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3. Semi-explicit integration of second order for weakly coupled poroelasticity

Author

Altmann, R., Maier, R., and Unger, B.

Subjects
Mathematics - Numerical Analysis
Abstract

We introduce a semi-explicit time-stepping scheme of second order for linear poroelasticity satisfying a weak coupling condition. Here, semi-explicit means that the system, which needs to be solved in each step, decouples and hence improves the computational efficiency. The construction and the convergence proof are based on the connection to a differential equation with two time delays, namely one and two times the step size. Numerical experiments confirm the theoretical results and indicate the applicability to higher-order schemes.

Published
2022

5. Search for the $\eta$ mesic $^3$He in the $pd\rightarrow d p \pi^{0}$ reaction with the WASA-at-COSY facility

Author

Adlarson, P., Augustyniak, W., Bashkanov, M., Bass, S. D., Bergmann, F. S., Berlowski, M., Bondar, A., Buscher, M., Calen, H., Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Fohl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Heijkenskjold, L., Hejny, V., Husken, N., Hirenzaki, S., Johansson, T., Kamys, B., Kelkar, N. G., Kemmerling, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, P., Kupsc, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Marianski, B., Morsch, H. -P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Ritman, J., Roy, A., Rundel, O., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Shwartz, B., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroher, H., Szczurek, A., Wolke, M., Wronska, A., Wustner, P., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, J., and Zurek, M.

Subjects
Nuclear Experiment
Abstract

The excitation function for the $pd\rightarrow$ $d p \pi^{0}$ reaction has been measured by WASA-at-COSY experiment with the aim of searching for $^{3}\hspace{-0.03cm}\mbox{He}$-$\eta$ mesic nuclei. The measurement in the vicinity of $\eta$ meson production was performed using a ramped proton beam. The data analysis and interpretation was carried out with the assumption that the $\eta$-mesic Helium decays via the formation of an intermediate N$^{*}$(1535) resonance. No direct signal of the $\eta$-mesic nucleus is observed in the excitation function. We determine a new improved upper limit for the total cross section for the bound state production and decay in the $pd\rightarrow$ $(^{3}\hspace{-0.03cm}\mbox{He}$-$\eta)_{bound} \rightarrow$ $d p \pi^{0}$ process. It varies between 13 nb to 24 nb for the bound state with width in the range $\Gamma \in (5,50)$ MeV.

Published
2020
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6. Differential Cross Sections for Neutron-Proton Scattering in the Region of the $d^*(2380)$ Dibaryon Resonance

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Büscher, M., Calén, H., Ciepał, I., Clement, H., Coderre, D., Czerwiński, E., Demmich, K., Doroshkevich, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goslawski, P., Goswami, A., Grigoryev, K., Gullström, C. --O., Hauenstein, F., Heijkenskjöld, L., Hejny, V., Hodana, M., Höistad, B., Hüsken, N., Jany, A., Jany, B. R., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khoukaz, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krapp, M., Krzemień, W., Kulessa, P., Kupść, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Mikirtychiants, M., Morsch, H. -P., Moskal, P., Ohm, H., Ozerianska, I., del Rio, E. Perez, Piskunov, N. M., Podkopał, P., Prasuhn, D., Pricking, A., Pysz, K., Pyszniak, A., Redmer, C. F., Ritman, J., Roy, A., Rudy, Z., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Siudak, R., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Täschner, A., Trzciński, A., Varma, R., Wolke, M., Wrońska, A., Wüstner, P., Wurm, P., Yamamoto, A., Yurev, L., Zabierowski, J., Zink, A., Złomańczuk, J., {Ż}uprański, P., {Ż}urek, M., Workman, R. L., Briscoe, W. J., Strakovsky, I. I., and Švarc, A.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

Differential cross sections have been extracted from exclusive and kinematically complete high-statistics measurements of quasifree polarized $\vec{n}p$ scattering performed in the energy region of the $d^*(2380)$ dibaryon resonance covering the the range of beam energies $T_n$ = 0.98 - 1.29 GeV ($\sqrt s$ = 2.32 - 2.44 GeV). The experiment was carried out with the WASA-at-COSY setup having a polarized deuteron beam impinged on the hydrogen pellet target and utilizing the quasifree process $dp \to np + p_{spectator}$. That way the $np$ differential cross section $\sigma(\Theta)$ was measured over a large angular range. The obtained angular distributions complement the corresponding analyzing power $A_y(\Theta)$ measurements published previously. A SAID partial-wave analysis incorporating the new data strengthens the finding of a resonance pole in the coupled $^3D_3 - ^3G_3$ waves.

Published
2020
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7. Fast in situ observation of atomic Feshbach resonances by photoassociative ionization

Author

Eisele, M., Maier, R. A. W., and Zimmermann, C.

Subjects
Physics - Atomic Physics
Abstract

We propose and experimentally investigate a scheme for observing Feshbach resonances in atomic quantum gases in situ and with a high temporal resolution of several ten nanoseconds. The method is based on the detection of molecular ions, which are optically generated from atom pairs at small interatomic distances. As test system we use a standard rubidium gas (87Rb) with well known magnetically tunable Feshbach resonances. The fast speed and the high sensitivity of our detection scheme allows to observe a complete Feshbach resonance within one millisecond and without destroying the gas., Comment: 5 pages, 4 figures

Published
2020
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8. Study of Three-Nucleon Dynamics in the dp breakup collisions using the WASA detector

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buscher, M., Calen, H., Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Fohl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Heijkenskjold, L., Hejny, V., Husken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, P., Kupsc, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Marianski, B., Morsch, H. -P., Moskal, P., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Ritman, J., Roy, A., Rundel, O., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Shwartz, B., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroher, H., Szczurek, A., Trzcinski, A., Wolke, M., Wronska, A., Wustner, P., Yamamoto, A., Zabierowski, J., Zieli, M. J., Zlomanczuk, J., Zupranski, P., Zurek, M., Deltuva, A., Golak, J., Kozela, A., Skibinski, R., Skwira-Chalot, I., and Witala, H.

Subjects
Nuclear Experiment
Abstract

Differential cross section for the 1H(d,pp)n breakup reaction at deuteron beam energy of 340 MeV has been measured with the use of WASA detector at COSY-Juelich. The set of proton-proton coincidences registered at Forward Detector has been analysed on dense grid of kinematic variables, giving in total around 5600 data points. The cross section data are compared to theoretical predictions based on the state-of-the-art nucleon-nucleon potentials, combined with three-nucleon force, Coulomb interaction or carried out in a relativistic regime.

Published
2019
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9. Search for eta mesic 3He with the WASA-at-COSY facility in the pd-> 3He 2gamma and pd-> 3He 6gamma reactions

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bass, S. D., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Heijkenskjöld, L., Hejny, V., Hirenzaki, S., Jarczyk, L., Johansson, T., Kamys, B., Kelkar, N. G., Kemmerling, G., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H. P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Ritman, J., Roy, A., Rundel, O., Sawant, S., Schadmand, S., Schätti--Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Złomańczuk, J., Żuprański, P., and Żurek, M.

Subjects
Nuclear Experiment
Abstract

We report on the experimental search for the bound state of an $\eta$ meson and $^{3}\hspace{-0.03cm}\mbox{He}$ nucleus performed using the WASA-at-COSY detector setup. In order to search for the $\eta$-mesic nucleus decay, the $pd\rightarrow$ $^{3}\hspace{-0.03cm}\mbox{He} 2\gamma$ and $pd\rightarrow$ $^{3}\hspace{-0.03cm}\mbox{He} 6\gamma$ channels have been analysed. These reactions manifest the direct decay of $\eta$ meson bound in $^{3}\hspace{-0.03cm}\mbox{He}$ nucleus. This non-mesonic decay channel has been considered for the first time. When taking into account only statistical errors, the obtained excitation functions reveal a slight indication for a possible bound state signal corresponding to an $^3$He-$\eta$ nucleus width $\Gamma$ above 20 MeV and binding energy $B_s$ between 0 and 15 MeV. However, the determined cross sections are consistent with zero in the range of the systematic uncertainty. Therefore, as final result we estimate only the upper limit for the cross section of the $\eta$-mesic $^{3}\hspace{-0.03cm}\mbox{He}$ nucleus formation followed by the $\eta$ meson decay which varies between $2$ nb and $15$ nb depending on possible bound state parameters., Comment: Article accepted to be published in PLB

Published
2019
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10. PANDA as midrapidity detector for a future HESR Collider at FAIR

Author

Frankfurt, L, Strikman, M, Larionov, A, Lehrach, A, Maier, R, van Hees, H, Spieles, C, Vovchenko, V, and Stoecker, H

Subjects
Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

Exciting new scientific opportunities are presented for the PANDA detector at the High Energy Storage Ring in the redefined p ¯ p (A) collider mode, HESR-C, at the Facility for Antiproton and Ion Research (FAIR) in Europe. The high luminosity, L∼ 10 31 cm- 2 s- 1, and a wide range of intermediate and high energies, sNN up to 30 GeV for p ¯ p (A) collisions will allow to explore a wide range of exciting topics in QCD, including the study of the production of excited open charm and bottom states, nuclear bound states containing heavy (anti)quarks, the interplay of hard and soft physics in the dilepton production, probing short-range correlations in nuclei, and the exploration of the early, complete p ¯ -p- annihilation phase, where an initially pure Yang–Mills gluon plasma is formed.

Published
2020

11. Feasibility Study for an EDM Storage Ring

Author

Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi-Esuain, B., Barion, L., Basile, S., Berz, M., Beyß, M., Böhme, C., Böker, J., Borburgh, J., Carli, C., Ciepał, I., Ciullo, G., Contalbrigo, M., De Conto, J. -M., Dymov, S., Engels, R., Felden, O., Gagoshidze, M., Gaisser, M., Gebel, R., Giese, N., Grigoryev, K., Grzonka, D., Hanraths, T., Hanhart, C., Heberling, D., Hejny, V., Hetzel, J., Hölscher, D., Javakhishvili, O., Kacharava, A., Karanth, S., Käseberg, C., Kamerdzhiev, V., Keshelashvili, I., Koop, I., Kulikov, A., Laihem, K., Lamont, M., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Maier, R., Makino, K., Martin, S., Mchedlishvili, D., Meißner, U. -G., Metreveli, Z., Michaud, J., Müller, F., Nass, A., Natour, G., Nikolaev, N., Nogga, A., Pesce, A., Poncza, V., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Saleev, A., Schott, M., Sefzick, T., Senichev, Y., Shergelashvili, D., Shmakova, V., Siddique, S., Silenko, A., Simon, M., Slim, J., Soltner, H., Stahl, A., Stassen, R., Stephenson, E., Straatmann, H., Ströher, H., Tabidze, M., Tagliente, G., Tahar, M., Talman, R., Uzikov, Yu., Valdau, Yu., Valetov, E., Wagner, T., Weidemann, C., Wilkin, C., Wirzba, A., Wrońska, A., and Wüstner, P.

Subjects
Physics - Accelerator Physics, High Energy Physics - Experiment
Abstract

This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM, $\vec d$) aligned along the particle spin axis. Statistical sensitivities can approach $10^{-29}$~e$\cdot$cm. The challenge will be to reduce systematic errors to similar levels. The ring will be adjusted to preserve the spin polarization, initially parallel to the particle velocity, for times in excess of 15 minutes. Large radial electric fields, acting through the EDM, will rotate the polarization ($\vec d \times\vec E$). The slow rise in the vertical polarization component, detected through scattering from a target, signals the EDM. The project strategy is outlined. It foresees a step-wise plan, starting with ongoing COSY activities that demonstrate technical feasibility. Achievements to date include reduced polarization measurement errors, long horizontal-plane polarization lifetimes, and control of the polarization direction through feedback from the scattering measurements. The project continues with a proof-of-capability measurement (precursor experiment; first direct deuteron EDM measurement), an intermediate prototype ring (proof-of-principle; demonstrator for key technologies), and finally the high precision electric-field storage ring.

Published
2018

12. Backward single-pion production in the $\boldsymbol{pd\rightarrow {}^3\textrm{He}\,\pi^0}$ reaction with WASA-at-COSY

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H. --P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schätti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Złomańczuk, J., Żuprański, P., Żurek, M., and Wilkin, C.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

New data on the production of single neutral pions in the $pd\rightarrow{}^3\textrm{He}\,\pi^0$ reaction are presented. For fifteen proton beam momenta between $p_p=1.60\;\textrm{GeV}/c$ and $p_p=1.74\;\textrm{GeV}/c$, differential cross sections are determined over a large fraction of the backward hemisphere. Since the only previous systematic measurements of single-pion production at these energies were made in collinear kinematics, the present work constitutes a significant extension of the current knowledge on this reaction. Even this far above the production threshold, significant changes are found in the behaviour of the angular distributions over small intervals in beam momentum., Comment: 9 pages, 5 figures, 3 tables submitted to EPJA

Published
2018
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13. Search for $C$ violation in the decay $\eta\rightarrow\pi^0+e^++e^-$ with WASA-at-COSY

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Hanhart, C., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H. -P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schätti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Złomańczuk, J., Żuprański, P., Żurek, M., and Wirzba, A.

Subjects
High Energy Physics - Experiment
Abstract

We report on the investigation of the rare decay $\eta\rightarrow\pi^0+\text{e}^++\text{e}^-$ which is of interest to study both $C$ violation in the electromagnetic interaction and to search for contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum J\"ulich, Germany. In total $3\times10^7$ events of the reaction $\text{p}+\text{d}\rightarrow{^3\text{He}}+\eta$ have been recorded at an excess energy of $Q = 59.8\,\textrm{MeV}$. Based on this data set the $C$ parity violating decay $\eta\rightarrow\pi^0+\gamma^*\rightarrow\pi^0+\textrm{e}^++\textrm{e}^-$ via a single-photon intermediate state has been searched for, resulting in new upper limits of $\Gamma\left(\eta\rightarrow\pi^0+\textrm{e}^++\textrm{e}^-\right)/ \Gamma\left(\eta\rightarrow\pi^++\pi^-+\pi^0\right) < 3.28\times10^{-5}$ and $\Gamma\left(\eta\rightarrow\pi^0+\textrm{e}^++\textrm{e}^-\right)/ \Gamma\left(\eta\rightarrow\textrm{all}\right) < 7.5\times10^{-6}\ (\textrm{CL} = 90\,\%)$, respectively., Comment: 7 pages, 8 figures, submitted to PLB

Published
2018
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14. Total and differential cross sections of $\eta$-production in proton-deuteron fusion for excess energies between $Q_\eta=13\;\text{MeV}$ and $Q_\eta=81\;\text{MeV}$

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Hanhart, C., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H. -P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawanta, S., Schadmand, S., Schätti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Złomańczuk, J., Żuprański, P., Żurek, M., and Wilkin, C.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

New data on both total and differential cross sections of the production of $\eta$ mesons in proton-deuteron fusion to ${}^3\text{He}\,\eta$ in the excess energy region $13.6\;\text{MeV}\leq Q_\eta \leq 80.9\;\text{MeV}$ are presented. These data have been obtained with the WASA-at-COSY detector setup located at the Forschungszentrum J\"ulich, using a proton beam at 15 different beam momenta between $p_p = 1.60\;\text{GeV}/c$ and $p_p = 1.74\;\text{GeV}/c$. While significant structure of the total cross section is observed in the energy region $20\;\text{MeV}\lesssim Q_\eta \lesssim 60\;\text{MeV}$, a previously reported sharp variation around $Q_\eta\approx 50\;\text{MeV}$ cannot be confirmed. Angular distributions show the typical forward-peaking that was reported elsewhere. For the first time, it is possible to study the development of these angular distributions with rising excess energy over a large interval., Comment: 8 pages, 7 figures, preprint submitted to Physics Letters B

Published
2018
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17. The connection between zero chromaticity and long in-plane polarization lifetime in a magnetic storage ring

Author

Guidoboni, G., Stephenson, E. J., Wrońska, A, Bagdasarian, Z., Bsaisou, J., Chekmenev, S., Dymov, S., Eversmann, D., Gaisser, M., Gebel, R., Hejny, V., Hempelmann, N., Hinder, F., Kacharava, A., Keshelashvili, I., Kulessa, P., Lenisa, P., Lehrach, A., Lorentz, B., Maanen, P., Maier, R., Mchedlishvili, D., Mey, S., Nass, A., Pesce, A., Orlov, Y., Pretz, J., Prasuhn, D., Rathmann, F., Rosenthal, M., Saleev, A., Semertzidis, Y. K., Senichev, Y., Shmakova, V., Stockhorst, H., Ströher, H., Talman, R., Thörngren-Engblom, P., Trinkel, F., Valdau, Yu., Weidemann, C., Wüstner, P., and Zyusin, D.

Subjects
Physics - Accelerator Physics, Nuclear Experiment, Physics - Instrumentation and Detectors
Abstract

In this paper, we demonstrate the connection between a magnetic storage ring with additional sextupole fields set so that the x and y chromaticities vanish and the maximizing of the lifetime of in-plane polarization (IPP) for a 0.97-GeV/c deuteron beam. The IPP magnitude was measured by continuously monitoring the down-up scattering asymmetry (sensitive to sideways polarization) in an in-beam, carbon-target polarimeter and unfolding the precession of the IPP due to the magnetic anomaly of the deuteron. The optimum operating conditions for a long IPP lifetime were made by scanning the field of the storage ring sextupole magnet families while observing the rate of IPP loss during storage of the beam. The beam was bunched and electron cooled. The IPP losses appear to arise from the change of the orbit circumference, and consequently the particle speed and spin tune, due to the transverse betatron oscillations of individual particles in the beam. The effects of these changes are canceled by an appropriate sextupole field setting., Comment: 18 pages, 18 figures, prepared for Phys. Rev. Accel. Beams

Published
2017
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18. Spin dependence of {\eta} meson production in proton-proton collisions close to threshold

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bass, S. D., Bergmann, F. S., Berlowski, M., Bondar, A., Buscher, M., Calen, H., Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Fohl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullstrom, C. -O., Heijkenskjold, L., Hejny, V., Husken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, O., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, P., Kupsc, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Marianski, B., Morsch, H. -P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Szczurek, H. Stroher A., Trzcinski, A., Wolke, M., Wronska, A., Wustner, P., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, J., Zupranski, P., and Zurek, M.

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

Taking advantage of the high acceptance and axial symmetry of the WASA-at-COSY detector, and the high degree of the polarized proton beam of COSY, the reaction pp{\to} pp{\eta} has been measured close to threshold to explore the analyzing power Ay. The angular distribution of Ay is determined with the precision improved by more than one order of magnitude with respect to previous results allowing a first accurate comparison with theoretical predictions. The determined analyzing power is consistent with zero for an excess energy of Q = 15 MeV signaling s wave production with no evidence for higher partial waves. At Q = 72 MeV the data reveals strong interference of P s and P p partial waves and cancellation of (P p) and Ss*Sd contributions. These results rule out the presently available theoretical predictions for the production mechanism of the {\eta} meson., Comment: Accepted for publication in Phys. Rev. Lett

Published
2017
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19. Importance of d-wave contributions in the charge symmetry breaking reaction $dd \to {}^4\text{He}\pi^0$

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Hanhart, C., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, O., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H. -P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schätti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Złomańczuk, J., Żuprański, P., and Żurek, M.

Subjects
Nuclear Experiment
Abstract

This letter reports a first quantitative analysis of the contribution of higher partial waves in the charge symmetry breaking reaction $dd \to {}^4\text{He}\pi^0$ using the WASA-at-COSY detector setup at an excess energy of $Q = 60$ MeV. The determined differential cross section can be parametrized as $\text{d}\sigma/\text{d}\Omega = a + b\cos^{2}\theta^*$, where $\theta^*$ is the production angle of the pion in the center-of-mass coordinate system, and the results for the parameters are $a = \left(1.55 \pm 0.46 (\text{stat}) ^{+0.32}_{-0.8} (\text{syst}) \right)$ pb/sr and $b = \left(13.1 \pm 2.1 (\text{stat}) ^{+1.0}_{-2.7} (\text{syst})\right)$ pb/sr. The data are compatible with vanishing p-waves and a sizable d-wave contribution. This finding should strongly constrain the contribution of the $\Delta$ isobar to the $dd \to {}^4\text{He}\pi^0$ reaction and is, therefore, crucial for a quantitative understanding of quark mass effects in nuclear production reactions., Comment: 5 figures

Published
2017
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20. The XENON1T Dark Matter Experiment

Author

XENON Collaboration, Aprile, E., Aalbers, J., Agostini, F., Alfonsi, M., Amaro, F. D., Anthony, M., Antunes, B., Arneodo, F., Balata, M., Barrow, P., Baudis, L., Bauermeister, B., Benabderrahmane, M. L., Berger, T., Breskin, A., Breur, P. A., Brown, A., Brown, E., Bruenner, S., Bruno, G., Budnik, R., Bütikofer, L., Calvén, J., Cardoso, J. M. R., Cervantes, M., Chiarini, A., Cichon, D., Coderre, D., Colijn, A. P., Conrad, J., Corrieri, R., Cussonneau, J. P., Decowski, M. P., de Perio, P., Di Gangi, P., Di Giovanni, A., Diglio, S., Disdier, J. -M., Doets, M., Duchovni, E., Eurin, G., Fei, J., Ferella, A. D., Fieguth, A., Florin, D., Front, D., Fulgione, W., Rosso, A. Gallo, Galloway, M., Gao, F., Garbini, M., Geis, C., Giboni, K. -L., Goetzke, L. W., Grandi, L., Greene, Z., Grignon, C., Hasterok, C., Hogenbirk, E., Huhmann, C., Itay, R., James, A., Kaminsky, B., Kazama, S., Kessler, G., Kish, A., Landsman, H., Lang, R. F., Lellouch, D., Levinson, L., Lin, Q., Lindemann, S., Lindner, M., Lombardi, F., Lopes, J. A. M., Maier, R., Manfredini, A., Maris, I., Undagoitia, T. Marrodán, Masbou, J., Massoli, F. V., Masson, D., Mayani, D., Messina, M., Micheneau, K., Molinario, A., Morå, K., Murra, M., Naganoma, J., Ni, K., Oberlack, U., Orlandi, D., Othegraven, R., Pakarha, P., Parlati, S., Pelssers, B., Persiani, R., Piastra, F., Pienaar, J., Pizzella, V., Piro, M. -C., Plante, G., Priel, N., García, D. Ramírez, Rauch, L., Reichard, S., Reuter, C., Rizzo, A., Rosendahl, S., Rupp, N., Santos, J. M. F. dos, Saldahna, R., Sartorelli, G., Scheibelhut, M., Schindler, S., Schreiner, J., Schumann, M., Lavina, L. Scotto, Selvi, M., Shagin, P., Shockley, E., Silva, M., Simgen, H., Sivers, M. v., Stern, M., Stein, A., Tatananni, D., Tatananni, L., Thers, D., Tiseni, A., Trinchero, G., Tunnell, C., Upole, N., Vargas, M., Wack, O., Walet, R., Wang, H., Wang, Z., Wei, Y., Weinheimer, C., Wittweg, C., Wulf, J., Ye, J., and Zhang, Y.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The XENON1T experiment at the Laboratori Nazionali del Gran Sasso (LNGS) is the first WIMP dark matter detector operating with a liquid xenon target mass above the ton-scale. Out of its 3.2t liquid xenon inventory, 2.0t constitute the active target of the dual-phase time projection chamber. The scintillation and ionization signals from particle interactions are detected with low-background photomultipliers. This article describes the XENON1T instrument and its subsystems as well as strategies to achieve an unprecedented low background level. First results on the detector response and the performance of the subsystems are also presented., Comment: 22 pages, 25 figures

Published
2017
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21. Test Beam Performance Measurements for the Phase I Upgrade of the CMS Pixel Detector

Author

Dragicevic, M., Friedl, M., Hrubec, J., Steininger, H., Gädda, A., Härkönen, J., Lampén, T., Luukka, P., Peltola, T., Tuominen, E., Tuovinen, E., Winkler, A., Eerola, P., Tuuva, T., Baulieu, G., Boudoul, G., Caponetto, L., Combaret, C., Contardo, D., Dupasquier, T., Gallbit, G., Lumb, N., Mirabito, L., Perries, S., Donckt, M. Vander, Viret, S., Bonnin, C., Charles, L., Gross, L., Hosselet, J., Tromson, D., Feld, L., Karpinski, W., Klein, K., Lipinski, M., Pierschel, G., Preuten, M., Rauch, M., Wlochal, M., Aldaya, M., Asawatangtrakuldee, C., Beernaert, K., Bertsche, D., Contreras-Campana, C., Eckerlin, G., Eckstein, D., Eichhorn, T., Gallo, E., Garcia, J. Garay, Hansen, K., Haranko, M., Harb, A., Hauk, J., Keaveney, J., Kalogeropoulos, A., Kleinwort, C., Lohmann, W., Mankel, R., Maser, H., Mittag, G., Muhl, C., Mussgiller, A., Pitzl, D., Reichelt, O., Savitskyi, M., Schütze, P., Sola, V., Spannagel, S., Walsh, R., Zuber, A., Biskop, H., Buhmann, P., Centis-Vignali, M., Garutti, E., Haller, J., Hoffmann, M., Klanner, R., Lapsien, T., Matysek, M., Perieanu, A., Scharf, Ch., Schleper, P., Schmidt, A., Schwandt, J., Sonneveld, J., Steinbrück, G., Vormwald, B., Wellhausen, J., Abbas, M., Amstutz, C., Barvich, T., Barth, Ch., Boegelspacher, F., De Boer, W., Butz, E., Casele, M., Colombo, F., Dierlamm, A., Freund, B., Hartmann, F., Heindl, S., Husemann, U., Kornmeyer, A., Kudella, S., Muller, Th., Simonis, H. J., Steck, P., Weber, M., Weiler, Th., Kiss, T., Siklér, F., Tölyhi, T., Veszprémi, V., Cariola, P., Creanza, D., De Palma, M., De Robertis, G., Fiore, L., Franco, M., Loddo, F., Sala, G., Silvestris, L., Maggi, G., My, S., Selvaggi, G., Albergo, S., Cappello, G., Costa, S., Di Mattia, A., Giordano, F., Potenza, R., Saizu, M. A., Tricomi, A., Tuve, C., Focardi, E., Dinardo, M. E., Fiorendi, S., Gennai, S., Malvezzi, S., Manzoni, R. A., Menasce, D., Moroni, L., Pedrini, D., Azzi, P., Bacchetta, N., Bisello, D., Dall'Osso, M., Pozzobon, N., Tosi, M., Solestizi, L. Alunni, Biasini, M., Bilei, G. M., Cecchi, C., Checcucci, B., Ciangottini, D., Fanò, L., Gentsos, C., Ionica, M., Leonardi, R., Manoni, E., Mantovani, G., Marconi, S., Mariani, V., Menichelli, M., Modak, A., Morozzi, A., Moscatelli, F., Passeri, D., Placidi, P., Postolache, V., Rossi, A., Saha, A., Santocchia, A., Storchi, L., Spiga, D., Androsov, K., Azzurri, P., Bagliesi, G., Basti, A., Boccali, T., Borrello, L., Bosi, F., Castaldi, R., Ceccanti, M., Ciocci, M. A., Dell'Orso, R., Donato, S., Fedi, G., Giassi, A., Grippo, M. T., Ligabue, F., Magazzu, G., Mammini, P., Mariani, F., Mazzoni, E., Messineo, A., Moggi, A., Morsani, F., Palla, F., Palmonari, F., Profeti, A., Raffaelli, F., Ragonesi, A., Rizzi, A., Soldani, A., Spagnolo, P., Tenchini, R., Tonelli, G., Venturi, A., Verdini, P. G., Abbaneo, D., Ahmed, I., Albert, E., Auzinger, G., Berruti, G., Bonnaud, J., Daguin, J., D'Auria, A., Detraz, S., Dondelewski, O., Engegaard, B., Faccio, F., Frank, N., Gill, K., Honma, A., Kornmayer, A., Labaza, A., Manolescu, F., McGill, I., Mersi, S., Michelis, S., Onnela, A., Ostrega, M., Pavis, S., Peisert, A., Pernot, J. -F., Petagna, P., Postema, H., Rapacz, K., Sigaud, C., Tropea, P., Troska, J., Tsirou, A., Vasey, F., Verlaat, B., Vichoudis, P., Zwalinski, L., Bachmair, F., Becker, R., di Calafiori, D., Casal, B., Berger, P., Djambazov, L., Donega, M., Grab, C., Hits, D., Hoss, J., Kasieczka, G., Lustermann, W., Mangano, B., Marionneau, M., del Arbol, P. Martinez Ruiz, Masciovecchio, M., Meinhard, M., Perozzi, L., Roeser, U., Starodumov, A., Tavolaro, V., Wallny, R., Zhu, D., Bösiger, K., Caminada, L., Canelli, F., Chiochia, V., de Cosa, A., Galloni, C., Hreus, T., Kilminster, B., Lange, C., Maier, R., Ngadiuba, J., Pinna, D., Robmann, P., Taroni, S., Yang, Y., Bertl, W., Deiters, K., Erdmann, W., Horisberger, R., Kaestli, H. -C., Kotlinski, D., Langenegger, U., Meier, B., Rohe, T., Streuli, S., Chen, P. -H., Dietz, C., Fiori, F., Grundler, U., Hou, W. -S., Lu, R. -S., Moya, M., Tsai, J. -F., Tzeng, Y. M., Cussans, D., Goldstein, J., Grimes, M., Newbold, D., Hobson, P., Reid, I. D., Bainbridge, R., Dauncey, P., Hall, G., James, T., Magnan, A. -M., Pesaresi, M., Raymond, D. M., Uchida, K., Durkin, T., Harder, K., Shepherd-Themistocleous, C., Chertok, M., Conway, J., Conway, R., Flores, C., Lander, R., Pellett, D., Ricci-Tam, F., Squires, M., Thomson, J., Yohay, R., Burt, K., Ellison, J., Hanson, G., Olmedo, M., Si, W., Yates, B. R., Dominguez, A., Bartek, R., Bentele, B., Cumalat, J. P., Ford, W. T., Jensen, F., Johnson, A., Krohn, M., Leontsinis, S., Mulholland, T., Stenson, K., Wagner, S. R., Apresyan, A., Bolla, G., Burkett, K., Butler, J. N., Canepa, A., Cheung, H. W. K., Christian, D., Cooper, W. E., Deptuch, G., Derylo, G., Gingu, C., Grünendahl, S., Hasegawa, S., Hoff, J., Howell, J., Hrycyk, M., Jindariani, S., Johnson, M., Kahlid, F., Kwan, S., Lei, C. M., Lipton, R., De Sá, R. Lopes, Liu, T., Los, S., Matulik, M., Merkel, P., Nahn, S., Prosser, A., Rivera, R., Schneider, B., Sellberg, G., Shenai, A., Siehl, K., Spiegel, L., Tran, N., Uplegger, L., Voirin, E., Berry, D. R., Chen, X., Ennesser, L., Evdokimov, A., Gerber, C. E., Makauda, S., Mills, C., Gonzalez, I. D. Sandoval, Alimena, J., Antonelli, L. J., Francis, B., Hart, A., Hill, C. S., Parashar, N., Stupak, J., Bortoletto, D., Bubna, M., Hinton, N., Jones, M., Miller, D. H., Shi, X., Baringer, P., Bean, A., Khalil, S., Kropivnitskaya, A., Majumder, D., Schmitz, E., Wilson, G., Ivanov, A., Mendis, R., Mitchell, T., Skhirtladze, N., Taylor, R., Anderson, I., Fehling, D., Gritsan, A., Maksimovic, P., Martin, C., Nash, K., Osherson, M., Swartz, M., Xiao, M., Acosta, J. G., Cremaldi, L. M., Oliveros, S., Perera, L., Summers, D., Bloom, K., Claes, D. R., Fangmeier, C., Suarez, R. Gonzalez, Monroy, J., Siado, J., Bartz, E., Gershtein, Y., Halkiadakis, E., Kyriacou, S., Lath, A., Schnetzer, S., Stone, R., Walker, M., Malik, S., Norberg, S., Vargas, J. E. Ramirez, Alyari, M., Dolen, J., Godshalk, A., Harrington, C., Iashvili, I., Kharchilava, A., Nguyen, D., Parker, A., Rappoccio, S., Roozbahani, B., Alexander, J., Chaves, J., Chu, J., Dittmer, S., McDermott, K., Mirman, N., Rinkevicius, A., Ryd, A., Salvati, E., Skinnari, L., Soffi, L., Tao, Z., Thom, J., Tucker, J., Zientek, M., Akgün, B., Ecklund, K. M., Kilpatrick, M., Nussbaum, T., Zabel, J., D'Angelo, P., Johns, W., and Rose, K.

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

A new pixel detector for the CMS experiment was built in order to cope with the instantaneous luminosities anticipated for the Phase~I Upgrade of the LHC. The new CMS pixel detector provides four-hit tracking with a reduced material budget as well as new cooling and powering schemes. A new front-end readout chip mitigates buffering and bandwidth limitations, and allows operation at low comparator thresholds. In this paper, comprehensive test beam studies are presented, which have been conducted to verify the design and to quantify the performance of the new detector assemblies in terms of tracking efficiency and spatial resolution. Under optimal conditions, the tracking efficiency is $99.95\pm0.05\,\%$, while the intrinsic spatial resolutions are $4.80\pm0.25\,\mu \mathrm{m}$ and $7.99\pm0.21\,\mu \mathrm{m}$ along the $100\,\mu \mathrm{m}$ and $150\,\mu \mathrm{m}$ pixel pitch, respectively. The findings are compared to a detailed Monte Carlo simulation of the pixel detector and good agreement is found.

Published
2017
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22. Isoscalar Single-Pion Production in the Region of Roper and $d^*(2380)$ Resonances

Author

Collaboration, WASA-at-COSY, Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Bondar, A., Büscher, M., Calen, H., Ciepał, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Grigoryev, A. Goswami K., Gullström, C. -O., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, O., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemien, W., Kulessa, P., Kupsc, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Marianski, B., Morsch, H. -P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schätti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzcinski, A., Varma, R., Wolke, M., Wronska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Złomanczuk, J., Zupranski, P., and Zurek, M.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

Exclusive measurements of the quasi-free $pn \to pp\pi^-$ and $pp \to pp\pi^0$ reactions have been performed by means of $pd$ collisions at $T_p$ = 1.2 GeV using the WASA detector setup at COSY. Total and differential cross sections have been obtained covering the energy region $T_p = 0.95 - 1.3$ GeV ($\sqrt s$ = 2.3 - 2.46 GeV), which includes the regions of $\Delta(1232)$, $N^*(1440)$ and $d^*(2380)$ resonance excitations. From these measurements the isoscalar single-pion production has been extracted, for which data existed so far only below $T_p$ = 1 GeV. We observe a substantial increase of this cross section above 1 GeV, which can be related to the Roper resonance $N^*(1440)$, the strength of which shows up isolated from the $\Delta$ resonance in the isoscalar $(N\pi)_{I=0}$ invariant-mass spectrum. No evidence for a decay of the dibaryon resonance $d^*(2380)$ into the isoscalar $(NN\pi)_{I=0}$ channel is found. An upper limit of 90 $\mu$b (90 $\%$ C.L.) corresponding to a branching ratio of 5 $\%$ has been deduced., Comment: erratum: the upper limit for the branching ratio of the decay $d^*(2380) \to (NN\pi)_{I=0}$ is a factor of two smaller than given in the previous version of this article

Published
2017

23. Search for eta-mesic 4He in the dd->3He n pi0 and dd->3He p pi- reactions with the WASA-at-COSY facility

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bhatt, H., Bondar, A., Buescher, 9 M., Calen, H., Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Foehl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullstroem, C. -O., Heijkenskjoeld, L., Hejny, V., Huesken, N., Jarczyk, L., Johansson, T., Kamys, B., Kelkar, N. G., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, O., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, P., Kupsc, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Marianski, B., Morsch, H. -P., Moskal, P., Ohm, H., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schaetti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Varma, R., Wolke, M., Wronska, A., Wuestner, P., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, J., Zupranski, P., and Zurek, M.

Subjects
Nuclear Experiment
Abstract

The search for 4He-eta bound states was performed with the WASA-at-COSY facility via the measurement of the excitation function for the dd->3He n pi0 and dd->3He p pi- processes. The beam momentum was varied continuously between 2.127 GeV/c and 2.422 GeV/c, corresponding to the excess energy for the dd->4He eta reaction ranging from Q=-70 MeV to Q=30 MeV. The luminosity was determined based on the dd->3He n reaction and quasi-free proton-proton scattering via dd->pp n_spectator n_spectator reactions. The excitation functions determined independently for the measured reactions do not reveal a structure which could be interpreted as a narrow mesic nucleus. Therefore, the upper limits of the total cross sections for the bound state production and decay in dd->(4He-eta)_bound->3He n pi0 and dd->(4He-eta)_bound->3He p pi- processes were determined taking into account the isospin relation between both the channels considered. The results of the analysis depend on the assumptions of the N* momentum distribution in the anticipated mesic-4He. Assuming as in the previous works, that this is identical with the distribution of nucleons bound with 20 MeV in 4He, we determined that (for the mesic bound state width in the range from 5 MeV to 50 MeV) the upper limits at 90% confidence level are about 3 nb and about 6 nb for npi0 and ppi- channels, respectively. However, based on the recent theoretical findings of the N*(1535) momentum distribution in the N*-3He nucleus bound by 3.6 MeV, we find that the WASA-at-COSY detector acceptance decreases and hence the corresponding upper limits are 5 nb and 10 nb for npi0 and ppi- channels respectively., Comment: This article will be submitted to JHEP

Published
2016
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24. Measurement of the $\omega \to \pi^+ \pi^- \pi^0$ Dalitz plot distribution

Author

Collaboration, The WASA-at-COSY, Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khatri, G., Khoukaz, A., Khreptak, O., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H. -P., Moskal, P., Ohm, H., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schätti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Varma, R., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Złomańczuk, J., Żuprański, P., Żurek, M., Kubis, B., and Leupold, S.

Subjects
Nuclear Experiment
Abstract

Using the production reactions $pd\to {}^3\mbox{He}\,\omega$ and $pp\to pp\omega$, the Dalitz plot distribution for the $\omega \to \pi^+ \pi^- \pi^0$ decay is studied with the WASA detector at COSY, based on a combined data sample of $ (4.408\pm 0.042) \times 10^4$ events. The Dalitz plot density is parametrised by a product of the $P$-wave phase space and a polynomial expansion in the normalised polar Dalitz plot variables $Z$ and $\phi$. For the first time, a deviation from pure $P$-wave phase space is observed with a significance of $4.1\sigma$. The deviation is parametrised by a linear term $1+2\alpha Z$, with $\alpha$ determined to be $+0.147\pm0.036$, consistent with the expectations of $\rho$-meson-type final-state interactions of the $P$-wave pion pairs., Comment: 8 pages, 7 figures

Published
2016
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25. Search for an Isospin I =3 Dibaryon

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bhatt, H., Bondar, A., Buescher, M., Calen, H., Ciepa, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Foehl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullstroem, C. -O., Heijkenskjoeld, L., Hejny, V., Huesken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khatri, G., Khoukaz, A., Khreptak, O., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, P., Kupsc, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Marianski, B., Morsch, H. -P., Moskal, P., Ohm, H., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pysniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schaetti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Strassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Varma, R., Wolke, M., Wronska, A., Wuestner, P., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zink, A., Zlomanczuk, J., Zupranski, P., and Zurek, M.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

Various theoretical calculations based on QCD or hadronic interactions predict that in addition to the recently observed dibaryon resonance $d^*(2380)$ with $I(J^P) = 0(3^+)$ there should also exist a dibaryon resonance with mirrored quantum numbers $I(J^P) = 3(0^+)$. We report here on a search for such a $NN$-decoupled state in data on the $pp \to pp\pi^+\pi^+\pi^-\pi^-$ reaction. Since no clear-cut evidence has been found, we give upper limits for the production cross section of such a resonance in the mass range 2280 - 2500 MeV.

Published
2016
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26. Measurement of the $\vec{n}p \to d\pi^0\pi^0$ Reaction with Polarized Beam in the Region of the $d^*(2380)$ Resonance

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Bondar, A., Büscher, M., Calen, H., Ciepał, I., Clement, H., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khatri, G., Khoukaz, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lawani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, . P., Mariański, B., Morsch, H. -P., Moskal, P., Ohm, H., del Rio, E. Perez, Piskunov, N. M., Prashun, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schätti--Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Siudak, R., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Täschner, A., Trzciński, A., Varma, R., Wolke, M., Wrońska, A., Wüstner, P., Zabierowski, J., Zieliński, M. J., Zink, A., Złomańczuk, J., Żuprański, P., and Żurek, M.

Subjects
Nuclear Experiment
Abstract

We report on a high-statistics measurement of the most basic double pionic fusion reaction $\vec{n}p \to d\pi^0\pi^0$ over the energy region of the $d^*(2380)$ resonance by use of a polarized deuteron beam and observing the double fusion reaction in the quasifree scattering mode. The measurements were performed with the WASA detector setup at COSY. The data reveal substantial analyzing powers and confirm conclusions about the $d^*$ resonance obtained from unpolarized measurements. We also confirm the previous unpolarized data obtained under complementary kinematic conditions.

Published
2016
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28. Antropologia e scienza. Modelli emergenti per un profilo transdisciplinare

Author

Ubbiali, S, Anelli, A, Ranieri, R, Maier, R, Monti, P, Prato, E, Marzo, D, Fasolino, N, Perego, V, Rezzonico, P, Noberasco, G, Cambria, D, Ceragioli, F, Heritier, P, Petrosino, S, Peruzzotti, F, Landi, F, Maier, Roberto Giorgio, r maier (ORCID:0000-0002-5443-6067), Ubbiali, S, Anelli, A, Ranieri, R, Maier, R, Monti, P, Prato, E, Marzo, D, Fasolino, N, Perego, V, Rezzonico, P, Noberasco, G, Cambria, D, Ceragioli, F, Heritier, P, Petrosino, S, Peruzzotti, F, Landi, F, Maier, Roberto Giorgio, and r maier (ORCID:0000-0002-5443-6067)

Abstract

La complessità dell'epoca fa emergere il tema antropologico anche nell'ambito delle scienze dure. Alcuni modelli epistemologici emergenti riportano il tema della qualità relazionale al cuore dei processi di produzione del sapere. La teologia e la filosofia hanno la possibilità di interagire in modo nuovo con queste istanze.

Published
2024

29. Early management of adult traumatic spinal cord injury in patients with polytrauma: a consensus and clinical recommendations jointly developed by the World Society of Emergency Surgery (WSES) & the European Association of Neurosurgical Societies (EANS)

Author

Picetti, E, Demetriades, A, Catena, F, Aarabi, B, Abu-Zidan, F, Alves, O, Ansaloni, L, Armonda, R, Badenes, R, Bala, M, Balogh, Z, Barbanera, A, Bertuccio, A, Biffl, W, Bouzat, P, Buki, A, Castano-Leon, A, Cerasti, D, Citerio, G, Coccolini, F, Coimbra, R, Coniglio, C, Costa, F, De Iure, F, Depreitere, B, Fainardi, E, Fehlings, M, Gabrovsky, N, Godoy, D, Gruen, P, Gupta, D, Hawryluk, G, Helbok, R, Hossain, I, Hutchinson, P, Iaccarino, C, Inaba, K, Ivanov, M, Kaprovoy, S, Kirkpatrick, A, Klein, S, Kolias, A, Konovalov, N, Lagares, A, Lippa, L, Loza-Gomez, A, Luoto, T, Maas, A, Maciejczak, A, Maier, R, Marklund, N, Martin, M, Melloni, I, Mendoza-Lattes, S, Meyfroidt, G, Munari, M, Napolitano, L, Okonkwo, D, Otomo, Y, Papadopoulos, M, Petr, O, Peul, W, Pudkrong, A, Qasim, Z, Rasulo, F, Reizinho, C, Ringel, F, Rizoli, S, Rostami, E, Rubiano, A, Russo, E, Sarwal, A, Schwab, J, Servadei, F, Sharma, D, Sharif, S, Shiban, E, Shutter, L, Stahel, P, Taccone, F, Terpolilli, N, Thomé, C, Toth, P, Tsitsopoulos, P, Udy, A, Vaccaro, A, Varon, A, Vavilala, M, Younsi, A, Zackova, M, Zoerle, T, Robba, C, Picetti, Edoardo, Demetriades, Andreas K., Catena, Fausto, Aarabi, Bizhan, Abu-Zidan, Fikri M., Alves, Oscar L., Ansaloni, Luca, Armonda, Rocco A., Badenes, Rafael, Bala, Miklosh, Balogh, Zsolt J., Barbanera, Andrea, Bertuccio, Alessandro, Biffl, Walter L., Bouzat, Pierre, Buki, Andras, Castano-Leon, Ana Maria, Cerasti, Davide, Citerio, Giuseppe, Coccolini, Federico, Coimbra, Raul, Coniglio, Carlo, Costa, Francesco, De Iure, Federico, Depreitere, Bart, Fainardi, Enrico, Fehlings, Michael J., Gabrovsky, Nikolay, Godoy, Daniel Agustin, Gruen, Peter, Gupta, Deepak, Hawryluk, Gregory W. J., Helbok, Raimund, Hossain, Iftakher, Hutchinson, Peter J., Iaccarino, Corrado, Inaba, Kenji, Ivanov, Marcel, Kaprovoy, Stanislav, Kirkpatrick, Andrew W., Klein, Sam, Kolias, Angelos, Konovalov, Nikolay A., Lagares, Alfonso, Lippa, Laura, Loza-Gomez, Angelica, Luoto, Teemu M., Maas, Andrew I. R., Maciejczak, Andrzej, Maier, Ronald V., Marklund, Niklas, Martin, Matthew J., Melloni, Ilaria, Mendoza-Lattes, Sergio, Meyfroidt, Geert, Munari, Marina, Napolitano, Lena M., Okonkwo, David O., Otomo, Yasuhiro, Papadopoulos, Marios C., Petr, Ondra, Peul, Wilco C., Pudkrong, Aichholz K., Qasim, Zaffer, Rasulo, Frank, Reizinho, Carla, Ringel, Florian, Rizoli, Sandro, Rostami, Elham, Rubiano, Andres M., Russo, Emanuele, Sarwal, Aarti, Schwab, Jan M., Servadei, Franco, Sharma, Deepak, Sharif, Salman, Shiban, Ehab, Shutter, Lori, Stahel, Philip F., Taccone, Fabio S., Terpolilli, Nicole A., Thomé, Claudius, Toth, Peter, Tsitsopoulos, Parmenion P., Udy, Andrew, Vaccaro, Alexander R., Varon, Albert J., Vavilala, Monica S., Younsi, Alexander, Zackova, Monika, Zoerle, Tommaso, Robba, Chiara, Picetti, E, Demetriades, A, Catena, F, Aarabi, B, Abu-Zidan, F, Alves, O, Ansaloni, L, Armonda, R, Badenes, R, Bala, M, Balogh, Z, Barbanera, A, Bertuccio, A, Biffl, W, Bouzat, P, Buki, A, Castano-Leon, A, Cerasti, D, Citerio, G, Coccolini, F, Coimbra, R, Coniglio, C, Costa, F, De Iure, F, Depreitere, B, Fainardi, E, Fehlings, M, Gabrovsky, N, Godoy, D, Gruen, P, Gupta, D, Hawryluk, G, Helbok, R, Hossain, I, Hutchinson, P, Iaccarino, C, Inaba, K, Ivanov, M, Kaprovoy, S, Kirkpatrick, A, Klein, S, Kolias, A, Konovalov, N, Lagares, A, Lippa, L, Loza-Gomez, A, Luoto, T, Maas, A, Maciejczak, A, Maier, R, Marklund, N, Martin, M, Melloni, I, Mendoza-Lattes, S, Meyfroidt, G, Munari, M, Napolitano, L, Okonkwo, D, Otomo, Y, Papadopoulos, M, Petr, O, Peul, W, Pudkrong, A, Qasim, Z, Rasulo, F, Reizinho, C, Ringel, F, Rizoli, S, Rostami, E, Rubiano, A, Russo, E, Sarwal, A, Schwab, J, Servadei, F, Sharma, D, Sharif, S, Shiban, E, Shutter, L, Stahel, P, Taccone, F, Terpolilli, N, Thomé, C, Toth, P, Tsitsopoulos, P, Udy, A, Vaccaro, A, Varon, A, Vavilala, M, Younsi, A, Zackova, M, Zoerle, T, Robba, C, Picetti, Edoardo, Demetriades, Andreas K., Catena, Fausto, Aarabi, Bizhan, Abu-Zidan, Fikri M., Alves, Oscar L., Ansaloni, Luca, Armonda, Rocco A., Badenes, Rafael, Bala, Miklosh, Balogh, Zsolt J., Barbanera, Andrea, Bertuccio, Alessandro, Biffl, Walter L., Bouzat, Pierre, Buki, Andras, Castano-Leon, Ana Maria, Cerasti, Davide, Citerio, Giuseppe, Coccolini, Federico, Coimbra, Raul, Coniglio, Carlo, Costa, Francesco, De Iure, Federico, Depreitere, Bart, Fainardi, Enrico, Fehlings, Michael J., Gabrovsky, Nikolay, Godoy, Daniel Agustin, Gruen, Peter, Gupta, Deepak, Hawryluk, Gregory W. J., Helbok, Raimund, Hossain, Iftakher, Hutchinson, Peter J., Iaccarino, Corrado, Inaba, Kenji, Ivanov, Marcel, Kaprovoy, Stanislav, Kirkpatrick, Andrew W., Klein, Sam, Kolias, Angelos, Konovalov, Nikolay A., Lagares, Alfonso, Lippa, Laura, Loza-Gomez, Angelica, Luoto, Teemu M., Maas, Andrew I. R., Maciejczak, Andrzej, Maier, Ronald V., Marklund, Niklas, Martin, Matthew J., Melloni, Ilaria, Mendoza-Lattes, Sergio, Meyfroidt, Geert, Munari, Marina, Napolitano, Lena M., Okonkwo, David O., Otomo, Yasuhiro, Papadopoulos, Marios C., Petr, Ondra, Peul, Wilco C., Pudkrong, Aichholz K., Qasim, Zaffer, Rasulo, Frank, Reizinho, Carla, Ringel, Florian, Rizoli, Sandro, Rostami, Elham, Rubiano, Andres M., Russo, Emanuele, Sarwal, Aarti, Schwab, Jan M., Servadei, Franco, Sharma, Deepak, Sharif, Salman, Shiban, Ehab, Shutter, Lori, Stahel, Philip F., Taccone, Fabio S., Terpolilli, Nicole A., Thomé, Claudius, Toth, Peter, Tsitsopoulos, Parmenion P., Udy, Andrew, Vaccaro, Alexander R., Varon, Albert J., Vavilala, Monica S., Younsi, Alexander, Zackova, Monika, Zoerle, Tommaso, and Robba, Chiara

Abstract

Background: The early management of polytrauma patients with traumatic spinal cord injury (tSCI) is a major challenge. Sparse data is available to provide optimal care in this scenario and worldwide variability in clinical practice has been documented in recent studies. Methods: A multidisciplinary consensus panel of physicians selected for their established clinical and scientific expertise in the acute management of tSCI polytrauma patients with different specializations was established. The World Society of Emergency Surgery (WSES) and the European Association of Neurosurgical Societies (EANS) endorsed the consensus, and a modified Delphi approach was adopted. Results: A total of 17 statements were proposed and discussed. A consensus was reached generating 17 recommendations (16 strong and 1 weak). Conclusions: This consensus provides practical recommendations to support a clinician’s decision making in the management of tSCI polytrauma patients.

Published
2024

30. Measurement of the absolute differential cross section of proton-proton elastic scattering at small angles

Author

Mchedlishvili, D., Chiladze, D., Dymov, S., Bagdasarian, Z., Barsov, S., Gebel, R., Gou, B., Hartmann, M., Kacharava, A., Keshelashvili, I., Khoukaz, A., Kulessa, P., Kulikov, A., Lehrach, A., Lomidze, N., Lorentz, B., Maier, R., Macharashvili, G., Merzliakov, S., Mikirtychyants, S., Nioradze, M., Ohm, H., Prasuhn, D., Rathmann, F., Serdyuk, V., Schroer, D., Shmakova, V., Stassen, R., Stein, H. J., Stockhorst, H., Strakovsky, I. I., Ströher, H., Tabidze, M., Täschner, A., Trusov, S., Tsirkov, D., Uzikov, Yu., Valdau, Yu., Wilkin, C., Workman, R. L., and Wüstner, P.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The differential cross section for proton-proton elastic scattering has been measured at a beam energy of 1.0 GeV and in 200 MeV steps from 1.6 to 2.8 GeV for centre-of-mass angles in the range from 12-16 degrees to 25-30 degrees, depending on the energy. Absolute normalisations of typically 3% were achieved by studying the energy losses of the circulating beam of the COSY storage ring as it passed repeatedly through the windowless hydrogen target of the ANKE magnetic spectrometer. It is shown that the data have a significant impact upon a partial wave analysis. After extrapolating the differential cross sections to the forward direction, the results are broadly compatible with the predictions of forward dispersion relations.

Published
2015
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31. Measurements of Branching Ratios for $\eta$ Decays into Charged Particles

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Coderre, D., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khatri, G., Khoukaz, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Mikirtychiants, M., Morsch, H. -P., Moskal, P., Ohm, H., Ozerianska, I., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Siudak, R., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Täschner, A., Trzciński, A., Varma, R., Wiedner, U., Wolke, M., Wrońska, A., Wüstner, P., Wurm, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Zink, A., Złomańczuk, J., Żuprański, P., and Żurek, M.

Subjects
Nuclear Experiment
Abstract

The WASA-at-COSY experiment has collected $3\times10^{7}$ events with $\eta$-mesons produced via the reaction $pd\rightarrow{^{3}\textrm{He}}\eta$ at $\textrm{T} = 1.0 \textrm{GeV}$. Using this data set, we evaluate the branching ratios of the decays $\eta\to\pi^{+}\pi^{-}\gamma$, $\eta\to e^{+}e^{-}\gamma$, $\eta\to\pi^{+}\pi^{-}e^{+}e^{-}$ and $\eta\to e^{+}e^{-}e^{+}e^{-}$. The branching ratios are normalized to the $\eta\rightarrow\pi^{+}\pi^{-}\pi^{0}$ decay. In addition an upper limit on a $CP$-violating asymmetry in $\eta\rightarrow \pi^{+}\pi^{-}e^{+}e^{-}$ is extracted.

Published
2015
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32. Trapping in irradiated p-on-n silicon sensors at fluences anticipated at the HL-LHC outer tracker

Author

Adam, W., Bergauer, T., Dragicevic, M., Friedl, M., Fruehwirth, R., Hoch, M., Hrubec, J., Krammer, M., Treberspurg, W., Waltenberger, W., Alderweireldt, S., Beaumont, W., Janssen, X., Luyckx, S., Van Mechelen, P., Van Remortel, N., Van Spilbeeck, A., Barria, P., Caillol, C., Clerbaux, B., De Lentdecker, G., Dobur, D., Favart, L., Grebenyuk, A., Lenzi, Th., Léonard, A., Maerschalk, Th., Mohammadi, A., Perniè, L., Randle-Conde, A., Reis, T., Seva, T., Thomas, L., Velde, C. Vander, Vanlaer, P., Wang, J., Zenoni, F., Zeid, S. Abu, Blekman, F., De Bruyn, I., D'Hondt, J., Daci, N., Deroover, K., Heracleous, N., Keaveney, J., Lowette, S., Moreels, L., Olbrechts, A., Python, Q., Tavernier, S., Van Mulders, P., Van Onsem, G., Van Parijs, I., Strom, D. A., Caudron, A., Ceard, L., De Callatay, B., Delaere, C., Pree, T. Du, Forthomme, L., Giammanco, A., Hollar, J., Jez, P., Michotte, D., Nuttens, C., Perrini, L., Pagano, D., Quertenmont, L., Selvaggi, M., Marono, M. Vidal, Beliy, N., Caebergs, T., Daubie, E., Hammad, G. H., Härkönen, J., Lampén, T., Luukka, P. -R., Mäenpää, T., Peltola, T., Tuominen, E., Tuovinen, E., Eerola, P., Tuuva, T., Beaulieu, G., Boudoul, G., Combaret, C., Contardo, D., Gallbit, G., Lumb, N., Mathez, H., Mirabito, L., Perries, S., Sabes, D., Donckt, M. Vander, Verdier, P., Viret, S., Zoccarato, Y., Agram, J. -L., Conte, E., Fontaine, J. -Ch., Andrea, J., Bloch, D., Bonnin, C., Brom, J. -M., Chabert, E., Charles, L., Goetzmann, Ch., Gross, L., Hosselet, J., Mathieu, C., Richer, M., Skovpen, K., Autermann, C., Edelhoff, M., Esser, H., Feld, L., Karpinski, W., Klein, K., Lipinski, M., Ostapchuk, A., Pierschel, G., Preuten, M., Raupach, F., Sammet, J., Schael, S., Schwering, G., Wittmer, B., Wlochal, M., Zhukov, V., Pistone, C., Fluegge, G., Kuensken, A., Geisler, M., Pooth, O., Stahl, A., Bartosik, N., Behr, J., Burgmeier, A., Calligaris, L., Dolinska, G., Eckerlin, G., Eckstein, D., Eichhorn, T., Fluke, G., Garcia, J. Garay, Gizhko, A., Hansen, K., Harb, A., Hauk, J., Kalogeropoulos, A., Kleinwort, C., Korol, I., Lange, W., Lohmann, W., Mankel, R., Maser, H., Mittag, G., Muhl, C., Mussgiller, A., Nayak, A., Ntomari, E., Perrey, H., Pitzl, D., Schroeder, M., Seitz, C., Spannagel, S., Zuber, A., Biskop, H., Blobel, V., Buhmann, P., Centis-Vignali, M., Draeger, A. -R., Erfle, J., Garutti, E., Haller, J., Hoffmann, M., Junkes, A., Lapsien, T., Mättig, S., Matysek, M., Perieanu, A., Poehlsen, J., Poehlsen, T., Scharf, Ch., Schleper, P., Schmidt, A., Sola, V., Steinbrück, G., Wellhausen, J., Barvich, T., Barth, Ch., Boegelspacher, F., De Boer, W., Butz, E., Casele, M., Colombo, F., Dierlamm, A., Eber, R., Freund, B., Hartmann, F., Hauth, Th., Heindl, S., Hoffmann, K. -H., Husemann, U., Kornmeyer, A., Mallows, S., Muller, Th., Nuernberg, A., Printz, M., Simonis, H. J., Steck, P., Weber, M., Weiler, Th., Bhardwaj, A., Kumar, A., Ranjan, K., Bakhshiansohl, H., Behnamian, H., Khakzad, M., Naseri, M., Cariola, P., De Robertis, G., Fiore, L., Franco, M., Loddo, F., Sala, G., Silvestris, L., Creanza, D., De Palma, M., Maggi, G., My, S., Selvaggi, G., Albergo, S., Cappello, G., Chiorboli, M., Costa, S., Giordano, F., Di Mattia, A., Potenza, R., Saizu, M. A., Tricomi, A., Tuvè, C., Barbagli, G., Brianzi, M., Ciaranfi, R., Civinini, C., Gallo, E., Meschini, M., Paoletti, S., Sguazzoni, G., Ciulli, V., D'Alessandro, R., Gonzi, S., Gori, V., Focardi, E., Lenzi, P., Scarlini, E., Tropiano, A., Viliani, L., Ferro, F., Robutti, E., Vetere, M. Lo, Gennai, S., Malvezzi, S., Menasce, D., Moroni, L., Pedrini, D., Dinardo, M., Fiorendi, S., Manzoni, R. A., Azzi, P., Bacchetta, N., Bisello, D., Dall'Osso, M., Dorigo, T., Giubilato, P., Pozzobon, N., Tosi, M., Zucchetta, A., De Canio, F., Gaioni, L., Manghisoni, M., Nodari, B., Re, V., Traversi, G., Comotti, D., Ratti, L., Bilei, G. M., Bissi, L., Checcucci, B., Magalotti, D., Menichelli, M., Saha, A., Servoli, L., Storchi, L., Biasini, M., Conti, E., Ciangottini, D., Fanò, L., Lariccia, P., Mantovani, G., Passeri, D., Placidi, P., Salvatore, M., Santocchia, A., Solestizi, L. A., Spiezia, A., Androsov, K., Azzurri, P., Arezzini, S., Bagliesi, G., Basti, A., Boccali, T., Bosi, F., Castaldi, R., Ciampa, A., Cioccid, M. A., Dell'Orso, R., Fedi, G., Giassi, A., Grippod, M. T., Lomtadze, T., Magazzu, G., Mazzoni, E., Minuti, M., Moggi, A., Moond, C. S., Morsani, F., Palla, F., Palmonari, F., Raffaelli, F., Savoy-Navarro, A., Serban, A. T., Spagnolo, P., Tenchini, R., Venturi, A., Verdini, P. G., Martini, L., Messineo, A., Rizzi, A., Tonelli, G., Calzolari, F., Donato, S., Fiori, F., Ligabue, F., Vernieri, C., Demaria, N., Rivetti, A., Bellan, R., Casasso, S., Costa, M., Covarelli, R., Migliore, E., Monteil, E., Musich, M., Pacher, L., Ravera, F., Romero, A., Solano, A., Trapani, P., Echeverria, R. Jaramillo, Fernandez, M., Gomez, G., Moya, D., Sanchez, F. J. Gonzalez, Sanchez, F. J. Munoz, Vila, I., Virto, A. L., Abbaneo, D., Ahmed, I., Albert, E., Auzinger, G., Berruti, G., Bianchi, G., Blanchot, G., Breuker, H., Ceresa, D., Christiansen, J., Cichy, K., Daguin, J., D'Alfonso, M., D'Auria, A., Detraz, S., De Visscher, S., Deyrail, D., Faccio, F., Felici, D., Frank, N., Gill, K., Giordano, D., Harris, P., Honma, A., Kaplon, J., Kornmayer, A., Kottelat, L., Kovacs, M., Mannelli, M., Marchioro, A., Marconi, S., Martina, S., Mersi, S., Michelis, S., Moll, M., Onnela, A., Pakulski, T., Pavis, S., Peisert, A., Pernot, J. -F., Petagna, P., Petrucciani, G., Postema, H., Rose, P., Rzonca, M., Stoye, M., Tropea, P., Troska, J., Tsirou, A., Vasey, F., Vichoudis, P., Verlaat, B., Zwalinski, L., Bachmair, F., Becker, R., Bäni, L., di Calafiori, D., Casal, B., Djambazov, L., Donega, M., Dünser, M., Eller, P., Grab, C., Hits, D., Horisberger, U., Hoss, J., Kasieczka, G., Lustermann, W., Mangano, B., Marionneau, M., del Arbol, P. Martinez Ruiz, Masciovecchio, M., Perrozzi, L., Roeser, U., Rossini, M., Starodumov, A., Takahashi, M., Wallny, R., Amsler, C., Bösiger, K., Caminada, L., Canelli, F., Chiochia, V., de Cosa, A., Galloni, C., Hreus, T., Kilminster, B., Lange, C., Maier, R., Ngadiuba, J., Pinna, D., Robmann, P., Taroni, S., Yang, Y., Bertl, W., Deiters, K., Erdmann, W., Horisberger, R., Kaestli, H. -C., Kotlinski, D., Langenegger, U., Meier, B., Rohe, T., Streuli, S., Chen, P. -H., Dietz, C., Grundler, U., Hou, W. -S., Lu, R. -S., Moya, M., Wilken, R., Cussans, D., Flacher, H., Goldstein, J., Grimes, M., Jacob, J., Nasr-Storey, S. Seif El, Cole, J., Hobson, P., Leggat, D., Reid, I. D., Teodorescu, L., Bainbridge, R., Dauncey, P., Fulcher, J., Hall, G., Magnan, A. -M., Pesaresi, M., Raymond, D. M., Uchida, K., Coughlan, J. A., Harder, K., Ilic, J., Tomalin, I. R., Garabedian, A., Heintz, U., Narain, M., Nelson, J., Sagir, S., Speer, T., Swanson, J., Tersegno, D., Watson-Daniels, J., Chertok, M., Conway, J., Conway, R., Flores, C., Lander, R., Pellett, D., Ricci-Tam, F., Squires, M., Thomson, J., Yohay, R., Burt, K., Ellison, J., Hanson, G., Malberti, M., Olmedo, M., Cerati, G., Sharma, V., Vartak, A., Yagil, A., Della Porta, G. Zevi, Dutta, V., Gouskos, L., Incandela, J., Kyre, S., McColl, N., Mullin, S., White, D., Cumalat, J. P., Ford, W. T., Gaz, A., Krohn, M., Stenson, K., Wagner, S. R., Baldin, B., Bolla, G., Burkett, K., Butler, J., Cheung, H., Chramowicz, J., Christian, D., Cooper, W. E., Deptuch, G., Derylo, G., Gingu, C., Gruenendahl, S., Hasegawa, S., Hoff, J., Howell, J., Hrycyk, M., Jindariani, S., Johnson, M., Jung, A., Joshi, U., Kahlid, F., Lei, C. M., Lipton, R., Liu, T., Los, S., Matulik, M., Merkel, P., Nahn, S., Prosser, A., Rivera, R., Shenai, A., Spiegel, L., Tran, N., Uplegger, L., Voirin, E., Yin, H., Adams, M. R., Berry, D. R., Evdokimov, A., Evdokimov, O., Gerber, C. E., Hofman, D. J., Kapustka, B. K., O'Brien, C., Gonzalez, D. I. Sandoval, Trauger, H., Turner, P., Parashar, N., Stupak, J., Bortoletto, D., Bubna, M., Hinton, N., Jones, M., Miller, D. H., Shi, X., Tan, P., Baringer, P., Bean, A., Benelli, G., Gray, J., Majumder, D., Noonan, D., Sanders, S., Stringer, R., Ivanov, A., Makouski, M., Skhirtladze, N., Taylor, R., Anderson, I., Fehling, D., Gritsan, A., Maksimovic, P., Martin, C., Nash, K., Osherson, M., Swartz, M., Xiao, M., Acosta, J. G., Cremaldi, L. M., Oliveros, S., Perera, L., Summers, D., Bloom, K., Bose, S., Claes, D. R., Dominguez, A., Fangmeier, C., Suarez, R. Gonzalez, Meier, F., Monroy, J., Hahn, K., Sevova, S., Sung, K., Trovato, M., Bartz, E., Duggan, D., Halkiadakis, E., Lath, A., Park, M., Schnetzer, S., Stone, R., Walker, M., Malik, S., Mendez, H., Vargas, J. E. Ramirez, Alyari, M., Dolen, J., George, J., Godshalk, A., Iashvili, I., Kaisen, J., Kharchilava, A., Rappoccio, S., Alexander, J., Chaves, J., Chu, J., Dittmer, S., Kaufman, G., Mirman, N., Ryd, A., Salvati, E., Skinnari, L., Thom, J., Thompson, J., Tucker, J., Winstrom, L., Akgün, B., Ecklund, K. M., Nussbaum, T., Zabel, J., Betchart, B., Demina, R., Hindrichs, O., Petrillo, G., Eusebi, R., Osipenkov, I., Perloff, A., Ulmer, K. A., Delannoy, A. G., D'Angelo, P., and Johns, W.

Subjects
Physics - Instrumentation and Detectors
Abstract

The degradation of signal in silicon sensors is studied under conditions expected at the CERN High-Luminosity LHC. 200 $\mu$m thick n-type silicon sensors are irradiated with protons of different energies to fluences of up to $3 \cdot 10^{15}$ neq/cm$^2$. Pulsed red laser light with a wavelength of 672 nm is used to generate electron-hole pairs in the sensors. The induced signals are used to determine the charge collection efficiencies separately for electrons and holes drifting through the sensor. The effective trapping rates are extracted by comparing the results to simulation. The electric field is simulated using Synopsys device simulation assuming two effective defects. The generation and drift of charge carriers are simulated in an independent simulation based on PixelAV. The effective trapping rates are determined from the measured charge collection efficiencies and the simulated and measured time-resolved current pulses are compared. The effective trapping rates determined for both electrons and holes are about 50% smaller than those obtained using standard extrapolations of studies at low fluences and suggests an improved tracker performance over initial expectations.

Published
2015
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33. New method for a continuous determination of the spin tune in storage rings and implications for precision experiments

Author

Eversmann, D., Hejny, V., Hinder, F., Kacharava, A., Pretz, J., Rathmann, F., Rosenthal, M., Trinkel, F., Andrianov, S., Augustyniak, W., Bagdasarian, Z., Bai, M., Bernreuther, W., Bertelli, S., Berz, M., Bsaisou, J., Chekmenev, S., Chiladze, D., Ciullo, G., Contalbrigo, M., de Vries, J., Dymov, S., Engels, R., Esser, F. M., Felden, O., Gaisser, M., Gebel, R., Glückler, H., Goldenbaum, F., Grigoryev, K., Grzonka, D., Guidoboni, G., Hanhart, C., Heberling, D., Hempelmann, N., Hetzel, J., Hipple, R., Hölscher, D., Ivanov, A., Kamerdzhiev, V., Kamys, B., Keshelashvili, I., Khoukaz, A., Koop, I., Krause, H-J., Krewald, S., Kulikov, A., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Maanen, P., Macharashvili, G., Magiera, A., Maier, R., Makino, K., Marianski, B., Mchedlishvili, D., Meißner, Ulf-G., Mey, S., Nass, A., Natour, G., Nikolaev, N., Nioradze, M., Nogga, A., Nowakowski, K., Pesce, A., Prasuhn, D., Ritman, J., Rudy, Z., Saleev, A., Semertzidis, Y., Senichev, Y., Shmakova, V., Silenko, A., Slim, J., Soltner, H., Stahl, A., Stassen, R., Statera, M., Stephenson, E., Stockhorst, H., Straatmann, H., Ströher, H., Tabidze, M., Talman, R., Engblom, P. Thörngren, Trzcinski, A., Uzikov, Yu., Valdau, Yu., Valetov, E., Vassiliev, A., Weidemann, C., Wilkin, C., Wirzba, A., Wronska, A., Wüstner, P., Zakrzewska, M., Zaplatin, E., Zupranski, P., and Zyuzin, D.

Subjects
Physics - Accelerator Physics, Nuclear Experiment
Abstract

A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, the spin tune - defined as the number of spin precessions per turn - is given by $\nu_s = \gamma G$ (gamma is the Lorentz factor, $G$ the magnetic anomaly). For 970 MeV/c deuterons coherently precessing with a frequency of ~120 kHz in the Cooler Synchrotron COSY, the spin tune is deduced from the up-down asymmetry of deuteron carbon scattering. In a time interval of 2.6 s, the spin tune was determined with a precision of the order $10^{-8}$, and to $1 \cdot 10^{-10}$ for a continuous 100 s accelerator cycle. This renders the presented method a new precision tool for accelerator physics: controlling the spin motion of particles to high precision is mandatory, in particular, for the measurement of electric dipole moments of charged particles in a storage ring., Comment: 6 pages, 6 figures

Published
2015
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34. A Storage Ring Experiment to Detect a Proton Electric Dipole Moment

Author

Anastassopoulos, V., Andrianov, S., Baartman, R., Bai, M., Baessler, S., Benante, J., Berz, M., Blaskiewicz, M., Bowcock, T., Brown, K., Casey, B., Conte, M., Crnkovic, J., Fanourakis, G., Fedotov, A., Fierlinger, P., Fischer, W., Gaisser, M. O., Giomataris, Y., Grosse-Perdekamp, M., Guidoboni, G., Haciomeroglu, S., Hoffstaetter, G., Huang, H., Incagli, M., Ivanov, A., Kawall, D., Khazin, B., Kim, Y. I., King, B., Koop, I. A., Larsen, R., Lazarus, D. M., Lebedev, V., Lee, M. J., Lee, S., Lee, Y. H., Lehrach, A., Lenisa, P., Sandri, P. Levi, Luccio, A. U., Lyapin, A., MacKay, W., Maier, R., Makino, K., Malitsky, N., Marciano, W. J., Meng, W., Meot, F., Metodiev, E. M., Miceli, L., Moricciani, D., Morse, W. M., Nagaitsev, S., Nayak, S. K., Orlov, Y. F., Ozben, C. S., Park, S. T., Pesce, A., Pile, P., Polychronakos, V., Podobedov, B., Pretz, J., Ptitsyn, V., Ramberg, E., Raparia, D., Rathmann, F., Rescia, S., Roser, T., Sayed, H. Kamal, Semertzidis, Y. K., Senichev, Y., Sidorin, A., Silenko, A., Simos, N., Stahl, A., Stephenson, E. J., Stroeher, H., Syphers, M. J., Talman, J., Talman, R. M., Tishchenko, V., Touramanis, C., Tsoupas, N., Venanzoni, G., Vetter, K., Vlassis, S., Won, E., Zavattini, G., Zelenski, A., and Zioutas, K.

Subjects
Physics - Accelerator Physics, High Energy Physics - Experiment
Abstract

A new experiment is described to detect a permanent electric dipole moment of the proton with a sensitivity of $10^{-29}e\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant to the experiment are discussed and techniques to address them are presented. The measurement is sensitive to new physics beyond the Standard Model at the scale of 3000~TeV., Comment: 8 pages, 3 figures

Published
2015
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35. Measurement of the analysing power in proton-proton elastic scattering at small angles

Author

Bagdasarian, Z., Chiladze, D., Dymov, S., Kacharava, A., Macharashvili, G., Barsov, S., Gebel, R., Gou, B., Hartmann, M., Keshelashvili, I., Khoukaz, A., Kulessa, P., Kulikov, A., Lehrach, A., Lomidze, N., Lorentz, B., Maier, R., Mchedlishvili, D., Merzliakov, S., Mikirtychyants, S., Nioradze, M., Ohm, H., Papenbrock, M., Prasuhn, D., Rathmann, F., Serdyuk, V., Shmakova, V., Stassen, R., Stockhorst, H., Strakovsky, I. I., Ströher, H., Tabidze, M., Täschner, A., Trusov, S., Tsirkov, D., Uzikov, Yu., Valdau, Yu., Wilkin, C., and Workman, R. L.

Subjects
Nuclear Experiment
Abstract

The proton analysing power in $\vec{p}p$ elastic scattering has been measured at small angles at COSY-ANKE at 796 MeV and five other beam energies between 1.6 and 2.4 GeV using a polarised proton beam. The asymmetries obtained by detecting the fast proton in the ANKE forward detector or the slow recoil proton in a silicon tracking telescope are completely consistent. Although the analysing power results agree well with the many published data at 796 MeV, and also with the most recent partial wave solution at this energy, the ANKE data at the higher energies lie well above the predictions of this solution at small angles. An updated phase shift analysis that uses the ANKE results together with the World data leads to a much better description of these new measurements., Comment: 5 pages, 3 figures

Published
2014
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36. Measurement of the $np \to np\pi^0\pi^0$ Reaction in Search for the Recently Observed $d^*(2380)$ Resonance

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Coderre, D., Czerwiński, E., Demmich, K., Doroshkevich, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goslawski, P., Goswami, A., Grigoryev, K., Gullström, C. --O., Hauenstein, F., Heijkenskjöld, L., Hejny, V., Höistad, B., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khoukaz, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Mikirtychiants, M., Morsch, H. --P., Moskal, P., Ohm, H., Ozerianska, I., del Rio, E. Perez, Piskunov, N. M., Podkopał, P., Prasuhn, D., Pricking, A., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Shwartz, B., Siudak, R., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Täschner, A., Trzciński, A., Varma, R., Wagner, G. J., Wolke, M., Wrońska, A., Wüstner, P., Wurm, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Zink, A., Złomańczuk, J., Żuprański, P., and Żurek, M.

Subjects
Nuclear Experiment
Abstract

Exclusive measurements of the quasi-free $np \to np\pi^0\pi^0$ reaction have been performed by means of $dp$ collisions at $T_d$ = 2.27 GeV using the WASA detector setup at COSY. Total and differential cross sections have been obtained covering the energy region $\sqrt s$ = (2.35 - 2.46) GeV, which includes the region of the ABC effect and its associated $d^*(2380)$ resonance. Adding the $d^*$ resonance amplitude to that for the conventional processes leads to a reasonable description of the data. The observed resonance effect in the total cross section is in agreement with the predictions of F\"aldt and Wilkin as well Albadajedo and Oset. The ABC effect, {\it i.e.} the low-mass enhancement in the $\pi^0\pi^0$-invariant mass spectrum, is found to be very modest - if present at all, which might pose a problem to some of its interpretations.

Published
2014
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37. Experimental access to Transition Distribution Amplitudes with the \={P}ANDA experiment at FAIR

Author

PANDA Collaboration, Singh, B. P., Erni, W., Keshelashvili, I., Krusche, B., M. Steinacher, Liu, B., Liu, H., Liu, Z., Shen, X., Wang, C., J. Zhao, Albrecht, M., Fink, M., Heinsius, F. H., Held, T., Holtmann, T., Koch, H., Kopf, B., Kümmel, M., Kuhl, G., Kuhlmann, M., Leyhe, M., Mikirtychyants, M., Musiol, P., Mustafa, A., Pelizäus, M., Pychy, J., Richter, M., Schnier, C., Schröder, T., Sowa, C., Steinke, M., Triffterer, T., Wiedner, U., Beck, R., Hammann, C., Kaiser, D., Ketzer, B., Kube, M., Mahlberg, P., Rossbach, M., Schmidt, C., Schmitz, R., Thoma, U., Walther, D., Wendel, C., Wilson, A., Bianconi, A., Bragadireanu, M., Caprini, M., Pantea, D., Pietreanu, D., Vasile, M. E., Patel, B., Kaplan, D., Brandys, P., Czyzewski, T., Czyzycki, W., Domagala, M., Hawryluk, M., Filo, G., Krawczyk, M., Kwiatkowski, D., Lisowski, E., Lisowski, F., Fiutowski, T., Idzik, M., Mindur, B., Przyborowski, D., Swientek, K., Czech, B., Kliczewski, S., Korcyl, K., Kozela, A., Kulessa, P., Lebiedowicz, P., Malgorzata, K., Pysz, K., Schäfer, W., Siudak, R., Szczurek, A., Biernat, J., Jowzaee, S., Kamys, B., Kistryn, S., Korcyl, G., Krzemien, W., Magiera, A., Moskal, P., Palka, M., Psyzniak, A., Rudy, Z., Salabura, P., Smyrski, J., Strzempek, P., Wrońska, A., Augustin, I., Lehmann, I., Nicmorus, D., Schepers, G., Schmitt, L., Al-Turany, M., Cahit, U., Capozza, L., Dbeyssi, A., Deppe, H., Dzhygadlo, R., Ehret, A., Flemming, H., Gerhardt, A., Götzen, K., Karabowicz, R., Kliemt, R., Kunkel, J., Kurilla, U., Lehmann, D., Lühning, J., Maas, F., Morales, C. Morales, Espí, M. C. Mora, Nerling, F., Orth, H., Peters, K., Pineiro, D. Rodríguez, Saito, N., Saito, T., Lorente, A. Sánchez, Schmidt, C. J., Schwarz, C., Schwiening, J., Traxler, M., Valente, R., Voss, B., Wieczorek, P., Wilms, A., Zühlsdorf, M., Abazov, V. M., Alexeev, G., Arefiev, A., Astakhov, V. I., Barabanov, M. Yu., Batyunya, B. V., Davydov, Yu. I., Dodokhov, V. Kh., Efremov, A. A., Fedunov, A. G., Festchenko, A. A., Galoyan, A. S., Grigoryan, S., Karmokov, A., Koshurnikov, E. K., Lobanov, V. I., Lobanov, Yu. Yu., Makarov, A. F., Malinina, L. V., Malyshev, V. L., Mustafaev, G. A., Olshevskiy, A., Pasyuk, M. A., Perevalova, E. A., Piskun, A. A., Pocheptsov, T. A., Pontecorvo, G., Rodionov, V. K., Rogov, Yu. N., Salmin, R. A., Samartsev, A. G., Sapozhnikov, M. G., Shabratova, G. S., Skachkov, N. B., Skachkova, A. N., Strokovsky, E. A., Suleimanov, M. K., Teshev, R. Sh., Tokmenin, V. V., Uzhinsky, V. V., Vodopyanov, A. S., Zaporozhets, S. A., Zhuravlev, N. I., Zorin, A. G., Branford, D., Glazier, D., Watts, D., Woods, P., Britting, A., Eyrich, W., Lehmann, A., Uhlig, F., Dobbs, S., Seth, K., Tomaradze, A., Xiao, T., Bettoni, D., Carassiti, V., Ramusino, A. Cotta, Dalpiaz, P., Drago, A., Fioravanti, E., Garzia, I., Savriè, M., Stancari, G., Akishina, V., Kisel, I., Kulakov, I., Zyzak, M., Arora, R., Bel, T., Gromliuk, A., Kalicy, G., Krebs, M., Patsyuk, M., Zuehlsdorf, M., Bianchi, N., Gianotti, P., Guaraldo, C., Lucherini, V., Pace, E., Bersani, A., Bracco, G., Macri, M., Parodi, R. F., Bianco, S., Bremer, D., Brinkmann, K. T., Diehl, S., Dormenev, V., Drexler, P., Düren, M., Eissner, T., Etzelmüller, E., Föhl, K., Galuska, M., Gessler, T., Gutz, E., Hayrapetyan, A., Hu, J., Kröck, B., Kühn, W., Kuske, T., Lange, S., Liang, Y., Merle, O., Metag, V., Mülhheim, D., Münchow, D., Nanova, M., Novotny, R., Pitka, A., Quagli, T., Rieke, J., Rosenbaum, C., Schnell, R., Spruck, B., Stenzel, H., Thöring, U., Ullrich, M., Wasem, T., Werner, M., Zaunick, H. G., Ireland, D., Rosner, G., Seitz, B., Deepak, P. N., Kulkarni, A. V., Apostolou, A., Babai, M., Kavatsyuk, M., Lemmens, P., Lindemulder, M., Löhner, H., Messchendorp, J., Schakel, P., Smit, H., van der Weele, J. C., Tiemens, M., Veenstra, R., Vejdani, S., Kalita, K., Mohanta, D. P., Kumar, A., Roy, A., Sahoo, R., Sohlbach, H., Büscher, M., Cao, L., Cebulla, A., Deermann, D., Dosdall, R., Esch, S., Georgadze, I., Gillitzer, A., Goerres, A., Goldenbaum, F., Grunwald, D., Herten, A., Hu, Q., Kemmerling, G., Kleines, H., Kozlov, V., Lehrach, A., Leiber, S., Maier, R., Nellen, R., Ohm, H., Orfanitski, S., Prasuhn, D., Prencipe, E., Ritman, J., Schadmand, S., Schumann, J., Sefzick, T., Serdyuk, V., Sterzenbach, G., Stockmanns, T., Wintz, P., Wüstner, P., Xu, H., Li, S., Li, Z., Sun, Z., Rigato, V., Fissum, S., Hansen, K., Isaksson, L., Lundin, M., Schröder, B., Achenbach, P., Bleser, S., Cardinali, M., Corell, O., Deiseroth, M., Denig, A., Distler, M., Feldbauer, F., Fritsch, M., Jasinski, P., Hoek, M., Kangh, D., Karavdina, A., Lauth, W., Leithoff, H., Merkel, H., Michel, M., Motzko, C., Müller, U., Noll, O., Plueger, S., Pochodzalla, J., Sanchez, S., Schlimme, S., Sfienti, C., Steinen, M., Thiel, M., Weber, T., Zambrana, M., Dormenev, V. I., Fedorov, A. A., Korzihik, M. V., Missevitch, O. V., Balanutsa, P., Balanutsa, V., Chernetsky, V., Demekhin, A., Dolgolenko, A., Fedorets, P., Gerasimov, A., Goryachev, V., Varentsov, V., Boukharov, A., Malyshev, O., Marishev, I., Semenov, A., Konorov, I., Paul, S., Grieser, S., Hergemöller, A. K., Khoukaz, A., Köhler, E., Täschner, A., Wessels, J., Dash, S., Jadhav, M., Kumar, S., Sarin, P., Varma, R., Chandratre, V. B., Datar, V., Dutta, D., Jha, V., Kumawat, H., Mohanty, A. K., Roy, B., Yan, Y., Chinorat, K., Khanchai, K., Ayut, L., Pornrad, S., Barnyakov, A. Y., Blinov, A. E., Blinov, V. E., Bobrovnikov, V. S., Kononov, S. A., Kravchenko, E. A., Kuyanov, I. A., Onuchin, A. P., Sokolov, A. A., Tikhonov, Y. A., Atomssa, E., Hennino, T., Imre, M., Kunne, R., Galliard, C. Le, Ma, B., Marchand, D., Ong, S., Ramstein, B., Rosier, P., Tomasi-Gustafsson, E., Van de Wiele, J., Boca, G., Costanza, S., Genova, P., Lavezzi, L., Montagna, P., Rotondi, A., Abramov, V., Belikov, N., Bukreeva, S., Davidenko, A., Derevschikov, A., Goncharenko, Y., Grishin, V., Kachanov, V., Kormilitsin, V., Melnik, Y., Levin, A., Minaev, N., Mochalov, V., Morozov, D., Nogach, L., Poslavskiy, S., Ryazantsev, A., Ryzhikov, S., Semenov, P., Shein, I., Uzunian, A., Vasiliev, A., Yakutin, A., Yabsley, B., Bäck, T., Cederwall, B., Makónyi, K., Tegnér, P. E., von Würtemberg, K. M., Belostotski, S., Gavrilov, G., Izotov, A., Kashchuk, A., Levitskaya, O., Manaenkov, S., Miklukho, O., Naryshkin, Y., Suvorov, K., Veretennikov, D., Zhadanov, A., Rai, A. K., Godre, S. S., Duchat, R., Amoroso, A., Bussa, M. P., Busso, L., De Mori, F., Destefanis, M., Fava, L., Ferrero, L., Greco, M., Maggiora, M., Maniscalco, G., Marcello, S., Sosio, S., Spataro, S., Zotti, L., Calvo, D., Coli, S., De Remigis, P., Filippi, A., Giraudo, G., Lusso, S., Mazza, G., Mingnore, M., Rivetti, A., Wheadon, R., Balestra, F., Iazzi, F., Introzzi, R., Lavagno, A., Younis, H., Birsa, R., Bradamante, F., Bressan, A., Martin, A., Clement, H., Gålnander, B., Balkeståhl, L. Caldeira, Calén, H., Fransson, K., Johansson, T., Kupsc, A., Marciniewski, P., Pettersson, J., Schönning, K., Wolke, M., Zlomanczuk, J., Díaz, J., Ortiz, A., Vinodkumar, P. C., Parmar, A., Chlopik, A., Melnychuk, D., Slowinski, B., Trzcinski, A., Wojciechowski, M., Wronka, S., Zwieglinski, B., Bühler, P., Marton, J., Suzuki, K., Widmann, E., Zmeskal, J., Fröhlich, B., Khaneft, D., Lin, D., Zimmermann, I., and Semenov-Tian-Shansky, K.

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

Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address the possibility of accessing nucleon-to-pion ($\pi N$) TDAs from $\bar{p}p \to e^+e^- \pi^0$ reaction with the future \={P}ANDA detector at the FAIR facility. At high center of mass energy and high invariant mass squared of the lepton pair $q^2$, the amplitude of the signal channel $\bar{p}p \to e^+e^- \pi^0$ admits a QCD factorized description in terms of $\pi N$ TDAs and nucleon Distribution Amplitudes (DAs) in the forward and backward kinematic regimes. Assuming the validity of this factorized description, we perform feasibility studies for measuring $\bar{p}p \to e^+e^- \pi^0$ with the \={P}ANDA detector. Detailed simulations on signal reconstruction efficiency as well as on rejection of the most severe background channel, i.e. $\bar{p}p \to \pi^+\pi^- \pi^0$ were performed for the center of mass energy squared $s = 5$ GeV$^2$ and $s = 10$ GeV$^2$, in the kinematic regions $3.0 < q^2 < 4.3$ GeV$^2$ and $5 < q^2 < 9$ GeV$^2$, respectively, with a neutral pion scattered in the forward or backward cone $| \cos\theta_{\pi^0}| > 0.5 $ in the proton-antiproton center of mass frame. Results of the simulation show that the particle identification capabilities of the \={P}ANDA detector will allow to achieve a background rejection factor of $5\cdot 10^7$ ($1\cdot 10^7$) at low (high) $q^2$ for $s=5$ GeV$^2$, and of $1\cdot 10^8$ ($6\cdot 10^6$) at low (high) $q^2$ for $s=10$ GeV$^2$, while keeping the signal reconstruction efficiency at around $40\%$. At both energies, a clean lepton signal can be reconstructed with the expected statistics corresponding to $2$ fb$^{-1}$ of integrated luminosity. (.../...), Comment: 19 pages, 7 figures (some multiple), 2 tables (each double), preprint of an article for epj - v2

Published
2014

38. ABC Effect and Resonance Structure in the Double-Pionic Fusion to $^3$He

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Coderre, D., Czerwiński, E., Demmich, K., Doroshkevich, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goslawski, P., Goswami, A., Grigoryev, K., Gullström, C. --O., Hauenstein, F., Heijkenskjöld, L., Hejny, V., Höistad, B., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khoukaz, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Mikirtychiants, M., Morsch, H. -P., Moskal, P., Ohm, H., Ozerianska, I., del Rio, E. Perez, Piskunov, N. M., Podkopał, P., Prasuhn, D., Pricking, A., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Shwartz, B., Siudak, R., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Täschner, A., Trzciński, A., Varma, R., Wagner, G. J., Wolke, M., Wrońska, A., Wüstner, P., Wurm, P., Yamamoto, A., Yurev, L., Zabierowski, J., Zieliński, M. J., Zink, A., Złomańczuk, J., Żuprański, P., and Żurek, M.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

Exclusive and kinematically complete measurements of the double pionic fusion to $^3$He have been performed in the energy region of the so-called ABC effect, which denotes a pronounced low-mass enhancement in the $\pi\pi$-invariant mass spectrum. The experiments were carried out with the WASA detector setup at COSY. Similar to the observations in the basic $pn \to d \pi^0\pi^0$ reaction and in the $dd \to ^4$He$\pi^0\pi^0$ reaction, the data reveal a correlation between the ABC effect and a resonance-like energy dependence in the total cross section. Differential cross sections are well described by the hypothesis of $d^*$ resonance formation during the reaction process in addition to the conventional $t$-channel $\Delta\Delta$ mechanism. The deduced $d^*$ resonance width can be understood from collision broadening due to Fermi motion of the nucleons in initial and final nuclei.

Published
2014
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39. Neutron-Proton Scattering in the Context of the $d^*$(2380) Resonance

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Büscher, M., Calén, H., Ciepał, I., Clement, H., Coderre, D., Czerwiński, E., Demmich, K., Doroshkevich, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goslawski, P., Goswami, A., Grigoryev, K., Gullström, C. --O., Hauenstein, F., Heijkenskjöld, L., Hejny, V., Hodana, M., Höistad, B., Hüsken, N., Jany, A., Jany, B. R., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khoukaz, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krapp, M., Krzemień, W., Kulessa, P., Kupść, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Mikirtychiants, M., Morsch, H. --P., Moskal, P., Ohm, H., Ozerianska, I., del Rio, E. Perez, Piskunov, N. M., Podkopał, P., Prasuhn, D., Pricking, A., Pszczel, D., Pysz, K., Pyszniak, A., Redmer, C. F., Ritman, J., Roy, A., Rudy, Z., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Siudak, R., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Täschner, A., Trzciński, A., Varma, R., Wagner, G. J., Wolke, M., Wrońska, A., Wüstner, P., Wurm, P., Yamamoto, A., Yurev, L., Zabierowski, J., Zieliński, M. J., Zink, A., Złomańczuk, J., {Ż}uprański, P., {Ż}urek, M., Workman, R. L., Briscoe, W. J., and Strakovsky, I. I.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

New data on quasifree polarized neutron-proton scattering, in the region of the recently observed $d^*$ resonance structure, have been obtained by exclusive and kinematically complete high-statistics measurements with WASA at COSY. This paper details the determination of the beam polarization, checks of the quasifree character of the scattering process, on all obtained $A_y$ angular distributions and on the new partial-wave analysis, which includes the new data producing a resonance pole in the $^3D_3$-$^3G_3$ coupled partial waves at ($2380\pm10 - i40\pm5$) MeV -- in accordance with the $d^*$ dibaryon resonance hypothesis. The effect of the new partial-wave solution on the description of total and differential cross section data as well as specific combinations of spin-correlation and spin-transfer observables available from COSY-ANKE measurements at $T_d$ = 2.27 GeV is discussed.

Published
2014
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40. Toward polarized antiprotons: Machine development for spin-filtering experiments

Author

Weidemann, C., Rathmann, F., Stein, H. J., Lorentz, B., Bagdasarian, Z., Barion, L., Barsov, S., Bechstedt, U., Bertelli, S., Chiladze, D., Ciullo, G., Contalbrigo, M., Dymov, S., Engels, R., Gaisser, M., Gebel, R., Goslawski, P., Grigoriev, K., Guidoboni, G., Kacharava, A., Kamerdzhiev, V., Khoukaz, A., Kulikov, A., Lehrach, A., Lenisa, P., Lomidze, N., Macharashvili, G., Maier, R., Martin, S., Mchedlishvili, D., Meyer, H. O., Merzliakov, S., Mielke, M., Mikirtychiants, M., Mikirtychiants, S., Nass, A., Nikolaev, N. N., Oellers, D., Papenbrock, M., Pesce, A., Prasuhn, D., Retzlaff, M., Schleichert, R., Schröer, D., Seyfarth, H., Soltner, H., Statera, M., Steffens, E., Stockhorst, H., Ströher, H., Tabidze, M., Tagliente, G., Engblom, P. Thörngren, Trusov, S., Valdau, Yu., Vasiliev, A., and Wüstner, P.

Subjects
Physics - Accelerator Physics, Nuclear Experiment
Abstract

The paper describes the commissioning of the experimental equipment and the machine studies required for the first spin-filtering experiment with protons at a beam kinetic energy of $49.3\,$MeV in COSY. The implementation of a low-$\beta$ insertion made it possible to achieve beam lifetimes of $\tau_{\rm{b}}=8000\,$s in the presence of a dense polarized hydrogen storage-cell target of areal density $d_{\rm t}=(5.5\pm 0.2)\times 10^{13}\,\mathrm{atoms/cm^{2}}$. The developed techniques can be directly applied to antiproton machines and allow for the determination of the spin-dependent $\bar{p}p$ cross sections via spin filtering.

Published
2014
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41. Charge Symmetry Breaking in dd->4He{\pi}0 with WASA-at-COSY

Author

Collaboration, WASA-at-COSY, Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Coderre, D., Czerwiński, E., Demmich, K., Doroshkevich, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goslawski, P., Goswami, A., Grigoryev, K., Gullström, C. -O., Hanhart, C., Hauenstein, F., Heijkenskjöld, L., Hejny, V., Höistad, B., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khoukaz, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Mikirtychiants, M., Morsch, H. -P., Moskal, P., Ohm, H., Ozerianska, I., del Rio, E. Perez, Piskunov, N. M., Podkopał, P., Prasuhn, D., Pricking, A., Pszczel, D., Pysz, K., Pyszniak, A., Redmer, C. F., Ritman, J., Roy, A., Rudy, Z., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Shwartz, B., Siudak, R., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Täschner, A., Trzciński, A., Varma, R., Wolke, M., Wrońska, A., Wüstner, P., Wurm, P., Yamamoto, A., Yurev, L., Zabierowski, J., Zieliński, M. J., Zink, A., Złomańczuk, J., Żuprański, P., and Żurek, M.

Subjects
Nuclear Experiment
Abstract

Charge symmetry breaking (CSB) observables are a suitable experimental tool to examine effects induced by quark masses on the nuclear level. Previous high precision data from TRIUMF and IUCF are currently used to develop a consistent description of CSB within the framework of chiral perturbation theory. In this work the experimental studies on the reaction dd->4He{\pi}0 have been extended towards higher excess energies in order to provide information on the contribution of p-waves in the final state. For this, an exclusive measurement has been carried out at a beam momentum of p=1.2 GeV/c using the WASA-at-COSY facility. The total cross section amounts to sigma(tot) = (118 +- 18(stat) +- 13(sys) +- 8(ext)) pb and first data on the differential cross section are consistent with s-wave pion production., Comment: 14 pages, 5 figures

Published
2014
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42. Measurement of the $\eta\to\pi^+\pi^-\pi^0$ Dalitz plot distribution

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Coderre, D., Czerwiński, E., Demmich, K., Doroshkevich, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goslawski, P., Goswami, A., Grigoryev, K., Gullström, C. -O., Hauenstein, F., Heijkenskjöld, L., Hejny, V., Hodana, M., Höistad, B., Hüsken, N., Jany, A., Jany, B. R., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khoukaz, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Martemyanov, B. V., Meißner, U. -G., Mikirtychiants, M., Morsch, H. -P., Moskal, P., Ohm, H., Ozerianska, I., del Rio, E. Perez, Piskunov, N. M., Podkopał, P., Prasuhn, D., Pricking, A., Pszczel, D., Pysz, K., Pyszniak, A., Redmer, C. F., Ritman, J., Roy, A., Rudy, Z., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Shwartz, B., Siudak, R., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Täschner, A., Trzciński, A., Varma, R., Wolke, M., Wrońska, A., Wüstner, P., Wurm, P., Yamamoto, A., Yuan, X., Yurev, L., Zabierowski, J., Zheng, C., Zieliński, M. J., Zink, A., Złomańczuk, J., Żuprański, P., and Żurek, M.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

Dalitz plot distribution of the $\eta\to\pi^+\pi^-\pi^0$ decay is determined using a data sample of $1.2\cdot 10^7$ $\eta$ mesons from $pd\to ^3\textrm{He}\eta$ reaction at 1 GeV collected by the WASA detector at COSY., Comment: 13 pages, 6 figures

Published
2014
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43. Measuring the Polarization of a Rapidly Precessing Deuteron Beam

Author

Bagdasarian, Z., Bertelli, S., Chiladze, D., Ciullo, G., Dietrich, J., Dymov, S., Eversmann, D., Fanourakis, G., Gaisser, M., Gebel, R., Gou, B., Guidoboni, G., Hejny, V., Kacharava, A., Kamerdzhiev, V., Lehrach, A., Lenisa, P., Lorentz, B., Magallanes, L., Maier, R., Mchedlishvili, D., Morse, W. M., Nass, A., Oellers, D., Pesce, A., Prasuhn, D., Pretz, J., Rathmann, F., Shmakova, V., Semertzidis, Y. K., Stephenson, E. J., Stockhorst, H., Ströher, H., Talman, R., Engblom, P. Thörngren, Valdau, Yu., Weidemann, C., and Wüstner, P.

Subjects
Physics - Accelerator Physics
Abstract

This paper describes a time-marking system that enables a measurement of the in-plane (horizontal) polarization of a 0.97-GeV/c deuteron beam circulating in the Cooler Synchrotron (COSY) at the Forschungszentrum J\"ulich. The clock time of each polarimeter event is used to unfold the 120-kHz spin precession and assign events to bins according to the direction of the horizontal polarization. After accumulation for one or more seconds, the down-up scattering asymmetry can be calculated for each direction and matched to a sinusoidal function whose magnitude is proportional to the horizontal polarization. This requires prior knowledge of the spin tune or polarization precession rate. An initial estimate is refined by re-sorting the events as the spin tune is adjusted across a narrow range and searching for the maximum polarization magnitude. The result is biased toward polarization values that are too large, in part because of statistical fluctuations but also because sinusoidal fits to even random data will produce sizeable magnitudes when the phase is left free to vary. An analysis procedure is described that matches the time dependence of the horizontal polarization to templates based on emittance-driven polarization loss while correcting for the positive bias. This information will be used to study ways to extend the horizontal polarization lifetime by correcting spin tune spread using ring sextupole fields and thereby to support the feasibility of searching for an intrinsic electric dipole moment using polarized beams in a storage ring. This paper is a combined effort of the Storage Ring EDM Collaboration and the JEDI Collaboration., Comment: 28 pages, 15 figures, prepared for Physical Review ST - Accelerators and Beams

Published
2014
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44. Evidence for a New Resonance from Polarized Neutron-Proton Scattering

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bhatt, H., Buescher, M., Ciepa, H. Calen. I., Clement, H., Coderre, D., Czerwinski, E., Demmich, K., Doroshkevich, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Foehl, K., Fransson, K., Goldenbaum, F., Goslawski, P., Goswami, A., Grigoyev, K., Gullstroem, C. -O., Hauenstein, F., Heijkenskjoeld, L., Hejny, V., Hodana, M., Hoistad, B., Huesken, N., Jany, A., Jany, B. R., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khoukaz, A., Kirrilov, D. A., Kistryn, S., Kleines, H., Klos, B., Krapp, M., Krzemien, W., Kulessa, P., Kupsc, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Marianski, B., Mikirtychiants, M., Morsch, H. -P., Moskal, P., Ohm, H., Ozerianska, I., del Rio, E. Perez, Piskunov, N. M., Podkopal, P., Prasuhn, D., Pricking, A., Pszczel, D., Pysz, K., Pysniak, A., Redmer, C. F., Ritman, J., Roy, A., Rudy, Z., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Siudak, R., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Taeschner, A., Trzcinski, A., Varma, R., Wagner, G. J., Wolke, M., Wronska, A., Wuestner, P., Wurm, P., Yamamoto, A., Yurev, L., Zabierowski, J., Zielinski, M. J., Zink, A., Zlomanczuk, J., Zupranski, P., Zurek, M., Workman, R. L., Briscoe, W. J., and Strakovsky, I. I.

Subjects
Nuclear Experiment
Abstract

Exclusive and kinematically complete high-statistics measurements of quasifree polarized $\vec{n}p$ scattering have been performed in the energy region of the narrow resonance structure $d^*$ with $I(J^P) = 0(3^+)$, $M \approx$ 2380 MeV/$c^2$ and $\Gamma \approx$ 70 MeV observed recently in the double-pionic fusion channels $pn \to d\pi^0\pi^0$ and $pn \to d\pi^+\pi^-$. The experiment was carried out with the WASA detector setup at COSY having a polarized deuteron beam impinged on the hydrogen pellet target and utilizing the quasifree process $\vec{d}p \to np + p_{spectator}$. That way the $np$ analyzing power $A_y$ was measured over a large angular range. The obtained $A_y$ angular distributions deviate systematically from the current SAID SP07 NN partial-wave solution. Incorporating the new $A_y$ data into the SAID analysis produces a pole in the $^3D_3 - ^3G_3$ waves as expected from the $d^*$ resonance hypothesis.

Published
2014
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45. Cross section ratio and angular distributions of the reaction p + d -> 3He + eta at 48.8 MeV and 59.8 MeV excess energy

Author

Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bhatt, H., Büscher, M., Calén, H., Ciepał, I., Clement, H., Coderre, D., Czerwiński, E., Demmich, K., Doroshkevich, E., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goslawski, P., Goswami, A., Grigoryev, K., Gullström, C. -O., Hauenstein, F., Heijkenskjöld, L., Hejny, V., Hodana, M., Höistad, B., Hüsken, N., Jany, A., Jany, B. R., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khan, F. A., Khoukaz, A., Kirillov, D. A., Kistryn, S., Kłos, B., Kleines, H., Krapp, M., Krzemień, W., Kulessa, P., Kupść, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Mikirtychiants, M., Morsch, H. --P., Moskal, P., Ohm, H., Ozerianska, I., Passfeld, A., del Rio, E. Perez, Piskunov, N. M., Podkopał, P., Prasuhn, D., Pricking, A., Pszczel, D., Pysz, K., Pyszniak, A., Redmer, C. F., Ritman, J., Roy, A., Rudy, Z., Sawant, S., Schadmand, S., Sefzick, T., Serdyuk, V., Siudak, R., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Täschner, A., Trzciński, A., Varma, R., Wagner, G. J., Węglorz, W., Wolke, M., Wrońska, A., Wüstner, P., Wurm, P., Yamamoto, A., Yurev, L., Zabierowski, J., Zieliński, M. J., Zink, A., Złomańczuk, J., Żuprański, P., and Żurek, M.

Subjects
Nuclear Experiment
Abstract

We present new data for angular distributions and on the cross section ratio of the p + d -> 3He + eta reaction at excess energies of Q = 48.8 MeV and Q = 59.8 MeV. The data have been obtained at the WASA-at-COSY experiment (Forschungszentrum J\"ulich) using a proton beam and a deuterium pellet target. While the shape of obtained angular distributions show only a slow variation with the energy, the new results indicate a distinct and unexpected total cross section fluctuation between Q = 20 MeV and Q = 60 MeV, which might indicate the variation of the production mechanism within this energy interval., Comment: 9 pages, 9 figures

Published
2014
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46. Management of complicated diaphragmatic hernia in the acute setting: a WSES position paper

Author

Giuffrida, M, Perrone, G, Abu-Zidan, F, Agnoletti, V, Ansaloni, L, Baiocchi, G, Bendinelli, C, Biffl, W, Bonavina, L, Bravi, F, Carcoforo, P, Ceresoli, M, Chichom-Mefire, A, Coccolini, F, Coimbra, R, De'Angelis, N, de Moya, M, De Simone, B, Di Saverio, S, Fraga, G, Galante, J, Ivatury, R, Kashuk, J, Kelly, M, Kirkpatrick, A, Kluger, Y, Koike, K, Leppaniemi, A, Maier, R, Moore, E, Peitzmann, A, Sakakushev, B, Sartelli, M, Sugrue, M, Tian, B, Broek, R, Vallicelli, C, Wani, I, Weber, D, Docimo, G, Catena, F, Giuffrida M., Perrone G., Abu-Zidan F., Agnoletti V., Ansaloni L., Baiocchi G. L., Bendinelli C., Biffl W. L., Bonavina L., Bravi F., Carcoforo P., Ceresoli M., Chichom-Mefire A., Coccolini F., Coimbra R., de'Angelis N., de Moya M., De Simone B., Di Saverio S., Fraga G. P., Galante J., Ivatury R., Kashuk J., Kelly M. D., Kirkpatrick A. W., Kluger Y., Koike K., Leppaniemi A., Maier R. V., Moore E. E., Peitzmann A., Sakakushev B., Sartelli M., Sugrue M., Tian B. W. C. A., Broek R. T., Vallicelli C., Wani I., Weber D. G., Docimo G., Catena F., Giuffrida, M, Perrone, G, Abu-Zidan, F, Agnoletti, V, Ansaloni, L, Baiocchi, G, Bendinelli, C, Biffl, W, Bonavina, L, Bravi, F, Carcoforo, P, Ceresoli, M, Chichom-Mefire, A, Coccolini, F, Coimbra, R, De'Angelis, N, de Moya, M, De Simone, B, Di Saverio, S, Fraga, G, Galante, J, Ivatury, R, Kashuk, J, Kelly, M, Kirkpatrick, A, Kluger, Y, Koike, K, Leppaniemi, A, Maier, R, Moore, E, Peitzmann, A, Sakakushev, B, Sartelli, M, Sugrue, M, Tian, B, Broek, R, Vallicelli, C, Wani, I, Weber, D, Docimo, G, Catena, F, Giuffrida M., Perrone G., Abu-Zidan F., Agnoletti V., Ansaloni L., Baiocchi G. L., Bendinelli C., Biffl W. L., Bonavina L., Bravi F., Carcoforo P., Ceresoli M., Chichom-Mefire A., Coccolini F., Coimbra R., de'Angelis N., de Moya M., De Simone B., Di Saverio S., Fraga G. P., Galante J., Ivatury R., Kashuk J., Kelly M. D., Kirkpatrick A. W., Kluger Y., Koike K., Leppaniemi A., Maier R. V., Moore E. E., Peitzmann A., Sakakushev B., Sartelli M., Sugrue M., Tian B. W. C. A., Broek R. T., Vallicelli C., Wani I., Weber D. G., Docimo G., and Catena F.

Abstract

BACKGROUND: Diaphragmatic hernia (DH) presenting acutely can be a potentially life-threatening condition. Its management continues to be debatable. METHODS: A bibliographic search using major databases was performed using the terms "emergency surgery" "diaphragmatic hernia," "traumatic diaphragmatic rupture" and "congenital diaphragmatic hernia." GRADE methodology was used to evaluate the evidence and give recommendations. RESULTS: CT scan of the chest and abdomen is the diagnostic gold standard to evaluate complicated DH. Appropriate preoperative assessment and prompt surgical intervention are important for a clinical success. Complicated DH repair is best performed via the use of biological and bioabsorbable meshes which have proven to reduce recurrence. The laparoscopic approach is the preferred technique in hemodynamically stable patients without significant comorbidities because it facilitates early diagnosis of small diaphragmatic injuries from traumatic wounds in the thoraco-abdominal area and reduces postoperative complications. Open surgery should be reserved for situations when skills and equipment for laparoscopy are not available, where exploratory laparotomy is needed, or if the patient is hemodynamically unstable. Damage Control Surgery is an option in the management of critical and unstable patients. CONCLUSIONS: Complicated diaphragmatic hernia is a rare life-threatening condition. CT scan of the chest and abdomen is the gold standard for diagnosing the diaphragmatic hernia. Laparoscopic repair is the best treatment option for stable patients with complicated diaphragmatic hernias. Open repair is considered necessary in majority of unstable patients in whom Damage Control Surgery can be life-saving.

Published
2023

47. Test beam performance of a CBC3-based mini-module for the Phase-2 CMS Outer Tracker before and after neutron irradiation

Author

Adam, W, Bergauer, T, Damanakis, K, Dragicevic, M, Fruhwirth, R, Steininger, H, Beaumont, W, Darwish, M, Janssen, T, Kello, T, Rejeb Sfar, H, Van Mechelen, P, Breugelmans, N, Delcourt, M, De Moor, A, D'Hondt, J, Heyen, F, Lowette, S, Makarenko, I, Muller, D, Sahasransu, A, Vannerom, D, Van Putte, S, Allard, Y, Clerbaux, B, Dansana, S, De Lentdecker, G, Evard, H, Favart, L, Hohov, D, Khalilzadeh, A, Lee, K, Mahdavikhorrami, M, Malara, A, Paredes, S, Postiau, N, Robert, F, Thomas, L, Vanden Bemden, M, Vanlaer, P, Yang, Y, Benecke, A, Bruno, G, Bury, F, Caputo, C, De Favereau, J, Delaere, C, Donertas, I, Giammanco, A, Jaffel, K, Jain, S, Lemaitre, V, Mondal, K, Szilasi, N, Tran, T, Wertz, S, Calligaris, L, Brigljevic, V, Chitroda, B, Ferencek, D, Mishra, S, Starodumov, A, Susa, T, Brucken, E, Lampen, T, Martikainen, L, Tuominen, E, Karadzhinova-Ferrer, A, Luukka, P, Petrow, H, Tuuva, T, Agram, J, Andrea, J, Apparu, D, Bloch, D, Bonnin, C, Brom, J, Chabert, E, Charles, L, Collard, C, Dangelser, E, Falke, S, Goerlach, U, Gross, L, Haas, C, Krauth, M, Ollivier-Henry, N, Baulieu, G, Bonnevaux, A, Boudoul, G, Caponetto, L, Chanon, N, Contardo, D, Dupasquier, T, Galbit, G, Marchisone, M, Mirabito, L, Nodari, B, Schibler, E, Schirra, F, Vander Donckt, M, Viret, S, Botta, V, Ebisch, C, Feld, L, Karpinski, W, Klein, K, Lipinski, M, Louis, D, Meuser, D, Ozen, I, Pauls, A, Pierschel, G, Rowert, N, Teroerde, M, Wlochal, M, Dziwok, C, Fluegge, G, Pooth, O, Stahl, A, Ziemons, T, Agah, A, Bhattacharya, S, Blekman, F, Campbell, A, Cardini, A, Cheng, C, Consuegra Rodriguez, S, Eckerlin, G, Eckstein, D, Gallo, E, Guthoff, M, Kleinwort, C, Mankel, R, Maser, H, Muhl, C, Mussgiller, A, Nurnberg, A, Otarid, Y, Perez Adan, D, Petersen, H, Rastorguev, D, Reichelt, O, Schutze, P, Sreelatha Pramod, L, Stever, R, Velyka, A, Ventura Barroso, A, Walsh, R, Zuber, A, Albrecht, A, Antonello, M, Biskop, H, Buhmann, P, Connor, P, Garutti, E, Hajheidari, M, Haller, J, Hinzmann, A, Jabusch, H, Kasieczka, G, Klanner, R, Kutzner, V, Lange, J, Martens, S, Mrowietz, M, Nissan, Y, Pena, K, Raciti, B, Schleper, P, Schwandt, J, Steinbruck, G, Tews, A, Wellhausen, J, Ardila, L, Balzer, M, Barvich, T, Berger, B, Butz, E, Caselle, M, Dierlamm, A, Elicabuk, U, Fuchs, M, Hartmann, F, Husemann, U, Kosker, G, Koppenhofer, R, Maier, S, Mallows, S, Mehner, T, Muller, T, Neufeld, M, Sander, O, Shvetsov, I, Simonis, H, Steck, P, Stockmeier, L, Topko, B, Wittig, F, Anagnostou, G, Assiouras, P, Daskalakis, G, Kazas, I, Kyriakis, A, Loukas, D, Balazs, T, Bartok, M, Marton, K, Sikler, F, Veszpremi, V, Bahinipati, S, Das, A, Mal, P, Nayak, A, Pattanaik, D, Saha, P, Swain, S, Bhardwaj, A, Jain, C, Kumar, A, Kumar, T, Ranjan, K, Saumya, S, Baradia, S, Dutta, S, Palit, P, Saha, G, Sarkar, S, Alibordi, M, Behera, P, Behera, S, Chatterjee, S, Dash, G, Jana, P, Kalbhor, P, Libby, J, Mohammad, M, Pradhan, R, Pujahari, P, Saha, N, Samadhan, K, Sharma, A, Sikdar, A, Singh, R, Verma, S, Vijay, A, Cariola, P, Creanza, D, De Palma, M, De Robertis, G, Di Florio, A, Fiore, L, Loddo, F, Margjeka, I, Mongelli, M, My, S, Silvestris, L, Albergo, S, Costa, S, Di Mattia, A, Potenza, R, Tricomi, A, Tuve, C, Barbagli, G, Bardelli, G, Brianzi, M, Camaiani, B, Cassese, A, Ceccarelli, R, Ciaranfi, R, Ciulli, V, Civinini, C, D'Alessandro, R, Focardi, E, Latino, G, Lenzi, P, Lizzo, M, Meschini, M, Paoletti, S, Papanastassiou, A, Sguazzoni, G, Viliani, L, Cerchi, S, Ferro, F, Robutti, E, Brivio, F, Dinardo, M, Dini, P, Gennai, S, Guzzi, L, Malvezzi, S, Menasce, D, Moroni, L, Pedrini, D, Zuolo, D, Azzi, P, Bacchetta, N, Bortignon, P, Bisello, D, Dorigo, T, Lusiani, E, Tosi, M, Gaioni, L, Manghisoni, M, Ratti, L, Re, V, Riceputi, E, Traversi, G, Asenov, P, Baldinelli, G, Bianchi, F, Bilei, G, Bizzaglia, S, Caprai, M, Checcucci, B, Ciangottini, D, Di Chiaro, A, Fano, L, Farnesini, L, Ionica, M, Magherini, M, Mantovani, G, Mariani, V, Menichelli, M, Morozzi, A, Moscatelli, F, Passeri, D, Piccinelli, A, Placidi, P, Rossi, A, Santocchia, A, Spiga, D, Storchi, L, Tedeschi, T, Turrioni, C, Azzurri, P, Bagliesi, G, Basti, A, Battacharya, R, Beccherle, R, Benvenuti, D, Bianchini, L, Boccali, T, Bosi, F, Bruschini, D, Castaldi, R, Ciocci, M, D'Amante, V, Dell'Orso, R, Donato, S, Giassi, A, Ligabue, F, Magazzu, G, Massa, M, Mazzoni, E, Messineo, A, Moggi, A, Musich, M, Palla, F, Parolia, S, Prosperi, P, Raffaelli, F, Ramirez Sanchez, G, Rizzi, A, Roy Chowdhury, S, Sarkar, T, Spagnolo, P, Tenchini, R, Tonelli, G, Venturi, A, Verdini, P, Bartosik, N, Bellan, R, Coli, S, Costa, M, Covarelli, R, Dellacasa, G, Demaria, N, Garbolino, S, Garrafa Botta, S, Grippo, M, Luongo, F, Mecca, A, Migliore, E, Ortona, G, Pacher, L, Rotondo, F, Tarricone, C, Vagnerini, A, Ahmad, A, Asghar, M, Awais, A, Awan, M, Saleh, M, Calderon, A, Duarte Campderros, J, Fernandez, M, Gomez, G, Gonzalez Sanchez, F, Jaramillo Echeverria, R, Lasaosa, C, Moya, D, Piedra, J, Ruiz Jimeno, A, Scodellaro, L, Vila, I, Virto, A, Vizan Garcia, J, Abbaneo, D, Abbas, M, Ahmed, I, Albert, E, Allongue, B, Almeida, J, Barinoff, M, Batista Lopes, J, Bergamin, G, Blanchot, G, Boyer, F, Caratelli, A, Carnesecchi, R, Ceresa, D, Christiansen, J, Daguin, J, Diamantis, A, Dudek, M, Faccio, F, Frank, N, French, T, Golyzniak, D, Kaplon, J, Kloukinas, K, Koss, N, Kottelat, L, Kovacs, M, Lalic, J, La Rosa, A, Lenoir, P, Loos, R, Marchioro, A, Mastronikolis, A, Mateos Dominguez, I, Mersi, S, Michelis, S, Nedergaard, C, Onnela, A, Orfanelli, S, Pakulski, T, Papadopoulos, A, Perea Albela, F, Perez, A, Perez Gomez, F, Pernot, J, Petagna, P, Piazza, Q, Robin, G, Scarfi, S, Schleidweiler, K, Siegrist, N, Sinani, M, Szidlik, P, Tropea, P, Troska, J, Tsirou, A, Vasey, F, Vrancianu, R, Wlodarczyk, S, Zografos, A, Bertl, W, Bevilacqua, T, Caminada, L, Ebrahimi, A, Erdmann, W, Horisberger, R, Kaestli, H, Kotlinski, D, Lange, C, Langenegger, U, Meier, B, Missiroli, M, Noehte, L, Rohe, T, Streuli, S, Androsov, K, Backhaus, M, Becker, R, Bonomelli, G, Di Calafiori, D, Calandri, A, De Cosa, A, Donega, M, Eble, F, Glessgen, F, Grab, C, Harte, T, Hits, D, Lustermann, W, Niedziela, J, Perovic, V, Reichmann, M, Ristic, B, Roeser, U, Ruini, D, Seidita, R, Sorensen, J, Wallny, R, Bartschi, P, Bosiger, K, Canelli, F, Cormier, K, De Wit, A, Huwiler, M, Jin, W, Jofrehei, A, Kilminster, B, Leontsinis, S, Liechti, S, Macchiolo, A, Maier, R, Molinatti, U, Neutelings, I, Reimers, A, Robmann, P, Sanchez Cruz, S, Takahashi, Y, Wolf, D, Chen, P, Hou, W, Lu, R, Clement, E, Cussans, D, Goldstein, J, Seif El Nasr-Storey, S, Stylianou, N, Walkingshaw Pass, K, Harder, K, Holmberg, M, Manolopoulos, K, Schuh, T, Tomalin, I, Bainbridge, R, Borg, J, Brown, C, Fedi, G, Hall, G, Monk, D, Parker, D, Pesaresi, M, Uchida, K, Coldham, K, Cole, J, Ghorbani, M, Khan, A, Kyberd, P, Reid, I, Bartek, R, Dominguez, A, Huerta Escamilla, C, Uniyal, R, Vargas Hernandez, A, Benelli, G, Coubez, X, Heintz, U, Hinton, N, Hogan, J, Honma, A, Korotkov, A, Li, D, Luo, J, Narain, M, Pervan, N, Russell, T, Sagir, S, Simpson, F, Spencer, E, Tiley, C, Wagenknecht, P, Cannaert, E, Chertok, M, Conway, J, Haza, G, Hemer, D, Jensen, F, Thomson, J, Wei, W, Welton, T, Yohay, R, Zhang, F, Hanson, G, Cooperstein, S, Gerosa, R, Giannini, L, Gu, Y, Krutelyov, S, Sathia, B, Sharma, V, Tadel, M, Vourliotis, E, Yagil, A, Incandela, J, Kyre, S, Masterson, P, Cumalat, J, Ford, W, Hassani, A, Karathanasis, G, Marini, F, Savard, C, Schonbeck, N, Stenson, K, Ulmer, K, Wagner, S, Zipper, N, Alexander, J, Bright-Thonney, S, Chen, X, Cranshaw, D, Duquette, A, Fan, J, Fan, X, Filenius, A, Gadkari, D, Grassi, J, Hogan, S, Kotamnives, P, Lantz, S, Monroy, J, Niendorf, G, Postema, H, Reichert, J, Reid, M, Riley, D, Ryd, A, Smolenski, K, Strohman, C, Thom, J, Wittich, P, Zou, R, Bakshi, A, Berry, D, Burkett, K, Butler, D, Canepa, A, Derylo, G, Dickinson, J, Ghosh, A, Gonzalez, H, Grunendahl, S, Horyn, L, Johnson, M, Klabbers, P, Lei, C, Lipton, R, Los, S, Merkel, P, Nahn, S, Ravera, F, Ristori, L, Rivera, R, Spiegel, L, Uplegger, L, Voirin, E, Zoi, I, Dittmer, S, Escobar Franco, R, Evdokimov, A, Evdokimov, O, Gerber, C, Hackworth, M, Hofman, D, Mills, C, Ozek, B, Roy, T, Rudrabhatla, S, Yoo, J, Alhusseini, M, Bruner, T, Haag, M, Herrmann, M, Nachtman, J, Onel, Y, Snyder, C, Yi, K, Davis, J, Gritsan, A, Kang, L, Kyriacou, S, Maksimovic, P, Sekhar, S, Swartz, M, Vami, T, Anguiano, J, Bean, A, Grove, D, Salvatico, R, Smith, C, Wilson, G, Ivanov, A, Kalogeropoulos, A, Reddy, G, Taylor, R, Bloom, K, Claes, D, Fangmeier, C, Golf, F, Joo, C, Kravchenko, I, Siado, J, Iashvili, I, Kharchilava, A, Nguyen, D, Pekkanen, J, Rappoccio, S, Akpinar, A, Demiragli, Z, Gastler, D, Gkountoumis, P, Hazen, E, Peck, A, Rohlf, J, Li, J, Parker, A, Skinnari, L, Hahn, K, Liu, Y, Noorudhin, S, Basnet, A, Hill, C, Joyce, M, Wei, K, Winer, B, Yates, B, Malik, S, Chawla, R, Das, S, Jones, M, Jung, A, Koshy, A, Liu, M, Negro, G, Schulte, J, Thieman, J, Dolen, J, Parashar, N, Pathak, A, Ecklund, K, Freed, S, Nussbaum, T, Demina, R, Dulemba, J, Hindrichs, O, Gershtein, Y, Halkiadakis, E, Hart, A, Kurup, C, Lath, A, Nash, K, Osherson, M, Schnetzer, S, Stone, R, Ally, D, Fiorendi, S, Harris, J, Holmes, T, Lee, L, Nibigira, E, Spanier, S, Eusebi, R, D'Angelo, P, Johns, W, Harr, R, Poudyal, N, Adam W., Bergauer T., Damanakis K., Dragicevic M., Fruhwirth R., Steininger H., Beaumont W., Darwish M. 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Reichert, J, Reid, M, Riley, D, Ryd, A, Smolenski, K, Strohman, C, Thom, J, Wittich, P, Zou, R, Bakshi, A, Berry, D, Burkett, K, Butler, D, Canepa, A, Derylo, G, Dickinson, J, Ghosh, A, Gonzalez, H, Grunendahl, S, Horyn, L, Johnson, M, Klabbers, P, Lei, C, Lipton, R, Los, S, Merkel, P, Nahn, S, Ravera, F, Ristori, L, Rivera, R, Spiegel, L, Uplegger, L, Voirin, E, Zoi, I, Dittmer, S, Escobar Franco, R, Evdokimov, A, Evdokimov, O, Gerber, C, Hackworth, M, Hofman, D, Mills, C, Ozek, B, Roy, T, Rudrabhatla, S, Yoo, J, Alhusseini, M, Bruner, T, Haag, M, Herrmann, M, Nachtman, J, Onel, Y, Snyder, C, Yi, K, Davis, J, Gritsan, A, Kang, L, Kyriacou, S, Maksimovic, P, Sekhar, S, Swartz, M, Vami, T, Anguiano, J, Bean, A, Grove, D, Salvatico, R, Smith, C, Wilson, G, Ivanov, A, Kalogeropoulos, A, Reddy, G, Taylor, R, Bloom, K, Claes, D, Fangmeier, C, Golf, F, Joo, C, Kravchenko, I, Siado, J, Iashvili, I, Kharchilava, A, Nguyen, D, Pekkanen, J, Rappoccio, S, Akpinar, A, Demiragli, Z, Gastler, D, Gkountoumis, P, Hazen, E, Peck, A, Rohlf, J, Li, J, Parker, A, Skinnari, L, Hahn, K, Liu, Y, Noorudhin, S, Basnet, A, Hill, C, Joyce, M, Wei, K, Winer, B, Yates, B, Malik, S, Chawla, R, Das, S, Jones, M, Jung, A, Koshy, A, Liu, M, Negro, G, Schulte, J, Thieman, J, Dolen, J, Parashar, N, Pathak, A, Ecklund, K, Freed, S, Nussbaum, T, Demina, R, Dulemba, J, Hindrichs, O, Gershtein, Y, Halkiadakis, E, Hart, A, Kurup, C, Lath, A, Nash, K, Osherson, M, Schnetzer, S, Stone, R, Ally, D, Fiorendi, S, Harris, J, Holmes, T, Lee, L, Nibigira, E, Spanier, S, Eusebi, R, D'Angelo, P, Johns, W, Harr, R, Poudyal, N, Adam W., Bergauer T., Damanakis K., Dragicevic M., Fruhwirth R., Steininger H., Beaumont W., Darwish M. R., Janssen T., Kello T., Rejeb Sfar H., Van Mechelen P., Breugelmans N., Delcourt M., De Moor A., D'Hondt J., Heyen F., Lowette S., Makarenko I., Muller D., Sahasransu A. R., Vannerom D., Van Putte S., Allard Y., Clerbaux B., Dansana S., De Lentdecker G., Evard H., Favart L., Hohov D., Khalilzadeh A., Lee K., Mahdavikhorrami M., Malara A., Paredes S., Postiau N., Robert F., Thomas L., Vanden Bemden M., Vanlaer P., Yang Y., Benecke A., Bruno G., Bury F., Caputo C., De Favereau J., Delaere C., Donertas I. S., Giammanco A., Jaffel K., Jain S., Lemaitre V., Mondal K., Szilasi N., Tran T. T., Wertz S., Calligaris L., Brigljevic V., Chitroda B., Ferencek D., Mishra S., Starodumov A., Susa T., Brucken E., Lampen T., Martikainen L., Tuominen E., Karadzhinova-Ferrer A., Luukka P., Petrow H., Tuuva T., Agram J. -L., Andrea J., Apparu D., Bloch D., Bonnin C., Brom J. -M., Chabert E., Charles L., Collard C., Dangelser E., Falke S., Goerlach U., Gross L., Haas C., Krauth M., Ollivier-Henry N., Baulieu G., Bonnevaux A., Boudoul G., Caponetto L., Chanon N., Contardo D., Dupasquier T., Galbit G., Marchisone M., Mirabito L., Nodari B., Schibler E., Schirra F., Vander Donckt M., Viret S., Botta V., Ebisch C., Feld L., Karpinski W., Klein K., Lipinski M., Louis D., Meuser D., Ozen I., Pauls A., Pierschel G., Rowert N., Teroerde M., Wlochal M., Dziwok C., Fluegge G., Pooth O., Stahl A., Ziemons T., Agah A., Bhattacharya S., Blekman F., Campbell A., Cardini A., Cheng C., Consuegra Rodriguez S., Eckerlin G., Eckstein D., Gallo E., Guthoff M., Kleinwort C., Mankel R., Maser H., Muhl C., Mussgiller A., Nurnberg A., Otarid Y., Perez Adan D., Petersen H., Rastorguev D., Reichelt O., Schutze P., Sreelatha Pramod L., Stever R., Velyka A., Ventura Barroso A., Walsh R., Zuber A., Albrecht A., Antonello M., Biskop H., Buhmann P., Connor P., Garutti E., Hajheidari M., Haller J., Hinzmann A., Jabusch H., Kasieczka G., Klanner R., Kutzner V., Lange J., Martens S., Mrowietz M., Nissan Y., Pena K., Raciti B., Schleper P., Schwandt J., Steinbruck G., Tews A., Wellhausen J., Ardila L., Balzer M., Barvich T., Berger B., Butz E., Caselle M., Dierlamm A., Elicabuk U., Fuchs M., Hartmann F., Husemann U., Kosker G., Koppenhofer R., Maier S., Mallows S., Mehner T., Muller T., Neufeld M., Sander O., Shvetsov I., Simonis H. J., Steck P., Stockmeier L., Topko B., Wittig F., Anagnostou G., Assiouras P., Daskalakis G., Kazas I., Kyriakis A., Loukas D., Balazs T., Bartok M., Marton K., Sikler F., Veszpremi V., Bahinipati S., Das A. K., Mal P., Nayak A., Pattanaik D. K., Saha P., Swain S. K., Bhardwaj A., Jain C., Kumar A., Kumar T., Ranjan K., Saumya S., Baradia S., Dutta S., Palit P., Saha G., Sarkar S., Alibordi M., Behera P. K., Behera S. C., Chatterjee S., Dash G., Jana P., Kalbhor P., Libby J., Mohammad M., Pradhan R., Pujahari P. R., Saha N. R., Samadhan K., Sharma A., Sikdar A. K., Singh R., Verma S., Vijay A., Cariola P., Creanza D., De Palma M., De Robertis G., Di Florio A., Fiore L., Loddo F., Margjeka I., Mongelli M., My S., Silvestris L., Albergo S., Costa S., Di Mattia A., Potenza R., Tricomi A., Tuve C., Barbagli G., Bardelli G., Brianzi M., Camaiani B., Cassese A., Ceccarelli R., Ciaranfi R., Ciulli V., Civinini C., D'Alessandro R., Focardi E., Latino G., Lenzi P., Lizzo M., Meschini M., Paoletti S., Papanastassiou A., Sguazzoni G., Viliani L., Cerchi S., Ferro F., Robutti E., Brivio F., Dinardo M. E., Dini P., Gennai S., Guzzi L., Malvezzi S., Menasce D., Moroni L., Pedrini D., Zuolo D., Azzi P., Bacchetta N., Bortignon P., Bisello D., Dorigo T., Lusiani E., Tosi M., Gaioni L., Manghisoni M., Ratti L., Re V., Riceputi E., Traversi G., Asenov P., Baldinelli G., Bianchi F., Bilei G. M., Bizzaglia S., Caprai M., Checcucci B., Ciangottini D., Di Chiaro A., Fano L., Farnesini L., Ionica M., Magherini M., Mantovani G., Mariani V., Menichelli M., Morozzi A., Moscatelli F., Passeri D., Piccinelli A., Placidi P., Rossi A., Santocchia A., Spiga D., Storchi L., Tedeschi T., Turrioni C., Azzurri P., Bagliesi G., Basti A., Battacharya R., Beccherle R., Benvenuti D., Bianchini L., Boccali T., Bosi F., Bruschini D., Castaldi R., Ciocci M. A., D'Amante V., Dell'Orso R., Donato S., Giassi A., Ligabue F., Magazzu G., Massa M., Mazzoni E., Messineo A., Moggi A., Musich M., Palla F., Parolia S., Prosperi P., Raffaelli F., Ramirez Sanchez G., Rizzi A., Roy Chowdhury S., Sarkar T., Spagnolo P., Tenchini R., Tonelli G., Venturi A., Verdini P. G., Bartosik N., Bellan R., Coli S., Costa M., Covarelli R., Dellacasa G., Demaria N., Garbolino S., Garrafa Botta S., Grippo M., Luongo F., Mecca A., Migliore E., Ortona G., Pacher L., Rotondo F., Tarricone C., Vagnerini A., Ahmad A., Asghar M. I., Awais A., Awan M. I. M., Saleh M., Calderon A., Duarte Campderros J., Fernandez M., Gomez G., Gonzalez Sanchez F. J., Jaramillo Echeverria R., Lasaosa C., Moya D., Piedra J., Ruiz Jimeno A., Scodellaro L., Vila I., Virto A. L., Vizan Garcia J. M., Abbaneo D., Abbas M., Ahmed I., Albert E., Allongue B., Almeida J., Barinoff M., Batista Lopes J., Bergamin G., Blanchot G., Boyer F., Caratelli A., Carnesecchi R., Ceresa D., Christiansen J., Daguin J., Diamantis A., Dudek M., Faccio F., Frank N., French T., Golyzniak D., Kaplon J., Kloukinas K., Koss N., Kottelat L., Kovacs M., Lalic J., La Rosa A., Lenoir P., Loos R., Marchioro A., Mastronikolis A., Mateos Dominguez I., Mersi S., Michelis S., Nedergaard C., Onnela A., Orfanelli S., Pakulski T., Papadopoulos A., Perea Albela F., Perez A., Perez Gomez F., Pernot J. -F., Petagna P., Piazza Q., Robin G., Scarfi S., Schleidweiler K., Siegrist N., Sinani M., Szidlik P., Tropea P., Troska J., Tsirou A., Vasey F., Vrancianu R., Wlodarczyk S., Zografos A., Bertl W., Bevilacqua T., Caminada L., Ebrahimi A., Erdmann W., Horisberger R., Kaestli H. -C., Kotlinski D., Lange C., Langenegger U., Meier B., Missiroli M., Noehte L., Rohe T., Streuli S., Androsov K., Backhaus M., Becker R., Bonomelli G., Di Calafiori D., Calandri A., De Cosa A., Donega M., Eble F., Glessgen F., Grab C., Harte T., Hits D., Lustermann W., Niedziela J., Perovic V., Reichmann M., Ristic B., Roeser U., Ruini D., Seidita R., Sorensen J., Wallny R., Bartschi P., Bosiger K., Canelli F., Cormier K., De Wit A., Huwiler M., Jin W., Jofrehei A., Kilminster B., Leontsinis S., Liechti S. P., Macchiolo A., Maier R., Molinatti U., Neutelings I., Reimers A., Robmann P., Sanchez Cruz S., Takahashi Y., Wolf D., Chen P. -H., Hou W. -S., Lu R. -S., Clement E., Cussans D., Goldstein J., Seif El Nasr-Storey S., Stylianou N., Walkingshaw Pass K., Harder K., Holmberg M. -L., Manolopoulos K., Schuh T., Tomalin I. R., Bainbridge R., Borg J., Brown C., Fedi G., Hall G., Monk D., Parker D., Pesaresi M., Uchida K., Coldham K., Cole J., Ghorbani M., Khan A., Kyberd P., Reid I. D., Bartek R., Dominguez A., Huerta Escamilla C., Uniyal R., Vargas Hernandez A. M., Benelli G., Coubez X., Heintz U., Hinton N., Hogan J., Honma A., Korotkov A., Li D., Luo J., Narain M., Pervan N., Russell T., Sagir S., Simpson F., Spencer E., Tiley C., Wagenknecht P., Cannaert E., Chertok M., Conway J., Haza G., Hemer D., Jensen F., Thomson J., Wei W., Welton T., Yohay R., Zhang F., Hanson G., Cooperstein S. B., Gerosa R., Giannini L., Gu Y., Krutelyov S., Sathia B. N., Sharma V., Tadel M., Vourliotis E., Yagil A., Incandela J., Kyre S., Masterson P., Cumalat J. P., Ford W. T., Hassani A., Karathanasis G., Marini F., Savard C., Schonbeck N., Stenson K., Ulmer K. A., Wagner S. R., Zipper N., Alexander J., Bright-Thonney S., Chen X., Cranshaw D., Duquette A., Fan J., Fan X., Filenius A., Gadkari D., Grassi J., Hogan S., Kotamnives P., Lantz S., Monroy J., Niendorf G., Postema H., Reichert J., Reid M., Riley D., Ryd A., Smolenski K., Strohman C., Thom J., Wittich P., Zou R., Bakshi A., Berry D. R., Burkett K., Butler D., Canepa A., Derylo G., Dickinson J., Ghosh A., Gonzalez H., Grunendahl S., Horyn L., Johnson M., Klabbers P., Lei C. M., Lipton R., Los S., Merkel P., Nahn S., Ravera F., Ristori L., Rivera R., Spiegel L., Uplegger L., Voirin E., Zoi I., Dittmer S., Escobar Franco R., Evdokimov A., Evdokimov O., Gerber C. E., Hackworth M., Hofman D. J., Mills C., Ozek B., Roy T., Rudrabhatla S., Yoo J., Alhusseini M., Bruner T., Haag M., Herrmann M., Nachtman J., Onel Y., Snyder C., Yi K., Davis J., Gritsan A., Kang L., Kyriacou S., Maksimovic P., Sekhar S., Swartz M., Vami T., Anguiano J., Bean A., Grove D., Salvatico R., Smith C., Wilson G., Ivanov A., Kalogeropoulos A., Reddy G., Taylor R., Bloom K., Claes D. R., Fangmeier C., Golf F., Joo C., Kravchenko I., Siado J., Iashvili I., Kharchilava A., Nguyen D., Pekkanen J., Rappoccio S., Akpinar A., Demiragli Z., Gastler D., Gkountoumis P., Hazen E., Peck A., Rohlf J., Li J., Parker A., Skinnari L., Hahn K., Liu Y., Noorudhin S., Basnet A., Hill C. S., Joyce M., Wei K., Winer B., Yates B., Malik S., Chawla R., Das S., Jones M., Jung A., Koshy A., Liu M., Negro G., Schulte J. F., Thieman J., Dolen J., Parashar N., Pathak A., Ecklund K. M., Freed S., Nussbaum T., Demina R., Dulemba J., Hindrichs O., Gershtein Y., Halkiadakis E., Hart A., Kurup C., Lath A., Nash K., Osherson M., Schnetzer S., Stone R., Ally D., Fiorendi S., Harris J., Holmes T., Lee L., Nibigira E., Spanier S., Eusebi R., D'Angelo P., Johns W., Harr R., and Poudyal N.

Abstract

The Large Hadron Collider (LHC) at CERN will undergo major upgrades to increase the instantaneous luminosity up to 5-7.5×1034 cm-2s-1. This High Luminosity upgrade of the LHC (HL-LHC) will deliver a total of 3000-4000 fb-1 of proton-proton collisions at a center-of-mass energy of 13-14 TeV. To cope with these challenging environmental conditions, the strip tracker of the CMS experiment will be upgraded using modules with two closely-spaced silicon sensors to provide information to include tracking in the Level-1 trigger selection. This paper describes the performance, in a test beam experiment, of the first prototype module based on the final version of the CMS Binary Chip front-end ASIC before and after the module was irradiated with neutrons. Results demonstrate that the prototype module satisfies the requirements, providing efficient tracking information, after being irradiated with a total fluence comparable to the one expected through the lifetime of the experiment.

Published
2023

48. 2023 WSES guidelines for the prevention, detection, and management of iatrogenic urinary tract injuries (IUTIs) during emergency digestive surgery

Author

De'Angelis, N, Schena, C, Marchegiani, F, Reitano, E, De Simone, B, Wong, G, Martinez-Perez, A, Abu-Zidan, F, Agnoletti, V, Aisoni, F, Ammendola, M, Ansaloni, L, Bala, M, Biffl, W, Ceccarelli, G, Ceresoli, M, Chiara, O, Chiarugi, M, Cimbanassi, S, Coccolini, F, Coimbra, R, Di Saverio, S, Diana, M, Dioguardi Burgio, M, Fraga, G, Gavriilidis, P, Gurrado, A, Inchingolo, R, Ingels, A, Ivatury, R, Kashuk, J, Khan, J, Kirkpatrick, A, Kim, F, Kluger, Y, Lakkis, Z, Leppaniemi, A, Maier, R, Memeo, R, Moore, E, Ordonez, C, Peitzman, A, Pellino, G, Picetti, E, Pikoulis, M, Pisano, M, Podda, M, Romeo, O, Rosa, F, Tan, E, Ten Broek, R, Testini, M, Tian Wei Cheng, B, Weber, D, Sacco, E, Sartelli, M, Tonsi, A, Dal Moro, F, Catena, F, de'Angelis N., Schena C. A., Marchegiani F., Reitano E., De Simone B., Wong G. Y. M., Martinez-Perez A., Abu-Zidan F. M., Agnoletti V., Aisoni F., Ammendola M., Ansaloni L., Bala M., Biffl W., Ceccarelli G., Ceresoli M., Chiara O., Chiarugi M., Cimbanassi S., Coccolini F., Coimbra R., Di Saverio S., Diana M., Dioguardi Burgio M., Fraga G., Gavriilidis P., Gurrado A., Inchingolo R., Ingels A., Ivatury R., Kashuk J. L., Khan J., Kirkpatrick A. W., Kim F. J., Kluger Y., Lakkis Z., Leppaniemi A., Maier R. V., Memeo R., Moore E. E., Ordonez C. A., Peitzman A. B., Pellino G., Picetti E., Pikoulis M., Pisano M., Podda M., Romeo O., Rosa F., Tan E., Ten Broek R. P., Testini M., Tian Wei Cheng B. A., Weber D., Sacco E., Sartelli M., Tonsi A., Dal Moro F., Catena F., De'Angelis, N, Schena, C, Marchegiani, F, Reitano, E, De Simone, B, Wong, G, Martinez-Perez, A, Abu-Zidan, F, Agnoletti, V, Aisoni, F, Ammendola, M, Ansaloni, L, Bala, M, Biffl, W, Ceccarelli, G, Ceresoli, M, Chiara, O, Chiarugi, M, Cimbanassi, S, Coccolini, F, Coimbra, R, Di Saverio, S, Diana, M, Dioguardi Burgio, M, Fraga, G, Gavriilidis, P, Gurrado, A, Inchingolo, R, Ingels, A, Ivatury, R, Kashuk, J, Khan, J, Kirkpatrick, A, Kim, F, Kluger, Y, Lakkis, Z, Leppaniemi, A, Maier, R, Memeo, R, Moore, E, Ordonez, C, Peitzman, A, Pellino, G, Picetti, E, Pikoulis, M, Pisano, M, Podda, M, Romeo, O, Rosa, F, Tan, E, Ten Broek, R, Testini, M, Tian Wei Cheng, B, Weber, D, Sacco, E, Sartelli, M, Tonsi, A, Dal Moro, F, Catena, F, de'Angelis N., Schena C. A., Marchegiani F., Reitano E., De Simone B., Wong G. Y. M., Martinez-Perez A., Abu-Zidan F. M., Agnoletti V., Aisoni F., Ammendola M., Ansaloni L., Bala M., Biffl W., Ceccarelli G., Ceresoli M., Chiara O., Chiarugi M., Cimbanassi S., Coccolini F., Coimbra R., Di Saverio S., Diana M., Dioguardi Burgio M., Fraga G., Gavriilidis P., Gurrado A., Inchingolo R., Ingels A., Ivatury R., Kashuk J. L., Khan J., Kirkpatrick A. W., Kim F. J., Kluger Y., Lakkis Z., Leppaniemi A., Maier R. V., Memeo R., Moore E. E., Ordonez C. A., Peitzman A. B., Pellino G., Picetti E., Pikoulis M., Pisano M., Podda M., Romeo O., Rosa F., Tan E., Ten Broek R. P., Testini M., Tian Wei Cheng B. A., Weber D., Sacco E., Sartelli M., Tonsi A., Dal Moro F., and Catena F.

Abstract

Iatrogenic urinary tract injury (IUTI) is a severe complication of emergency digestive surgery. It can lead to increased postoperative morbidity and mortality and have a long-term impact on the quality of life. The reported incidence of IUTIs varies greatly among the studies, ranging from 0.3 to 1.5%. Given the high volume of emergency digestive surgery performed worldwide, there is a need for well-defined and effective strategies to prevent and manage IUTIs. Currently, there is a lack of consensus regarding the prevention, detection, and management of IUTIs in the emergency setting. The present guidelines, promoted by the World Society of Emergency Surgery (WSES), were developed following a systematic review of the literature and an international expert panel discussion. The primary aim of these WSES guidelines is to provide evidence-based recommendations to support clinicians and surgeons in the prevention, detection, and management of IUTIs during emergency digestive surgery. The following key aspects were considered: (1) effectiveness of preventive interventions for IUTIs during emergency digestive surgery; (2) intra-operative detection of IUTIs and appropriate management strategies; (3) postoperative detection of IUTIs and appropriate management strategies and timing; and (4) effectiveness of antibiotic therapy (including type and duration) in case of IUTIs.

Published
2023

49. ECLAPTE: Effective Closure of LAParoTomy in Emergency-2023 World Society of Emergency Surgery guidelines for the closure of laparotomy in emergency settings

Author

Frassini, S, Cobianchi, L, Fugazzola, P, Biffl, W, Coccolini, F, Damaskos, D, Moore, E, Kluger, Y, Ceresoli, M, Coimbra, R, Davies, J, Kirkpatrick, A, Di Carlo, I, Hardcastle, T, Isik, A, Chiarugi, M, Gurusamy, K, Maier, R, Segovia Lohse, H, Jeekel, H, Boermeester, M, Abu-Zidan, F, Inaba, K, Weber, D, Augustin, G, Bonavina, L, Velmahos, G, Sartelli, M, Di Saverio, S, Ten Broek, R, Granieri, S, Dal Mas, F, Fare, C, Peverada, J, Zanghi, S, Vigano, J, Tomasoni, M, Dominioni, T, Cicuttin, E, Hecker, A, Tebala, G, Galante, J, Wani, I, Khokha, V, Sugrue, M, Scalea, T, Tan, E, Malangoni, M, Pararas, N, Podda, M, De Simone, B, Ivatury, R, Cui, Y, Kashuk, J, Peitzman, A, Kim, F, Pikoulis, E, Sganga, G, Chiara, O, Kelly, M, Marzi, I, Picetti, E, Agnoletti, V, De'Angelis, N, Campanelli, G, de Moya, M, Litvin, A, Martinez-Perez, A, Sall, I, Rizoli, S, Tomadze, G, Sakakushev, B, Stahel, P, Civil, I, Shelat, V, Costa, D, Chichom-Mefire, A, Latifi, R, Chirica, M, Amico, F, Pardhan, A, Seenarain, V, Boyapati, N, Hatz, B, Ackermann, T, Abeyasundara, S, Fenton, L, Plani, F, Sarvepalli, R, Rouhbakhshfar, O, Caleo, P, Ho-Ching Yau, V, Clement, K, Christou, E, Castillo, A, Gosal, P, Balasubramaniam, S, Hsu, J, Banphawatanarak, K, Pisano, M, Adriana, T, Michele, A, Cioffi, S, Spota, A, Catena, F, Ansaloni, L, Frassini S., Cobianchi L., Fugazzola P., Biffl W. L., Coccolini F., Damaskos D., Moore E. E., Kluger Y., Ceresoli M., Coimbra R., Davies J., Kirkpatrick A., Di Carlo I., Hardcastle T. C., Isik A., Chiarugi M., Gurusamy K., Maier R. V., Segovia Lohse H. A., Jeekel H., Boermeester M. A., Abu-Zidan F., Inaba K., Weber D. G., Augustin G., Bonavina L., Velmahos G., Sartelli M., Di Saverio S., Ten Broek R. P. G., Granieri S., Dal Mas F., Fare C. N., Peverada J., Zanghi S., Vigano J., Tomasoni M., Dominioni T., Cicuttin E., Hecker A., Tebala G. D., Galante J. M., Wani I., Khokha V., Sugrue M., Scalea T. M., Tan E., Malangoni M. A., Pararas N., Podda M., De Simone B., Ivatury R., Cui Y., Kashuk J., Peitzman A., Kim F., Pikoulis E., Sganga G., Chiara O., Kelly M. D., Marzi I., Picetti E., Agnoletti V., De'Angelis N., Campanelli G., de Moya M., Litvin A., Martinez-Perez A., Sall I., Rizoli S., Tomadze G., Sakakushev B., Stahel P. F., Civil I., Shelat V., Costa D., Chichom-Mefire A., Latifi R., Chirica M., Amico F., Pardhan A., Seenarain V., Boyapati N., Hatz B., Ackermann T., Abeyasundara S., Fenton L., Plani F., Sarvepalli R., Rouhbakhshfar O., Caleo P., Ho-Ching Yau V., Clement K., Christou E., Castillo A. M. G., Gosal P. K. S., Balasubramaniam S., Hsu J., Banphawatanarak K., Pisano M., Adriana T., Michele A., Cioffi S. P. B., Spota A., Catena F., Ansaloni L., Frassini, S, Cobianchi, L, Fugazzola, P, Biffl, W, Coccolini, F, Damaskos, D, Moore, E, Kluger, Y, Ceresoli, M, Coimbra, R, Davies, J, Kirkpatrick, A, Di Carlo, I, Hardcastle, T, Isik, A, Chiarugi, M, Gurusamy, K, Maier, R, Segovia Lohse, H, Jeekel, H, Boermeester, M, Abu-Zidan, F, Inaba, K, Weber, D, Augustin, G, Bonavina, L, Velmahos, G, Sartelli, M, Di Saverio, S, Ten Broek, R, Granieri, S, Dal Mas, F, Fare, C, Peverada, J, Zanghi, S, Vigano, J, Tomasoni, M, Dominioni, T, Cicuttin, E, Hecker, A, Tebala, G, Galante, J, Wani, I, Khokha, V, Sugrue, M, Scalea, T, Tan, E, Malangoni, M, Pararas, N, Podda, M, De Simone, B, Ivatury, R, Cui, Y, Kashuk, J, Peitzman, A, Kim, F, Pikoulis, E, Sganga, G, Chiara, O, Kelly, M, Marzi, I, Picetti, E, Agnoletti, V, De'Angelis, N, Campanelli, G, de Moya, M, Litvin, A, Martinez-Perez, A, Sall, I, Rizoli, S, Tomadze, G, Sakakushev, B, Stahel, P, Civil, I, Shelat, V, Costa, D, Chichom-Mefire, A, Latifi, R, Chirica, M, Amico, F, Pardhan, A, Seenarain, V, Boyapati, N, Hatz, B, Ackermann, T, Abeyasundara, S, Fenton, L, Plani, F, Sarvepalli, R, Rouhbakhshfar, O, Caleo, P, Ho-Ching Yau, V, Clement, K, Christou, E, Castillo, A, Gosal, P, Balasubramaniam, S, Hsu, J, Banphawatanarak, K, Pisano, M, Adriana, T, Michele, A, Cioffi, S, Spota, A, Catena, F, Ansaloni, L, Frassini S., Cobianchi L., Fugazzola P., Biffl W. L., Coccolini F., Damaskos D., Moore E. E., Kluger Y., Ceresoli M., Coimbra R., Davies J., Kirkpatrick A., Di Carlo I., Hardcastle T. C., Isik A., Chiarugi M., Gurusamy K., Maier R. V., Segovia Lohse H. A., Jeekel H., Boermeester M. A., Abu-Zidan F., Inaba K., Weber D. G., Augustin G., Bonavina L., Velmahos G., Sartelli M., Di Saverio S., Ten Broek R. P. G., Granieri S., Dal Mas F., Fare C. N., Peverada J., Zanghi S., Vigano J., Tomasoni M., Dominioni T., Cicuttin E., Hecker A., Tebala G. D., Galante J. M., Wani I., Khokha V., Sugrue M., Scalea T. M., Tan E., Malangoni M. A., Pararas N., Podda M., De Simone B., Ivatury R., Cui Y., Kashuk J., Peitzman A., Kim F., Pikoulis E., Sganga G., Chiara O., Kelly M. D., Marzi I., Picetti E., Agnoletti V., De'Angelis N., Campanelli G., de Moya M., Litvin A., Martinez-Perez A., Sall I., Rizoli S., Tomadze G., Sakakushev B., Stahel P. F., Civil I., Shelat V., Costa D., Chichom-Mefire A., Latifi R., Chirica M., Amico F., Pardhan A., Seenarain V., Boyapati N., Hatz B., Ackermann T., Abeyasundara S., Fenton L., Plani F., Sarvepalli R., Rouhbakhshfar O., Caleo P., Ho-Ching Yau V., Clement K., Christou E., Castillo A. M. G., Gosal P. K. S., Balasubramaniam S., Hsu J., Banphawatanarak K., Pisano M., Adriana T., Michele A., Cioffi S. P. B., Spota A., Catena F., and Ansaloni L.

Abstract

Laparotomy incisions provide easy and rapid access to the peritoneal cavity in case of emergency surgery. Incisional hernia (IH) is a late manifestation of the failure of abdominal wall closure and represents frequent complication of any abdominal incision: IHs can cause pain and discomfort to the patients but also clinical serious sequelae like bowel obstruction, incarceration, strangulation, and necessity of reoperation. Previous guidelines and indications in the literature consider elective settings and evidence about laparotomy closure in emergency settings is lacking. This paper aims to present the World Society of Emergency Surgery (WSES) project called ECLAPTE (Effective Closure of LAParoTomy in Emergency): the final manuscript includes guidelines on the closure of emergency laparotomy.

Published
2023

50. Assessing and managing frailty in emergency laparotomy: a WSES position paper

Author

Tian, B, Stahel, P, Picetti, E, Campanelli, G, Di Saverio, S, Moore, E, Bensard, D, Sakakushev, B, Galante, J, Fraga, G, Koike, K, Di Carlo, I, Tebala, G, Leppaniemi, A, Tan, E, Damaskos, D, De'Angelis, N, Hecker, A, Pisano, M, Yunfengcui, Maier, R, De Simone, B, Amico, F, Ceresoli, M, Pikoulis, M, Weber, D, Biffl, W, Beka, S, Abu-Zidan, F, Valentino, M, Coccolini, F, Kluger, Y, Sartelli, M, Agnoletti, V, Chirica, M, Bravi, F, Sall, I, Catena, F, Tian B. W. C. A., Stahel P. F., Picetti E., Campanelli G., Di Saverio S., Moore E., Bensard D., Sakakushev B., Galante J., Fraga G. P., Koike K., Di Carlo I., Tebala G. D., Leppaniemi A., Tan E., Damaskos D., De'Angelis N., Hecker A., Pisano M., YunfengCui, Maier R. V., De Simone B., Amico F., Ceresoli M., Pikoulis M., Weber D. G., Biffl W., Beka S. G., Abu-Zidan F. M., Valentino M., Coccolini F., Kluger Y., Sartelli M., Agnoletti V., Chirica M., Bravi F., Sall I., Catena F., Tian, B, Stahel, P, Picetti, E, Campanelli, G, Di Saverio, S, Moore, E, Bensard, D, Sakakushev, B, Galante, J, Fraga, G, Koike, K, Di Carlo, I, Tebala, G, Leppaniemi, A, Tan, E, Damaskos, D, De'Angelis, N, Hecker, A, Pisano, M, Yunfengcui, Maier, R, De Simone, B, Amico, F, Ceresoli, M, Pikoulis, M, Weber, D, Biffl, W, Beka, S, Abu-Zidan, F, Valentino, M, Coccolini, F, Kluger, Y, Sartelli, M, Agnoletti, V, Chirica, M, Bravi, F, Sall, I, Catena, F, Tian B. W. C. A., Stahel P. F., Picetti E., Campanelli G., Di Saverio S., Moore E., Bensard D., Sakakushev B., Galante J., Fraga G. P., Koike K., Di Carlo I., Tebala G. D., Leppaniemi A., Tan E., Damaskos D., De'Angelis N., Hecker A., Pisano M., YunfengCui, Maier R. V., De Simone B., Amico F., Ceresoli M., Pikoulis M., Weber D. G., Biffl W., Beka S. G., Abu-Zidan F. M., Valentino M., Coccolini F., Kluger Y., Sartelli M., Agnoletti V., Chirica M., Bravi F., Sall I., and Catena F.

Abstract

Many countries are facing an aging population. As people live longer, surgeons face the prospect of operating on increasingly older patients. Traditional teaching is that with older age, these patients face an increased risk of mortality and morbidity, even to a level deemed too prohibitive for surgery. However, this is not always true. An active 90-year-old patient can be much fitter than an overweight, sedentary 65-year-old patient with comorbidities. Recent literature shows that frailty—an age-related cumulative decline in multiple physiological systems, is therefore a better predictor of mortality and morbidity than chronological age alone. Despite recognition of frailty as an important tool in identifying vulnerable surgical patients, many surgeons still shun objective tools. The aim of this position paper was to perform a review of the existing literature and to provide recommendations on emergency laparotomy and in frail patients. This position paper was reviewed by an international expert panel composed of 37 experts who were asked to critically revise the manuscript and position statements. The position paper was conducted according to the WSES methodology. We shall present the derived statements upon which a consensus was reached, specifying the quality of the supporting evidence and suggesting future research directions.

Published
2023

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