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112 results on '"Eilerts, S"'

1. Experimental determination of the complete spin structure for anti-proton + proton -> anti-\Lambda + \Lambda at anti-proton beam momentum of 1.637 GeV/c

Author

The PS185 collaboration, Paschke, K . D., Quinn, B., Berdoz, A., Franklin, G. B., Khaustov, P., Meyer, C. A., Bradtke, C., Gehring, R., Goertz, S., Harmsen, J., Meier, A., Meyer, W., Radtke, E., Reicherz, G., Dutz, H., Pluckthun, M., Schoch, B., Dennert, H., Eyrich, W., Hauffe, J., Metzger, A., Moosburger, M., Stinzing, F., Wirth, St., Fischer, H., Franz, J., Heinsius, F. H., Kriegler, E., Schmitt, H., Bunker, B., Hertzog, D., Jones, T., Tayloe, R., Broders, R., Geyer, R., Kilian, K., Oelert, W., Rohrich, K., Sachs, K., Sefzick, T., Bassalleck, B., Eilerts, S., Fields, D. E., Kingsberry, P., Lowe, J., Stotzer, R., Johansson, T., and Pomp, S.

Subjects
Nuclear Experiment
Abstract

The reaction anti-proton + proton -> anti-\Lambda + \Lambda -> anti-proton + \pi^+ + proton + \pi^- has been measured with high statistics at anti-proton beam momentum of 1.637 GeV/c. The use of a transversely-polarized frozen-spin target combined with the self-analyzing property of \Lambda/anti-\Lambda decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering matrix can be written in terms of eleven real parameters for each bin of scattering angle, each of these parameters is determined with reasonable precision. From these results all conceivable spin-correlations are determined with inherent self-consistency. Good agreement is found with the few previously existing measurements of spin observables in anti-proton + proton -> anti-\Lambda + \Lambda near this energy. Existing theoretical models do not give good predictions for those spin-observables that had not been previously measured., Comment: To be published in Phys. Rev. C. Tables of results (i.e. Ref. 24) are available at http://www-meg.phys.cmu.edu/~bquinn/ps185_pub/results.tab 24 pages, 16 figures

Published
2006
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2. First observation of the decay K+ -> e+ nu mu+ mu-

Author

Ma, H., Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D. R., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Herold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., Lichard, P., Lowe, J., Lozano, J., Majid, W., Pislak, S., Poblaguev, A. A., Rehak, P., Sher, A., Thompson, J. A., Truoel, P., and Zeller, M. E.

Subjects
High Energy Physics - Experiment
Abstract

Experiment 865 at the Brookhaven AGS has observed the decay K^+ -> e^+ nu mu^+ mu^-. The branching ratio extracted is (1.72 +/- 0.37(stat) +/- 0.17(syst) +/- 0.19(model)) x 10^{-8} where the third term in the error results from the use of a model to extrapolate into a kinematic region dominated by background., Comment: 4 pages, 6 figures, Revtex4. Correction to figure and minor text changes

Published
2005
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3. An Improved upper limit on the decay K^+ -> pi^+ mu^+ e^-

Author

Sher, Aleksey, Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D. R., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Harold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., Lichard, P., Lowe, J., Lozano, J., Ma, H., Majid, W., Pislak, S., Poblaguev, A. A., Rehak, P., Sher, A., Thompson, J. A., Truoel, P., and Zeller, M. E.

Subjects
High Energy Physics - Experiment
Abstract

Based on results of a search for the lepton-family-number-violating decay $K^+ \to \pi^+\mu^+ e^-$ with data collected by experiment E865 at the Alternating Gradient Synchrotron of Brookhaven National Laboratory, we place an upper limit on the branching ratio at $2.1 \times 10^{-11}$ (90% C.L.). Combining the results with earlier E865 data and those of a previous experiment, E777, an upper limit on the branching ratio of $1.3 \times 10^{-11}$ (90% C.L.) is obtained., Comment: v2: 13 pages, submitted to the Phys. Rev. D v3: 13 pages, resubmitted to Phys. Rev. D (corrections include: a more detailed overview of the combined analysis of the available experimntal data)

Published
2005
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4. New, high statistics measurement of the K+ -> pi0 e+ nu (Ke3) branching ratio

Author

Sher, A., Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D. R., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Fischer, H., Herold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., Lichard, P., Lowe, J., Lozano, J., Ma, H., Majid, W., Pislak, S., Poblaguev, A. A., Rehak, P., Sher, Aleksey, Thompson, J. A., Truol, P., and Zeller, M. E.

Subjects
High Energy Physics - Experiment
Abstract

E865 at the Brookhaven National Laboratory AGS collected about 70,000 K+(e3) events with the purpose of measuring the relative K+(e3) branching ratio. The pi0 in all the decays was detected using the e+e- pair from pi0 -> e+e-gamma decay and no photons were required. Using the Particle Data Group branching ratios for the normalization decays we obtain BR(K+(e3(gamma))=(5.13+/-0.02(stat)+/-0.09(sys)+/-0.04(norm))%, where $K+(e3(gamma)) includes the effect of virtual and real photons. This result is 2.3 sigma higher than the current Particle Data Group value. The implications of this result for the $V_{us}$ element of the CKM matrix, and the matrix's unitarity are discussed., Comment: 4 pages, 5 figures; final version accepted by PRL

Published
2003
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5. High statistics measurement of Ke4 decay properties

Author

Pislak, S., Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D. R., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Fischer, H., Herold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., Lichard, P., Lowe, J., Lozano, J., Ma, H., Majid, W., Poblaguev, A. A., Rehak, P., Sher, A., Sher, Aleksey, Thompson, J. A., Truöl, P., and Zeller, M. E.

Subjects
High Energy Physics - Experiment
Abstract

We report experimental details and results of a new measurement of the decay K+ -> pi+pi-e+nue (Ke4}. A sample of more than 400,000 Ke4 events with low background has been collected by Experiment 865 at the Brookhaven Alternate Gradient Synchrotron. From these data, the branching ratio (4.11+-0.01+-0.11)*10**(-5) and the pi-pi invariant mass dependence of the form factors F, G, and H of the weak hadronic current as well as the phase shift difference delta00-delta11 for pi-pi-scattering were extracted. Using constraints based on analyticity and chiral symmetry, a new value with considerably improved accuracy for the s-wave pi-pi-scattering length a00 has been obtained also: a00=0.216+-0.013 (stat.)+-0.002(syst.)+-0.002(theor.)., Comment: 15 pages, 10 figures, submitted to Phys. Rev. D

Published
2003
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6. Measurement of Analyzing Power for Proton-Carbon Elastic Scattering in the Coulomb-Nuclear Interference Region with a 22-GeV/c Polarized Proton Beam

Author

Tojo, J., Alekseev, I., Bai, M., Bassalleck, B., Bunce, G., Deshpande, A., Doskow, J., Eilerts, S., Fields, D. E., Goto, Y., Huang, H., Hughes, V., Imai, K., Ishihara, M., Kanavets, V., Kurita, K., Kwiatkowski, K., Lewis, B., Lozowski, W., Makdisi, Y., Meyer, H. -O., Morozov, B. V., Nakamura, M., Przewoski, B., Rinckel, T., Roser, T., Rusek, A., Saito, N., Smith, B., Svirida, D., Syphers, M., Taketani, A., Thomas, T. L., Underwood, D., Wolfe, D., Yamamoto, K., and Zhu, L.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

The analyzing power for proton-carbon elastic scattering in the coulomb-nuclear interference region of momentum transfer, $9.0\times10^{-3}<-t<4.1\times10^{-2}$ (GeV/$c)^{2}$, was measured with a 21.7 GeV/$c$ polarized proton beam at the Alternating Gradient Synchrotron of Brookhaven National Laboratory. The ratio of hadronic spin-flip to non-flip amplitude, $r_5$, was obtained from the analyzing power to be $\text{Re} r_5=0.088\pm 0.058$ and $\text{Im} r_5=-0.161\pm 0.226$., Comment: 4 pages, 4 figures and 1 table. Accepted by Physical Review Letters

Published
2002
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7. Measurement of Spin Transfer Observables in Antiproton-Proton -> Antilambda-Lambda at 1.637 GeV/c

Author

Bassalleck, B., Berdoz, A., Bradtke, C., Bröders, R., Bunker, B., Dennert, H., Dutz, H., Eilerts, S., Eyrich, W., Fields, D., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Harmsen, J., Hauffe, J., Heinsius, F. H., Hertzog, D., Johansson, T., Jones, T., Khaustov, P., Kilian, K., Kingsberry, P., Kriegler, E., Lowe, J., Meier, A., Metzger, A., Meyer, C. A., Meyer, W., Moosburger, M., Oelert, W., Paschke, K. D., Plückthun, M., Pomp, S., Quinn, B., Radtke, E., Reicherz, G., Röhrich, K., Sachs, K., Schmitt, H., Schoch, B., Sefzick, T., Stinzing, F., Stotzer, R., Tayloe, R., and Wirth, St.

Subjects
Nuclear Experiment
Abstract

Spin transfer observables for the strangeness-production reaction Antiproton-Proton -> Antilambda-Lambda have been measured by the PS185 collaboration using a transversely-polarized frozen-spin target with an antiproton beam momentum of 1.637 GeV/c at the Low Energy Antiproton Ring at CERN. This measurement investigates observables for which current models of the reaction near threshold make significantly differing predictions. Those models are in good agreement with existing measurements performed with unpolarized particles in the initial state. Theoretical attention has focused on the fact that these models produce conflicting predictions for the spin-transfer observables D_{nn} and K_{nn}, which are measurable only with polarized target or beam. Results presented here for D_{nn} and K_{nn} are found to be in disagreement with predictions from existing models. These results also underscore the importance of singlet-state production at backward angles, while current models predict complete or near-complete triplet-state dominance., Comment: 5 pages, 3 figures

Published
2002
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8. Experimental Study of the Radiative Decays K+ -> mu+ nu e+e- and K+ -> e+ nu e+e-

Author

Poblaguev, A. A., Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D. R., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Herold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., Lichard, P., Lowe, J., Lozano, J., Ma, H., Majid, W., Pislak, S., Rehak, P., Sher, A., Thompson, J. A., Truoel, P., and Zeller, M. E.

Subjects
High Energy Physics - Experiment
Abstract

Experiment 865 at the Brookhaven AGS obtained 410 K+ -> e+ nu e+e- and 2679 K+ -> mu+ nu e+e- events including 10% and 19% background. The branching ratios were measured to be (2.48+-0.14(stat.)+-0.14(syst.))x10^-8 (m_ee>150 MeV) and (7.06+-0.16+-0.26)x10^-8 (m_ee>145 MeV), respectively. Results for the decay form factors are presented., Comment: 4 pages, 3 figures, RevTeX4

Published
2002
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9. A new measurement of K+(e4) decay and the s-wave pi-pi-scattering length a00

Author

Pislak, S., Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D. R., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Herold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., Lichard, P., Lowe, J., Lozano, J., Ma, H., Majid, W., Poblaguev, A. A., Rehak, P., Sher, A., Thompson, J. A., Truol, P., Zeller, M. E., and Collaboration, BNL-E865

Subjects
High Energy Physics - Experiment
Abstract

A sample of 400000 events from the decay K+->pi+pi-e+nu(e)(K(e4)) has been collected in experiment E865 at the Brookhaven AGS. The analysis of these data yields new measurements of the K(e4) branching ratio (4.11+-0.01+-0.11)*10**(-5)), the s-wave pi-pi scattering length a00=0.228+-0.012+-0.003, and the form factors F, G, and H of the hadronic current and their dependence on the invariant pi-pi mass.

Published
2001
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10. Search for Lepton Flavor Violation in $K^+$ Decays

Author

Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Fischer, H., Herold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., Lichard, P., Lowe, J., Lozano, J., Ma, H., Majid, W., Menzel, W., Pislak, S., Poblaguev, A. A., Rehak, P., Sher, A., Thompson, J. A., Truoel, P., and Zeller, M. E.

Subjects
High Energy Physics - Experiment
Abstract

A search for lepton flavor violating decays, \kmmp, \keep, \kpem, \kmep and \pizem, was performed using the data collected in E865 at the Brookhaven Alternating Gradient Synchrotron. No signal was found in any of the decay modes. At the 90% confidence level, the branching ratios are less than $3.0\times10^{-9}$, $6.4\times10^{-10}$, $5.2\times10^{-10}$, $5.0\times10^{-10}$ and $3.4\times10^{-9}$ respectively., Comment: one latex file (prllfv.tex), 4 pages, 6 Figs in eps

Published
2000
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11. An Improved Limit on the Rate Of Decay K+ -> pi+ mu+ e-

Author

Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D. R., Brown, D. N., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Felder, C., Fischer, H., Gach, M., Herold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., Leipuner, L., Lichard, P., Lowe, J., Lozano, J., Ma, H., Majid, W., Menzel, W., Pislak, S., Poblaguev, A. A., Postoev, V. E., Proskurjakov, A. L., Rehak, P., Robmann, P., Sher, A., Thompson, J. A., Truoel, P., Weyer, H., and Zeller, M. E.

Subjects
High Energy Physics - Experiment
Abstract

The experiment E865 at BNL places an upper limit on the branching ratio for the decay K+ -> pi+ mu+ e- of 3.9x10^-11 (90% C.L.). Along with with other results this yields a combined upper limit on this branching ratio of 2.8x10^-11. A new upper limit on the branching ratio for pi0 -> mu+ e- of 3.8x10^-10 (90% C.L.) is also established. The experiment and analysis are described., Comment: 5 pages, 4 figures, Submitted to Phys. Rev. Lett

Published
2000
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12. A New Measurement of the Rare Decay $K^+\to \pi^+ \mu^+ \mu^-$

Author

Ma, H., Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Fischer, H., Herold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., Lichard, P., Lowe, J., Lozano, J., Majid, W., Menzel, W., Pislak, S., Poblaguev, A. A., Rehak, P., Sher, A., Thompson, J. A., Truoel, P., and Zeller, M. E.

Subjects
High Energy Physics - Experiment
Abstract

More than 400 $K^{+}\to\pi^{+}\mu^+\mu^-$ events were observed in a rare $K^+$ decay experiment at the AGS. Normalized to the $K^{+}\to\pi^{+}\pi^+\pi^-$ decay, the branching ratio is determined to be $(9.22 \pm 0.60 (stat) \pm 0.49 (syst))\times 10^{-8}$. This branching ratio and the $\mu\mu$ mass spectrum is in very good agreement with the measurement of the $K^{+}\to\pi^{+}e^+e^-$ decay, but deviates significantly from the previous measurement., Comment: 4 pages, 6 figures in 7 eps files. Paper to be submitted to Phys Rev Lett

Published
1999
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14. Depolarization and spin transfer in [formula omitted] with a polarized target

Author

Bassalleck, B, Berdoz, A, Bradtke, C, Bröders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eyrich, W, Fields, D, Fischer, H, Franklin, G, Franz, J, Gehring, R, Geyer, R, Goertz, S, Hamann, N, Harmsen, J, Hauffe, J, Heinsius, F, Hertzog, D, Johansson, T, Jones, T, Khaustov, P, Kilian, K, Kingsberry, P, Kriegler, E, Lowe, J, Meier, A, Metzger, A, Meyer, C, Meyer, W, Moosburger, M, Oelert, W, Paschke, K, Plückthun, M, Pomp, S, Quinn, B, Reicherz, G, Röhrich, K, Sachs, K, Schmitt, H, Schoch, B, Sefzick, T, Stinzing, F, Stotzer, R, Tayloe, R, and Wirth, St

Published
2004
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15. Results from PS185

Author

Johansson, T., Barnes, P.D., Bassalleck, B., Bradke, C., Bröders, R., Bunker, B., Dennert, H., Dutz, H., Eilerts, S., Eisenstein, R.E., Eyrich, W., Fields, D., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Harmsen, J., Harris, P., Hauffe, J., Hertzog, D., Jones, T., Kilian, K., Kingsberry, P., Kriegler, E., Köningsmann, K., Lowe, J., Kraft, R.A., Meier, A., Meyer, C.A., Meyer, W., Oelert, W., Paschke, K., Plücktum, M., Pomp, S., Quinn, B., Radtke, E., Reicherz, G., Ruh, M., Röhrich, K., Rössle, E., Sachs, K., Schmitt, H., Schumacher, R., Sefzick, T., Stinzing, F., Stotzer, R., Tayloe, R., Todenhagen, R., and Wirth, S.

Published
1999
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16. Experimental determination of the complete spin structure for anti-proton + proton -> anti-\Lambda + \Lambda at anti-proton beam momentum of 1.637 GeV/c

Author

Paschke, K.D., Quinn, B., Berdoz, A., Franklin, G.B., Khaustov, P., Meyer, C.A., Bradtke, C., Gehring, R., Goertz, S., Harmsen, J., Meier, A., Meyer, W., Radtke, E., Reicherz, G., Dutz, H., Pluckthun, M., Schoch, B., Dennert, H., Eyrich, W., Hauffe, J., Metzger, A., Moosburger, M., Stinzing, F., Wirth, St., Fischer, H., Franz, J., Heinsius, F.H., Kriegler, E., Schmitt, H., Bunker, B., Hertzog, D., Jones, T., Tayloe, R., Broders, R., Geyer, R., Kilian, K., Oelert, W., Rohrich, K., Sachs, K., Sefzick, T., Bassalleck, B., Eilerts, S., Fields, D.E., Kingsberry, P., Lowe, J., Stotzer, R., Johansson, T., and Pomp, S.

Subjects
Nuclear Experiment, Nuclear Physics
Abstract

The reaction anti-proton + proton -> anti-\Lambda + \Lambda -> anti-proton + \pi^+ + proton + \pi^- has been measured with high statistics at anti-proton beam momentum of 1.637 GeV/c. The use of a transversely-polarized frozen-spin target combined with the self-analyzing property of \Lambda/anti-\Lambda decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering matrix can be written in terms of eleven real parameters for each bin of scattering angle, each of these parameters is determined with reasonable precision. From these results all conceivable spin-correlations are determined with inherent self-consistency. Good agreement is found with the few previously existing measurements of spin observables in anti-proton + proton -> anti-\Lambda + \Lambda near this energy. Existing theoretical models do not give good predictions for those spin-observables that had not been previously measured. The reaction anti-proton + proton -> anti-\Lambda + \Lambda -> anti-proton + \pi^+ + proton + \pi^- has been measured with high statistics at anti-proton beam momentum of 1.637 GeV/c. The use of a transversely-polarized frozen-spin target combined with the self-analyzing property of \Lambda/anti-\Lambda decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering matrix can be written in terms of eleven real parameters for each bin of scattering angle, each of these parameters is determined with reasonable precision. From these results all conceivable spin-correlations are determined with inherent self-consistency. Good agreement is found with the few previously existing measurements of spin observables in anti-proton + proton -> anti-\Lambda + \Lambda near this energy. Existing theoretical models do not give good predictions for those spin-observables that had not been previously measured.

Published
2006

17. Experimental determination of the complete spin structure for anti-proton + proton -> anti-��+ ��at anti-proton beam momentum of 1.637 GeV/c

Author

The PS185 Collaboration, Paschke, K . D., Quinn, B., Berdoz, A., Franklin, G. B., Khaustov, P., Meyer, C. A., Bradtke, C., Gehring, R., Goertz, S., Harmsen, J., Meier, A., Meyer, W., Radtke, E., Reicherz, G., Dutz, H., Pluckthun, M., Schoch, B., Dennert, H., Eyrich, W., Hauffe, J., Metzger, A., Moosburger, M., Stinzing, F., Wirth, St., Fischer, H., Franz, J., Heinsius, F. H., Kriegler, E., Schmitt, H., Bunker, B., Hertzog, D., Jones, T., Tayloe, R., Broders, R., Geyer, R., Kilian, K., Oelert, W., Rohrich, K., Sachs, K., Sefzick, T., Bassalleck, B., Eilerts, S., Fields, D. E., Kingsberry, P., Lowe, J., Stotzer, R., Johansson, T., and Pomp, S.

Subjects
FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

The reaction anti-proton + proton -> anti-��+ ��-> anti-proton + ��^+ + proton + ��^- has been measured with high statistics at anti-proton beam momentum of 1.637 GeV/c. The use of a transversely-polarized frozen-spin target combined with the self-analyzing property of ��/anti-��decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering matrix can be written in terms of eleven real parameters for each bin of scattering angle, each of these parameters is determined with reasonable precision. From these results all conceivable spin-correlations are determined with inherent self-consistency. Good agreement is found with the few previously existing measurements of spin observables in anti-proton + proton -> anti-��+ ��near this energy. Existing theoretical models do not give good predictions for those spin-observables that had not been previously measured., To be published in Phys. Rev. C. Tables of results (i.e. Ref. 24) are available at http://www-meg.phys.cmu.edu/~bquinn/ps185_pub/results.tab 24 pages, 16 figures

Published
2006
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18. Measurement of spin-transfer observables in p(bar)p->Lambda(bar) Lambda at 1.637 GeV/c

Author

Bassalleck, B., Berdoz, A., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Harmsen, J., Hauffe, J., Heinsius, F. H., Hertzog, D., Bradtke, R. O., Johansson, T., Jones, T., Khaustov, P., Kilian, K., Kingsberry, P., Kriegler, E., Lowe, A. V., Meier, A., Metzger, A., Meyer, C. A., Bröders, R., Meyer, W., Moosburger, M., Oelert, W., Paschke, K. D., Plückthun, M., Pomp, S., Quinn, B., Radtke, E., Reicherz, G., Röhrich, K., Bunker, B., Sachs, K., Schmitt, H., Schoch, B., Sefzick, N. Y., Stinzing, F., Stotzer, R., Tayloe, R., Wirth, St., Dennert, H., Dutz, H., Eilerts, S., Eyrich, W., and Fields, D.

Subjects
ddc:550
Published
2002

19. Measurement of spin-transfer observables in pp to $\Lambda \Lambda$ at 1.637 GeV/c

Author

Bassalleck, B., Berdoz, A., Bradtke, C., Broders, R., Bunker, B., Dennert, H., Dutz, H., Eilerts, S., Eyrich, W., Fields, D., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Harmsen, J., Hauffe, J., Heinsius, F.H., Hertzog, D., Johansson, T., Jones, T., Khaustov, P., Kilian, K., Kingsberry, P., Kriegler, E., Lowe, J., Meier, A., Metzger, A., Meyer, C.A., Meyer, W., Moosburger, M., Oelert, W., Paschke, K.D., Pluckthun, M., Pomp, S., Quinn, B., Radtke, E., Reicherz, G., Rohrich, K., Sachs, K., Schmitt, H., Schoch, B., Sefzick, T., Stinzing, F., Stotzer, R., Tayloe, R., and Wirth, St.

Subjects
Nuclear Experiment, Particle Physics - Experiment
Abstract

Spin-transfer observables for pp to Lambda Lambda have been measured using a transversely polarized frozen-spin target and a beam momentum of 1.637 GeV/c. Current models of the reaction near threshold are in good agreement with existing measurements performed with unpolarized particles in the initial state but produce conflicting predictions for the spin-transfer observables D/sub nn/ and K/sub nn/ (the normal-to-normal depolarization and polarization transfer), which are measurable only with polarized target or beam. Measurements of D/sub nn/ and K/sub nn/ presented here are found to be in disagreement with predictions from these models. (21 refs). Spin transfer observables for the strangeness-production reaction Antiproton-Proton -> Antilambda-Lambda have been measured by the PS185 collaboration using a transversely-polarized frozen-spin target with an antiproton beam momentum of 1.637 GeV/c at the Low Energy Antiproton Ring at CERN. This measurement investigates observables for which current models of the reaction near threshold make significantly differing predictions. Those models are in good agreement with existing measurements performed with unpolarized particles in the initial state. Theoretical attention has focused on the fact that these models produce conflicting predictions for the spin-transfer observables D_{nn} and K_{nn}, which are measurable only with polarized target or beam. Results presented here for D_{nn} and K_{nn} are found to be in disagreement with predictions from existing models. These results also underscore the importance of singlet-state production at backward angles, while current models predict complete or near-complete triplet-state dominance.

Published
2002

20. A comprehensive characterization of Hamamatsu 16- and 64-anode PMTs

Author

Lang, K. Day, J. Eilerts, S. Fuqua, S. Kordosky, M. Vahle, P.L. Dervan, P. Saakyan, R. Thomas, J. Barker, M. Miyagawa, P.S. De Santo, A. Weber, A. Tzanakos, G. Kim, H. Michael, D. Ignatenko, M. Makeev, V. Para, A. Lee, R. Bower, C. Mufson, S. Border, P. Cushman, P. Ruddick, K. Schwienhorst, R. Adamson, P. Harris, P.G. Webb, R.C. Oliver, W. Schneps, J.

Abstract

We are reporting preliminary results of studies of R59000-00-M16 and M64 tubes, manufactured by Hamamatsu Photonics, to be employed by the MINOS neutrino experiment. Our tests focused on anode response uniformity, gain, cross-talk, and linearity for light illuminating PMTs through a 1.2 mm diameter fiber. © 2001 Elsevier Science B.V.

Published
2001

21. A New Measurement of the Rare Decay $K^+\to ��^+ ��^+ ��^-$

Author

Ma, H., Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Fischer, H., Herold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., Lichard, P., Lowe, J., Lozano, J., Majid, W., Menzel, W., Pislak, S., Poblaguev, A. A., Rehak, P., Sher, A., Thompson, J. A., Truoel, P., and Zeller, M. E.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences
Abstract

More than 400 $K^{+}\to��^{+}��^+��^-$ events were observed in a rare $K^+$ decay experiment at the AGS. Normalized to the $K^{+}\to��^{+}��^+��^-$ decay, the branching ratio is determined to be $(9.22 \pm 0.60 (stat) \pm 0.49 (syst))\times 10^{-8}$. This branching ratio and the $����$ mass spectrum is in very good agreement with the measurement of the $K^{+}\to��^{+}e^+e^-$ decay, but deviates significantly from the previous measurement., 4 pages, 6 figures in 7 eps files. Paper to be submitted to Phys Rev Lett

Published
1999
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22. Experimental determination of the complete spin structure for (p)over-barp ->(Lambda)over-bar Lambda at p((p)over-bar)=1.637 GeV/c

Author

Paschke, K. D., Quinn, B., Berdoz, A., Franklin, G. B., Khaustov, P., Meyer, C. A., Bradtke, C., Gehring, R., Goertz, S., Harmsen, J., Meier, A., Meyer, W., Radtke, E., Reicherz, G., Dutz, H., Plueckthun, M., Schoch, B., Dennert, H., Eyrich, W., Hauffe, J., Metzger, A., Moosburger, M., Stinzing, F., Wirth, St., Fischer, H., Franz, J., Heinsius, F. H., Kriegler, E., Schmitt, H., Bunker, B., Hertzog, D., Jones, T., Tayloe, R., Broeders, R., Geyer, R., Kilian, K., Oelert, W., Roehrich, K., Sachs, K., Sefzick, T., Bassalleck, B., Eilerts, S., Fields, D. E., Kingsberry, P., Lowe, J., Stotzer, R., Johansson, Tord, Pomp, Stephan, Paschke, K. D., Quinn, B., Berdoz, A., Franklin, G. B., Khaustov, P., Meyer, C. A., Bradtke, C., Gehring, R., Goertz, S., Harmsen, J., Meier, A., Meyer, W., Radtke, E., Reicherz, G., Dutz, H., Plueckthun, M., Schoch, B., Dennert, H., Eyrich, W., Hauffe, J., Metzger, A., Moosburger, M., Stinzing, F., Wirth, St., Fischer, H., Franz, J., Heinsius, F. H., Kriegler, E., Schmitt, H., Bunker, B., Hertzog, D., Jones, T., Tayloe, R., Broeders, R., Geyer, R., Kilian, K., Oelert, W., Roehrich, K., Sachs, K., Sefzick, T., Bassalleck, B., Eilerts, S., Fields, D. E., Kingsberry, P., Lowe, J., Stotzer, R., Johansson, Tord, and Pomp, Stephan

Abstract

The reaction (p) over barp -> (Lambda) over bar Lambda -> (p) over bar pi(+)p pi(-) has been measured with high statistics at a beam momentum of p((p) over bar)=1.637GeV/c. The use of a transversely polarized frozen-spin target combined with the self-analyzing property of Lambda/(Lambda) over bar decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering matrix can be written in terms of 11 real parameters for each bin of scattering angle; each of these parameters is determined with reasonable precision. From these results, all conceivable spin correlations are determined with inherent self-consistency. Good agreement is found with the few previously existing measurements of spin observables in (p) over barp ->(Lambda) over bar Lambda near this energy. Existing theoretical models do not give good predictions for those spin observables that had not been previously measured.

Published
2006
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23. Depolarization and spin transfer in anti-p p -> anti-Lambda Lambda with a polarized target

Author

Bassalleck, B, Berdoz, A, Bradtke, C, Bröders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eyrich, W, Fields, D, Fischer, H, Franklin, G, Franz, J, Gehring, R, Geyer, R, Goertz, S, Hamann, N, Harmsen, J, Hauffe, J, Heinsius, F, Hertzog, D, Johansson, T, Jones, T, Khaustov, P, Meyer, C, Meyer, W, Moosburger, M, Oelert, W, Paschke, K, Pluckthun, M, Kilian, K, Kingsberry, P, Kriegler, E, Lowe, J, Meier, A, Metzger, A, Pomp, S, Quinn, B, Reicherz, G, Röhrich, K, Sachs, K, Schmitt, H, Schoch, B, Sefzick, T, Stinzing, F, Stotzer, R, Tayloe, R, Wirth, S, Bassalleck, B, Berdoz, A, Bradtke, C, Bröders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eyrich, W, Fields, D, Fischer, H, Franklin, G, Franz, J, Gehring, R, Geyer, R, Goertz, S, Hamann, N, Harmsen, J, Hauffe, J, Heinsius, F, Hertzog, D, Johansson, T, Jones, T, Khaustov, P, Meyer, C, Meyer, W, Moosburger, M, Oelert, W, Paschke, K, Pluckthun, M, Kilian, K, Kingsberry, P, Kriegler, E, Lowe, J, Meier, A, Metzger, A, Pomp, S, Quinn, B, Reicherz, G, Röhrich, K, Sachs, K, Schmitt, H, Schoch, B, Sefzick, T, Stinzing, F, Stotzer, R, Tayloe, R, and Wirth, S

Published
2004

24. Depolarization and spin transfer in anti_p+p->anti_Lambda+Lambda with a polarized target

Author

Bassalleck, B., Berdoz, A., Bradtke, C., Bröders, R., Bunker, B., Dennert, H., Dutz, H., Eilerts, S., Eyrich, W., Fields, D., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Haman, N., Harmsen, J., Hauffe, J., Heinsius, F., Hertzog, D., Johansson, Tord, Khaustov, P., Kilian, K., Kingsberry, P., Kriegler, E., Lowe, J., Meier, A., Metzger, A., Meyer, C., Moosburger, M., Oelert, W., Paschke, K., Pluecktun, M., Pomp, S., Quinn, B., Röhrich, K., Sachs, K., Schmitt, H., Schoch, B., Sefzik, T., Stinzing, F., Stotzer, R., Tayloe, R., Wirth, St., Bassalleck, B., Berdoz, A., Bradtke, C., Bröders, R., Bunker, B., Dennert, H., Dutz, H., Eilerts, S., Eyrich, W., Fields, D., Fischer, H., Franklin, G., Franz, J., Gehring, R., Geyer, R., Goertz, S., Haman, N., Harmsen, J., Hauffe, J., Heinsius, F., Hertzog, D., Johansson, Tord, Khaustov, P., Kilian, K., Kingsberry, P., Kriegler, E., Lowe, J., Meier, A., Metzger, A., Meyer, C., Moosburger, M., Oelert, W., Paschke, K., Pluecktun, M., Pomp, S., Quinn, B., Röhrich, K., Sachs, K., Schmitt, H., Schoch, B., Sefzik, T., Stinzing, F., Stotzer, R., Tayloe, R., and Wirth, St.

Published
2004
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25. Erratum: New Measurement ofKe4+Decay and thes-WaveππScattering Lengtha00[Phys. Rev. Lett.87, 221801 (2001)]

Author

Pislak, S., primary, Appel, R., additional, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Fischer, H., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Poblaguev, A. A., additional, Rehak, P., additional, Sher, A., additional, Thompson, J. A., additional, Truöl, P., additional, and Zeller, M. E., additional

Published
2010
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26. Erratum: High statistics measurement ofKe4decay properties [Phys. Rev. D67, 072004 (2003)]

Author

Pislak, S., primary, Appel, R., additional, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Fischer, H., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Poblaguev, A. A., additional, Rehak, P., additional, Sher, A., additional, Sher, Aleksey, additional, Thompson, J. A., additional, Truöl, P., additional, and Zeller, M. E., additional

Published
2010
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27. Measurement of Spin Transfer Observables in anti-p p -> anti-Lambda Lambda at 1.637 GeV/c

Author

Bassalleck, B, Berdoz, A, Bradtke, C, Bröders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eyrich, W, Fields, D, Fischer, H, Franklin, F, Franz, J, Gehring, R, Geyer, R, Goertz, S, Harmsen, J, Hauffe, J, Heinsius, F.H, Hertzog, D, Johansson, T, Jones, T, Khaustov, P, Kilian, K, Kingsberry, P, Kriegler, E, Lowe, J, Meier, A, Metzger, A, Meyer, C.A, Meyer, W, Moosburger, M, Oelert, W, Paschke, K.D, Pluckthun, M, Pomp, S, Qunn, B, Radtke, E, Reicherz, G, Röhrich, K, Sachs, K, Schmitt, H, Schoch, B, Sefzick, T, Stinzing, F, Stotzer, R, Tayloe, R, Wirth, S, Bassalleck, B, Berdoz, A, Bradtke, C, Bröders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eyrich, W, Fields, D, Fischer, H, Franklin, F, Franz, J, Gehring, R, Geyer, R, Goertz, S, Harmsen, J, Hauffe, J, Heinsius, F.H, Hertzog, D, Johansson, T, Jones, T, Khaustov, P, Kilian, K, Kingsberry, P, Kriegler, E, Lowe, J, Meier, A, Metzger, A, Meyer, C.A, Meyer, W, Moosburger, M, Oelert, W, Paschke, K.D, Pluckthun, M, Pomp, S, Qunn, B, Radtke, E, Reicherz, G, Röhrich, K, Sachs, K, Schmitt, H, Schoch, B, Sefzick, T, Stinzing, F, Stotzer, R, Tayloe, R, and Wirth, S

Published
2002

28. Results from PS185.

Author

Johansson, Tord, Barnes, PD, Bassalleck, B, Bradke, C, Broders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eisenstein, RE, Eyrich, W, Fields, D, Fischer, H, Franklin, G, Franz, J, Gehring, R, Geyer, R, Goertz, S, Harmsen, J, Harris, P, Hauffe, J, Hertzog, D, Johansson, T, J, Johansson, Tord, Barnes, PD, Bassalleck, B, Bradke, C, Broders, R, Bunker, B, Dennert, H, Dutz, H, Eilerts, S, Eisenstein, RE, Eyrich, W, Fields, D, Fischer, H, Franklin, G, Franz, J, Gehring, R, Geyer, R, Goertz, S, Harmsen, J, Harris, P, Hauffe, J, Hertzog, D, Johansson, T, and J

Abstract

The PS185 experiment at LEAR/CERN has studied strangeness production in antiproton-proton collisions. Exclusive final states of antihyperon-hyperon pairs have been measured in order to investigate strange-quark production dynamics. A comprehensive data se, Addresses: Johansson T, Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Univ New Mexico, Albuquerque, NM 87131 USA. Univ Bochum, Bochum, Germany. Univ Bonn, D-5300 Bonn, Germany. Univ Erlangen Nurnberg, D-85

Published
1999

29. Experimental determination of the complete spin structure forp¯p→Λ¯Λatpp¯=1.637GeV/c

Author

Paschke, K. D., primary, Quinn, B., additional, Berdoz, A., additional, Franklin, G. B., additional, Khaustov, P., additional, Meyer, C. A., additional, Bradtke, C., additional, Gehring, R., additional, Goertz, S., additional, Harmsen, J., additional, Meier, A., additional, Meyer, W., additional, Radtke, E., additional, Reicherz, G., additional, Dutz, H., additional, Plückthun, M., additional, Schoch, B., additional, Dennert, H., additional, Eyrich, W., additional, Hauffe, J., additional, Metzger, A., additional, Moosburger, M., additional, Stinzing, F., additional, Wirth, St., additional, Fischer, H., additional, Franz, J., additional, Heinsius, F. H., additional, Kriegler, E., additional, Schmitt, H., additional, Bunker, B., additional, Hertzog, D., additional, Jones, T., additional, Tayloe, R., additional, Bröders, R., additional, Geyer, R., additional, Kilian, K., additional, Oelert, W., additional, Röhrich, K., additional, Sachs, K., additional, Sefzick, T., additional, Bassalleck, B., additional, Eilerts, S., additional, Fields, D. E., additional, Kingsberry, P., additional, Lowe, J., additional, Stotzer, R., additional, Johansson, T., additional, and Pomp, S., additional

Published
2006
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30. First observation of the decayK+→e+νeμ+μ−

Author

Ma, H., primary, Appel, R., additional, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Majid, W., additional, Pislak, S., additional, Poblaguev, A. A., additional, Rehak, P., additional, Sher, A., additional, Thompson, J. A., additional, Truöl, P., additional, and Zeller, M. E., additional

Published
2006
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31. Improved upper limit on the decayK+→π+μ+e−

Author

Sher, Aleksey, primary, Appel, R., additional, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Fischer, H., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Pislak, S., additional, Poblaguev, A. A., additional, Rehak, P., additional, Sher, A., additional, Thompson, J. A., additional, Truöl, P., additional, and Zeller, M. E., additional

Published
2005
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32. Depolarization and spin transfer in with a polarized target

Author

Bassalleck, B, primary, Berdoz, A, additional, Bradtke, C, additional, Bröders, R, additional, Bunker, B, additional, Dennert, H, additional, Dutz, H, additional, Eilerts, S, additional, Eyrich, W, additional, Fields, D, additional, Fischer, H, additional, Franklin, G, additional, Franz, J, additional, Gehring, R, additional, Geyer, R, additional, Goertz, S, additional, Hamann, N, additional, Harmsen, J, additional, Hauffe, J, additional, Heinsius, F, additional, Hertzog, D, additional, Johansson, T, additional, Jones, T, additional, Khaustov, P, additional, Kilian, K, additional, Kingsberry, P, additional, Kriegler, E, additional, Lowe, J, additional, Meier, A, additional, Metzger, A, additional, Meyer, C, additional, Meyer, W, additional, Moosburger, M, additional, Oelert, W, additional, Paschke, K, additional, Plückthun, M, additional, Pomp, S, additional, Quinn, B, additional, Reicherz, G, additional, Röhrich, K, additional, Sachs, K, additional, Schmitt, H, additional, Schoch, B, additional, Sefzick, T, additional, Stinzing, F, additional, Stotzer, R, additional, Tayloe, R, additional, and Wirth, St, additional

Published
2004
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33. High Statistics Measurement of theK+→π0e+ν(Ke3+) Branching Ratio

Author

Sher, A., primary, Appel, R., additional, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Fischer, H., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Pislak, S., additional, Poblaguev, A. A., additional, Rehak, P., additional, Sher, Aleksey, additional, Thompson, J. A., additional, Truöl, P., additional, and Zeller, M. E., additional

Published
2003
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34. High statistics measurement ofKe4decay properties

Author

Pislak, S., primary, Appel, R., additional, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Fischer, H., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Poblaguev, A. A., additional, Rehak, P., additional, Sher, A., additional, Sher, Aleksey, additional, Thompson, J. A., additional, Truöl, P., additional, and Zeller, M.E., additional

Published
2003
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35. Measurement of Spin-Transfer Observables inp¯p→Λ¯Λat1.637GeV/c

Author

Bassalleck, B., primary, Berdoz, A., additional, Bradtke, C., additional, Bröders, R., additional, Bunker, B., additional, Dennert, H., additional, Dutz, H., additional, Eilerts, S., additional, Eyrich, W., additional, Fields, D., additional, Fischer, H., additional, Franklin, G., additional, Franz, J., additional, Gehring, R., additional, Geyer, R., additional, Goertz, S., additional, Harmsen, J., additional, Hauffe, J., additional, Heinsius, F. H., additional, Hertzog, D., additional, Johansson, T., additional, Jones, T., additional, Khaustov, P., additional, Kilian, K., additional, Kingsberry, P., additional, Kriegler, E., additional, Lowe, J., additional, Meier, A., additional, Metzger, A., additional, Meyer, C. A., additional, Meyer, W., additional, Moosburger, M., additional, Oelert, W., additional, Paschke, K. D., additional, Plückthun, M., additional, Pomp, S., additional, Quinn, B., additional, Radtke, E., additional, Reicherz, G., additional, Röhrich, K., additional, Sachs, K., additional, Schmitt, H., additional, Schoch, B., additional, Sefzick, T., additional, Stinzing, F., additional, Stotzer, R., additional, Tayloe, R., additional, and Wirth, St., additional

Published
2002
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36. Experimental Study of the Radiative DecaysK+→μ+νe+e−andK+→e+νe+e−

Author

Poblaguev, A. A., primary, Appel, R., additional, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Pislak, S., additional, Rehak, P., additional, Sher, A., additional, Thompson, J. A., additional, Truöl, P., additional, and Zeller, M. E., additional

Published
2002
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37. Measurement of Analyzing Power for Proton-Carbon Elastic Scattering in the Coulomb-Nuclear Interference Region with a22−GeV/cPolarized Proton Beam

Author

Tojo, J., primary, Alekseev, I., additional, Bai, M., additional, Bassalleck, B., additional, Bunce, G., additional, Deshpande, A., additional, Doskow, J., additional, Eilerts, S., additional, Fields, D. E., additional, Goto, Y., additional, Huang, H., additional, Hughes, V., additional, Imai, K., additional, Ishihara, M., additional, Kanavets, V., additional, Kurita, K., additional, Kwiatkowski, K., additional, Lewis, B., additional, Lozowski, W., additional, Makdisi, Y., additional, Meyer, H.-O., additional, Morozov, B. V., additional, Nakamura, M., additional, Przewoski, B., additional, Rinckel, T., additional, Roser, T., additional, Rusek, A., additional, Saito, N., additional, Smith, B., additional, Svirida, D., additional, Syphers, M., additional, Taketani, A., additional, Thomas, T. L., additional, Underwood, D., additional, Wolfe, D., additional, Yamamoto, K., additional, and Zhu, L., additional

Published
2002
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38. RHIC pC CNI POLARIMETER, CURRENT STATUS AND FUTURE PLANS

Author

ALEKSEEV, I. G., primary, BAI, M., additional, BASSALLECK, B., additional, BUNCE, G., additional, DESHPANDE, A., additional, DHAWAN, S., additional, DOSKOW, J., additional, EILERTS, S., additional, FIELDS, D. E., additional, GOTO, Y., additional, HUANG, H., additional, HUGHES, V., additional, IMAI, K., additional, ISHIHARA, M., additional, KANAVETS, V. P., additional, KURITA, K., additional, KWAITOWSKI, K., additional, LEWIS, B., additional, LOZOWSKI, B., additional, MACKAY, W., additional, MAKDISI, Y., additional, MEYER, H. O., additional, MOROZOV, B. V., additional, NAKAMURA, M., additional, PRZEWOSKI, B. V., additional, RINCKEL, T., additional, ROSER, T., additional, RUSEK, A., additional, SAITO, N., additional, SMITH, B., additional, SPINKA, H., additional, SVIRIDA, D. N., additional, SYPHERS, M., additional, TAKETANI, A., additional, THOMAS, T. L., additional, TOJO, J., additional, UNDERWOOD, D., additional, WOLFE, D., additional, YAMAMOTO, K., additional, and ZHU, L., additional

Published
2002
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39. New Measurement ofKe4+Decay and thes-Waveππ-Scattering Lengtha00

Author

Pislak, S., primary, Appel, R., additional, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Poblaguev, A. A., additional, Rehak, P., additional, Sher, A., additional, Thompson, J. A., additional, Truöl, P., additional, and Zeller, M. E., additional

Published
2001
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40. A comprehensive characterization of Hamamatsu 16- and 64-anode PMTs

Author

Lang, K., primary, Day, J., additional, Eilerts, S., additional, Fuqua, S., additional, Kordosky, M., additional, Vahle, P.L., additional, Dervan, P., additional, Saakyan, R., additional, Thomas, J., additional, Barker, M., additional, Miyagawa, P.S., additional, Santo, A.De, additional, Weber, A., additional, Tzanakos, G., additional, Kim, H., additional, Michael, D., additional, Ignatenko, M., additional, Makeev, V., additional, Para, A., additional, Lee, R., additional, Bower, C., additional, Mufson, S., additional, Border, P., additional, Cushman, P., additional, Ruddick, K., additional, Schwienhorst, R., additional, Adamson, P., additional, Harris, P.G., additional, Webb, R.C., additional, Oliver, W., additional, and Schneps, J., additional

Published
2001
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41. Measurement of the analyzing power for proton-carbon elastic scattering in the CNI region with a 22 GeV/c polarized proton beam.

Author

Tojo, J., Alekseev, I., Bai, M., Bassalleck, B., Bunce, G., Deshpande, A., Doskow, J., Eilerts, S., Fields, D. E., Goto, Y., Huang, H., Hughes, V., Imai, K., Ishihara, M., Kanavets, V., Kurita, K., Kwiatkowski, K., Lewis, B., Lozowski, B., and Makdisi, Y.

Subjects
PROTONS, ELASTIC scattering
Abstract

We have carried out the experiment BNL-AGS E950 to measure the analyzing power for proton-carbon elastic scattering in the Coulomb-Nuclear Interference (CNI) region with a 22 GcV/c polarized proton beam. Recoil carbons from 300 keV to a few MeV in the CNI region, were detected inside the AGS ring to identify proton-carbon elastic scattering. The preliminary results of the analyzing power measurement are presented. [ABSTRACT FROM AUTHOR]

Published
2001

42. Analyzing power in CNI-region at AGS (experiment E950).

Author

Alekseev, I. G., Bai, M., Bassalleck, B., Bunce, G., Deshpande, A., Doskow, J., Eilerts, S., Fields, D. E., Goto, Y., Imai, K., Ishihara, M., Kanavets, V. P., Kurita, K., Huang, H., Hughes, V., Kwaitowski, K., Lewis, B., Lozowski, B., Makdisi, Y., and Meyer, H.O.

Subjects
POLARIZED beams (Nuclear physics), PROTONS, COLLIDERS (Nuclear physics)
Abstract

Acceleration of polarized protons is one of the exciting features of the new Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. Measurements of beam polarization are required both for experiments and the accelerator tuning. Elastic scattering in the Coulomb nuclear interference (CNI) region of polarized proton beams on a carbon target demonstrates asymmetry which can be used to build a polarimeter. The methods proposed for a RHIC CNI polarimeter were tested with the AGS polarized beam in the E950 experiment. A 21.7 GeV/c polarized proton beam was scattered on an extremely thin carbon ribbon target located in the AGS ring. Two symmetrical arms consisting of silicon strip detectors (SSD) and a micro channel plate (MCP) were used to identify recoil carbon. Data obtained demonstrates a good identification of the reaction by the apparatus anda significant analyzing power. A RHIC polarimeter setup with 4 SSDs but without MCPs will be used to commission RHIC with polarized protons and for the first spin physics running in 2001. [ABSTRACT FROM AUTHOR]

Published
2000

43. Search for Lepton Flavor Violation inK+Decays into a Charged Pion and Two Leptons

Author

Appel, R., primary, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Fischer, H., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Menzel, W., additional, Pislak, S., additional, Poblaguev, A. A., additional, Rehak, P., additional, Sher, A., additional, Thompson, J. A., additional, Truöl, P., additional, and Zeller, M. E., additional

Published
2000
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44. Improved Limit on the Rate of the DecayK+→π+μ+e−

Author

Appel, R., primary, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Brown, D. N., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Felder, C., additional, Fischer, H., additional, Gach, M., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Leipuner, L., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Menzel, W., additional, Pislak, S., additional, Poblaguev, A. A., additional, Postoev, V. E., additional, Proskurjakov, A. L., additional, Rehak, P., additional, Robmann, P., additional, Sher, A., additional, Thompson, J. A., additional, Truöl, P., additional, Weyer, H., additional, and Zeller, M. E., additional

Published
2000
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45. New Measurement of the Rare DecayK+→π+μ+μ−

Author

Ma, H., primary, Appel, R., additional, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Fischer, H., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Majid, W., additional, Menzel, W., additional, Pislak, S., additional, Poblaguev, A. A., additional, Rehak, P., additional, Sher, A., additional, Thompson, J. A., additional, Truöl, P., additional, and Zeller, M. E., additional

Published
2000
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46. New Measurement of the Properties of the Rare DecayK+→π+e+e−

Author

Appel, R., primary, Atoyan, G. S., additional, Bassalleck, B., additional, Bergman, D. R., additional, Brown, D. N., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Felder, C., additional, Fischer, H., additional, Gach, M., additional, Herold, W., additional, Issakov, V. V., additional, Kaspar, H., additional, Kraus, D. E., additional, Lazarus, D. M., additional, Leipuner, L., additional, Lichard, P., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Menzel, W., additional, Pislak, S., additional, Poblaguev, A. A., additional, Postoev, V. E., additional, Proskurjakov, A. L., additional, Rehak, P., additional, Robmann, P., additional, Sher, A., additional, Thomas, T. L., additional, Thompson, J. A., additional, Truöl, P., additional, Weyer, H., additional, and Zeller, M. E., additional

Published
1999
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47. Recent results from BNL E865

Author

Sher, A., primary, Appel, R., additional, Atoyan, G. S., additional, Bassaleck, B., additional, Brown, D. N., additional, Bergman, D. R., additional, Cheung, N., additional, Dhawan, S., additional, Do, H., additional, Egger, J., additional, Eilerts, S., additional, Felder, C., additional, Fischer, H., additional, Gach, M., additional, Herold, W. D., additional, Isakov, V. V., additional, Kaspar, H., additional, Kraus, D., additional, Lazarus, D. M., additional, Leipuner, L., additional, Lowe, J., additional, Lozano, J., additional, Ma, H., additional, Majid, W., additional, Menzel, W., additional, Pislak, S., additional, Poblaguev, A. A., additional, Proskurjakov, A. L., additional, Rehak, P., additional, Robmann, P., additional, Stotzer, R., additional, Thompson, J. A., additional, Truöl, P., additional, Weyer, H., additional, and Zeller, M. E., additional

Published
1999
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48. A p-carbon CNI polarimeter for RHIC

Author

Huang, H., primary, Bai, M., additional, Bunce, G., additional, Makdisi, Y., additional, Roser, T., additional, Imai, K., additional, Nakamura, M., additional, Tojo, J., additional, Yamamoto, K., additional, Zhu, L., additional, Bassalleck, B., additional, Eilerts, S., additional, Fields, D.E., additional, Lewis, B., additional, Smith, B., additional, Thomas, T.L., additional, Wolfe, D., additional, Goto, Y., additional, Hayoshi, N., additional, Ishihara, M., additional, Kurita, K., additional, Okamura, M., additional, Saito, N., additional, Taketani, A., additional, Underwood, D., additional, Doskow, J., additional, Kwiatkowski, K., additional, Lozowski, B., additional, Meyer, H.O., additional, Przewoski, B.V., additional, Rinckel, T., additional, Nurushev, S.B., additional, Strikhanov, M.N., additional, Runtzo, M.F., additional, Alekseev, I.G., additional, Svirida, D.N., additional, Deshpande, A., additional, and Hughes, V., additional

Published
1999
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50. Study of K+ → π +e+e- and K+ → π+ μ+ μ- decays in E865 at the AGS.

Author

Ma, H., Appel, R., Atoyan, G. S., Bassalleck, B., Bergman, D., Brown, D. N., Cheung, N., Dhawan, S., Do, H., Egger, J., Eilerts, S., Felder, C., Fischer, H., Gach, M., Herold, W., Issakov, V. V., Kaspar, H., Kraus, D. E., Lazarus, D. M., and Leipuner, L.

Subjects
RADIOACTIVE decay, MONTE Carlo method, LEPTONS (Nuclear physics), PARTICLE physics, SPECTRUM analysis
Published
1999

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