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2. 7Li(18O, 17O)7Li reaction and the 17N + 8Be-potential

Author

A. T. Rudchik, Yu. M. Stepanenko, A. A. Rudchik, O. A. Ponkratenko, E. I. Koshchy, S. Kliczewski, K. Rusek, A. Budzanowski, S. Yu. Mezhevych, I. Skwirczyńska, R. Siudak, B. Czech, A. Szczurek, J. Choiński, L. Głowacka, and Val. M. Pirnak

Subjects
nuclear reactions, optical model, coupled-reaction-channels method, folding-model, spectroscopic amplitudes, Atomic physics. Constitution and properties of matter, QC170-197
Abstract

The new data of the angular distributions of 7Li(18O, 16N)9Be reaction were obtained for the transitions to the ground and excited states of 8Be and 17N at the energy Elab(18O) = 114 MeV. The angular distributions of the reaction were measured for the first time. Data were analyzed with coupled-reaction-channels method for one- and two-step transfers of nucleons and clusters. In the analysis, the 7Li + 18O potential deduced in the analysis of the elastic 7Li + 18Oscattering data as well as shell-model spectroscopic amplitudes of transferred nucleons and clusters were used. The parameters of the 9Be + 16N potential were deduced using the reaction data. The contributions of different one- and twostep transfers in the 7Li(18O, 16N)9Be reaction cross-section was studied.

Published
2011

3. Elastic and inelastic scattering of the 14C + 18O nuclei

Author

A. T. Rudchik, Yu. O. Shyrma, E. I. Koshchy, S. Kliczewski, B. G. Novatsky, O. A. Ponkratenko, E. Piasecki, G. P. Romanyshyna, K. Rusek, Yu. M. Stepanenko, I. Strojek, S. B. Sakuta, A. Budzanowski, L. Głowacka, I. Skwirczyńska, R. Siudak, J. Choiński, B. Czech, and A. Szczurek

Subjects
nuclear reactions, optical model, coupled-reaction-channels method, folding-model, spectroscopic amplitudes, optical potentials, reaction mechanisms, Atomic physics. Constitution and properties of matter, QC170-197
Abstract

New angular-distribution data of 14С + 18О elastic and inelastic scattering at the energy Elab(18O) = 105 MeV were obtained firstly. The data were analysed within the optical model and coupled-reaction-channels methods including contributions from most simple transfer reactions. The 14С + 18О potential parameters were deduced. Isotopic differenc-es of the 12, 13, 14С + 18О and 14С + 16, 18О potentials were investigated.

Published
2010

4. 7Li(18O, 17N)8Be reaction and the 17N + 8Be-potential

Author

A. T. Rudchik, Yu. M. Stepanenko, A. A. Rudchik, O. A. Ponkratenko, E. I. Koshchy, S. Kliczewski, K. Rusek, A. Budzanowski, S. Yu. Mezhevych, Val. M. Pirnak, I. Skwirczyńska, R. Siudak, B. Czech, A. Szczurek, J. Choiński, and L. Głowacka

Subjects
nuclear reactions, optical model, coupled-reaction-channels method, folding-model, spectroscopic ampli-tudes, optical potentials, reaction mechanisms, Atomic physics. Constitution and properties of matter, QC170-197
Abstract

Angular distributions of the 7Li(18O, 17N)8Be reaction were measured for the transitions to the ground states of 8Be and 17N and excited states of 17N at the energy Elab(18O) = 114 MeV. The data were analyzed with coupled-reaction-channels method for one- and two-step transfers of nucleons and clusters. In the analysis, the 7Li + 18O potential de-duced in the analysis of the elastic 7Li + 18O-scattering data as well as shell-model spectroscopic amplitudes of trans-ferred nucleons and clusters were used. Parameters of the 8Be + 17N potential were deduced using the reaction data. Contributions of different one- and two-step transfers in the 7Li(18O, 17N)8Be reaction cross-section was studied.

Published
2010

5. Isotopic effects in elastic and inelastic 12,13C + 16,18O scattering

Author

A. T. Rudchik, Yu. O. Shyrma, E. I. Koshchy, S. Kliczewski, B. G. Novatsky, O. A. Ponkratenko, E. Piasecki, G. P. Romanyshyna, K. Rusek, Yu. M. Stepanenko, I. Strojek, S. B. Sakuta, A. Budzanowski, L. Głowacka, I. Skwirczyńska, R. Siudak, J. Choiński, and A. Szczurek

Subjects
nuclear reactions, optical model, coupled-reaction-channels method, folding-model, Atomic physics. Constitution and properties of matter, QC170-197
Abstract

New angular-distribution data of 13С + 18О elastic and inelastic scattering at the energy Elab(18O) = 105 MeV were obtained for the transitions to the ground and excited states 3.088 MeV(1/2+), 3.555 MeV (1/2-), 3.854 MeV (5/2+) of 13С and 1.982 MeV (2+), 3.555 MeV (4+), 3.921 MeV (2+), 4.456 MeV (1-), 5.098 MeV (3-), 5.260 MeV (2+) of 18O. These and the 13С + 18О elastic scattering data taken from the literature at the energies Elab(18O) = 15, 20, 24, 31 MeV and Elab(13С) = 24 MeV were analysed within the optical model and coupled-reaction-channels methods. Sets of 13С + 18О optical potential parameters and their energy dependence were obtained. Contributions of potential scattering and transfer reactions to the elastic and inelastic channels of 13С + 18О scattering were studied. Isotopic differences (effects) in 12, 13С + 16, 18О optical potential parameters were investigated.

Published
2010

6. Elastic and inelastic scattering of 18O ions on 12C nuclei

Author

A. T. Rudchik, Yu. O. Shyrma, E. I. Koshchy, S. Kliczewski, B. G. Novatsky, O. A. Ponkratenko, E. Piasecki, G. P. Romanyshyna, K. Rusek, Yu. M. Stepanenko, I. Strojek, S. B. Sakuta, A. Budzanowski, L. Glowacka, I. Skwirczynska, R. Siudak, J. Choinski, and A. Szczurek

Subjects
nuclear reactions, optical model, coupled-reaction-channels method, folding-model, spectroscopic amplitudes, optical potentials, reaction mechanisms., Atomic physics. Constitution and properties of matter, QC170-197
Abstract

Angular distributions of the 12C + 18O elastic and inelastic scattering were measured at the energy Elab(18O) = 105 MeV (Ec.m. = 42 MeV). These data and data known from the literature at the energies Ec.m. = 12.9 - 56 МеV were analysed within the optical model and coupled-reactionchannels method. The sets of the Woods-Saxon (12С + 18O)-potential parameters were deduced and their energy dependence was studied. It was found the isotopic differences in the (12С + 16O)- and (12С + 18O)-potentials parameters and in their surface forms. The mechanisms of elastic and inelastic (12С + 18O)-scattering and role of transfer reactions were studied.

Published
2009
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7. Mechanism of charge-exchange in the 7Li(10B, 10Be)7Be reaction and potential of interaction of the 7Be + 10Be nuclei

Author

V. O. Romanyshyn, A. T. Rudchik, O. A. Ponkratenko, E. I. Koshchy, S. Kliczewski, K. Rusek, V. M. Kyryanchuk, S. Yu. Mezhevych, Val. M. Pirnak, A. A. Rudchik, A. Budzanowski, I. Skwirczyńska, R. Siudak, B. Czech, A. Szczurek, J. Choińskiv, and L. Głowacka

Subjects
Atomic physics. Constitution and properties of matter, QC170-197
Abstract

Angular distributions of the 7Li(10B, 10Bе)7Bе reaction were measured at the energy Elab(10B) = 51 MeV for the transitions to the ground and excited states of 10Bе and 7Bе nuclei. The measured 7Li(10B, 10Bе)7Bе reaction data as well as only known from the literature 10B(7Li, 7Bе)10Bе reaction data at the energy Elab(7Li) = 39 MeV were analyzed within DWBA method for the direct charge-exchange of the 10B → 10Bе, 7Li → 7Bе nuclei and within the coupled-reactionchannels method for one- and two-step transfers of nucleons and clusters such as 10B → Х → 10Bе, 7Li → Y → 7Bе. It was studied the contributions of different mechanisms to the angular distribution of the 7Li(10B, 10Bе)7Bе and 10B(7Li, 7Bе)10Bе reactions. Using data of these reactions, the parameters of the 7Bе + 10Bе-potential as well as their energy dependence were deduced by standard fitting procedure. The deduced 7Bе + 10Bе-potential is compared with the corresponding folding-potential calculated using nucleon distributions in 7Bе and 10Bе.

Published
2009
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8. Analysis of production of forward-angle fragments in the 22Ne (40 AMeV) + 9Be reaction

Author

G. Kaminski, A. G. Artyukh, A. Budzanowski, B. Erdemchimeg, S. A. Klygin, G. A. Kononenko, E. Kozik, T. I. Mikhailova, Yu. M. Sereda, Yu. G. Teterev, M. Veselsky, and A. N. Vorontzov

Subjects
Atomic physics. Constitution and properties of matter, QC170-197
Abstract

A mechanisms of production of forward-emitted fragments in the 22Ne (40 АMeV) + 9Be reaction are investigated. Inclusive velocity and isotopic distributions of products with 3 ≤ Z ≤ 11 were measured on the fragment separator COMBAS. The contribution of direct processes and dissipative ones is presented. Gaussian fitting functions according to Goldhaber formalism has been used to estimate direct components of fragments velocity distributions. Experimental data have been compared to geometric incomplete fusion model predictions. Incomplete fusion model was the first time applied for light nuclei as in the studied reaction system. Overall agreement of simulations with experiment in description of velocity distributions have been achieved for fragments with atomic number close to the projectile mass and for stable isotopes. Discrepancies for other products are the result of transition from incomplete fusion to direct processes with collisions of clusters in the participant zone.

Published
2008

9. Mechanism of 7Li(10B, 9Be)8Be, 10B(7Li, 9Be)8Be reactions and 8Be + 9Be-potential

Author

V. O. Romanyshyn, A. T. Rudchik, E. I. Koshchy, O. A. Ponkratenko, S. Kliczewski, A. Budzanowski, K. Rusek, L. Glowacka, S. Yu. Mezhevych, Val. M. Pirnak, A. A. Rudchik, I. Skwirczyńska, R. Siudak, J. Choiński, B. Czech, and A. Szczurek

Subjects
Atomic physics. Constitution and properties of matter, QC170-197
Abstract

Angular distributions of the 7Li(10B, 9Bе)8Bе were measured at the energy Elab(10B) = 51 MeV (21 MeV c.m.) for the ground and excited states of 8Bе. The experimental data were analyzed within the coupled-reaction-channels (CRC) method for one- and two-step transfers of nucleons and clusters. The 10B(7Li, 9Bе)8Bе reaction data at the energy Elab(7Li) = 24 MeV (14,12 MeV c.m.) known from the literature, were included in the CRC-analysis also. Mechanism of the reactions was determined, the parameters of the 8Bе + 9Bе-potential were deduced and energy dependence of the parameter was studied.

Published
2008

10. 7Li + 10B elastic and inelastic scattering

Author

A. T. Rudchik, V. O. Romanyshyn, E. I. Koshchy, A. Budzanowski, K. W. Kemper, K. Rusek, L.. Głowacka, V. M. Kyryanchuk, L. S. Kliczewski, S. Yu. Mezhevych, A. V. Mokhnach, O. A. Momotyuk, O. A. Ponkratenko, I. Skwirczyńska, R. Siudak, T. Choiński, V. D. Chesnokova, B. Czech, T. Czosnyka, and A. Szczurek

Subjects
Atomic physics. Constitution and properties of matter, QC170-197
Abstract

Angular distributions of the 7 Li + 10В elastic and inelastic scattering were measured at the energy Elab( 10B) = 51 MeV (21 MeV c.m.). These and previously measured 7 Li + 10В elastic scattering data known at the 7 Li-beam energies 24 MeV (14.1 MeV c.m.) and 39 MeV (22.94 MeV c.m.), were analyzed within the optical model and coupledreaction-channels method. Elastic and inelastic scattering of 7 Li + 10В, reorientation of 7 Li and 10В in ground and excited states as well as more important transfers were included in the coupling-channels scheme. The 7 Li + 10В potential parameters for the interaction of these nuclei in ground and excited states, parameter energy dependence as well as deformation parameters of 7 Li and 10В were deduced. Mechanism of the 7 Li + 10В scattering was obtained. Difference between scattering of 7 Li + 10В and 7 Li + 11В (scattering isotopic effects) was found.

Published
2007

13. The Diagnostic Pathway of Hirschsprung’s Disease in Paediatric Patients: A Single-Centre Experience

Author

Annita Budzanowski, Niamh Geoghegan, Alexander Macdonald, and Muhammad Choudhry

Subjects
Hirschsprung’s disease, rectal biopsy, aganglionosis, Pediatrics, RJ1-570
Abstract

Background: The presenting symptoms of patients with Hirschsprung’s disease (HD) are a failure to pass meconium, abdominal distension, and bilious vomiting. The gold standard diagnosis is a rectal biopsy to confirm aganglionosis. The aim of our study was to describe the diagnostic pathway of Hirschsprung’s disease at our institution and document the indication for a rectal biopsy. Methods: We have performed a prospective collection of all patients who underwent a rectal biopsy to exclude HD from December 2022 until September 2023 including. The following data were collected: patient’s age, presenting symptoms, type of biopsy, failure rate, complications, and histopathological results. Results: We identified 33 patients who underwent 34 rectal biopsies at 0.6 years of age. A total of 17 patients had a rectal suction biopsy (RSB), and 17 patients underwent a partial thickness under general anaesthesia (GA). 1/17 (6%) patients had an inconclusive RSB and subsequently underwent a biopsy under GA. Constipation and chronic abdominal distension plus vomiting were the most common presenting symptoms throughout all ages. Five patients (15%) had a rectal biopsy that was positive for HD. Conclusion: A protocolised approach to the assessment of infants and children with suspected HD ensures the appropriate utilisation of invasive procedures such as biopsy.

Published
2024
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15. The Diagnostic Pathway of Hirschsprung's Disease in Paediatric Patients: A Single-Centre Experience.

Author

Budzanowski, Annita, Geoghegan, Niamh, Macdonald, Alexander, and Choudhry, Muhammad

Subjects
RECTUM physiology, BIOPSY, DECISION making in clinical medicine, DESCRIPTIVE statistics, LONGITUDINAL method, OPERATIVE surgery, PATIENT-centered care, HIRSCHSPRUNG'S disease, MECONIUM, VOMITING, GENERAL anesthesia, CONSTIPATION, HEALTH care teams, SYMPTOMS, CHILDREN
Abstract

Background: The presenting symptoms of patients with Hirschsprung's disease (HD) are a failure to pass meconium, abdominal distension, and bilious vomiting. The gold standard diagnosis is a rectal biopsy to confirm aganglionosis. The aim of our study was to describe the diagnostic pathway of Hirschsprung's disease at our institution and document the indication for a rectal biopsy. Methods: We have performed a prospective collection of all patients who underwent a rectal biopsy to exclude HD from December 2022 until September 2023 including. The following data were collected: patient's age, presenting symptoms, type of biopsy, failure rate, complications, and histopathological results. Results: We identified 33 patients who underwent 34 rectal biopsies at 0.6 years of age. A total of 17 patients had a rectal suction biopsy (RSB), and 17 patients underwent a partial thickness under general anaesthesia (GA). 1/17 (6%) patients had an inconclusive RSB and subsequently underwent a biopsy under GA. Constipation and chronic abdominal distension plus vomiting were the most common presenting symptoms throughout all ages. Five patients (15%) had a rectal biopsy that was positive for HD. Conclusion: A protocolised approach to the assessment of infants and children with suspected HD ensures the appropriate utilisation of invasive procedures such as biopsy. [ABSTRACT FROM AUTHOR]

Published
2024
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16. Results of the ASY-EOS experiment at GSI: The symmetry energy at suprasaturation density

Author

Russotto, P., Gannon, S., Kupny, S., Lasko, P., Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Basrak, Z., Benlliure, J., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Caesar, C., Cardella, G., Cammarata, P., Chajecki, Z., Chartier, M., Chbihi, A., Colonna, M., Cozma, M. D., Czech, B., De Filippo, E., Di Toro, M., Famiano, M., Gašparić, I., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., Isobe, T., Kezzar, K., Kiš, M., Krasznahorkay, A., Kurz, N., La Guidara, E., Lanzalone, G., Fèvre, A. Le, Leifels, Y., Lemmon, R. C., Li, Q. F., Lombardo, I., Lukasik, J., Lynch, W. G., Marini, P., Matthews, Z., May, L., Minniti, T., Mostazo, M., Pagano, A., Pagano, E. V., Papa, M., Pawlowski, P., Pirrone, S., Politi, G., Porto, F., Reviol, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Santoro, S., Sarantites, D. G., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trautmann, W., Trifirò, A., Trimarchi, M., Tsang, M. B., Verde, G., Veselsky, M., Vigilante, M., Wang, Yongjia, Wieloch, A., Wigg, P., Winkelbauer, J., Wolter, H. H., Wu, P., Yennello, S., Zambon, P., Zetta, L., and Zoric, M.

Subjects
Nuclear Experiment
Abstract

Directed and elliptic flows of neutrons and light charged particles were measured for the reaction 197Au+197Au at 400 MeV/nucleon incident energy within the ASY-EOS experimental campaign at the GSI laboratory. The detection system consisted of the Large Area Neutron Detector LAND, combined with parts of the CHIMERA multidetector, of the ALADIN Time-of-flight Wall, and of the Washington-University Microball detector. The latter three arrays were used for the event characterization and reaction-plane reconstruction. In addition, an array of triple telescopes, KRATTA, was used for complementary measurements of the isotopic composition and flows of light charged particles. From the comparison of the elliptic flow ratio of neutrons with respect to charged particles with UrQMD predictions, a value \gamma = 0.72 \pm 0.19 is obtained for the power-law coefficient describing the density dependence of the potential part in the parametrization of the symmetry energy. It represents a new and more stringent constraint for the regime of supra-saturation density and confirms, with a considerably smaller uncertainty, the moderately soft to linear density dependence deduced from the earlier FOPI-LAND data. The densities probed are shown to reach beyond twice saturation., Comment: 25 pages, 22 figures, accepted for publication in Physical Review C

Published
2016
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17. Participant and spectator scaling of spectator fragments in Au+Au and Cu+Cu collisions at sqrt(sNN) = 19.6 and 22.4 GeV

Author

Alver, B., Back, B. B., Baker, M. D., Ballintijn, M., Barton, D. S., Betts, R. R., Bickley, A. A., Bindel, R., Budzanowski, A., Busza, W., Carroll, A., Chai, Z., Chetluru, V., Decowski, M. P., Garcia, E., Gburek, T., George, N., Gulbrandsen, K., Gushue, S., Halliwell, C., Hamblen, J., Harnarine, I., Heintzelman, G. A., Henderson, C., Hofman, D. J., Hollis, R. S., Holynski, R., Holzman, B., Iordanova, A., Johnson, E., Kane, J. L., Katzy, J., Khan, N., Kucewicz, W., Kulinich, P., Kuo, C. M., Li, W., Lin, W. T., Loizides, C., Manly, S., McLeod, D., Mignerey, A. C., Nouicer, R., Olszewski, A., Pak, R., Park, I. C., Pernegger, H., Reed, C., Remsberg, L. P., Reuter, M., Richardson, E., Roland, C., Roland, G., Rosenberg, L., Sagerer, J., Sarin, P., Sawicki, P., Sedykh, I., Skulski, W., Smith, C. E., Stankiewicz, M. A., Steinberg, P., Stephans, G. S. F., Sukhanov, A., Szostak, A., Tang, J. L., Tonjes, M. B., Trzupek, A., Vale, C., van Nieuwenhuizen, G. J., Vaurynovich, S. S., Verdier, R., Veres, G. I., Walters, P., Wenger, E., Willhelm, D., Wolfs, F. L. H., Wosiek, B., Wozniak, K., Wuosmaa, A. H., Wyngaardt, S., and Wyslouch, B.

Subjects
Nuclear Experiment
Abstract

Spectator fragments resulting from relativistic heavy ion collisions, consisting of single protons and neutrons along with groups of stable nuclear fragments up to Nitrogen (Z=7), are measured in PHOBOS. These fragments are observed in Au+Au (sqrt(sNN)=19.6 GeV) and Cu+Cu (22.4 GeV) collisions at high pseudorapidity ($\eta$). The dominant multiply-charged fragment is the tightly bound Helium ($\alpha$), with Lithium, Beryllium, and Boron all clearly seen as a function of collision centrality and pseudorapidity. We observe that in Cu+Cu collisions, it becomes much more favorable for the $\alpha$ fragments to be released than Lithium. The yields of fragments approximately scale with the number of spectator nucleons, independent of the colliding ion. The shapes of the pseudorapidity distributions of fragments indicate that the average deflection of the fragments away from the beam direction increases for more central collisions. A detailed comparison of the shapes for $\alpha$ and Lithium fragments indicates that the centrality dependence of the deflections favors a scaling with the number of participants in the collision., Comment: To be submitted to PRC 17 pages, 19 figures

Published
2015
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21. KRATTA, a versatile triple telescope array for charged reaction products

Author

Łukasik, J., Pawłowski, P., Budzanowski, A., Czech, B., Skwirczyńska, I., Brzychczyk, J., Adamczyk, M., Kupny, S., Lasko, P., Sosin, Z., Wieloch, A., Kiš, M., Leifels, Y., and Trautmann, W.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

A new detection system KRATTA, Krak\'ow Triple Telescope Array, is presented. This versatile, low threshold, broad energy range system has been built to measure the energy, emission angle, and isotopic composition of light charged reaction products. It consists of 38 independent modules which can be arranged in an arbitrary configuration. A single module, covering actively about 4.5 msr of the solid angle at the optimal distance of 40 cm from the target, consists of three identical, 0.500 mm thick, large area photodiodes, used also for direct detection, and of two CsI(1500 ppm Tl) crystals of 2.5 and 12.5 cm length, respectively. All the signals are digitally processed. The lower identification threshold, due to the thickness of the first photodiode, has been reduced to about 2.5 MeV for protons (~0.065 mm of Si equivalent) by applying a pulse shape analysis. The pulse shape analysis allowed also to decompose the complex signals from the middle photodiode into their ionization and scintillation components and to obtain a satisfactory isotopic resolution with a single readout channel. The upper energy limit for protons is about 260 MeV. The whole setup is easily portable. It performed very well during the ASY-EOS experiment, conducted in May 2011 at GSI. The structure and performance of the array are described using the results of Au+Au collisions at 400 MeV/nucleon obtained in this experiment., Comment: 10 pages, 18 figures, accepted by Nucl. Instr. and Meth. A

Published
2013
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22. The ASY-EOS experiment at GSI: investigating the symmetry energy at supra-saturation densities

Author

Russotto, P., Chartier, M., De Filippo, E., Févre, A. Le, Gannon, S., Gašparić, I., Kiš, M., Kupny, S., Leifels, Y., Lemmon, R. C., Łukasik, J., Marini, P., Pagano, A., Pawłowski, P., Santoro, S., Trautmann, W., Veselsky, M., Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Baran, V., Basrak, Z., Benlliure, J., Boiano, C., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Cardella, G., Cammarata, P., Chajecki, Z., Chbihi, A., Colonna, M., Cozma, D., Czech, B., Di Toro, M., Famiano, M., Geraci, E., Greco, V., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., Isobe, T., Kezzar, K., Krasznahorkay, A., Kurz, N., La Guidara, E., Lanzalone, G., Lasko, P., Li, Q., Lombardo, I., Lynch, W. G., Matthews, Z., May, L., Minniti, T., Mostazo, M., Papa, M., Pirrone, S., Politi, G., Porto, F., Reifarth, R., Reisdorf, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifiró, A., Trimarchi, M., Tsang, M. B., Verde, G., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H. H., Wu, P., Yennello, S., Zambon, P., Zetta, L., and Zoric, M.

Subjects
Nuclear Experiment
Abstract

The elliptic-flow ratio of neutrons with respect to protons in reactions of neutron rich heavy-ions systems at intermediate energies has been proposed as an observable sensitive to the strength of the symmetry term in the nuclear Equation Of State (EOS) at supra-saturation densities. The recent results obtained from the existing FOPI/LAND data for $^{197}$Au+$^{197}$Au collisions at 400 MeV/nucleon in comparison with the UrQMD model allowed a first estimate of the symmetry term of the EOS but suffer from a considerable statistical uncertainty. In order to obtain an improved data set for Au+Au collisions and to extend the study to other systems, a new experiment was carried out at the GSI laboratory by the ASY-EOS collaboration in May 2011., Comment: Talk given by P. Russotto at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)

Published
2012
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23. Technical Design Report for the: PANDA Micro Vertex Detector

Author

PANDA Collaboration, Erni, W., Keshelashvili, I., Krusche, B., Steinacher, M., Heng, Y., Liu, Z., Liu, H., Shen, X., Wang, Q., Xu, H., Albrecht, M., Becker, J., Eickel, K., Feldbauer, F., Fink, M., Friedel, P., Heinsius, F. H., Held, T., Koch, H., Kopf, B., Leyhe, M., Motzko, C., Pelizäus, M., Pychy, J., Roth, B., Schröder, T., Schulze, J., Steinke, M., Trifterer, T., Wiedner, U., Zhong, J., Beck, R., Becker, M., Bianco, S., Brinkmann, K. -Th., Hammann, C., Hinterberger, F., Jäkel, R., Kaiser, D., Kliemt, R., Koop, K., Schmidt, C., Schnell, R., Thoma, U., Vlasov, P., Wendel, C., Winnebeck, A., Würschig, Th., Zaunick, H. -G., Bianconi, A., Bragadireanu, M., Caprini, M., Ciubancan, M., Pantea, D., Tarta, P. -D, De Napoli, M., Giacoppo, F., Rapisarda, E., Sfienti, C., Fiutowski, T., Idzik, N., Mindur, B., Przyborowski, D., Swientek, K., Bialkowski, E., Budzanowski, A., Czech, B., Kliczewski, S., Kozela, A., Kulessa, P., Lebiedowicz, P., Malgorzata, K., Pysz, K., Schäfer, W., Siudak, R., Szczurek, A., Brandys, P., Czyzewski, T., Czyzycki, W., Domagala, M., Hawryluk, M., Filo, G., Kwiatkowski, D., Lisowski, E., Lisowski, F., Bardan, W., Gil, D., Kamys, B., Kistryn, St., Korcyl, K., Krzemieñ, W., Magiera, A., Moskal, P., Rudy, Z., Salabura, P., Smyrski, J., Wroñska, A., Al-Turany, M., Arora, R., Augustin, I., Deppe, H., Dutta, D., Flemming, H., Götzen, K., Hohler, G., Karabowicz, R., Lehmann, D., Lewandowski, B., Lühning, J., Maas, F., Orth, H., Peters, K., Saito, T., Schepers, G., Schmidt, C. J., Schmitt, L., Schwarz, C., Schwiening, J., Voss, B., Wieczorek, P., Wilms, A., Abazov, V. M., Alexeev, G. D., Arefiev, V. A., Astakhov, V. I., Barabanov, M. Yu., Batyunya, B. V., Davydov, Yu. I., Dodokhov, V. Kh., Efremov, A. A., Fedunov, A. G., Feshchenko, A. A., Galoyan, A. S., Grigoryan, S., Karmokov, A., Koshurnikov, E. K., Lobanov, V. I., Lobanov, Yu. Yu., Makarov, A. F., Malinina, L. V., Malyshev, V. L., Mustafaev, G. A., Olshevski, A. G., Pasyuk, M. A., Perevalova, E. A., Piskun, A. A., Pocheptsov, T. A., Pontecorvo, G., Rodionov, V. K., Rogov, Yu. N., Salmin, R. A., Samartsev, A. G., Sapozhnikov, M. G., Shabratova, G. S., Skachkova, A. N., Skachkov, N. B., Strokovsky, E. A., Suleimanov, M. K., Teshev, R. Sh., Tokmenin, V. V., Uzhinsky, V. V., Vodopyanov, A. S., Zaporozhets, S. A., Zhuravlev, N. I., Zorin, A. G., Branford, D., Glazier, D., Watts, D., Woods, P., Britting, A., Eyrich, W., Lehmann, A., Uhlig, F., Dobbs, S., Metreveli, Z., Seth, K., Tann, B., Tomaradze, A., Bettoni, D., Carassiti, V., Dalpiaz, P., Drago, A., Fioravanti, E., Garzia, I., Negrini, M., Savriè, M., Stancari, G., Dulach, B., Gianotti, P., Guaraldo, C., Lucherini, V., Pace, E., Bersani, A., Macri, M., Marinelli, M., Parodi, R. F., Dormenev, V., Drexler, P., Düren, M., Eisner, T., Foehl, K., Hayrapetyan, A., Koch, P., Krïoch, B., Kühn, W., Lange, S., Liang, Y., Liu, M., Merle, O., Metag, V., Moritz, M., Nanova, M., Novotny, R., Spruck, B., Stenzel, H., Strackbein, C., Thiel, M., Clarkson, T., Euan, C., Hill, G., Hoek, M., Ireland, D., Kaiser, R., Keri, T., Lehmann, I., Livingston, K., Lumsden, P., MacGregor, D., McKinnon, B., Montgomery, R., Murray, M., Protopopescu, D., Rosner, G., Seitz, B., Yang, G., Babai, M., Biegun, A. K., Glazenborg-Kluttig, A., Guliyev, E., Jothi, V. S., Kavatsyuk, M., Lemmens, P., Löhner, H., Messchendorp, J., Poelman, T., Smit, H., van der Weele, J. C., Sohlbach, H., Büscher, M., Dosdall, R., Dzhygadlo, R., Esch, S., Gillitzer, A., Goldenbaum, F., Grunwald, D., Jha, V., Kemmerling, G., Kleines, H., Lehrach, A., Maier, R., Mertens, M., Ohm, H., Pohl, D. L., Prasuhn, D., Randriamalala, T., Ritman, J., Roeder, M., Sterzenbach, G., Stockmanns, T., Wintz, P., Wüstner, P., Kisiel, J., Li, S., Li, Z., Sun, Z., Fissum, K., Hansen, K., Isaksson, L., Lundin, M., Schröder, B., Achenbach, P., Denig, A., Distler, M., Fritsch, M., Kangh, D., Karavdina, A., Lauth, W., Michel, M., Espi, M. C. Mora, Pochodzalla, J., Sanchez, S., Sanchez-Lorente, A., Weber, T., Dormenev, V. I., Fedorov, A. A., Korzhik, M. V., Missevitch, O. V., Balanutsa, V., Chernetsky, V., Demekhin, A., Dolgolenko, A., Fedorets, P., Gerasimov, A., Goryachev, V., Boukharov, A., Malyshev, O., Marishev, I., Semenov, A., Varma, R., Ketzer, B., Konorov, I., Mann, A., Neubert, S., Paul, S., Vandenbroucke, M., Zhang, Q., Khoukaz, A., Rausmann, T., Täschner, A., Wessels, J., Baldin, E., Kotov, K., Peleganchuk, S., Tikhonov, Yu., Hennino, T., Imre, M., Kunne, R., Galliard, C. Le, Normand, J. P. Le, Marchand, D., Maroni, A., Ong, S., Pouthas, J., Ramstein, B., Rosier, P., Sudol, M., Theneau, C., Tomasi-Gustafsson, E., Van de Wiele, J., Zerguerras, T., Boca, G., Braghieri, A., Costanza, S., Fontana, A., Genova, P., Lavezzi, L., Montagna, P., Rotondi, A., Buda, V., Abramov, V. V., Davidenko, A. M., Derevschikov, A. A., Goncharenko, Y. M., Grishin, V. N., Kachanov, V. A., Konstantinov, D. A., Kormilitsin, V. A., Matulenko, Y. A., Melnik, Y. M., Meschanin, A. P., Minaev, N. G., Mochalov, V. V., Morozov, D. A., Nogach, L. V., Nurushev, S. B., Ryazantsev, A. V., Semenov, P. A., Soloviev, L. F., Uzunian, A. V., Vasiliev, A. N., Yakutin, A. E., Belostotski, S., Gavrilov, G., Itzotov, A., Kisselev, A., Kravchenko, P., Manaenkov, S., Miklukho, O., Naryshkin, Y., Veretennikov, D., Vikhrov, V., Zhadanov, A., Bäck, T., Cederwall, B., Bargholtz, C., Gerén, L., Tegnér, P. E., Thørngren, P., von Würtemberg, K. M., Fava, L., Alberto, D., Amoroso, A., Bussa, M. P., Busso, L., De Mori, F., Destefanis, M., Ferrero, L., Greco, M., Kugathasan, T., Maggiora, M., Marcello, S., Sosio, S., Spataro, S., Calvo, D., Coli, S., De Remigis, P., Filippi, A., Giraudo, G., Lusso, S., Mazza, G., Mignone, M., Rivetti, A., Wheadon, R., Zotti, L., Morra, O., Iazzi, F., Lavagno, A., Quarati, P., Szymanska, K., Birsa, R., Bradamante, F., Bressan, A., Martin, A., Clement, H., Galnander, B., Calén, H., Fransson, K., Johansson, T., Kupsc, A., Marciniewski, P., Thomé, E., Wolke, M., Zlomanczuk, J., Díaz, J., Ortiz, A., Buda, P., Dmowski, K., Korzeniewski, R., Przemyslaw, D., Slowinski, B., Borsuk, S., Chlopik, A., Guzik, Z., Kopec, J., Kozlowski, T., Melnychuk, D., Plominski, M., Szewinski, J., Traczyk, K., Zwieglinski, B., Bühler, P., Gruber, A., Kienle, P., Marton, J., Widmann, E., and Zmeskal, J.

Subjects
Physics - Instrumentation and Detectors
Abstract

This document illustrates the technical layout and the expected performance of the Micro Vertex Detector (MVD) of the PANDA experiment. The MVD will detect charged particles as close as possible to the interaction zone. Design criteria and the optimisation process as well as the technical solutions chosen are discussed and the results of this process are subjected to extensive Monte Carlo physics studies. The route towards realisation of the detector is outlined., Comment: 189 pages, 225 figures, 41 tables

Published
2012

24. Upper limits for a narrow resonance in the reaction p + p -> K^+ + (Lambda p)

Author

Budzanowski, A., Chatterjee, A., Clement, H., Hawranek, P., Hinterberger, F., Jahn, R., Joosten, R., Kilian, K., Kirillov, Da., Kirillov, Di., Kliczewski, S., Kolev, D., Kravcikova, M., Lesiak, M., Machner, H., Magiera, A., Martinska, G., Piskunov, N., Protic, D., Ritman, J., von Rossen, P., Roy, J., Sibirtsev, A., Sitnik, I., Siudak, R., Tsenov, R., Ulbrich, K., Urban, J., and Wagner, G. J.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

The reaction pp -> K^+ + (Lambda p) has been measured at T_p = 1.953 GeV and \Theta = 0 deg with a high missing mass resolution in order to study the Lambda p final state interaction. Narrow S = -1 resonances predicted by bag model calculations are not visible in the missing mass spectrum. Small structures observed in a previous experiment are not confirmed. Upper limits for the production cross section of a narrow resonance are deduced for missing masses between 2058 and 2105 MeV/c^2., Comment: 8 pages, 5 figures

Published
2011
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25. Phobos results on charged particle multiplicity and pseudorapidity distributions in Au+Au, Cu+Cu, d+Au, and p+p collisions at ultra-relativistic energies

Author

Alver, B., Back, B. B., Baker, M. D., Ballintijn, M., Barton, D. S., Betts, R. R., Bickley, A. A., Bindel, R., Budzanowski, A., Busza, W., Carroll, A., Chai, Z., Chetluru, V., Decowski, M. P., Garcıa, E., Gburek, T., George, N., Gulbrandsen, K., Gushue, S., Halliwell, C., Hamblen, J., Heintzelman, G. A., Henderson, C., Hofman, D. J., Hollis, R. S., Holynski, R., Holzman, B., Iordanova, A., Johnson, E., Kane, J. L., Katzy, J., Khan, N., Kucewicz, J. Kotula W., Kulinich, P., Kuo, C. M., Li, W., Lin, W. T., Loizides, C., Manly, S., McLeod, D., Michalowski, J., Mignerey, A. C., Nouicer, R., Olszewski, A., Pak, R., Park, I. C., Pernegger, H., Reed, C., Remsberg, L. P., Reuter, M., Roland, C., Roland, G., Rosenberg, L., Sagerer, J., Sarin, P., Sawicki, P., Sedykh, I., Skulski, W., Smith, C. E., Steadman, S. G., Steinberg, P., Stephans, G. S. F., Stodulski, M., Sukhanov, A., Tonjes, M. B., Trzupek, A., Vale, C., van Nieuwenhuizen, G. J., Vaurynovich, S. S., Verdier, R., Veres, G. I., Wadsworth, B., Walters, P., Wenger, E., Wolfs, F. L. H., Wosiek, B., Wozniak, K., Wuosmaa, A. H., and Wyslouch, B.

Subjects
Nuclear Experiment
Abstract

Pseudorapidity distributions of charged particles emitted in $Au+Au$, $Cu+Cu$, $d+Au$, and $p+p$ collisions over a wide energy range have been measured using the PHOBOS detector at RHIC. The centrality dependence of both the charged particle distributions and the multiplicity at midrapidity were measured. Pseudorapidity distributions of charged particles emitted with $|\eta|<5.4$, which account for between 95% and 99% of the total charged-particle emission associated with collision participants, are presented for different collision centralities. Both the midrapidity density, $dN_{ch}/d\eta$, and the total charged-particle multiplicity, $N_{ch}$, are found to factorize into a product of independent functions of collision energy, $\sqrt{s_{_{NN}}}$, and centrality given in terms of the number of nucleons participating in the collision, $N_{part}$. The total charged particle multiplicity, observed in these experiments and those at lower energies, assumes a linear dependence of $(\ln s_{_{NN}})^2$ over the full range of collision energy of $\sqrt{s_{_{NN}}}$=2.7-200 GeV., Comment: 25 pages, 29 figures, 8 tables

Published
2010
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26. Study of the $\bm{p+^6}$Li$\bm{\to\eta+^7}$Be reaction 11.3 MeV above threshold

Author

Budzanowski, A., Chatterjee, A., Hawranek, P., Jahn, R., Jha, V., Kilian, K., Kliczewski, S., Kirillov, Da., Kirillov, Di., Kolev, D., Kravcikova, M., Lesiak, M., Lieb, J., Machner, H., Magiera, A., Maier, R., Martinska, G., Piskunov, N., Protić, D., Ritman, J., von Rossen, P., Roy, B. J., Sitnik, I., Siudak, R., Tsenov, R., Urban, J., and Vankova, G.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The cross section for the reaction $p+^6\text{Li}\to\eta+^7\text{Be}$ was measured at an excess energy of 11.28 MeV above threshold by detecting the recoiling $^7$Be nuclei. A dedicated set of focal plane detectors was built for the magnetic spectrograph Big Karl and was used for identification and four momentum measurement of the $^7$Be. A differential cross section of $\frac{d\sigma}{d\Omega}=(0.69\pm{0.20}\text{(stat.)}\pm 0.20\text{(syst.)})\text{nb/sr}$ for the ground state plus the 1/2$^-$ was measured. The result is compared to model calculations., Comment: accepted by Phys. Rev. C as rapid communication

Published
2010
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27. Cross section of the $pp\to K^+\Sigma^+n$ reaction close to threshold

Author

Budzanowski, A., Chatterjee, A., Clement, H., Dorochkevitch, E., Hawranek, P., Hinterberger, F., Jahn, R., Joosten, R., Kilian, K., Kliczewski, S., Kirillov, Da., Kirillov, Di., Kolev, D., Kravcikova, M., Lesiak, M., Magiera, A., Machner, H., Martinska, G., Piskunov, N., Protic, D., Ritman, J., von Rossen, P., Sibirtsev, A., Sitnik, I., Siudak, R., Tsenov, R., Ulbrich, K., Urban, J., and Wagner, G. J.

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

We have measured inclusive data on $K^+$-meson production in $pp$ collisions at COSY J\"ulich close to the hyperon production threshold and determined the hyperon-nucleon invariant mass spectra. The spectra were decomposed into three parts: $\Lambda p$, $\Sigma^0p$ and $\Sigma^+n$. The cross section for the $\Sigma^+n$ channel was found to be much smaller than a previous measurement in that excess energy region. The data together with previous results at higher energies are compatible with a phase space dependence., Comment: accepted by Phys. lett. B some typos corrected

Published
2010
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28. High resolution study of the Lambda p final state interaction in the reaction p + p -> K+ + (Lambda p)

Author

Budzanowski, A., Chatterjee, A., Clement, H., Dorochkevitch, E., Hawranek, P., Hinterberger, F., Jahn, R., Joosten, R., Kilian, K., Kliczewski, S., Kirillov, Da., Kirillov, Di., Kolev, D., Kravcikova, M., Lesiak, M., Machner, H., Magiera, A., Martinska, G., Piskunov, N., Ritman, J., von Rossen, P., Roy, B. J., Sibirtsev, A., Sitnik, I., Siudak, R., Tsenov, R., Ulbrich, K., Urban, J., and Wagner, G. J.

Subjects
Nuclear Experiment
Abstract

The reaction pp -> K+ + (Lambda p) was measured at Tp=1.953 GeV and Theta = 0 deg with a high missing mass resolution in order to study the Lambda p final state interaction. The large final state enhancement near the Lambda p threshold can be described using the standard Jost-function approach. The singlet and triplet scattering lengths and effective ranges are deduced by fitting simultaneously the Lambda p invariant mass spectrum and the total cross section data of the free Lambda p scattering., Comment: submitted to Physics Letters B, 10 pages, 3 figures

Published
2010
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29. Hadron Fluence Measurements with LiF-TLD Sensors at the Proton Synchrotron Accelerator at CERN

Author

Ilgner, Christoph, Budzanowski, Maciej, and Obryk, Barbara

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Physics - Accelerator Physics
Abstract

In view of the implementation of beam-monitoring sensors for CERN's Large Hadron Collider (LHC), and also in order to validate Thermoluminescence Detectors as a versatile tool to measure ionizing radiation doses in mixed fields at hadron colliders such as the LHC, chemical vapor deposition diamond sensors have been evaluated and calibrated at CERN's Proton Synchrotron accelerator. Special attention was paid to understanding whether lithiumfluoride thermoluminescence detectors are suitable as measuring devices in these radiation fields.

Published
2010

30. Multifragmentation in Collisions of 4.4gev-Deuterons with Gold Target

Author

Avdeyev, S. P., Karnaukhov, V. A., Oeschler, H., Kirakosyan, V. V., Rukoyatkin, P. A., Budzanowski, A., Karcz, W., Norbeck, E., and Botvina, A. S.

Subjects
Nuclear Experiment
Abstract

The relative velocity correlation function of pairs of intermediate mass fragments has been studied for d+Au collitions at 4.4 GeV. Experimental correlation functions are compared to that obtained by multibody Coulomb trajectory calculations under the assumption of various decay timees of the fragmenting system. The combined approach with the empirically modified intranuclear cascade code followed by the statistical multifragmentation model was used to generate the starting conditions for these calculations. The fragment emossion time is found to be less than 40 fm/c., Comment: Accepted for publication in Bulletin of the Russian Academy of Sciences. Physics

Published
2010
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31. Cross sections of the $pp\to K^+\Sigma^+n$ reaction close to threshold

Author

The HIRES Collaboration, Budzanowski, A., Chatterjee, A., Clement, H., Dorochkevitch, E., Hawranek, P., Hinterberger, F., Jahn, R., Joosten, R., Kilian, K., Kliczewski, S., Kirilov, Da., Kirillov, Di., Kolev, D., Kravcikova, M., Lesiak, M., Machner, H., Magiera, A., Martinska, G., Piskunov, N., Ritman, J., von Rossen, P., Roy, B. J., Sibirtsev, A., Sitnik, I., Siudak, R., Tsenov, R., Ulbrich, K., Urban, J., and Wagner, G. J.

Subjects
Nuclear Experiment
Abstract

The paper is obsolete

Published
2009

32. Evidence of Ni break-up from total production cross sections in p+Ni collisions

Author

Budzanowski, A., Fidelus, M., Filges, D., Goldenbaum, F., Hodde, H., Jarczyk, L., Kamys, B., Kistryn, M., Kistryn, St., Kliczewski, St., Kowalczyk, A., Kozik, E., Kulessa, P., Machner, H., Magiera, A., Piskor-Ignatowicz, B., Pysz, K., Rudy, Z., Siudak, R., and Wojciechowski, M.

Subjects
Nuclear Experiment
Abstract

The total production cross sections of light charged particles (LCPs), intermediate mass fragments (IMFs) and heavy reaction products of p+Ni collisions available in the literature have been compared with predictions of a two-step model in the proton beam energy range from reaction threshold up to approximately 3 GeV. Model cross sections were calculated assuming, that the reaction proceeds via an intranuclear cascade of nucleon-nucleon collisions followed by evaporation of particles from an equilibrated, heavy target residuum. The shape of the excitation functions was well described by model calculations for all reaction products. The magnitude of the cross sections was reasonably well reproduced for heavy reaction products, i.e. for nuclei heavier than Al, but the cross sections for lighter products were systematically underestimated. This fact was used as an argument in favor of a significant break-up contribution to the reaction mechanism. The present conclusions are supported by recently published results of investigations of differential cross sections in p+Ni collisions, which showed that hypothesis of the break-up of target nucleus is indispensable for a good reproduction of d2 sigma/dOmega dE for LCPs and IMFs., Comment: 5 pages, 4 figures

Published
2009

33. Variation of nonequilibrium processes in p+Ni system with beam energy

Author

Budzanowski, A., Fidelus, M., Filges, D., Goldenbaum, F., Hodde, H., Jarczyk, L., Kamys, B., Kistryn, M., Kistryn, St., Kliczewski, St., Kowalczyk, A., Kozik, E., Kulessa, P., Machner, H., Magiera, A., Piskor-Ignatowicz, B., Pysz, K., Rudy, Z., Siudak, R., and Wojciechowski, M.

Subjects
Nuclear Experiment
Abstract

The energy and angular dependence of double differential cross sections dsigma/dOmega dE were measured for p, d, t, 3,4He, 6,7Li, 7,9Be, and 10,11B produced in collisions of 0.175 GeV protons with Ni target. The analysis of measured dfferential cross sections allowed to extract total production cross sections for ejectiles listed above. The shape of the spectra and angular distributions indicate the presence of other nonequilibrium processes besides the emission of nucleons from the intranuclear cascade, and besides the evaporation of various particles from remnants of intranuclear cascade. These nonequilibrium processes consist of coalescence of nucleons into light charged particles during the intranuclear cascade, of the fireball emission which contributes to the cross sections of protons and deuterons, and of the break-up of the target nucleus which leads to the emission of intermediate mass fragments. All such processes were found earlier at beam energies 1.2, 1.9, and 2.5 GeV for Ni as well as for Au targets, however, significant differences in properties of these processes at high and low beam energy are observed in the present study., Comment: 10 pages, 9 figures

Published
2009
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34. Comparison of nonequilibrium processes in p+Ni and p+Au collisions at GeV energies

Author

Budzanowski, A., Fidelus, M., Filges, D., Goldenbaum, F., Hodde, H., Jarczyk, L., Kamys, B., Kistryn, M., Kistryn, St., Kliczewski, St., Kowalczyk, A., Kozik, E., Kulessa, P., Machner, H., Magiera, A., Piskor-Ignatowicz, B., Pysz, K., Rudy, Z., Siudak, R., and Wojciechowski, M.

Subjects
Nuclear Experiment
Abstract

The energy and angular dependence of double differential cross sections d2sigma/dOmega dE were measured for p, d, t, 3,4,6He, 6,7,8Li, 7,9,10Be, 10,11B, and C produced in collisions of 1.2, 1.9, and 2.5 GeV protons with a Ni target. The shape of the spectra and angular distributions does almost not change whereas the absolute value of the cross sections increases by a factor about 1.7 for all ejectiles in this beam energy range. It was found that energy and angular dependencies of the cross sections cannot be reproduced by the microscopic model of intranuclear cascade with coalescence of nucleons and the statistical model for evaporation of particles from excited, equilibrated residual nuclei. The inclusion of nonequilibrium processes, described by a phenomenological model of the emission from fast and hot moving sources, resulting from break-up of the target nucleus by impinging proton, leads to very good reproduction of data. Cross sections of these processes are quite large, exhausting approximately half of the total production cross sections. Due to good reproduction of energy and angular dependencies of d2sigma/dOmega dE by model calculation it was possible to determine total production cross sections for all studied ejectiles. Results obtained in this work point to the analogous reaction mechanism for proton induced reactions on Ni target as that observed previously for Au target in the same beam energy range., Comment: 11 pages, 10 figures

Published
2009
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35. Technical Design Report for the PANDA Solenoid and Dipole Spectrometer Magnets

Author

The PANDA Collaboration, Erni, W., Keshelashvili, I., Krusche, B., Steinacher, M., Heng, Y., Liu, Z., Liu, H., Shen, X., Wang, O., Xu, H., Becker, J., Feldbauer, F., Heinsius, F. -H., Held, T., Koch, H., Kopf, B., Pelizaeus, M., Schroeder, T., Steinke, M., Wiedner, U., Zhong, J., Bianconi, A., Bragadireanu, M., Pantea, D., Tudorache, A., Tudorache, V., De Napoli, M., Giacoppo, F., Raciti, G., Rapisarda, E., Sfienti, C., Bialkowski, E., Budzanowski, A., Czech, B., Kistryn, M., Kliczewski, S., Kozela, A., Kulessa, P., Pysz, K., Schaefer, W., Siudak, R., Szczurek, A., zycki, W. Czy., Domagala, M., Hawryluk, M., Lisowski, E., Lisowski, F., Wojnar, L., Gil, D., Hawranek, P., Kamys, B., Kistryn, St., Korcyl, K., Krzemien, W., Magiera, A., Moskal, P., Rudy, Z., Salabura, P., Smyrski, J., Wronska, A., Al-Turany, M., Augustin, I., Deppe, H., Flemming, H., Gerl, J., Goetzen, K., Hohler, R., Lehmann, D., Lewandowski, B., Luehning, J., Maas, F., Mishra, D., Orth, H., Peters, K., Saito, T., Schepers, G., Schmidt, C. J., Schmitt, L., Schwarz, C., Voss, B., Wieczorek, P., Wilms, A., Brinkmann, K. -T., Freiesleben, H., Jaekel, R., Kliemt, R., Wuerschig, T., Zaunick, H. -G., Abazov, V. M., Alexeev, G., Arefiev, A., Astakhov, V. I., Barabanov, M. Yu., Batyunya, B. V., Davydov, Yu. I., Dodokhov, V. Kh., Efremov, A. A., Fedunov, A. G., Feshchenko, A. A., Galoyan, A. S., Grigoryan, S., Karmokov, A., Koshurnikov, E. K., Kudaev, V. Ch., Lobanov, V. I., Lobanov, Yu. Yu., Makarov, A. F., Malinina, L. V., Malyshev, V. L., Mustafaev, G. A., Olshevski, A., Pasyuk, M. A., Perevalova, E. A., Piskun, A. A., Pocheptsov, T. A., Pontecorvo, G., Rodionov, V. K., Rogov, Yu. N., Salmin, R. A., Samartsev, A. G., Sapozhnikov, M. G., Shabratova, A., Shabratova, G. S., Skachkova, A. N., Skachkov, N. B., Strokovsky, E. A., Suleimanov, M. K., Teshev, R. Sh., Tokmenin, V. V., Uzhinsky, V. V., Vodopianov, A. S., Zaporozhets, S. A., Zhuravlev, N. I., Zorin, A. G., Branford, D., Foehl, K., Glazier, D., Watts, D., Woods, P., Eyrich, W., Lehmann, A., Teufel, A., Dobbs, S., Metreveli, Z., Seth, K., Tann, B., Tomaradze, A., Bettoni, D., Carassiti, V., Cecchi, A., Dalpiaz, P., Fioravanti, E., Garzia, I., Negrini, M., Savri`e, M., Stancari, G., Dulach, B., Gianotti, P., Guaraldo, C., Lucherini, V., Pace, E., Bersani, A., Macri, M., Marinelli, M., Parodi, R. F., Brodski, I., Doering, W., Drexler, P., Dueren, M., Gagyi-Palffy, Z., Hayrapetyan, A., Kotulla, M., Kuehn, W., Lange, S., Liu, M., Metag, V., Nanova, M., Novotny, R., Salz, C., Schneider, J., Schoenmeier, P., Schubert, R., Spataro, S., Stenzel, H., Strackbein, C., Thiel, M., Thoering, U., Yang, S., Clarkson, T., Cowie, E., Downie, E., Hill, G., Hoek, M., Ireland, D., Kaiser, R., Keri, T., Lehmann, I., Livingston, K., Lumsden, S., MacGregor, D., McKinnon, B., Murray, M., Protopopescu, D., Rosner, G., Seitz, B., Yang, G., Babai, M., Biegun, A. K., Bubak, A., Guliyev, E., Jothi, V. S., Kavatsyuk, M., Loehner, H., Messchendorp, J., Smit, H., van der Weele, J. C., Garcia, F., Riska, D. -O., Buescher, M., Dosdall, R., Dzhygadlo, R., Gillitzer, A., Grunwald, D., Jha, V., Kemmerling, G., Kleines, H., Lehrach, A., Maier, R., Mertens, M., Ohm, H., Prasuhn, D., Randriamalala, T., Ritman, J., Roeder, M., Stockmanns, T., Wintz, P., Wuestner, P., Kisiel, J., Li, S., Li, Z., Sun, Z., Fissum, S., Hansen, K., Isaksson, L., Lundin, M., Schroeder, B., Achenbach, P., Espi, M. C. Mora, Pochodzalla, J., Sanchez, S., Sanchez-Lorente, A., Dormenev, V. I., Fedorov, A. A., Korzhik, M. V., Missevitch, O. V., Balanutsa, V., Chernetsky, V., Demekhin, A., Dolgolenko, A., Fedorets, P., Gerasimov, A., Goryachev, V., Boukharov, A., Malyshev, O., Marishev, I., Semenov, A., Hoeppner, C., Ketzer, B., Konorov, I., Mann, A., Neubert, S., Paul, S., Weitzel, Q., Khoukaz, A., Rausmann, T., Taeschner, A., Wessels, J., Varma, R., Baldin, E., Kotov, K., Peleganchuk, S., Tikhonov, Yu., Boucher, J., Hennino, T., Kunne, R., Ong, S., Pouthas, J., Ramstein, B., Rosier, P., Sudol, M., Van de Wiele, J., Zerguerras, T., Dmowski, K., Korzeniewski, R., Przemyslaw, D., Slowinski, B., Boca, G., Braghieri, A., Costanza, S., Fontana, A., Genova, P., Lavezzi, L., Montagna, P., Rotondi, A., Belikov, N. I., Davidenko, A. M., Derevschikov, A. A., Goncharenko, Y. M., Grishin, V. N., Kachanov, V. A., Konstantinov, D. A., Kormilitsin, V. A., Kravtsov, V. I., Matulenko, Y. A., Melnik, Y. M., Meschanin, A. P., Minaev, N. G., Mochalov, V. V., Morozov, D. A., Nogach, L. V., Nurushev, S. B., Ryazantsev, A. V., Semenov, P. A., Soloviev, L. F., Uzunian, A. V., Vasiliev, A. N., Yakutin, A. E., Baeck, T., Cederwall, B., Bargholtz, C., Geren, L., Tegner, P. E., Belostotski, S., Gavrilov, G., Itzotov, A., Kisselev, A., Kravchenko, P., Manaenkov, S., Miklukho, O., Naryshkin, Y., Veretennikov, D., Vikhrov, V., Zhadanov, A., Fava, L., Panzieri, D., Alberto, D., Amoroso, A., Botta, E., Bressani, T., Bufalino, S., Bussa, M. P., Busso, L., De Mori, F., Destefanis, M., Ferrero, L., Grasso, A., Greco, M., Kugathasan, T., Maggiora, M., Marcello, S., Serbanut, G., Sosio, S., Bertini, R., Calvo, D., Coli, S., De Remigis, P., Feliciello, A., Filippi, A., Giraudo, G., Mazza, G., Rivetti, A., Szymanska, K., Tosello, F., Wheadon, R., Morra, O., Agnello, M., Iazzi, F., Birsa, R., Bradamante, F., Bressan, A., Martin, A., Clement, H., Ekstroem, C., Calen, H., Grape, S., Hoeistad, B., Johansson, T., Kupsc, A., Marciniewski, P., Thome, E., Zlomanczuk, J., Diaz, J., Ortiz, A., Borsuk, S., Chlopik, A., Guzik, Z., Kopec, J., Kozlowski, T., Melnychuk, D., Plominski, M., Szewinski, J., Traczyk, K., Zwieglinski, B., Buehler, P., Gruber, A., Kienle, P., Marton, J., Widmann, E., and Zmeskal, J.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

This document is the Technical Design Report covering the two large spectrometer magnets of the PANDA detector set-up. It shows the conceptual design of the magnets and their anticipated performance. It precedes the tender and procurement of the magnets and, hence, is subject to possible modifications arising during this process., Comment: 10 pages, 14MB, accepted by FAIR STI in May 2009, editors: Inti Lehmann (chair), Andrea Bersani, Yuri Lobanov, Jost Luehning, Jerzy Smyrski, Technical Coordiantor: Lars Schmitt, Bernd Lewandowski (deputy), Spokespersons: Ulrich Wiedner, Paola Gianotti (deputy)

Published
2009

36. Precision measurements of the pp\to \pi^+pn and pp\to \pi^+d reactions: importance of long-range and tensor force effects

Author

Budzanowski, A., Chatterjee, A., Hawranek, P., Jahn, R., Jha, V., Kilian, K., Kirillov, Da., Kirillov, Di., Kliczewski, S., Kolev, D., Kravcikova, M., Lesiak, M., Lieb, J., Machner, H., Magiera, A., Maier, R., Martinska, G., Nedev, S., Niskanen, J. A., Piskunov, N., Protic, D., Ritman, 6 J., von Rossen, P., Roy, B. J., Sitnik, I., Siudak, R., Stein, H. J., Tsenov, R., Urban, J., Vankova, 2 G., and Wilkin, C.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Inclusive measurements of pion production in proton--proton collisions in the forward direction were undertaken at 400 and 600 MeV at COSY using the Big Karl spectrograph. The high resolution in the $\pi^+$ momentum ensured that there was an unambiguous separation of the $pp\to {\pi}^+d/\pi^+pn$ channels. Using these and earlier data, the ratio of the production cross sections could be followed through the $\Delta$ region and compared with the predictions of final state interaction theory. Deviations are strongly influenced by long-range terms in the production operator and the tensor force in the final $pn$ system. These have been investigated in a realistic $pp\to\pi^+d/\pi^+pn$ calculation that includes $S \rightleftharpoons D$ channel coupling between the final nucleons. A semi-quantitative understanding of the observed effects is achieved., Comment: 10 pages, 3 figures

Published
2009
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37. Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons

Author

PANDA Collaboration, Erni, W., Keshelashvili, I., Krusche, B., Steinacher, M., Heng, Y., Liu, Z., Liu, H., Shen, X., Wang, O., Xu, H., Becker, J., Feldbauer, F., Heinsius, F. -H., Held, T., Koch, H., Kopf, B., Pelizaeus, M., Schroeder, T., Steinke, M., Wiedner, U., Zhong, J., Bianconi, A., Bragadireanu, M., Pantea, D., Tudorache, A., Tudorache, V., De Napoli, M., Giacoppo, F., Raciti, G., Rapisarda, E., Sfienti, C., Bialkowski, E., Budzanowski, A., Czech, B., Kistryn, M., Kliczewski, S., Kozela, A., Kulessa, P., Pysz, K., Schaefer, W., Siudak, R., Szczurek, A., zycki, W. Czy., Domagala, M., Hawryluk, M., Lisowski, E., Lisowski, F., Wojnar, L., Gil, D., Hawranek, P., Kamys, B., Kistryn, St., Korcyl, K., Krzemien, W., Magiera, A., Moskal, P., Rudy, Z., Salabura, P., Smyrski, J., Wronska, A., Al-Turany, M., Augustin, I., Deppe, H., Flemming, H., Gerl, J., Goetzen, K., Hohler, R., Lehmann, D., Lewandowski, B., Luehning, J., Maas, F., Mishra, D., Orth, H., Peters, K., Saito, T., Schepers, G., Schmidt, C. J., Schmitt, L., Schwarz, C., Voss, B., Wieczorek, P., Wilms, A., Brinkmann, K. -T., Freiesleben, H., Jaekel, R., Kliemt, R., Wuerschig, T., Zaunick, H. -G., Abazov, V. M., Alexeev, G., Arefiev, A., Astakhov, V. I., Barabanov, M. Yu., Batyunya, B. V., Davydov, Yu. I., Dodokhov, V. Kh., Efremov, A. A., Fedunov, A. G., Feshchenko, A. A., Galoyan, A. S., Grigoryan, S., Karmokov, A., Koshurnikov, E. K., Kudaev, V. Ch., Lobanov, V. I., Lobanov, Yu. Yu., Makarov, A. F., Malinina, L. V., Malyshev, V. L., Mustafaev, G. A., Olshevski, A., Pasyuk, M. A., Perevalova, E. A., Piskun, A. A., Pocheptsov, T. A., Pontecorvo, G., Rodionov, V. K., Rogov, Yu. N., Salmin, R. A., Samartsev, A. G., Sapozhnikov, M. G., Shabratova, A., Shabratova, G. S., Skachkova, A. N., Skachkov, N. B., Strokovsky, E. A., Suleimanov, M. K., Teshev, R. Sh., Tokmenin, V. V., Uzhinsky, V. V., Vodopianov, A. S., Zaporozhets, S. A., Zhuravlev, N. I., Zorin, A. G., Branford, D., Foehl, K., Glazier, D., Watts, D., Woods, P., Eyrich, W., Lehmann, A., Teufel, A., Dobbs, S., Metreveli, Z., Seth, K., Tann, B., Tomaradze, A., Bettoni, D., Carassiti, V., Cecchi, A., Dalpiaz, P., Fioravanti, E., Garzia, I., Negrini, M., Savri`e, M., Stancari, G., Dulach, B., Gianotti, P., Guaraldo, C., Lucherini, V., Pace, E., Bersani, A., Macri, M., Marinelli, M., Parodi, R. F., Brodski, I., Doering, W., Drexler, P., Dueren, M., Gagyi-Palffy, Z., Hayrapetyan, A., Kotulla, M., Kuehn, W., Lange, S., Liu, M., Metag, V., Nanova, M., Novotny, R., Salz, C., Schneider, J., Schoenmeier, P., Schubert, R., Spataro, S., Stenzel, H., Strackbein, C., Thiel, M., Thoering, U., Yang, S., Clarkson, T., Cowie, E., Downie, E., Hill, G., Hoek, M., Ireland, D., Kaiser, R., Keri, T., Lehmann, I., Livingston, K., Lumsden, S., MacGregor, D., McKinnon, B., Murray, M., Protopopescu, D., Rosner, G., Seitz, B., Yang, G., Babai, M., Biegun, A. K., Bubak, A., Guliyev, E., Jothi, V. S., Kavatsyuk, M., Loehner, H., Messchendorp, J., Smit, H., van der Weele, J. C., Garcia, F., Riska, D. -O., Buescher, M., Dosdall, R., Dzhygadlo, R., Gillitzer, A., Grunwald, D., Jha, V., Kemmerling, G., Kleines, H., Lehrach, A., Maier, R., Mertens, M., Ohm, H., Prasuhn, D., Randriamalala, T., Ritman, J., Roeder, M., Stockmanns, T., Wintz, P., Wuestner, P., Kisiel, J., Li, S., Li, Z., Sun, Z., Fissum, S., Hansen, K., Isaksson, L., Lundin, M., Schroeder, B., Achenbach, P., Espi, M. C. Mora, Pochodzalla, J., Sanchez, S., Sanchez-Lorente, A., Dormenev, V. I., Fedorov, A. A., Korzhik, M. V., Missevitch, O. V., Balanutsa, V., Chernetsky, V., Demekhin, A., Dolgolenko, A., Fedorets, P., Gerasimov, A., Goryachev, V., Boukharov, A., Malyshev, O., Marishev, I., Semenov, A., Hoeppner, C., Ketzer, B., Konorov, I., Mann, A., Neubert, S., Paul, S., Weitzel, Q., Khoukaz, A., Rausmann, T., Taeschner, A., Wessels, J., Varma, R., Baldin, E., Kotov, K., Peleganchuk, S., Tikhonov, Yu., Boucher, J., Hennino, T., Kunne, R., Ong, S., Pouthas, J., Ramstein, B., Rosier, P., Sudol, M., Van de Wiele, J., Zerguerras, T., Dmowski, K., Korzeniewski, R., Przemyslaw, D., Slowinski, B., Boca, G., Braghieri, A., Costanza, S., Fontana, A., Genova, P., Lavezzi, L., Montagna, P., Rotondi, A., Belikov, N. I., Davidenko, A. M., Derevschikov, A. A., Goncharenko, Y. M., Grishin, V. N., Kachanov, V. A., Konstantinov, D. A., Kormilitsin, V. A., Kravtsov, V. I., Matulenko, Y. A., Melnik, Y. M., Meschanin, A. P., Minaev, N. G., Mochalov, V. V., Morozov, D. A., Nogach, L. V., Nurushev, S. B., Ryazantsev, A. V., Semenov, P. A., Soloviev, L. F., Uzunian, A. V., Vasiliev, A. N., Yakutin, A. E., Baeck, T., Cederwall, B., Bargholtz, C., Geren, L., Tegner, P. E., Belostotski, S., Gavrilov, G., Itzotov, A., Kisselev, A., Kravchenko, P., Manaenkov, S., Miklukho, O., Naryshkin, Y., Veretennikov, D., Vikhrov, V., Zhadanov, A., Fava, L., Panzieri, D., Alberto, D., Amoroso, A., Botta, E., Bressani, T., Bufalino, S., Bussa, M. P., Busso, L., De Mori, F., Destefanis, M., Ferrero, L., Grasso, A., Greco, M., Kugathasan, T., Maggiora, M., Marcello, S., Serbanut, G., Sosio, S., Bertini, R., Calvo, D., Coli, S., De Remigis, P., Feliciello, A., Filippi, A., Giraudo, G., Mazza, G., Rivetti, A., Szymanska, K., Tosello, F., Wheadon, R., Morra, O., Agnello, M., Iazzi, F., Birsa, R., Bradamante, F., Bressan, A., Martin, A., Clement, H., Ekstroem, C., Calen, H., Grape, S., Hoeistad, B., Johansson, T., Kupsc, A., Marciniewski, P., Thome, E., Zlomanczuk, J., Diaz, J., Ortiz, A., Borsuk, S., Chlopik, A., Guzik, Z., Kopec, J., Kozlowski, T., Melnychuk, D., Plominski, M., Szewinski, J., Traczyk, K., Zwieglinski, B., Buehler, P., Gruber, A., Kienle, P., Marton, J., Widmann, E., Zmeskal, J., Lutz, M. F. M., Pire, B., Scholten, O., and Timmermans, R.

Subjects
High Energy Physics - Experiment
Abstract

To study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitations, the physics of strange and charm quarks and nucleon structure studies will be performed with unprecedented accuracy thereby allowing high-precision tests of the strong interaction. The proposed PANDA detector is a state-of-the art internal target detector at the HESR at FAIR allowing the detection and identification of neutral and charged particles generated within the relevant angular and energy range. This report presents a summary of the physics accessible at PANDA and what performance can be expected., Comment: 216 pages

Published
2009

38. Search for $\eta$-mesic nuclei in recoil-free transfer reaction

Author

Collaboration, The COSY-GEM and Budzanowski, A.

Subjects
Nuclear Experiment
Abstract

We have studied the reaction $p+{^{27}Al}\to {^3{He}}+p+\pi^-+X$ at recoil-free kinematics. An $\eta$ meson possibly produced in this reaction would be thus almost at rest in the laboratory system and could therefore be bound with high probability, if nuclear $\eta$ states exist. The decay of such a state through the $N^*(1535)$ resonance would lead to a proton-$\pi^-$ pair emitted in opposite directions. For these conditions we find some indication of such a bound state. An upper limit of $\approx$ 0.5 nb is found., Comment: 3 figures

Published
2008
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39. Cross Section and Tensor Analysing Power of the $\vec{d}d\to \eta\alpha$ Reaction Near Threshold

Author

The GEM Collaboration, Budzanowski, A., Chatterjee, A., Gebel, R., Hawranek, P., Jahn, R., Jha, V., Kilian, K., Kliczewski, S., Kirillov, Da., Kirillov, Di., Kolev, D., Kravcikova, M., Lesiak, M., Lieb, J., Machner, H., Magiera, A., Maier, R., Martinska, G., Nedev, S., Piskunov, N., Prasuhn, D., Protić, D., Ritman, J., von Rossen, P., Roy, B. J., Sitnik, U., Siudak, R., Tsenov, R., Urban, J., Vankova, G., and Wilkin, C.

Subjects
Nuclear Experiment
Abstract

The angular distributions of the unpolarised differential cross section and tensor analysing power $A_{xx}$ of the $\vec{d}d\to\alpha \eta$ reaction have been measured at an excess energy of 16.6 MeV. The ambiguities in the partial-wave description of these data are made explicit by using the invariant amplitude decomposition. This allows the magnitude of the s-wave amplitude to be extracted and compared with results published at lower energies. In this way, firmer bounds could be obtained on the scattering length of the $\eta \alpha$ system. The results do not, however, unambiguously prove the existence of a quasi-bound $\eta \alpha$ state., Comment: 20 pages, 11 figures

Published
2008
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40. Search for the 3He-eta bound state at COSY-11

Author

Krzemien, W., Smyrski, J., Budzanowski, A., Czerwinski, E., Czyzykiewicz, R., Gil, D., Grzonka, D., Jarczyk, L., Kamys, B., Khoukaz, A., Klaja, P., Moskal, P., Oelert, W., Przerwa, J., Ritman, J., Sefzick, T., Siemaszko, M., Silarski, M., Taeschner, A., Wolke, M., Wuestner, P., Zdebik, J., Zielinski, M. J., and Zipper, W.

Subjects
Nuclear Experiment
Abstract

We have measured excitation function for dp -> ppp_pi- reaction near the eta production threshold. We observe an enhancement of the counting rate above the threshold which can originate from the production of the eta meson in the reaction dp -> 3He eta and its subsequent absorption on neutron in the 3He nucleus leading to creation of the p_pi- pair., Comment: Presented at 10th International Workshop on Meson Production, Properties and Interaction (MESON 2008), Cracow, Poland, 6 - 10 June 2008, 4 pages, 4 figures,references added

Published
2008
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41. Isospin dependence of the eta prime meson production in nucleon-nucleon collisions

Author

Przerwa, J., Moskal, P., Budzanowski, A., Czerwinski, E., Czyzykiewicz, R., Gil, D., Grzonka, D., Jarczyk, L., Johansson, T., Kamys, B., Khoukaz, A., Klaja, P., Krzemien, W., Oelert, W., Piskor-Ignatowicz, C., Ritman, J., Rejdych, B., Sefzick, T., Siemaszko, M., Silarski, M., Smyrski, J., Taeschner, A., Wolke, M., Wuestner, P., Zdebik, J., Zielinski, M. J., and Zipper, W.

Subjects
Nuclear Experiment
Abstract

A comparison of the close-to-threshold total cross section for the eta prime production in pp --> pp eta prime and pn --> pn eta prime reactions constitutes a tool to investigate the eta prime meson structure and the reaction mechanism in the channels of isospin I=0 and I=1 and may provide insight into the flavour-singlet (perhaps also into gluonium) content of the eta prime meson. In this contribution we present preliminary results of measurement of the quasi-free production of the eta prime meson in the proton-neutron collisions conducted using the COSY-11 facility., Comment: Presented at 10th International Workshop on Meson Production, Properties and Interaction (MESON 2008), Cracow, Poland, 6 - 10 June 2008

Published
2008
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42. Technical Design Report for PANDA Electromagnetic Calorimeter (EMC)

Author

PANDA Collaboration, Erni, W., Keshelashvili, I., Krusche, B., Steinacher, M., Heng, Y., Liu, Z., Liu, H., Shen, X., Wang, O., Xu, H., Becker, J., Feldbauer, F., Heinsius, F. -H., Held, T., Koch, H., Kopf, B., Pelizaeus, M., Schroeder, T., Steinke, M., Wiedner, U., Zhong, J., Bianconi, A., Bragadireanu, M., Pantea, D., Tudorache, A., Tudorache, V., De Napoli, M., Giacoppo, F., Raciti, G., Rapisarda, E., Sfienti, C., Bialkowski, E., Budzanowski, A., Czech, B., Kistryn, M., Kliczewski, S., Kozela, A., Kulessa, P., Pysz, K., Schaefer, W., Siudak, R., Szczurek, A., zycki, W. Czy., Domagala, M., Hawryluk, M., Lisowski, E., Lisowski, F., Wojnar, L., Gil, D., Hawranek, P., Kamys, B., Kistryn, St., Korcyl, K., Krzemien, W., Magiera, A., Moskal, P., Rudy, Z., Salabura, P., Smyrski, J., Wronska, A., Al-Turany, M., Augustin, I., Deppe, H., Flemming, H., Gerl, J., Goetzen, K., Hohler, R., Lehmann, D., Lewandowski, B., Luehning, J., Maas, F., Mishra, D., Orth, H., Peters, K., Saito, T., Schepers, G., Schmidt, C. J., Schmitt, L., Schwarz, C., Voss, B., Wieczorek, P., Wilms, A., Brinkmann, K. -T., Freiesleben, H., Jaekel, R., Kliemt, R., Wuerschig, T., Zaunick, H. -G., Abazov, V. M., Alexeev, G., Arefiev, A., Astakhov, V. I., Barabanov, M. Yu., Batyunya, B. V., Davydov, Yu. I., Dodokhov, V. Kh., Efremov, A. A., Fedunov, A. G., Feshchenko, A. A., Galoyan, A. S., Grigoryan, S., Karmokov, A., Koshurnikov, E. K., Kudaev, V. Ch., Lobanov, V. I., Lobanov, Yu. Yu., Makarov, A. F., Malinina, L. V., Malyshev, V. L., Mustafaev, G. A., Olshevski, A., Pasyuk, M. A., Perevalova, E. A., Piskun, A. A., Pocheptsov, T. A., Pontecorvo, G., Rodionov, V. K., Rogov, Yu. N., Salmin, R. A., Samartsev, A. G., Sapozhnikov, M. G., Shabratova, A., Shabratova, G. S., Skachkova, A. N., Skachkov, N. B., Strokovsky, E. A., Suleimanov, M. K., Teshev, R. Sh., Tokmenin, V. V., Uzhinsky, V. V., Vodopianov, A. S., Zaporozhets, S. A., Zhuravlev, N. I., Zorin, A. G., Branford, D., Foehl, K., Glazier, D., Watts, D., Woods, P., Eyrich, W., Lehmann, A., Teufel, A., Dobbs, S., Metreveli, Z., Seth, K., Tann, B., Tomaradze, A., Bettoni, D., Carassiti, V., Cecchi, A., Dalpiaz, P., Fioravanti, E., Garzia, I., Negrini, M., Savri`e, M., Stancari, G., Dulach, B., Gianotti, P., Guaraldo, C., Lucherini, V., Pace, E., Bersani, A., Macri, M., Marinelli, M., Parodi, R. F., Brodski, I., Doering, W., Drexler, P., Dueren, M., Gagyi-Palffy, Z., Hayrapetyan, A., Kotulla, M., Kuehn, W., Lange, S., Liu, M., Metag, V., Nanova, M., Novotny, R., Salz, C., Schneider, J., Schoenmeier, P., Schubert, R., Spataro, S., Stenzel, H., Strackbein, C., Thiel, M., Thoering, U., Yang, S., Clarkson, T., Cowie, E., Downie, E., Hill, G., Hoek, M., Ireland, D., Kaiser, R., Keri, T., Lehmann, I., Livingston, K., Lumsden, S., MacGregor, D., McKinnon, B., Murray, M., Protopopescu, D., Rosner, G., Seitz, B., Yang, G., Babai, M., Biegun, A. K., Bubak, A., Guliyev, E., Jothi, V. S., Kavatsyuk, M., Loehner, H., Messchendorp, J., Smit, H., van der Weele, J. C., Garcia, F., Riska, D. -O., Buescher, M., Dosdall, R., Dzhygadlo, R., Gillitzer, A., Grunwald, D., Jha, V., Kemmerling, G., Kleines, H., Lehrach, A., Maier, R., Mertens, M., Ohm, H., Prasuhn, D., Randriamalala, T., Ritman, J., Roeder, M., Stockmanns, T., Wintz, P., Wuestner, P., Kisiel, J., Li, S., Li, Z., Sun, Z., Fissum, S., Hansen, K., Isaksson, L., Lundin, M., Schroeder, B., Achenbach, P., Espi, M. C. Mora, Pochodzalla, J., Sanchez, S., Sanchez-Lorente, A., Dormenev, V. I., Fedorov, A. A., Korzhik, M. V., Missevitch, O. V., Balanutsa, V., Chernetsky, V., Demekhin, A., Dolgolenko, A., Fedorets, P., Gerasimov, A., Goryachev, V., Boukharov, A., Malyshev, O., Marishev, I., Semenov, A., Hoeppner, C., Ketzer, B., Konorov, I., Mann, A., Neubert, S., Paul, S., Weitzel, Q., Khoukaz, A., Rausmann, T., Taeschner, A., Wessels, J., Varma, R., Baldin, E., Kotov, K., Peleganchuk, S., Tikhonov, Yu., Boucher, J., Hennino, T., Kunne, R., Ong, S., Pouthas, J., Ramstein, B., Rosier, P., Sudol, M., Van de Wiele, J., Zerguerras, T., Dmowski, K., Korzeniewski, R., Przemyslaw, D., Slowinski, B., Boca, G., Braghieri, A., Costanza, S., Fontana, A., Genova, P., Lavezzi, L., Montagna, P., Rotondi, A., Belikov, N. I., Davidenko, A. M., Derevschikov, A. A., Goncharenko, Y. M., Grishin, V. N., Kachanov, V. A., Konstantinov, D. A., Kormilitsin, V. A., Kravtsov, V. I., Matulenko, Y. A., Melnik, Y. M., Meschanin, A. P., Minaev, N. G., Mochalov, V. V., Morozov, D. A., Nogach, L. V., Nurushev, S. B., Ryazantsev, A. V., Semenov, P. A., Soloviev, L. F., Uzunian, A. V., Vasiliev, A. N., Yakutin, A. E., Baeck, T., Cederwall, B., Bargholtz, C., Geren, L., Tegner, P. E., Belostotski, S., Gavrilov, G., Itzotov, A., Kisselev, A., Kravchenko, P., Manaenkov, S., Miklukho, O., Naryshkin, Y., Veretennikov, D., Vikhrov, V., Zhadanov, A., Fava, L., Panzieri, D., Alberto, D., Amoroso, A., Botta, E., Bressani, T., Bufalino, S., Bussa, M. P., Busso, L., De Mori, F., Destefanis, M., Ferrero, L., Grasso, A., Greco, M., Kugathasan, T., Maggiora, M., Marcello, S., Serbanut, G., Sosio, S., Bertini, R., Calvo, D., Coli, S., De Remigis, P., Feliciello, A., Filippi, A., Giraudo, G., Mazza, G., Rivetti, A., Szymanska, K., Tosello, F., Wheadon, R., Morra, O., Agnello, M., Iazzi, F., Birsa, R., Bradamante, F., Bressan, A., Martin, A., Clement, H., Ekstroem, C., Calen, H., Grape, S., Hoeistad, B., Johansson, T., Kupsc, A., Marciniewski, P., Thome, E., Zlomanczuk, J., Diaz, J., Ortiz, A., Borsuk, S., Chlopik, A., Guzik, Z., Kopec, J., Kozlowski, T., Melnychuk, D., Plominski, M., Szewinski, J., Traczyk, K., Zwieglinski, B., Buehler, P., Gruber, A., Kienle, P., Marton, J., Widmann, E., and Zmeskal, J.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

This document presents the technical layout and the envisaged performance of the Electromagnetic Calorimeter (EMC) for the PANDA target spectrometer. The EMC has been designed to meet the physics goals of the PANDA experiment, which is being developed for the Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. The performance figures are based on extensive prototype tests and radiation hardness studies. The document shows that the EMC is ready for construction up to the front-end electronics interface., Comment: 199 pages, submitted to FAIR STI on July 1st 2008, Editors: Fritz-Herbert Heinsius, Bertram Kopf, Bernd Lewandowski (Deputy Technical Coordinator), Herbert L\"ohner, Rainer Novotny (Project Coordinator), Klaus Peters, Philippe Rosier, Lars Schmitt (Technical Coordinator), Alexander Vasiliev; Spokespersons: Ulrich Wiedner, Paola Gianotti (deputy)

Published
2008

43. Study of the hadronic production of kaon pairs below the threshold for the phi meson

Author

Moskal, P., Silarski, M., Budzanowski, A., Czerwinski, E., Czyzykiewicz, R., Gil, D., Grzonka, D., Janusz, M., Jarczyk, L., Kamys, B., Khoukaz, A., Klaja, P., Oelert, W., Piskor-Ignatowicz, C., Przerwa, J., Rejdych, B., Ritman, J., Sefzick, T., Siemaszko, M., Smyrski, J., Taschner, A., Winter, P., Wolke, M., Wustner, P., Zielinski, M. J., Zipper, W., and Zdebik, J.

Subjects
Nuclear Experiment
Abstract

The near threshold production of K+K- pairs in proton-proton collisions has been investigated at the cooler synchrotron COSY below and above the threshold for the $\phi$ meson using the COSY-11 and ANKE facilities, respectively. The excitation function determined for the pp-->ppK+K- reaction revealed a statistically significant enhancement close to the threshold which may plausibly be assigned to the influence of the K-p interaction. In addition, observed consistently by both groups, a strong enhancement at low values of the ratio of the K-p to K+p invariant mass distributions shows that the proton interacts much stronger with K- than with K+. In this report we focus on the measurements performed by the COSY-11 collaboration. We explain the experimental method used and present main results of completed analyses as well as a new qualitative elaboration of the ppK+K- events population on the Goldhaber plot. We conclude with the observation that event densities increase at the region where the influence from the K+K- interaction is expected., Comment: 5 pages, 5 figures, Talk given at International Workshop on e+ e- Collisions from Phi to Psi (PHIPSI08), Frascati, Italy, 7-10 Apr 2008

Published
2008
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44. Near threshold production of the eta meson via the quasi-free pn --> pn eta reaction

Author

Moskal, P., Czyzykiewicz, R., Adam, H. -H., Bass, S. D., Budzanowski, A., Czerwinski, E., Gil, D., Grzonka, D., Janusz, M., Jarczyk, L., Johansson, T., Kamys, B., Khoukaz, A., Kilian, K., Klaja, P., Majewski, J., Oelert, W., Piskor-Ignatowicz, C., Przerwa, J., Rejdych, B., Ritman, J., Rozek, T., Sefzick, T., Siemaszko, M., Silarski, M., Smyrski, J., Taeschner, A., Wolke, M., Wuestner, P., Zielinski, M. J., Zipper, W., and Zdebik, J.

Subjects
High Energy Physics - Experiment
Abstract

Total cross sections for the quasi-free pn --> pn eta reaction in the range from the kinematical threshold up to 20 MeV excess energy have been determined. At threshold they exceed corresponding cross sections for the pp --> pp eta reaction by a factor of about three in contrast to the factor of six established for higher excess energies. To large extent, the observed decrease of the ratio sigma(pn --> pn eta)/sigma(pp --> pp eta) towards threshold may be assigned to the different energy dependence of the proton-proton and proton-neutron final state interactions. The experiment has been conducted using a proton beam of the cooler synchrotron COSY and a cluster jet deuteron target. The proton-neutron reactions were tagged by the spectator proton whose momentum was measured for each event. Protons and neutron outgoing from the pn --> pn eta reaction have been registered by means of the COSY-11 facility, an apparatus dedicated for threshold meson production., Comment: 15 pages, 6 figures, submitted to Phys. Rev. C

Published
2008
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45. Competition of coalescence and 'fireball' processes in nonequilibrium emission of light charged particles from p+Au collisions

Author

Budzanowski, A., Fidelus, M., Filges, D., Goldenbaum, F., Hodde, H., Jarczyk, L., Kamys, B., Kistryn, M., Kistryn, St., Kliczewski, St., Kowalczyk, A., Kozik, E., Kulessa, P., Machner, H., Magiera, A., Piskor-Ignatowicz, B., Pysz, K., Rudy, Z., Siudak, R., and Wojciechowski, M.

Subjects
Nuclear Experiment
Abstract

The energy and angular dependence of double differential cross sections was measured for p,d,t,He,Li,Be, and B isotopes produced in collisions of 1.2 and 1.9 GeV protons with Au target. The shape of the spectra and angular distributions almost does not change in the beam energy range from 1.2 to 2.5 GeV, however, the absolute value of the cross sections increases for all ejectiles. A phenomenological model of two emitting, moving sources reproduces very well spectra and angular distributions of intermediate mass fragments. Double differential cross sections for light charged particles (LCP) were analyzed in the frame of the microscopic model of intranuclear cascade (INC) with coalescence of nucleons and statistical model for evaporation of particles from excited residual nuclei. Energy and angular dependencies of data agree satisfactorily neither with predictions of microscopic intranuclear cascade calculations for protons, nor with coalescence calculations for other LCP. Phenomenological inclusion of another reaction mechanism - emission of LCP from a "fireball", i.e., fast and hot moving source - combined with the microscopic model calculations of INC, coalescence and evaporation of particles leads to very good description of the data. It was found that nonequilibrium processes are very important for production of LCP. They exhaust 40-80% of the total cross sections - depending on the emitted particles. Coalescence and "fireball" emission give comparable contributions to the cross sections with exception of 3He data where coalescence clearly dominates. The ratio of sum of all nonequilibrium processes to those proceeding through stage of statistical equilibrium does almost not change in the beam energy range from 1.2 GeV to 2.5 GeV for all light charged particles., Comment: 14 pages, 12 figures, IV tables, \pacs{25.40.-h,25.40.Sc,25.40.Ve}

Published
2008
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46. Critical temperature for the nuclear liquid-gas phase transition (from multifragmentation and fission)

Author

Karnaukhov, V. A., Oeschler, H., Budzanowski, A., Avdeyev, S. P., Botvina, A. S., Cherepanov, E. A., Karcz, W., Kirakosyan, V. V., Rukoyatkin, P. A., Skwirczynska, I., and Norbeck, E.

Subjects
Nuclear Experiment
Abstract

Critical temperature Tc for the nuclear liquid-gas phase transition is stimated both from the multifragmentation and fission data. In the first case,the critical temperature is obtained by analysis of the IMF yields in p(8.1 GeV)+Au collisions within the statistical model of multifragmentation (SMM). In the second case, the experimental fission probability for excited 188Os is compared with the calculated one with Tc as a free parameter. It is concluded for both cases that the critical temperature is higher than 16 MeV., Comment: 15 pages, 8 figures

Published
2008
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47. Dynamics of the near threshold eta meson production in proton-proton interaction

Author

Czyzykiewicz, R., Moskal, P., Adam, H. -H., Budzanowski, A., Czerwinski, E., Gil, D., Grzonka, D., Hodana, M., Janusz, M., Jarczyk, L., Kamys, B., Khoukaz, A., Kilian, K., Klaja, P., Lorentz, B., Oelert, W., Piskor-Ignatowicz, C., Przerwa, J., Rejdych, B., Ritman, J., Sefzick, T., Siemaszko, M., Silarski, M., Smyrski, J., Taschner, A., Ulbrich, K., Winter, P., Wolke, M., Wustner, P., Zielinski, M. J., and Zipper, W.

Subjects
Nuclear Experiment
Abstract

We present the results of measurements of the analysing power for the p(pol)p --> pp eta reaction at the excess energies of Q=10 and 36 MeV, and interpret these results within the framework of the meson exchange models. The determined values of the analysing power at both excess energies are consistent with zero implying that the eta meson is produced predominantly in s-wave., Comment: 3 pages, 3 figures, Presented at the Workshop on the physics of excited nucleons (NSTAR 2007), 5-8 September 2007, Bonn, Germany

Published
2007
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48. Near threshold production of the pseudoscalar mesons at the COSY-11 facility

Author

Moskal, P., Czyzykiewicz, R., Adam, H. -H., Budzanowski, A., Czerwinski, E., Gil, D., Grzonka, D., Janusz, M., Jarczyk, L., Kamys, B., Khoukaz, A., Kilian, K., Klaja, P., Oelert, W., Piskor-Ignatowicz, C., Przerwa, J., Rejdych, B., Ritman, J., Sefzick, T., Siemaszko, M., Silarski, M., Smyrski, J., Taschner, A., Wolke, M., Winter, P., Wustner, P., Zielinski, M. J., and Zipper, W.

Subjects
Nuclear Experiment
Abstract

We summarise measurements of the COSY-11 collaboration concerning the excitation functions of the near threshold pseudoscalar meson production in the proton-proton interaction. The results are discussed in the context of the meson-nucleon and hyperon-nucleon interactions. We conclude that the $\eta$-proton interaction is significantly stronger than the eta'-proton interaction. Similarly, we found that the hyperon Lambda interacts with the nucleon considerably stronger than the hyperon Sigma, and that the interaction of (K-)-proton is much stronger than this of the (K+)-proton., Comment: 3 pages, 3 figures, Presented at the Workshop on the physics of excited nucleons (NSTAR 2007), 5-8 September 2007, Bonn, Germany

Published
2007
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49. Non-equilibrium emission of complex fragments from p+Au collisions at 2.5 GeV proton beam energy

Author

Budzanowski, A., Filges, D., Goldenbaum, F., Heczko, A., Hodde, H., Jarczyk, L., Kamys, B., Kistryn, M., Kistryn, St., Kliczewski, St., Kowalczyk, A., Smoluchowski, M., Kozik, E., Kulessa, P., Machner, H., Magiera, A., Migdal, W., Paul, N., Piskor-Ignatowicz, B., Puchala, M., Pysz, K., Rudy, Z., Siudak, R., and Wojciechowski, M.

Subjects
Nuclear Experiment
Abstract

Energy and angular dependence of double differential cross sections d$^2\sigma$/d$\Omega$dE was measured for reactions induced by 2.5 GeV protons on Au target with isotopic identification of light products (H, He, Li, Be, and B) and with elemental identification of heavier intermediate mass fragments (C, N, O, F, Ne, Na, Mg, and Al). It was found that two different reaction mechanisms give comparable contributions to the cross sections. The intranuclear cascade of nucleon-nucleon collisions followed by evaporation from an equilibrated residuum describes low energy part of the energy distributions whereas another reaction mechanism is responsible for high energy part of the spectra of composite particles. Phenomenological model description of the differential cross sections by isotropic emission from two moving sources led to a very good description of all measured data. Values of the extracted parameters of the emitting sources are compatible with the hypothesis claiming that the high energy particles emerge from pre-equilibrium processes consisting in a breakup of the target into three groups of nucleons; small, fast and hot fireball of $\sim$ 8 nucleons, and two larger, excited prefragments, which emits the light charged particles and intermediate mass fragments. The smaller of them contains $\sim$ 20 nucleons and moves with velocity larger than the CM velocity of the proton projectile and the target. The heavier prefragment behaves similarly as the heavy residuum of the intranuclear cascade of nucleon-nucleon collisions. %The mass and charge dependence of the total production cross %sections was extracted from the above analysis for all observed %reaction products. This dependence follows the power low behavior %(A$^{-\tau}$ or Z$^{-\tau}$).

Published
2007
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50. Measurement of the dp -->3He eta reaction near threshold

Author

Smyrski, J., Adam, H. -H., Budzanowski, A., Czerwinski, E., Czyzykiewicz, R., Gil, D., Grzonka, D., Janusz, M., Jarczyk, L., Kamys, B., Khoukaz, A., Klaja, P., Mersmann, T., Moskal, P., Oelert, W., Piskor-Ignatowicz, C., Przerwa, J., Rejdych, B., Ritman, J., Rozek, T., Sefzick, T., Siemaszko, M., Taeschner, A., Winter, P., Wolke, M., Wuestner, P., and Zipper, W.

Subjects
Nuclear Experiment
Abstract

Total and differential cross sections for the dp --> 3He eta reaction have been measured near threshold for 3He center-of-mass momenta in the range from 17.1 MeV/c to 87.5 MeV/c. The data were taken during a slow ramping of the COSY internal deuteron beam scattered on a proton target detecting the 3He ejectiles with the COSY-11 facility. The forward-backward asymmetries of the differential cross sections deviate clearly from zero for center-of-mass momenta above 50 MeV/c indicating the presence of higher partial waves in the final state. Below 50 MeV/c center-of-mass momenta a fit of the final state enhancement factor to the data of the total cross sections results in the 3He eta scattering length of a = |2.9 +/- 0.6| + i (3.2 +/- 0.4) fm.

Published
2007
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