA, Boyarski, AM, Breidenbach, M, Burke, DL, Chinowsky, W, Dieterle, WE, Dillon, JB, Dorfan, JM, Eaton, MW, Feldman, GJ, Granklin, MEB, Gidal, G, Gladney, L, Gold, MS, Goldhaber, G, Golding, LJ, Hanson, G, Hollebeek, RJ, Innes, WR, Jaros, JA, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, LeClaire, B, Levi, M, Lockyer, N, Lüth, V, Nelson, ME, Patrick, JF, Perl, ML

Publikováno v: Matteuzzi, C; Abrams, GS; Amidei, D; Blocker, CA; Boyarski, AM; Breidenbach, M; et al.(1983). Limits on J ψ and Υ{hooked} production in e+e-interactions at s = 29 GeV. Physics Letters B, 129(1-2), 141-144. doi: 10.1016/0370-2693(83)90745-1. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/5vx8p6s0

A search has been made for the inclusive production of J ψ (3.1) and Υ{hooked} (9.4) mesons in e+e-interactions at 29 GeV, via their decay into two leptons. No signal is observed in the J ψ region, nor in the Υ{hooked} region. The limits on the c

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http://www.escholarship.org/uc/item/5vx8p6s0

Observation of Cabibbo-suppressed decay D0-+ and D0K-K+

Autor: Abrams, GS, Alam, MS, Blocker, CA, Boyarski, AM, Breidenbach, M, Broll, CH, 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, Lke, D, Lth, V, Millikan, RE, Nelson, ME, Pang, CY, Patrick, JF, Perl, ML, Richter, B, Russell, JJ, Scharre, DL, Schindler, RH, Schwitters, RF, Siegrist, JL, Strait, J, Taureg, H, Tonutti, M

Publikováno v: Abrams, GS; Alam, MS; Blocker, CA; Boyarski, AM; Breidenbach, M; Broll, CH; et al.(1979). Observation of Cabibbo-suppressed decay D0-+ and D0K-K+. Physical Review Letters, 43(7), 481-483. doi: 10.1103/PhysRevLett.43.481. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/8tf8v75c

The D Cabibbo-suppressed decay modes -+ and K-K+ have been observed and the following ratios of D partial decay widths have been measured: (D-+)(DK-+)=0.0330.015 and (DK-K+)(DK-+)=0.1130.030. © 1979 The American Physical Society.

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http://www.escholarship.org/uc/item/8tf8v75c

Measurement of γγψ final states in ψ′ decay

Autor: Himel, TM, Abrams, GS, Alam, MS, Blocker, CA, 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, Hitlin, DG, Hollebeek, RJ, Innes, WR, Jaros, JA, Jenni, P, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, Levi, ME, 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

Publikováno v: Himel, TM; Abrams, GS; Alam, MS; Blocker, CA; Boyarski, AM; Breidenbach, M; et al.(1980). Measurement of γγψ final states in ψ′ decay. Physical Review Letters, 44(14), 920-923. doi: 10.1103/PhysRevLett.44.920. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/4cw8876q

The decay mode ψ′→γγψ has been studied with the Mark-II detector at SPEAR. New measurements of branching ratios for decays of the type ψ′→γχ, χ→γψ involving known χ states are presented. The existence of a χ state of mass near 3

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Variation of the strong coupling constant from a measurement of the jet energy spread in e+e-annihilation

Autor: Löhr, B, Hollebeek, RJ, Richter, B, Schlatter, D, Abrams, GS, Amidei, D, Blocker, CA, Boyarski, AM, Breidenbach, M, Burke, DL, Dieterle, WE, Dillon, JB, Dorfan, JM, Eaton, MW, Feldman, GJ, Franklin, MEB, Gidal, G, Gladney, L, Gold, MS, Goldhaber, G, Golding, LJ, Hanson, G, Innes, WR, Jaros, JA, Johnson, AD, Kadyk, JA, Lankford, AJ, Larsen, RR, LeClaire, B, Levi, M, Lockyer, N, Lüth, V, Matteuzzi, C, Nelson, ME

Publikováno v: Löhr, B; Hollebeek, RJ; Richter, B; Schlatter, D; Abrams, GS; Amidei, D; et al.(1983). Variation of the strong coupling constant from a measurement of the jet energy spread in e+e-annihilation. Physics Letters B, 122(1), 90-94. doi: 10.1016/0370-2693(83)91175-9. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/8251m2vn

A measurement of jet energy spread in the reaction e+e-→ hadrons is presented. Using a jet calculus model for the jet development we determine the variation of the strong coupling constant with respect to momentum transfer. The observed variation i

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