2,925 results on '"Zimmermann, R."'
Search Results
2. Measurement of the neutrino velocity with the OPERA detector in the CNGS beam using the 2012 dedicated data
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The OPERA Collaboration, Adam, T., Agafonova, N., Aleksandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Dhahbi, A. Ben, Beretta, M., Bertolin, A., Bozza, C., Brugière, T., Brugnera, R., Brunet, F., Brunetti, G., Buettner, B., Buontempo, S., Carlus, B., Cavanna, F., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chukanov, A., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R. A., Fukuda, T., Garfagnini, A., Giacomelli, G., Girerd, C., Goellnitz, C., Goldberg, J., Golubkov, D., Gornushkin, Y., Grella, G., Grianti, F., Guerin, C., Guler, A. M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hollnagel, A., Ishida, H., Ishiguro, K., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Kawada, J., Kim, J. H., Kim, S. H., Kimura, M., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Lauria, A., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Mancini-Terracciano, C., Malgin, A., Mandrioli, G., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Migliozzi, P., Mikado, S., Monacelli, P., Montesi, M. C., Morishima, K., Moser, U., Muciaccia, M. T., Nakamura, M., Nakano, T., Nakatsuka, Y., Naumov, D., Nikitina, V., Ogawa, S., Olchevsky, A., Ozaki, K., Palamara, O., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pistillo, C., Podgrudkov, D., Polukhina, N., Pozzato, M., Pretzl, K., Pupilli, F., Rescigno, R., Roda, M., Roganova, T., Rokujo, H., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Schmidt-Parzefall, W., Schuler, J., Shakiryanova, I., Sheshukov, A., Shibuya, H., Shoziyoev, G., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strauss, T., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tolun, P., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Wurtz, J., Yoon, C. S., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.
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High Energy Physics - Experiment ,Physics - Instrumentation and Detectors - Abstract
In spring 2012 CERN provided two weeks of a short bunch proton beam dedicated to the neutrino velocity measurement over a distance of 730 km. The OPERA neutrino experiment at the underground Gran Sasso Laboratory used an upgraded setup compared to the 2011 measurements, improving the measurement time accuracy. An independent timing system based on the Resistive Plate Chambers was exploited providing a time accuracy of $\sim$1 ns. Neutrino and anti-neutrino contributions were separated using the information provided by the OPERA magnetic spectrometers. The new analysis profited from the precision geodesy measurements of the neutrino baseline and of the CNGS/LNGS clock synchronization. The neutrino arrival time with respect to the one computed assuming the speed of light in vacuum is found to be $\delta t_\nu \equiv TOF_c - TOF_\nu= (0.6 \pm 0.4\ (stat.) \pm 3.0\ (syst.))$ ns and $\delta t_{\bar{\nu}} \equiv TOF_c - TOF_{\bar{\nu}} = (1.7 \pm 1.4\ (stat.) \pm 3.1\ (syst.))$ ns for $\nu_{\mu}$ and $\bar{\nu}_{\mu}$, respectively. This corresponds to a limit on the muon neutrino velocity with respect to the speed of light of $-1.8 \times 10^{-6} < (v_{\nu}-c)/c < 2.3 \times 10^{-6}$ at 90% C.L. This new measurement confirms with higher accuracy the revised OPERA result., Comment: 14 pages, 4 figures
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- 2012
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3. Brillouin-Wigner perturbation theory in open electromagnetic systems
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Muljarov, E. A., Langbein, W., and Zimmermann, R.
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Physics - Optics ,Quantum Physics - Abstract
A Brillouin-Wigner perturbation theory is developed for open electromagnetic systems which are characterised by discrete resonant states with complex eigenenergies. Since these states are exponentially growing at large distances, a modified normalisation is introduced that allows a simple spectral representation of the Green's function. The perturbed modes are found by solving a linear eigenvalue problem in matrix form. The method is illustrated on exactly solvable one- and three-dimensional examples being, respectively, a dielectric slab and a microsphere., Comment: 6 pages, 2 figures
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- 2012
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4. Infrastructure for Detector Research and Development towards the International Linear Collider
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Aguilar, J., Ambalathankandy, P., Fiutowski, T., Idzik, M., Kulis, Sz., Przyborowski, D., Swientek, K., Bamberger, A., Köhli, M., Lupberger, M., Renz, U., Schumacher, M., Zwerger, Andreas, Calderone, A., Cussans, D. G., Heath, H. F., Mandry, S., Page, R. F., Velthuis, J. J., Attié, D., Calvet, D., Colas, P., Coppolani, X., Degerli, Y., Delagnes, E., Gelin, M., Giomataris, I., Lutz, P., Orsini, F., Rialot, M., Senée, F., Wang, W., Alozy, J., Apostolakis, J., Aspell, P., Bergsma, F., Campbell, M., Formenti, F., Santos, H. Franca, Garcia, E. Garcia, de Gaspari, M., Giudice, P. -A., Grefe, Ch., Grichine, V., Hauschild, M., Ivantchenko, V., Kehrli, A., Kloukinas, K., Linssen, L., Cudie, X. Llopart, Marchioro, A., Musa, L., Ribon, A., Trampitsch, G., Uzhinskiy, V., Anduze, M., Beyer, E., Bonnemaison, A., Boudry, V., Brient, J. -C., Cauchois, A., Clerc, C., Cornat, R., Frotin, M., Gastaldi, F., Jauffret, C., Jeans, D., Karar, A., Mathieu, A., de Freitas, P. Mora, Musat, G., Rougé, A., Ruan, M., Vanel, J. -C., Videau, H., Besson, A., de Masi, G. Claus. R., Doziere, G., Dulinski, W., Goffe, M., Himmi, A., Hu-Guo, Ch., Morel, F., Valin, I., Winter, M., Bonis, J., Callier, S., Cornebise, P., Dulucq, F., Giannelli, M. Faucci, Fleury, J., Guilhem, G., Martin-Chassard, G., de la Taille, Ch., Pöschl, R., Raux, L., Seguin-Moreau, N., Wicek, F., Benyamna, M., Bonnard, J., Cârloganu, C., Fehr, F., Gay, P., Mannen, S., Royer, L., Charpy, A., Da Silva, W., David, J., Dhellot, M., Imbault, D., Ghislain, P., Kapusta, F., Pham, T. Hung, Savoy-Navarro, A., Sefri, R., Dzahini, D., Giraud, J., Grondin, D., Hostachy, J. -Y., Morin, L., Bassignana, D., Pellegrini, G., Lozano, M., Quirion, D., Fernandez, M., Jaramillo, R., Munoz, F. J., Vila, I., Dolezal, Z., Drasal, Z., Kodys, P., Kvasnicka, P., Aplin, S., Bachynska, O., Behnke, T., Behr, J., Dehmelt, K., Engels, J., Gadow, K., Gaede, F., Garutti, E., Göttlicher, P., Gregor, I. -M., Haas, T., Henschel, H., Koetz, U., Lange, W., Libov, V., Lohmann, W., Lutz, B., Mnich, J., Muhl, C., Ohlerich, M., Potylitsina-Kube, N., Prahl, V., Reinecke, M., Roloff, P., Rosemann, Ch., Rubinski, Igor, Schade, P., Schuwalov, S., Sefkow, F., Terwort, M., Volkenborn, R., Kalliopuska, J., Mehtaelae, P., Orava, R., van Remortel, N., Cvach, J., Janata, M., Kvasnicka, J., Marcisovsky, M., Polak, I., Sicho, P., Smolik, J., Vrba, V., Zalesak, J., Bergauer, T., Dragicevic, M., Friedl, M., Haensel, S., Irmler, C., Kiesenhofer, W., Krammer, M., Valentan, M., Piemontese, L., Cotta-Ramusino, A., Bulgheroni, A., Jastrzab, M., Caccia, M., Re, V., Ratti, L., Traversi, G., Dewulf, J. -P., Janssen, X., De Lentdecker, G., Yang, Y., Bryngemark, L., Christiansen, P., Gross, P., Jönsson, L., Ljunggren, M., Lundberg, B., Mjörnmark, U., Oskarsson, A., Richert, T., Stenlund, E., Österman, L., Rummel, S., Richter, R., Andricek, L., Ninkovich, J., Koffmane, Ch., Moser, H. -G., Boisvert, V., Green, B., Green, M. G., Misiejuk, A., Wu, T., Bilevych, Y., Carballo, V. M. Blanco, Chefdeville, M., de Nooij, L., Fransen, M., Hartjes, F., van der Graaf, H., Timmermans, J., Abramowicz, H., Ben-Hamu, Y., Jikhleb, I., Kananov, S., Levy, A., Levy, I., Sadeh, I., Schwartz, R., Stern, A., Goodrick, M. J., Hommels, L. B. A., Ward, R. Shaw. D. R., Daniluk, W., Kielar, E., Kotula, J., Moszczynski, A., Oliwa, K., Pawlik, B., Wierba, W., Zawiejski, L., Bailey, D. S., Kelly, M., Eigen, G., Brezina, Ch., Desch, K., Furletova, J., Kaminski, J., Killenberg, M., Köckner, F., Krautscheid, T., Krüger, H., Reuen, L., Wienemann, P., Zimmermann, R., Zimmermann, S., Bartsch, V., Postranecky, M., Warren, M., Wing, M., Corrin, E., Haas, D., Pohl, M., Diener, R., Fischer, P., Peric, I., Kaukher, A., Schäfer, O., Schröder, H., Wurth, R., and Zarnecki, A. F.
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Physics - Instrumentation and Detectors ,High Energy Physics - Experiment - Abstract
The EUDET-project was launched to create an infrastructure for developing and testing new and advanced detector technologies to be used at a future linear collider. The aim was to make possible experimentation and analysis of data for institutes, which otherwise could not be realized due to lack of resources. The infrastructure comprised an analysis and software network, and instrumentation infrastructures for tracking detectors as well as for calorimetry., Comment: 54 pages, 48 pictures
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- 2012
5. Measurement of the atmospheric muon charge ratio with the OPERA detector
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OPERA Collaboration, Agafonova, N., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Autiero, D., Badertscher, A., Bagulya, A., Bertolin, A., Besnier, M., Bick, D., Boyarkin, V., Bozza, C., Brugière, T., Brugnera, R., Brunetti, G., Buontempo, S., Cazes, A., Chaussard, L., Chernyavsky, M., Chiarella, V., Chon-Sen, N., Chukanov, A., Cozzi, M., D'Amato, G., Corso, F. Dal, D'Ambrosio, N., De Lellis, G., D'eclais, Y., De Serio, M., Di Capua, F., Di Ferdinando, D., Di Giovanni, A., Di Marco, N., Dmitrievski, S., Dracos, M., Duchesneau, D., Dusini, S., Ebert, J., Egorov, O., Enikeev, R., Ereditato, A., Esposito, L. S., Favier, J., Felici, G., Ferber, T., Fini, R., Frekers, D., Fukuda, T., Fukushima, C., Galkin, V. I., Garfagnini, A., Giacomelli, G., Giorgini, M., Goellnitz, C., Goldberg, J., Golubkov, D., Goncharova, L., Gornushkin, Y., Grella, G., Grianti, F., Guler, M., Gustavino, C., Hagner, C., Hamada, K., Hara, T., Hierholzer, M., Hoshino, K., Ieva, M., Jakovcic, K., Jollet, C., Juget, F., Kazuyama, M., Kim, S. H., Kimura, M., Klicek, B., Knuesel, J., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Kubota, H., Lazzaro, C., Lenkeit, J., Ljubicic, A., Longhin, A., Lutter, G., Malgin, A., Mandrioli, G., Marotta, A., Marteau, J., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meisel, F., Meregaglia, A., Migliozzi, P., Mikado, S., Miyamoto, S., Monacelli, P., Morishima, K., Moser, U., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Naumov, D., Nikitina, V., Niwa, K., Nonoyama, Y., Ogawa, S., Olchevski, A., Oldorf, C., Orlova, G., Osedlo, V., Paniccia, M., Paoloni, A., Park, B. D., Park, I. G., Pastore, A., Patrizii, L., Pennacchio, E., Pessard, H., Pilipenko, V., Pistillo, C., Policastro, G., Polukhina, N., Pozzato, M., Pretzl, K., Publichenko, P., Pupilli, F., Rescigno, R., Roganova, T., Rokujo, H., Romano, G., Rosa, G., Rostovtseva, I., Rubbia, A., Russo, A., Ryasny, V., Ryazhskaya, O., Sato, O., Sato, Y., Schembri, A., Parzefall, W. Schmidt, Schroeder, H., Lavina, L. Scotto, Sheshukov, A., Shibuya, H., Simone, S., Sioli, M., Sirignano, C., Sirri, G., Song, J. S., Spinetti, M., Stanco, L., Starkov, N., Stipcevic, M., Strauss, T., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tezuka, I., Tioukov, V., Tolun, P., Tran, T., Tufanli, S., Vilain, P., Vladimirov, M., Votano, L., Vuilleumier, J. L., Wilquet, G., Wonsak, B., Yakushev, V., Yoon, C. S., Yoshioka, T., Yoshida, J., Zaitsev, Y., Zemskova, S., Zghiche, A., and Zimmermann, R.
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High Energy Physics - Experiment - Abstract
The OPERA detector at the Gran Sasso underground laboratory (LNGS) was used to measure the atmospheric muon charge ratio in the TeV energy region. We analyzed 403069 atmospheric muons corresponding to 113.4 days of livetime during the 2008 CNGS run. We computed separately the muon charge ratio for single and for multiple muon events in order to select different energy regions of the primary cosmic ray spectrum and to test the charge ratio dependence on the primary composition. The measured charge ratio values were corrected taking into account the charge-misidentification errors. Data have also been grouped in five bins of the "vertical surface energy". A fit to a simplified model of muon production in the atmosphere allowed the determination of the pion and kaon charge ratios weighted by the cosmic ray energy spectrum., Comment: 14 pages, 10 figures
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- 2010
6. Supplementary Material to the Comment on 'Photoluminescence Ring Formation in Coupled Quantum Wells: Excitonic Versus Ambipolar Diffusion'
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Ivanov, A. L., Muljarov, E. A., Mouchliadis, L., and Zimmermann, R.
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Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
This is a supplementary material to our Comment arXiv:0909.4265 on M. Stern, V. Garmider, E. Segre, M. Rappaport, V. Umansky, Y. Levinson, and I. Bar-Joseph, Phys. Rev. Lett. 101, 257402 (2008).
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- 2010
7. Comment on 'Photoluminescence ring formation in coupled quantum wells: Excitonic versus ambipolar diffusion'
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Ivanov, A. L., Muljarov, E. A., Mouchliadis, L., and Zimmermann, R.
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Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
This is a comment on M. Stern, V. Garmider, E. Segre, M. Rappaport, V. Umansky, Y. Levinson, and I. Bar-Joseph, Phys. Rev. Lett. 101, 257402 (2008).
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- 2009
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8. Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics
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The ATLAS Collaboration, Aad, G., Abat, E., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., Abi, B., Abolins, M., Abramowicz, H., Acharya, B. S., Adams, D. L., Addy, T. N., Adorisio, C., Adragna, P., Adye, T., Aguilar-Saavedra, J. A., Aharrouche, M., Ahlen, S. P., Ahles, F., Ahmad, A., Ahmed, H., Aielli, G., Akdogan, T., Akesson, T. P. A., Akimoto, G., Alam, M. S., Alam, M. A., Albert, J., Albrand, S., Aleksa, M., Aleksandrov, I. N., Alessandria, F., Alexa, C., Alexander, G., Alexandre, G., Alexopoulos, T., Alhroob, M., Alimonti, G., Alison, J., Aliyev, M., Allport, P. P., Allwood-Spiers, S. E., Aloisio, A., Alon, R., Alonso, A., Alonso, J., Alviggi, M. G., Amako, K., Amaral, P., Amelung, C., Ammosov, V. V., Amorim, A., Amoros, G., Amram, N., Anastopoulos, C., Anders, C. F., Anderson, K. J., Andreazza, A., Andrei, V., Andrieux, M-L., Anduaga, X. S., Anghinolfi, F., Antonaki, A., Antonelli, M., Antonelli, S., Antunovic, B., Anulli, F. A., Arabidze, G., Aracena, I., Arai, Y., Arce, A. T. H., Archambault, J. P., Arfaoui, S., Arguin, J-F., Argyropoulos, T., Arik, E., Arik, M., Armbruster, A. J., Arnaez, O., Arnault, C., Artamonov, A., Arutinov, D., Asai, M., Asai, S., Ask, S., Asman, B., Asner, D., Asquith, L., Assamagan, K., Astbury, A., Astvatsatourov, A., Atkinson, T., Atoian, G., Auerbach, B., Auge, E., Augsten, K., Aurousseau, M. A., Austin, N., Avolio, G., Avramidou, R., Axen, A., Ay, C., Azuelos, G., Azuma, Y., Baak, M. A., Baccaglioni, G., Bacci, C., Bachacou, H., Bachas, K., Backes, M., Badescu, E., Bagnaia, P., Bai, Y., Bailey, D. C., Baines, J. T., Baker, O. K., Pedrosa, F. Baltasar Dos Santos, Banas, E., Banerjee, S., Banfi, D., Bangert, A., Bansal, V., Baranov, S. P., Baranov, S., Barashkou, A., Barber, T. B., Barberio, E. L., Barberis, D., Barbero, M. B., Bardin, D. Y., Barillari, T., Barisonzi, M., Barklow, T., Barlow, N. B., Barnett, B. M., Barnett, R. M., Baron, S., Baroncelli, A., Barr, A. J., Barreiro, F., da Costa, J. Barreiro Guimaraes, Barrillon, P., Bartoldus, R., Bartsch, D., Bastos, J., Bates, R. L., Batley, J. R., Battaglia, A., Battistin, M., Bauer, F., Bazalova, M., Beare, B., Beauchemin, P. H., Beccherle, R. B., Becerici, N., Bechtle, P., Beck, G. A., Beck, H. P., Beckingham, M., Becks, K. H., Bedajanek, I., Beddall, A. J., Beddall, A., Bednar, P., Bednyakov, V. A., Bee, C., Harpaz, S. Behar, Behera, P. K., Beimforde, M., Belanger-Champagne, C., Bell, P. J., Bell, W. H., Bella, G., Bellagamba, L., Bellina, F., Bellomo, M., Belloni, A., Belotskiy, K., Beltramello, O., Ami, S. Ben, Benary, O., Benchekroun, D., Bendel, M., Benedict, B. H., Benekos, N., Benhammou, Y., Benincasa, G. P., Benjamin, D. P., Benoit, M., Bensinger, J. R., Benslama, K., Bentvelsen, S., Beretta, M., Berge, D., Kuutmann, E. Bergeaas, Berger, N., Berghaus, F., Berglund, E., Beringer, J., Bernardet, K., Bernat, P., Bernhard, R., Bernius, C., Berry, T., Bertin, A., Besson, N., Bethke, S., Bianchi, R. M., Bianco, M., Biebel, O., Biesiada, J., Biglietti, M., Bilokon, H., Binet, S., Bingul, A., Bini, C., Biscarat, C., Bischofberger, M., Bitenc, U., Black, K. M., Blair, R. E., Blanchot, G., Blocker, C., Blocki, J., Blondel, A., Blum, W., Blumenschein, U., Boaretto, C., Bobbink, G. J., Bocci, A., Bodine, B., Boek, J., Boelaert, N., Boeser, S., Bogaerts, J. A., Bogouch, A., Bohm, C., Bohm, J., Boisvert, V., Bold, T., Boldea, V., Bondarenko, V. G., Bondioli, M., Boonekamp, M., Booth, C. N., Booth, P. S. L., Booth, J. R. A., Borisov, A., Borissov, G., Borjanovic, I., Borroni, S., Bos, K., Boscherini, D., Bosman, M., Bosteels, M., Boterenbrood, H., Bouchami, J., Boudreau, J., Bouhova-Thacker, E. V., Boulahouache, C., Bourdarios, C., Boyd, J., Boyko, I. R., Braem, A., Branchini, P., Brandenburg, G. W., Brandt, A., Brandt, O., Bratzler, U., Brau, J. E., Braun, H. M., Brelier, B., Bremer, J., Brenner, R., Bressler, S., Breton, D., Brett, N. D., Britton, D., Brochu, F. M., Brock, I., Brock, R., Brodet, E., Broggi, F., Brooijmans, G., Brooks, W. K., Brubaker, E., de Renstrom, P. A. Bruckman, Bruncko, D., Bruneliere, R., Brunet, S., Bruni, A., Bruni, G., Bruschi, M., Buanes, T., Bucci, F. B., Buchholz, P., Buckley, A. G., Budagov, I. A., Buescher, V., Bugge, L., Bujor, F., Bulekov, O., Bunse, M., Buran, T., Burckhart, H., Burdin, S., Burke, S., Busato, E., Buszello, C. P., Butin, F., Butler, B., Butler, J. M., Buttar, C. M., Butterworth, J. M., Byatt, T., Urban, S. Cabrera, Caforio, D., Cakir, O., Calafiura, P., Calderini, G., Calkins, R., Caloba, L. P., Caloi, R., Calvet, D., Camarri, P., Cambiaghi, M., Cameron, D., Segura, F. Campabadal, Campana, S., Campanelli, M., Canale, V., Cantero, J., Garrido, M. D. M. Capeans, Caprini, I., Caprini, M., Capua, M., Caputo, R., Caramarcu, C., Cardarelli, R., Carli, T., Carlino, G., Carminati, L., Caron, B., Caron, S., Montero, S. Carron, Carter, A. A., Carter, J. R., Carvalho, J., Casadei, D., Casado, M. P., Cascella, M., Caso, C., Hernadez, A. M. Castaneda, Miranda, E. Castaneda, Gimenez, V. Castillo, Castro, N. F., Cataldi, G., Catinaccio, A., Catmore, J. R., Cattai, A., Cattani, G., Caughron, S., Cauz, D., Cavalleri, P., Cavalli, D., Cavalli-Sforza, M., Cavasinni, V., Cazzato, A., Ceradini, F., Cerqueira, A. S., Cerri, A., Cerrito, L., Cerutti, F., Cetin, S. A., Cevenini, F., Chafaq, A. C., Chakraborty, D., Chapman, J. D., Chapman, J. W., Chareyre, E. C., Charlton, D. G., Chatterjii, S. C., Cheatham, S., Chekanov, S., Chekulaev, S. V., Chelkov, G. A., Chen, H., Chen, T., Chen, X., Cheng, S., Cheng, T. L., Cheplakov, A., Chepurnov, V. F., Moursli, R. Cherkaoui El, Tcherniatine, V., Chesneanu, D., Cheu, E., Cheung, S. L., Chevalier, L., Chevallier, F., Chiarella, V., Chiefari, G., Chikovani, L., Childers, J. T., Chilingarov, A., Chiodini, G., Chouridou, S., Chren, D., Christidi, I. A., Christov, A., Chromek-Burckhart, D., Chu, M. L., Chudoba, J., Ciapetti, G., Ciftci, A. K., Ciftci, R., Cindro, V., Ciobotaru, M. D., Ciocca, C., Ciocio, A., Cirilli, M., Citterio, M., Clark, A., Cleland, W., Clemens, J. C., Clement, B., Clement, C., Clements, D., Coadou, Y., Cobal, M., Coccaro, A., Cochran, J., Coelli, S., Coggeshall, J., Cogneras, E., Cojocaru, C. D., Colas, J., Cole, B., Colijn, A. P., Collard, C., Collins, N. J., Collins-Tooth, C., Collot, J., Colon, G., Coluccia, R., Muino, P. Conde, Coniavitis, E., Consonni, M., Constantinescu, S., Conta, C., Conventi, F., Cook, J., Cooke, M., Cooper, B. D., Cooper-Smith, N. J., Copic, K., Cornelissen, T., Corradi, M., Corriveau, F. C., Corso-Radu, A., Cortes-Gonzalez, A., Costa, G., Costa, M. J., Costanzo, D., Costin, T., Cote, D., Torres, R. 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- Subjects
High Energy Physics - Experiment - Abstract
A detailed study is presented of the expected performance of the ATLAS detector. The reconstruction of tracks, leptons, photons, missing energy and jets is investigated, together with the performance of b-tagging and the trigger. The physics potential for a variety of interesting physics processes, within the Standard Model and beyond, is examined. The study comprises a series of notes based on simulations of the detector and physics processes, with particular emphasis given to the data expected from the first years of operation of the LHC at CERN.
- Published
- 2008
9. Exciton dephasing in quantum dots: Coupling to LO phonons via excited states
- Author
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Muljarov, E. A. and Zimmermann, R.
- Subjects
Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
We have found a novel mechanism of spectral broadening and dephasing in quantum dots (QDs) due to the coupling to longitudinal-optical (LO) phonons. In theory, this mechanism comes into play only if the complete manifold of exciton levels (including those in the wetting-layer continuum) is taken into account. We demonstrate this nontrivial dephasing in different types of QDs, using the exactly solvable quadratic coupling model, here generalized to an arbitrary number of excitonic states., Comment: OECS10 contribution paper
- Published
- 2007
- Full Text
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10. Large underground, liquid based detectors for astro-particle physics in Europe: scientific case and prospects
- Author
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Autiero, D., Aysto, J., Badertscher, A., Bezrukov, L., Bouchez, J., Bueno, A., Busto, J., Campagne, J. -E., Cavata, Ch., Chaussard, L., de Bellefon, A., Declais, Y., Dumarchez, J., Ebert, J., Enqvist, T., Ereditato, A., von Feilitzsch, F., Perez, P. Fileviez, Goger-Neff, M., Gninenko, S., Gruber, W., Hagner, C., Hess, M., Hochmuth, K. A., Kisiel, J., Knecht, L., Kreslo, I., Kudryavtsev, V. A., Kuusiniemi, P., Lachenmaier, T., Laffranchi, M., Lefievre, B., Lightfoot, P. K., Lindner, M., Maalampi, J., Maltoni, M., Marchionni, A., Undagoitia, T. Marrodan, Marteau, J., Meregaglia, A., Messina, M., Mezzetto, M., Mirizzi, A., Mosca, L., Moser, U., Muller, A., Natterer, G., Oberauer, L., Otiougova, P., Patzak, T., Peltoniemi, J., Potzel, W., Pistillo, C ., Raffelt, G. G., Rondio, E., Roos, M., Rossi, B., Rubbia, A., Savvinov, N., Schwetz, T., Sobczyk, J., Spooner, N. J. C., Stefan, D., Tonazzo, A., Trzaska, W., Ulbricht, J., Volpe, C., Winter, J., Wurm, M., Zalewska, A., and Zimmermann, R.
- Subjects
High Energy Physics - Phenomenology - Abstract
This document reports on a series of experimental and theoretical studies conducted to assess the astro-particle physics potential of three future large-scale particle detectors proposed in Europe as next generation underground observatories. The proposed apparatus employ three different and, to some extent, complementary detection techniques: GLACIER (liquid Argon TPC), LENA (liquid scintillator) and MEMPHYS (\WC), based on the use of large mass of liquids as active detection media. The results of these studies are presented along with a critical discussion of the performance attainable by the three proposed approaches coupled to existing or planned underground laboratories, in relation to open and outstanding physics issues such as the search for matter instability, the detection of astrophysical- and geo-neutrinos and to the possible use of these detectors in future high-intensity neutrino beams., Comment: 50 pages, 26 figures
- Published
- 2007
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11. LO Phonon-Induced Exciton Dephasing in Quantum Dots: An Exactly Solvable Model
- Author
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Muljarov, E. A. and Zimmermann, R.
- Subjects
Condensed Matter - Other Condensed Matter - Abstract
It is widely believed that, due to its discrete nature, excitonic states in a quantum dot coupled to dispersionless LO phonons form everlasting mixed states (exciton polarons) showing no line broadening in the spectrum. This is indeed true if the model is restricted to a limited number of excitonic states in a quantum dot. We show, however, that extending the model to a large number of states results in LO phonon-induced spectral broadening and complete decoherence of the optical response., Comment: 4 pages, 4 figures
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- 2006
- Full Text
- View/download PDF
12. Status of the OPERA Experiment
- Author
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Zimmermann, R.
- Subjects
Physics - Instrumentation and Detectors ,High Energy Physics - Experiment ,Physics - Accelerator Physics - Abstract
In this article the physics motivation and the detector design of the OPERA experiment will be reviewed. The construction status of the detector, which will be situated in the CNGS beam from CERN to the Gran Sasso laboratory, will be reported. A survey on the physics performance will be given and the physics plan in 2006 will be presented., Comment: 5 pages, 4 figures, conference proceedings, to be published in Acta Physica polonica B
- Published
- 2006
13. Memory and correlation effects in the exciton-phonon kinetics
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Mannarini, G. and Zimmermann, R.
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Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
Memory and correlation effects in the interband absorption from quantum wells due to exciton-phonon dynamics are investigated. They are traced back to the frequency dependence and matrix character of the self energy arising in a 2nd Born theory. It is found that interpeak absorption increases with respect to the case in which this memory and correlation effects are neglected., Comment: NOEKS8 Proceedings
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- 2006
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14. Nonlinear optical response and exciton dephasing in quantum dots
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Muljarov, E. A. and Zimmermann, R.
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Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
The full time-dependent four-wave mixing polarization in quantum dots is microscopically calculated, taking into account acoustic phonon-assisted transitions between different exciton states of the dot. It is shown that quite different dephasing times of higher exciton states in pancake anisotropic InGaAs quantum dots are responsible for the experimentally observed [1] double-exponential decay in the photon echo signal., Comment: NOEKS-8 contribution; 4 pages, 3 figures
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- 2006
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15. Dynamical T-matrix theory for high-density excitons in coupled quantum wells
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Zimmermann, R.
- Subjects
Condensed Matter - Other Condensed Matter ,Condensed Matter - Materials Science - Abstract
Excitons in coupled quantum wells open the possibility to reach high densities close to equilibrium. In a recent experiment employing a lateral trap potential, a blue shift and a broadening of the exciton emission line has been seen (Snoke, SSC 134). The standard Hartree-Fock treatment can explain the blue shift but fails to give a finite broadening. Starting from the (spin-dependent) many-exciton Hamiltonian with direct and exchange potential, we present a dynamical T-matrix calculation for the single-exciton Green's function which is directly related to the frequency- and angle-resolved photoluminescence. The calculated spectrum is blue shifted and broadened due to exciton-exciton scattering. At high excitation, both the spectrum and the angular emission are getting narrow. This is a direct manifestation for off-diagonal long range order and a precursor of condensation., Comment: 7 pages, 3 figures. Proceedings NOEKS 8 (Muenster 2006)
- Published
- 2006
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16. Near-field spectra of quantum well excitons with non-Markovian phonon scattering
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Mannarini, G. and Zimmermann, R.
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Condensed Matter - Materials Science - Abstract
The excitonic absorption spectrum for a disordered quantum well in presence of exciton-acoustic phonon interaction is treated beyond the Markov approximation. Realistic disorder exciton states are taken from a microscopic simulation, and the deformation potential interaction is implemented. The exciton Green's function is solved with a self energy in second order Born quality. The calculated spectra differ from a superposition of Lorentzian lineshapes by enhanced inter-peak absorption. This is a manifestation of pure dephasing which should be possible to measure in near-field experiments., Comment: 8 pages, 7 figures
- Published
- 2005
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17. Comment on 'Dephasing Times in Quantum Dots due to Elastic LO Phonon-Carrier Collisions'
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Muljarov, E. A. and Zimmermann, R.
- Subjects
Condensed Matter - Other Condensed Matter - Abstract
This paper is a Comment on Phys. Rev. Lett. 85, 1516 (2000) by A.V. Uskov, A.-P. Jauho, B. Tromborg, J. Mork, and R. Lang., Comment: 1 page, 1 figure. Phys. Rev. Lett., accepted
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- 2005
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18. Optical exciton Aharonov-Bohm effect, persistent current, and magnetization in semiconductor nanorings of type I and II
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Grochol, M., Grosse, F., and Zimmermann, R.
- Subjects
Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
The optical exciton Aharonov-Bohm effect, i. e. an oscillatory component in the energy of optically active (bright) states, is investigated in nanorings. It is shown that a small effective electron mass, strong confinement of the electron, and high barrier for the hole, achieved e. g. by an InAs nanoring embedded in an AlGaSb quantum well, are favorable for observing the optical exciton Aharonov-Bohm effect. The second derivative of the exciton energy with respect to the magnetic field is utilized to extract Aharonov-Bohm oscillations even for the lowest bright state unambiguously. A connection between the theories for infinitesimal narrow and finite width rings is established. Furthermore, the magnetization is compared to the persistent current, which oscillates periodically with the magnetic field and confirms thus the non-trivial (connected) topology of the wave function in the nanoring., Comment: 12 pages, 11 figures
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- 2005
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19. Optical absorption in quantum dots: Coupling to longitudinal optical phonons treated exactly
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Stauber, T. and Zimmermann, R.
- Subjects
Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
Optical transitions in a semiconductor quantum dot are theoretically investigated, with emphasis on the coupling to longitudinal optical phonons, and including excitonic effects. When limiting to a finite number of $m$ electron and $n$ hole levels in the dot, the model can be solved exactly within numerical accuracy. Crucial for this to work is the absence of dispersion of the phonons. A suitable orthogonalization procedure leaves only $m(m+1)/2+n(n+1)/2-2$ phonon modes to be coupled to the electronic system. We calculate the linear optical polarization following a delta pulse excitation, and by a subsequent Fourier transformation the resulting optical absorption. This strict result is compared with a frequently used approximation modeling the absorption as a convolution between spectral functions of electron and hole, which tends to overestimate the effect of the phonon coupling. Numerical results are given for two electron and three hole states in a quantum dot made from the polar material CdSe. Parameter values are chosen such that a quantum dot with a resonant sublevel distance can be compared with a nonresonant one., Comment: 12 pages, 6 figures
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- 2005
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20. Electron-Phonon Interacation in Quantum Dots: A Solvable Model
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Stauber, T., Zimmermann, R., and Castella, H.
- Subjects
Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
The relaxation of electrons in quantum dots via phonon emission is hindered by the discrete nature of the dot levels (phonon bottleneck). In order to clarify the issue theoretically we consider a system of $N$ discrete fermionic states (dot levels) coupled to an unlimited number of bosonic modes with the same energy (dispersionless phonons). In analogy to the Gram-Schmidt orthogonalization procedure, we perform a unitary transformation into new bosonic modes. Since only $N(N+1)/2$ of them couple to the fermions, a numerically exact treatment is possible. The formalism is applied to a GaAs quantum dot with only two electronic levels. If close to resonance with the phonon energy, the electronic transition shows a splitting due to quantum mechanical level repulsion. This is driven mainly by one bosonic mode, whereas the other two provide further polaronic renormalizations. The numerically exact results for the electron spectral function compare favourably with an analytic solution based on degenerate perturbation theory in the basis of shifted oscillator states. In contrast, the widely used selfconsistent first-order Born approximation proves insufficient in describing the rich spectral features., Comment: 8 pages, 4 figures
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- 2005
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21. Phonon-induced Exciton Dephasing in Quantum Dot Molecules
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Muljarov, E. A., Takagahara, T., and Zimmermann, R.
- Subjects
Condensed Matter - Other Condensed Matter - Abstract
A new microscopic approach to the optical transitions in quantum dots and quantum dot molecules, which accounts for both diagonal and non-diagonal exciton-phonon interaction, is developed. The cumulant expansion of the linear polarization is generalized to a multilevel system and is applied to calculation of the full time dependence of the polarization and the absorption spectrum. In particular, the broadening of zero-phonon lines is evaluated directly. It is found that in some range of the dot distance real phonon-assisted transitions between exciton states dominate the dephasing, while virtual transitions are of minor importance. The influence of Coulomb interaction, tunneling, and structural asymmetry on the exciton dephasing in quantum dot molecules is analyzed., Comment: 4 pages, 5 figures
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- 2005
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22. The surface chemistry of sapphire-c: A literature review and a study on various factors influencing its IEP
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Lützenkirchen, J., Franks, G.V., Plaschke, M., Zimmermann, R., Heberling, F., Abdelmonem, A., Darbha, G.K., Schild, D., Filby, A., Eng, P., Catalano, J.G., Rosenqvist, J., Preocanin, T., Aytug, T., Zhang, D., Gan, Y., and Braunschweig, B.
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- 2018
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23. A large proportion of people who inject drugs are susceptible to hepatitis B: Results from a bio-behavioural study in eight German cities
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Haussig, J.M., Nielsen, S., Gassowski, M., Bremer, V., Marcus, U., Wenz, B., Bannert, N., Bock, C.T., and Zimmermann, R.
- Published
- 2018
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24. Dephasing in Quantum Dots: Quadratic Coupling to Acoustic Phonons
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Muljarov, E. A. and Zimmermann, R.
- Subjects
Condensed Matter - Abstract
A microscopic theory of optical transitions in quantum dots with carrier-phonon interaction is developed. Virtual transitions into higher confined states with acoustic phonon assistance add a quadratic phonon coupling to the standard linear one, thus extending the independent Boson model. Summing infinitely many diagrams in the cumulant, a numerically exact solution for the interband polarization is found. Its full time dependence and the absorption lineshape of the quantum dot are calculated. It is the quadratic interaction which gives rise to a temperature-dependent broadening of the zero-phonon line, being here calculated for the first time in a consistent scheme., Comment: 4 pages, 2 figures
- Published
- 2003
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25. Models and Metaphors. Part I: From the Boundaries of Formalization to the Visualization of the Non-Formalized
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Zimmermann, R. E., Ley, S., Budanov, V. G., and Voitsekhovitch, V. E.
- Subjects
Nonlinear Sciences - Adaptation and Self-Organizing Systems - Abstract
The explicit relationship among perception, communication, and design is being discussed in some detail, in order to relate it to characteristic details of the modeling of the world which defines the scientific and artistic activities of humans, in the first place, but also the philosophical grasping of the world and its foundations in order to position humankind within this worldly framework, at the same time. In particular, the structure and constitutional role of language are being analyzed with a view to the latter's universality. For the special case of synergetics (within the recent context of theories of self-organization and the formation of structure), this cognitive background is being inspected as to possible consequences for aspects of complexity and nonlinearity., Comment: 20 pages, INTAS/NIS research report
- Published
- 2002
26. Models and Metaphors. Part II: The Aesthetical Conception of Natural Laws
- Author
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Zimmermann, R. E., Schlemm, A., Zeilinger, D., Budanov, V. G., and Voitsekhovitch, V. E.
- Subjects
Nonlinear Sciences - Adaptation and Self-Organizing Systems - Abstract
Following the results and the general methodological framework of a preceeding paper (Models and Metaphors, part I, henceforth: MM), we develop some results on the epistemological state of natural laws and ask for explicit possibilities of mediating the contexts of nature (in terms of the sciences) and aesthetics., Comment: 4 pages, INTAS/NIS research report
- Published
- 2002
27. The civil society monitoring of hepatitis C response related to the WHO 2030 elimination goals in 35 European countries
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Maticic, M., Pirnat, Z., Leicht, A., Zimmermann, R., Windelinck, T., Jauffret-Roustide, M., Duffell, E., Tammi, T., and Schatz, E.
- Published
- 2020
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28. Beam Test of BTeV Pixel Detectors
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Wang, J. C., Appel, J. A., Artuso, M., Butler, J. N., Cancelo, G., Cardoso, G., Cheung, H., Chiodini, G., Christian, D. C., Colautti, A., Coluccia, R., Di Corato, M., Gottschalk, E. E., Hall, B. K., Hoff, J., Kasper, P. A., Kutschke, R., Kwan, S. W., Mekkaoui, A., Menasce, D., Newsom, C., Sala, S., and Zimmermann, R. Yarema S.
- Subjects
High Energy Physics - Experiment - Abstract
The silicon pixel vertex detector is one of the key elements of the BTeV spectrometer. Detector prototypes were tested in a beam at Fermilab. We report here on the measured spatial resolution as a function of the incident angles for different sensor-readout electronics combinations. We compare the results with predictions from our Monte Carlo simulation., Comment: 7 pages, 5 figures, Invited talk given by J.C. Wang at "Vertex 2000, 9th International Workshop on Vertex Detectors", Michigan, Sept 10-15, 2000. To be published in NIM A
- Published
- 2000
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29. A study on the chemical profile and the derived health effects of heavy-duty machinery aerosol with a focus on the impact of alternative fuels
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Gawlitta, N., Orasche, J., Geldenhuys, G.L., Jakobi, G., Wattrus, M., Jennerwein, M., Michalke, B., Gröger, T.M., Forbes, P., and Zimmermann, R.
- Subjects
Atmospheric Science ,Health, Toxicology and Mutagenesis ,Management, Monitoring, Policy and Law ,Pollution ,(methylated) Pahs ,Alternative Fuels ,Combustion Aerosol ,Health Effects ,Ultrafine Particulate Matter - Abstract
The combustion of petroleum-based fossil fuels is associated with a high environmental burden. Several alternative fuels, including synthetic fuels (e.g., gas-to-liquid, GTL) and biofuels (e.g., rapeseed methyl ester, RME) have been studied in the last few years. While the advantages for the environment (sustainability of biofuels) are well known, research on the resulting health effects from combustion aerosols of these alternative fuels is still scarce. Consequently, we investigated the chemical combustion profile from three distinct fuel types, including a petroleum-based fossil fuel (B0) and two alternative fuels (GTL, RME) under real exposure conditions. We sampled particulate matter (PM2.5, PM0.25) and the gas phase from heavy-duty machinery and evaluated the general pattern of volatile and semi-volatile organic compounds, elemental and organic carbon as well as a range of transition metals in the size segregated PM and/or gas phase. The use of comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry enabled us to classify distinct methylated PAHs in the PM samples and its high abundance, especially in the fine fraction of PM. We found that (methylated) PAHs were highly abundant in the PM of B0 compared to GTL and RME. Highest concentrations of targeted aromatic species in the gas phase were released from B0. In summary, we demonstrated that GTL and RME combustion released lower amounts of chemical compounds related to adverse health effects, thus, the substitution of petroleum-based fuels could improve air quality for human and the environment.
- Published
- 2022
30. The neuropsychology of emerging psychosis and the role of working memory in episodic memory encoding
- Author
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Pflueger MO, Calabrese P, Studerus E, Zimmermann R, Gschwandtner U, Borgwardt S, Aston J, Stieglitz RD, and Riecher-Rössler A
- Subjects
At-Risk Mental State (ARMS) ,First-Episode Psychosis (FE) ,Neuropsychology ,Cognition ,Episodic Memory Encoding ,Working Memory ,Serial Position Effect ,Recency ,Semantic Cluster Ratio ,2-Back Task ,rate of learning ,Psychology ,BF1-990 ,Industrial psychology ,HF5548.7-5548.85 - Abstract
Marlon O Pflueger,1 Pasquale Calabrese,2 Erich Studerus,3 Ronan Zimmermann,4 Ute Gschwandtner,4 Stefan Borgwardt,5 Jacqueline Aston,3 Rolf-Dieter Stieglitz,6 Anita Riecher-Rössler3 1Department of Forensic Psychiatry, University of Basel Psychiatric Clinics, Basel, Switzerland; 2Division of Molecular and Cognitive Neuroscience, University of Basel, Basel, Switzerland; 3Center for Gender Research and Early Detection, University of Basel Psychiatric Hospital, Basel, Switzerland; 4Department of Neurology and Neurosurgery, Hospital of the University of Basel, Basel, Switzerland; 5Department of Psychiatry (UPK), University of Basel, Basel, Switzerland; 6Division of Clinical Psychology and Psychiatry, University of Basel, Basel, Switzerland Background: Episodic memory encoding and working memory (WM) deficits are among the first cognitive signs and symptoms in the course of schizophrenia spectrum disorders. However, it is not clear whether the deficit pattern is generalized or specific in nature. We hypothesized that encoding deficits at an early stage of the disease might be due to the more fundamental WM deficits. Methods: We examined episodic memory encoding and WM by administering the California Verbal Learning Test, a 2-back task, and the Wisconsin Card Sorting Test in 90 first-episode psychosis (FE) patients and 116 individuals with an at-risk mental state for psychosis (ARMS) compared to 57 healthy subjects. Results: Learning progress, but not span of apprehension, was diminished to a similar extent in both the ARMS and the FE. We showed that this was due to WM impairment by applying a structural equation approach. Conclusion: Thus, we conclude that verbal memory encoding deficits are secondary to primary WM impairment in emerging psychosis. Keywords: at-risk mental state, first-episode psychosis, cognition, serial position effect, recency, semantic cluster ratio, 2-back task, rate of learning
- Published
- 2018
31. Coherent Control for a Two-level System Coupled to Phonons
- Author
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Castella, H. and Zimmermann, R.
- Subjects
Condensed Matter - Strongly Correlated Electrons - Abstract
The interband polarizations induced by two phase-locked pulses in a semiconductor show strong interference effects depending on the time tau_1 separating the pulses. The four-wave mixing signal diffracted from a third pulse delayed by tau is coherently controlled by tuning tau_1. The four-wave mixing response is evaluated exactly for a two-level system coupled to a single LO phonon. In the weak coupling regime it shows oscillations with the phonon frequency which turn into sharp peaks at multiples of the phonon period for a larger coupling strength. Destructive interferences between the two phase-locked pulses produce a splitting of the phonon peaks into a doublet. For fixed tau but varying tau_1 the signal shows rapid oscillations at the interband-transition frequency, whose amplitude exhibits bursts at multiples of the phonon period., Comment: 4 pages, 4 figures, RevTex, content changed
- Published
- 1998
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32. Soil Drought Increases Leaf and Whole-Plant Water Use of Prunus dulcis Grown in the Negev Desert
- Author
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Heilmeier, H., Wartinger, A., Zimmermann, R., and Horn, R.
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- 2002
33. Influence of oxytocin receptor single nucleotide sequence variants on contractility of human myometrium: an in vitro functional study
- Author
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Füeg, F., Santos, S., Haslinger, C., Stoiber, B., Schäffer, L., Grünblatt, E., Zimmermann, R., and Simões-Wüst, A. P.
- Published
- 2019
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34. Status update on SUNDAE2 magnetic field test facility at European XFEL.
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Baader, J E, Abeghyan, S, Alanakyan, L, Casalbuoni, S, La Civita, D, Englisch, U, Marchetti, B, Yakopov, G, Yakopov, M, Ziolkowski, P, Eckoldt, H J, Hauberg, A, Lederer, S, Lilje, L, Wohlenberg, T, Zimmermann, R, and Grau, A W
- Published
- 2023
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35. Unterhalt statt Pflichtteil – eine Erwiderung auf Gerhard Otte
- Author
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Zimmermann, R., https://orcid.org/0000-0003-0348-7929, Bauer, F., Bialluch, M., Humm, A., Klapdor, L., Köhler, B., Schmidt, J., Scholz, P., and Wiedemann, D.
- Published
- 2023
36. Das englische Erbrecht als Ausprägung europäischer Rechtskultur
- Author
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Zimmermann, R.
- Published
- 2023
37. Nachlassabwicklung in Deutschland
- Author
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Schmidt, J. and Zimmermann, R.
- Published
- 2023
38. Above-Ground Biomass and Structure of Pristine Siberian Scots Pine Forests as Controlled by Competition and Fire
- Author
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Wirth, C., Schulze, W., Zimmermann, R., and Vygodskaya, N. N.
- Published
- 1999
39. Structural Features of the Binding Site for Ribosomal Protein S8 in Escherichia coli 16S rRNA Defined Using NMR Spectroscopy
- Author
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Kalurachchi, K., Uma, K., Zimmermann, R. A., and Nikonowicz, E. P.
- Published
- 1997
40. Zu guter Letzt: 'It was a dark and stormy night'
- Author
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Zimmermann, R. and https://orcid.org/0000-0003-0348-7929
- Published
- 2023
41. Inhibition of diacylglycerol lipase beta modulates lipid and endocannabinoid levels in the ex vivo human placenta
- Author
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Berger, N., Wel, T. van der, Hirschmugl, B., Baernthaler, T., Gindlhuber, J., Fawzy, N., Eichmann, T., Birner-Gruenberger, R., Zimmermann, R., Stelt, M. van der, and Wadsack, C.
- Abstract
IntroductionLipids and fatty acids are key components in metabolic processes of the human placenta, thereby contributing to the development of the fetus. Placental dyslipidemia and aberrant activity of lipases have been linked to diverse pregnancy associated complications, such as preeclampsia and preterm birth. The serine hydrolases, diacylglycerol lipase alpha and beta (DAGL alpha, DAGL beta) catalyze the degradation of diacylglycerols, leading to the formation of monoacylglycerols (MAG), including one main endocannabinoid 2-arachidonoylglycerol (2-AG). The major role of DAGL in the biosynthesis of 2-AG is evident from various studies in mice but has not been investigated in the human placenta. Here, we report the use of the small molecule inhibitor DH376, in combination with the ex vivo placental perfusion system, activity-based protein profiling (ABPP) and lipidomics, to determine the impact of acute DAGL inhibition on placental lipid networks. MethodsDAGL alpha and DAGL beta mRNA expression was detected by RT-qPCR and in situ hybridization in term placentas. Immunohistochemistry staining for CK7, CD163 and VWF was applied to localize DAGL beta transcripts to different cell types of the placenta. DAGL beta activity was determined by in- gel and MS-based activity-based protein profiling (ABPP) and validated by addition of the enzyme inhibitors LEI-105 and DH376. Enzyme kinetics were measured by EnzChek (TM) lipase substrate assay. Ex vivo placental perfusion experiments were performed +/- DH376 [1 mu M] and changes in tissue lipid and fatty acid profiles were measured by LC-MS. Additionally, free fatty acid levels of the maternal and fetal circulations were determined. ResultsWe demonstrate that mRNA expression of DAGL beta prevails in placental tissue, compared to DAGL alpha (p
- Published
- 2023
42. Cone-beam computed tomography of the head in standing equids
- Author
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Bregger, M. D. Klopfenstein, Koch, C., Zimmermann, R., Sangiorgio, D., and Schweizer-Gorgas, D.
- Published
- 2019
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43. Infrared-absorbing carbonaceous tar can dominate light absorption by marine-engine exhaust
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Corbin, J. C., Czech, H., Massabò, D., de Mongeot, F. Buatier, Jakobi, G., Liu, F., Lobo, P., Mennucci, C., Mensah, A. A., Orasche, J., Pieber, S. M., Prévôt, A. S. H., Stengel, B., Tay, L.-L., Zanatta, M., Zimmermann, R., El Haddad, I., and Gysel, M.
- Published
- 2019
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44. Development of a CT-guided standard approach for tined lead implantation at the sacral nerve root S3 in minipigs for chronic neuromodulation
- Author
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Foditsch EE and Zimmermann R
- Subjects
Computed tomography ,Sacral nerve stimulation ,Large animal model ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Elena Esra Foditsch,1 Reinhold Zimmermann2 1Urology, Spinal Cord Injury and Tissue Regeneration Center Salzburg, Paracelsus Medical University, 2University Clinic of Urology and Andrology, Salzburg General Hospital, Paracelsus Medical University, Salzburg, Austria Purpose: The aim of this study was to develop a controlled approach for sacral neuromodulation (SNM) to improve both nerve targeting and tined lead placement, for which a new computed tomography (CT)-guided implantation technique was analyzed in minipigs.Materials and methods: This study included five female, adult Göttingen minipigs. In deep sedoanalgesia, the minipigs were placed in an extended prone position. Commercially available SNM materials were used (needle, introduction sheath, and quadripolar tined lead electrode). Gross anatomy was displayed by CT, and the nerves were bilaterally identified. The optimal angles to puncture the S3 foramen, the resulting access path, and the site for the skin incision were defined subsequently. The needle puncture and the tined lead placement were followed by successive CT scans/3D-reconstruction images. Once proper CT-guided placement of the needle and electrode was established, response to functional stimuli was intraoperatively checked to verify correct positioning.Results: Successful bilateral tined lead implantation was performed in four out of five minipigs. Implantation was different from the clinical situation because the puncture was done from the contralateral side at a 30° angle to the midline and 60° horizontal angle to ensure both passage through the foramen and nerve access. Surgery time was 50–150 minutes. Stimulation response comprised a twitch of the perianal musculature and tail rotation to the contralateral side.Conclusion: We have established a new, minimally invasive, highly standardized, CT-guided SNM electrode implantation technique. Functional outcomes are clearly defined and reproducible. All procedures can be performed without complications. Future chronic stimulation studies in minipigs can thereby be conducted using a controlled and highly standardized protocol. Keywords: computed tomography, sacral nerve stimulation, large animal model
- Published
- 2016
45. Monitoring, classification, and characterization of interior Alaska forests using AIRSAR and ERS-1 SAR
- Author
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Williams, CL, McDonald, K, Rignot, E, Viereck, LA, Way, JB, and Zimmermann, R
- Subjects
Geography - Abstract
At the Bonanza Creek Experimental Forest (BCEF), past ecological research has been directed at forest successional processes on the floodplain of the Tanana River and adjacent uplands. Research at the Bonanza Creek site continues on the mosaic of forests, shrublands, and wetlands in a wide variety of successional stages on the Tanana floodplain. This paper reviews research since 1988 into the capabilities of Synthetic Aperture Radar (SAR) for monitoring, classification, and characterization of these forests using radar remote sensing and modelling techniques. Classifications of successional stages, obtained by use of different classifiers on multi-frequency and multi-polarimetric AIRSAR data, are contrasted; these classifications have been used to predict classification accuracies obtained with ERS-1 data, and to estimate the utility of an ERS-1 and RADARSAT combination for classification. Forest classifications, used in combination with ground-truth data for more than 50 forest stands, are used to summarize the distribution of biomass on the landscape. This will allow projections of future biomass. Monitoring of forest phenology, seasonality of flooding, and freeze-thaw transitions is ongoing. Also, direct monitoring of dominant tree species is demonstrating diurnal variation and interrelationships among environmental, physiological, and backscatter measurements. © 1995, Cambridge University Press. All rights reserved.
- Published
- 1995
46. Spaceborne applications of P band imaging radars for measuring forest biomass
- Author
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Rignot, EJ, Zimmermann, R, and van Zyl, JJ
- Subjects
Geophysics ,Electrical and Electronic Engineering ,Geomatic Engineering ,Geological & Geomatics Engineering - Abstract
In three sites of boreal and temperate forests, P band HH, HV, and VV polarization data combined estimate total aboveground dry woody biomass within 12 to 27% of the values derived from allometric equations, depending on forest complexity. Biomass estimates derived from HV-polarization data only are 2 to 14% less accurate. When the radar operates at circular polarization, the errors exceed 100% over flooded forests, wet or damaged trees and sparse open tall forests because double-bounce reflections of the radar signals yield radar signatures similar to that of tall and massive forests. Circular polarizations, which minimize the effect of Faraday rotation in spaceborne applications, are therefore of limited use for measuring forest biomass. In the tropical rain forest of Manu, in Peru, where forest biomass ranges from 4 kg m-2 in young forest succession up to 50 kg m-2 in old, undisturbed floodplain stands, the P band horizontal and vertical polarization data combined separate biomass classes in good agreement with forest inventory estimates. The worldwide need for large scale, updated, biomass estimates, achieved with a uniformly applied method, justifies a more in-depth exploration of multi-polarization long wavelength imaging radar applications for tropical forests inventories. © 1995 IEEE
- Published
- 1995
47. Engineered cell instructive matrices for fetal membrane healing
- Author
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Kivelio, A., Ochsenbein-Koelble, N., Zimmermann, R., and Ehrbar, M.
- Published
- 2015
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48. On the condition number anomaly of Gaussian correlation matrices
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Zimmermann, R.
- Published
- 2015
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49. Conceptual Design of a Liquid Helium Vertical Test-Stand for 2m long Superconducting Undulator Coils
- Author
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Marchetti, B., primary, Abeghyan, S., additional, Baader, J., additional, Barbanotti, S., additional, Casalbuoni, S., additional, Di Felice, M., additional, Eckoldt, H.-J., additional, Englisch, U., additional, Grattoni, V., additional, Grau, A., additional, Hauberg, A., additional, Jensch, K., additional, La Civita, D., additional, Lederer, S., additional, Lilje, L., additional, Ramalingam, R., additional, Schnautz, T., additional, Vannoni, M., additional, Yakopov, M., additional, Zimmermann, R., additional, and Ziolkowski, P., additional
- Published
- 2022
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50. Prevalence of blood-borne viral and sexually transmitted infections among homeless people in Berlin
- Author
-
Steffen, G, primary, Weber, C, additional, Cawley, C, additional, Leicht, A, additional, Sarma, N, additional, Jansen, K, additional, Kröger, S, additional, Kajikhina, K, additional, Zimmermann, R, additional, and Bremer, V, additional
- Published
- 2022
- Full Text
- View/download PDF
Catalog
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