Search

Your search keyword '"Dzemidzic M"' showing total 261 results
Start Over Author "Dzemidzic M"
261 results on '"Dzemidzic M"'

1. Formation of the $S=-1$ resonance X(2265) in the reaction $pp -> X + K^+$ at 2.50 and 2.85 GeV

Author

Kienle, P., Maggiora, M., Suzuki, K., Yamazaki, T., Alexeev, M., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Chiosso, M., Choi, Seonho, Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J. -Cl., Ferrero, A., Ferrero, L., Foryciarz, J., Froehlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kuehn, W., Maggiora, A., Panzieri, D., Pfaff, H. -W., Pontecorvo, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, G.

Subjects
Nuclear Experiment
Abstract

Analyzing DISTO data of $pp -> p Lambda K^+$ at $T_p = 2.50$ and 2.85 GeV to populate a previously reported X(2265) resonance with $M_X = 2267$ MeV/$c^2$ and $Gamma_X = 118$ MeV at 2.85 GeV, we found that the production of X(2265) at 2.50 GeV is much less than that at 2.85 GeV (less than 10%), though it is expected from a kinematical consideration to be produced as much as 33% of that at 2.85 GeV. The small population of X(2265) at 2.50 GeV is consistent with the very weak production of Lambda (1405) at the same incident energy toward its production threshold, thus indicating that Lambda (1405) plays an important role as a doorway state for the formation of X(2265)., Comment: 5 pages, 4 figures

Published
2011
Full Text
View/download PDF

2. Indication of a deeply bound compact K-pp state formed in the pp -> p Lambda K+ reaction at 2.85 GeV

Author

Yamazaki, T., Maggiora, M., Kienle, P., Suzuki, K., Amoroso, A., Alexeev, M., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Choi, Seonho, Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J. -Cl., Ferrero, L., Foryciarz, J., Froehlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kuhn, W., Maggiora, A., Panzieri, D., Pfaff, H. -W., Pontecorvo, G., Popov, A., Ritman, J., Salabura, P., Sosio, S., Tchalyshev, V., and Vigdor, S. E.

Subjects
Nuclear Experiment
Abstract

We have analyzed data of the DISTO experiment on the exclusive pp -> p Lambda K+ reaction at 2.85 GeV to search for a strongly bound compact K-pp (= X) state to be formed in the pp -> K+ + X reaction. The observed spectra of the K+ missing-mass and the p Lambda invariant-mass with high transverse momenta of p and K+ revealed a broad distinct peak with a mass M_X = 2265 +- 2 (stat) +- 5 (syst) MeV/c2 and a width Gamma_X = 118 +- 8 (stat) +- 10 (syst) MeV., Comment: 4 pages, 4 figures

Published
2010
Full Text
View/download PDF

3. DISTO data on Kpp

Author

Maggiora, M., Kienle, P., Suzuki, K., Yamazaki, T., Collaboration, DISTO, Alexeev, M., Amoroso, A., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Choi, S., Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J. Cl., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Panzieri, D., Sosio, S., Pfaff, H. W., Pontecorvo, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., and Vigdor, S. E.

Subjects
High Energy Physics - Experiment
Abstract

The data from the DISTO Collaboration on the exclusive pp -> p K+ Lambda production acquired at T_p = 2.85 GeV have been re-analysed in order to search for a deeply bound K- pp (= X) state, to be formed in the binary process pp -> K+ X. The preliminary spectra of the DeltaM_{K+} missing-mass and of the M_{p Lambda} invariant-mass show, for large transverse-momenta of protons and kaons, a distinct broad peak with a mass M_X = 2265 +- 2 MeV/c^2 and a width Gamma_X = 118 +- 8 MeV/c^2., Comment: 8 pages, 4 figures. Talk presented at the "10th International Conference on Hypernuclear and Strange Particle Physics" (HYP-X), Tokai, Ibaraki, Japan, September 14th-18th, 2009. To appear in the proceedings

Published
2009
Full Text
View/download PDF

4. Rho^0 meson production in the pp ->pppi+pi- reaction at 3.67 GeV/c

Author

Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Choi, Seonho, Colanton, M. L., Dressler, R., Dzemidzic, M., Faivre, J. -Cl., Ferrero, A., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H. -W., Piragino, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, G.

Subjects
High Energy Physics - Experiment
Abstract

Total and differential cross sections for the exclusive reaction pp->pp rho^0 observed via the pi+pi- decay channel have been measured at beam momentum=3.67 GeV/c. The observed total meson production cross section is determined to be 23.4 +- 0.8 +-8 microb and is significantly lower than typical cross sections used in model calculations for heavy ion collisions. The differential cross sections measured indicate a strong anisotropy cos^2(theta^{CM}) in the rho^0 meson production., Comment: 3 figures, 11 pages

Published
2002
Full Text
View/download PDF

5. $\phi$ and $\omega$ Meson Production in pp Reactions at $p_{lab}$=3.67 GeV/c

Author

DISTO Collaboration, Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Choi, Seonho, Debowski, M., Dressler, R., Dzemidzic, M., Faivre, J. -Cl., Falomkin, I. V., Fava, L., Ferrero, L., Foryciarz, J., Froehlich, I., Frolov, V., Garfagnini, R., Grasso, A., Grosse, E., Heinz, S., Ivanov, V. V., Jacobs, W. W., Kuehn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H. -W., Piragino, G., Pontecorvo, G. B., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, G.

Subjects
Nuclear Experiment
Abstract

The exclusive production cross sections for $\omega$ and $\phi$ mesons have been measured in proton-proton reactions at $p_{lab}=3.67$ GeV/c. The observed $\phi/\omega$ cross section ratio is $(3.8\pm0.2^{+1.2}_{-0.9})\times 10^{-3}$. After phase space corrections, this ratio is enhanced by about an order of magnitude relative to naive predictions based upon the Okubo-Zweig-Iizuka (OZI) rule, in comparison to an enhancement by a factor $\sim 3$ previously observed at higher beam momenta. The modest increase of this enhancement near the production threshold is compared to the much larger increase of the $\phi/\omega$ ratio observed in specific channels of $\bar pp$ annihilation experiments. Furthermore, differential cross section results are also presented which indicate that although the $\phi$ meson is predominantly produced from a $^3P_1$ proton-proton entrance channel, other partial waves contribute significantly to the production mechanism at this beam momentum., Comment: Revtex 49 pages, 11 figures, Phys Rev C in print

Published
2000
Full Text
View/download PDF

6. Production of $\eta\prime$ Mesons in the $pp \to pp\eta\prime$ Reaction at 3.67 GeV/c

Author

Disto Collaboration, Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Choi, Seonho, Debowski, M., Dzemidzic, M., Faivre, J. -Cl., Falomkin, I. V., Fava, L., Ferrero, L., Foryciarz, J., Froehlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Ivanov, V. V., Jacobs, W. W., Kuehn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H. -W., Piragino, G., Pontecorvo, G. B., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, G.

Subjects
Nuclear Experiment
Abstract

The ratio of the total exclusive production cross sections for $\eta\prime$ and $\eta$ mesons has been measured in the $pp$ reaction at $p_{beam}=3.67$ GeV/c. The observed $\eta\prime/\eta$ ratio is $(0.83\pm{0.11}^{+0.23}_{-0.18})\times 10^{-2}$ from which the exclusive $\eta\prime$ meson production cross section is determined to be $(1.12\pm{0.15}^{+0.42}_{-0.31})\mu b$. Differential cross section distributions have been measured. Their shape is consistent with isotropic $\eta\prime$ meson production., Comment: 14 pages, 5 figures, accepted by Phys.Lett.B

Published
2000
Full Text
View/download PDF

7. K$^-$ Meson Production in the Proton-Proton Reaction at 3.67 GeV/c

Author

DISTO collaboration, Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Tchalyshev, V., Choi, Seonho, Debowski, M., Dzemidzic, M., Faivre, J. Cl., Falomkin, I. V., Fava, L., Ferrero, L., Foryciarz, J., Froehlich, I., Frolov, V., Garfagnini, R., Gill, D., Grasso, A., Grosse, E., Heinz, S., Ivanov, V. V., Jacobs, W. W., Kuehn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H. W., Piragino, G., Pontecorvo, G. B., Popov, A., Ritman, J., Salabura, P., Tosello, F., Vigdor, S. E., and Zosi, G.

Subjects
Nuclear Experiment
Abstract

The total cross section of the reaction $pp\to ppK^+K^-$ has been determined for proton--proton reactions with $p_{beam}=3.67 GeV/c$. This represents the first cross section measurement of the $pp \to ppK^-K^+$ channel near threshold, and is equivalent to the inclusive $pp\to ppK^-X$ cross section at this beam momentum. The cross section determined at this beam momentum is about a factor 20 lower than that for inclusive $pp\to ppK^+X$ meson production at the same CM energy above the corresponding threshold. This large difference in the $K^+$ and $K^-$ meson inclusive production cross sections in proton-proton reactions is in strong contrast to cross sections measured in sub-threshold heavy ion collisions, which are similar in magnitude at the same energy per nucleon below the respective thresholds., Comment: 12 pages, 3 figures Phys. Lett. B in print

Published
1999
Full Text
View/download PDF

8. Spin Transfer in Exclusive Lambda Production from pp Collisions at 3.67 GeV/c

Author

DISTO Collaboration, Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Chalyshev, V., Choi, Seonho, Debowski, M., Dzemidzic, M., Faivre, J. -Cl., Falomkin, I. V., Fava, L., Ferrero, L., Foryciarz, J., Frolov, V., Garfagnini, R., Gill, D., Grasso, A., Heinz, S., Ivanov, V. V., Jacobs, W. W., Kuehn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H. -W., Piragino, G., Pontecorvo, G. B., Popov, A., Ritman, J., Salabura, P., Tosello, F., Vigdor, S. E., and Zosi, G.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

We report the first polarization transfer measurements for exclusive hyperon production reactions. The normal spin transfer coefficient DNN for pp -> p K+ Lambda is large and negative for forward Lambda production at a beam momentum of 3.67 GeV/c, a result qualitatively consistent with expectations for a mechanism dominated by kaon-exchange and rescattering. The sign of DNN is opposite to that observed in the fragmentation regime for inclusive Lambda production at much higher energies., Comment: 4 pages, including 4 figures. To be published in PRL

Published
1999
Full Text
View/download PDF

9. New Limit for the Family-Number Non-conserving Decay mu+ to e+_gamma

Author

MEGA Collaboration, Brooks, M. L., Chen, Y. K., Cooper, M. D., Cooper, P. S., Dzemidzic, M., Empl, A., Gagliardi, C. A., Hogan, G. E., Hughes, E. B., Hungerford, E. V., Jui, C. C. H., Knott, J. E., Koetke, D. D., Lan, M. A. Kroupa K. A., Manweiler, R., Mayes, B. W., Mischke, R. E., Piilonen, L. E., Stanislaus, T. D. S., Stantz, K. M., Szymanski, J. J., Tribble, R. E., Tu, X. L., Van Ausdeln, L. A., von Witsch, W. H., Wright, S. C., and Ziock, K. O. H.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Experiment
Abstract

An experiment has been performed to search for the muon- and electron-number non-conserving decay mu+ to e+_gamma. The upper limit for the branching ratio to be GAMMA(mu+ to e+_gamma)/GAMMA(mu+ to e+_nu_nubar) < 1.2e-11 with 90% confidence., Comment: 4 pages, 3 figures, submitted to Phys. Rev. Lett

Published
1999
Full Text
View/download PDF

10. Dependence of pp->pp pi0 near Threshold on the Spin of the Colliding Nucleons

Author

Meyer, H. O., Balewski, J. T., Dzemidzic, M., Doskow, J., Pollock, R. E., Przewoski, B. v., Rinckel, T., Sperisen, F., Thörngren-Engblom, P., Wolanski, M., Haeberli, W., Lorentz, B., Rathmann, F., Schwartz, B., Wise, T., Daehnick, W. W., Flammang, R. W., Saha, Swapan K., Tedeschi, D. J., and Pancella, P. V.

Subjects
Nuclear Experiment
Abstract

A polarized internal atomic hydrogen target and a stored, polarized beam are used to measure the spin-dependent total cross section Delta_sigma_T/sigma_tot, as well as the polar integrals of the spin correlation coefficient combination A_xx-A_yy, and the analyzing power A_y for pp-> pp pi0 at four bombarding energies between 325 and 400 MeV. This experiment is made possible by the use of a cooled beam in a storage ring. The polarization observables are used to study the contribution from individual partial waves., Comment: 6 pages, 1 table, 4 figures, corrected equations 2 and 3

Published
1998
Full Text
View/download PDF

11. Exclusive η production in pp reactions

Author

Fröhlich, I., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Choi, Seonho, Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J.-Cl., Ferrero, A., Ferrero, L., Foryciarz, J., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H.-W., Piragino, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., Zosi, G., Elster, Charlotte, editor, Speth, Josef, editor, and Walcher, Thomas, editor

Published
2004
Full Text
View/download PDF

12. DISTO data on [formula omitted]

Author

Maggiora, M., Kienle, P., Suzuki, K., Yamazaki, T., Alexeev, M., Amoroso, A., Balestra, F., Bedfer, Y., Bertini, R., Bland, L.C., Brenschede, A., Brochard, F., Bussa, M.P., Choi, S., Colantoni, M.L., Dressler, R., Dzemidzic, M., Faivre, J.Cl., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W.W., Kühn, W., Maggiora, A., Panzieri, D., Sosio, S., Pfaff, H.W., Pontecorvo, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., and Vigdor, S.E.

Published
2010
Full Text
View/download PDF

13. Formation of the S = -1 resonance X(2265) in the reaction pp → X+K+ at 2.50 and 2.85 GeV

Author

Kienle, P., Maggiora, M., Suzuki, K., Yamazaki, T., Alexeev, M., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Chiosso, M., Choi, Seonho, Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J. -Cl., Ferrero, A., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Panzieri, D., Pfaff, H. -W., Pontecorvo, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, G.

Published
2012
Full Text
View/download PDF

14. First exclusive measurements of the K  −  pp state populated in the pp → K  +  Λp reaction at 2.85 GeV

Author

Yamazaki, T., Kienle, P., Suzuki, K., Maggiora, M., Alexeev, (M., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Chiosso, M., Choi, Seonho, Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J. -Cl., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Panzieri, D., Pfaff, H. -W., Pontecorvo, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., Zosi), G., and on behalf of DISTO Collaboration

Published
2009
Full Text
View/download PDF

15. Exclusive $\eta$ production in pp reactions

Author

Fröhlich, I., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Choi, Seonho, Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J.-Cl, Ferrero, A., Ferrero, L., Foryciarz, J., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H.-W., Piragino, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, G.

Published
2003
Full Text
View/download PDF

20. First exclusive measurements of the K−pp state populated in the pp → K+ Λp reaction at 2.85 GeV

Author

Yamazaki, T., Kienle, P., Suzuki, K., Maggiora, M., Alexeev, M., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Chiosso, M., Choi, Seonho, Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J. -Cl., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Panzieri, D., Pfaff, H. -W., Pontecorvo, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, G.

Published
2009

27. Exclusive η production in pp reactions

Author

Fröhlich, I., primary, Balestra, F., additional, Bedfer, Y., additional, Bertini, R., additional, Bland, L. C., additional, Brenschede, A., additional, Brochard, F., additional, Bussa, M. P., additional, Choi, Seonho, additional, Colantoni, M. L., additional, Dressler, R., additional, Dzemidzic, M., additional, Faivre, J.-Cl., additional, Ferrero, A., additional, Ferrero, L., additional, Foryciarz, J., additional, Frolov, V., additional, Garfagnini, R., additional, Grasso, A., additional, Heinz, S., additional, Jacobs, W. W., additional, Kühn, W., additional, Maggiora, A., additional, Maggiora, M., additional, Manara, A., additional, Panzieri, D., additional, Pfaff, H.-W., additional, Piragino, G., additional, Popov, A., additional, Ritman, J., additional, Salabura, P., additional, Tchalyshev, V., additional, Tosello, F., additional, Vigdor, S. E., additional, and Zosi, G., additional

Published
2003
Full Text
View/download PDF

29. The DISTO data acquisition system at SATURNE

Author

Balestra F., Bedfer, Y., Bertini, R., Bland, L.C., Brenschede, A., Brochard, F., Bussa, M.P., Choi, S., Debowski, M., Dzemidzic, M., Falomkin, I.V., Faivre, J.Cl., Fava, L., Ferrero, L., Foryciarz, J., Frolov, V., Garfagnini, R., Gill, D., Grasso, A., Grosse, E., Jacobs, W.W., Kuhn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H., Piragino, G., Pontecorvo, G.B., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S.E., and Zosi, G.

Subjects
Spectrometer -- Design and construction, Particle accelerators -- Equipment and supplies, Business, Electronics, Electronics and electrical industries
Abstract

The DISTO collaboration has built a large-acceptance magnetic spectrometer designed to provide broad kinematic coverage of multiparticle final states produced in pp scattering. The spectrometer has been installed in the polarized proton beam of the Saturne accelerator in Saclay to study polarization observables in the [Mathematical Expression Omitted] reaction and vector meson production ([Phi], [Omega] and [Rho]) in pp collisions. The data acquisition system is based on a VME 68030 CPU running the OS/9 operating system, housed in a single VME crate together with the CAMAC interface, the triple port ECL memories, and four RISC R3000 CPU. The digitization of signals from the detectors is made by PCOS III and FERA front-end electronics. Data of several events belonging to a single Saturne extraction are stored in VME triple-port ECL memories using a hardwired fast sequencer. The buffer, optionally filtered by the RISC R3000 CPU, is recorded on a DLT cassette by DAQ CPU using the on-board SCSI interface during the acceleration cycle. Two UNIX workstations are connected to the VME CPUs through a fast parallel bus and the Local Area Network. They analyze a subset of events for on-line monitoring. The data acquisition system is able to read and record 3500 ev/burst in the present configuration with a dead time of 15%.

Published
1998

30. The DISTO first level trigger at SATURNE

Author

Balestra, F., Bedfer, Y., Bertini, R., Bland, L.C., Brenschede, A., Brochard, F., Bussa, M.P., Choi, S., Debowski, M., Dzemidzic, M., Faivre, J.Cl., Fava, L., Ferrero, L., Foryciarz, J., Frolov, V., Garfagnini, R., Gill, D., Grasso, A., Heinz, S., Jacobs, W.W., Kuhn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H., Pontecorvo, G.B., Popov, A., Ritman, J., Salabura, P., Stroth, J., Tchalyshev, V., Tosello, F., Vigdor, S.E., and Zosi, G.

Subjects
Spectrometer -- Design and construction, Particles (Nuclear physics) -- Research, Collisions (Nuclear physics) -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The DISTO collaboration has built a large-acceptance magnetic spectrometer designed to provide broad kinematic coverage of multi-particle final states produced in pp scattering. The spectrometer has been installed in the polarized proton beam of the Saturne accelerator in Saclay to study polarization observables in the [Mathematical Expression Omitted] reaction and vector meson production ([Phi], [Omega] and [Rho]) in pp collisions. The common signature of such events is the multiplicity of four charged particles in the final state. A flexible 1st level trigger which uses topological information from fast detectors (scintillating fibers and hodoscope) has been built. It is completely software programmable through a menu-driven user interface and allows switching between production and monitor triggers on successive beam spills.

Published
1998

32. Meson production in pp reactions at 2.85 GeV

Author

Kühn, W., Baginyan, S.A., Balestra, F., Bedfer, Y., Bertini, R., Bland, L.C., Bonushkina, A.Yu., Brochard, F., Bussa, M.P., Chalyshev, V., Choi, S., Debowski, M., Dressler, R., Dzemidzic, M., Faivre, J.-Cl., Falomkin, I.V., Fava, L., Ferrero, L., Foryciarz, J., Frolov, V., Fröhlich, I., Garfagnini, R., Grasso, A., Heinz, S., Ivanov, V.V., Jacobs, W.W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H.-W., Piragino, G., Pontecorvo, G.B., Popov, A., Ritman, J., Rozhdestvensky, A.M., Salabura, P., Tosello, F., Vigdor, S.E., and Zosi, G.

Published
2001
Full Text
View/download PDF

33. Resonant and non resonant K− production in pp reactions at 2.85 GeV

Author

Ritman, J., Balestra, F., Bedfer, Y., Bertini, R., Bland, L.C., Brenschede, A., Brochard, F., Bussa, M.P., Choi, S., Debowski, M., Dressler, R., Dzemidzic, M., Faivre, J.-Cl., Falomkin, I.V., Fava, L., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Grosse, E., Heinz, S., Ivanov, V.V., Jacobs, W.W., Kühn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H.-W., Piragino, G., Pontecorvo, G.B., Popov, A., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S.E., and Zosi, G.

Published
2001
Full Text
View/download PDF

34. Production of η′ and K− mesons in pp reactions at 2.85 GeV

Author

Kühn, W., Balestra, F., Bedfer, Y., Bertini, R., Bland, L.C., Brochard, F., Bussa, M.P., Chalyshev, V., Choi, Seonho, Debowski, M., Dzemidzic, M., Faivre, J.-Cl., Falomkin, I.V., Fava, L., Ferrero, L., Foryciarz, J., Frolov, V., Fröhlich, T., Garfagnini, R., Gill, D., Grasso, A., Heinz, S., Tvanov, V.V., Jacobs, W.W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H.-W., Piragino, G., Pontecorvo, G.B., Popov, A., Ritman, J., Salabura, P., Tosello, F., Vigdor, S.E., and Zosi, G.

Published
2000
Full Text
View/download PDF

35. Spin observables in hyperon production

Author

Maggiora, M., Balestra, F., Bedfer, Y., Bertini, R., Bland, L.C., Brochard, F., Bussa, M.P., Chalyshev, V., Choi, Seonho, Debowski, M., Dzemidzic, M., Faivre, J.-Cl., Falomkin, I.V., Fava, L., Ferrero, L., Foryciarz, J., Frolov, V., Fröhlich, I., Garfagnini, R., Gill, D., Grasso, A., Heinz, S., Ivanov, V.V., Jacobs, W.W., Kühn, W., Maggiora, A., Manara, A., Panzieri, D., Pfaff, H.-W., Piragino, G., Pontecorvo, G.B., Popov, A., Ritman, J., Salabura, P., Tosello, F., Vigdor, S.E., and Zosi, G.

Published
2000
Full Text
View/download PDF

36. K − meson production in the proton–proton reaction at 3.67 GeV/ c

Author

Balestra, F., Bedfer, Y., Bertini, R., Bland, L.C., Brenschede, A., Brochard, F., Bussa, M.P., Tchalyshev, V., Choi, Seonho, Debowski, M., Dzemidzic, M., Faivre, J.-Cl., Falomkin, I.V., Fava, L., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Gill, D., Grasso, A., Grosse, E., Heinz, S., Ivanov, V.V., Jacobs, W.W., Kühn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H.-W., Piragino, G., Pontecorvo, G.B., Popov, A., Ritman, J., Salabura, P., Tosello, F., Vigdor, S.E., and Zosi, G.

Published
1999
Full Text
View/download PDF

37. DISTO: a large acceptance multiparticle spectrometer for 1–3 GeV proton beams

Author

Balestra, F., Bedfer, Y., Bertini, R., Bland, L.C., Brenschede, A., Brochard, F., Bussa, M.P., Chalyshev, V., Choi, Seonho, Debowski, M., Dzemidzic, M., Faivre, J.Cl., Falomkin, I.V., Fava, L., Ferrero, L., Foryciarz, J., Frolov, V., Garfagnini, R., Gill, D., Grasso, A., Grosse, E., Heinz, S., Jacobs, W.W., Kühn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H.W., Piragino, G., Pontecorvo, G.B., Popov, A., Ritman, J., Salabura, P., Senger, P., Stroth, J., Tosello, F., Vigdor, S.E., Zalikhanov, B., and Zosi, G.

Published
1999
Full Text
View/download PDF

38. K− meson production in the proton–proton reaction at 3.67 GeV/c

Author

DISTO collaboration, Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Tchalyshev, V., Choi, Seonho, Debowski, M., Dzemidzic, M., Faivre, J. Cl., Falomkin, I. V., Fava, L., Ferrero, L., Foryciarz, J., Froehlich, I., Frolov, V., Garfagnini, R., Gill, D., Grasso, A., Grosse, E., Heinz, S., Ivanov, V. V., Jacobs, W. W., Kuehn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H. W., Piragino, G., Pontecorvo, G. B., Popov, A., Ritman, J., Salabura, P., Tosello, F., Vigdor, S. E., and Zosi, G.

Subjects
Physics, Nuclear and High Energy Physics, Meson production, Proton, Meson, Nuclear Theory, FOS: Physical sciences, Nuclear physics, Momentum, Cross section (physics), Near threshold, Physics::Accelerator Physics, Nuclear Experiment (nucl-ex), Nuclear Experiment, Nucleon, Beam (structure)
Abstract

The total cross section of the reaction $pp\to ppK^+K^-$ has been determined for proton--proton reactions with $p_{beam}=3.67 GeV/c$. This represents the first cross section measurement of the $pp \to ppK^-K^+$ channel near threshold, and is equivalent to the inclusive $pp\to ppK^-X$ cross section at this beam momentum. The cross section determined at this beam momentum is about a factor 20 lower than that for inclusive $pp\to ppK^+X$ meson production at the same CM energy above the corresponding threshold. This large difference in the $K^+$ and $K^-$ meson inclusive production cross sections in proton-proton reactions is in strong contrast to cross sections measured in sub-threshold heavy ion collisions, which are similar in magnitude at the same energy per nucleon below the respective thresholds., 12 pages, 3 figures Phys. Lett. B in print

Published
1999

39. Formation of the S = -1 resonance X(2265) in the reaction $pp \rightarrow X+K^{+}$ at 2.50 and 2.85 GeV

Author

Kienle, P., Maggiora, M., Suzuki, K., Yamazaki, T., Alexeev, M., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Chiosso, M., Choi, Seonho, Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J.-Cl., Ferrero, A., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Panzieri, D., Pfaff, H.-W., Pontecorvo, G., Popov, A., Ritman, J., Salabura, Piotr, Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, G.

Published
2012

40. DISTO data on K(-)pp

Author

Maggiora, Marco, Kienle, P., Suzuki, K., Yamazaki, T., Alexeev, M., Amoroso, Antonio, Balestra, Ferruccio, Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, Maria Pia, Choi, S., Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J. C., Ferrero, L., Foryciarz, J., Frohlich, I., Frolov, V., Garfagnini, R., Grasso, Antonino, Heinz, S., Jacobs, W. W., Kuhn, W., Maggiora, A., Panzieri, D., Sosio, Stefano, Pfafl, H. W., Pontecorvo, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., and Vigdor, S. E.

Published
2010

41. Indication of a deeply bound and compact $K^{-}pp$ state formed in the $pp\rightarrow p\lambda K^{+}$ reaction at 2.85 GeV

Author

Yamazaki, T., Maggiora, M., Kienle, P., Suzuki, K., Amoroso, A., Alexeev, M., Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Choi, Seonho, Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J.-Cl., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Panzieri, D., Pfaff, H.-W., Pontecorvo, G., Popov, A., Ritman, J., Salabura, Piotr, Sosio, S., Tchalyshev, V., and Vigdor, E.

Published
2010

42. Indication of a Deeply Bound and Compact K − p p State Formed in the p p → p Λ K + Reaction at 2.85 GeV

Author

Yamazaki, T., Maggiora, M., Brenschede, A., Brochard, F., Bussa, M. P., Choi, Seonho, Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J.-Cl., Ferrero, L., Foryciarz, J., Kienle, P., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Panzieri, D., Pfaff, H.-W., Suzuki, K., Pontecorvo, G., Popov, A., Ritman, J., Salabura, P., Sosio, S., Tchalyshev, V., Vigdor, S. E., Amoroso, A., Alexeev, M., Balestra, F., Bedfer, Y., Bertini, R., and Bland, L. C.

Subjects
ddc:550
Published
2010

43. Indication of a Deeply Bound and Compact K- pp State Formed in the pp -> p Lambda K+ Reaction at 2.85 GeV

Author

Yamazaki, T, Maggiora, Marco, Kienle, P, Suzuki, K, Amoroso, Antonio, Alexeev, M, Balestra, Ferruccio, Bedfer, Y, Bertini, Raimondo Pietro, Bland, Lc, Brenschede, A, Brochard, F, Bussa, Maria Pia, Choi, S, Colantoni, Ml, Dressler, R, Dzemidzic, M, Faivre, Jc, Ferrero, Livio, Foryciarz, J, Frohlich, I, Frolov, Vladimir, Garfagnini, R, Grasso, Antonino, Heinz, S, Jacobs, Ww, Kuhn, W, Maggiora, A, Panzieri, Daniele, Pfaff, Hw, Pontecorvo, G, Popov, A, Ritman, J, Salabura, P, Sosio, Stefano, Tchalyshev, V, and Vigdor, Se

Subjects
SYSTEMS, NUCLEAR CLUSTERS
Published
2010

44. Exclusive eta production in pp reactions

Author

Frohlich, I, Balestra, Ferruccio, Bedfer, Y, Bertini, Raimondo Pietro, Bland, Lc, Brenschede, A, Brochard, F, Bussa, Maria Pia, Choi, S, Colantoni, M. L., Dressler, R, Dzemidzic, M, Faivre, Jc, Ferrero, Andrea, Ferrero, Livio, Foryciarz, J, Frolov, Vladimir, Garfagnini, Raffaello, Grasso, Antonino, Heinz, S, Jacobs, Ww, Kuhn, W, Maggiora, A, Maggiora, Marco, Manara, A., Panzieri, Daniele, Pfaff, Hw, Piragino, Guido, Popov, A, Ritman, J, Salabura, P, Tchalyshev, V, Tosello, F, and Vigdor, Se

Subjects
NUCLEON-NUCLEON COLLISIONS, PROTON-PROTON COLLISIONS, MESON PRODUCTION, PP-ETA+REACTION%22">PP->PP-ETA REACTION, OF-FLIGHT SPECTROMETER, NEAR-THRESHOLD
Published
2003

45. Vector meson production at 3.67-GeV/c

Author

Grasso, Antonino, Maggiora, Marco, Bussa, Maria Pia, Balestra, Ferruccio, Bedfer, Y., Bertini, Raimondo Pietro, Bland, L. C., Brenschede, A., Brochard, F., Seonho, Choi, Colantoni, M., Dressler, R., Dzemidzic, M., Faivre, J. C. l., Fava, Luciano, Ferrero, Andrea, Ferrero, Livio, Foryciarz, J., Frglich, I., Frolov, Vladimir, Garfagnini, Raffaello, Heinz, S., Jacobs, W. W., Kiihn, W., Maggiora, A., Manara, A., Panzieri, Daniele, Pfaff, H. W., Piragino, Guido, Pontecorvo, G. B., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, Gianfranco

Published
2003

46. rho0 meson production in the pp ---> pp pi+ pi- reaction at 3.67-GeV/c

Author

Grasso, Antonino, Balestra, Ferruccio, Bedfer, Y., Bertini, Raimondo Pietro, Bland, L. C., Brenschede, A., Brochard, F., Bussa, Maria Pia, Choi, Seonho, Colanton, M. L., Dressler, R., Dzemidzic, M., Faivre, J. C. l., Ferrero, Andrea, Ferrero, Livio, Foryciarz, J., Fröhlich, I., Frolov, Vladimir, Garfagnini, Raffaello, Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Maggiora, Marco, Manara, A., Panzieri, Daniele, Pfaff, H. W., Piragino, Guido, Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, Gianfranco

Published
2002

47. <font face='symbol'>r</font>0meson production in the pp->pp<font face=symbol>p</font>+<font face=symbol></font>p-reaction at 3.67 GeV/c

Author

Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Seon-Ho, C., Colantoni, M. L., Dressler, R., Dzemidzic, M., Faivre, J. C., Ferrero, A., Ferrero, L., Foryciarz, J., Frohlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kuhn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H. W., Piragino, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, G.

Abstract

kein Abstract

Published
2002

48. Rho(0) meson production in the pp--pppi(+)pi(-) reaction at 3.67 GeV/c

Author

Balestra, F., Bedfer, Y., Bertini, R., Bland, L. C., Brenschede, A., Brochard, F., Bussa, M. P., Choi, Seonho, Colanton, M. L., Dressler, R., Dzemidzic, M., Faivre, J. -Cl., Ferrero, A., Ferrero, L., Foryciarz, J., Fröhlich, I., Frolov, V., Garfagnini, R., Grasso, A., Heinz, S., Jacobs, W. W., Kühn, W., Maggiora, A., Maggiora, M., Manara, A., Panzieri, D., Pfaff, H. -W., Piragino, G., Popov, A., Ritman, J., Salabura, P., Tchalyshev, V., Tosello, F., Vigdor, S. E., and Zosi, G.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

Total and differential cross sections for the exclusive reaction pp->pp rho^0 observed via the pi+pi- decay channel have been measured at beam momentum=3.67 GeV/c. The observed total meson production cross section is determined to be 23.4 +- 0.8 +-8 microb and is significantly lower than typical cross sections used in model calculations for heavy ion collisions. The differential cross sections measured indicate a strong anisotropy cos^2(theta^{CM}) in the rho^0 meson production., Comment: 3 figures, 11 pages

Published
2001

49. Meson production in p p reactions at 2.85-GeV

Author

Grasso, Antonino, Kuhn, W., Baginyan, S. A., Balestra, Ferruccio, Bedfer, Y., Bertini, Raimondo Pietro, Bland, L. C., Bonushkina, A. Y., Brochard, F., Bussa, Maria Pia, Chalyshev, V., Choi, S., Debowski, M., Dressler, R., Dzemidzic, M., Faivre, J. C., Falomkin, I. V., Fava, Luciano, Ferrero, Livio, Foryciarz, J., Frolov, Vladimir, Frohlich, I., Garfagnini, Raffaello, Heinz, S., Ivanov, V. V., Jacobs, W. W., Maggiora, A., Maggiora, Marco, Manara, A., Panzieri, Daniele, Pfaff, H. W., Piragino, Guido, Pontecorvo, G. B., Popov, A., Ritman, J., Rozhdestvensky, A. M., Salabura, P., Tosello, F., Vigdor, S. E., and Zosi, Gianfranco

Published
2001

50. New results from DISTO for spin observables in exclusive hyperon production

Author

Maggiora, Marco, Balestra, Ferruccio, Bedfer, Y, Bertini, Raimondo Pietro, Bland, Lc, Brenschede, A, Brochard, F, Bussa, Maria Pia, Choi, S, Debowski, M, Dressler, R, Dzemidzic, M, Faivre, Jc, Falomkin, Iv, Fava, Luciano, Ferrero, Livio, Foryciarz, J, Frohlich, I, Frolov, Vladimir, Garfagnini, R, Grasso, Antonino, Grosse, E, Heinz, S, Ivanov, Vv, Jacobs, Ww, Kuhn, W, Maggiora, A, Manara, A, Panzieri, D, Pfaff, Hw, Piragino, Guido, Pontecorvo, Gb, Popov, A, Ritman, J, Salabura, P, Tchalyshev, V, Tosello, F, Vigdor, Se, and Zosi, Gianfranco

Subjects
strangeness, Yperon production, polarisation transfer, analysing power, spin observables, lambda, exclusive
Published
2001

Catalog

Books, media, physical & digital resources
See catalog results