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1. Challenges in QCD matter physics - The Compressed Baryonic Matter experiment at FAIR

Author: CBM Collaboration, Ablyazimov, T., Abuhoza, A., Adak, R. P., Adamczyk, M., Agarwal, K., Aggarwal, M. M., Ahammed, Z., Ahmad, F., Ahmad, N., Ahmad, S., Akindinov, A., Akishin, P., Akishina, E., Akishina, T., Akishina, V., Akram, A., Al-Turany, M., Alekseev, I., Alexandrov, E., Alexandrov, I., Amar-Youcef, S., Anđelić, M., Andreeva, O., Andrei, C., Andronic, A., Anisimov, Yu., Appelshäuser, H., Argintaru, D., Atkin, E., Avdeev, S., Averbeck, R., Azmi, M. D., Baban, V., Bach, M., Badura, E., Bähr, S., Balog, T., Balzer, M., Bao, E., Baranova, N., Barczyk, T., Bartoş, D., Bashir, S., Baszczyk, M., Batenkov, O., Baublis, V., Baznat, M., Becker, J., Becker, K. -H., Belogurov, S., Belyakov, D., Bendarouach, J., Berceanu, I., Bercuci, A., Berdnikov, A., Berdnikov, Y., Berendes, R., Berezin, G., Bergmann, C., Bertini, D., Bertini, O., Beşliu, C., Bezshyyko, O., Bhaduri, P. P., Bhasin, A., Bhati, A. K., Bhattacharjee, B., Bhattacharyya, A., Bhattacharyya, T. K., Biswas, S., Blank, T., Blau, D., Blinov, V., Blume, C., Bocharov, Yu., Book, J., Breitner, T., Brüning, U., Brzychczyk, J., Bubak, A., Büsching, H., Bus, T., Butuzov, V., Bychkov, A., Byszuk, A., Cai, Xu, Cálin, M., Cao, Ping, Caragheorgheopol, G., Carević, I., Cătănescu, V., Chakrabarti, A., Chattopadhyay, S., Chaus, A., Chen, Hongfang, Chen, LuYao, Cheng, Jianping, Chepurnov, V., Cherif, H., Chernogorov, A., Ciobanu, M. I., Claus, G., Constantin, F., Csanád, M., D'Ascenzo, N., Das, Supriya, Das, Susovan, de Cuveland, J., Debnath, B., Dementiev, D., Deng, Wendi, Deng, Zhi, Deppe, H., Deppner, I., Derenovskaya, O., Deveaux, C. A., Deveaux, M., Dey, K., Dey, M., Dillenseger, P., Dobyrn, V., Doering, D., Dong, Sheng, Dorokhov, A., Dreschmann, M., Drozd, A., Dubey, A. K., Dubnichka, S., Dubnichkova, Z., Dürr, M., Dutka, L., Dželalija, M., Elsha, V. V., Emschermann, D., Engel, H., Eremin, V., Eşanu, T., Eschke, J., Eschweiler, D., Fan, Huanhuan, Fan, Xingming, Farooq, M., Fateev, O., Feng, Shengqin, Figuli, S. P. D., Filozova, I., Finogeev, D., Fischer, P., Flemming, H., Förtsch, J., Frankenfeld, U., Friese, V., Friske, E., Fröhlich, I., Frühauf, J., Gajda, J., Galatyuk, T., Gangopadhyay, G., Chávez, C. García, Gebelein, J., Ghosh, P., Ghosh, S. K., Gläßel, S., Goffe, M., Golinka-Bezshyyko, L., Golovatyuk, V., Golovnya, S., Golovtsov, V., Golubeva, M., Golubkov, D., Ramírez, A. Gómez, Gorbunov, S., Gorokhov, S., Gottschalk, D., Gryboś, P., Grzeszczuk, A., Guber, F., Gudima, K., Gumiński, M., Gupta, A., Gusakov, Yu., Han, Dong, Hartmann, H., He, Shue, Hehner, J., Heine, N., Herghelegiu, A., Herrmann, N., Heß, B., Heuser, J. M., Himmi, A., Höhne, C., Holzmann, R., Hu, Dongdong, Huang, Guangming, Huang, Xinjie, Hutter, D., Ierusalimov, A., Ilgenfritz, E. -M., Irfan, M., Ivanischev, D., Ivanov, M., Ivanov, P., Ivanov, Valery, Ivanov, Victor, Ivanov, Vladimir, Ivashkin, A., Jaaskelainen, K., Jahan, H., Jain, V., Jakovlev, V., Janson, T., Jiang, Di, Jipa, A., Kadenko, I., Kähler, P., Kämpfer, B., Kalinin, V., Kallunkathariyil, J., Kampert, K. -H., Kaptur, E., Karabowicz, R., Karavichev, O., Karavicheva, T., Karmanov, D., Karnaukhov, V., Karpechev, E., Kasiński, K., Kasprowicz, G., Kaur, M., Kazantsev, A., Kebschull, U., Kekelidze, G., Khan, M. M., Khan, S. A., Khanzadeev, A., Khasanov, F., Khvorostukhin, A., Kirakosyan, V., Kirejczyk, M., Kiryakov, A., Kiš, M., Kisel, I., Kisel, P., Kiselev, S., Kiss, T., Klaus, P., Kłeczek, R., Klein-Bösing, Ch., Kleipa, V., Klochkov, V., Kmon, P., Koch, K., Kochenda, L., Koczoń, P., Koenig, W., Kohn, M., Kolb, B. W., Kolosova, A., Komkov, B., Korolev, M., Korolko, I., Kotte, R., Kovalchuk, A., Kowalski, S., Koziel, M., Kozlov, G., Kozlov, V., Kramarenko, V., Kravtsov, P., Krebs, E., Kreidl, C., Kres, I., Kresan, D., Kretschmar, G., Krieger, M., Kryanev, A. V., Kryshen, E., Kuc, M., Kucewicz, W., Kucher, V., Kudin, L., Kugler, A., Kumar, Ajit, Kumar, Ashwini, Kumar, L., Kunkel, J., Kurepin, A., Kurepin, N., Kurilkin, A., Kurilkin, P., Kushpil, V., Kuznetsov, S., Kyva, V., Ladygin, V., Lara, C., Larionov, P., García, A. Laso, Lavrik, E., Lazanu, I., Lebedev, A., Lebedev, S., Lebedeva, E., Lehnert, J., Lehrbach, J., Leifels, Y., Lemke, F., Li, Cheng, Li, Qiyan, Li, Xin, Li, Yuanjing, Lindenstruth, V., Linnik, B., Liu, Feng, Lobanov, I., Lobanova, E., Löchner, S., Loizeau, P. -A., Lone, S. A., Martínez, J. A. Lucio, Luo, Xiaofeng, Lymanets, A., Lyu, Pengfei, Maevskaya, A., Mahajan, S., Mahapatra, D. P., Mahmoud, T., Maj, P., Majka, Z., Malakhov, A., Malankin, E., Malkevich, D., Malyatina, O., Malygina, H., Mandal, M. M., Mandal, S., Manko, V., Manz, S., Garcia, A. M. Marin, Markert, J., Masciocchi, S., Matulewicz, T., Meder, L., Merkin, M., Mialkovski, V., Michel, J., Miftakhov, N., Mik, L., Mikhailov, K., Mikhaylov, V., Milanović, B., Militsija, V., Miskowiec, D., Momot, I., Morhardt, T., Morozov, S., Müller, W. F. J., Müntz, C., Mukherjee, S., Castillo, C. E. Muńoz, Murin, Yu., Najman, R., Nandi, C., Nandy, E., Naumann, L., Nayak, T., Nedosekin, A., Negi, V. S., Niebur, W., Nikulin, V., Normanov, D., Oancea, A., Oh, Kunsu, Onishchuk, Yu., Ososkov, G., Otfinowski, P., Ovcharenko, E., Pal, S., Panasenko, I., Panda, N. R., Parzhitskiy, S., Patel, V., Pauly, C., Penschuck, M., Peshekhonov, D., Peshekhonov, V., Petráček, V., Petri, M., Petriş, M., Petrovici, A., Petrovici, M., Petrovskiy, A., Petukhov, O., Pfeifer, D., Piasecki, K., Pieper, J., Pietraszko, J., Płaneta, R., Plotnikov, V., Plujko, V., Pluta, J., Pop, A., Pospisil, V., Poźniak, K., Prakash, A., Prasad, S. K., Prokudin, M., Pshenichnov, I., Pugach, M., Pugatch, V., Querchfeld, S., Rabtsun, S., Radulescu, L., Raha, S., Rami, F., Raniwala, R., Raniwala, S., Raportirenko, A., Rautenberg, J., Rauza, J., Ray, R., Razin, S., Reichelt, P., Reinecke, S., Reinefeld, A., Reshetin, A., Ristea, C., Ristea, O., Rodriguez, A. Rodriguez, Roether, F., Romaniuk, R., Rost, A., Rostchin, E., Rostovtseva, I., Roy, Amitava, Roy, Ankhi, Rożynek, J., Ryabov, Yu., Sadovsky, A., Sahoo, R., Sahu, P. K., Sahu, S. K., Saini, J., Samanta, S., Sambyal, S. S., Samsonov, V., Rosado, J. Sánchez, Sander, O., Sarangi, S., Satława, T., Sau, S., Saveliev, V., Schatral, S., Schiaua, C., Schintke, F., Schmidt, C. J., Schmidt, H. R., Schmidt, K., Scholten, J., Schweda, K., Seck, F., Seddiki, S., Selyuzhenkov, I., Semennikov, A., Senger, A., Senger, P., Shabanov, A., Shabunov, A., Shao, Ming, Sheremetiev, A. D., Shi, Shusu, Shumeiko, N., Shumikhin, V., Sibiryak, I., Sikora, B., Simakov, A., Simon, C., Simons, C., Singaraju, R. N., Singh, A. K., Singh, B. K., Singh, C. P., Singhal, V., Singla, M., Sitzmann, P., Siwek-Wilczyńska, K., Škoda, L., Skwira-Chalot, I., Som, I., Song, Guofeng, Song, Jihye, Sosin, Z., Soyk, D., Staszel, P., Strikhanov, M., Strohauer, S., Stroth, J., Sturm, C., Sultanov, R., Sun, Yongjie, Svirida, D., Svoboda, O., Szabó, A., Szczygieł, R., Talukdar, R., Tang, Zebo, Tanha, M., Tarasiuk, J., Tarassenkova, O., Târzilă, M. -G., Teklishyn, M., Tischler, T., Tlustý, P., Tölyhi, T., Toia, A., Topil'skaya, N., Träger, M., Tripathy, S., Tsakov, I., Tsyupa, Yu., Turowiecki, A., Tuturas, N. G., Uhlig, F., Usenko, E., Valin, I., Varga, D., Vassiliev, I., Vasylyev, O., Verbitskaya, E., Verhoeven, W., Veshikov, A., Visinka, R., Viyogi, Y. P., Volkov, S., Volochniuk, A., Vorobiev, A., Voronin, Aleksey, Voronin, Alexander, Vovchenko, V., Vznuzdaev, M., Wang, Dong, Wang, Xi-Wei, Wang, Yaping, Wang, Yi, Weber, M., Wendisch, C., Wessels, J. P., Wiebusch, M., Wiechula, J., Wielanek, D., Wieloch, A., Wilms, A., Winckler, N., Winter, M., Wiśniewski, K., Wolf, Gy., Won, Sanguk, Wu, Ke-Jun, Wüstenfeld, J., Xiang, Changzhou, Xu, Nu, Yang, Junfeng, Yang, Rongxing, Yin, Zhongbao, Yoo, In-Kwon, Yuldashev, B., Yushmanov, I., Zabołotny, W., Zaitsev, Yu., Zamiatin, N. I., Zanevsky, Yu., Zhalov, M., Zhang, Yifei, Zhang, Yu, Zhao, Lei, Zheng, Jiajun, Zheng, Sheng, Zhou, Daicui, Zhou, Jing, Zhu, Xianglei, Zinchenko, A., Zipper, W., Żoładź, M., Zrelov, P., Zryuev, V., Zumbruch, P., and Zyzak, M.
Subjects: Nuclear Experiment
Abstract: Substantial experimental and theoretical efforts worldwide are devoted to explore the phase diagram of strongly interacting matter. At LHC and top RHIC energies, QCD matter is studied at very high temperatures and nearly vanishing net-baryon densities. There is evidence that a Quark-Gluon-Plasma (QGP) was created at experiments at RHIC and LHC. The transition from the QGP back to the hadron gas is found to be a smooth cross over. For larger net-baryon densities and lower temperatures, it is expected that the QCD phase diagram exhibits a rich structure, such as a first-order phase transition between hadronic and partonic matter which terminates in a critical point, or exotic phases like quarkyonic matter. The discovery of these landmarks would be a breakthrough in our understanding of the strong interaction and is therefore in the focus of various high-energy heavy-ion research programs. The Compressed Baryonic Matter (CBM) experiment at FAIR will play a unique role in the exploration of the QCD phase diagram in the region of high net-baryon densities, because it is designed to run at unprecedented interaction rates. High-rate operation is the key prerequisite for high-precision measurements of multi-differential observables and of rare diagnostic probes which are sensitive to the dense phase of the nuclear fireball. The goal of the CBM experiment at SIS100 (sqrt(s_NN) = 2.7 - 4.9 GeV) is to discover fundamental properties of QCD matter: the phase structure at large baryon-chemical potentials (mu_B > 500 MeV), effects of chiral symmetry, and the equation-of-state at high density as it is expected to occur in the core of neutron stars. In this article, we review the motivation for and the physics programme of CBM, including activities before the start of data taking in 2022, in the context of the worldwide efforts to explore high-density QCD matter., Comment: 15 pages, 11 figures. Published in European Physical Journal A
Published: 2016
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2. Production of eta and 3pi mesons in the pd->3HeX reaction at 1360 and 1450 MeV

Author: Schoenning, K., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., Clement, H., Demiroers, L., Ekstroem, C., Fransson, K., Geren, L., Gustafsson, L., Hoeistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Keleta, S., Khakimova, O., Kren, F., Kullander, S., Kupsc, A., Kuzmin, A., Lindberg, K., Marciniewski, P., Morosov, B., Oelert, W., Pauly, C., Petren, H., Petukhov, Y., Povtorejko, A., Scobel, W., Shafigullin, R., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., tegner, P. -E., Engblom, P. Thoerngren, Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wolke, M., Zabierowski, J., Zartova, I., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: The cross sections of the pd -> 3He eta, pd -> 3He pi0 pi0 pi0 and pd -> 3He pi+ pi- pi0 reactions have been measured at beam kinetic energies T_p= 1360 MeV and T_p= 1450 MeV using the CELSIUS/WASA detector setup. At both energies, the differential cross section dsigma/dOmega of the eta meson in the pd -> 3He eta reaction shows a strong forward-backward asymmetry in the CMS. The ratio between the pd -> 3He pi+ pi- pi0 and the pd -> 3He pi0 pi0 pi0 cross sections has been analysed in terms of isospin amplitudes. The reconstructed invariant mass distributions of the pi-pi, 3He-pi and 3He-2pi systems provide hints on the role of nucleon resonances in the 3pi production process., Comment: Shorter version accepted to EPJA 10 pages 14 figures
Published: 2010
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3. The pd --> ^3He eta pi0 reaction at T_p = 1450 MeV

Author: Schoenning, K., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., Clement, H., Demiroers, L., Ekstroem, C., Fransson, K., Geren, L., Gustafsson, L., Hoeistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Keleta, S., Khakimova, O., Kren, F., Kullander, S., Kupsc, A., Kuzmin, A., Lindberg, K., Marciniewski, P., Morosov, B., Oelert, W., Pauly, C., Petren, H., Petukhov, Y., Povtorejko, A., Scobel, W., Shafigullin, R., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., Tegner, P. -E., Thoerngren-Engblom, P., Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wilkin, C., Wolke, M., Zabierowski, J., Zartova, I., and Zlomanczuk, Jozef
Subjects: Nuclear Experiment
Abstract: The cross section for the pd --> ^3He eta pi0 reaction has been measured at a beam energy of 1450 MeV using the WASA detector at the CELSIUS storage ring and detecting one ^3He and four photons from the decays of the two photons. The data indicate that the production mechanism involves the formation of the Delta(1232) isobar. Although the beam energy does not allow the full peak of this resonance to be seen, the invariant masses of all three pairs of final state particles are well reproduced by a phase space Monte Carlo simulation weighted with the p-wave factor of the square of the pi^0 momentum in the ^3Hepi^0 system., Comment: 10 pages, 5 figures
Published: 2009
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4. Exclusive measurement of two-pion production in the dd --> 4Hepipi reaction

Author: Keleta, S., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., Clement, H., Demirors, L., Ekstrom, C., Fransson, K., Geren, L., Gustafsson, L., Hoistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Khakimova, O., Kren, F., Kullander, S., Kupsc, A., Kuzmin, A., Lindberg, K., Marciniewski, P., Morosov, B., Oelert, W., Pauly, C., Petren, H., Petukhov, Y., Povtorejko, A., Pricking, A., Ruber, R. J. M. Y., Schonning, K., Scobel, W., Shafigullin, R., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., Tegner, P. -E., Engblom, P. Thorngren, Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wilkin, C., Wolke, M., Zabierowski, J., Zartova, I., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: The results from the first kinematically complete measurement of the dd --> 4Hepipi reaction are reported. The aim was to investigate a long standing puzzle regarding the origin of the peculiar pipi-invariant mass distributions appearing in double pion production in light ion collisions, the so-called ABC effect. The measurements were performed at the incident deuteron energies of 712 MeV and 1029 MeV, with the WASA detector assembly at CELSIUS in Uppsala, Sweden. We report the observation of a characteristic enhancement at low pipi-invariant mass at 712 MeV, the lowest energy yet. At the higher energy, in addition to confirming previous experimental observations, our results reveal a strong angular dependence of the pions in the overall centre of mass system. The results are qualitatively reproduced by a theoretical model, according to which the ABC effect is described as resulting from a kinematical enhancement in the production of the pion pairs from two parallel and independent NN--> dpi sub-processes., Comment: 20 pages including 18 figures
Published: 2009
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5. Production of the omega meson in the pd --> 3He omega reaction at 1450 MeV and 1360 MeV

Author: Schonning, K., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., Clement, H., Demirors, L., Ekstrom, C., Fransson, K., Geren, L., Gustafsson, L., Hoistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Keleta, S., Khakimova, O., Khemchandani, K. P., Kren, F., Kullander, S., Kupsc, A., Kuzmin, A., Lindberg, K., Marciniewski, P., Morosov, B., Oelert, W., Pauly, C., Petren, H., Petukhov, Y., Povtorejko, A., Ruber, R. J. M. Y., Scobel, W., Shafigullin, R., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., Tegner, P. -E., Engblom, P. Thorngren, Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wilkin, C., Wolke, M., Zabierowski, J., Zartova, I., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: The production of $\omega$ mesons in the $pd \to{}^3$He$ \omega$ reaction has been studied at two energies near the kinematic threshold, $T_p=1450$ MeV and $T_p=1360$ MeV. The differential cross section was measured as a function of the $\omega$ cm angle at both energies over the whole angular range. Whereas the results at 1360 MeV are consistent with isotropy, strong rises are observed near both the forward and backward directions at 1450 MeV. Calculations made using a two-step model with an intermediate pion fail to reproduce the shapes of the measured angular distributions and also underestimate the total cross sections., Comment: 10 pages, 13 figures
Published: 2009
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6. Double-Pionic Fusion of Nuclear Systems and the ABCEffect -- Aproaching a Puzzle by Exclusive and Kinematically Complete Measurements

Author: Bashkanov, M., Bargholtz, C., Berlowski, M., Bogoslawsky, D., Calen, H., Clement, H., Demiroers, L., Doroshkevich, E., Duniec, D., Ekstrom, C., Fransson, K., Geren, L., Gustafsson, L., Hoistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Khakimova, O., Keleta, S., Koch, I., Kren, F., Kullander, S., Kupsc, A., Lindberg, K., Marciniewski, P., Meier, R., Morosov, B., Pauly, C., Pettersson, H., Petukhov, Y., Povtorejko, A., Pricking, A., Ruber, R. J. M. Y., Schonning, K., Scobel, W., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., Tegner, P. -E., Thorngren-Engblom, P., Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wolke, M., Zabierowski, J., Zartova, I., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: The ABC effect - a puzzling low-mass enhancement in the $\pi\pi$ invariant mass spectrum - is well-known from inclusive measurements of two-pion production in nuclear fusion reactions. Here we report on first exclusive and kinematically complete measurements of the most basic double pionic fusion reaction $pn \to d \pi^0\pi^0$ at 1.03 and 1.35 GeV. The measurements, which have been carried out at CELSIUS-WASA, reveal the ABC effect to be a $(\pi\pi)_{I=L=0}$ channel phenomenon associated with both a resonance-like energy dependence in the integral cross section and the formation of a $\Delta\Delta$ system in the intermediate state. A corresponding simple s-channel resonance ansatz provides a surprisingly good description of the data.
Published: 2008
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7. Polarisation of the omega meson in the pd-->3He+omega reaction at 1360 and 1450 MeV

Author: Schonning, K., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calen, H., Clement, H., Demirors, L., Ekstrom, C., Fransson, K., Geren, L., Gustafsson, L., Hoistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Keleta, S., Khakimova, O., Koch, I., Kren, F., Kullander, S., Kupsc, A., Kuzmin, A., Lindberg, K., Marciniewski, P., Morosov, B., Oelert, W., Pauly, C., Pettersson, H., Petukhov, Y., Povtorejko, A., Ruber, R. J. M. Y., Scobel, W., Shafigullin, R., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., Tegner, P. -E., Engblom, P. Thorngren, Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wilkin, C., Wolke, M., Zabierowski, J., Zartova, I., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: The tensor polarisation of omega mesons produced in the pd-->3He+omega reaction has been studied at two energies near threshold. The 3He nuclei were detected in coincidence with the pi0pi+pi- or pi0gamma decay products of the omega. In contrast to the case of phi meson production, the omega mesons are found to be unpolarised. This brings into question the applicability of the Okubo-Zweig-Iizuka rule when comparing the production of vector mesons in low energy hadronic reactions., Comment: 11 pages, 4 figures
Published: 2008
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8. The WASA Detector Facility at CELSIUS

Author: Bargholtz, Chr., Bashkanov, M., Berłowski, M., Bondar, A., Bogoslawsky, D., Brodowski, W., Brudvik, J., Calén, H., Capellaro, F., Chilingarov, A., Clement, H., Comfort, J., Demirörs, L., Ekström, C., Fransson, K., Fridén, C. -J., Gerén, L., Gornov, M., Grebenev, V., Greiff, J., Gurov, Y., Gustafsson, L., Höistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, A., Johansson, T., Keleta, S., Khakimova, O., Khoukaz, A., Kilian, K., Kimura, N., Koch, I., Kolachev, G., Kren, F., Kullander, S., Kupść, A., Kuzmin, A., Kuznetsov, A., Lindberg, K., Marciniewski, P., Meier, R., Messner, O., Morosov, B., Nawrot, A., Nefkens, B. M. K., Norman, G., Oelert, W., Pauly, C., Pettersson, H., Pivovarov, A., Pätzold, J., Petukhov, Y., Povtorejko, A., Reistad, D., Ruber, R. J. M. Y., Sandukovsky, S., Schönning, K., Scobel, W., Sefzick, T., Shafigullin, R., Shwartz, B., Sidorov, V., Skorodko, T., Sopov, V., Starostin, A., Stepaniak, J., Sukhanov, A., Tchernyshev, V., Tegnér, P. -E., Engblom, P. Thörngren, Tikhomirov, V., Toki, H., Turowiecki, A., Wagner, G. J., Wiedner, U., Wilhelmi, Z., Wolke, M., Yamamoto, A., Yamaoka, H., Zabierowski, J., Zartova, I., and Złomańczuk, J.
Subjects: Nuclear Experiment
Abstract: The WASA 4pi multidetector system, aimed at investigating light meson production in light ion collisions and eta meson rare decays at the CELSIUS storage ring in Uppsala is presented. A detailed description of the design, together with the anticipated and achieved performance parameters are given., Comment: 25 pages, 20 figures
Published: 2008
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9. Measurement of eta meson decays into lepton-antilepton pairs

Author: Collaboration, CELSIUS/WASA, Berłowski, M., Bargholtz, Chr., Bashkanov, M., Bogoslawsky, D., Bondar, A., Calén, H., Cappellaro, F., Clement, H., Demirörs, L., Ekström, C., Fransson, K., Gerén, L., Gustafsson, L., Höistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Keleta, S., Koch, I., Kullander, S., Kupść, A., Kuzmin, A., Kuznetsov, A., Laukhin, I. V., Lindberg, K., Marciniewski, P., Meier, R., Morosov, B., Oelert, W., Pauly, C., Pettersson, H., Petukhov, Y., Povtorejko, A., Ruber, R. J. M. Y., Schönning, K., Scobel, W., Shafigullin, R., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., Tegnér, P. -E., Engblom, P. Thörngren, Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wolke, M., Yamamoto, A., Zabierowski, J., Zartova, I., and Złomańczuk, J.
Subjects: High Energy Physics - Experiment
Abstract: A search for rare lepton decays of the eta meson was performed using the WASA detector at CELSIUS. Two candidates for double Dalitz decay eta->e+e-e+e- events are reported with a background of 1.3+/-0.2 events. This allows to set an upper limit to the branching ratio of 9.7E-5 (90% CL). The branching ratio for the decay eta->e+e-gamma is determined to (7.8+/-0.5 stat+/-0.8 syst)E-3. An upper limit (90% CL) for the branching ratio for the eta->e+e- decay is 2.7E-5 and a limit for the sum of the eta->mu+mu-mu+mu- and eta->pi+pi-mu+mu- decays is 3.6E-4., Comment: 9 pages, 10 Postscript figures, uses revtex4.sty, revised version after referee comments; conclusions unchanged
Published: 2007
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10. Measurement of the Slope Parameter for the eta->3pi0 Decay in the pp->pp eta Reaction

Author: Bashkanov, M., Bogoslawsky, D., Calén, H., Capellaro, F., Clement, H., Demirörs, L., Ekström, C., Fransson, K., Gustafsson, L., Höistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Keleta, S., Koch, I., Kullander, S., Kupsc, A., Kuznetsov, A., Marciniewski, P., Meier, R., Morosov, B., Oelert, W., Pauly, C., Petukhov, Y., Pettersson, H., Povtorejko, A., Ruber, R. J. M. Y., Schönning, K., Scobel, W., Skorodko, T., Shwartz, B., Sopov, V., Stepaniak, J., Tchernyshev, V., Engblom, P. Thörngren, Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wiedner, U., Wolke, M., Yamamoto, A., Zabierowski, J., and Złomańczuk, J.
Subjects: Nuclear Experiment
Abstract: The CELSIUS/WASA setup is used to measure the 3pi0 decay of eta mesons produced in pp interactions with beam kinetic energies of 1.36 and 1.45 GeV. The efficiency-corrected Dalitz plot and density distributions for this decay are shown, together with a fit of the quadratic slope parameter alpha yielding alpha = -0.026 +/- 0.010(stat) +/- 0.010(syst). This value is compared to recent experimental results and theoretical predictions., Comment: 4 pages, 7 Postscript figures, uses revtex4.sty
Published: 2007
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11. Two-Pion Production in Nucleon-Nucleon Collisions and the ABC-Effect - Approaching a Puzzleby exclusive and Kinematically complete Measurements

Author: Skorodko, T., Bashkanov, M., Bargholtz, C., Bogoslawsky, D., Calen, H., Cappellaro, F., Clement, H., Demiroers, L., Doroshkevich, E., Duniec, D., Ekstrom, C., Fransson, K., Geren, L., Hoistad, L. Gustafsson. B., Ivanov, G., Jacewicz, l M., Jiganov, E., Johansson, T., Kaskulov, M., Khakimova, O., Keleta, S., Koch, I., Kren, F., Kullander, S., Kupsc, A., Kuznetsov, A., Lindberg, K., Marciniewski, P., Martemyanov, B., Meier, R., Morosov, B., Oelert, W., Pauly, C., Pettersson, H., Petukhov, Y., Povtorejko, A., Pricking, A., Ruber, R. J. M. Y., Schonning, K., Scobel, W., Shwartz, B., Sopov, V., Stepaniak, J., Tegner, P. -E., Thorngren-Engholm, P., Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wolke, M., Yamamoto, A., Zabierowski, J., Zartova, I., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: The ABC effect - a puzzling low-mass enhancement in the $\pi\pi$ invariant mass spectrum - is known from inclusive measurements of two-pion production in nuclear collisions, where it always showed up, if the participating nucleons fused to a bound nuclear system in the final state. The first exclusive measurements on the ABC effect have been carried out very recently at CELSIUS-WASA for the fusion reactions leading to d, $^3$He and $^4$He nuclei in the final state. The data analyzed so far for the fusion processes to d and $^3$He reveal this effect to be a $\sigma$ channel phenomenon associated with the formation of a strongly attractive $\Delta\Delta$ system. The data for the strictly isospin-selective double-pionic fusion to $^4$He, where we expect the largest effect, are currently still analyzed. All inclusive data on this system are well described by our model, too. This case also constitutes the heaviest nuclear system, where exclusive measurements of double-pionic fusion can be carried out with present-day instruments. Surprisingly, the $pp \to pp\pi^0\pi^0$ reaction in the $\Delta\Delta$ region is observed to also show a ABC-like low-$\pi\pi$ mass enhancement, a phenomenon, which deserves special attention.
Published: 2006

12. Evidence for a 'Narrow' Roper Resonance - the Breathing Mode of the Nucleon

Author: Clement, H., Skorodko, T., Bashkanov, M., Bogoslawsky, D., Calen, H., Cappellaro, F., Demiroers, L., Doroshkevich, E., Ekstrom, C., Fransson, K., Hoistad, L. Gustafsson. B., Ivanov, G., Jacewicz, l M., Jiganov, E., Johansson, T., Kaskulov, M., Khakimova, O., Keleta, S., Koch, I., Kren, F., Kullander, S., Kupsc, A., Kuznetsov, A., Marciniewski, P., Martemyanov, B., Meier, R., Morosov, B., Oelert, W., Pauly, C., Pettersson, H., Petukhov, Y., Povtorejko, A., Ruber, R. J. M. Y., Schonning, K., Scobel, W., Shwartz, B., Sopov, V., Stepaniak, J., Thorngren-Engholm, P., Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wolke, M., Yamamoto, A., Zabierowski, J., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: All the time since its discovery the N$^*$(1440) baryon state, commonly known as Roper resonance, has been a state with many question marks - despite of its 4-star ranking in the particle data book. One reason is that it does not produce any explicit resonance-like structures in the observables of $\pi$N or $\gamma$N reactions. Only in partial wave analyses of $\pi$N scattering data a clear resonance strcuture gets obvious in the $P_{11}$ partial wave. Very recent measurements of the J/$\Psi$ decay by the BES collaboration and of the $pp \to np\pi^+$ reaction at 1.3 GeV by the CELSIUS-WASA collaboration show for the first time a clear resonance structure in the invariant $n\pi^+$ mass spectrum for the Roper resonance at M $\approx$ 1360 MeV with a width of about 150 MeV. These values agree very favorably with the pole position results of recent $\pi$N phase shift analyses. In consequence of this very low-lying pole postion, which is roughly 100 MeV below the nominal value, the decay properties have to be reinvestigated. From our two-pion production data we see that the decay mainly proceeds via N$^* \to $N$\sigma$, i.e. a monopole transition as expected for the breathing mode of the nucleon., Comment: CRIMEA06
Published: 2006

13. Measurement of the eta->pi+pi-e+e- decay branching ratio

Author: Collaboration, CELSIUS-WASA, Bargholtz, Chr., Bashkanov, M., Bogoslawsky, D., Calén, H., Capellaro, F., Clement, H., Demirörs, L., Ekström, C., Fransson, K., Gerén, L., Gustafsson, L., Höistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Keleta, S., Koch, I., Kullander, S., Kupsc, A., Kuznetsov, A., Laukhin, I. V., Lindberg, K., Marciniewski, P., Meier, R., Morosov, B., Oelert, W., Pauly, C., Pettersson, H., Petukhov, Y., Povtorejko, A., Ruber, R. J. M. Y., Schönning, K., Scobel, W., Shafigullin, R., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., Tchernyshev, V., Tegnér, P. -E., Engblom, P. Thörngren, Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wolke, M., Yamamoto, A., Zabierowski, J., Zartova, I., and Złomańczuk, J.
Subjects: High Energy Physics - Experiment
Abstract: The reaction pd->3He eta at threshold was used to provide a clean source of eta mesons for decay studies with the WASA detector at CELSIUS. The branching ratio of the decay eta->pi+pi-e+e- is measured to be (4.3+/-1.3+/-0.4)x10^-4., Comment: 10 pages,6 figures revised version
Published: 2006
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14. The pp -> pp pi pi pi reaction channels in the threshold region

Author: Collaboration, CELSIUS-WASA, Pauly, C., Jacewicz, M., Koch, I., Bashkanov, M., Bogoslawsky, D., Calén, H., Capellaro, F., Clement, H., Demirörs, L., Ekström, C., Fransson, K., Gustafsson, L., Höistad, B., Ivanov, G., Jiganov, E., Johansson, T., Keleta, S., Kullander, S., Kupść, A., Kuznetsov, A., Marciniewski, P., Meier, R., Morosov, B., Oelert, W., Pettersson, H., Petukhov, Y., Povtorejko, A., Ruber, R. J. M. Y., Scobel, W., Schönning, K., Skorodko, T., Shwartz, B., Sopov, V., Stepaniak, J., Tchernyshev, V., Engblom, P. Thörngren, Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wiedner, U., Wolke, M., Yamamoto, A., Zabierowski, J., and Złomańczuk, J.
Subjects: Nuclear Experiment
Abstract: The cross section for prompt neutral and charged three pion production in pp interactions was measured at excess energies in the range 160 - 217 MeV. That comprises the first measurement of the pp->pp pi0pi0pi0 reaction and the comparison with the pp->pp pi+pi-pi0 reaction, in a very direct way. The experiment was performed above the eta meson production threshold and the cross section normalization was obtained from a concurrent measurement of the reaction pp->pp eta with the eta decaying into 3 pions. Since the same final states are selected, the measurement has a low systematical error. The measured cross section ratio sigma(pp->pp pi+pi-pi0)/sigma(pp->pp pi0\pi0\pi0) is compared to predictions of dominance of different isobars in the intermediate state., Comment: 12 pages, 4 figures New discussion on the pp->pp3pi reaction mechanism
Published: 2006
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15. Exclusive Measurements of $pd\to ^3He \pi\pi$ : the $ABC$ Effect Revisited

Author: Bashkanov, M., Bogoslawsky, D., Calén, H., Cappellaro, F., Clement, H., Demiroers, L., Ekström, C., Fransson, K., Greiff, J., Gustafsson, L., Höistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Kaskulov, M. M., Keleta, S., Koch, I., Kullander, S., Kupść, A., Kuznetsov, A., Marciniewski, P., Meier, R., Morosov, B., Oelert, W., Pauly, C., Petukhov, Y., Povtorejko, A., Ruber, R. J. M. Y., Scobel, W., Skorodko, T., Shwartz, B., Sopov, V., Stepaniak, J., Tchernyshev, V., Thörngren-Engblom, P., Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wolke, M., Yamamoto, A., Zabierowski, J., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: Exclusive measurements of the reactions $pd\to$ $^3He \pi^+ \pi^-$ and $pd\to$ $^3He \pi^0\pi^0$ have been carried out at $T_p=0.895$ GeV at the CELSIUS storage ring using the WASA detector. The $\pi^+\pi^-$ channel evidences a pronounced enhancement at low invariant $\pi\pi$ masses - as anticipated from previous inclusive measurements of the ABC effect. This enhancement is seen to be even much larger in the isoscalar $\pi^0\pi^0$ channel. The differential distributions prove this enhancement to be of scalar-isoscalar nature. $\Delta\Delta$ calculations give a good description of the data, if a boundstate condition is imposed for the intermediate $\Delta\Delta$ system., Comment: extended version, 8 pages, 7 figures, theoretical model calculations added
Published: 2005
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16. Study of the p p -> p p pi+ pi- Reaction in the Low-Energy Tail of the Roper Resonance

Author: Paetzold, J., Bashkanov, M., Bilger, R., Brodowski, W., Calen, H., Clement, H., Ekstrom, C., Fransson, K., Greiff, J., Haggstrom, S., Hoistad, B., Johanson, J., Johansson, A., Johansson, T., Kilian, K., Kullander, S., Kupsc, A., Marciniewski, P., Morosov, B., Oelert, W., Ruber, R. J. M. Y., Schepkin, M., Scobel, W., Stepaniak, J., Sukhanov, A., Turowiecki, A., Wagner, G. J., Wilhelmi, Z., Zabierowski, J., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: Exclusive measurements of the p p -> p p pi+ pi- reaction have been carried out at Tp = 775 MeV at CELSIUS using the PROMICE/WASA setup. Together with data obtained at lower energy they point to a dominance of the Roper excitation in this process. From the observed interference of its decay routes N* -> N sigma and N* -> Delta pi -> N sigma their energy-dependent relative branching ratio is determined.
Published: 2003
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17. Search for Narrow NNpi Resonances in Exclusive p p -> p p pi+ pi- Measurements

Author: Brodowski, W., Paetzold, J., Bilger, R., Calen, H., Clement, H., Ektrom, C., Fransson, K., Greiff, J., Haggstrom, S., Hoistad, B., Johanson, J., Johansson, A., Johannsson, T., Kilian, K., Kullander, S., Kupsc, A., Marciniewski, P., Morosov, B., Oelert, W., Ruber, R. J. M. Y., Schepkin, M., Scobel, W., Stepaniak, J., Sukhanov, A., Turowiecki, A., Wagner, G. J., Wilhelmi, Z., Zabierowski, J., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: Narrow structures in the range of a few MeV have been searched for in p p pi+ and p p pi- invariant mass spectra obtained from exclusive measurements of the p p -> p p pi+ pi- reaction at Tp = 725, 750 and 775 MeV using the PROMICE/WASA detector at CELSIUS. The selected reaction is particularily well suited for the search for NN and / or N Delta decoupled dibaryon resonances. Except for a possible fluctuation at 2087 MeV/c^2 in Mpppi- no narrow structures could be identified neither in Mpppi+ nor in Mpppi- on the 3 sigma level of statistical significance, giving an upper limit (95% C.L.) for dibaryon production in this reaction of sigma < 20 nb for 2020 MeV/c^2 < m(dibaryon) < 2085 MeV/c^2, Comment: 3 pages, 4 figures
Published: 2002
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18. Higher Partial Waves in p+p->p+p+eta near Threshold

Author: Calen, H., Dyring, J., Faldt, G., Fransson, K., Gustafsson, L., Haggstrom, S., Hoistad, B., Johanson, J., Johansson, A., Johansson, T., Kullander, S., Mortsell, A., Ruber, R., Zlomanczuk, J., Ekstrom, C., Kilian, K., Oelert, W., Sefzick, T., Bilger, R., Brodowski, W., Clement, H., Wagner, G. J., Bondar, A., Kuzmin, A., Shwartz, B., Sidorov, V., Sukhanov, A., Dunin, V., Morosov, B., Povtorejko, A., Zernov, A., Kupsc, A., Marciniewski, P., Stepaniak, J., Zabierowski, J., Turowiecki, A., Wilhelmi, Z., and Wilkin, C.
Subjects: Nuclear Experiment
Abstract: Exclusive measurements of the production of eta mesons in the p+p->p+p+eta reaction have been carried out at excess energies of 16 and 37 MeV above threshold. The deviations from phase space are dominated by the proton-proton final state interaction and this influences particularly the energy distribution of the eta meson. However, evidence is also presented at the higher energy for the existence of an anisotropy in the angular distributions of the eta meson and also of the final proton-proton pair, probably to be associated with D-waves in this system interfering with the dominant S-wave term. The sign of the eta angular anisotropy suggests that rho-exchange is important for this reaction., Comment: 16 pages, LaTeX2e, 3 EPS Figures, Updated version, Accepted for publication in Phys. Lett. B
Published: 1998
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19. Observation of strong final-state effects in pi+ production in pp collisions at 400 MeV

Author: Betsch, A., Bilger, R., Brodowski, W., Calen, H., Clement, H., Dyring, J., Ekstrom, C., Fransson, K., Gustafsson, L., Haggstrom, S., Hoistad, B., Johanson, J., Johansson, A., Johansson, T., Kilian, K., Kullander, S., Kupsc, A., Kurz, G., Marciniewski, P., Morosov, B., Mortsell, A., Oelert, W., Ruber, R. J. M. Y., Schepkin, M. G., Stepaniak, J., Sukhanov, A., Turowiecki, A., Wagner, G. J., Wilhelmi, Z., Zabierowski, J., Zernov, A., and Zlomanczuk, J.
Subjects: Nuclear Experiment
Abstract: Differential cross sections of the reactions $pp \to d\pi^+$ and $pp \to pn\pi^+$ have been measured at $T_p = 400$ MeV by detecting the charged ejectiles in the angular range $4^0 \leq \Theta_{Lab} \leq 21^\circ$. The deduced total cross sections agree well with those published previously for neighbouring energies. The invariant mass spectra are observed to be strongly affected by $\Delta$ production and $NN$ final-state interaction. The data are well described by Monte Carlo simulations including both these effects. The ratio of $pp \to pn\pi^+$ and $pp \to d\pi^+$ cross sections also compares favourably to a recent theoretical prediction which suggests a dominance of $np$-production in the relative $^3S_1$-state., Comment: 17 pages, 5 figures
Published: 1998
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20. Challenges in QCD matter physics --The scientific programme of the Compressed Baryonic Matter experiment at FAIR

Author: Ablyazimov, T., Abuhoza, A., Adak, R. P., Adamczyk, M., Agarwal, K., Aggarwal, M. M., Ahammed, Z., Ahmad, F., Ahmad, N., Ahmad, S., Akindinov, A., Akishin, P., Akishina, E., Akishina, T., Akishina, V., Akram, A., Al-Turany, M., Alekseev, I., Alexandrov, E., Alexandrov, I., Amar-Youcef, S., Anđelić, M., Andreeva, O., Andrei, C., Andronic, A., Anisimov, Yu., Appelshäuser, H., Argintaru, D., Atkin, E., Avdeev, S., Averbeck, R., Azmi, M. D., Baban, V., Bach, M., Badura, E., Bähr, S., Balog, T., Balzer, M., Bao, E., Baranova, N., Barczyk, T., Bartoş, D., Bashir, S., Baszczyk, M., Batenkov, O., Baublis, V., Baznat, M., Becker, J., Becker, K. -H., Belogurov, S., Belyakov, D., Bendarouach, J., Berceanu, I., Bercuci, A., Berdnikov, A., Berdnikov, Y., Berendes, R., Berezin, G., Bergmann, C., Bertini, D., Bertini, O., Beşliu, C., Bezshyyko, O., Bhaduri, P. P., Bhasin, A., Bhati, A. K., Bhattacharjee, B., Bhattacharyya, A., Bhattacharyya, T. K., Biswas, S., Blank, T., Blau, D., Blinov, V., Blume, C., Bocharov, Yu., Book, J., Breitner, T., Brüning, U., Brzychczyk, J., Bubak, A., Büsching, H., Bus, T., Butuzov, V., Bychkov, A., Byszuk, A., Cai, Xu, Cãlin, M., Cao, Ping, Caragheorgheopol, G., Carević, I., Cătănescu, V., Chakrabarti, A., Chattopadhyay, S., Chaus, A., Chen, Hongfang, Chen, LuYao, Cheng, Jianping, Chepurnov, V., Cherif, H., Chernogorov, A., Ciobanu, M. I., Claus, G., Constantin, F., Csanád, M., D’Ascenzo, N., Das, Supriya, Das, Susovan, de Cuveland, J., Debnath, B., Dementiev, D., Deng, Wendi, Deng, Zhi, Deppe, H., Deppner, I., Derenovskaya, O., Deveaux, C. A., Deveaux, M., Dey, K., Dey, M., Dillenseger, P., Dobyrn, V., Doering, D., Dong, Sheng, Dorokhov, A., Dreschmann, M., Drozd, A., Dubey, A. K., Dubnichka, S., Dubnichkova, Z., Dürr, M., Dutka, L., Dželalija, M., Elsha, V. V., Emschermann, D., Engel, H., Eremin, V., Eşanu, T., Eschke, J., Eschweiler, D., Fan, Huanhuan, Fan, Xingming, Farooq, M., Fateev, O., Feng, Shengqin, Figuli, S. P. D., Filozova, I., Finogeev, D., Fischer, P., Flemming, H., Förtsch, J., Frankenfeld, U., Friese, V., Friske, E., Fröhlich, I., Frühauf, J., Gajda, J., Galatyuk, T., Gangopadhyay, G., García Chávez, C., Gebelein, J., Ghosh, P., Ghosh, S. K., Gläßel, S., Goffe, M., Golinka-Bezshyyko, L., Golovatyuk, V., Golovnya, S., Golovtsov, V., Golubeva, M., Golubkov, D., Gómez Ramírez, A., Gorbunov, S., Gorokhov, S., Gottschalk, D., Gryboś, P., Grzeszczuk, A., Guber, F., Gudima, K., Gumiński, M., Gupta, A., Gusakov, Yu., Han, Dong, Hartmann, H., He, Shue, Hehner, J., Heine, N., Herghelegiu, A., Herrmann, N., Heß, B., Heuser, J. M., Himmi, A., Höhne, C., Holzmann, R., Hu, Dongdong, Huang, Guangming, Huang, Xinjie, Hutter, D., Ierusalimov, A., Ilgenfritz, E. -M., Irfan, M., Ivanischev, D., Ivanov, M., Ivanov, P., Ivanov, Valery, Ivanov, Victor, Ivanov, Vladimir, Ivashkin, A., Jaaskelainen, K., Jahan, H., Jain, V., Jakovlev, V., Janson, T., Jiang, Di, Jipa, A., Kadenko, I., Kähler, P., Kämpfer, B., Kalinin, V., Kallunkathariyil, J., Kampert, K. -H., Kaptur, E., Karabowicz, R., Karavichev, O., Karavicheva, T., Karmanov, D., Karnaukhov, V., Karpechev, E., Kasiński, K., Kasprowicz, G., Kaur, M., Kazantsev, A., Kebschull, U., Kekelidze, G., Khan, M. M., Khan, S. A., Khanzadeev, A., Khasanov, F., Khvorostukhin, A., Kirakosyan, V., Kirejczyk, M., Kiryakov, A., Kiš, M., Kisel, I., Kisel, P., Kiselev, S., Kiss, T., Klaus, P., Kłeczek, R., Klein-Bösing, Ch., Kleipa, V., Klochkov, V., Kmon, P., Koch, K., Kochenda, L., Koczoń, P., Koenig, W., Kohn, M., Kolb, B. W., Kolosova, A., Komkov, B., Korolev, M., Korolko, I., Kotte, R., Kovalchuk, A., Kowalski, S., Koziel, M., Kozlov, G., Kozlov, V., Kramarenko, V., Kravtsov, P., Krebs, E., Kreidl, C., Kres, I., Kresan, D., Kretschmar, G., Krieger, M., Kryanev, A. V., Kryshen, E., Kuc, M., Kucewicz, W., Kucher, V., Kudin, L., Kugler, A., Kumar, Ajit, Kumar, Ashwini, Kumar, L., Kunkel, J., Kurepin, A., Kurepin, N., Kurilkin, A., Kurilkin, P., Kushpil, V., Kuznetsov, S., Kyva, V., Ladygin, V., Lara, C., Larionov, P., Laso García, A., Lavrik, E., Lazanu, I., Lebedev, A., Lebedev, S., Lebedeva, E., Lehnert, J., Lehrbach, J., Leifels, Y., Lemke, F., Li, Cheng, Li, Qiyan, Li, Xin, Li, Yuanjing, Lindenstruth, V., Linnik, B., Liu, Feng, Lobanov, I., Lobanova, E., Löchner, S., Loizeau, P. -A., Lone, S. A., Lucio Martínez, J. A., Luo, Xiaofeng, Lymanets, A., Lyu, Pengfei, Maevskaya, A., Mahajan, S., Mahapatra, D. P., Mahmoud, T., Maj, P., Majka, Z., Malakhov, A., Malankin, E., Malkevich, D., Malyatina, O., Malygina, H., Mandal, M. M., Mandal, S., Manko, V., Manz, S., Marin Garcia, A. M., Markert, J., Masciocchi, S., Matulewicz, T., Meder, L., Merkin, M., Mialkovski, V., Michel, J., Miftakhov, N., Mik, L., Mikhailov, K., Mikhaylov, V., Milanović, B., Militsija, V., Miskowiec, D., Momot, I., Morhardt, T., Morozov, S., Müller, W. F. J., Müntz, C., Mukherjee, S., Muñoz Castillo, C. E., Murin, Yu., Najman, R., Nandi, C., Nandy, E., Naumann, L., Nayak, T., Nedosekin, A., Negi, V. S., Niebur, W., Nikulin, V., Normanov, D., Oancea, A., Oh, Kunsu, Onishchuk, Yu., Ososkov, G., Otfinowski, P., Ovcharenko, E., Pal, S., Panasenko, I., Panda, N. R., Parzhitskiy, S., Patel, V., Pauly, C., Penschuck, M., Peshekhonov, D., Peshekhonov, V., Petráček, V., Petri, M., Petriş, M., Petrovici, A., Petrovici, M., Petrovskiy, A., Petukhov, O., Pfeifer, D., Piasecki, K., Pieper, J., Pietraszko, J., Płaneta, R., Plotnikov, V., Plujko, V., Pluta, J., Pop, A., Pospisil, V., Poźniak, K., Prakash, A., Prasad, S. K., Prokudin, M., Pshenichnov, I., Pugach, M., Pugatch, V., Querchfeld, S., Rabtsun, S., Radulescu, L., Raha, S., Rami, F., Raniwala, R., Raniwala, S., Raportirenko, A., Rautenberg, J., Rauza, J., Ray, R., Razin, S., Reichelt, P., Reinecke, S., Reinefeld, A., Reshetin, A., Ristea, C., Ristea, O., Rodriguez Rodriguez, A., Roether, F., Romaniuk, R., Rost, A., Rostchin, E., Rostovtseva, I., Roy, Amitava, Roy, Ankhi, Rożynek, J., Ryabov, Yu., Sadovsky, A., Sahoo, R., Sahu, P. K., Sahu, S. K., Saini, J., Samanta, S., Sambyal, S. 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P., Singhal, V., Singla, M., Sitzmann, P., Siwek-Wilczyńska, K., Škoda, L., Skwira-Chalot, I., Som, I., Song, Guofeng, Song, Jihye, Sosin, Z., Soyk, D., Staszel, P., Strikhanov, M., Strohauer, S., Stroth, J., Sturm, C., Sultanov, R., Sun, Yongjie, Svirida, D., Svoboda, O., Szabó, A., Szczygieł, R., Talukdar, R., Tang, Zebo, Tanha, M., Tarasiuk, J., Tarassenkova, O., Târzilă, M. -G., Teklishyn, M., Tischler, T., Tlustý, P., Tölyhi, T., Toia, A., Topil’skaya, N., Träger, M., Tripathy, S., Tsakov, I., Tsyupa, Yu., Turowiecki, A., Tuturas, N. G., Uhlig, F., Usenko, E., Valin, I., Varga, D., Vassiliev, I., Vasylyev, O., Verbitskaya, E., Verhoeven, W., Veshikov, A., Visinka, R., Viyogi, Y. P., Volkov, S., Volochniuk, A., Vorobiev, A., Voronin, Aleksey, Voronin, Alexander, Vovchenko, V., Vznuzdaev, M., Wang, Dong, Wang, Xi-Wei, Wang, Yaping, Wang, Yi, Weber, M., Wendisch, C., Wessels, J. P., Wiebusch, M., Wiechula, J., Wielanek, D., Wieloch, A., Wilms, A., Winckler, N., Winter, M., Wiśniewski, K., Wolf, Gy., Won, Sanguk, Wu, Ke-Jun, Wüstenfeld, J., Xiang, Changzhou, Xu, Nu, Yang, Junfeng, Yang, Rongxing, Yin, Zhongbao, Yoo, In-Kwon, Yuldashev, B., Yushmanov, I., Zabołotny, W., Zaitsev, Yu., Zamiatin, N. I., Zanevsky, Yu., Zhalov, M., Zhang, Yifei, Zhang, Yu, Zhao, Lei, Zheng, Jiajun, Zheng, Sheng, Zhou, Daicui, Zhou, Jing, Zhu, Xianglei, Zinchenko, A., Zipper, W., Żoładź, M., Zrelov, P., Zryuev, V., Zumbruch, P., and Zyzak, M.
Published: 2017
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21. Study of baryon and search for dibaryon resonances by the pp → ppπ+π− reaction

Author: Doroshkevich, E., Bashkanov, M., Brodowski, W., Bilger, R., Calén, H., Clement, H., Ekström, C., Fransson, K., Greiff, J., Häggström, S., Höistad, B., Johanson, J., Johansson, A., Johansson, T., Kilian, K., Kullander, S., Kupść, A., Marciniewski, P., Meier, R., Morosov, B., Oelert, W., Pätzold, J., Ruber, R. J. M. Y., Scobel, W., Stepaniak, J., Sukhanov, A., Turowiecki, A., Wagner, G. J., Wilhelmi, Z., Zabierowski, J., Zlomanczuk, J., Elster, Charlotte, editor, Speth, Josef, editor, and Walcher, Thomas, editor
Published: 2004
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22. Meson Production Near Threshold

Author: Johansson, Tord, Calén, H., Dyring, J., Fransson, K., Gustafsson, L., Häggström, S., Höistad, B., Johanson, J., Johansson, A., Kullander, S., Ruber, R. J. M. Y., Zlomanczuk, J., Ekström, C., Kilian, K., Oelert, W., Sefsick, T., Bilger, R., Brodowski, W., Clement, H., Wagner, G. J., Bondar, A., Shwartz, B., Sidorov, V., Sukhanov, A., Kupsc, A., Marciniewski, P., Stepaniak, J., Zabierowski, J., Dunin, V., Morosov, B., Povtorejko, A., Zernov, A., Turowiecki, A., Wilhelmi, Z., Sopov, V., Tchernychev, T., Smit, F. D., editor, Lindsay, R., editor, and Förtsch, S. V., editor
Published: 1999
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23. Production of $ \rightarrow$ 3HeX reaction at 1360 and 1450 MeV

Author: Schönning, K., Bargholtz, Chr., Bashkanov, M., Berlowski, M., Bogoslawsky, D., Calén, H., Clement, H., Demirörs, L., Ekström, C., Fransson, K., Gerén, L., Gustafsson, L., Höistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Keleta, S., Khakimova, O., Kren, F., Kullander, S., Kupsc, A., Kuzmin, A., Lindberg, K., Marciniewski, P., Morosov, B., Oelert, W., Pauly, C., Petrén, H., Petukhov, Y., Povtorejko, A., Scobel, W., Shafigullin, R., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., Tegnér, P. -E., Thörngren Engblom, P., Tikhomirov, V., Turowiecki, A., Wagner, G. J., Wolke, M., Zabierowski, J., Zartova, I., and Złomanczuk, J.
Published: 2010
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24. Study of baryon and search for dibaryon resonances by the $pp \rightarrow pp\pi^ + \pi^-$ reaction

Author: Doroshkevich, E., Bashkanov, M., Brodowski, W., Bilger, R., Calén, H., Clement, H., Ekström, C., Fransson, K., Greiff, J., Häggström, S., Höistad, B., Johanson, J., Johansson, A., Johansson, T., Kilian, K., Kullander, S., Kupsc, A., Marciniewski, P., Meier, R., Morosov, B., Oelert, W., Pätzold, J., Ruber, R. J. M. Y., Scobel, W., Stepaniak, J., Sukhanov, A., Turowiecki, A., Wagner, G. J., Wilhelmi, Z., Zabierowski, J., and Zlomanczuk, J.
Published: 2003
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25. A signal of a narrowπNN resonance inpp →ppπ − π +

Author: Brodowski, W., Bilger, R., Calén, H., Clement, H., Ekström, C., Föhl, K., Fransson, K., Gustafsson, L., Häggström, S., Höistad, B., Johansson, A., Johansson, T., Kilian, K., Kullander, S., Kupść, A., Kurz, G., Marciniewski, P., Morosov, B., Moehn, J., Mörtsell, A., Oelert, W., Renken, V., Ruber, R., Schepkin, M. G., Siodlaczek, U., Stepaniak, J., Sukhanov, A., Turowiecki, A., Wagner, G. J., Wilhelmi, Z., Zabierowski, J., Zernov, A., and Zlomanczuk, J.
Published: 1996
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26. Study of baryon and search for dibaryon resonances by the pp → ppπ+π− reaction

Author: Doroshkevich, E., primary, Bashkanov, M., additional, Brodowski, W., additional, Bilger, R., additional, Calén, H., additional, Clement, H., additional, Ekström, C., additional, Fransson, K., additional, Greiff, J., additional, Häggström, S., additional, Höistad, B., additional, Johanson, J., additional, Johansson, A., additional, Johansson, T., additional, Kilian, K., additional, Kullander, S., additional, Kupść, A., additional, Marciniewski, P., additional, Meier, R., additional, Morosov, B., additional, Oelert, W., additional, Pätzold, J., additional, Ruber, R. J. M. Y., additional, Scobel, W., additional, Stepaniak, J., additional, Sukhanov, A., additional, Turowiecki, A., additional, Wagner, G. J., additional, Wilhelmi, Z., additional, Zabierowski, J., additional, and Zlomanczuk, J., additional
Published: 2003
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27. Meson Production Near Threshold

Author: Johansson, Tord, primary, Calén, H., additional, Dyring, J., additional, Fransson, K., additional, Gustafsson, L., additional, Häggström, S., additional, Höistad, B., additional, Johanson, J., additional, Johansson, A., additional, Kullander, S., additional, Ruber, R. J. M. Y., additional, Zlomanczuk, J., additional, Ekström, C., additional, Kilian, K., additional, Oelert, W., additional, Sefsick, T., additional, Bilger, R., additional, Brodowski, W., additional, Clement, H., additional, Wagner, G. J., additional, Bondar, A., additional, Shwartz, B., additional, Sidorov, V., additional, Sukhanov, A., additional, Kupsc, A., additional, Marciniewski, P., additional, Stepaniak, J., additional, Zabierowski, J., additional, Dunin, V., additional, Morosov, B., additional, Povtorejko, A., additional, Zernov, A., additional, Turowiecki, A., additional, Wilhelmi, Z., additional, Sopov, V., additional, and Tchernychev, T., additional
Published: 2000
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28. First results from the CELSIUS/WASA facility

Author: Kullander, S., Bargholz, C., Bashkanov, M., Bogoslawsky, D., Calén, H., Cappellaro, F., Clement, H., Demiroers, L., Dorochkevitch, E., Ekström, C., Fransson, K., Fridén, C.J., Gornov, M., Greiff, J., Gustafsson, L., Höistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, A., Johansson, T., Keletea, S., Kimura, N., Koch, I., Kipsc, A., Kuznetsov, A., Lindberg, K., Marciniewski, P., Morosov, B., Nawrot, A., Nefkens, B., Oelert, W., Pauly, C., Petukhov, Y., Povtorejko, A., Reistad, D., Ruber, R., Sandukovsky, S., Scobel, W., Shafigulin, R., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., Tchernyshev, V., Tegner, P.-E., Tikhomirov, V., Thörngren Engblom, P., Turowiecki, A., Wagner, G., Wiedner, U., Wilhelmi, Z., Yamamoto, A., Yamaoka, H., Zabierowski, J., and Zlomanczuk, J.
Published: 2003
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29. Cross sections of the [formula omitted] reaction between 310 and 425 MeV

Author: Bilger, R., Brodowski, W., Calén, H., Clement, H., Dyring, J., Ekström, C., Fäldt, G., Fransson, K., Greiff, J., Gustafsson, L., Höistad, B., Jacewicz, M., Johanson, J., Johansson, A., Johansson, T., Kilian, K., Koch, I., Kullander, S., Kupsc, A., Marciniewski, P., Morosov, B., Oelert, W., Ruber, R.J.M.Y., Sundberg, P., Shwartz, B., Stepaniak, J., Sukhanov, A., Thörngren-Engblom, P., Turowiecki, A., Wagner, G.J., Wilhelmi, Z., Wilkin, C., Zabierowski, J., and Złomańczuk, J.
Published: 2001
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30. Challenges in QCD matter physics --The scientific programme of the Compressed Baryonic Matter experiment at FAIR

Author: V. Jakovlev, R. Talukdar, Alberica Toia, V.M. Golovatyuk, P. Ivanov, Abhijit Bhattacharyya, M. Kohn, Yu. Onishchuk, M. Tanha, Suman Sau, E. Friske, L. Kumar, A. Roy, Valerica Baban, Yaping Wang, V. Blinov, D. Svirida, Pradip Kumar Sahu, D. Dementiev, A. Gomez Ramirez, M. Petris, Ming Shao, D. Blau, Yu. P. Tsyupa, A. Rost, D. P. Mahapatra, Y. F. Ryabov, D. Wielanek, Anju Bhasin, C. Lara, Saikat Biswas, Shusu Shi, E. P. Akishina, F. Seck, V. Jain, Hongfang Chen, O. Malyatina, B. Komkov, I. Carevic, V. Baublis, Raghunath Sahoo, D. Normanov, Tetyana Galatyuk, S. Amar-Youcef, Cristian Andrei, Yu. I. Bocharov, A. Vorobiev, M. Strikhanov, Y. Leifels, O. Petukhov, A. Petrovici, Dezso Varga, Oana Ristea, W. Verhoeven, J. Sánchez Rosado, Victor Golovtsov, S. Belogurov, E. Kryshen, M. Dey, Johannes Lehrbach, Y. P. Viyogi, A. V. Kazantsev, A. Himmi, M. Anđelić, Oleg Bezshyyko, Cheng Li, A. Raportirenko, Xu Cai, C. Kreidl, Daniela Bartos, T. Balog, Volker Lindenstruth, A. Chaus, M. Mohisin Khan, Mate Csanad, J. Pluta, A. Senger, Matthias Balzer, Christoph Blume, H. Appelshäuser, Di Jiang, B. Kämpfer, A. Lymanets, I. Berceanu, S. Gorbunov, S. Sarangi, V. Pospíšil, N. Heine, A. Veshikov, Yuanjing Li, V. Kushpil, Ch. Klein-Bösing, I. Selyuzhenkov, S. Razin, Guofeng Song, D. Belyakov, G. Berezin, V. Kyva, Andrei Ionut Herghelegiu, Heiko Engel, K. Schmidt, V. Klochkov, Alla Maevskaya, P.-A. Loizeau, L. Golinka-Bezshyyko, V.A. Karnaukhov, J. Bendarouach, C. Xiang, A.D. Sheremetiev, V. F. Chepurnov, Hr Schmidt, Zbigniew Sosin, M. Singla, I. Momot, O. Andreeva, I. Alexandrov, R. N. Singaraju, S. Avdeev, Evgeny Alexandrov, R. Płaneta, Gennady Ososkov, D. Hutter, A. Reinefeld, C.J. Schmidt, Andrei Dorokhov, Vikram Patel, K.-H. Becker, N. Kurepin, E. Lebedeva, C. P. Singh, Y. K. Sun, K. Jaaskelainen, Andras Szabo, J. Rożynek, Sanjeev Singh Sambyal, V. S. Negi, Krzysztof Piasecki, W. F. J. Müller, M. Baznat, N. Miftakhov, Feng Liu, N. Ahmad, L. Skoda, G. D. Kekelidze, Vladimir Ivanov, Krzysztof Kasinski, Xi-Wei Wang, D. Miskowiec, Serguei Volkov, Sudhir Raniwala, I. Tsakov, A. Nedosekin, Peter Senger, T. Barczyk, S. Dubnichka, C. Ristea, N.G. Tuturas, E. V. Atkin, D. Karmanov, W. Zabolotny, Tatiana Karavicheva, Subhasis Samanta, Yu.V. Zanevsky, S. Bähr, O. Batenkov, M. Petrovici, B. Milanovic, Muhammad Farooq, R. Karabowicz, I. Vassiliev, P. Staszel, Sheng Dong, Udo Wolfgang Kebschull, P. Koczon, Goutam Gangopadhyay, P. Zumbruch, Vladimir Plujko, Y. Berdnikov, Shue He, Volodymyr Vovchenko, V. Mialkovski, W. Zipper, T. Bus, O. Tarassenkova, S. K. Sahu, V. Militsija, Yu. Zaitsev, C. Müntz, S. K. Ghosh, Sushanta Tripathy, E. Rostchin, V. Shumikhin, I. Fröhlich, I. Panasenko, A. Laso Garcia, L. Dutka, Yu.S. Anisimov, B. Linnik, T. Tischler, A. Ivashkin, R. Kotte, Calin Besliu, T. Akishina, Rashmi Raniwala, Sheng Zheng, K. Koch, J. Kunkel, A. Shabunov, E. Lobanova, Wojciech Kucewicz, T. Breitner, M. Al-Turany, R. P. Adak, Claudiu Cornel Schiaua, S. Masciocchi, Zhongbao Yin, Xinjie Huang, Jens Wiechula, Nu Xu, I. Kisel, Christian Sturm, T. Mahmoud, V. Kalinin, A. Abuhoza, Mohd Danish Azmi, P. Zrelov, Jing Zhou, M. Dželalija, C. Deveaux, M. Goffe, Ke-Jun Wu, S. Strohauer, S. Bashir, D. Argintaru, B. Heß, A. Turowiecki, M. B. Golubeva, F. Ahmad, S. Gläßel, V. Plotnikov, Manuel Penschuck, Supriya Das, Grzegorz Kasprowicz, Vladislav Manko, O. Vasylyev, D. Kresan, L. Kudin, Yu. V. Gusakov, Dongdong Hu, Vladimir Nikulin, M. Ivanov, D. Gottschalk, Karl-Heinz Kampert, A. Kolosova, G. Caragheorgheopol, K. Dey, K. Mikhailov, Anand Kumar Dubey, J. Scholten, S. P. D. Figuli, T. Blank, Ajit Kumar, Vladimir Peshekhonov, Igor Pshenichnov, E. Badura, Michael Deveaux, I. Rostovtseva, M. Kiš, Jürgen Becker, Evgeny Karpechev, B. W. Kolb, Valery Pugatch, Xiaofeng Luo, I. Som, E. Ovcharenko, F.F. Guber, H. Büsching, H. Cherif, N. R. Panda, Zubayer Ahammed, R. Najman, Fouad Rami, M. Gumiński, J. Pieper, Jerzy Gajda, G. Kozlov, H. Jahan, A. Drozd, V. Butuzov, Joachim Stroth, I. K. Yoo, Thomas Janson, M. Petri, R. Holzmann, D. Finogeev, S. Golovnya, Ping Cao, E. Malankin, Buddhadeb Bhattacharjee, L. Meder, Junfeng Yang, Lei Zhao, C. Simon, S. Kuznetsov, I. Valin, M. Zyzak, H. Hartmann, T. Satława, Yi Wang, Anton Andronic, Daicui Zhou, Zebo Tang, M. Prokudin, V. Saveliev, Qiyan Li, I. M. Deppner, Mahitosh Mandal, F. Uhlig, J. A. Lucio Martínez, J. Book, L. Mik, S. Schatral, S. K. Pal, A. Petrovskiy, J. Pietraszko, B. Debnath, E. Usenko, O. Svoboda, Gy. Wolf, V.V. Elsha, J. Lehnert, Pengfei Lyu, S. Seddiki, Peter Fischer, Huanhuan Fan, D. Doering, J. Frühauf, C. Wendisch, Yu Zhang, V. Kozlov, P. Tlustý, Piotr Otfinowski, N. Baranova, Sergey Kiselev, J. Rautenberg, Dmitry Mal'kevich, I. Kadenko, I. Lobanov, Mikhail Zhalov, A. Rodriguez Rodriguez, D. Emschermann, Vikas Singhal, Pavel Akishin, M. Bach, P. Kravtsov, X. Zhu, C. Nandi, I. Korolko, Rongxing Yang, E. Nandy, D. Ivanischev, Anil Prakash, A. Semennikov, I. E. Yushmanov, S. Parzhitskiy, M. Vznuzdaev, A. Khvorostukhin, A. Kiryakov, Soma Mukherjee, LuYao Chen, M. Pugach, Piotr Kmon, J. Gebelein, V. Kleipa, C. Bergmann, Kai Schweda, S. Rabtsun, Victor Ivanov, Tivadar Kiss, M. Dreschmann, I. G. Alekseev, A. K. Kurilkin, A. Volochniuk, E. Krebs, A. Lebedev, V. Kramarenko, N. Topil'skaya, S. Das, S. Lebedev, S. Querchfeld, Madan M. Aggarwal, N.I. Zamiatin, Amrendra K. Singh, Swagata Mandal, A. Khanzadeev, C. Simons, Gilles Claus, U. Frankenfeld, V.V. Ivanov, A. Chernogorov, Pascal Dillenseger, V. Dobyrn, Z. Dubnichkova, S. Löchner, Bhartendu K. Singh, S. Ahmad, Rishat Sultanov, J. Kallunkathariyil, A. Wieloch, T. Matulewicz, R. Berendes, A. Shabanov, Saniya Khan, V. Friese, Anik Gupta, L. Kochenda, M. Kirejczyk, Pavel Kisel, Amlan Chakrabarti, Ashwini Kumar, Michal Koziel, A. Berdnikov, A. Sadovsky, T. O. Ablyazimov, S. Mahajan, M. Merkin, Robert Szczygiel, C. Pauly, Krzysztof Poźniak, F. Roether, Alexey Kurepin, Alexander Voronin, A. Bubak, Nikolai Shumeiko, Nicolas Winckler, A. V. Kryanev, Andrey Reshetin, A. Simakov, Sukalyan Chattopadhyay, E. M. Ilgenfritz, B. Sikora, Jihye Song, J. Hehner, Zhi Deng, M. Irfan, J. Saini, S. A. Lone, L. Naumann, D. Eschweiler, A. M. Marin Garcia, P. Kähler, O. Derenovskaya, A.P. Ierusalimov, Alexandru Jipa, K. Agarwal, T. Tolyhi, H. Malygina, Xingming Fan, Amalia Pop, Dmitry Golubkov, E. M. Verbitskaya, L. Radulescu, Ryszard S. Romaniuk, D. Pfeifer, Yifei Zhang, Rajarshi Ray, V. Zryuev, M. Teklishyn, M. Träger, S. Morozov, H. Flemming, A. Oancea, A. Wilms, P. Ghosh, A. Grzeszczuk, V. Mikhaylov, Patrick Simon Reichelt, Ankhi Roy, Sanguk Won, Vladimir Samsonov, T. Esanu, V. Akishina, D.V. Peshekhonov, A.I. Zinchenko, M. Żoładź, Xin Li, I. Sibiryak, J. Wüstenfeld, Aleksey Voronin, M. Korolev, Guangming Huang, A. Kugler, E. Kaptur, J. Michel, J. Tarasiuk, Manjit Kaur, A. Bychkov, F. Lemke, Bekhzod S Yuldashev, T. K. Bhattacharyya, S. Gorokhov, F. Schintke, P. Klaus, Adrian Byszuk, Ionel Lazanu, Dong Wang, Michael Dürr, M. Krieger, H. Deppe, Sibaji Raha, O. Sander, S. Kowalski, K. Wiśniewski, Alexander Malakhov, I. Filozova, Shengqin Feng, M. Calin, S. Reinecke, V. Kucher, M. Weber, A. Kovalchuk, V. Petráček, M. Adamczyk, K.K. Gudima, Johannes Peter Wessels, P. Sitzmann, J. Markert, V. K. Eremin, Alexandru Bercuci, Marc Winter, Mateusz Baszczyk, M.I. Ciobanu, E. Bao, M. Kuc, U. Brüning, O. V. Fateev, Piotr Maj, J. de Cuveland, M. G. Târzilă, Pavel Larionov, R. Averbeck, Jianping Cheng, Jacek Rauza, C. E. Muñoz Castillo, N. D'Ascenzo, O. Bertini, Wendi Deng, G. Kretschmar, I. Skwira-Chalot, W. Niebur, K. Oh, V. P. Ladygin, T. Morhardt, C. Höhne, M. G. Wiebusch, Partha Pratim Bhaduri, Dong Han, Oleg Karavichev, N. Herrmann, R. Visinka, F. Constantin, C. García Chávez, J. Brzychczyk, Sidharth Kumar Prasad, D. Soyk, V. V. Kirakosyan, W. Koenig, D. Bertini, Z. Majka, F. Khasanov, J. Eschke, P. Gryboś, E. Lavrik, V. Cătănescu, K. Siwek-Wilczyńska, P. K. Kurilkin, J.M. Heuser, Adeel Akram, Yu. Murin, Alexander Akindinov, A. K. Bhati, I. Kres, J. Förtsch, Rafal Kleczek, Jiajun Zheng, S. Manz, T. K. Nayak, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), CBM, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: J/psi(3100), Phase transition, matter: interaction, Hadron, Nuclear Theory, hypernucleus, 7. Clean energy, 01 natural sciences, Critical point (thermodynamics), transport theory, hadron: gas, Nuclear Experiment, neutron star, QCD matter, Brookhaven RHIC Coll, quark gluon: plasma, Physics, Large Hadron Collider, fireball, elliptic flow, strong interaction, Observable, heavy ion, CERN LHC Coll, QCD matter, Quark-Gluon-Plasma (QGP), QCD phase diagram, strong interaction, hadronic matter, partonic matte, heavy-ion, 2-4.9 GeV/nucleon, Nuclear and High Energy Physics, Particle physics, CBM, charmonium, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Strong interaction, review, nonperturbative, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], symmetry: chiral, quantum chromodynamics: critical phenomena, strangeness, 0103 physical sciences, density: high, Darmstadt GSI FAIR, structure, 010306 general physics, equation of state, quantum chromodynamics: matter, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, nucleus, temperature: high, baryon, Neutron star, Automatic Keywords, HADES, charm
Abstract: International audience; Substantial experimental and theoretical efforts worldwide are devoted to explore the phase diagram of strongly interacting matter. At LHC and top RHIC energies, QCD matter is studied at very high temperatures and nearly vanishing net-baryon densities. There is evidence that a Quark-Gluon-Plasma (QGP) was created at experiments at RHIC and LHC. The transition from the QGP back to the hadron gas is found to be a smooth cross over. For larger net-baryon densities and lower temperatures, it is expected that the QCD phase diagram exhibits a rich structure, such as a first-order phase transition between hadronic and partonic matter which terminates in a critical point, or exotic phases like quarkyonic matter. The discovery of these landmarks would be a breakthrough in our understanding of the strong interaction and is therefore in the focus of various high-energy heavy-ion research programs. The Compressed Baryonic Matter (CBM) experiment at FAIR will play a unique role in the exploration of the QCD phase diagram in the region of high net-baryon densities, because it is designed to run at unprecedented interaction rates. High-rate operation is the key prerequisite for high-precision measurements of multi-differential observables and of rare diagnostic probes which are sensitive to the dense phase of the nuclear fireball. The goal of the CBM experiment at SIS100 ( $\sqrt{s_{NN}}=$ 2.7--4.9 GeV) is to discover fundamental properties of QCD matter: the phase structure at large baryon-chemical potentials ( $\mu_B > 500$ MeV), effects of chiral symmetry, and the equation of state at high density as it is expected to occur in the core of neutron stars. In this article, we review the motivation for and the physics programme of CBM, including activities before the start of data taking in 2024, in the context of the worldwide efforts to explore high-density QCD matter.
Published: 2017

31. CBM Collaboration

Author: T. Ablyazimov, A. Abuhoza, R. Adak, J. Adamczewski-Musch, M. Adamczyk, M.M. Aggarwal, Z. Ahammed, F. Ahmad, N. Ahmad, S. Ahmad, A. Akindinov, P. Akishin, E. Akishina, T. Akishina, V. Akishina, M. Al-Turany, E. Alexandrov, I. Alexandrov, S. Amar-Youcef, M. Anđelić, O. Andreeva, C. Andrei, A. Andronic, Yu. Anisimov, H. Appelshäuser, A. Arend, D. Argintaru, E. Atkin, S. Avdeev, R. Averbeck, M.D. Azmi, V. Baban, M. Bach, E. Badura, S. Baginyan, T. Balle, T. Balog, S. Bandyopadhyay, P. Banerjee, N. Baranova, T. Barczyk, D. Bartoş, S. Bashir, Z. Basrak, M. Baszczyk, O. Batenkov, V. Baublis, C. Baumann, M. Baznat, K.-H. Becker, T. Bel, S. Belogurov, J. Bendarouach, I. Berceanu, A. Bercuci, E. Berdermann, A. Berdnikov, Y. Berdnikov, R. Berendes, C. Bergmann, D. Bertini, O. Bertini, C. Beşliu, O. Bezshyyko, P.P. Bhaduri, A. Bhasin, A.K. Bhati, B. Bhattacharjee, A. Bhattacharyya, T.K. Bhattacharyya, S. Biswas, D. Blau, C. Blume, Yu. Bocharov, S. Böttger, M. Borysova, T. Breitner, U. Brüning, J. Brzychczyk, A. Bubak, H. Büsching, A. Bychkov, A. Byszuk, Xu Cai, M. Cãlin, Ping Cao, R. Čaplar, G. Caragheorgheopol, I. Carević, V. Cătănescu, A. Chakrabarti, S. Chatterji, Sanatan Chattopadhyay, Subhasis Chattopadhyay, Hongfang Chen, Jianping Cheng, V. Chepurnov, S. Chernenko, A. Chernogorov, Kyung-Eon Choi, M.I. Ciobanu, G. Claus, F. Constantin, V. Covlea, M. Csanád, N. D'Ascenzo, S. Das, K. Davkov, V. Davkov, J. de Cuveland, B. Debnath, D. Dementiev, Zhi Deng, H. Deppe, I. Deppner, O. Derenovskaya, C.A. Deveaux, M. Deveaux, K. Dey, M. Dey, P. Dillenseger, V. Dobyrn, D. Doering, A. Dorokhov, A. Drozd, A.K. Dubey, S. Dubnichka, A. Dubnichkova, M. Dürr, W. Dulinski, L. Dutka, M. Dželalija, D. Emschermann, H. Engel, V. Eremin, T. Eşanu, J. Eschke, D. Eschweiler, Jongsik Eum, Huanhuan Fan, O. Fateev, I. Filozova, D. Finogeev, P. Fischer, H. Flemming, U. Frankenfeld, V. Friese, E. Friske, I. Fröhlich, J. Frühauf, Á. Fülöp, J. Gajda, T. Galatyuk, A. Galkin, V. Galkin, G. Gangopadhyay, C. García Chávez, I. Gašparić, J. Gebelein, P. Ghosh, S.K. Ghosh, M. Goffe, L. Golinka-Bezshyyko, V. Golovatyuk, S. Golovnya, V. Golovtsov, M. Golubeva, D. Golubkov, A. Gómez Ramírez, S. Gorbunov, S. Gorokhov, D. Gottschalk, P. Gryboś, A. Grzeszczuk, F. Guber, K. Gudima, A. Gupta, Yu. Gusakov, A. Haldar, S. Haldar, H. Hartmann, J. Hehner, K. Heidel, N. Heine, E. Hellbär, A. Herghelegiu, N. Herrmann, B. Heß, J.M. Heuser, A. Himmi, C. Höhne, R. Holzmann, Guangming Huang, Xinjie Huang, J. Hutsch, D. Hutter, E. Iakovleva, A. Ierusalimov, E.-M. Ilgenfritz, M. Irfan, M. Ivanov, Valery Ivanov, Victor Ivanov, Vladimir Ivanov, A. Ivashkin, K. Jaaskelainen, H. Jahan, V. Jain, V. Jakovlev, T. Janson, A. Jipa, I. Kadenko, B. Kämpfer, S. Kalcher, V. Kalinin, K.-H. Kampert, Tae Im Kang, E. Kaptur, R. Karabowicz, O. Karavichev, T. Karavicheva, D. Karmanov, V. Karnaukhov, E. Karpechev, K. Kasiński, G. Kasprowicz, M. Kaur, A. Kazantsev, U. Kebschull, G. Kekelidze, M.M. Khan, S.A. Khan, A. Khanzadeev, F. Khasanov, A. Khvorostukhin, V. Kirakosyan, M. Kirejczyk, A. Kiryakov, M. Kiš, I. Kisel, P. Kisel, S. Kiselev, A. Kiss, T. Kiss, P. Klaus, R. Kłeczek, Ch. Klein-Bösing, V. Kleipa, P. Kmon, K. Koch, L. Kochenda, P. Koczoń, W. König, M. Kohn, B.W. Kolb, A. Kolosova, B. Komkov, J.M. Kopfer, M. Korolev, I. Korolko, R. Kotte, A. Kotynia, A. Kovalchuk, S. Kowalski, M. Koziel, G. Kozlov, P. Kravtsov, E. Krebs, C. Kreidl, D. Kresan, G. Kretschmar, M. Kretz, M. Krieger, E. Kryshen, W. Kucewicz, L. Kudin, A. Kugler, I. Kulakov, J. Kunkel, A. Kurepin, P. Kurilkin, V. Kushpil, V. Kyva, V. Ladygin, C. Lara, P. Larionov, A. Laso Garcia, E. Lavrik, I. Lazanu, A. Lebedev, S. Lebedev, E. Lebedeva, J. Lehnert, J. Lehrbach, F. Lemke, Cheng Li, Jin Li, Qiyan Li, Yuanjing Li, Yulan Li, V. Lindenstruth, S. Linev, B. Linnik, E. Litvinenko, Feng Liu, I. Lobanov, E. Lobanova, S. Löchner, P.-A. Loizeau, J.A. Lucio Martínez, A. Lymanets, A. Maevskaya, S. Mahajan, D.P. Mahapatra, T. Mahmoud, P. Maj, Z. Majka, A. Malakhov, E. Malankin, D. Malkevich, O. Malyatina, H. Malygina, S. Mandal, V. Manko, S. Manz, V. Marin, A.M. Marin Garcia, J. Markert, S. Masciocchi, T. Matulewicz, M. Merkin, V. Mialkovski, J. Michel, N. Miftakhov, K. Mikhailov, V. Mikhaylov, B. Milanović, V. Militsija, M.F. Mir, D. Miskowiec, T. Morhardt, W.F.J. Müller, C. Müntz, Yu. Murin, R. Najman, L. Naumann, T. Nayak, A. Nedosekin, B. Neumann, W. Niebur, V. Nikulin, D. Normanov, M. Nüssle, A. Oancea, Kunsu Oh, Y. Onishchuk, D. Osipov, G. Ososkov, D. Ossetski, P. Otfinowski, E. Ovcharenko, S. Pal, I. Panasenko, N.R. Panda, S. Parzhitskiy, C. Pauly, Haiping Peng, I. Peric, D. Peshekhonov, V. Peshekhonov, V. Petráček, M. Petriş, A. Petrovici, M. Petrovici, A. Petrovskiy, O. Petukhov, K. Piasecki, J. Pieper, J. Pietraszko, R. Płaneta, E. Plekhanov, V. Plotnikov, V. Plujko, J. Pluta, V. Poliakov, P. Polozov, A. Pop, V. Popov, V. Pospisil, B.V.K.S. Potukuchi, J. Pouryamout, K. Poźniak, A. Prakash, M. Prokudin, I. Pshenichnov, M. Pugach, V. Pugatch, S. Querchfeld, L. Radulescu, S. Raha, W. Raja, F. Rami, R. Raniwala, S. Raniwala, A. Raportirenko, J. Rautenberg, J. Rauza, R. Ray, S. Razin, P. Reichelt, S. Reinecke, A. Reshetin, C. Ristea, O. Ristea, F. Roether, R. Romaniuk, A. Rost, E. Rostchin, I. Rostovtseva, A. Roy, J. Rożynek, Yu. Ryabov, V. Rykalin, A. Sadovsky, S. Sadovsky, R. Sahoo, P.K. Sahu, J. Saini, S. Samanta, S.S. Sambyal, V. Samsonov, J. Sánchez Rosado, S. Sau, V. Saveliev, S. Schatral, C. Schiaua, C.J. Schmidt, H.R. Schmidt, K. Schmidt, K. Schweda, A. Scurtu, F. Seck, S. Seddiki, I. Selyuzhenkov, A. Semennikov, A. Senger, P. Senger, A. Shabunov, Ming Shao, M.K. Sharma, N. Shumeiko, V. Shumikhin, B. Sikora, A. Simakov, C. Simon, C. Simons, R.N. Singaraju, A.K. Singh, B.K. Singh, C.P. Singh, V. Singhal, K. Siwek-Wilczyńska, L. Škoda, I. Skwira-Chalot, I. Som, Jihye Song, I. Sorokin, Z. Sosin, D. Soyk, P. Staszel, A. Stavinskiy, E. Stephan, D. Storozhyk, M. Strikhanov, S. Strohauer, J. Stroth, C. Sturm, R. Sultanov, Yongjie Sun, O. Svoboda, R. Szczygieł, R. Talukdar, Zebo Tang, M. Tanha, J. Tarasiuk, O. Tarassenkova, M.-G. Târzilă, V. Tiflov, T. Tischler, P. Tlustý, A. Toia, T. Tolyhi, N. Topil'skaya, C. Trageser, P. Trivedy, I. Tsakov, Yu. Tsyupa, A. Turowiecki, F. Uhlig, E. Usenko, I. Valin, T. Vasiliev, I. Vassiliev, E. Verbitskaya, W. Verhoeven, A. Veshikov, R. Visinka, Y.P. Viyogi, S. Volkov, Yu. Volkov, A. Vorobiev, A. Voronin, V. Vovchenko, E. Vznuzdaev, M. Vznuzdaev, Dong Wang, Yaping Wang, Wang Yi, C. Wendisch, J.P. Wessels, M. Wiebusch, J. Wiechula, B. Wiedemann, D. Wielanek, A. Wieloch, N. Winckler, M. Winter, K. Wiśniewski, D. Wohlfeld, Gy. Wolf, Won Sanguk, J. Wüstenfeld, Changzhou Xiang, Xu Nu, Jun-Gyu Yi, Zhongbao Yin, In-Kwon Yoo, Qian Yue, B. Yuldashev, I. Yushmanov, W. Zabołotny, Yu. Zaitsev, Yu. Zanevsky, M. Zhalov, Ya Peng Zhang, Yifei Zhang, Daicui Zhou, Xianglei Zhu, A. Zinchenko, W. Zipper, M. Żoładź, P. Zrelov, V. Zryuev, P. Zumbruch, and M. Zyzak
Subjects: Nuclear and High Energy Physics
Published: 2014

32. The WASA detector at CELSIUS

Author: Bilger, R., Blom, M., Bogoslawsky, D., Bondar, A., Brodowski, W., Calen, H., Chuvilo, I., Clement, H., Dunin, V., Dyring, J., Ekström, C., Fransson, K., Friden, C-J., Gustafsson, L., Häggström, S., Höistad, B., Jacewicz, M., Johanson, J., Johansson, A., Johansson, T., Khoukaz, A., Kilian, K., Kimura, N., Koch, I., Kolachev, G., Komogorov, M., Kullander, S., Kupsc, A., Kurdadze, L., Kuzmin, A., Kuznetsov, A., Marciniewski, P., Martemyanov, A., Martemyanov, B., Morosov, B., Mörtsell, A., Nawrot, A., Oelert, W., Oreshkin, S., Petukhov, Y., Povtorejko, A., Przestrzelska, K., Pätzold, J., Reistad, D., Ruber, R.J.M.Y., Sandukovsky, V., Schuberth, U., Sefzick, T., Sidorov, V., Shwartz, B., Sopov, V., Stepaniak, J., Sukhanov, A., Sundberg, P., Tchernychev, V., Tikhomirov, V., Turowiecki, A., Wagner, G., Wilhelmi, Z., Yamamoto, A., Yamaoka, H., Zabierowski, J., Zernov, A., and Zlomanczuk, J.
Published: 2000
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33. Spectator tagging in quasi-free pn-reactions on deuterium at PROMICE/WASA, CELSIUS

Author: Bilger, R., Brodowski, W., Calen, H., Clement, H., Dunin, V., Dyring, J., Ekström, C., Fransson, K., Greiff, J., Gustafsson, L., Häggström, S., Höistad, B., Johanson, J., Johansson, A., Johansson, T., Khoukaz, A., Kilian, K., Koch, I., Kullander, S., Kupsc, A., Marciniewski, P., Morosov, B., Neubauer, T., Oelert, W., Ruber, R., Shwartz, B., Stepaniak, J., Sukhanov, A., Sundberg, P., Turowiecki, A., Wagner, G., Wilhelmi, Z., Wilkin, C., Zabierowski, J., Zernov, A., and Zlomanczuk, J.
Published: 2000
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34. 2 π production in pp collisions close to threshold

Author: Bilger, R., Brodowski, W., Calén, H., Clement, H., Dyring, J., Ekström, C., Fransson, K., Gustafsson, L., Häggström, S., Höistad, B., Johanson, J., Johansson, A., Johansson, T., Khoukaz, A., Kilian, K., Kullander, S., Kupść, A., Marciniewski, P., Morosov, B., Mörtsell, A., Oelert, W., Pätzold, J., Ruber, R.J.M.Y., Schepkin, M.G., Stepaniak, J., Sukhanov, A., Sundberg, P., Turowiecki, A., Wagner, G.J., Wilhelmi, Z., Zabierowski, J., Zernov, A., and Zlomanczuk, J.
Published: 2000
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35. Differential cross sections of the pp → ppπ0 reaction from 310 to 425 MeV

Author: Złomańczuk, J., Bilger, R., Brodowski, W., Calén, H., Clement, H., Dyring, J., Ekström, C., Fäldt, G., Fransson, K., Gustafsson, L., Häggström, S., Höistad, B., Johanson, J., Johansson, A., Johansson, T., Kilian, K., Kullander, S., Kupsc, A., Marciniewski, P., Morosov, B., Mörtsell, A., Oelert, W., Ruber, R.J.M.Y., Schuberth, U., Sundberg, P., Shwartz, B., Stepaniak, J., Sukhanov, A., Turowiecki, A., Wagner, G.J., Wilhelmi, Z., Wilkin, C., Zabierowski, J., and Zernov, A.
Published: 2000
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36. Recent results from the CELSIUS/WASA collaboration on meson production in proton-hydrogen collisions

Author: Bilger, R., Bondar, A., Brodowski, W., Calen, H., Clement, H., Dyring, J., Ekström, C., Fransson, K., Gustafsson, L., Häggström, S., Höistad, B., Johanson, J., Johansson, A., Johansson, T., Kilian, K., Kullander, S., Kupsc, A., Kuzmin, A., Marciniewski, P., Morosov, B., Mörtsell, A., Oelert, W., Povtorejko, A., Ruber, R.J.M.Y., Schuberth, U., Sefzick, T., Sidorov, V., Shwartz, B., Sopov, V., Stepaniak, J., Sukhanov, A., Tchernychev, V., Turowiecki, A., Wagner, G., Wilhelmi, Z., Zabierowski, J., Zernov, A., and Zlomanczuk, J.
Published: 1999
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37. Higher partial waves in pp→ ppη near threshold

Author: Calén, H., Dyring, J., Fäldt, G., Fransson, K., Gustafsson, L., Häggström, S., Höistad, B., Johanson, J., Johansson, A., Johansson, T., Kullander, S., Mörtsell, A., Ruber, R., Złomańczuk, J., Ekström, C., Kilian, K., Oelert, W., Sefzick, T., Bilger, R., Brodowski, W., Clement, H., Wagner, G.J., Bondar, A., Kuzmin, A., Shwartz, B., Sidorov, V., Sukhanov, A., Dunin, V., Morosov, B., Povtorejko, A., Zernov, A., Kupsc, A., Marciniewski, P., Stepaniak, J., Zabierowski, J., Turowiecki, A., Wilhelmi, Z., and Wilkin, C.
Published: 1999
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38. Observation of strong final-state effects in π+ production in pp collisions at 400 MeV

Author: Betsch, A, Bilger, R, Brodowski, W, Calén, H, Clement, H, Dyring, J, Ekström, C, Fransson, K, Gustafsson, L, Häggström, S, Höistad, B, Johanson, J, Johansson, A, Johansson, T, Kilian, K, Kullander, S, Kupść, A, Kurz, G, Marciniewski, P, Morosov, B, Mörtsell, A, Oelert, W, Pätzold, J, Ruber, R.J.M.Y, Schepkin, M.G, Stepaniak, J, Sukhanov, A, Turowiecki, A, Wagner, G.J, Wilhelmi, Z, Zabierowski, J, Zernov, A, and Złomańczuk, J
Published: 1999
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39. Challenges in QCD matter physics - The Compressed Baryonic Matter experiment at FAIR

Author: Ablyazimov, T., Abuhoza, A., Adak, R. P., Adamczyk, M., Agarwal, K., Aggarwal, M. M., Ahammed, Z., Ahmad, F., Ahmad, N., Ahmad, S., Akindinov, A., Akishin, P., Akishina, E., Akishina, T., Akishina, V., Akram, A., Al-Turany, M., Alekseev, I., Alexandrov, E., Alexandrov, I., Amar-Youcef, S., Anđelić, M., Andreeva, O., Andrei, C., Andronic, A., Anisimov, Y., Appelshäuser, H., Argintaru, D., Atkin, E., Avdeev, S., Averbeck, R., Azmi, M. D., Baban, V., Bach, M., Badura, E., Bähr, S., Balog, T., Balzer, M., Bao, E., Baranova, N., Barczyk, T., Bartoş, D., Bashir, S., Baszczyk, M., Batenkov, O., Baublis, V., Baznat, M., Becker, J., Becker, K.-H., Belogurov, S., Belyakov, D., Bendarouach, J., Berceanu, I., Bercuci, A., Berdnikov, A., Berdnikov, Y., Berendes, R., Berezin, G., Bergmann, C., Bertini, D., Bertini, O., Beşliu, C., Bezshyyko, O., Bhaduri, P. P., Bhasin, A., Bhati, A. K., Bhattacharjee, B., Bhattacharyya, A., Bhattacharyya, T. K., Biswas, S., Blank, T., Blau, D., Blinov, V., Blume, C., Bocharov, Y., Book, J., Breitner, T., Brüning, U., Brzychczyk, J., Bubak, A., Büsching, H., Bus, T., Butuzov, V., Bychkov, A., Byszuk, A., Cai, X., Cálin, M., Cao, P., Caragheorgheopol, G., Carević, I., Cătănescu, V., Chakrabarti, A., Chattopadhyay, S., Chaus, A., Chen, H., Chen, L., Chen, J., Chepurnov, V., Cherif, H., Chernogorov, A., Ciobanu, M. I., Claus, G., Constantin, F., Csanád, M., D'Ascenzo, N., Das, S., Cuveland, J., Debnath, B., Dementiev, D., Deng, W., Deng, C., Deppe, H., Deppner, I., Derenovskaya, O., Deveaux, C. A., Deveaux, M., Dey, K., Dey, M., Dillenseger, P., Dobyrn, V., Doering, D., Dong, S., Dorokhov, A., Dreschmann, M., Drozd, A., Dubey, A. K., Dubnichka, S., Dubnichkova, Z., Dürr, M., Dutka, L., Dželalija, M., Elsha, V. V., Emschermann, D., Engel, H., Eremin, V., Eşanu, T., Eschke, J., Eschweiler, D., Fan, H., Fan, X., Farooq, M., Fateev, O., Feng, S., Figuli, S. P. D., Filozova, I., Finogeev, D., Fischer, P., Flemming, H., Förtsch, J., Frankenfeld, U., Friese, V., Friske, E., Fröhlich, I., Frühauf, J., Gajda, J., Galatyuk, T., Gangopadhyay, G., García Chávez, C., Gebelein, J., Ghosh, P., Ghosh, S. K., Gläßel, S., Goffe, M., Golinka-Bezshyyko, L., Golovatyuk, V., Golovnya, S., Golovtsov, V., Golubeva, M., Golubkov, D., Gómez Ramírez, A., Gorbunov, S., Gorokhov, S., Gottschalk, D., Gryboś, P., Grzeszczuk, A., Guber, F., Gudima, K., Gumiński, M., Gupta, A., Gusakov, Y., Han, D., Hartmann, H., He, S., Hehner, J., Heine, N., Herghelegiu, A., Herrmann, N., Heß, B., Heuser, J. M., Himmi, A., Höhne, C., Holzmann, R., Hu, D., Huang, G., Huang, X., Hutter, D., Ierusalimov, A., Ilgenfritz, E.-M., Irfan, M., Ivanischev, D., Ivanov, M., Ivanov, P., Ivanov, V., Ivashkin, A., Jaaskelainen, K., Jahan, H., Jain, V., Jakovlev, V., Janson, T., Jiang, D., Jipa, A., Kadenko, I., Kähler, P., Kämpfer, B., Kalinin, V., Kallunkathariyil, J., Kampert, K.-H., Kaptur, E., Karabowicz, R., Karavichev, O., Karavicheva, T., Karmanov, D., Karnaukhov, V., Karpechev, E., Kasiński, K., Kasprowicz, G., Kaur, M., Kazantsev, A., Kebschull, U., Kekelidze, G., Khan, M. M., Khan, S. A., Khanzadeev, A., Khasanov, F., Khvorostukhin, A., Kirakosyan, V., Kirejczyk, M., Kiryakov, A., Kiš, M., Kisel, I., Kisel, P., Kiselev, S., Kiss, T., Klaus, P., Kłeczek, R., Klein-Bösing, C., Kleipa, V., Klochkov, V., Kmon, P., Koch, K., Kochenda, L., Koczoń, P., Koenig, W., Kohn, M., Kolb, B. W., Kolosova, A., Komkov, B., Korolev, M., Korolko, I., Kotte, R., Kovalchuk, A., Kowalski, S., Koziel, M., Kozlov, G., Kozlov, V., Kramarenko, V., Kravtsov, P., Krebs, E., Kreidl, C., Kres, I., Kresan, D., Kretschmar, G., Krieger, M., Kryanev, A. V., Kryshen, E., Kuc, M., Kucewicz, W., Kucher, V., Kudin, L., Kugler, A., Kumar, A., Kumar, L., Kunkel, J., Kurepin, A., Kurepin, N., Kurilkin, A., Kurilkin, P., Kushpil, V., Kuznetsov, S., Kyva, V., Ladygin, V., Lara, C., Larionov, P., Laso García, A., Lavrik, E., Lazanu, I., Lebedev, A., Lebedev, S., Lebedeva, E., Lehnert, J., Lehrbach, J., Leifels, Y., Lemke, F., Li, C., Li, Q., Li, X., Li, Y., Lindenstruth, V., Linnik, B., Liu, F., Lobanov, I., Lobanova, E., Löchner, S., Loizeau, P.-A., Lone, S. A., Lucio Martínez, J. A., Luo, X., Lymanets, A., Lyu, P., Maevskaya, A., Mahajan, S., Mahapatra, D. P., Mahmoud, T., Maj, P., Majka, Z., Malakhov, A., Malankin, E., Malkevich, D., Malyatina, O., Malygina, H., Mandal, M. M., Mandal, S., Manko, V., Manz, S., Marin Garcia, A. M., Markert, J., Masciocchi, S., Matulewicz, T., Meder, L., Merkin, M., Mialkovski, V., Michel, J., Miftakhov, N., Mik, L., Mikhailov, K., Mikhaylov, V., Milanović, B., Militsija, V., Miskowiec, D., Momot, I., Morhardt, T., Morozov, S., Müller, W. F. J., Müntz, C., Mukherjee, S., Muńoz Castillo, C. E., Murin, Y., Najman, R., Nandi, C., Nandy, E., Naumann, L., Nayak, T., Nedosekin, A., Negi, V. S., Niebur, W., Nikulin, V., Normanov, D., Oancea, A., Oh, K., Onishchuk, Y., Ososkov, G., Otfinowski, P., Ovcharenko, E., Pal, S., Panasenko, I., Panda, N. R., Parzhitskiy, S., Patel, V., Pauly, C., Penschuck, M., Peshekhonov, D., Peshekhonov, V., Petráček, V., Petri, M., Petriş, M., Petrovici, A., Petrovici, M., Petrovskiy, A., Petukhov, O., Pfeifer, D., Piasecki, K., Pieper, J., Pietraszko, J., Płaneta, R., Plotnikov, V., Plujko, V., Pluta, J., Pop, A., Pospisil, V., Poźniak, K., Prakash, A., Prasad, S. K., Prokudin, M., Pshenichnov, I., Pugach, M., Pugatch, V., Querchfeld, S., Rabtsun, S., Radulescu, L., Raha, S., Rami, F., Raniwala, R., Raniwala, S., Raportirenko, A., Rautenberg, J., Rauza, J., Ray, R., Razin, S., Reichelt, P., Reinecke, S., Reinefeld, A., Reshetin, A., Ristea, C., Ristea, O., Rodriguez Rodriguez, A., Roether, F., Romaniuk, R., Rost, A., Rostchin, E., Rostovtseva, I., Roy, A., Rożynek, J., Ryabov, Y., Sadovsky, A., Sahoo, R., Sahu, P. K., Sahu, S. K., Saini, J., Samanta, S., Sambyal, S. S., Samsonov, V., Sánchez Rosado, J., Sander, O., Sarangi, S., Satława, T., Sau, S., Saveliev, V., Schatral, S., Schiaua, C., Schintke, F., Schmidt, C. J., Schmidt, H. R., Schmidt, K., Scholten, J., Schweda, K., Seck, F., Seddiki, S., Selyuzhenkov, I., Semennikov, A., Senger, A., Senger, P., Shabanov, A., Shabunov, A., Shao, M., Sheremetiev, A. D., Shi, S., Shumeiko, N., Shumikhin, V., Sibiryak, I., Sikora, B., Simakov, A., Simon, C., Simons, C., Singaraju, R. N., Singh, A. K., Singh, B. K., Singh, C. P., Singhal, V., Singla, M., Sitzmann, P., Siwek-Wilczyńska, K., Skwira-Chalot, I., Som, I., Song, G., Song, J., Sosin, Z., Soyk, D., Staszel, P., Strikhanov, M., Strohauer, S., Stroth, J., Sturm, C., Sultanov, R., Sun, Y., Svirida, D., Svoboda, O., Szabó, A., Szczygieł, R., Talukdar, R., Tang, Z., Tanha, M., Tarasiuk, J., Tarassenkova, O., Târzilă, M.-G., Teklishyn, M., Tischler, T., Tlustý, P., Tölyhi, T., Toia, A., Topil'Skaya, N., Träger, M., Tripathy, S., Tsakov, I., Tsyupa, Y., Turowiecki, A., Tuturas, N. G., Uhlig, F., Usenko, E., Valin, I., Varga, D., Vassiliev, I., Vasylyev, O., Verbitskaya, E., Verhoeven, W., Veshikov, A., Visinka, R., Viyogi, Y. P., Volkov, S., Volochniuk, A., Vorobiev, A., Voronin, A., Vovchenko, V., Vznuzdaev, M., Wang, D., Wang, X.-W., Wang, Y., Weber, M., Wendisch, C., Wessels, J. P., Wiebusch, M., Wiechula, J., Wielanek, D., Wieloch, A., Wilms, A., Winckler, N., Winter, M., Wiśniewski, K., Wolf, G., Won, S., Wu, K.-J., Wüstenfeld, J., Xiang, C., Xu, N., Yang, J., Yang, R., Yin, Z., Yoo, I.-K., Yuldashev, B., Yushmanov, I., Zabołotny, W., Zaitsev, Y., Zamiatin, N. I., Zanevsky, Y., Zhalov, M., Zhang, Y., Zhao, L., Zheng, J., Zheng, S., Zhou, D., Zhou, J., Zhu, X., Zinchenko, A., Zipper, W., Zrelov, M., Zryuev, V., Zumbruch, P., Zyzak, M., Ablyazimov, T., Abuhoza, A., Adak, R. P., Adamczyk, M., Agarwal, K., Aggarwal, M. M., Ahammed, Z., Ahmad, F., Ahmad, N., Ahmad, S., Akindinov, A., Akishin, P., Akishina, E., Akishina, T., Akishina, V., Akram, A., Al-Turany, M., Alekseev, I., Alexandrov, E., Alexandrov, I., Amar-Youcef, S., Anđelić, M., Andreeva, O., Andrei, C., Andronic, A., Anisimov, Y., Appelshäuser, H., Argintaru, D., Atkin, E., Avdeev, S., Averbeck, R., Azmi, M. D., Baban, V., Bach, M., Badura, E., Bähr, S., Balog, T., Balzer, M., Bao, E., Baranova, N., Barczyk, T., Bartoş, D., Bashir, S., Baszczyk, M., Batenkov, O., Baublis, V., Baznat, M., Becker, J., Becker, K.-H., Belogurov, S., Belyakov, D., Bendarouach, J., Berceanu, I., Bercuci, A., Berdnikov, A., Berdnikov, Y., Berendes, R., Berezin, G., Bergmann, C., Bertini, D., Bertini, O., Beşliu, C., Bezshyyko, O., Bhaduri, P. P., Bhasin, A., Bhati, A. K., Bhattacharjee, B., Bhattacharyya, A., Bhattacharyya, T. K., Biswas, S., Blank, T., Blau, D., Blinov, V., Blume, C., Bocharov, Y., Book, J., Breitner, T., Brüning, U., Brzychczyk, J., Bubak, A., Büsching, H., Bus, T., Butuzov, V., Bychkov, A., Byszuk, A., Cai, X., Cálin, M., Cao, P., Caragheorgheopol, G., Carević, I., Cătănescu, V., Chakrabarti, A., Chattopadhyay, S., Chaus, A., Chen, H., Chen, L., Chen, J., Chepurnov, V., Cherif, H., Chernogorov, A., Ciobanu, M. I., Claus, G., Constantin, F., Csanád, M., D'Ascenzo, N., Das, S., Cuveland, J., Debnath, B., Dementiev, D., Deng, W., Deng, C., Deppe, H., Deppner, I., Derenovskaya, O., Deveaux, C. A., Deveaux, M., Dey, K., Dey, M., Dillenseger, P., Dobyrn, V., Doering, D., Dong, S., Dorokhov, A., Dreschmann, M., Drozd, A., Dubey, A. K., Dubnichka, S., Dubnichkova, Z., Dürr, M., Dutka, L., Dželalija, M., Elsha, V. V., Emschermann, D., Engel, H., Eremin, V., Eşanu, T., Eschke, J., Eschweiler, D., Fan, H., Fan, X., Farooq, M., Fateev, O., Feng, S., Figuli, S. P. D., Filozova, I., Finogeev, D., Fischer, P., Flemming, H., Förtsch, J., Frankenfeld, U., Friese, V., Friske, E., Fröhlich, I., Frühauf, J., Gajda, J., Galatyuk, T., Gangopadhyay, G., García Chávez, C., Gebelein, J., Ghosh, P., Ghosh, S. K., Gläßel, S., Goffe, M., Golinka-Bezshyyko, L., Golovatyuk, V., Golovnya, S., Golovtsov, V., Golubeva, M., Golubkov, D., Gómez Ramírez, A., Gorbunov, S., Gorokhov, S., Gottschalk, D., Gryboś, P., Grzeszczuk, A., Guber, F., Gudima, K., Gumiński, M., Gupta, A., Gusakov, Y., Han, D., Hartmann, H., He, S., Hehner, J., Heine, N., Herghelegiu, A., Herrmann, N., Heß, B., Heuser, J. M., Himmi, A., Höhne, C., Holzmann, R., Hu, D., Huang, G., Huang, X., Hutter, D., Ierusalimov, A., Ilgenfritz, E.-M., Irfan, M., Ivanischev, D., Ivanov, M., Ivanov, P., Ivanov, V., Ivashkin, A., Jaaskelainen, K., Jahan, H., Jain, V., Jakovlev, V., Janson, T., Jiang, D., Jipa, A., Kadenko, I., Kähler, P., Kämpfer, B., Kalinin, V., Kallunkathariyil, J., Kampert, K.-H., Kaptur, E., Karabowicz, R., Karavichev, O., Karavicheva, T., Karmanov, D., Karnaukhov, V., Karpechev, E., Kasiński, K., Kasprowicz, G., Kaur, M., Kazantsev, A., Kebschull, U., Kekelidze, G., Khan, M. M., Khan, S. A., Khanzadeev, A., Khasanov, F., Khvorostukhin, A., Kirakosyan, V., Kirejczyk, M., Kiryakov, A., Kiš, M., Kisel, I., Kisel, P., Kiselev, S., Kiss, T., Klaus, P., Kłeczek, R., Klein-Bösing, C., Kleipa, V., Klochkov, V., Kmon, P., Koch, K., Kochenda, L., Koczoń, P., Koenig, W., Kohn, M., Kolb, B. W., Kolosova, A., Komkov, B., Korolev, M., Korolko, I., Kotte, R., Kovalchuk, A., Kowalski, S., Koziel, M., Kozlov, G., Kozlov, V., Kramarenko, V., Kravtsov, P., Krebs, E., Kreidl, C., Kres, I., Kresan, D., Kretschmar, G., Krieger, M., Kryanev, A. V., Kryshen, E., Kuc, M., Kucewicz, W., Kucher, V., Kudin, L., Kugler, A., Kumar, A., Kumar, L., Kunkel, J., Kurepin, A., Kurepin, N., Kurilkin, A., Kurilkin, P., Kushpil, V., Kuznetsov, S., Kyva, V., Ladygin, V., Lara, C., Larionov, P., Laso García, A., Lavrik, E., Lazanu, I., Lebedev, A., Lebedev, S., Lebedeva, E., Lehnert, J., Lehrbach, J., Leifels, Y., Lemke, F., Li, C., Li, Q., Li, X., Li, Y., Lindenstruth, V., Linnik, B., Liu, F., Lobanov, I., Lobanova, E., Löchner, S., Loizeau, P.-A., Lone, S. A., Lucio Martínez, J. A., Luo, X., Lymanets, A., Lyu, P., Maevskaya, A., Mahajan, S., Mahapatra, D. P., Mahmoud, T., Maj, P., Majka, Z., Malakhov, A., Malankin, E., Malkevich, D., Malyatina, O., Malygina, H., Mandal, M. M., Mandal, S., Manko, V., Manz, S., Marin Garcia, A. M., Markert, J., Masciocchi, S., Matulewicz, T., Meder, L., Merkin, M., Mialkovski, V., Michel, J., Miftakhov, N., Mik, L., Mikhailov, K., Mikhaylov, V., Milanović, B., Militsija, V., Miskowiec, D., Momot, I., Morhardt, T., Morozov, S., Müller, W. F. J., Müntz, C., Mukherjee, S., Muńoz Castillo, C. E., Murin, Y., Najman, R., Nandi, C., Nandy, E., Naumann, L., Nayak, T., Nedosekin, A., Negi, V. S., Niebur, W., Nikulin, V., Normanov, D., Oancea, A., Oh, K., Onishchuk, Y., Ososkov, G., Otfinowski, P., Ovcharenko, E., Pal, S., Panasenko, I., Panda, N. R., Parzhitskiy, S., Patel, V., Pauly, C., Penschuck, M., Peshekhonov, D., Peshekhonov, V., Petráček, V., Petri, M., Petriş, M., Petrovici, A., Petrovici, M., Petrovskiy, A., Petukhov, O., Pfeifer, D., Piasecki, K., Pieper, J., Pietraszko, J., Płaneta, R., Plotnikov, V., Plujko, V., Pluta, J., Pop, A., Pospisil, V., Poźniak, K., Prakash, A., Prasad, S. K., Prokudin, M., Pshenichnov, I., Pugach, M., Pugatch, V., Querchfeld, S., Rabtsun, S., Radulescu, L., Raha, S., Rami, F., Raniwala, R., Raniwala, S., Raportirenko, A., Rautenberg, J., Rauza, J., Ray, R., Razin, S., Reichelt, P., Reinecke, S., Reinefeld, A., Reshetin, A., Ristea, C., Ristea, O., Rodriguez Rodriguez, A., Roether, F., Romaniuk, R., Rost, A., Rostchin, E., Rostovtseva, I., Roy, A., Rożynek, J., Ryabov, Y., Sadovsky, A., Sahoo, R., Sahu, P. K., Sahu, S. K., Saini, J., Samanta, S., Sambyal, S. S., Samsonov, V., Sánchez Rosado, J., Sander, O., Sarangi, S., Satława, T., Sau, S., Saveliev, V., Schatral, S., Schiaua, C., Schintke, F., Schmidt, C. J., Schmidt, H. R., Schmidt, K., Scholten, J., Schweda, K., Seck, F., Seddiki, S., Selyuzhenkov, I., Semennikov, A., Senger, A., Senger, P., Shabanov, A., Shabunov, A., Shao, M., Sheremetiev, A. D., Shi, S., Shumeiko, N., Shumikhin, V., Sibiryak, I., Sikora, B., Simakov, A., Simon, C., Simons, C., Singaraju, R. N., Singh, A. K., Singh, B. K., Singh, C. P., Singhal, V., Singla, M., Sitzmann, P., Siwek-Wilczyńska, K., Skwira-Chalot, I., Som, I., Song, G., Song, J., Sosin, Z., Soyk, D., Staszel, P., Strikhanov, M., Strohauer, S., Stroth, J., Sturm, C., Sultanov, R., Sun, Y., Svirida, D., Svoboda, O., Szabó, A., Szczygieł, R., Talukdar, R., Tang, Z., Tanha, M., Tarasiuk, J., Tarassenkova, O., Târzilă, M.-G., Teklishyn, M., Tischler, T., Tlustý, P., Tölyhi, T., Toia, A., Topil'Skaya, N., Träger, M., Tripathy, S., Tsakov, I., Tsyupa, Y., Turowiecki, A., Tuturas, N. G., Uhlig, F., Usenko, E., Valin, I., Varga, D., Vassiliev, I., Vasylyev, O., Verbitskaya, E., Verhoeven, W., Veshikov, A., Visinka, R., Viyogi, Y. P., Volkov, S., Volochniuk, A., Vorobiev, A., Voronin, A., Vovchenko, V., Vznuzdaev, M., Wang, D., Wang, X.-W., Wang, Y., Weber, M., Wendisch, C., Wessels, J. P., Wiebusch, M., Wiechula, J., Wielanek, D., Wieloch, A., Wilms, A., Winckler, N., Winter, M., Wiśniewski, K., Wolf, G., Won, S., Wu, K.-J., Wüstenfeld, J., Xiang, C., Xu, N., Yang, J., Yang, R., Yin, Z., Yoo, I.-K., Yuldashev, B., Yushmanov, I., Zabołotny, W., Zaitsev, Y., Zamiatin, N. I., Zanevsky, Y., Zhalov, M., Zhang, Y., Zhao, L., Zheng, J., Zheng, S., Zhou, D., Zhou, J., Zhu, X., Zinchenko, A., Zipper, W., Zrelov, M., Zryuev, V., Zumbruch, P., and Zyzak, M.
Abstract: Substantial experimental and theoretical efforts worldwide are devoted to explore the phase diagram of strongly interacting matter. At LHC and top RHIC energies, QCD matter is studied at very high temperatures and nearly vanishing net-baryon densities. There is evidence that a Quark-Gluon-Plasma (QGP) was created at experiments at RHIC and LHC. The transition from the QGP back to the hadron gas is found to be a smooth cross over. For larger net-baryon densities and lower temperatures, it is expected that the QCD phase diagram exhibits a rich structure, such as a first-order phase transition between hadronic and partonic matter which terminates in a critical point, or exotic phases like quarkyonic matter. The discovery of these landmarks would be a breakthrough in our understanding of the strong interaction and is therefore in the focus of various high-energy heavy-ion research programs. The Compressed Baryonic Matter (CBM) experiment at FAIR will play a unique role in the exploration of the QCD phase diagram in the region of high net-baryon densities, because it is designed to run at unprecedented interaction rates. High-rate operation is the key prerequisite for high-precision measurements of multi-differential observables and of rare diagnostic probes which are sensitive to the dense phase of the nuclear fireball. The goal of the CBM experiment at SIS100 (sqrt(s_NN) = 2.7 - 4.9 GeV) is to discover fundamental properties of QCD matter: the phase structure at large baryon-chemical potentials (mu_B > 500 MeV), effects of chiral symmetry, and the equation-of-state at high density as it is expected to occur in the core of neutron stars. In this article, we review the motivation for and the physics programme of CBM, including activities before the start of data taking in 2022, in the context of the worldwide efforts to explore high-density QCD matter.
Published: 2017

40. Production of $ \eta$ and 3$ \pi$ mesons in the pd $ \rightarrow$ 3HeX reaction at 1360 and 1450 MeV

Author: Andrzej Kupsc, H. Clement, P.-E. Tegnér, R. Shafigullin, G. J. Wagner, V. Sopov, L. Demiroers, F. Kren, C. Pauly, I. Zartova, C. Ekstroem, Marek Jacewicz, B. Morosov, G. Ivanov, T. Johansson, W. Oelert, Magnus Wolke, K. Fransson, K. Schoenning, A. Povtorejko, Pawel Marciniewski, B. Shwartz, J. Stepaniak, V. Tikhomirov, A. Kuzmin, K. Lindberg, A. Turowiecki, E. Jiganov, Chr. Bargholtz, J. Zabierowski, M. Bashkanov, D. Bogoslawsky, Y. Petukhov, B. Hoeistad, Jozef Zlomanczuk, S. Kullander, M. Berłowski, T. Skorodko, Hans Calén, P. Thoerngren Engblom, L. Geren, Wolfgang Scobel, H. Petrén, S. Keleta, O. Khakimova, and Leif Gustafsson
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, media_common.quotation_subject, Eta meson, Kinetic energy, Asymmetry, Nuclear physics, Amplitude, Isospin, ddc:530, Invariant mass, Nucleon, media_common
Abstract: The cross sections of the pd -> 3He eta, pd -> 3He pi0 pi0 pi0 and pd -> 3He pi+ pi- pi0 reactions have been measured at beam kinetic energies T_p= 1360 MeV and T_p= 1450 MeV using the CELSIUS/WASA detector setup. At both energies, the differential cross section dsigma/dOmega of the eta meson in the pd -> 3He eta reaction shows a strong forward-backward asymmetry in the CMS. The ratio between the pd -> 3He pi+ pi- pi0 and the pd -> 3He pi0 pi0 pi0 cross sections has been analysed in terms of isospin amplitudes. The reconstructed invariant mass distributions of the pi-pi, 3He-pi and 3He-2pi systems provide hints on the role of nucleon resonances in the 3pi production process.
Published: 2010

41. The pd→He3ηπ0 reaction at Tp=1450 MeV

Author: Leif Gustafsson, F. Kren, A. Kuzmin, Tord Johansson, G. Ivanov, A. Povtorejko, M. Bashkanov, H. Petren, J. Zabierowski, Marek Jacewicz, W. Oelert, Karin Schönning, B. Shwartz, Y. Petukhov, M. Berłowski, Pia Thörngren Engblom, D. Bogoslawsky, P.-E. Tegnér, I. Zartova, V. Tikhomirov, T. Skorodko, A. Turowiecki, C. Pauly, K. Fransson, L. Demiroers, Magnus Wolke, R. Shafigullin, G. J. Wagner, C. Ekström, Hans Calén, Andrzej Kupsc, S. Kullander, P. Marciniewski, H. Clement, L. Geren, J. Zlomanczuk, S. Keleta, Bo Höistad, Wolfgang Scobel, V. Sopov, B. Morosov, C. Wilkin, C. Bargholtz, K. Lindberg, E. Jiganov, J. Stepaniak, and O. Khakimova
Subjects: Nuclear physics, Physics, Momentum, Nuclear and High Energy Physics, Photon, Meson, Isobar, Resonance, Invariant mass, Atomic physics, Nuclear Experiment, Phi meson, Storage ring
Abstract: The cross section for the pd -> He-3 eta pi(0) reaction has been measured at a beam energy of 1450 MeV using the WASA detector at the CELSIUS storage ring. The He-3 was detected in coincidence with four photons from the decays of the two mesons. The data indicate that the production mechanism involves the formation of the Delta(1232) isobar. Although the beam energy does not allow the full peak of this resonance to be seen, the invariant mass distributions Of all three pairs of final particles are well reproduced by a phase space Monte Carlo simulation weighted with the p-wave factor of the square of the pi(0) momentum in the He-3 pi(0) system.
Published: 2010

42. The pd→He3ηπ0 reaction at Tp=1450 MeV

Author: Schönning, K., Bargholtz, Chr., Bashkanov, M., Berłowski, M., Bogoslawsky, D., Calén, H., Clement, H., Demirörs, L., Ekström, C., Fransson, K., Gerén, L., Gustafsson, L., Höistad, B., Ivanov, G., Jacewicz, M., Jiganov, E., Johansson, T., Keleta, S., Khakimova, O., Kren, F., Kullander, S., Kupść, A., Kuzmin, A., Lindberg, K., Marciniewski, P., Morosov, B., Oelert, W., Pauly, C., Petrén, H., Petukhov, Y., Povtorejko, A., Scobel, W., Shafigullin, R., Shwartz, B., Skorodko, T., Sopov, V., Stepaniak, J., Tegnér, P.-E., Thörngren Engblom, P., Tikhomirov, V., Turowiecki, A., Wagner, G.J., Wilkin, C., Wolke, M., Zabierowski, J., Zartova, I., and Złomańczuk, J.
Subjects: Nuclear and High Energy Physics
Published: 2010
Full Text: View/download PDF

43. Exclusive measurement of two-pion production in the reaction

Author: P. Thörngren Engblom, Roger Ruber, P.-E. Tegnér, K. Lindberg, B. Morosov, A. Povtorejko, M. Bashkanov, R. Shafigullin, G. J. Wagner, E. Jiganov, H. Clement, Y. Petukhov, Colin Wilkin, S. Keleta, Karin Schönning, A. Kupść, M. Wolke, Hans Calén, B. Shwartz, J. Stepaniak, C. Pauly, A. Kuzmin, Kjell Fransson, G. Ivanov, A. Turowiecki, Jozef Zlomanczuk, Wolfgang Scobel, Marek Jacewicz, L. Demirörs, V. Sopov, W. Oelert, F. Kren, C. Ekström, L. Geren, O. Khakimova, A. Pricking, M. Berłowski, H. Petrén, T. Skorodko, S. Kullander, Bo Höistad, Leif Gustafsson, I. Zartova, D. Bogoslawsky, Pawel Marciniewski, V. Tikhomirov, Chr. Bargholtz, J. Zabierowski, and T. Johansson
Subjects: Nuclear reaction, Nuclear physics, Physics, Nuclear and High Energy Physics, Pion, Isospin, Pi
Abstract: The results from the first kinematically complete measurement of the reaction are reported. The aim was to investigate a long standing puzzle regarding the origin of the peculiar ππ-invariant mass ...
Published: 2009

44. ISOSPIN DECOMPOSITION OF pp → NNππ CROSS SECTIONS — DO WE SEE A SIGN OF Δ(1600) EXCITATION IN THE nnπ+π+ CHANNEL?

Author: Andrzej Kupsc, Pawel Marciniewski, V. Tikhomirov, Henrik Petterson, P. Thörngren-Engblom, A. A. Kuznetsov, Sven Kullander, E. Jiganov, Karin Schönning, H. Clement, A. Povtorejko, A. Turowiecki, M. Wolke, Hans Calén, B. Morosov, Jozef Zlomanczuk, M. Bashkanov, Kjell Fransson, B. Shwartz, J. Stepaniak, Bo Höistad, G. Ivanov, Y. Petukhov, J. Zabierowski, G. J. Wagner, Wolfgang Scobel, Tord Johansson, Curt Ekstrom, R. Meier, V. Sopov, F. Kren, Marek Jacewicz, C. Pauly, S. Keleta, D. Bogoslowsky, Akira Yamamoto, Roger Ruber, T. Skorodko, I. Koch, O. Khakimova, and Leif Gustafsson
Subjects: Delta, Physics, Nuclear and High Energy Physics, Particle physics, Astronomy and Astrophysics, Decomposition, Resonance (particle physics), Atomic and Molecular Physics, and Optics, Nuclear physics, Cross section (geometry), Isospin, Pi, Excitation, Sign (mathematics)
Abstract: The two-pion production in pp-collisions has been investigated in exclusive measurements from threshold up to Tp = 1.36 GeV . Total and differential cross sections have been obtained for the channels pnπ+π0, ppπ+π-, ppπ0π0 and also nnπ+π+. For intermediate incident energies Tp > 1 GeV , i.e. in the region, which is beyond the Roper excitation but at the onset of ΔΔ excitation the total ppπ0π0 cross section falls behind theoretical predictions by as much as an order of magnitude near 1.2 GeV, whereas the nnπ+π+ cross section is a factor of five larger than predicted. A model-unconstrained isospin decompostion of the cross section points to a significant contribution of an isospin 3/2 resonance other than the Δ(1232). As a possible candidate the Δ(1600) is discussed.
Published: 2009

45. Polarisation of the ω meson in the pd→He3ω reaction at 1360 and 1450 MeV

Author: P. Thörngren Engblom, A. Kupść, A. Povtorejko, S. Keleta, Bo Höistad, J. Stepaniak, Wolfgang Scobel, G. Ivanov, R. J. M. Y. Ruber, A. Kuzmin, K. Fransson, K. Lindberg, P.-E. Tegnér, Leif Gustafsson, Hans Calén, Marek Jacewicz, Magnus Wolke, P. Marciniewski, W. Oelert, H. Pettersson, S. Kullander, M. Bashkanov, Chr. Bargholtz, B. Shwartz, D. Bogoslawsky, Jozef Zlomanczuk, L. Demirörs, A. Turowiecki, F. Kren, J. Zabierowski, R. Shafigullin, G. J. Wagner, K. Schönning, T. Skorodko, Y. Petukhov, I. Zartova, C. Wilkin, C. Pauly, C. Ekström, V. Tikhomirov, L. Geren, O. Khakimova, H. Clement, T. Johansson, I. Koch, E. Jiganov, B. Morosov, M. Berlowski, and V. Sopov
Subjects: Physics, Nuclear and High Energy Physics, Meson production, Meson, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Coincidence, Nuclear physics, Near threshold, Low energy, OZI rule, High Energy Physics::Experiment, Tensor, Nuclear Experiment
Abstract: The tensor polarisation of ω mesons produced in the p d → He 3 ω reaction has been studied at two energies near threshold. The He 3 nuclei were detected in coincidence with the π 0 π + π − or π 0 γ decay products of the ω . In contrast to the case of ϕ -meson production, the ω mesons are found to be unpolarised. This brings into question the applicability of the Okubo–Zweig–Iizuka rule when comparing the production of vector mesons in low energy hadronic reactions.
Published: 2008

46. The pp→ppπππ reaction channels in the threshold region

Author: Marek Jacewicz, Leif Gustafsson, J. Zabierowski, Pia Thörngren Engblom, W. Oelert, G. Ivanov, B. Morosov, Jozef Zlomanczuk, Roger Ruber, Hans Calén, M. Bashkanov, B. Shwartz, J. Stepaniak, Wolfgang Scobel, I. Koch, C. Pauly, Magnus Wolke, Kjell Fransson, R. Meier, Curt Ekstrom, Pawel Marciniewski, V. Tchernyshev, Filippo Capellaro, V. Tikhomirov, Karin Schönning, Henrik Pettersson, E. Jiganov, A. Turowiecki, G. J. Wagner, Y. Petukhov, D. Bogoslawsky, H. Clement, V. Sopov, Bo Höistad, Andrzej Kupsc, Tord Johansson, Akira Yamamoto, S. Keleta, T. Skorodko, Sven Kullander, A. Povtorejko, A. A. Kuznetsov, and Ulrich Wiedner
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Cross section (physics), Range (particle radiation), Meson production, Pion, Isobar, Intermediate state, Atomic physics
Abstract: The cross section for direct neutral and charged three pion production in pp interactions was measured at excess energies in the range 160–216 MeV. That comprises the first measurement of the pp→ppπ0π0π0 reaction and the direct comparison with the pp→ppπ+π−π0 process. The experiment was performed above the η meson production threshold and the cross section could be directly normalized to the cross section of the pp→ppη reaction, with the η decaying into 3 pions. Since the same final states are selected, the measurement has a low systematical error. The measured cross section ratio σ(pp→ppπ+π−π0)/σ(pp→ppπ0π0π0) is compared to predictions of dominance of different isobars in the intermediate state.
Published: 2007

47. The pp→ppπππ reaction channels in the threshold region

Author: Pauly, C., Jacewicz, M., Koch, I., Bashkanov, M., Bogoslawsky, D., Calén, H., Capellaro, F., Clement, H., Demirörs, L., Ekström, C., Fransson, K., Gustafsson, L., Höistad, B., Ivanov, G., Jiganov, E., Johansson, T., Keleta, S., Kullander, S., Kupść, A., Kuznetsov, A., Marciniewski, P., Meier, R., Morosov, B., Oelert, W., Petukhov, Y., Pettersson, H., Povtorejko, A., Ruber, R.J.M.Y., Schönning, K., Scobel, W., Skorodko, T., Shwartz, B., Sopov, V., Stepaniak, J., Tchernyshev, V., Thörngren Engblom, P., Tikhomirov, V., Turowiecki, A., Wagner, G.J., Wiedner, U., Wolke, M., Yamamoto, A., Zabierowski, J., and Złomańczuk, J.
Subjects: Nuclear and High Energy Physics
Published: 2007
Full Text: View/download PDF

48. OBSERVATION OF THE ABC EFFECT IN THE FIRST EXCLUSIVE MEASUREMENTS OF pn → dπ0π0

Author: Magnus Wolke, J. Stepaniak, Akira Yamamoto, R. Meier, Pawel Marciniewski, V. Tikhomirov, G. Ivanov, A. Povtoreyko, T. Skorodko, B. Morosov, Hans Calén, J. Zabierowski, P.-E. Tegnér, C. Bargholtz, S. Keleta, A. A. Kuznetsov, C. Ekström, F. Cappellaro, S. Kullander, B. Shwartz, Murat M. Kaskulov, M. Bashkanov, A. Kupść, K. Lindberg, I. Zartova, K. Fransson, A. Schwick, Marek Jacewicz, R. J. M. Y. Ruber, E. Jiganov, H. Clement, Bo Höistad, D. Bogoslowsky, I. Koch, Wolfgang Scobel, O. Khakimova, P. Thörngren-Engblom, Jozef Zlomanczuk, Leif Gustafsson, V. Sopov, V. Tchernyshev, F. Kren, A. Turowiecki, Y. Petukhov, W. Oelert, L. Geren, T. Johansson, C. Pauly, R. Shafigullin, and G. J. Wagner
Subjects: Physics, Nuclear and High Energy Physics, Complete data, Quantum mechanics, Spectrum (functional analysis), Bound state, Theoretical models, Prove it, Astronomy and Astrophysics, Invariant mass, Atomic physics, Atomic and Molecular Physics, and Optics, Excitation
Abstract: The reaction pn → dπ0π0 constitutes the most fundamental system for the study of the ABC effect - a puzzling threshold enhancement in the ππ invariant mass spectrum of the ππ system in double-pionic fusion to nuclear bound states. The first exclusive measurements of this reaction have now been carried out at CELSIUS-WASA. They exhibit a striking low-mass enhancement in the ππ invariant mass spectrum, prove it to be a σ-channel phenomenon and falsify conventional theoretical models, which predict an associated high-mass enhancement not present in the new exclusive data. In the kinematically complete data sample we observe a ΔΔ excitation, where the interaction between the two Δ obviously plays a crucial role for the generation of the ππ low-mass enhancement.
Published: 2007

49. ππ PRODUCTION IN PROTON-PROTON COLLISIONS

Author: M. Bashkanov, F. Cappellaro, L. Demiroers, D. Bogoslowsky, Jozef Zlomanczuk, V. Tchernyshev, W. Oelert, Akira Yamamoto, B. Morosov, A. Kupść, Pawel Marciniewski, T. Johansson, C. Ekström, A. A. Kuznetsov, A. Turowiecki, K. Fransson, C. Pauly, V. Tikhomirov, B. Shwartz, R. Shafigullin, G. J. Wagner, A. Schwick, Marek Jacewicz, A. Povtorejko, E. Jiganov, H. Clement, P. Thörngren-Engblom, J. Greiff, Hans Calén, Y. Petukhov, M. Kaskulov, O. Khakimova, V. Sopov, F. Kren, R. Meier, S. Kullander, I. Koch, G. Ivanov, Magnus Wolke, Leif Gustafsson, R. J. M. Y. Ruber, J. Stepaniak, Bo Höistad, J. Zabierowski, S. Keleta, W. Scobel, and T. Skorodko
Subjects: Physics, Nuclear and High Energy Physics, Fusion, Complete data, Range (particle radiation), Proton, Excited state, Astronomy and Astrophysics, Invariant mass, Production (computer science), Atomic physics, Atomic and Molecular Physics, and Optics, Excitation
Abstract: At CELSIUS-WASA the two-pion production in proton-proton collisisons has been measured exclusively from threshold up to the energy regime, where both of the collision partners are expected to be excited to the Δ state. The measurements constitute the first kinematically complete data samples of solid statistics in this energy range. Most of the data have been obtained for the π+π- and π0π0channels. Whereas at near-threshold energies the differential distributions can be succesfully explained by chiral dynamics and Roper excitation, respectively, the data for the π+π- channel in the ΔΔ region can be described only, if the special configuration (ΔΔ)0+ is assumed. The data for the π0π0 channel moreover exhibit a low-mass enhancement in the π0π0 invariant mass spectrum, which is reminiscent of the ABC-effect found in double-pionic fusion to light nuclei.
Published: 2007

50. LOW-MASS ππ ENHANCEMENT IN BARYONIC ππ PRODUCTION: ABC EFFECT REVISED BY EXCLUSIVE MEASUREMENTS

Author: C. Ekström, R. J. M. Y. Ruber, Magnus Wolke, J. Stepaniak, G. Ivanov, B. Morosov, I. Zartova, P. Thörngren-Engblom, W. Scobel, B. Shwartz, R. Shafigullin, G. J. Wagner, Y. Petukhov, Jozef Zlomanczuk, L. Geren, D. Bogoslowsky, S. Kullander, A. A. Kuznetsov, V. Tchernyshev, W. Oelert, M. Bashkanov, F. Cappellaro, C. Bargholtz, Pawel Marciniewski, A. Povtoreyko, O. Khakimova, E. Jiganov, H. Clement, A. Turowiecki, Leif Gustafsson, Hans Calén, V. Tikhomirov, T. Johansson, Akira Yamamoto, A. Kupść, K. Fransson, T. Skorodko, C. Pauly, A. Schwick, Marek Jacewicz, K. Lindberg, P.-E. Tegnér, R. Meier, I. Koch, Bo Höistad, M. Kaskulov, J. Zabierowski, S. Keleta, V. Sopov, and F. Kren
Subjects: Baryon, Physics, Nuclear physics, Nuclear and High Energy Physics, Complete data, Bound state, Prove it, Astronomy and Astrophysics, Production (computer science), Invariant mass, Low Mass, Atomic and Molecular Physics, and Optics, Spectral line
Abstract: The ABC effect - a puzzling threshold enhancement in the ππ invariant mass spectrum of double-pionic fusion to nuclear bound states - has been investigated since 40 years by inclusive measurements without providing a conclusive interpretation. First exclusive measurements to this topic have now been carried out at CELSIUS-WASA. They confirm a huge ππ threshold enhancement, prove it to be of scalar-isoscalar nature, i.e., a σ-channel phenomenon and reveal the theoretically predicted high-mass enhancement in inclusive spectra to be of πππ rather than of ππ nature - falsifying thus corresponding model predictions for the ABC effect. From the kinematically complete data samples we infer that the interaction between the two Δ particles created in this process is of crucial importance.
Published: 2007

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