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1. High power electrostatic beam splitter for a proton beamline

Author: M. Hartmann, D. Reggiani, J. Snuverink, H. Zhang, and M. Seidel
Subjects: Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: The High Intensity Proton Accelerator facility (HIPA) delivers a 590 MeV cw (50.6 MHz) proton beam with up to 1.4 MW beam power (2.4 mA) to spallation and meson production targets serving particle physics experiments and material research. The main accelerator is the ring cyclotron, an isochronous proton machine accelerating an injected 72 MeV beam to a final 590 MeV. A few meters downstream of the ring cyclotron, an electrostatic beam splitter was installed in the 1980s and originally designed to peel off from a 200 μA beam up to 20 μA (12 kW beam power). Future initiatives will also make use of the splitter. Specifically, as part of the Isotope and Muon Production using Advanced Cyclotron and Target technologies (IMPACT) upgrade project, Targeted Alpha Tumour Therapy and Other Oncological Solutions (TATTOOS), an online isotope separation facility will allow to produce promising radionuclides for diagnosis and therapy of cancer in quantities sufficient for clinical studies. The TATTOOS facility includes a dedicated beamline intended to operate at a beam intensity of 100 μA (60 kW beam power), requiring continuous splitting of the high-power main beam via the splitter. As a step forward toward reaching the desired beam intensity, a beam study was carried out to test the viability of the existing splitter for TATTOOS. The results of this study show that a record of 90 μA (53 kW beam power) was peeled off a horizontally and vertically enlarged beam by the splitter. The successful beam strategy employed during the study as well as the results of several key measurements are presented in this paper, with particular emphasis on diagnostic measurements. Additionally, to support the measurements, a computational model of the splitter has been implemented using Monte Carlo simulation tools, including realistic geometry, electrostatic fields, beam optics, and power deposition calculations. Overall, the results of this paper show that through the combination of beam measurements and simulations, the existing splitter can be used to reach the 100-μA beam intensity requirement for TATTOOS.
Published: 2024
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2. Eritrocitose primária em cão: relato de caso

Author: S. Gonçalves, D. Reggiani, and M.B. Moreira
Subjects: cães, eritrocitose, hidroxiuréia, Animal culture, SF1-1100
Abstract: RESUMO A eritrocitose absoluta primária, também denominada de policitemia vera, é um distúrbio mieloproliferativo crônico de causa desconhecida, caracterizado pela proliferação clonal de células-tronco eritróides neoplásicas. Acomete cães de meia-idade entre seis e sete anos. As manifestações clínicas mais comuns são letargia, fraqueza, poliúria, polidipsia, sangramentos como epistaxe, hematúria, hematoemese, hematoquezia, até mesmo convulsões e ataxia. O diagnóstico é baseado em valores altos de hematócrito, geralmente acima de 70%, excluindo-se as causas de eritrocitose secundária. As concentrações séricas de eritropoietina estão normais ou diminuídas. O tratamento consiste em flebotomia e administração de hidroxiuréia. Relata-se o caso de uma cadela, raça Bichon Frise, 11 anos, que, no início do quadro, apresentou hematócrito de 84%, letargia, ataxia, mucosas congestas, cianose de língua, poliúria e polidipsia. Realizou-se o tratamento com hidroxiuréia durante oito anos, na dose de 15 a 30 mg/kg, a cada 24 horas, sem ocorrência de efeitos colaterais ou recidiva das manifestações clínicas.
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3. Probing the losses for a high power beam

Author: M. Haj Tahar, D. Kiselev, A. Knecht, D. Laube, D. Reggiani, and J. Snuverink
Subjects: Accelerator Physics (physics.acc-ph), Nuclear and High Energy Physics, FOS: Physical sciences, Physics::Accelerator Physics, Physics - Accelerator Physics, Instrumentation, Optics (physics.optics), Physics - Optics
Abstract: The High Intensity Proton Accelerator (HIPA) cyclotron at the Paul Scherrer Institut (PSI) delivers 590 MeV CW proton beam with a maximum power of 1.42 MW. After extraction, the beam is transferred in a 120 m long channel towards two target stations (TgM and TgE) for surface muon production before depositing its remaining power at the spallation target SINQ for neutron production. As part of the High Intensity Muon Beamline (HIMB) feasibility study, the first of these targets will be replaced with a thicker one thereby increasing the rate of surface muon production. However, a key challenge for HIMB is to maintain the proton beam losses to the lowest possible levels which requires improving our understanding of the distributed losses along the MW-class beamline. To this end, a new approach was developed where the aim is to relate the experimental values of the temperature, beam profile measurements as well as beam current measurements to the combined power deposition calculations and primary beam losses using Monte Carlo simulation tools.
Published: 2023

4. Characterization of Muon and Electron Beams in the Paul Scherrer Institute PiM1 Channel for the MUSE Experiment

Author: E. Cline, W. Lin, P. Roy, P. E. Reimer, K. E. Mesick, A. Akmal, A. Alie, H. Atac, A. Atencio, C. Ayerbe Gayoso, N. Benmouna, F. Benmokhtar, J. C. Bernauer, W. J. Briscoe, J. Campbell, D. Cohen, E. O. Cohen, C. Collicott, K. Deiters, S. Dogra, E. Downie, I. P. Fernando, A. Flannery, T. Gautam, D. Ghosal, R. Gilman, A. Golossanov, B. F. Halter, J. Hirschman, Y. Ilieva, M. Kim, M. Kohl, B. Krusche, I. Lavrukhin, L. Li, B. Liang-Gilman, A. Liyanage, W. Lorenzon, P. Mohanmurthy, R. Mokal, P. Moran, S. J. Nazeer, P. Or, T. Patel, E. Piasetzky, T. Rauber, R. S. Raymond, D. Reggiani, H. Reid, G. Ron, E. Rooney, T. Rostomyan, M. Schwarz, A. Sneath, P. G. Solazzo, N. Sparveris, N. Steinberg, S. Strauch, V. Sulkosky, and N. Wuerfel
Subjects: Physics - Instrumentation and Detectors, FOS: Physical sciences, Physics::Accelerator Physics, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: The MUon Scattering Experiment, MUSE, at the Paul Scherrer Institute, Switzerland, investigates the proton charge radius puzzle, lepton universality, and two-photon exchange, via simultaneous measurements of elastic muon-proton and electron-proton scattering. The experiment uses the PiM1 secondary beam channel, which was designed for high precision pion scattering measurements. We review the properties of the beam line established for pions. We discuss the production processes that generate the electron and muon beams, and the simulations of these processes. Simulations of the $\pi$/$\mu$/$e$ beams through the channel using TURTLE and G4beamline are compared. The G4beamline simulation is then compared to several experimental measurements of the channel, including the momentum dispersion at the IFP and target, the shape of the beam spot at the target, and timing measurements that allow the beam momenta to be determined. We conclude that the PiM1 channel can be used for high precision $\pi$, $\mu$, and $e$ scattering., Comment: 20 pages, 18 figures
Published: 2021

5. Supernova neutrino burst detection with the deep underground neutrino experiment: DUNE Collaboration

Author: Abi, B. Acciarri, R. Acero, M.A. Adamov, G. Adams, D. Adinolfi, M. Ahmad, Z. Ahmed, J. Alion, T. Alonso Monsalve, S. Alt, C. Anderson, J. Andreopoulos, C. Andrews, M.P. Andrianala, F. Andringa, S. Ankowski, A. Antonova, M. Antusch, S. Aranda-Fernandez, A. Ariga, A. Arnold, L.O. Arroyave, M.A. Asaadi, J. Aurisano, A. Aushev, V. Autiero, D. Azfar, F. Back, H. Back, J.J. Backhouse, C. Baesso, P. Bagby, L. Bajou, R. Balasubramanian, S. Baldi, P. Bambah, B. Barao, F. Barenboim, G. Barker, G.J. Barkhouse, W. Barnes, C. Barr, G. Barranco Monarca, J. Barros, N. Barrow, J.L. Bashyal, A. Basque, V. Bay, F. Alba, J.L.B. Beacom, J.F. Bechetoille, E. Behera, B. Bellantoni, L. Bellettini, G. Bellini, V. Beltramello, O. Belver, D. Benekos, N. Bento Neves, F. Berger, J. Berkman, S. Bernardini, P. Berner, R.M. Berns, H. Bertolucci, S. Betancourt, M. Bezawada, Y. Bhattacharjee, M. Bhuyan, B. Biagi, S. Bian, J. Biassoni, M. Biery, K. Bilki, B. Bishai, M. Bitadze, A. Blake, A. Blanco Siffert, B. Blaszczyk, F.D.M. Blazey, G.C. Blucher, E. Boissevain, J. Bolognesi, S. Bolton, T. Bonesini, M. Bongrand, M. Bonini, F. Booth, A. Booth, C. Bordoni, S. Borkum, A. Boschi, T. Bostan, N. Bour, P. Boyd, S.B. Boyden, D. Bracinik, J. Braga, D. Brailsford, D. Brandt, A. Bremer, J. Brew, C. Brianne, E. Brice, S.J. Brizzolari, C. Bromberg, C. Brooijmans, G. Brooke, J. Bross, A. Brunetti, G. Buchanan, N. Budd, H. Caiulo, D. Calafiura, P. Calcutt, J. Calin, M. Calvez, S. Calvo, E. Camilleri, L. Caminata, A. Campanelli, M. Caratelli, D. Carini, G. Carlus, B. Carniti, P. Caro Terrazas, I. Carranza, H. Castillo, A. Castromonte, C. Cattadori, C. Cavalier, F. Cavanna, F. Centro, S. Cerati, G. Cervelli, A. Cervera Villanueva, A. Chalifour, M. Chang, C. Chardonnet, E. Chatterjee, A. Chattopadhyay, S. Chaves, J. Chen, H. Chen, M. Chen, Y. Cherdack, D. Chi, C. Childress, S. Chiriacescu, A. Cho, K. Choubey, S. Christensen, A. Christian, D. Christodoulou, G. Church, E. Clarke, P. Coan, T.E. Cocco, A.G. Coelho, J.A.B. Conley, E. Conrad, J.M. Convery, M. Corwin, L. Cotte, P. Cremaldi, L. Cremonesi, L. Crespo-Anadón, J.I. Cristaldo, E. Cross, R. Cuesta, C. Cui, Y. Cussans, D. Dabrowski, M. da Motta, H. Da Silva Peres, L. David, C. David, Q. Davies, G.S. Davini, S. Dawson, J. De, K. De Almeida, R.M. Debbins, P. De Bonis, I. Decowski, M.P. de Gouvêa, A. De Holanda, P.C. De Icaza Astiz, I.L. Deisting, A. De Jong, P. Delbart, A. Delepine, D. Delgado, M. Dell-Acqua, A. De Lurgio, P. de Mello Neto, J.R.T. DeMuth, D.M. Dennis, S. Densham, C. Deptuch, G. De Roeck, A. De Romeri, V. De Vries, J.J. Dharmapalan, R. Dias, M. Diaz, F. Díaz, J.S. Di Domizio, S. Di Giulio, L. Ding, P. Di Noto, L. Distefano, C. Diurba, R. Diwan, M. Djurcic, Z. Dokania, N. Dolinski, M.J. Domine, L. Douglas, D. Drielsma, F. Duchesneau, D. Duffy, K. Dunne, P. Durkin, T. Duyang, H. Dvornikov, O. Dwyer, D.A. Dyshkant, A.S. Eads, M. Edmunds, D. Eisch, J. Emery, S. Ereditato, A. Escobar, C.O. Escudero Sanchez, L. Evans, J.J. Ewart, E. Ezeribe, A.C. Fahey, K. Falcone, A. Farnese, C. Farzan, Y. Felix, J. Fernandez-Martinez, E. Fernandez Menendez, P. Ferraro, F. Fields, L. Filkins, A. Filthaut, F. Fitzpatrick, R.S. Flanagan, W. Fleming, B. Flight, R. Fowler, J. Fox, W. Franc, J. Francis, K. Franco, D. Freeman, J. Freestone, J. Fried, J. Friedland, A. Fuess, S. Furic, I. Furmanski, A.P. Gago, A. Gallagher, H. Gallego-Ros, A. Gallice, N. Galymov, V. Gamberini, E. Gamble, T. Gandhi, R. Gandrajula, R. Gao, S. Garcia-Gamez, D. García-Peris, M.Á. Gardiner, S. Gastler, D. Ge, G. Gelli, B. Gendotti, A. Gent, S. Ghorbani-Moghaddam, Z. Gibin, D. Gil-Botella, I. Girerd, C. Giri, A.K. Gnani, D. Gogota, O. Gold, M. Gollapinni, S. Gollwitzer, K. Gomes, R.A. Gomez Bermeo, L.V. Gomez Fajardo, L.S. Gonnella, F. Gonzalez-Cuevas, J.A. Goodman, M.C. Goodwin, O. Goswami, S. Gotti, C. Goudzovski, E. Grace, C. Graham, M. Gramellini, E. Gran, R. Granados, E. Grant, A. Grant, C. Gratieri, D. Green, P. Green, S. Greenler, L. Greenwood, M. Greer, J. Griffith, W.C. Groh, M. Grudzinski, J. Grzelak, K. Gu, W. Guarino, V. Guenette, R. Guglielmi, A. Guo, B. Guthikonda, K.K. Gutierrez, R. Guzowski, P. Guzzo, M.M. Gwon, S. Habig, A. Hackenburg, A. Hadavand, H. Haenni, R. Hahn, A. Haigh, J. Haiston, J. Hamernik, T. Hamilton, P. Han, J. Harder, K. Harris, D.A. Hartnell, J. Hasegawa, T. Hatcher, R. Hazen, E. Heavey, A. Heeger, K.M. Heise, J. Hennessy, K. Henry, S. Hernandez Morquecho, M.A. Herner, K. Hertel, L. Hesam, A.S. Hewes, J. Higuera, A. Hill, T. Hillier, S.J. Himmel, A. Hoff, J. Hohl, C. Holin, A. Hoppe, E. Horton-Smith, G.A. Hostert, M. Hourlier, A. Howard, B. Howell, R. Huang, J. Huang, J. Hugon, J. Iles, G. Ilic, N. Iliescu, A.M. Illingworth, R. Ioannisian, A. Itay, R. Izmaylov, A. James, E. Jargowsky, B. Jediny, F. Jesùs-Valls, C. Ji, X. Jiang, L. Jiménez, S. Jipa, A. Joglekar, A. Johnson, C. Johnson, R. Jones, B. Jones, S. Jung, C.K. Junk, T. Jwa, Y. Kabirnezhad, M. Kaboth, A. Kadenko, I. Kamiya, F. Karagiorgi, G. Karcher, A. Karolak, M. Karyotakis, Y. Kasai, S. Kasetti, S.P. Kashur, L. Kazaryan, N. Kearns, E. Keener, P. Kelly, K.J. Kemp, E. Ketchum, W. Kettell, S.H. Khabibullin, M. Khotjantsev, A. Khvedelidze, A. Kim, D. King, B. Kirby, B. Kirby, M. Klein, J. Koehler, K. Koerner, L.W. Kohn, S. Koller, P.P. Kordosky, M. Kosc, T. Kose, U. Kostelecký, V.A. Kothekar, K. Krennrich, F. Kreslo, I. Kudenko, Y. Kudryavtsev, V.A. Kulagin, S. Kumar, J. Kumar, R. Kuruppu, C. Kus, V. Kutter, T. Lambert, A. Lande, K. Lane, C.E. Lang, K. Langford, T. Lasorak, P. Last, D. Lastoria, C. Laundrie, A. Lawrence, A. Lazanu, I. LaZur, R. Le, T. Learned, J. LeBrun, P. Lehmann Miotto, G. Lehnert, R. Leigui de Oliveira, M.A. Leitner, M. Leyton, M. Li, L. Li, S. Li, S.W. Li, T. Li, Y. Liao, H. Lin, C.S. Lin, S. Lister, A. Littlejohn, B.R. Liu, J. Lockwitz, S. Loew, T. Lokajicek, M. Lomidze, I. Long, K. Loo, K. Lorca, D. Lord, T. LoSecco, J.M. Louis, W.C. Luk, K.B. Luo, X. Lurkin, N. Lux, T. Luzio, V.P. MacFarland, D. Machado, A.A. Machado, P. Macias, C.T. Macier, J.R. Maddalena, A. Madigan, P. Magill, S. Mahn, K. Maio, A. Major, A. Maloney, J.A. Mandrioli, G. Maneira, J. Manenti, L. Manly, S. Mann, A. Manolopoulos, K. Manrique Plata, M. Marchionni, A. Marciano, W. Marfatia, D. Mariani, C. Maricic, J. Marinho, F. Marino, A.D. Marshak, M. Marshall, C. Marshall, J. Marteau, J. Martin-Albo, J. Martinez, N. Martinez Caicedo, D.A. Martynenko, S. Mason, K. Mastbaum, A. Masud, M. Matsuno, S. Matthews, J. Mauger, C. Mauri, N. Mavrokoridis, K. Mazza, R. Mazzacane, A. Mazzucato, E. McCluskey, E. McConkey, N. McFarland, K.S. McGrew, C. McNab, A. Mefodiev, A. Mehta, P. Melas, P. Mellinato, M. Mena, O. Menary, S. Mendez, H. Menegolli, A. Meng, G. Messier, M.D. Metcalf, W. Mewes, M. Meyer, H. Miao, T. Michna, G. Miedema, T. Migenda, J. Milincic, R. Miller, W. Mills, J. Milne, C. Mineev, O. Miranda, O.G. Miryala, S. Mishra, C.S. Mishra, S.R. Mislivec, A. Mladenov, D. Mocioiu, I. Moffat, K. Moggi, N. Mohanta, R. Mohayai, T.A. Mokhov, N. Molina, J. Molina Bueno, L. Montanari, A. Montanari, C. Montanari, D. Montano Zetina, L.M. Moon, J. Mooney, M. Moor, A. Moreno, D. Morgan, B. Morris, C. Mossey, C. Motuk, E. Moura, C.A. Mousseau, J. Mu, W. Mualem, L. Mueller, J. Muether, M. Mufson, S. Muheim, F. Muir, A. Mulhearn, M. Muramatsu, H. Murphy, S. Musser, J. Nachtman, J. Nagu, S. Nalbandyan, M. Nandakumar, R. Naples, D. Narita, S. Navas-Nicolás, D. Nayak, N. Nebot-Guinot, M. Necib, L. Negishi, K. Nelson, J.K. Nesbit, J. Nessi, M. Newbold, D. Newcomer, M. Newhart, D. Nichol, R. Niner, E. Nishimura, K. Norman, A. Norrick, A. Northrop, R. Novella, P. Nowak, J.A. Oberling, M. Olivares Del Campo, A. Olivier, A. Onel, Y. Onishchuk, Y. Ott, J. Pagani, L. Pakvasa, S. Palamara, O. Palestini, S. Paley, J.M. Pallavicini, M. Palomares, C. Pantic, E. Paolone, V. Papadimitriou, V. Papaleo, R. Papanestis, A. Paramesvaran, S. Parke, S. Parsa, Z. Parvu, M. Pascoli, S. Pasqualini, L. Pasternak, J. Pater, J. Patrick, C. Patrizii, L. Patterson, R.B. Patton, S.J. Patzak, T. Paudel, A. Paulos, B. Paulucci, L. Pavlovic, Z. Pawloski, G. Payne, D. Pec, V. Peeters, S.J.M. Penichot, Y. Pennacchio, E. Penzo, A. Peres, O.L.G. Perry, J. Pershey, D. Pessina, G. Petrillo, G. Petta, C. Petti, R. Piastra, F. Pickering, L. Pietropaolo, F. Pillow, J. Pinzino, J. Plunkett, R. Poling, R. Pons, X. Poonthottathil, N. Pordes, S. Potekhin, M. Potenza, R. Potukuchi, B.V.K.S. Pozimski, J. Pozzato, M. Prakash, S. Prakash, T. Prince, S. Prior, G. Pugnere, D. Qi, K. Qian, X. Raaf, J.L. Raboanary, R. Radeka, V. Rademacker, J. Radics, B. Rafique, A. Raguzin, E. Rai, M. Rajaoalisoa, M. Rakhno, I. Rakotondramanana, H.T. Rakotondravohitra, L. Ramachers, Y.A. Rameika, R. Ramirez Delgado, M.A. Ramson, B. Rappoldi, A. Raselli, G. Ratoff, P. Ravat, S. Razafinime, H. Real, J.S. Rebel, B. Redondo, D. Reggiani-Guzzo, M. Rehak, T. Reichenbacher, J. Reitzner, S.D. Renshaw, A. Rescia, S. Resnati, F. Reynolds, A. Riccobene, G. Rice, L.C.J. Rielage, K. Rigaut, Y. Rivera, D. Rochester, L. Roda, M. Rodrigues, P. Rodriguez Alonso, M.J. Rodriguez Rondon, J. Roeth, A.J. Rogers, H. Rosauro-Alcaraz, S. Rossella, M. Rout, J. Roy, S. Rubbia, A. Rubbia, C. Russell, B. Russell, J. Ruterbories, D. Saakyan, R. Sacerdoti, S. Safford, T. Sahu, N. Sala, P. Samios, N. Sanchez, M.C. Sanders, D.A. Sankey, D. Santana, S. Santos-Maldonado, M. Saoulidou, N. Sapienza, P. Sarasty, C. Sarcevic, I. Savage, G. Savinov, V. Scaramelli, A. Scarff, A. Scarpelli, A. Schaffer, T. Schellman, H. Schlabach, P. Schmitz, D. Scholberg, K. Schukraft, A. Segreto, E. Sensenig, J. Seong, I. Sergi, A. Sergiampietri, F. Sgalaberna, D. Shaevitz, M.H. Shafaq, S. Shamma, M. Sharma, H.R. Sharma, R. Shaw, T. Shepherd-Themistocleous, C. Shin, S. Shooltz, D. Shrock, R. Simard, L. Simos, N. Sinclair, J. Sinev, G. Singh, J. Singh, J. Singh, V. Sipos, R. Sippach, F.W. Sirri, G. Sitraka, A. Siyeon, K. Smargianaki, D. Smith, A. Smith, E. Smith, P. Smolik, J. Smy, M. Snopok, P. Soares Nunes, M. Sobel, H. Soderberg, M. Solano Salinas, C.J. Söldner-Rembold, S. Solomey, N. Solovov, V. Sondheim, W.E. Sorel, M. Soto-Oton, J. Sousa, A. Soustruznik, K. Spagliardi, F. Spanu, M. Spitz, J. Spooner, N.J.C. Spurgeon, K. Staley, R. Stancari, M. Stanco, L. Steiner, H.M. Stewart, J. Stillwell, B. Stock, J. Stocker, F. Stokes, T. Strait, M. Strauss, T. Striganov, S. Stuart, A. Summers, D. Surdo, A. Susic, V. Suter, L. Sutera, C.M. Svoboda, R. Szczerbinska, B. Szelc, A.M. Talaga, R. Tanaka, H.A. Tapia Oregui, B. Tapper, A. Tariq, S. Tatar, E. Tayloe, R. Teklu, A.M. Tenti, M. Terao, K. Ternes, C.A. Terranova, F. Testera, G. Thea, A. Thompson, J.L. Thorn, C. Timm, S.C. Tonazzo, A. Torti, M. Tórtola, M. Tortorici, F. Totani, D. Toups, M. Touramanis, C. Trevor, J. Trzaska, W.H. Tsai, Y.T. Tsamalaidze, Z. Tsang, K.V. Tsverava, N. Tufanli, S. Tull, C. Tyley, E. Tzanov, M. Uchida, M.A. Urheim, J. Usher, T. Vagins, M.R. Vahle, P. Valdiviesso, G.A. Valencia, E. Vallari, Z. Valle, J.W.F. Vallecorsa, S. Van Berg, R. Van de Water, R.G. Vanegas Forero, D. Varanini, F. Vargas, D. Varner, G. Vasel, J. Vasseur, G. Vaziri, K. Ventura, S. Verdugo, A. Vergani, S. Vermeulen, M.A. Verzocchi, M. Vieira de Souza, H. Vignoli, C. Vilela, C. Viren, B. Vrba, T. Wachala, T. Waldron, A.V. Wallbank, M. Wang, H. Wang, J. Wang, Y. Wang, Y. Warburton, K. Warner, D. Wascko, M. Waters, D. Watson, A. Weatherly, P. Weber, A. Weber, M. Wei, H. Weinstein, A. Wenman, D. Wetstein, M. While, M.R. White, A. Whitehead, L.H. Whittington, D. Wilking, M.J. Wilkinson, C. Williams, Z. Wilson, F. Wilson, R.J. Wolcott, J. Wongjirad, T. Wood, K. Wood, L. Worcester, E. Worcester, M. Wret, C. Wu, W. Wu, W. Xiao, Y. Yang, G. Yang, T. Yershov, N. Yonehara, K. Young, T. Yu, B. Yu, J. Zaki, R. Zalesak, J. Zambelli, L. Zamorano, B. Zani, A. Zazueta, L. Zeller, G.P. Zennamo, J. Zeug, K. Zhang, C. Zhao, M. Zhivun, E. Zhu, G. Zimmerman, E.D. Zito, M. Zucchelli, S. Zuklin, J. Zutshi, V. Zwaska, R.
Subjects: Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Physics::Geophysics
Abstract: The deep underground neutrino experiment (DUNE), a 40-kton underground liquid argon time projection chamber experiment, will be sensitive to the electron-neutrino flavor component of the burst of neutrinos expected from the next Galactic core-collapse supernova. Such an observation will bring unique insight into the astrophysics of core collapse as well as into the properties of neutrinos. The general capabilities of DUNE for neutrino detection in the relevant few- to few-tens-of-MeV neutrino energy range will be described. As an example, DUNE’s ability to constrain the νe spectral parameters of the neutrino burst will be considered. © 2021, The Author(s).
Published: 2021

6. Volume IV The DUNE far detector single-phase technology

Author: Abi, B. Acciarri, R. Acero, M. A. Adamov, G. Adams, D. and Adinolfi, M. Ahmad, Z. Ahmed, J. Alion, T. Monsalve, S. Alonso Alt, C. Anderson, J. Andreopoulos, C. Andrews, M. Andrianala, F. Andringa, S. Ankowski, A. Antonova, M. and Antusch, S. Aranda-Fernandez, A. Ariga, A. Arnold, L. O. and Arroyave, M. A. Asaadi, J. Aurisano, A. Aushev, V and Autiero, D. Azfar, F. Back, H. Back, J. J. Backhouse, C. and Baesso, P. Bagby, L. Bajou, R. Balasubramanian, S. and Baldi, P. Bambah, B. Barao, F. Barenboim, G. Barker, G. and Barkhouse, W. Barnes, C. Barr, G. Barranco Monarca, J. and Barros, N. Barrow, J. L. Bashyal, A. Basque, V Bay, F. Bazo Alba, J. Beacom, J. F. Bechetoille, E. Behera, B. Bellantoni, L. Bellettini, G. Bellini, V Beltramello, O. Belver, D. Benekos, N. Neves, F. Bento Berger, J. and Berkman, S. Bernardini, P. Berner, R. M. Berns, H. and Bertolucci, S. Betancourt, M. Bezawada, Y. Bhattacharjee, M. and Bhuyan, B. Biagi, S. Bian, J. Biassoni, M. Biery, K. and Bilki, B. Bishai, M. Bitadze, A. Blake, A. Siffert, B. Blanco Blaszczyk, F. Blazey, G. Blucher, E. and Boissevain, J. Bolognesi, S. Bolton, T. Bonesini, M. and Bongrand, M. Bonini, F. Booth, A. Booth, C. Bordoni, S. and Borkum, A. Boschi, T. Bostan, N. Bour, P. Boyd, S. and Boyden, D. Bracinik, J. Braga, D. Brailsford, D. and Brandt, A. Bremer, J. Brew, C. Brianne, E. Brice, S. J. and Brizzolari, C. Bromberg, C. Brooijmans, G. Brooke, J. and Bross, A. Brunetti, G. Buchanan, N. Budd, H. Caiulo, D. Calafiura, P. Calcutt, J. Calin, M. Calvez, S. and Calvo, E. Camilleri, L. Caminata, A. Campanelli, M. and Caratelli, D. Carini, G. Carlus, B. Carniti, P. and Terrazas, I. Caro Carranza, H. Castillo, A. Castromonte, C. and Cattadori, C. Cavalier, F. Cavanna, F. Centro, S. and Cerati, G. Cervelli, A. Cervera Villanueva, A. Chalifour, M. and Chang, C. Chardonnet, E. Chatterjee, A. Chattopadhyay, S. Chaves, J. Chen, H. Chen, M. Chen, Y. Cherdack, D. Chi, C. Childress, S. Chiriacescu, A. Cho, K. and Choubey, S. Christensen, A. Christian, D. Christodoulou, G. and Church, E. Clarke, P. Coan, T. E. Cocco, A. G. and Coelho, J. Conley, E. Conrad, J. Convery, M. Corwin, L. and Cotte, P. Cremaldi, L. Cremonesi, L. Crespo-Anadon, I, J. Cristaldo, E. Cross, R. Cuesta, C. Cui, Y. and Cussans, D. Dabrowski, M. Da Motta, H. Peres, L. Da Silva and David, Q. Davies, G. S. Davini, S. Dawson, J. De, K. and De Almeida, R. M. Debbins, P. De Bonis, I Decowski, M. and De Gouvea, A. De Holanda, P. C. Astiz, I. L. De Icaza and Deisting, A. De Jong, P. Delbart, A. Delepine, D. and Delgado, M. Dell'Acqua, A. De Lurgio, P. De Mello Neto, J. R. DeMuth, D. M. Dennis, S. Densham, C. Deptuch, G. and De Roeck, A. De Romeri, V De Vries, J. Dharmapalan, R. and Dias, M. Diaz, F. Diaz, J. Di Domizio, S. Di Giulio, L. and Ding, P. Di Noto, L. Distefano, C. Diurba, R. Diwan, M. Djurcic, Z. Dokania, N. Dolinski, M. Domine, L. and Douglas, D. Drielsma, F. Duchesneau, D. Duffy, K. Dunne, P. Durkin, T. Duyang, H. Dvornikov, O. Dwyer, D. and Dyshkant, A. Eads, M. Edmunds, D. Eisch, J. Emery, S. and Ereditato, A. Escobar, C. Sanchez, L. Escudero Evans, J. J. Ewart, E. Ezeribe, A. C. Fahey, K. Falcone, A. and Farnese, C. Farzan, Y. Felix, J. Fernandez-Martinez, E. and Fernandez Menendez, P. Ferraro, F. Fields, L. Filkins, A. and Filthaut, F. Fitzpatrick, R. S. Flanagan, W. Fleming, B. and Flight, R. Fowler, J. Fox, W. Franc, J. Francis, K. and Franco, D. Freeman, J. Freestone, J. Fried, J. and Friedland, A. Fuess, S. Furic, I Furmanski, A. P. Gago, A. Gallagher, H. Gallego-Ros, A. Gallice, N. Galymov, V and Gamberini, E. Gamble, T. Gandhi, R. Gandrajula, R. and Gao, S. Garcia-Gamez, D. Garcia-Peris, M. A. Gardiner, S. and Gastler, D. Ge, G. Gelli, B. Gendotti, A. Gent, S. and Ghorbani-Moghaddam, Z. Gibin, D. Gil-Botella, I Girerd, C. Giri, A. Gnani, D. Gogota, O. Gold, M. and Gollapinni, S. Gollwitzer, K. Gomes, R. A. Gomez Bermeo, L. and Gomez Fajardo, L. S. Gonnella, F. Gonzalez-Cuevas, J. and Goodman, M. C. Goodwin, O. Goswami, S. Gotti, C. and Goudzovski, E. Grace, C. Graham, M. Gramellini, E. Gran, R. Granados, E. Grant, A. Grant, C. Gratieri, D. and Green, P. Green, S. Greenler, L. Greenwood, M. Greer, J. and Griffith, C. Groh, M. Grudzinski, J. Grzelak, K. Gu, W. Guarino, V Guenette, R. Guglielmi, A. Guo, B. and Guthikonda, K. Gutierrez, R. Guzowski, P. Guzzo, M. M. and Gwon, S. Habig, A. Hackenburg, A. Hadavand, H. Haenni, R. Hahn, A. Haigh, J. Haiston, J. Hamernik, T. and Hamilton, P. Han, J. Harder, K. Harris, D. A. Hartnell, J. Hasegawa, T. Hatcher, R. Hazen, E. Heavey, A. and Heeger, K. M. Hennessy, K. Henry, S. Hernandez Morquecho, M. and Herner, K. Hertel, L. Hesam, A. S. Hewes, J. and Pichardo, A. Higuera Hill, T. Hillier, S. J. Himmel, A. and Hoff, J. Hohl, C. Holin, A. Hoppe, E. Horton-Smith, G. A. Hostert, M. Hourlier, A. Howard, B. Howell, R. and Huang, J. Huang, J. Hugon, J. Iles, G. Iliescu, A. M. and Illingworth, R. Ioannisian, A. Itay, R. Izmaylov, A. and James, E. Jargowsky, B. Jediny, F. Jesus-Valls, C. Ji, X. Jiang, L. Jimenez, S. Jipa, A. Joglekar, A. and Johnson, C. Johnson, R. Jones, B. Jones, S. Jung, C. and Junk, T. Jwa, Y. Kabirnezhad, M. Kaboth, A. Kadenko, I and Kamiya, F. Karagiorgi, G. Karcher, A. Karolak, M. and Karyotakis, Y. Kasai, S. Kasetti, S. P. Kashur, L. and Kazaryan, N. Kearns, E. Keener, P. Kelly, K. J. Kemp, E. and Ketchum, W. Kettell, S. Khabibullin, M. Khotjantsev, A. and Khvedelidze, A. Kim, D. King, B. Kirby, B. Kirby, M. and Klein, J. Koehler, K. Koerner, L. W. Kohn, S. and Koller, P. P. Kordosky, M. Kosc, T. Kose, U. Kostelecky, V Kothekar, K. Krennrich, F. Kreslo, I Kudenko, Y. and Kudryavtsev, V Kulagin, S. Kumar, J. Kumar, R. Kuruppu, C. Kus, V Kutter, T. Lambert, A. Lande, K. Lane, C. E. Lang, K. Langford, T. Lasorak, P. Last, D. and Lastoria, C. Laundrie, A. Lawrence, A. Lazanu, I LaZur, R. Le, T. Learned, J. LeBrun, P. Miotto, G. Lehmann and Lehnert, R. de Oliveira, M. Leigui Leitner, M. Leyton, M. and Li, L. Li, S. Li, S. Li, T. Li, Y. Liao, H. and Lin, C. Lin, S. Lister, A. Littlejohn, B. R. Liu, J. and Lockwitz, S. Loew, T. Lokajicek, M. Lomidze, I Long, K. and Loo, K. Lorca, D. Lord, T. LoSecco, J. Louis, W. C. and Luk, K. Luo, X. Lurkin, N. Lux, T. Luzio, V. P. and MacFarland, D. Machado, A. Machado, P. Macias, C. and Macier, J. Maddalena, A. Madigan, P. Magill, S. Mahn, K. and Maio, A. Maloney, J. A. Mandrioli, G. Maneira, J. C. and Manenti, L. Manly, S. Mann, A. Manolopoulos, K. Plata, M. Manrique Marchionni, A. Marciano, W. Marfatia, D. and Mariani, C. Maricic, J. Marinho, F. Marino, A. D. and Marshak, M. Marshall, C. Marshall, J. Marteau, J. and Martin-Albo, J. Martinez, N. Caicedo, D. A. Martinez and Martynenko, S. Mason, K. Mastbaum, A. Masud, M. Matsuno, S. Matthews, J. Mauger, C. Mauri, N. Mavrokoridis, K. and Mazza, R. Mazzacane, A. Mazzucato, E. McCluskey, E. and McConkey, N. McFarland, K. S. McGrew, C. McNab, A. and Mefodiev, A. Mehta, P. Melas, P. Mellinato, M. Mena, O. and Menary, S. Mendez, H. Menegolli, A. Meng, G. and Messier, M. Metcalf, W. Mewes, M. Meyer, H. Miao, T. and Michna, G. Miedema, T. Migenda, J. Milincic, R. Miller, W. Mills, J. Milne, C. Mineev, O. Miranda, O. G. and Miryala, S. Mishra, C. Mishra, S. Mislivec, A. Mladenov, D. Mocioiu, I Moffat, K. Moggi, N. Mohanta, R. and Mohayai, T. A. Mokhov, N. Molina, J. A. Bueno, L. Molina and Montanari, A. Montanari, C. Montanari, D. Montano Zetina, L. M. Moon, J. Mooney, M. Moor, A. Moreno, D. Morgan, B. Morris, C. Mossey, C. Motuk, E. Moura, C. A. and Mousseau, J. Mu, W. Mualem, L. Mueller, J. Muether, M. and Mufson, S. Muheim, F. Muir, A. Mulhearn, M. and Muramatsu, H. Murphy, S. Musser, J. Nachtman, J. Nagu, S. Nalbandyan, M. Nandakumar, R. Naples, D. Narita, S. and Navas-Nicolas, D. Nayak, N. Nebot-Guinot, M. Necib, L. and Negishi, K. Nelson, J. K. Nesbit, J. Nessi, M. and Newbold, D. Newcomer, M. Newhart, D. Nichol, R. Niner, E. Nishimura, K. Norman, A. Northrop, R. Novella, P. and Nowak, J. A. Oberling, M. Del Campo, A. Olivares Olivier, A. and Onel, Y. Onishchuk, Y. Ott, J. Pagani, L. Pakvasa, S. Palamara, O. Palestini, S. Paley, J. M. Pallavicini, M. Palomares, C. Pantic, E. Paolone, V Papadimitriou, V and Papaleo, R. Papanestis, A. Paramesvaran, S. Parke, S. and Parsa, Z. Parvu, M. Pascoli, S. Pasqualini, L. and Pasternak, J. Pater, J. Patrick, C. Patrizii, L. and Patterson, R. B. Patton, S. Patzak, T. Paudel, A. and Paulos, B. Paulucci, L. Pavlovic, Z. Pawloski, G. Payne, D. Pec, V Peeters, S. J. Penichot, Y. Pennacchio, E. and Penzo, A. Peres, O. L. Perry, J. Pershey, D. Pessina, G. and Petrillo, G. Petta, C. Petti, R. Piastra, F. and Pickering, L. Pietropaolo, F. Pillow, J. Plunkett, R. and Poling, R. Pons, X. Poonthottathil, N. Pordes, S. and Potekhin, M. Potenza, R. Potukuchi, V, B. Pozimski, J. and Pozzato, M. Prakash, S. Prakash, T. Prince, S. Prior, G. and Pugnere, D. Qi, K. Qian, X. Raaf, J. Raboanary, R. and Radeka, V Rademacker, J. Radics, B. Rafique, A. and Raguzin, E. Rai, M. Rajaoalisoa, M. Rakhno, I and Rakotondramanana, H. Rakotondravohitra, L. Ramachers, Y. and Rameika, R. Ramirez Delgado, M. Ramson, B. Rappoldi, A. and Raselli, G. Ratoff, P. Ravat, S. Razafinime, H. Real, J. and Rebel, B. Redondo, D. Reggiani-Guzzo, M. Rehak, T. and Reichenbacher, J. Reitzner, S. D. Renshaw, A. Rescia, S. and Resnati, F. Reynolds, A. Riccobene, G. Rice, L. C. and Rielage, K. Rigaut, Y. Rivera, D. Rochester, L. Roda, M. and Rodrigues, P. Alonso, M. Rodriguez Rondon, J. Rodriguez and Roeth, A. Rogers, H. Rosauro-Alcaraz, S. Rossella, M. and Rout, J. Roy, S. Rubbia, A. Rubbia, C. Russell, B. and Russell, J. Ruterbories, D. Saakyan, R. Sacerdoti, S. and Safford, T. Sahu, N. Sala, P. Samios, N. Sanchez, M. and Sanders, D. A. Sankey, D. Santana, S. Santos-Maldonado, M. and Saoulidou, N. Sapienza, P. Sarasty, C. Sarcevic, I and Savage, G. Savinov, V Scaramelli, A. Scarff, A. and Scarpelli, A. Schaffer, T. Schellman, H. Schlabach, P. and Schmitz, D. Scholberg, K. Schukraft, A. Segreto, E. and Sensenig, J. Seong, I Sergi, A. Sergiampietri, F. and Sgalaberna, D. Shaevitz, M. Shafaq, S. Shamma, M. and Sharma, H. R. Sharma, R. Shaw, T. Shepherd-Themistocleous, C. Shin, S. Shooltz, D. Shrock, R. Simard, L. Simos, N. Sinclair, J. Sinev, G. Singh, J. Singh, J. Singh, V Sipos, R. Sippach, F. Sirri, G. Sitraka, A. and Siyeon, K. Smargianaki, D. Smith, A. Smith, A. Smith, E. and Smith, P. Smolik, J. Smy, M. Snopok, P. Nunes, M. Soares Sobel, H. Soderberg, M. Solano Salinas, C. J. and Soldner-Rembold, S. Solomey, N. Solovov, V Sondheim, W. E. and Sorel, M. Soto-Oton, J. Sousa, A. Soustruznik, K. and Spagliardi, F. Spanu, M. Spitz, J. Spooner, N. J. and Spurgeon, K. Staley, R. Stancari, M. Stanco, L. Steiner, H. Stewart, J. Stillwell, B. Stock, J. Stocker, F. and Stokes, T. Strait, M. Strauss, T. Striganov, S. Stuart, A. Summers, D. Surdo, A. Susic, V Suter, L. Sutera, C. Svoboda, R. Szczerbinska, B. Szelc, A. Talaga, R. and Tanaka, H. Oregui, B. Tapia Tapper, A. Tariq, S. Tatar, E. Tayloe, R. Teklu, A. Tenti, M. Terao, K. Ternes, C. A. Terranova, F. Testera, G. Thea, A. Thompson, J. L. and Thorn, C. Timm, S. Tonazzo, A. Torti, M. Tortola, M. and Tortorici, F. Totani, D. Toups, M. Touramanis, C. and Trevor, J. Trzaska, W. H. Tsai, Y. T. Tsamalaidze, Z. and Tsang, K. Tsverava, N. Tufanli, S. Tull, C. Tyley, E. and Tzanov, M. Uchida, M. A. Urheim, J. Usher, T. and Vagins, M. Vahle, P. Valdiviesso, G. Valencia, E. and Vallari, Z. Valle, J. W. Vallecorsa, S. Van Berg, R. Van de Water, R. G. Forero, D. Vanegas Varanini, F. Vargas, D. and Varner, G. Vasel, J. Vasseur, G. Vaziri, K. Ventura, S. Verdugo, A. Vergani, S. Vermeulen, M. A. Verzocchi, M. de Souza, H. Vieira Vignoli, C. Vilela, C. Viren, B. and Vrba, T. Wachala, T. Waldron, V, A. Wallbank, M. and Wang, H. Wang, J. Wang, Y. Wang, Y. Warburton, K. and Warner, D. Wascko, M. Waters, D. Watson, A. Weatherly, P. Weber, A. Weber, M. Wei, H. Weinstein, A. Wenman, D. Wetstein, M. While, M. R. White, A. Whitehead, L. H. and Whittington, D. Wilking, M. J. Wilkinson, C. Williams, Z. Wilson, F. Wilson, R. J. Wolcott, J. Wongjirad, T. and Wood, K. Wood, L. Worcester, E. Worcester, M. Wret, C. Wu, W. Wu, W. Xiao, Y. Yang, G. Yang, T. and Yershov, N. Yonehara, K. Young, T. Yu, B. Yu, J. and Zalesak, J. Zambelli, L. Zamorano, B. Zani, A. Zazueta, L. Zeller, G. Zennamo, J. Zeug, K. Zhang, C. Zhao, M. Zhivun, E. Zhu, G. Zimmerman, E. D. Zito, M. and Zucchelli, S. Zuklin, J. Zutshi, V Zwaska, R. DUNE Collaboration
Published: 2020

7. Volume I. Introduction to DUNE

Author: Abi, B. Acciarri, R. Acero, M. A. Adamov, G. Adams, D. and Adinolfi, M. Ahmad, Z. Ahmed, J. Alion, T. Monsalve, S. Alonso Alt, C. Anderson, J. Andreopoulos, C. Andrews, M. Andrianala, F. Andringa, S. Ankowski, A. Antonova, M. and Antusch, S. Aranda-Fernandez, A. Ariga, A. Arnold, L. O. and Arroyave, M. A. Asaadi, J. Aurisano, A. Aushev, V. and Autiero, D. Azfar, F. Back, H. Back, J. J. Backhouse, C. and Baesso, P. Bayby, L. Bajou, R. Balasubramanian, S. and Baldi, P. Bambah, B. Barao, F. Barenhoim, G. Barker, G. and Barkhouse, W. Barnes, C. Barr, G. Monarca, J. Barranco and Barros, N. Barrow, J. L. Bashyal, A. Basque, V. Bay, F. Alba, J. Bazo Beacom, J. F. Bechetoille, E. Behera, B. Bellantoni, L. Bellettini, G. Bellini, V. and Beltramello, O. Belver, D. Benckos, N. Neves, F. Bento and Berger, J. Berkman, S. Bernardini, P. Berner, R. M. and Berns, H. Bertolucci, S. Betancourt, M. Bezawada, Y. and Bhattacharjee, M. Bhuyan, B. Biagi, S. Bian, J. and Biassoni, M. Bierv, K. Bilki, B. Bishai, M. Bitadze, A. and Blake, A. Siffert, B. Blanco Blaszczyk, F. Blazey, G. and Blucher, E. Boissevain, J. Bolognesi, S. Bolton, T. and Bonesini, M. Bongrand, M. Bonini, F. Booth, A. Booth, C. and Bordoni, S. Borkum, A. Boschi, T. Bostan, N. Bour, P. Boyd, S. Bovden, D. Bracinik, J. Braga, D. and Brailsford, D. Brandt, A. Bremer, J. Brew, C. Brianne, E. Brice, S. J. Brizzolari, C. Bromherg, C. Brooijmans, G. Brooke, J. Bross, A. Brunetti, G. Buchanan, N. and Budd, H. Caiulo, D. Calaftura, P. Calcutt, J. Calin, M. and Calvez, S. Calvo, E. Camilleri, L. Caminata, A. and Campanelli, M. Caratelli, D. Carini, G. Carlus, B. and Carniti, P. Terrazas, I. Caro Carranza, H. Castillo, A. and Castromonte, C. Cattadori, C. Cavalier, F. Cavanna, F. and Centro, S. Cerati, G. Cervelli, A. Cervera Villanueva, A. and Chalifour, M. Chang, C. Chardonnet, E. Chatterjee, A. and Chattopadhyay, S. Chaves, J. Chen, H. Chen, M. Chen, Y. Cherdack, D. Chi, C. Childress, S. Chiriacescu, A. and Cho, K. Choubey, S. Christensen, A. Christian, D. and Christodoulou, G. Church, E. Clarke, P. Coan, T. E. and Cocco, A. G. Coelho, J. Conley, E. Conrad, J. Convery, M. Corwin, L. Cotte, P. Cremaldi, L. Cremonesi, L. and Crespo-Anadon, J. I. Cristaldo, E. Cross, R. Cuesta, C. and Cui, Y. Cussans, D. Dahrowski, M. Da Motta, H. Da Silva Peres, L. David, Q. Davies, G. S. Davini, S. Dawson, J. and De, K. De Almeida, R. M. Debbins, P. De Bonis, I. and Decowski, M. De Gouvea, A. De Holanda, P. C. Astiz, I. L. De Icaza Deistin, A. De Jong, P. Delbart, A. Delepine, D. and Delgado, M. Dell'Acqua, A. De Lurgio, P. De Mello Neto, J. R. DeMuth, D. M. Dennis, S. Densham, C. Deptuch, G. and De Roeck, A. De Romeri, V. De Vries, J. Dharmapalan, R. and Dias, M. Diaz, F. Diaz, J. Di Domizio, S. Di Giulio, L. Ding, P. Di Noto, L. Distefano, C. Diurba, R. and Diwan, M. Djurcic, Z. Dokania, N. Dolinski, M. Domine, L. Douglas, D. Drielsma, F. Duchesneau, D. Duffy, K. and Dunne, P. Durkin, T. Duyang, H. Dvornikov, O. Dwyer, D. and Dyshkant, A. Eads, M. Edmunds, D. Eisch, J. Emery, S. Ereditato, A. Escobar, C. Escudero Sanchez, L. Evans, J. J. Ewart, E. Ezeribe, A. C. Fahey, K. Falcone, A. and Farnese, C. Farzan, Y. Felix, J. Fernandez-Martinez, E. and Menendez, P. Fernandez Ferraro, F. Fields, L. Filkins, A. and Filthaut, F. Fitzpatrick, R. S. Flanagan, W. Fleming, B. and Flight, R. Fowler, J. Fox, W. Franc, J. Francis, K. and Franco, D. Freeman, J. Freestone, J. Fried, J. and Friedland, A. Fuess, S. Furic, I. Furmanski, A. P. Gago, A. Gallagher, H. Gallego-Ros, A. Gallice, N. Galymov, V. and Gamberini, E. Gamble, T. Gandhi, R. Gandrajula, R. and Gao, S. Garcia-Gamez, D. Garcia-Peris, M. A. Gardiner, S. and Gastler, D. Ge, G. Gelli, B. Gendotti, A. Gent, S. and Ghorbani-Moghaddam, Z. Gibin, D. Gil-Botella, L. Girerd, C. Giri, A. Gnani, D. Gogota, O. Gold, M. and Gollapinni, S. Gollwitzer, K. Gomes, R. A. Bermeo, L. Gomez and Fajardo, L. S. Gomez Gonnella, F. Gonzalez-Cuevas, J. and Goodman, M. C. Goodwin, O. Goswami, S. Gotti, C. and Goudzovski, E. Grace, C. Graham, M. Gramellini, E. Gran, R. Granados, E. Grant, A. Grant, C. Gratieri, D. and Green, P. Green, S. Greenler, L. Greenwood, M. Greer, J. and Griffith, C. Groh, M. Grudzinski, J. Grzelak, K. Gu, W. Guarino, V. Guenette, R. Guglielmi, A. Guo, B. and Guthikonda, K. Gutierrez, R. Guzowski, P. Guzzo, M. M. and Gwon, S. Habig, A. Hackenburg, A. Hadavand, H. Haenni, R. Hahn, A. Haigh, J. Haiston, J. Hamernik, T. and Hamilton, P. Han, J. Harder, K. Harris, D. A. Hartnell, J. Hasegawa, T. Hatcher, R. Hazen, E. Heavey, A. and Heeger, K. M. Hennessy, K. Henry, S. Morquecho, Vi. Hernandez Herner, K. Hertel, L. Hesam, A. S. Hewes, J. and Pichardo, A. Higuera Hill, T. Hillier, S. J. Himmel, A. and Hoff, J. Hohl, C. Holin, A. Hoppe, E. Horton-Smith, G. A. Hostert, M. Hourlier, A. Howard, B. Howell, R. and Huang, J. Huang, J. Hugon, J. Iles, G. Iliescu, A. M. and Illingworth, R. Ioannisian, A. 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McGrew, C. McNab, A. and Mefodiev, A. Mehta, P. Melas, P. Mellinato, V. Mena, O. and Mcnary, S. Mendez, H. Menegolli, A. Meng, G. and Messier, V. Metcalf, W. Mewes, M. Meyer, H. Miao, T. and Michna, G. Miedema, T. Migenda, J. Milincic, R. Miller, W. Mills, J. Milne, C. Mineev, O. Miranda, O. G. and Miryala, S. Mishra, C. Mishra, S. Mislivec, A. Mladenov, D. Mocioiu, I. Moffat, K. Moggi, N. Mohanta, R. and Mohayai, T. A. Mokhov, N. Molina, J. A. Bueno, L. Molina and Montanari, A. Montanari, C. Montanari, D. Montano Zetina, L. M. Moon, J. Mooney, M. Moor, A. Moreno, D. Morgan, B. Morris, C. Mossey, C. Motuk, E. Moura, C. A. and Mousseau, J. Mu, W. Mualem, L. Mueller, J. Muether, M. and Mufson, S. Muheim, F. Muir, A. Mulhearn, M. and Muramatsu, H. Murphy, S. Musser, J. Nachtman, J. Nagu, S. Nalbandyan, M. Nandakumar, R. Naples, D. Narita, S. and Navas-Nicolas, D. Nayak, N. Nebot-Guinot, M. Necib, L. and Negishi, K. Nelson, J. K. Nesbit, J. Nessi, M. and Newbold, D. Newcomer, M. 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Warburton, K. Warner, D. Wascko, M. Waters, D. Watson, A. Weatherly, P. and Weber, A. Weber, M. Wei, H. Weinstein, A. Wenman, D. and Wetstein, M. While, M. R. White, A. Whitehead, L. H. and Whittington, D. Wilking, M. J. Wilkinson, C. Williams, Z. and Wilson, F. Wilson, R. J. Wolcott, J. Wongjirad, T. and Wood, K. Wood, L. Worcester, E. Worcester, M. Wret, C. and Wu, W. Wu, W. Xiao, Y. Yang, G. Yang, T. and Yershov, N. Yonehara, K. Young, T. Yu, B. Yu, J. and Zalesak, J. Zambelli, L. Zamorano, B. Zani, A. Zazueta, L. Zeller, G. Zennamo, J. Zeug, K. Zhang, C. Zhao, M. Zhivun, E. Zhu, G. Zimmerman, E. D. Zito, M. and Zuccilelli, S. Zuklin, J. Zuishi, V. Zwaska, R. DUNE Collaboration
Published: 2020

8. Long-baseline neutrino oscillation physics potential of the DUNE experiment: DUNE Collaboration

Author: Abi, B. Acciarri, R. Acero, M.A. Adamov, G. Adams, D. Adinolfi, M. Ahmad, Z. Ahmed, J. Alion, T. Monsalve, S.A. Alt, C. Anderson, J. Andreopoulos, C. Andrews, M.P. Andrianala, F. Andringa, S. Ankowski, A. Antonova, M. Antusch, S. Aranda-Fernandez, A. Ariga, A. Arnold, L.O. Arroyave, M.A. Asaadi, J. Aurisano, A. Aushev, V. Autiero, D. Azfar, F. Back, H. Back, J.J. Backhouse, C. Baesso, P. Bagby, L. Bajou, R. Balasubramanian, S. Baldi, P. Bambah, B. Barao, F. Barenboim, G. Barker, G.J. Barkhouse, W. Barnes, C. Barr, G. Monarca, J.B. Barros, N. Barrow, J.L. Bashyal, A. Basque, V. Bay, F. Alba, J.L.B. Beacom, J.F. Bechetoille, E. Behera, B. Bellantoni, L. Bellettini, G. Bellini, V. Beltramello, O. Belver, D. Benekos, N. Neves, F.B. Berger, J. Berkman, S. Bernardini, P. Berner, R.M. Berns, H. Bertolucci, S. Betancourt, M. Bezawada, Y. Bhattacharjee, M. Bhuyan, B. Biagi, S. Bian, J. Biassoni, M. Biery, K. Bilki, B. Bishai, M. Bitadze, A. Blake, A. Siffert, B.B. Blaszczyk, F.D.M. Blazey, G.C. Blucher, E. Boissevain, J. Bolognesi, S. Bolton, T. Bonesini, M. Bongrand, M. Bonini, F. Booth, A. Booth, C. Bordoni, S. Borkum, A. Boschi, T. Bostan, N. Bour, P. Boyd, S.B. Boyden, D. Bracinik, J. Braga, D. Brailsford, D. Brandt, A. Bremer, J. Brew, C. Brianne, E. Brice, S.J. Brizzolari, C. Bromberg, C. Brooijmans, G. Brooke, J. Bross, A. Brunetti, G. Buchanan, N. Budd, H. Caiulo, D. Calafiura, P. Calcutt, J. Calin, M. Calvez, S. Calvo, E. Camilleri, L. Caminata, A. Campanelli, M. Caratelli, D. Carini, G. Carlus, B. Carniti, P. Terrazas, I.C. Carranza, H. Castillo, A. Castromonte, C. Cattadori, C. Cavalier, F. Cavanna, F. Centro, S. Cerati, G. Cervelli, A. Villanueva, A.C. Chalifour, M. Chang, C. Chardonnet, E. Chatterjee, A. Chattopadhyay, S. Chaves, J. Chen, H. Chen, M. Chen, Y. Cherdack, D. Chi, C. Childress, S. Chiriacescu, A. Cho, K. Choubey, S. Christensen, A. Christian, D. Christodoulou, G. Church, E. Clarke, P. Coan, T.E. Cocco, A.G. Coelho, J.A.B. Conley, E. Conrad, J.M. Convery, M. Corwin, L. Cotte, P. Cremaldi, L. Cremonesi, L. Crespo-Anadón, J.I. Cristaldo, E. Cross, R. Cuesta, C. Cui, Y. Cussans, D. Dabrowski, M. Motta, H. Da Silva Peres, L. David, C. David, Q. Davies, G.S. Davini, S. Dawson, J. De, K. De Almeida, R.M. Debbins, P. De Bonis, I. Decowski, M.P. de Gouvêa, A. De Holanda, P.C. De Icaza Astiz, I.L. Deisting, A. De Jong, P. Delbart, A. Delepine, D. Delgado, M. Dell’Acqua, A. De Lurgio, P. de Mello Neto, J.R.T. DeMuth, D.M. Dennis, S. Densham, C. Deptuch, G. De Roeck, A. De Romeri, V. De Vries, J.J. Dharmapalan, R. Dias, M. Diaz, F. Díaz, J.S. Domizio, S.D. Giulio, L.D. Ding, P. Noto, L.D. Distefano, C. Diurba, R. Diwan, M. Djurcic, Z. Dokania, N. Dolinski, M.J. Domine, L. Douglas, D. Drielsma, F. Duchesneau, D. Duffy, K. Dunne, P. Durkin, T. Duyang, H. Dvornikov, O. Dwyer, D.A. Dyshkant, A.S. Eads, M. Edmunds, D. Eisch, J. Emery, S. Ereditato, A. Escobar, C.O. Sanchez, L.E. Evans, J.J. Ewart, E. Ezeribe, A.C. Fahey, K. Falcone, A. Farnese, C. Farzan, Y. Felix, J. Fernandez-Martinez, E. Menendez, P.F. Ferraro, F. Fields, L. Filkins, A. Filthaut, F. Fitzpatrick, R.S. Flanagan, W. Fleming, B. Flight, R. Fowler, J. Fox, W. Franc, J. Francis, K. Franco, D. Freeman, J. Freestone, J. Fried, J. Friedland, A. Fuess, S. Furic, I. Furmanski, A.P. Gago, A. Gallagher, H. Gallego-Ros, A. Gallice, N. Galymov, V. Gamberini, E. Gamble, T. Gandhi, R. Gandrajula, R. Gao, S. Garcia-Gamez, D. García-Peris, M.Á. Gardiner, S. Gastler, D. Ge, G. Gelli, B. Gendotti, A. Gent, S. Ghorbani-Moghaddam, Z. Gibin, D. Gil-Botella, I. Girerd, C. Giri, A.K. Gnani, D. Gogota, O. Gold, M. Gollapinni, S. Gollwitzer, K. Gomes, R.A. Bermeo, L.V.G. Fajardo, L.S.G. Gonnella, F. Gonzalez-Cuevas, J.A. Goodman, M.C. Goodwin, O. Goswami, S. Gotti, C. Goudzovski, E. Grace, C. Graham, M. Gramellini, E. Gran, R. Granados, E. Grant, A. Grant, C. Gratieri, D. Green, P. Green, S. Greenler, L. Greenwood, M. Greer, J. Griffith, W.C. Groh, M. Grudzinski, J. Grzelak, K. Gu, W. Guarino, V. Guenette, R. Guglielmi, A. Guo, B. Guthikonda, K.K. Gutierrez, R. Guzowski, P. Guzzo, M.M. Gwon, S. Habig, A. Hackenburg, A. Hadavand, H. Haenni, R. Hahn, A. Haigh, J. Haiston, J. Hamernik, T. Hamilton, P. Han, J. Harder, K. Harris, D.A. Hartnell, J. Hasegawa, T. Hatcher, R. Hazen, E. Heavey, A. Heeger, K.M. Heise, J. Hennessy, K. Henry, S. Morquecho, M.A.H. Herner, K. Hertel, L. Hesam, A.S. Hewes, J. Higuera, A. Hill, T. Hillier, S.J. Himmel, A. Hoff, J. Hohl, C. Holin, A. Hoppe, E. Horton-Smith, G.A. Hostert, M. Hourlier, A. Howard, B. Howell, R. Huang, J. Huang, J. Hugon, J. Iles, G. Ilic, N. Iliescu, A.M. Illingworth, R. Ioannisian, A. Itay, R. Izmaylov, A. James, E. Jargowsky, B. Jediny, F. Jesùs-Valls, C. Ji, X. Jiang, L. Jiménez, S. Jipa, A. Joglekar, A. Johnson, C. Johnson, R. Jones, B. Jones, S. Jung, C.K. Junk, T. Jwa, Y. Kabirnezhad, M. Kaboth, A. Kadenko, I. Kamiya, F. Karagiorgi, G. Karcher, A. Karolak, M. Karyotakis, Y. Kasai, S. Kasetti, S.P. Kashur, L. Kazaryan, N. Kearns, E. Keener, P. Kelly, K.J. Kemp, E. Ketchum, W. Kettell, S.H. Khabibullin, M. Khotjantsev, A. Khvedelidze, A. Kim, D. King, B. Kirby, B. Kirby, M. Klein, J. Koehler, K. Koerner, L.W. Kohn, S. Koller, P.P. Kordosky, M. Kosc, T. Kose, U. Kostelecký, V.A. Kothekar, K. Krennrich, F. Kreslo, I. Kudenko, Y. Kudryavtsev, V.A. Kulagin, S. Kumar, J. Kumar, R. Kuruppu, C. Kus, V. Kutter, T. Lambert, A. Lande, K. Lane, C.E. Lang, K. Langford, T. Lasorak, P. Last, D. Lastoria, C. Laundrie, A. Lawrence, A. Lazanu, I. LaZur, R. Le, T. Learned, J. LeBrun, P. Miotto, G.L. Lehnert, R. de Oliveira, M.A.L. Leitner, M. Leyton, M. Li, L. Li, S. Li, S.W. Li, T. Li, Y. Liao, H. Lin, C.S. Lin, S. Lister, A. Littlejohn, B.R. Liu, J. Lockwitz, S. Loew, T. Lokajicek, M. Lomidze, I. Long, K. Loo, K. Lorca, D. Lord, T. LoSecco, J.M. Louis, W.C. Luk, K.B. Luo, X. Lurkin, N. Lux, T. Luzio, V.P. MacFarland, D. Machado, A.A. Machado, P. Macias, C.T. Macier, J.R. 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Subjects: Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: The sensitivity of the Deep Underground Neutrino Experiment (DUNE) to neutrino oscillation is determined, based on a full simulation, reconstruction, and event selection of the far detector and a full simulation and parameterized analysis of the near detector. Detailed uncertainties due to the flux prediction, neutrino interaction model, and detector effects are included. DUNE will resolve the neutrino mass ordering to a precision of 5σ, for all δCP values, after 2 years of running with the nominal detector design and beam configuration. It has the potential to observe charge-parity violation in the neutrino sector to a precision of 3σ (5σ) after an exposure of 5 (10) years, for 50% of all δCP values. It will also make precise measurements of other parameters governing long-baseline neutrino oscillation, and after an exposure of 15 years will achieve a similar sensitivity to sin 22 θ13 to current reactor experiments. © 2020, The Author(s).
Published: 2020

9. Neutrino interaction classification with a convolutional neural network in the DUNE far detector

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Pons, X. and Poonthottathil, N. Pordes, S. Potekhin, M. Potenza, R. and Potukuchi, B. V. K. S. Pozimski, J. Pozzato, M. Prakash, S. Prakash, T. Prince, S. Prior, G. Pugnere, D. Qi, K. Qian, X. Raaf, J. L. Raboanary, R. Radeka, V. and Rademacker, J. Radics, B. Radovic, A. Rafique, A. and Raguzin, E. Rai, M. Rajaoalisoa, M. Rakhno, I. and Rakotondramanana, H. T. Rakotondravohitra, L. Ramachers, Y. A. and Rameika, R. Delgado, M. A. Ramirez Ramson, B. Rappoldi, A. Raselli, G. Ratoff, P. Ravat, S. Razafinime, H. and Real, J. S. Rebel, B. Redondo, D. Reggiani-Guzzo, M. and Rehak, T. Reichenbacher, J. Reitzner, S. D. Renshaw, A. and Rescia, S. Resnati, F. Reynolds, A. Riccobene, G. Rice, L. C. J. Rielage, K. Rigaut, Y. Rivera, D. Rochester, L. and Roda, M. Rodrigues, P. Alonso, M. J. Rodriguez Rondon, J. Rodriguez Roeth, A. J. Rogers, H. Rosauro-Alcaraz, S. and Rossella, M. Rout, J. Roy, S. Rubbia, A. Rubbia, C. and Russell, B. Russell, J. Ruterbories, D. Saakyan, R. and Sacerdoti, S. Safford, T. Sahu, N. Sala, P. Samios, N. and Sanchez, M. C. Sanders, D. A. Sankey, D. Santana, S. and Santos-Maldonado, M. Saoulidou, N. Sapienza, P. Sarasty, C. and Sarcevic, I. Savage, G. Savinov, V. Scaramelli, A. and Scarff, A. Scarpelli, A. Schaffer, T. Schellman, H. and Schlabach, P. Schmitz, D. Scholberg, K. Schukraft, A. and Segreto, E. Sensenig, J. Seong, I. Sergi, A. and Sergiampietri, F. Sgalaberna, D. Shaevitz, M. H. Shafaq, S. and Shamma, M. Sharma, H. R. Sharma, R. Shaw, T. and Shepherd-Themistocleous, C. Shin, S. Shooltz, D. Shrock, R. and Simard, L. Simos, N. Sinclair, J. Sinev, G. Singh, J. Singh, J. Singh, V. Sipos, R. Sippach, F. W. and Sirri, G. Sitraka, A. Siyeon, K. Smargianaki, D. Smith, A. Smith, A. Smith, E. Smith, P. Smolik, J. Smy, M. and Snopok, P. Soares Nunes, M. Sobel, H. Soderberg, M. and Salinas, C. J. Solano Soldner-Rembold, S. Solomey, N. and Solovov, V. Sondheim, W. E. Sorel, M. Soto-Oton, J. and Sousa, A. Soustruznik, K. Spagliardi, F. Spanu, M. and Spitz, J. Spooner, N. J. C. Spurgeon, K. Staley, R. and Stancari, M. Stanco, L. Steiner, H. M. Stewart, J. and Stillwell, B. Stock, J. Stocker, F. Stokes, T. Strait, M. Strauss, T. Striganov, S. Stuart, A. Summers, D. and Surdo, A. Susic, V. Suter, L. Sutera, C. M. Svoboda, R. and Szczerbinska, B. Szelc, A. M. Talaga, R. Tanaka, H. A. and Oregui, B. Tapia Tapper, A. Tariq, S. Tatar, E. and Tayloe, R. Teklu, A. M. Tenti, M. Terao, K. Ternes, C. A. Terranova, F. Testera, G. Thea, A. Thompson, J. L. and Thorn, C. Timm, S. C. Tonazzo, A. Torti, M. Tortola, M. Tortorici, F. Totani, D. Toups, M. Touramanis, C. and Trevor, J. Trzaska, W. H. Tsai, Y. T. Tsamalaidze, Z. and Tsang, K. V. Tsverava, N. Tufanli, S. Tull, C. Tyley, E. and Tzanov, M. Uchida, M. A. Urheim, J. Usher, T. and Vagins, M. R. Vahle, P. Valdiviesso, G. A. Valencia, E. and Vallari, Z. Valle, J. W. F. Vallecorsa, S. Van Berg, R. and Van de Water, R. G. Vanegas Forero, D. Varanini, F. Vargas, D. Varner, G. Vasel, J. Vasseur, G. Vaziri, K. and Ventura, S. Verdugo, A. Vergani, S. Vermeulen, M. A. and Verzocchi, M. Vieira de Souza, H. Vignoli, C. Vilela, C. and Viren, B. Vrba, T. Wachala, T. Waldron, A. V. Wallbank, M. Wang, H. Wang, J. Wang, Y. Wang, Y. Warburton, K. and Warner, D. Wascko, M. Waters, D. Watson, A. and Weatherly, P. Weber, A. Weber, M. Wei, H. Weinstein, A. and Wenman, D. Wetstein, M. While, M. R. White, A. and Whitehead, L. H. Whittington, D. Wilking, M. J. Wilkinson, C. Williams, Z. Wilson, F. Wilson, R. J. Wolcott, J. and Wongjirad, T. Wood, K. Wood, L. Worcester, E. Worcester, M. Wret, C. Wu, W. Wu, W. Xiao, Y. Yang, G. and Yang, T. Yershov, N. Yonehara, K. Young, T. Yu, B. and Yu, J. Zaki, R. Zalesak, J. Zambelli, L. Zamorano, B. and Zani, A. Zazueta, L. Zeller, G. P. Zennamo, J. Zeug, K. Zhang, C. Zhao, M. Zhivun, E. Zhu, G. Zimmerman, E. D. Zito, M. Zucchelli, S. Zuklin, J. Zutshi, V. and Zwaska, R. DUNE Collaboration
Subjects: Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: The Deep Underground Neutrino Experiment is a next-generation neutrino oscillation experiment that aims to measure CP-violation in the neutrino sector as part of a wider physics program. A deep learning approach based on a convolutional neural network has been developed to provide highly efficient and pure selections of electron neutrino and muon neutrino charged-current interactions. The electron neutrino (antineutrino) selection efficiency peaks at 90% (94%) and exceeds 85% (90%) for reconstructed neutrino energies between 2-5 GeV. The muon neutrino (antineutrino) event selection is found to have a maximum efficiency of 96% (97%) and exceeds 90% (95%) efficiency for reconstructed neutrino energies above 2 GeV. When considering all electron neutrino and antineutrino interactions as signal, a selection purity of 90% is achieved. These event selections are critical to maximize the sensitivity of the experiment to CP-violating effects.
Published: 2020

10. Volume III DUNE far detector technical coordination

Author: Abi, B. Acciarri, R. Acero, M. A. Adamov, G. Adams, D. and Adinolfi, M. Ahmad, Z. Ahmed, J. Alion, T. Monsalve, S. Alonso Alt, C. Anderson, J. Andreopoulos, C. Andrews, M. Andrianala, F. Andringa, S. Ankowski, A. Antonova, M. and Antusch, S. Aranda-Fernandez, A. Ariga, A. Arnold, L. O. and Arroyave, M. A. Asaadi, J. Aurisano, A. Aushev, V and Autiero, D. Azfar, F. Back, H. Back, J. J. Backhouse, C. and Baesso, P. Bagby, L. Bajou, R. Balasubramanian, S. and Baldi, P. Bambah, B. Barao, F. Barenboim, G. Barker, G. and Barkhouse, W. Barnes, C. Barr, G. Barranco Monarca, J. and Barros, N. Barrow, J. L. Bashyal, A. Basque, V Bay, F. Bazo Alba, J. Beacom, J. F. Bechetoille, E. Behera, B. Bellantoni, L. Bellettini, G. Bellini, V Beltramello, O. Belver, D. Benekos, N. Neves, F. Bento Berger, J. and Berkman, S. Bernardini, P. Berner, R. M. Berns, H. and Bertolucci, S. Betancourt, M. Bezawada, Y. Bhattacharjee, M. and Bhuyan, B. Biagi, S. Bian, J. Biassoni, M. Biery, K. and Bilki, B. Bishai, M. Bitadze, A. Blake, A. Siffert, B. Blanco Blaszczyk, F. Blazey, G. Blucher, E. and Boissevain, J. Bolognesi, S. Bolton, T. Bonesini, M. and Bongrand, M. Bonini, F. Booth, A. Booth, C. Bordoni, S. and Borkum, A. Boschi, T. Bostan, N. Bour, P. Boyd, S. and Boyden, D. Bracinik, J. Braga, D. Brailsford, D. and Brandt, A. Bremer, J. Brew, C. Brianne, E. Brice, S. J. and Brizzolari, C. Bromberg, C. Brooijmans, G. Brooke, J. and Bross, A. Brunetti, G. Buchanan, N. Budd, H. Caiulo, D. Calafiura, P. Calcutt, J. Calin, M. Calvez, S. and Calvo, E. Camilleri, L. Caminata, A. Campanelli, M. and Caratelli, D. Carini, G. Carlus, B. Carniti, P. and Terrazas, I. Caro Carranza, H. Castillo, A. Castromonte, C. and Cattadori, C. Cavalier, F. Cavanna, F. Centro, S. and Cerati, G. Cervelli, A. Cervera Villanueva, A. Chalifour, M. and Chang, C. Chardonnet, E. Chatterjee, A. Chattopadhyay, S. Chaves, J. Chen, H. Chen, M. Chen, Y. Cherdack, D. Chi, C. Childress, S. Chiriacescu, A. Cho, K. and Choubey, S. Christensen, A. Christian, D. Christodoulou, G. and Church, E. Clarke, P. Coan, T. E. Cocco, A. G. and Coelho, J. Conley, E. Conrad, J. Convery, M. Corwin, L. and Cotte, P. Cremaldi, L. Cremonesi, L. Crespo-Anadon, I, J. Cristaldo, E. Cross, R. Cuesta, C. Cui, Y. and Cussans, D. Dabrowski, M. Da Motta, H. Peres, L. Da Silva and David, Q. Davies, G. S. Davini, S. Dawson, J. De, K. and De Almeida, R. M. Debbins, P. De Bonis, I Decowski, M. and De Gouvea, A. De Holanda, P. C. Astiz, I. L. De Icaza and Deisting, A. De Jong, P. Delbart, A. Delepine, D. and Delgado, M. Dell'Acqua, A. De Lurgio, P. De Mello Neto, J. R. DeMuth, D. M. Dennis, S. Densham, C. Deptuch, G. and De Roeck, A. De Romeri, V De Vries, J. Dharmapalan, R. and Dias, M. Diaz, F. Diaz, J. Di Domizio, S. Di Giulio, L. and Ding, P. Di Noto, L. Distefano, C. Diurba, R. Diwan, M. Djurcic, Z. Dokania, N. Dolinski, M. Domine, L. and Douglas, D. Drielsma, F. Duchesneau, D. Duffy, K. Dunne, P. Durkin, T. Duyang, H. Dvornikov, O. Dwyer, D. and Dyshkant, A. Eads, M. Edmunds, D. Eisch, J. Emery, S. and Ereditato, A. Escobar, C. Sanchez, L. Escudero Evans, J. J. Ewart, E. Ezeribe, A. C. Fahey, K. Falcone, A. and Farnese, C. Farzan, Y. Felix, J. Fernandez-Martinez, E. and Fernandez Menendez, P. Ferraro, F. Fields, L. Filkins, A. and Filthaut, F. Fitzpatrick, R. S. Flanagan, W. Fleming, B. and Flight, R. Fowler, J. Fox, W. Franc, J. Francis, K. and Franco, D. Freeman, J. Freestone, J. Fried, J. and Friedland, A. Fuess, S. Furic, I Furmanski, A. P. Gago, A. Gallagher, H. Gallego-Ros, A. Gallice, N. Galymov, V and Gamberini, E. Gamble, T. Gandhi, R. Gandrajula, R. and Gao, S. Garcia-Gamez, D. Garcia-Peris, M. A. Gardiner, S. and Gastler, D. Ge, G. Gelli, B. Gendotti, A. Gent, S. and Ghorbani-Moghaddam, Z. Gibin, D. Gil-Botella, I Girerd, C. Giri, A. Gnani, D. Gogota, O. Gold, M. and Gollapinni, S. Gollwitzer, K. Gomes, R. A. Gomez Bermeo, L. and Gomez Fajardo, L. S. Gonnella, F. Gonzalez-Cuevas, J. and Goodman, M. C. Goodwin, O. Goswami, S. Gotti, C. and Goudzovski, E. Grace, C. Graham, M. Gramellini, E. Gran, R. Granados, E. Grant, A. Grant, C. Gratieri, D. and Green, P. Green, S. Greenler, L. Greenwood, M. Greer, J. and Griffith, C. Groh, M. Grudzinski, J. Grzelak, K. Gu, W. Guarino, V Guenette, R. Guglielmi, A. Guo, B. and Guthikonda, K. Gutierrez, R. Guzowski, P. Guzzo, M. M. and Gwon, S. Habig, A. Hackenburg, A. Hadavand, H. Haenni, R. Hahn, A. Haigh, J. Haiston, J. Hamernik, T. and Hamilton, P. Han, J. Harder, K. Harris, D. A. Hartnell, J. Hasegawa, T. Hatcher, R. Hazen, E. Heavey, A. and Heeger, K. M. Hennessy, K. Henry, S. Hernandez Morquecho, M. and Herner, K. Hertel, L. Hesam, A. S. Hewes, J. and Pichardo, A. Higuera Hill, T. Hillier, S. J. Himmel, A. and Hoff, J. Hohl, C. Holin, A. Hoppe, E. Horton-Smith, G. A. Hostert, M. Hourlier, A. Howard, B. Howell, R. and Huang, J. Huang, J. Hugon, J. Iles, G. Iliescu, A. M. and Illingworth, R. Ioannisian, A. Itay, R. Izmaylov, A. and James, E. Jargowsky, B. Jediny, F. Jesus-Valls, C. Ji, X. Jiang, L. Jimenez, S. Jipa, A. Joglekar, A. and Johnson, C. Johnson, R. Jones, B. Jones, S. Jung, C. and Junk, T. Jwa, Y. Kabirnezhad, M. Kaboth, A. Kadenko, I and Kamiya, F. Karagiorgi, G. Karcher, A. Karolak, M. and Karyotakis, Y. Kasai, S. Kasetti, S. P. Kashur, L. and Kazaryan, N. Kearns, E. Keener, P. Kelly, K. J. Kemp, E. and Ketchum, W. Kettell, S. Khabibullin, M. Khotjantsev, A. and Khvedelidze, A. Kim, D. King, B. Kirby, B. Kirby, M. and Klein, J. Koehler, K. Koerner, L. W. Kohn, S. and Koller, P. P. Kordosky, M. Kosc, T. Kose, U. Kostelecky, V Kothekar, K. Krennrich, F. Kreslo, I Kudenko, Y. and Kudryavtsev, V Kulagin, S. Kumar, J. Kumar, R. Kuruppu, C. Kus, V Kutter, T. Lambert, A. Lande, K. Lane, C. E. Lang, K. Langford, T. Lasorak, P. Last, D. and Lastoria, C. Laundrie, A. Lawrence, A. Lazanu, I LaZur, R. Le, T. Learned, J. LeBrun, P. Miotto, G. Lehmann and Lehnert, R. de Oliveira, M. Leigui Leitner, M. Leyton, M. and Li, L. Li, S. Li, S. Li, T. Li, Y. Liao, H. and Lin, C. Lin, S. Lister, A. Littlejohn, B. R. Liu, J. and Lockwitz, S. Loew, T. Lokajicek, M. Lomidze, I Long, K. and Loo, K. Lorca, D. Lord, T. LoSecco, J. Louis, W. C. and Luk, K. Luo, X. Lurkin, N. Lux, T. Luzio, V. P. and MacFarland, D. Machado, A. Machado, P. Macias, C. and Macier, J. Maddalena, A. Madigan, P. Magill, S. Mahn, K. and Maio, A. Maloney, J. A. Mandrioli, G. Maneira, J. C. and Manenti, L. Manly, S. Mann, A. Manolopoulos, K. Plata, M. Manrique Marchionni, A. Marciano, W. Marfatia, D. and Mariani, C. Maricic, J. Marinho, F. Marino, A. D. and Marshak, M. Marshall, C. Marshall, J. Marteau, J. and Martin-Albo, J. Martinez, N. Caicedo, D. A. Martinez and Martynenko, S. Mason, K. Mastbaum, A. Masud, M. Matsuno, S. Matthews, J. Mauger, C. Mauri, N. Mavrokoridis, K. and Mazza, R. Mazzacane, A. Mazzucato, E. McCluskey, E. and McConkey, N. McFarland, K. S. McGrew, C. McNab, A. and Mefodiev, A. Mehta, P. Melas, P. Mellinato, M. Mena, O. and Menary, S. Mendez, H. Menegolli, A. Meng, G. and Messier, M. Metcalf, W. Mewes, M. Meyer, H. Miao, T. and Michna, G. Miedema, T. Migenda, J. Milincic, R. Miller, W. Mills, J. Milne, C. Mineev, O. Miranda, O. G. and Miryala, S. Mishra, C. Mishra, S. Mislivec, A. Mladenov, D. Mocioiu, I Moffat, K. Moggi, N. Mohanta, R. and Mohayai, T. A. Mokhov, N. Molina, J. A. Bueno, L. Molina and Montanari, A. Montanari, C. Montanari, D. Montano Zetina, L. M. Moon, J. Mooney, M. Moor, A. Moreno, D. Morgan, B. Morris, C. Mossey, C. Motuk, E. Moura, C. A. and Mousseau, J. Mu, W. Mualem, L. Mueller, J. Muether, M. and Mufson, S. Muheim, F. Muir, A. Mulhearn, M. and Muramatsu, H. Murphy, S. Musser, J. Nachtman, J. Nagu, S. Nalbandyan, M. Nandakumar, R. Naples, D. Narita, S. and Navas-Nicolas, D. Nayak, N. Nebot-Guinot, M. Necib, L. and Negishi, K. Nelson, J. K. Nesbit, J. Nessi, M. and Newbold, D. Newcomer, M. Newhart, D. Nichol, R. Niner, E. Nishimura, K. Norman, A. Northrop, R. Novella, P. and Nowak, J. A. Oberling, M. Del Campo, A. Olivares Olivier, A. and Onel, Y. Onishchuk, Y. Ott, J. Pagani, L. Pakvasa, S. Palamara, O. Palestini, S. Paley, J. M. Pallavicini, M. Palomares, C. Pantic, E. Paolone, V Papadimitriou, V and Papaleo, R. Papanestis, A. Paramesvaran, S. Parke, S. and Parsa, Z. Parvu, M. Pascoli, S. Pasqualini, L. and Pasternak, J. Pater, J. Patrick, C. Patrizii, L. and Patterson, R. B. Patton, S. Patzak, T. Paudel, A. and Paulos, B. Paulucci, L. Pavlovic, Z. Pawloski, G. Payne, D. Pec, V Peeters, S. J. Penichot, Y. Pennacchio, E. and Penzo, A. Peres, O. L. Perry, J. Pershey, D. Pessina, G. and Petrillo, G. Petta, C. Petti, R. Piastra, F. and Pickering, L. Pietropaolo, F. Pillow, J. Plunkett, R. and Poling, R. Pons, X. Poonthottathil, N. Pordes, S. and Potekhin, M. Potenza, R. Potukuchi, V, B. Pozimski, J. and Pozzato, M. Prakash, S. Prakash, T. Prince, S. Prior, G. and Pugnere, D. Qi, K. Qian, X. Raaf, J. Raboanary, R. and Radeka, V Rademacker, J. Radics, B. Rafique, A. and Raguzin, E. Rai, M. Rajaoalisoa, M. Rakhno, I and Rakotondramanana, H. Rakotondravohitra, L. Ramachers, Y. and Rameika, R. Delgado, M. Ramirez Ramson, B. Rappoldi, A. and Raselli, G. Ratoff, P. Ravat, S. Razafinime, H. Real, J. and Rebel, B. Redondo, D. Reggiani-Guzzo, M. Rehak, T. and Reichenbacher, J. Reitzner, S. D. Renshaw, A. Rescia, S. and Resnati, F. Reynolds, A. Riccobene, G. Rice, L. C. and Rielage, K. Rigaut, Y. Rivera, D. Rochester, L. Roda, M. and Rodrigues, P. Alonso, M. Rodriguez Rondon, J. Rodriguez and Roeth, A. Rogers, H. Rosauro-Alcaraz, S. Rossella, M. and Rout, J. Roy, S. Rubbia, A. Rubbia, C. Russell, B. and Russell, J. Ruterbories, D. Saakyan, R. Sacerdoti, S. and Safford, T. Sahu, N. Sala, P. Samios, N. Sanchez, M. and Sanders, D. A. Sankey, D. Santana, S. Santos-Maldonado, M. and Saoulidou, N. Sapienza, P. Sarasty, C. Sarcevic, I and Savage, G. Savinov, V Scaramelli, A. Scarff, A. and Scarpelli, A. Schaffer, T. Schellman, H. Schlabach, P. and Schmitz, D. Scholberg, K. Schukraft, A. Segreto, E. and Sensenig, J. Seong, I Sergi, A. Sergiampietri, F. and Sgalaberna, D. Shaevitz, M. Shafaq, S. Shamma, M. and Sharma, H. R. Sharma, R. Shaw, T. Shepherd-Themistocleous, C. Shin, S. Shooltz, D. Shrock, R. Simard, L. Simos, N. Sinclair, J. Sinev, G. Singh, J. Singh, J. Singh, V Sipos, R. Sippach, F. Sirri, G. Sitraka, A. and Siyeon, K. Smargianaki, D. Smith, A. Smith, A. Smith, E. and Smith, P. Smolik, J. Smy, M. Snopok, P. Nunes, M. Soares Sobel, H. Soderberg, M. Solano Salinas, C. J. and Soldner-Rembold, S. Solomey, N. Solovov, V Sondheim, W. E. and Sorel, M. Soto-Oton, J. Sousa, A. Soustruznik, K. and Spagliardi, F. Spanu, M. Spitz, J. Spooner, N. J. and Spurgeon, K. Staley, R. Stancari, M. Stanco, L. Steiner, H. Stewart, J. Stillwell, B. Stock, J. Stocker, F. and Stokes, T. Strait, M. Strauss, T. Striganov, S. Stuart, A. Summers, D. Surdo, A. Susic, V Suter, L. Sutera, C. Svoboda, R. Szczerbinska, B. Szelc, A. Talaga, R. and Tanaka, H. Oregui, B. Tapia Tapper, A. Tariq, S. Tatar, E. Tayloe, R. Teklu, A. Tenti, M. Terao, K. Ternes, C. A. Terranova, F. Testera, G. Thea, A. Thompson, J. L. and Thorn, C. Timm, S. Tonazzo, A. Torti, M. Tortola, M. and Tortorici, F. Totani, D. Toups, M. Touramanis, C. and Trevor, J. Trzaska, W. H. Tsai, Y. T. Tsamalaidze, Z. and Tsang, K. Tsverava, N. Tufanli, S. Tull, C. Tyley, E. and Tzanov, M. Uchida, M. A. Urheim, J. Usher, T. and Vagins, M. Vahle, P. Valdiviesso, G. Valencia, E. and Vallari, Z. Valle, J. W. Vallecorsa, S. Van Berg, R. Van de Water, R. G. Forero, D. Vanegas Varanini, F. Vargas, D. and Varner, G. Vasel, J. Vasseur, G. Vaziri, K. Ventura, S. Verdugo, A. Vergani, S. Vermeulen, M. A. Verzocchi, M. de Souza, H. Vieira Vignoli, C. Vilela, C. Viren, B. and Vrba, T. Wachala, T. Waldron, V, A. Wallbank, M. and Wang, H. Wang, J. Wang, Y. Wang, Y. Warburton, K. and Warner, D. Wascko, M. Waters, D. Watson, A. Weatherly, P. Weber, A. Weber, M. Wei, H. Weinstein, A. Wenman, D. Wetstein, M. While, M. R. White, A. Whitehead, L. H. and Whittington, D. Wilking, M. J. Wilkinson, C. Williams, Z. Wilson, F. Wilson, R. J. Wolcott, J. Wongjirad, T. and Wood, K. Wood, L. Worcester, E. Worcester, M. Wret, C. Wu, W. Wu, W. Xiao, Y. Yang, G. Yang, T. and Yershov, N. Yonehara, K. Young, T. Yu, B. Yu, J. and Zalesak, J. Zambelli, L. Zamorano, B. Zani, A. Zazueta, L. Zeller, G. Zennamo, J. Zeug, K. Zhang, C. Zhao, M. Zhivun, E. Zhu, G. Zimmerman, E. D. Zito, M. and Zucchelli, S. Zuklin, J. Zutshi, V Zwaska, R. DUNE Collaboration
Published: 2020

11. Eritrocitose primária em cão: relato de caso

Author: D. Reggiani, S. Gonçalves, and M.B. Moreira
Subjects: 0301 basic medicine, 03 medical and health sciences, 030104 developmental biology, General Veterinary, cães, eritrocitose, lcsh:Animal culture, hidroxiuréia, lcsh:SF1-1100
Abstract: RESUMO A eritrocitose absoluta primária, também denominada de policitemia vera, é um distúrbio mieloproliferativo crônico de causa desconhecida, caracterizado pela proliferação clonal de células-tronco eritróides neoplásicas. Acomete cães de meia-idade entre seis e sete anos. As manifestações clínicas mais comuns são letargia, fraqueza, poliúria, polidipsia, sangramentos como epistaxe, hematúria, hematoemese, hematoquezia, até mesmo convulsões e ataxia. O diagnóstico é baseado em valores altos de hematócrito, geralmente acima de 70%, excluindo-se as causas de eritrocitose secundária. As concentrações séricas de eritropoietina estão normais ou diminuídas. O tratamento consiste em flebotomia e administração de hidroxiuréia. Relata-se o caso de uma cadela, raça Bichon Frise, 11 anos, que, no início do quadro, apresentou hematócrito de 84%, letargia, ataxia, mucosas congestas, cianose de língua, poliúria e polidipsia. Realizou-se o tratamento com hidroxiuréia durante oito anos, na dose de 15 a 30 mg/kg, a cada 24 horas, sem ocorrência de efeitos colaterais ou recidiva das manifestações clínicas.
Published: 2018

12. Shielding an MCP Detector for a Space-Borne Mass Spectrometer Against the Harsh Radiation Environment in Jupiter’s Magnetosphere

Author: André Galli, Daniele Piazza, S. Barabash, Hualin Xiao, R. Marcinkowski, Davide Lasi, Matthias Lüthi, D. Reggiani, Stefan Karlsson, Marek Tulej, Manuel Grande, A. Cervelli, W. Hajdas, T. Knight, Peter Wurz, and Stefan Meyer
Subjects: Physics, Nuclear and High Energy Physics, Spacecraft, 010308 nuclear & particles physics, business.industry, Physics::Instrumentation and Detectors, Bremsstrahlung, Astronomy, Magnetosphere, 01 natural sciences, 7. Clean energy, Particle detector, Jupiter, Optics, Nuclear Energy and Engineering, 13. Climate action, 0103 physical sciences, Electromagnetic shielding, Physics::Space Physics, Microchannel plate detector, Astrophysics::Earth and Planetary Astrophysics, Electrical and Electronic Engineering, Magnetosphere of Jupiter, business, 010303 astronomy & astrophysics
Abstract: Detectors of scientific instruments on spacecraft flying through Jupiter radiation belts need to be protected from high fluxes of penetrating radiation by means of radiation shields. Electrons constitute the most difficult component of Jupiter’s magnetosphere to shield from, because of their abundance, penetration depth in matter, and intensity of bremsstrahlung radiation generated upon interaction with the shielding material. For the Neutral and Ion Mass spectrometer (NIM) of the Particle Environment Package (PEP) instrument suite on board the European Space Agency’s mission JUpiter Icy moons Explorer (JUICE), we devised a shielding design made of an aluminum and tantalum stack to reduce the radiation-induced noise on its Micro-Channel Plate (MCP) detector. To predict the expected radiation background in the mass spectra in space, we manufactured a flight-like shielded detector and submitted it to radiation testing at the Paul Scherrer Institut with an electron beam in the energy range ~ 30 to ~ 345 MeV. The results of this test provide a verification of the NIM capability to fulfill its science requirements in the mission’s worst-case scenario (the Europa flyby), and give insights into new directions of optimization of shielding elements’ design for NIM and similar instrument bound to operate in a harsh radiation environment.
Published: 2017
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13. Experimental investigation of the radiation shielding efficiency of a MCP detector in the radiation environment near Jupiter’s moon Europa

Author: Davide Lasi, W. Hajdas, Marek Tulej, André Galli, Peter Wurz, L. Kalla, Stefan Karlsson, D. Reggiani, Laurent Desorgher, Daniele Piazza, Stefan Meyer, and Matthias Lüthi
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Bremsstrahlung, Particle accelerator, Electron, Radiation, 01 natural sciences, 7. Clean energy, Particle detector, law.invention, Optics, 13. Climate action, law, 0103 physical sciences, Electromagnetic shielding, Physics::Accelerator Physics, business, Particle beam, 010303 astronomy & astrophysics, Instrumentation, Beam (structure)
Abstract: Neutral Ion Mass spectrometer (NIM) is one of the instruments in the Particle Environmental Package (PEP) designed for the JUICE mission of ESA to the Jupiter system. NIM, equipped with a sensitive MCP ion detector, will conduct detailed measurements of the chemical composition of Jovian icy moons exospheres. To achieve high sensitivity of the instrument, radiation effects due to the high radiation background (high-energy electrons and protons) around Jupiter have to be minimised. We investigate the performance of an Al–Ta–Al composite stack as a potential shielding against high-energy electrons. Experiments were performed at the PiM1 beam line of the High Intensity Proton Accelerator Facilities located at the Paul Scherrer Institute, Villigen, Switzerland. The facility delivers a particle beam containing e − , μ − and π − with momentum from 17.5 to 345 MeV/c (Hajdas et al., 2014). The measurements of the radiation environment generated during the interaction of primary particles with the Al–Ta–Al material were conducted with dedicated beam diagnostic methods and with the NIM MCP detector. In parallel, modelling studies using GEANT4 and GRAS suites were performed to identify products of the interaction and predict ultimate fluxes and particle rates at the MCP detector. Combination of experiment and modelling studies yields detailed characterisation of the radiation fields produced by the interaction of the incident e − with the shielding material in the range of the beam momentum from 17.5 to 345 MeV/c. We derived the effective MCP detection efficiency to primary and secondary radiation and effective shielding transmission coefficients to incident high-energy electron beam in the range of applied beam momenta. This study shows that the applied shielding attenuates efficiently high-energy electrons. Nevertheless, owing to nearly linear increase of the bremsstrahlung production rate with incident beam energy, above 130 MeV their detection rates measured by the MCP detector compares to the MCP rate of the incident electron beam. We define key performance parameters for the shielding and show direction of its improvements by introducing additional layer of material to attenuate γ-rays and reduce the MCP sensitivity to the penetrating radiation. The experiments also verify the predictions by modelling tools used currently for optimisation of shielding against high-energy particles.
Published: 2016

14. Minimally Invasive Laminate Veneers: Clinical Aspects in Treatment Planning and Cementation Procedures

Author: M. F. Hayashida, Ederson Aureo Gonçalves Betiol, Yasmine Mendes Pupo, R. D. Reggiani, Guilherme Berger, and R. K. Morita
Subjects: business.industry, Dentistry, RK1-715, Case Report, 030206 dentistry, Contact lens, 03 medical and health sciences, 0302 clinical medicine, Medicine, 030212 general & internal medicine, business, Radiation treatment planning, General Dentistry
Abstract: When a definitive aesthetic treatment is determined, it is crucial to grant the patient’s wish with the necessary dental treatment. Thus, conservative treatments that are the solution to aesthetic problems involving morphologic modifications and provide the result that the patient expects should always be the first therapeutic option. In this context, ceramic laminate veneers, also known as “contact lens,” are capable of providing an extremely faithful reproduction of the natural teeth with great color stability and periodontal biocompatibility. Minimal or no preparation veneers are heavily advertised as the answer to our patients’ cosmetic needs, which they can be if they are used correctly in the appropriate case. This report is about ultraconservative restorations to achieve functional and aesthetic rehabilitation through treatment planning. Thus, clinicians should be aware that the preparation for laminate veneers remains within enamel, to ensure the bond strength and avoid or minimize the occurrence of postoperative sensitivity.
Published: 2016

15. Measurement of parton distributions of strange quarks in the nucleon from charged-kaon production in deep-inelastic scattering on the deuteron

Author: A. Reischl, W. Augustyniak, R. Perez-Benito, B. Maiheu, Alessandra Fantoni, D. Veretennikov, M. Negodaev, B. Hommez, G. Ciullo, Tetsuya Hasegawa, M. Hoek, E. De Sanctis, V. A. Gapienko, W.H.A. Hesselink, B. Zihlmann, Y. Naryshkin, P. E. Reimer, A. Kisselev, J. G. Rubin, A. Brull, B. Tchuiko, M. Kopytin, Cynthia Marie Hadjidakis, Y. Miyachi, A. Nass, G. Gapienko, I. Lehmann, D. Hasch, A. López Ruiz, Z. Akopov, A. Elalaoui-Moulay, Frank Ellinghaus, C. Shearer, B. Seitz, A. Hillenbrand, Y. Imazu, E. Nappi, Y. Van Haarlem, Michael Tytgat, E. R. Kinney, Y. Holler, A. Airapetian, U. Elschenbroich, S. Taroian, P. Lenisa, David Mahon, Y. Salomatin, B. Marianski, A. Trzcinski, P. B. van der Nat, J. Burns, Shan Wang, F. Stinzing, Andreas Schäfer, H. E. Jackson, V. G. Krivokhijine, A. Funel, B. Q. Ma, J. J. M. Steijger, Michael Düren, G. van der Steenhoven, A. Osborne, M. Stancari, P. Zupranski, C. Riedl, S. E. Rock, P. Di Nezza, V. Vikhrov, L. Rubacek, R. De Leo, A. Rostomyan, K. Rith, C. B. Van Hulse, A. Borissov, A. R. Reolon, A. Avetissian, M. Capiluppi, P. Liebing, A. Ivanilov, S. Belostotski, G. Rosner, H. Böttcher, V. Bryzgalov, J. Dreschler, L. De Nardo, W. Yu, F. Garibaldi, Morgan Murray, G. Iarygin, Zhenyu Ye, E. C. Aschenauer, G. Hill, K. P. Schüler, Y. X. Ye, P.F. Dalpiaz, J. Stewart, I. Vilardi, Andreas Mussgiller, A. Andrus, M. Diefenthaler, V. Gharibyan, P. Tait, L. A. Linden-Levy, W.-D. Nowak, T. A. Shibata, E. Avetissian, M. Demey, Nicola Bianchi, R.O. Avakian, H. Marukyan, C. Bonomo, E. Cisbani, V. A. Kozlov, D. Reggiani, G. Schnell, F. Giordano, S. Joosten, J. Streit, I. M. Gregor, H. Ye, A. Jgoun, Arne Vandenbroucke, Riccardo Fabbri, L. Manfré, Stephen V. Gliske, H. Guler, M. Varanda, L. Felawka, X. R. Lu, L. Lagamba, S. Yen, G. P. Capitani, Ralf Kaiser, E. Steffens, G. Gavrilov, L. Lapikás, M. Contalbrigo, Martin Raithel, I. Sanjiev, Naomi C R Makins, M. Ehrenfried, Andrey V. Izotov, C. A. Miller, D. Gabbert, Tsutomu Kobayashi, M. Statera, S. Frullani, N. Pickert, Dirk Ryckbosch, D. Zeiler, C. Vogel, V. A. Korotkov, G. Elbakian, S. Lu, Y. J. Mao, P. Kravchenko, Adel Terkulov, T. Keri, L. L. Pappalardo, Hasko Stenzel, Wouter Deconinck, Valeria Muccifora, V. Mexner, A. Nagaitsev, N. Akopov, S. Yaschenko, Vitaly Shutov, H. P. Blok, Wolfgang Lorenzon, Ivana Hristova, R. Lamb, (Astro)-Particles Physics, Photo Conversion Materials, and Student Lab and Education
Subjects: Quark, Particle physics, Strange quark, Nuclear and High Energy Physics, Nuclear Theory, FOS: Physical sciences, Parton, 01 natural sciences, NO, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 13.60.-r, 13.88.+e, 14.20.Dh, 14.65.-q, 0103 physical sciences, ddc:530, SDG 14 - Life Below Water, 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, Scattering, Deep inelastic scattering, Helicity, Strange matter, Physics and Astronomy, High Energy Physics::Experiment, Nucleon
Abstract: The momentum and helicity density distributions of the strange quark sea in the nucleon are obtained in leading order from charged-kaon production in deep-inelastic scattering on the deuteron. The distributions are extracted from spin-averaged K+/- multiplicities, and from K+/- and inclusive double-spin asymmetries for scattering of polarized positrons by a polarized deuterium target. The shape of the momentum distribution is softer than that of the average of the ubar and dbar quarks. In the region of measurement 0.02 < x < 0.6 and Q^2 > 1.0 GeV^2, the helicity distribution is zero within experimental uncertainties., 5 pages, 5 figures, 1 table; text slightly expanded, 10 references added
Published: 2008
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16. First measurement of the hydrogen spin-exchange collision cross-section in the low temperature region

Author: P. Lenisa, G. Ciullo, B. Braun, H. Marukyan, M. Stancari, H. Kolster, D. Reggiani, P. F. Dalpiaz, C. Baumgarten, E. Steffens, A. Nass, and M. Capiluppi
Subjects: Physics, HERMES experiment, Hydrogen, Atomic and molecular beam sources and techniques, Polarization in interactions and scattering, Optical physics, chemistry.chemical_element, DESY, Plasma, Atmospheric temperature range, Atomic and Molecular Physics, and Optics, chemistry, ddc:530, Atomic physics, Spin (physics), Hyperfine structure
Abstract: The spin-exchange collision cross-section for hydrogen atoms has been measured for the first time in the low temperature range 40–100 K by using the polarized hydrogen gas target of the HERMES experiment at DESY (Hamburg, Germany). The results agree with a previous measurement in the overlapping temperature region 80–100 K, while seem to hint an increasing behaviour with temperature in the region 50–80 K.
Published: 2008

17. The COMPASS experiment at CERN

Author: P. Abbon, E. Albrecht, V.Yu. Alexakhin, Yu. Alexandrov, G.D. Alexeev, M.G. Alekseev, A. Amoroso, H. Angerer, V.A. Anosov, B. Badełek, F. Balestra, J. Ball, J. Barth, G. Baum, M. Becker, Y. Bedfer, P. Berglund, C. Bernet, R. Bertini, M. Bettinelli, R. Birsa, J. Bisplinghoff, P. Bordalo, M. Bosteels, F. Bradamante, A. Braem, A. Bravar, A. Bressan, G. Brona, E. Burtin, M.P. Bussa, V.N. Bytchkov, M. Chalifour, A. Chapiro, M. Chiosso, P. Ciliberti, A. Cicuttin, M. Colantoni, A.A. Colavita, S. Costa, M.L. Crespo, P. Cristaudo, T. Dafni, N. d’Hose, S. Dalla Torre, C. d’Ambrosio, S. Das, S.S. Dasgupta, E. Delagnes, R. De Masi, P. Deck, N. Dedek, D. Demchenko, O.Yu. Denisov, L. Dhara, V. Diaz, N. Dibiase, A.M. Dinkelbach, A.V. Dolgopolov, A. Donati, S.V. Donskov, V.A. Dorofeev, N. Doshita, D. Durand, V. Duic, W. Dünnweber, A. Efremov, P.D. Eversheim, W. Eyrich, M. Faessler, V. Falaleev, P. Fauland, A. Ferrero, L. Ferrero, M. Finger, H. Fischer, C. Franco, J. Franz, F. Fratnik, J.M. Friedrich, V. Frolov, U. Fuchs, R. Garfagnini, L. Gatignon, F. Gautheron, O.P. Gavrichtchouk, S. Gerassimov, R. Geyer, J.M. Gheller, A. Giganon, M. Giorgi, B. Gobbo, S. Goertz, A.M. Gorin, F. Gougnaud, S. Grabmüller, O.A. Grajek, A. Grasso, B. Grube, A. Grünemaier, A. Guskov, F. Haas, R. Hagemann, J. Hannappel, D. von Harrach, T. Hasegawa, J. Heckmann, S. Hedicke, F.H. Heinsius, R. Hermann, C. Heß, F. Hinterberger, M. von Hodenberg, N. Horikawa, S. Horikawa, I. Horn, C. Ilgner, A.I. Ioukaev, S. Ishimoto, I. Ivanchin, O. Ivanov, T. Iwata, R. Jahn, A. Janata, R. Joosten, N.I. Jouravlev, E. Kabuß, V. Kalinnikov, D. Kang, F. Karstens, W. Kastaun, B. Ketzer, G.V. Khaustov, Yu.A. Khokhlov, J. Kiefer, Yu. Kisselev, F. Klein, K. Klimaszewski, S. Koblitz, J.H. Koivuniemi, V.N. Kolosov, E.V. Komissarov, K. Kondo, K. Königsmann, A.K. Konoplyannikov, I. Konorov, V.F. Konstantinov, A.S. Korentchenko, A. Korzenev, A.M. Kotzinian, N.A. Koutchinski, O. Kouznetsov, K. Kowalik, D. Kramer, N.P. Kravchuk, G.V. Krivokhizhin, Z.V. Kroumchtein, J. Kubart, R. Kuhn, V. Kukhtin, F. Kunne, K. Kurek, N.A. Kuzmin, M. Lamanna, J.M. Le Goff, M. Leberig, A.A. Lednev, A. Lehmann, V. Levinski, S. Levorato, V. I Lyashenko, J. Lichtenstadt, T. Liska, I. Ludwig, A. Maggiora, M. Maggiora, A. Magnon, G.K. Mallot, A. Mann, I.V. Manuilov, C. Marchand, J. Marroncle, A. Martin, J. Marzec, L. Masek, F. Massmann, T. Matsuda, D. Matthiä, A.N. Maximov, G. Menon, W. Meyer, A. Mielech, Yu.V. Mikhailov, M.A. Moinester, F. Molinié, F. Mota, A. Mutter, T. Nagel, O. Nähle, J. Nassalski, S. Neliba, F. Nerling, D. Neyret, M. Niebuhr, T. Niinikoski, V.I. Nikolaenko, A.A. Nozdrin, A.G. Olshevsky, M. Ostrick, A. Padee, P. Pagano, S. Panebianco, B. Parsamyan, D. Panzieri, S. Paul, B. Pawlukiewicz, H. Pereira, D.V. Peshekhonov, V.D. Peshekhonov, D. Piedigrossi, G. Piragino, S. Platchkov, K. Platzer, J. Pochodzalla, J. Polak, V.A. Polyakov, G. Pontecorvo, A.A. Popov, J. Pretz, S. Procureur, C. Quintans, J.-F. Rajotte, S. Ramos, I. Razaq, P. Rebourgeard, D. Reggiani, G. Reicherz, A. Richter, F. Robinet, E. Rocco, E. Rondio, L. Ropelewski, J.Y. Roussé, A.M. Rozhdestvensky, D. Ryabchikov, A.G. Samartsev, V.D. Samoylenko, A. Sandacz, M. Sans Merce, H. Santos, M.G. Sapozhnikov, F. Sauli, I.A. Savin, P. Schiavon, C. Schill, T. Schmidt, H. Schmitt, L. Schmitt, P. Schönmeier, W. Schroeder, D. Seeharsch, M. Seimetz, D. Setter, A. Shaligin, O.Yu. Shevchenko, A.A. Shishkin, H.-W. Siebert, L. Silva, F. Simon, L. Sinha, A.N. Sissakian, M. Slunecka, G.I. Smirnov, D. Sora, S. Sosio, F. Sozzi, A. Srnka, F. Stinzing, M. Stolarski, V.P. Sugonyaev, M. Sulc, R. Sulej, G. Tarte, N. Takabayashi, V.V. Tchalishev, S. Tessaro, F. Tessarotto, A. Teufel, D. Thers, L.G. Tkatchev, T. Toeda, V.V. Tokmenin, S. Trippel, J. Urban, R. Valbuena, G. Venugopal, M. Virius, N.V. Vlassov, A. Vossen, M. Wagner, R. Webb, E. Weise, Q. Weitzel, U. Wiedner, M. Wiesmann, R. Windmolders, S. Wirth, W. Wiślicki, H. Wollny, A.M. Zanetti, K. Zaremba, M. Zavertyaev, J. Zhao, R. Ziegler, M. Ziembicki, Y.L. Zlobin, A. Zvyagin, Abbon, P, Albrecht, E, ALEXAKHIN V., Yu, Alexandrov, Yu, ALEXEEV G., D, ALEKSEEV M., G, Amoroso, A, Angerer, H, ANOSOV V., A, Badelek, B, Balestra, F, Ball, J, Barth, J, Baum, G, Becker, M, Bedfer, Y, Berglund, P, Bernet, C, Bertini, R, Bettinelli, M, Birsa, R, Bisplinghoff, J, Bordalo, P, Bosteels, M, Bradamante, Franco, Braem, A, Bravar, A, Bressan, Andrea, Brona, G, Burtin, E, BUSSA M., P, BYTCHKOV V., N, Chalifour, M, Chapiro, A, Chiosso, M, Ciliberti, Piero, Cicuttin, A, Colantoni, M, COLAVITA A., A, Costa, S, CRESPO M., L, Cristaudo, P, Dafni, T, D'Hose, N, DALLA TORRE, S, D'Ambrosio, C, Das, S, DASGUPTA S., S, Delagnes, E, DE MASI, R, Deck, P, Dedek, N, Demchenko, D, DENISOV O., Yu, Dhara, L, Diaz, V, Dibiase, N, DINKELBACH A., M, DOLGOPOLOV A., V, Donati, A, DONSKOV S., V, DOROFEEV V., A, Doshita, N, Durand, D, Duic, V, Dünnweber, W, Efremov, A, EVERSHEIM P., D, Eyrich, W, Faessler, M, Falaleev, V, Fauland, P, Ferrero, A, Ferrero, L, Finger, M, FINGER M., Jr, Fischer, H, Franco, C, Franz, J, Fratnik, F, FRIEDRICH J., M, Frolov, V, Fuchs, U, Garfagnini, R, Gatignon, L, Gautheron, F, GAVRICHTCHOUK O., P, Gerassimov, S, Geyer, R, GHELLER J., M, Giganon, A, Giorgi, Marcello, Gobbo, B, Goertz, S, GORIN A., M, Gougnaud, F, Grabmüller, S, GRAJEK O., A, Grasso, A, Grube, B, Grünemaier, A, Guskov, A, Haas, F, Hagemann, R, Hannappel, J, VON HARRACH, D, Hasegawa, T, Heckmann, J, Hedicke, S, HEINSIUS F., H, Hermann, R, Hess, C, Hinterberger, F, VON HODENBERG, M, Horikawa, N, Horikawa, S, Horn, I, Ilgner, C, IOUKAEV A., I, Ishimoto, S, Ivanchin, I, Ivanov, O, Iwata, T, Jahn, R, Janata, A, Joosten, R, JOURAVLEV N., I, Kabuss, E, Kalinnikov, V, Kang, D, Karstens, F, Kastaun, W, Ketzer, B, KHAUSTOV G., V, KHOKHLOV Y. U., A, Kiefer, J, Kisselev, Yu, Klein, F, Klimaszewski, K, Koblitz, S, KOIVUNIEMI J., H, KOLOSOV V., N, KOMISSAROV E., V, Kondo, K, Königsmann, K, KONOPLYANNIKOV A., K, Konorov, I, KONSTANTINOV V., F, KORENTCHENKO A., S, Korzenev, A, KOTZINIAN A., M, KOUTCHINSKI N., A, Kouznetsov, O, Kowalik, K, Kramer, D, KRAVCHUK N., P, KRIVOKHIZHIN G., V, KROUMCHTEIN Z., V, Kubart, J, Kuhn, R, Kukhtin, V, Kunne, F, Kurek, K, KUZMIN N., A, Lamanna, M, LE GOFF J., M, Leberig, M, LEDNEV A., A, Lehmann, A, Levinski, V, Levorato, Stefano, I., LYASHENKO V, Lichtenstadt, J, Liska, T, Ludwig, I, Maggiora, A, Maggiora, M, Magnon, A, MALLOT G., K, Mann, A, MANUILOV I., V, Marchand, C, Marroncle, J, Martin, Anna, Marzec, J, Masek, L, Massmann, F, Matsuda, T, Matthiä, D, MAXIMOV A., N, Menon, G, Meyer, W, Mielech, A, MIKHAILOV Y. U., V, MOINESTER M., A, Molinié, F, Mota, F, Mutter, A, Nagel, T, Nähle, O, Nassalski, J, Neliba, S, Nerling, F, Neyret, D, Niebuhr, M, Niinikoski, T, NIKOLAENKO V., I, NOZDRIN A., A, OLSHEVSKY A., G, Ostrick, M, Padee, A, Pagano, P, Panebianco, S, Parsamyan, B, Panzieri, D, Paul, S, Pawlukiewicz, B, Pereira, H, PESHEKHONOV D., V, PESHEKHONOV V., D, Piedigrossi, D, Piragino, G, Platchkov, S, Platzer, K, Pochodzalla, J, Polak, J, POLYAKOV V., A, Pontecorvo, G, POPOV A., A, Pretz, J, Procureur, S, Quintans, C, RAJOTTE J., F, Ramos, S, Razaq, I, Rebourgeard, P, Reggiani, D, Reicherz, G, Richter, A, Robinet, F, Rocco, E, Rondio, E, Ropelewski, L, ROUSSÉ J., Y, ROZHDESTVENSKY A., M, Ryabchikov, D, SAMARTSEV A., G, SAMOYLENKO V., D, Sandacz, A, SANS MERCE, M, Santos, H, SAPOZHNIKOV M., G, Sauli, F, SAVIN I., A, Schiavon, Paolo, Schill, C, Schmidt, T, Schmitt, H, Schmitt, L, Schönmeier, P, Schroeder, W, Seeharsch, D, Seimetz, M, Setter, D, Shaligin, A, SHEVCHENKO O., Yu, SHISHKIN A., A, SIEBERT H., W, Silva, L, Simon, F, Sinha, L, SISSAKIAN A., N, Slunecka, M, SMIRNOV G., I, Sora, D, Sosio, S, Sozzi, F, Srnka, A, Stinzing, F, Stolarski, M, SUGONYAEV V., P, Sulc, M, Sulej, R, Tarte, G, Takabayashi, N, TCHALISHEV V., V, Tessaro, S, Tessarotto, F, Teufel, A, Thers, D, TKATCHEV L., G, Toeda, T, TOKMENIN V., V, Trippel, S, Urban, J, Valbuena, R, Venugopal, G, Virius, M, VLASSOV N., V, Vossen, A, Wagner, M, Webb, R, Weise, E, Weitzel, Q, Wiedner, U, Wiesmann, M, Windmolders, R, Wirth, S, Wisblicki, W, Wollny, H, ZANETTI A., M, Zaremba, K, Zavertyaev, M, Zhao, J, Ziegler, R, Ziembicki, M, ZLOBIN Y., L, and Zvyagin, A.
Subjects: Nuclear and High Energy Physics, straw tube detector, Physics::Instrumentation and Detectors, Project commissioning, FOS: Physical sciences, fixed-target experiment, RICH detector, hadron structure, High Energy Physics - Experiment, target, MWPC, Nuclear physics, High Energy Physics - Experiment (hep-ex), Compass, Hadron spectroscopy, COMPASS experiment, scintillating fibre detector, Nuclear Experiment, silicon microstrip detectors, Instrumentation, Silicon microstrip detectors, Physics, Large Hadron Collider, Structure function, MicroMegas detector, front-end electronics, DAQ, micromegas detector, drift chamber, Physics::Accelerator Physics, High Energy Physics::Experiment, polarised, GEM detector, calorimetry, Particle Physics - Experiment, polarised DIS
Abstract: The COMPASS experiment makes use of the CERN SPS high-intensitymuon and hadron beams for the investigation of the nucleon spin structure and the spectroscopy of hadrons. One or more outgoing particles are detected in coincidence with the incoming muon or hadron. A large polarized target inside a superconducting solenoid is used for the measurements with the muon beam. Outgoing particles are detected by a two-stage, large angle and large momentum range spectrometer. The setup is built using several types of tracking detectors, according to the expected incident rate, required space resolution and the solid angle to be covered. Particle identification is achieved using a RICH counter and both hadron and electromagnetic calorimeters. The setup has been successfully operated from 2002 onwards using a muon beam. Data with a hadron beam were also collected in 2004. This article describes the main features and performances of the spectrometer in 2004; a short summary of the 2006 upgrade is also given., 84 papes, 74 figures
Published: 2007

18. Hadronization in semi-inclusive deep-inelastic scattering on nuclei

Author: P. Kravchenko, M. Stancari, R. Avakian, T. Hasegawa, E. Nappi, R. Perez-Benito, B. Marianski, C. Hadjidakis, Michael Tytgat, E. Cisbani, Frank Ellinghaus, Arne Vandenbroucke, H. Stenzel, Riccardo Fabbri, Y. Miyachi, E. R. Kinney, L. De Nardo, C. Shearer, B. Seitz, W.-D. Nowak, J.J.M. Steijger, E. C. Aschenauer, P. Lenisa, A. Kisselev, Stephen V. Gliske, X. R. Lu, G. Gapienko, G. Schnell, P. Zupranski, V. Gharibyan, A. Trzcinski, A. Brüll, P. B. van der Nat, H. Böttcher, A. Avetissian, G. Elbakian, P. Di Nezza, L. A. Linden-Levy, A. Rostomyan, J. Stewart, D. Gabbert, L. Rubacek, W. Yu, Klaus Rith, R. Lamb, I. Vilardi, H. E. Jackson, A.R. Reolon, C. Riedl, G. Rosner, Wouter Deconinck, A. Schäfer, Ralf Kaiser, M. Düren, Y. Naryshkin, Andreas Mussgiller, V. Muccifora, L. Lapikás, E. Avetissian, S. Taroian, P. E. Reimer, S. Yaschenko, V. Mexner, M. Hoek, S. Lu, W. Augustyniak, Morgan Murray, C. B. Van Hulse, Shan Wang, S. Frullani, B. Tchuiko, M. Kopytin, Z. Ye, S.E. Rock, Y. Ye, J. Dreschler, M. Varanda, A. Nass, B. Zihlmann, N. Pickert, G. Gavrilov, Y. Imazu, Z. Akopov, C. Bonomo, M. Statera, D. Veretennikov, T. Keri, F. Giordano, A. Airapetian, D. Zeiler, A. Ivanilov, N. Bianchi, C. Vogel, B. Hommez, B. Maiheu, T.-A. Shibata, V. Vikhrov, V. Gapienko, G. Ciullo, M. Demey, F. Stinzing, Y. Van Haarlem, J. Streit, H. P. Blok, L. L. Pappalardo, M. Contalbrigo, Wolfgang Lorenzon, I. Hristova, N. Akopov, Y. Salomatin, Martin Raithel, G. van der Steenhoven, L. Grigoryan, V. Korotkov, V. Shutov, L. Lagamba, Naomi C R Makins, V. Bryzgalov, M. Ehrenfried, R. De Leo, D. Hasch, F. Garibaldi, E. De Sanctis, M. Hartig, A. Fantoni, U. Elschenbroich, G. Hill, M. Negodaev, A. Reischl, G.P. Capitani, S. Yen, A. Hillenbrand, C.A. Miller, D. Reggiani, M. Diefenthaler, M. Capiluppi, P. Liebing, P.F. Dalpiaz, J. G. Rubin, I. Lehmann, D. Ryckbosch, H. Marukyan, A. Borissov, (Astro)-Particles Physics, and Student Lab and Education
Subjects: Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Hadron, chemistry.chemical_element, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, NO, High Energy Physics - Experiment, Nuclear physics, Neon, High Energy Physics - Experiment (hep-ex), Pion, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Physics::Atomic Physics, 010306 general physics, Nuclear Experiment, Physics, Mass number, 010308 nuclear & particles physics, Krypton, Deep inelastic scattering, Hadronization, chemistry, Deuterium, High Energy Physics::Experiment, Atomic physics
Abstract: A series of semi-inclusive deep-inelastic scattering measurements on deuterium, helium, neon, krypton, and xenon targets has been performed in order to study hadronization. The data were collected with the HERMES detector at the DESY laboratory using a 27.6 GeV positron or electron beam. Hadron multiplicities on nucleus A relative to those on the deuteron, R_A^h, are presented for various hadrons (\pi^+, \pi^-, \pi^0, K^+, K^-, p, and \bar{p}) as a function of the virtual-photon energy \nu, the fraction z of this energy transferred to the hadron, the photon virtuality Q^2, and the hadron transverse momentum squared p_t^2. The data reveal a systematic decrease of R_A^h with the mass number A for each hadron type h. Furthermore, R_A^h increases (decreases) with increasing values of \nu (z), increases slightly with increasing Q^2, and is almost independent of p_t^2, except at large values of p_t^2. For pions two-dimensional distributions also are presented. These indicate that the dependences of R_A^{\pi} on \nu and z can largely be described as a dependence on a single variable L_c, which is a combination of \nu and z. The dependence on L_c suggests in which kinematic conditions partonic and hadronic mechanisms may be dominant. The behaviour of R_A^{\pi} at large p_t^2 constitutes tentative evidence for a partonic energy-loss mechanism. The A-dependence of R_A^h is investigated as a function of \nu, z, and of L_c. It approximately follows an A^{\alpha} form with \alpha \approx 0.5 - 0.6., Comment: 33 pages, 12 figures
Published: 2007

19. Verification of the Neutron Mirror Capabilities in MCNPX via Gold Foil Measurements at the EIGER Instrument Beamline at the Swiss Spallation Neutron Source (SINQ)

Author: R. M. Bergmann U. Filges S. Forss E. Rantsiou D. Reggiani T. Reiss U. Stuhr V. Talanov M. Wo
Published: 2015

20. Hard exclusive electroproduction of π+π− pairs

Author: A. Airapetian, N. Akopov, Z. Akopov, M. Amarian, V.V. Ammosov, A. Andrus, E.C. Aschenauer, W. Augustyniak, R. Avakian, A. Avetissian, E. Avetissian, P. Bailey, D. Balin, V. Baturin, M. Beckmann, S. Belostotski, S. Bernreuther, N. Bianchi, H.P. Blok, H. Böttcher, A. Borissov, A. Borysenko, M. Bouwhuis, J. Brack, A. Brüll, V. Bryzgalov, G.P. Capitani, T. Chen, G. Ciullo, M. Contalbrigo, P.F. Dalpiaz, R. De Leo, M. Demey, L. De Nardo, E. De Sanctis, E. Devitsin, P. Di Nezza, M. Düren, M. Ehrenfried, A. Elalaoui-Moulay, G. Elbakian, F. Ellinghaus, U. Elschenbroich, R. Fabbri, A. Fantoni, A. Fechtchenko, L. Felawka, S. Frullani, G. Gapienko, V. Gapienko, F. Garibaldi, K. Garrow, E. Garutti, G. Gavrilov, V. Gharibyan, G. Graw, O. Grebeniouk, L.G. Greeniaus, I.M. Gregor, K.A. Griffioen, K. Hafidi, M. Hartig, D. Hasch, D. Heesbeen, M. Henoch, R. Hertenberger, W.H.A. Hesselink, A. Hillenbrand, M. Hoek, Y. Holler, B. Hommez, G. Iarygin, A. Ivanilov, A. Izotov, H.E. Jackson, A. Jgoun, R. Kaiser, E. Kinney, A. Kisselev, M. Kopytin, V. Korotkov, V. Kozlov, B. Krauss, V.G. Krivokhijine, L. Lagamba, L. Lapikás, A. Laziev, P. Lenisa, P. Liebing, L.A. Linden-Levy, K. Lipka, W. Lorenzon, H. Lu, J. Lu, S. Lu, B.-Q. Ma, B. Maiheu, N.C.R. Makins, Y. Mao, B. Marianski, H. Marukyan, F. Masoli, V. Mexner, N. Meyners, O. Mikloukho, C.A. Miller, Y. Miyachi, V. Muccifora, A. Nagaitsev, E. Nappi, Y. Naryshkin, A. Nass, M. Negodaev, W.-D. Nowak, K. Oganessyan, H. Ohsuga, A. Osborne, N. Pickert, S. Potashov, D.H. Potterveld, M. Raithel, D. Reggiani, P.E. Reimer, A. Reischl, A.R. Reolon, C. Riedl, K. Rith, G. Rosner, A. Rostomyan, L. Rubacek, J. Rubin, D. Ryckbosch, Y. Salomatin, I. Sanjiev, I. Savin, A. Schäfer, C. Schill, G. Schnell, K.P. Schüler, J. Seele, R. Seidl, B. Seitz, R. Shanidze, C. Shearer, T.-A. Shibata, V. Shutov, K. Sinram, W. Sommer, M. Stancari, M. Statera, E. Steffens, J.J.M. Steijger, H. Stenzel, J. Stewart, F. Stinzing, P. Tait, H. Tanaka, S. Taroian, B. Tchuiko, A. Terkulov, A. Tkabladze, A. Trzcinski, M. Tytgat, A. Vandenbroucke, P. van der Nat, G. van der Steenhoven, Y. van Haarlem, M.C. Vetterli, V. Vikhrov, M.G. Vincter, C. Vogel, M. Vogt, J. Volmer, C. Weiskopf, J. Wendland, J. Wilbert, G. Ybeles Smit, Y. Ye, Z. Ye, S. Yen, B. Zihlmann, and P. Zupranski
Subjects: Physics, HERMES experiment, Nuclear and High Energy Physics, Particle physics, Meson, Isovector, 010308 nuclear & particles physics, Isoscalar, Nuclear Theory, Parton, 01 natural sciences, Helicity, Nuclear physics, Pion, 0103 physical sciences, High Energy Physics::Experiment, Invariant mass, Nuclear Experiment, 010306 general physics
Abstract: Hard exclusive electroproduction of π + π − pairs off hydrogen and deuterium targets has been studied by the HERMES experiment at DESY. Legendre moments 〈 P 1 〉 and 〈 P 3 〉 of the angular distributions of π + mesons in the center-of-mass frame of the pair have been measured for the first time. Their dependence on the π + π − invariant mass can be understood as being due to the interference between relative P -wave (isovector) and S -, D -wave (isoscalar) states of the two pions. The increase in magnitude of 〈 P 1 〉 as Bjorken x increases is interpreted in the framework of generalized parton distributions as an enhancement of flavour non-singlet q q ¯ exchange for larger values of x , which leads to a sizable admixture of isoscalar and isovector pion pairs. In addition, the interference between P -wave and D -wave states separately for transverse and longitudinal pion pairs has been studied. The data indicate that in the f 2 ( 1270 ) region at 〈 Q 2 〉 = 3 GeV 2 higher-twist effects can be as large as the leading-twist longitudinal component.
Published: 2004

21. The storage cell of the polarized H/D internal gas target of the HERMES experiment at HERA

Author: P. Lenisa, G. Ciullo, M. Henoch, Ralf Hertenberger, T. Wise, G.R. Court, G. Graw, Klaus Rith, A. Nass, H. Kolster, C. Baumgarten, M. Stancari, J. Stewart, E. Garutti, D. Reggiani, E. Steffens, P. F. Dalpiaz, H. Marukyan, V. Carassiti, B. Braun, N. Koch, A. Golendukhin, and W. Haeberli
Subjects: HERMES experiment, Physics, Nuclear and High Energy Physics, Hydrogen, chemistry.chemical_element, HERA, Electron, Nuclear physics, chemistry, Deuterium, Storage cell, Area density, Atomic physics, Instrumentation, Order of magnitude
Abstract: The storage cell of the internal, longitudinally polarized, atomic gas target of the HERMES experiment is presented. The polarized atoms of hydrogen or deuterium are accumulated in an open-ended thin walled storage cell through which the circulating electron or positron beam of the HERA accelerator passes. The target areal density is 10 14 atoms=cm 2 ; two orders of magnitude larger than without the cell. The construction details of the cell are described and the cell’s performance during HERMES run of 1997–2000 is discussed. r 2002 Published by Elsevier Science B.V.
Published: 2003

22. Molecular flow and wall collision age distributions

Author: M. Henoch, B. Braun, Klaus Rith, H. Kolster, C. Baumgarten, P. Lenisa, G.R. Court, N. Koch, P. Ferretti, M. C. Simani, S.P. Pod'yachev, E. Steffens, T. Wise, W. Haeberli, Ralf Hertenberger, G. Ciullo, J. Stewart, G. Graw, A. Nass, and D. Reggiani
Subjects: 47.45.Dt Free molecular flows, 51.20.+d Viscosity, di usion, and thermal conductivity, 29.25.Pj Polarized and other targets, Diffusion equation, Materials science, Hydrogen, Monte Carlo method, chemistry.chemical_element, Plasma, Atomic and Molecular Physics, and Optics, Deuterium, Free molecular flow, Diffusion process, chemistry, Diffusion (business), Atomic physics
Abstract: The use of storage cells has become a standard technique for internal gas targets in conjunction with high energy storage rings. In case of spin-polarized hydrogen and deuterium gas targets the interaction of the injected atoms with the walls of the storage cell can lead to depolarization and recombination. Thus the number of wall collisions of the atoms in the target gas is important for modeling the processes of spin relaxation and recombination. It is shown in this article that the diffusion process of rarefied gases in long tubes or storage cells can be described with the help of the one-dimensional diffusion equation. Mathematical methods are presented that allow one to calculate collision age distributions (CAD) and their moments analytically. These methods provide a better understanding of the different aspects of diffusion than Monte Carlo calculations. Additionally it is shown that measurements of the atomic density or polarization of a gas sample taken from the center of the tube allow one to determine the possible range of the corresponding density weighted average values along the tube. The calculations are applied to the storage cell geometry of the HERMES internal polarized hydrogen and deuterium gas target.
Published: 2002

23. High Energy Electron Radiation Exposure Facility at PSI

Author: Wojtek Hajdas, L. Desorgher, K. Deiters, D. Reggiani, Th. Th. Rauber, M. Tulej, P. Wurz, M. Luethi, K. Wojczuk, and P. Kalaczynski
Subjects: Physics, Range (particle radiation), Muon, Proton, 520 Astronomy, Electron, Radiation, 620 Engineering, Nuclear physics, Physics::Accelerator Physics, Irradiation, Atomic physics, Nuclear Experiment, Beam (structure), Gaussian beam
Abstract: Paul Scherrer Institut hosts the Proton Irradiation Facility used for radiation effects studies and exposure tests in preparation of satellite missions for the European Space Agency. The facility al- lows for realistic simulation of the space proton spectra in the energy range from 6 MeV up to 230 MeV with exposure fluxes ranging from very low up to as high as 109 p/cm2/sec. Recently, ap- proved ESA mission to Jupiter—JUICE—also brought a need for tests with high energy electron beams. For this purpose, another facility was established in the PSI secondary beam area piM1. Secondary particles are produced on the thick carbon target hit by energetic proton beam. Dedi- cated beam optics enables selection of the particle charge and momentum and guides them to the tests area. Characterization of electron beams at various momenta was performed with respect to their intensity, profiles and contamination by pions and muons. Electron fluxes ranging from 1.5 × 103/cm2/s at 20 MeV/c to 2.3 × 106/cm2/s at 345 MeV/c with gaussian beam profiles with FWHM of about 4 cm were measured. Beam contamination with heavier particles becomes negligible for all momenta lower than 115 MeV/c. This allows for using them for components and shielding cha- racterization and detector calibration experiments. Several such experiments have been already performed utilizing available beam time of few weeks per year.
Published: 2014
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24. Plasma lipoproteins, tissue cholesterol overload, and skeletal muscle apolipoprotein A-I synthesis in the developing chick.

Author: P Tarugi, D Reggiani, E Ottaviani, S Ferrari, R Tiozzo, and S Calandra
Subjects: Biochemistry, QD415-436
Abstract: In the present study we investigated the changes of plasma lipids, lipoproteins, and tissue lipids that occur during the late embryonic life (5 days before hatching) and the postnatal period (0, 2, 7, 14, and 30 days after hatching) of the chick. The chick emerges from the egg with extreme hypercholesterolemia associated with a high level of cholesterol-rich VLDL + IDL. The density gradient profile of plasma lipoproteins showed that the concentrations of VLDL + IDL and LDL decreased during the first week of postnatal life, whereas HDL concentration increased sharply around hatching and remained stable afterwards. All plasma lipoprotein classes of the newborn chick (2 days from hatching) were enriched in cholesterol and cholesteryl esters; 2 weeks after hatching, the relative amount of cholesterol and cholesteryl esters decreased. In the newborn chick, plasma VLDL + IDL consisted of two populations of cholesteryl ester-rich lipoproteins: the main one (designated apoB-VLDL) contained apoB and no apoA-I; the other (designated apoA-I-VLDL) contained predominantly apoA-I. In the newborn chick there was an accumulation of free and esterified cholesterol in the liver and, to a lesser extent, in the skeletal muscle. These cholesterol deposits were depleted 2 to 7 days after hatching. The depletion in skeletal muscle was preceded by and associated with a striking increase in the synthesis of apoA-I in this tissue, as demonstrated by immunological methods and apoA-I mRNA measurements. In addition, apoA-I-containing HDL were secreted in vitro by explants of skeletal muscle of the newborn chick. The synthesis of apoA-I in the skeletal muscle decreased to the level found in the adult animal 1 week after hatching. It is likely that the rise of HDL and apoA-I in plasma observed 1-2 days after hatching reflects the production of apoA-I-containing HDL by skeletal muscle. We suggest that the cholesterol overload in skeletal muscle might stimulate the production of apoA-I which, in turn, would promote the removal of cholesterol from this tissue. The hypothesis that metabolic stimuli play a role in inducing apoA-I synthesis in skeletal muscle is supported by the observation that feeding the newborn chick a diet rich in proteins and lipids and free of carbohydrates delays the fall of apoA-I mRNA which normally occurs 1 week after hatching.
Published: 1989
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25. Observation of aJPC=1−+Exotic Resonance in Diffractive Dissociation of190 GeV/cπ−intoπ−π−π+

Author: M. G. Alekseev, V. Yu. Alexakhin, Yu. Alexandrov, G. D. Alexeev, A. Amoroso, A. Austregesilo, B. Badełek, F. Balestra, J. Ball, J. Barth, G. Baum, Y. Bedfer, J. Bernhard, R. Bertini, M. Bettinelli, R. Birsa, J. Bisplinghoff, P. Bordalo, F. Bradamante, A. Bravar, A. Bressan, G. Brona, E. Burtin, M. P. Bussa, A. Chapiro, M. Chiosso, S. U. Chung, A. Cicuttin, M. Colantoni, M. L. Crespo, S. Dalla Torre, T. Dafni, S. Das, S. S. Dasgupta, O. Yu. Denisov, L. Dhara, V. Diaz, A. M. Dinkelbach, S. V. Donskov, N. Doshita, V. Duic, W. Dünnweber, A. Efremov, A. El Alaoui, P. D. Eversheim, W. Eyrich, M. Faessler, A. Ferrero, M. Finger, H. Fischer, C. Franco, J. M. Friedrich, R. Garfagnini, F. Gautheron, O. P. Gavrichtchouk, R. Gazda, S. Gerassimov, R. Geyer, M. Giorgi, B. Gobbo, S. Goertz, S. Grabmüller, O. A. Grajek, A. Grasso, B. Grube, R. Gushterski, A. Guskov, F. Haas, D. von Harrach, T. Hasegawa, J. Heckmann, F. H. Heinsius, R. Hermann, F. Herrmann, C. Heß, F. Hinterberger, N. Horikawa, Ch. Höppner, N. d’Hose, C. Ilgner, S. Ishimoto, O. Ivanov, Yu. Ivanshin, T. Iwata, R. Jahn, P. Jasinski, G. Jegou, R. Joosten, E. Kabuß, D. Kang, B. Ketzer, G. V. Khaustov, Yu. A. Khokhlov, Yu. Kisselev, F. Klein, K. Klimaszewski, S. Koblitz, J. H. Koivuniemi, V. N. Kolosov, E. V. Komissarov, K. Kondo, K. Königsmann, R. Konopka, I. Konorov, V. F. Konstantinov, A. Korzenev, A. M. Kotzinian, O. Kouznetsov, K. Kowalik, M. Krämer, A. Kral, Z. V. Kroumchtein, R. Kuhn, F. Kunne, K. Kurek, L. Lauser, J. M. Le Goff, A. A. Lednev, A. Lehmann, S. Levorato, J. Lichtenstadt, T. Liska, A. Maggiora, M. Maggiora, A. Magnon, G. K. Mallot, A. Mann, C. Marchand, J. Marroncle, A. Martin, J. Marzec, F. Massmann, T. Matsuda, A. N. Maximov, W. Meyer, T. Michigami, Yu. V. Mikhailov, M. A. Moinester, A. Mutter, A. Nagaytsev, T. Nagel, J. Nassalski, T. Negrini, F. Nerling, S. Neubert, D. Neyret, V. I. Nikolaenko, A. G. Olshevsky, M. Ostrick, A. Padee, R. Panknin, D. Panzieri, B. Parsamyan, S. Paul, B. Pawlukiewicz-Kaminska, E. Perevalova, G. Pesaro, D. V. Peshekhonov, G. Piragino, S. Platchkov, J. Pochodzalla, J. Polak, V. A. Polyakov, G. Pontecorvo, J. Pretz, C. Quintans, J.-F. Rajotte, S. Ramos, V. Rapatsky, G. Reicherz, D. Reggiani, A. Richter, F. Robinet, E. Rocco, E. Rondio, D. I. Ryabchikov, V. D. Samoylenko, A. Sandacz, H. Santos, M. G. Sapozhnikov, S. Sarkar, I. A. Savin, G. Sbrizzai, P. Schiavon, C. Schill, T. Schlüter, L. Schmitt, S. Schopferer, W. Schröder, O. Yu. Shevchenko, H.-W. Siebert, L. Silva, L. Sinha, A. N. Sissakian, M. Slunecka, G. I. Smirnov, S. Sosio, F. Sozzi, A. Srnka, M. Stolarski, M. Sulc, R. Sulej, S. Takekawa, S. Tessaro, F. Tessarotto, A. Teufel, L. G. Tkatchev, S. Uhl, I. Uman, G. Venugopal, M. Virius, N. V. Vlassov, A. Vossen, Q. Weitzel, R. Windmolders, W. Wiślicki, H. Wollny, K. Zaremba, M. Zavertyaev, E. Zemlyanichkina, M. Ziembicki, J. Zhao, N. Zhuravlev, and A. Zvyagin
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Partial wave analysis, General Physics and Astronomy, Resonance, Parity (physics), Quantum number, 01 natural sciences, Dissociation (chemistry), Nuclear physics, Pion, 0103 physical sciences, Pi, COMPASS experiment, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: The COMPASS experiment at the CERN SPS has studied the diffractive dissociation of negative pions into the pi- pi- pi+ final state using a 190 GeV/c pion beam hitting a lead target. A partial wave analysis has been performed on a sample of 420000 events taken at values of the squared 4-momentum transfer t' between 0.1 and 1 GeV^2/c^2. The well-known resonances a1(1260), a2(1320), and pi2(1670) are clearly observed. In addition, the data show a significant natural parity exchange production of a resonance with spin-exotic quantum numbers J^PC = 1-+ at 1.66 GeV/c^2 decaying to rho pi. The resonant nature of this wave is evident from the mass-dependent phase differences to the J^PC = 2-+ and 1++ waves. From a mass-dependent fit a resonance mass of 1660 +- 10+0-64 MeV/c^2 and a width of 269+-21+42-64 MeV/c^2 is deduced.
Published: 2010

26. Flavour Separation of Helicity Distributions from Deep Inelastic Muon-Deuteron Scattering

Author: K. Zaremba, Soumen Paul, V.A. Polyakov, R. Kuhn, G. Sbrizzai, A. Amoroso, W. Kafer, M. Virius, R. Panknin, I.A. Savin, F. Haas, M. L. Colantoni, R. Geyer, A. Grasso, R. Gazda, T. Nagel, J. Pretz, A. Bravar, S. Sosio, S. Takekawa, C. Franco, S.-U. Chung, A. Srnka, T. Michigami, D. Neyret, K. Kondo, N.V. Vlassov, François Herrmann, W. Wislicki, Jean-Francois Rajotte, D.I. Ryabchikov, O.P. Gavrichtchouk, Günter Baum, O.Yu. Shevchenko, R. Hermann, A. Mutter, L. Sinha, A. Sandacz, S. Levorato, P. Schiavon, D. Panzieri, Laura Silva, Y. Bedfer, T. Liška, T. Matsuda, E.-M. Kabuss, A. Korzenev, Yu.V. Mikhailov, M. Slunecka, Sayantan Sarkar, V.I. Nikolaenko, A. Zvyagin, H. Santos, D. Reggiani, Yu. Kisselev, R. Birsa, Norihiro Doshita, N. d'Hose, A. Chapiro, M. Ziembicki, J. Marzec, St. Goertz, A. N. Sissakian, A.V. Efremov, W. Eyrich, J. Kiefer, Moinester, R. Garfagnini, M. Finger, A. Nagaytsev, F. Balestra, G. Piragino, G. D. Alexeev, W. Dünnweber, Takahiro Iwata, M. Alekseev, I. Konorov, M. Ostrick, E. Perevalova, F. Tessarotto, M. Krämer, O.A. Grajek, G. Jegou, C. Hess, M. Giorgi, M.G. Sapozhnikov, S. Negrini, A. Austregesilo, Yu. Alexandrov, Oleg V. Ivanov, H. Wollny, K. Kowalik, C. Quintans, D.V. Peshekhonov, F.H. Heinsius, G.B. Pontecorvo, A. M. Kotzinian, G.I. Smirnov, J. Marroncle, Bakur Parsamyan, R. Joosten, Fabrice Gautheron, M. A. Faessler, G. Pesaro, L. G. Tkatchev, S. Neubert, V.Yu. Alexakhin, M. Stolarski, Anne-Laure Martin, R. Bertini, S. Das, R. Sulej, L. Schmitt, O.Yu. Denisov, R. Jahn, A. Ferrero, Franco Bradamante, E.V. Komissarov, A.M. Dinkelbach, F. Kunne, P.D. Eversheim, P. Bordalo, J. Nassalski, A.A. Lednev, Miroslav Sulc, F. Hinterberger, E. Burtin, V.F. Konstantinov, J. Ball, A. Mann, Q. Weitzel, F. Nerling, B. Grube, H. Fischer, H.-W. Siebert, K. Wenzl, S. Ishimoto, Frank Klein, Johannes Bernhard, A. Guskov, M. Bettinelli, S. Platchkov, Andrea Bressan, Yu. Ivanshin, L. Dhara, B. Badelek, B. Ketzer, F. Robinet, J.M. Friedrich, J. Bisplinghoff, E. Zemlyanichkina, D. von Harrach, G.V. Khaustov, W. Meyer, Maria Liz Crespo, C. Ilgner, Z.V. Kroumchtein, A. Maximov, V.D. Samoylenko, Elena Rocco, A.G. Olshevsky, J. Zhao, A. Magnon, J. Polak, J.H. Koivuniemi, B. Gobbo, W. Schröder, N. I. Zhuravlev, R. Konopka, A. Teufel, B. Pawlukiewicz-Kaminska, V. Rapatsky, S.S. Dasgupta, V.N. Kolosov, R. Hagemann, Christian Schill, M. Chiosso, T. Dafni, K. Kurek, A. Padee, A. Král, R. Windmolders, T. Hasegawa, E. Rondio, M.P. Bussa, O.M. Kouznetsov, P. Jasinski, J. Barth, J. M. Le Goff, Grzegorz Brona, Gerhard K. Mallot, A. Vossen, F. Sozzi, D. Kang, V. Duic, A. El Alaoui, S. Gerassimov, N. Horikawa, K. Königsmann, Sergey Donskov, S. Koblitz, S. Tessaro, Yu.A. Khokhlov, Ch. Höppner, A. Maggiora, Achim Richter, F. Massmann, S. Ramos, M. V. Zavertyaev, G. Venugopal, C. Marchand, A. Lehmann, V. Diaz, K. Klimaszewski, M. Maggiora, Andres Cicuttin, G. Reicherz, S. Dalla Torre, S. Grabmüller, R. Gushterski, J. Heckmann, J. Pochodzalla, J. Lichtenstadt, Alekseev, M., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, A., Austregesilo, A., Badelek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernhard, J., Bertini, R., Bettinelli, M., Birsa, Renato, Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Bravar, A., Bressan, Andrea, Brona, G., Burtin, E., Bussa, M. P., Chapiro, A., Chiosso, M., Chung, S. U., Cicuttin, A., Colantoni, M., Crespo, M. L., DALLA TORRE, Silvia, Dafni, T., Das, S., Dasgupta, S. S., Denisov, O. Y., Dhara, L., Diaz, V., Dinkelbach, A. M., Donskov, S. V., Doshita, N., Duic, Venicio, Dunnweber, W., Efremov, A., El Alaoui, A., Eversheim, P. D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., Friedrich, J. M., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. P., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, Marcello, Gobbo, B., Goertz, S., Grabmuller, S., Grajek, O. A., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Haas, F., Hagemann, R., von Harrach, D., Hasegawa, T., Heckmann, J., Heinsius, F. H., Hermann, R., Herrmann, F., Hess, C., Hinterberger, F., Horikawa, N., Hoppner, C., D'Hose, N., Ilgner, C., Ishimoto, S., Ivanov, O., Ivanshin, Y., Iwata, T., Jahn, R., Jasinski, P., Jegou, G., Joosten, R., Kabuss, E., Kafer, W., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kiefer, J., Kisselev, Y., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Komissarov, E. V., Kondo, K., Konigsmann, K., Konopka, R., Konorov, I., Konstantinov, V. F., Korzenev, A., Kotzinian, A. M., Kouznetsov, O., Kowalik, K., Kramer, M., Kral, A., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, Stefano, Lichtenstadt, J., Liska, T., Maggiora, A., Maggiora, M., Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Marroncle, J., Martin, Anna, Marzec, J., Massmann, F., Matsuda, T., Maximov, A. N., Meyer, W., Michigami, T., Mikhailov, Y. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nassalski, J., Negrini, S., Nerling, F., Neubert, S., Neyret, D., Nikolaenko, V. I., Olshevsky, A. G., Ostrick, M., Padee, A., Panknin, R., Panzieri, D., Parsamyan, B., Paul, S., Pawlukiewicz Kaminska, B., Perevalova, E., Pesaro, Giulia, Peshekhonov, D. V., Piragino, G., Platchkov, S., Pochodzalla, J., Polakl, J., Polyakov, V. A., Pontecorvo, G., Pretz, J., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Reggiani, D., Richter, A., Robinet, F., Rocco, E., Rondio, E., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schmitt, L., Schroder, W., Shevchenko, O. Y., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, Federica, Srnka, A., Stolarski, M., Sulc, M., Sulej, R., Takekawa, Stefano, Tessaro, Susanna, Tessarotto, F., Teufel, A., Tkatchev, L. G., Venugopal, G., Virius, M., Viassov, N. V., Vossen, A., Weitzel, Q., Wenzl, K., Windmolders, R., Wislicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Ziembicki, M., Zhao, J., Zhuravlev, N., and Zvyagin, A.
Subjects: Strange quark, POLARIZED TARGET, Nuclear Theory, VALENCE QUARK DISTRIBUTION, PARTON DISTRIBUTIONS, NUCLEON, PROTON, DIS, Polarised DIS and SIDIS, 01 natural sciences, COMPASS, Parton distribution function, High Energy Physics - Experiment, double-spin asymmetry, helicity density, parton distribution function, flavour sep- aration analysis, polarised DIS and SIDIS reactions, charged kaon asymmetry, polarised DIS and SIDIS reaction, High Energy Physics - Experiment (hep-ex), Helicity density, Nuclear Experiment, media_common, Quantum chromodynamics, Physics, Flavour separation analysis, Helicity, Charged kaon asymmetry, Nucleon, Particle Physics - Experiment, Particle physics, Nuclear and High Energy Physics, reactions, media_common.quotation_subject, FOS: Physical sciences, Asymmetry, Nuclear physics, 0103 physical sciences, flavour sep- aration analysi, Polarised DIS and SIDIS reactions, 010306 general physics, function, Muon, Valence (chemistry), 010308 nuclear & particles physics, Scattering, Parton distribution, High Energy Physics::Experiment, Double-spin asymmetry
Abstract: We present a LO evaluation of helicity densities of valence, \Delta u_v+\Delta d_v, non-strange sea, \Delta\bar{u}+\Delta\bar{d}, and strange quarks, \Delta s (assumed to be equal to \Delta\bar{s}). They have been obtained from the inclusive asymmetry A_{3,d} and the semi-inclusive asymmetries A^{\pi+}_{1,d}, A^{\pi-}_{1,d}, A^{K+}_{1,d}, A^{K-}_{1,d} measured in polarised deep inelastic muon-deuteron scattering. The full deuteron statistics of COMPASS (years 2002-2004 and 2006) has been used. The data cover the range Q^2 > 1 (GeV/c)^2 and 0.004, Comment: 15 pages, 8 figures
Published: 2009

27. Collins and Sivers asymmetries for pions and kaons in muon-deuteron DIS

Author: N. Dedek, Vladimir Peshekhonov, O.P. Gavrichtchouk, R. Birsa, J. Lichtenstadt, R. C. Webb, K. Zaremba, Colin Bernet, A. Srnka, L. Sinha, R. Ziegler, R. Bertini, V.A. Polyakov, D. Kang, K. Königsmann, Andrej Arbuzov, G. Sbrizzai, M. Slunecka, V. Diaz, K. Klimaszewski, Norihiro Doshita, N.P. Kravchuk, W. Wiślicki, A. Amoroso, A.I. Ioukaev, B. Gobbo, S. Gerassimov, N. d'Hose, Massimo Lamanna, Yu. Kisselev, G. Piragino, L. Dhara, C. Ilgner, N. Horikawa, A.M. Dinkelbach, M. Chiosso, W. Schröder, V.P. Sugonyaev, Yu.V. Mikhailov, A. N. Sissakian, Andres Cicuttin, B. Badelek, I. Konorov, Sergey Donskov, T. Iwata, A. Teufel, Yu. Alexandrov, T. Dafni, M. Ostrick, M. Giorgi, A. Maggiora, F. Tessarotto, C. Quintans, G. Reicherz, Jean-Francois Rajotte, B. Ketzer, F. Robinet, S. Paul, S. Tessaro, N.V. Vlassov, K. Kurek, A. Padee, M. von Hodenberg, W. Eyrich, D.I. Ryabchikov, S. Dalla Torre, Günter Baum, O.Yu. Shevchenko, S. Levorato, M. Alekseev, O.Yu. Denisov, F. Kunne, F.H. Heinsius, A.G. Olshevsky, Achim Richter, Z.V. Kroumchtein, A.M. Rozhdestvensky, R. Panknin, E.V. Komissarov, F. Massmann, T. Nagel, J. Pretz, D. Panzieri, S. Ramos, L. Ferrero, A. Magnon, A. Bravar, M.E. Ladygin, S. Sosio, A. Guskov, S. Grabmüller, A. Korzenev, Anne-Laure Martin, N.A. Koutchinski, M.G. Sapozhnikov, T. Matsuda, S. Procureur, G. Venugopal, T. Liška, V.I. Nikolaenko, Yu.A. Khokhlov, H. W. Siebert, C. Heß, D.V. Peshekhonov, M. Bettinelli, L. Schmitt, R. Hermann, E. Rondio, J. Heckmann, Miroslav Sulc, F. Hinterberger, A.V. Efremov, M. Stolarski, Andrea Bressan, C. Franco, A. Janata, A. Grasso, E. M. Kabuß, J. Polak, V.N. Kolosov, A. Sandacz, R. Joosten, R. Garfagnini, J. Nassalski, V.V. Tchalishev, S. Costa, M. Finger, Aram Kotzinian, A. Král, M.P. Bussa, O.M. Kouznetsov, G. Pesaro, P. Schönmeier, Franco Bradamante, R. Windmolders, J.M. Friedrich, J.H. Koivuniemi, E. Burtin, J. Marroncle, K. Kondo, V.F. Konstantinov, Q. Weitzel, J. Pochodzalla, Christian Schill, J. Bisplinghoff, I.A. Savin, Oleg V. Ivanov, H. Wollny, S. Panebianco, D. Reggiani, A. Lehmann, R. De Masi, P. Bordalo, Laura Silva, Y. Bedfer, B. Pawlukiewicz-Kaminska, M. L. Colantoni, P.D. Eversheim, J. M. Le Goff, V. Rapatsky, V.A. Dorofeev, E. Zemlyanichkina, Paolo Pagano, H. Fischer, S. Wirth, J. Ball, V. Duic, P. Schiavon, J. Hannappel, R. Gazda, M. V. Zavertyaev, A. Nagaytsev, K. Nikolaev, F. Balestra, P. Jasinski, J. Zhao, T. Hasegawa, V. Falaleev, V. Frolov, S.S. Dasgupta, A. Mann, A. Chapiro, S. Koblitz, D. Neyret, C. Marchand, Murray Moinester, A. Mutter, L. G. Tkatchev, F. Stinzing, R. Gushterski, J. Barth, A.S. Korentchenko, J. Marzec, St. Goertz, J. Franz, M. Virius, R. Kuhn, S. Neubert, Grzegorz Brona, Gerhard K. Mallot, E. Weise, O. Nähle, A. Vossen, F. Sozzi, S. Neliba, F. Haas, R. Geyer, G. D. Alexeev, W. Dünnweber, G.I. Smirnov, Fabrice Gautheron, M. A. Faessler, V.Yu. Alexakhin, R. Sulej, A. Mielech, S. Ishimoto, Frank Klein, S. Platchkov, M. Maggiora, Yu. Ivanshin, A. Gorin, O.A. Grajek, Sarit K. Das, B. Grube, S. Sarkar, D. von Harrach, A. Maximov, V.D. Samoylenko, Elena Rocco, G.V. Khaustov, N.I. Jouravlev, S. Horikawa, W. Meyer, Maria Liz Crespo, A. Zvyagin, H. Santos, R. Jahn, A. Ferrero, A.A. Lednev, I. Ludwig, F. Nerling, S. Hedicke, Alelseev, M., Alexakhin, V. Y., Alexandrov, Y., Alexeev, G. D., Amoroso, A., Arbuzov, A., Badelek, B., Balestra, F., Ball, J., Barth, J., Baum, G., Bedfer, Y., Bernet, C., Bertini, R., Bettinelli, M., Birsa, R., Bisplinghoff, J., Bordalo, P., Bradamante, Franco, Bravar, A., Bressan, Andrea, Brona, G., Burtin, E., Bussa, M. P., Chapiro, A., Chiosso, M., Cicuttin, A., Colantoni, M., Costa, S., Crespo, M. L., Torre, S. D., Dafni, T., Das, S., Dasgupta, S. S., De Masi, R., Dedek, N., Denisov, O. Y., Dhara, L., Diaz, V., Dinkelbach, A. M., Donskov, S. V., Dorofeev, V. A., Doshita, N., Duic, Venicio, Dunnweber, W., Efremov, A. V., Eversheim, P. D., Eyrich, W., Faessler, M., Falaleev, V., Ferrero, A., Ferrero, L., Finger, M., Fischer, H., Franco, C., Franz, J., Friedrich, J. M., Frolov, V., Garfagnini, R., Gautheron, F., Gavrichtchouk, O. R., Gazda, R., Gerassimov, S., Geyer, R., Giorgi, Marcello, Gobbo, B., Goertz, S., Gorin, A. M., Grabmuller, S., Grajek, O. A., Grasso, A., Grube, B., Gushterski, R., Guskov, A., Haas, F., Hannappel, J., von Harrach, D., Hasegawa, T., Heckmann, J., Hedicke, S., Heinsius, F. H., Hermann, R., Hess, C., Hinterberger, F., von Hodenberg, M., Horikawa, N., Horikawa, S., D'Hose, N., Ilgner, C., Loukaev, A. I., Ishimoto, S., Ivanov, O., Ivanshin, Y., Iwata, T., Jahn, R., Janata, A., Jasinski, P., Jouravlev, N. I., Kabuss, E., Kang, D., Ketzer, B., Khaustov, G. V., Khokhlov, Y. A., Kisselev, Y., Klein, F., Klimaszewski, K., Koblitz, S., Koivuniemi, J. H., Kolosov, V. N., Komissarov, E. V., Kondo, K., Konigsmann, K., Konorov, I., Konstantinov, V. F., Korentchenko, A. S., Korzenev, A., Kotzinian, A. M., Koutchinski, N. A., Kouznetsov, O., Kral, A., Kravchuk, N. P., Kroumchtein, Z. V., Kuhn, R., Kunne, F., Kurek, K., Ladygin, M. E., Lamanna, M., Le Goff, J. M., Lednev, A. A., Lehmann, A., Levorato, Stefano, Lichtenstadt, J., Liska, T., Ludwig, I., Maggiora, A., Maggiora, M., Magnon, A., Mallot, G. K., Mann, A., Marchand, C., Marroncle, J., Martin, Anna, Marzec, J., Massmann, F., Matsuda, T., Maximov, A. N., Meyer, W., Mielech, A., Mikhailov, Y. V., Moinester, M. A., Mutter, A., Nagaytsev, A., Nagel, T., Nahle, O., Nassalski, J., Neliba, S., Nerling, F., Neubert, S., Neyret, D. P., Nikolaenko, V. I., Nikolaev, K., Olshevsky, A. G., Ostrick, M., Padee, A., Pagano, P., Panebianco, S., Panknin, R., Panzieri, D., Paul, S., Pawlukiewicz Kaminska, B., Pesaro, Giulia, Peshekhonov, D. V., Peshekhonov, V. D., Piragino, G., Platchkov, S., Pochodzalla, J., Polak, J., Polyakov, V. A., Pretz, J., Procureur, S., Quintans, C., Rajotte, J. F., Ramos, S., Rapatsky, V., Reicherz, G., Reggiani, D., Richter, A., Robinet, F., Rocco, E., Rondio, E., Rozhdestvensky, A. M., Ryabchikov, D. I., Samoylenko, V. D., Sandacz, A., Santos, H., Sapozhnikov, M. G., Sarkar, S., Savin, I. A., Sbrizzai, Giulio, Schiavon, Paolo, Schill, C., Schmitt, L., Schonmeier, P., Schroder, W., Shevchenko, O. Y., Siebert, H. W., Silva, L., Sinha, L., Sissakian, A. N., Slunecka, M., Smirnov, G. I., Sosio, S., Sozzi, Federica, Srnka, A., Stinzing, F., Stolarski, M., Sugonyaev, V. P., Sulc, M., Sulej, R., Tchalishev, V. V., Tessaro, S., Tessarotto, F., Teufel, A., Tkatchev, L. G., Venugopal, G., Virius, M., Vlassov, N. V., Vossen, A., Webb, R., Weise, E., Weitzel, Q., Windmolders, R., Wirth, S., Wislicki, W., Wollny, H., Zaremba, K., Zavertyaev, M., Zemlyanichkina, E., Zhao, J., Ziegler, R., and Zvyagin, A.
Subjects: Quark, Nuclear and High Energy Physics, Particle physics, Sivers asymmetry, Hadron, Nuclear Theory, FOS: Physical sciences, 01 natural sciences, COMPASS, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, Identified, Compass, 0103 physical sciences, Transverse spin effects, Deuteron, Collins asymmetry, Transverse spin effect, 010306 general physics, Nuclear Experiment, Physics, Muon, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Transverse single-spin asymmetry, hadrons, Deuterium, Transversity, High Energy Physics::Experiment
Abstract: The measurements of the Collins and Sivers asymmetries of identified hadrons produced in deep-inelastic scattering of 160 GeV/c muons on a transversely polarised 6LiD target at COMPASS are presented. The results for charged pions and charged and neutral kaons correspond to all data available, which were collected from 2002 to 2004. For all final state particles both the Collins and Sivers asymmetries turn out to be small, compatible with zero within the statistical errors, in line with the previously published results for not identified charged hadrons, and with the expected cancellation between the u- and d-quark contributions., Comment: 16 pages, 9 figures, added author Efremov, calculated pure kaon asymmetries instead of those for experimental kaon/pion mixture (mainly error affected)
Published: 2009

28. Transverse polarization ofΛandΛ¯hyperons in quasireal photoproduction

Author: I. Brunn, A. Kisselev, J. Wilbert, W. Augustyniak, Alessandra Fantoni, G. Graw, B. D. Fox, B. Zihlmann, M. Stancari, V. Mexner, B. Tchuiko, M. Kopytin, A. Nass, G. Schnell, O. Grebeniouk, A. Nagaitsev, B. Hommez, P. E. Reimer, P. Lenisa, J. Seibert, A. Trzcinski, Michel Vetterli, M. Henoch, E. Thomas, A. Laziev, M. Vogt, D. Reggiani, N. Akopov, B. Seitz, S. Tessarin, P. B. van der Nat, Katerina Lipka, K. Oganessyan, G. Iarygin, F. Masoli, J. Visser, A. Jgoun, V. A. Gapienko, G. M. Urciuoli, H. Kolster, Dirk Ryckbosch, M. Amarian, V. Vikhrov, Adel Terkulov, R. Van de Vyver, S. Belostotski, Manuella Vincter, H. Marukyan, Hidekazu Tanaka, M. Statera, Rezo Shanidze, J. Franz, Salvatore Frullani, Y. Gärber, J. Stewart, L. G. Greeniaus, V. A. Korotkov, A. Brüll, F. Menden, P. F. Dalpiaz, V. V. Ammosov, S. Yen, H. E. Jackson, A. Tkabladze, V. G. Krivokhijine, Andrey V. Izotov, C. Weiskopf, Ralf Kaiser, H. P. Blok, H. C. Chiang, C. Baumgarten, Ralf Hertenberger, S. Yoneyama, C. A. Miller, Valeria Muccifora, E. Steffens, G. Gavrilov, B. Krauss, C. Scarlett, Wolfgang Lorenzon, J. Ely, K. Königsmann, V. Baturin, V. A. Kozlov, M. Ehrenfried, S. Potashov, E. De Sanctis, Franco Garibaldi, H. Zohrabian, W.H.A. Hesselink, R. De Leo, A. Fechtchenko, D. Veretennikov, G. Elbakian, Erika Garutti, S. Bernreuther, M. Bouwhuis, A. Airapetian, H. Böttcher, Michael Tytgat, A. Andrus, S. Taroian, A. Elalaoui-Moulay, Frank Ellinghaus, A. Borissov, P. Di Nezza, P. Liebing, E. R. Kinney, M. Contalbrigo, A. Schwind, Martin Raithel, E. C. Aschenauer, Y. Naryshkin, L. Felawka, V. Shutov, U. Elschenbroich, I. Sanjiev, G. Orlandi, K. P. Schüler, Naomi C R Makins, D. Gaskell, A. Hillenbrand, G. P. Capitani, E. Avetissian, Nicola Bianchi, O. Mikloukho, P. Bailey, U. Stosslein, L. Lagamba, Z. Akopov, Y. Miyachi, P. Zupranski, J. Wendland, D. Hasch, D. H. Potterveld, R. Fabbri, T. A. Shibata, G. Gapienko, R.O. Avakian, N. Meyners, G. Rosner, E. Devitsin, K. Sinram, H. Ohsuga, L. De Nardo, V. Gharibyan, A. Rostomyan, A. R. Reolon, A. Avetissian, J. Volmer, J. J. M. Steijger, Michael Düren, K. Hafidi, Y. Holler, M. C. Simani, A. Reischl, G. Ciullo, Christian Schill, Eugenio Nappi, M. Hartig, T. Wise, M. Beckmann, L. Lapikás, Jeffrey Brack, W. Haeberli, Klaus Rith, D. Heesbeen, G. van der Steenhoven, T. Lindemann, I.A. Savin, G.R. Court, Andreas Schäfer, and W.-D. Nowak
Subjects: Physics, HERMES experiment, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Hyperon, Lambda, Lambda baryon, Polarization (waves), 01 natural sciences, Particle identification, Nuclear physics, Transverse plane, Light cone, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract: The HERMES experiment has measured the transverse polarization of Lambda and {ovr Lambda} hyperons produced inclusively in quasireal photoproduction at a positron beam energy of 27.6 GeV. The transverse polarization P{sub n}{sup Lambda} of the Lambda hyperon is found to be positive while the observed {ovr Lambda} polarization is compatible with zero. The values averaged over the kinematic acceptance of HERMES are P{sub n}{sup Lambda} =0.078 {+-} 0.006(stat) {+-} 0.012(syst) and P{sub n}{sup {ovr Lambda}} = -0.025 {+-} 0.015(stat) {+-} 0.018(syst) for Lambda and {ovr Lambda}, respectively. The dependences of P{sub n}{sup Lambda} and P{sub n}{sup {ovr Lambda}} on the fraction zeta of the beam's light-cone momentum carried by the hyperon and on the hyperon's transverse momentum p{sub T} were investigated. The measured Lambda polarization rises linearly with p{sub T} and exhibits a different behavior for low and high values of zeta, which approximately correspond to the backward and forward regions in the center-of-mass frame of the gamma*N reaction.
Published: 2007

29. The Polarised Valence Quark Distribution from semi-inclusive DIS

Author: A. Padee, Yu. Alexandrov, Norihiro Doshita, P. Schiavon, N. d'Hose, Laura Silva, Sayantan Sarkar, A. N. Sissakian, A. Bravar, A. Chapiro, S. Sosio, V. Diaz, K. Klimaszewski, M. Maggiora, G. D. Alexeev, W. Dünnweber, A. Zvyagin, Soumen Paul, H. Santos, F. Tessarotto, M. Chiosso, Andres Cicuttin, R. Kuhn, S. Dasgupta, J. Polak, D. Kang, K. Königsmann, C. Franco, V.N. Kolosov, C. Ilgner, J. Nassalski, O. Nähle, J. Zhao, G. Reicherz, S. Dalla Torre, M.G. Sapozhnikov, V.A. Dorofeev, Christian Schill, T. Nagel, J. Pretz, L. Ferrero, Jean-Francois Rajotte, R. Gazda, Massimo Lamanna, Yu. Kisselev, C. Quintans, D.I. Ryabchikov, Colin Bernet, A. Srnka, T. Hasegawa, O.P. Gavrichtchouk, D.V. Peshekhonov, M. Stolarski, G.V. Khaustov, A. Maggiora, J. Franz, S. Das, A.S. Korentchenko, D. Panzieri, G.I. Smirnov, Fabrice Gautheron, L. Sinha, M. Ostrick, M. A. Faessler, Andrej Arbuzov, S. Procureur, T. Liška, O.A. Grajek, R. Jahn, A. Ferrero, Achim Richter, F. Massmann, S. Ramos, N.I. Jouravlev, S. Horikawa, V.Yu. Alexakhin, W. Meyer, Maria Liz Crespo, D. Neyret, A. Sandacz, L. Dhara, B. Badelek, T. Dafni, A. Mutter, K. Kurek, A. Guskov, M. Bettinelli, N.V. Vlassov, V.P. Sugonyaev, T. Matsuda, G. Venugopal, S. Koblitz, R. Sulej, O.Yu. Denisov, F. Kunne, A.A. Lednev, K. Zaremba, Günter Baum, O.Yu. Shevchenko, S. Levorato, Andrea Bressan, Franco Bradamante, I. Ludwig, G. Piragino, V.A. Polyakov, J. Marzec, B. Ketzer, S. Grabmüller, F. Robinet, L. G. Tkatchev, A.M. Rozhdestvensky, Z.V. Kroumchtein, E.V. Komissarov, F. Nerling, A. Maximov, J. Heckmann, M. Giorgi, R. Panknin, A. Lehmann, St. Goertz, V.I. Nikolaenko, A. Amoroso, V.D. Samoylenko, Elena Rocco, J. Ball, S. Hedicke, J.M. Friedrich, L. Schmitt, E. M. Kabuß, A. Mann, R. Garfagnini, J. Pochodzalla, A.I. Ioukaev, M. Finger, J. Bisplinghoff, F. Stinzing, R. Gushterski, Yu.V. Mikhailov, R. De Masi, P. Bordalo, Alan D. Martin, I.A. Savin, A. Janata, A. Grasso, M. L. Colantoni, Oleg V. Ivanov, H. Wollny, M. V. Zavertyaev, E. Zemlyanichkina, Paolo Pagano, Takahiro Iwata, E. Rondio, D. von Harrach, P. Schönmeier, M. Slunecka, V. Falaleev, C. Heß, E. Burtin, C. Marchand, V.F. Konstantinov, J. Marroncle, O.M. Kouznetsov, N. Dedek, W. Wiślicki, Murray Moinester, Q. Weitzel, J. M. Le Goff, S. Neubert, S. Wirth, J. Hannappel, V. Duic, B. Gobbo, Miroslav Sulc, F. Hinterberger, M. Virius, Vladimir Peshekhonov, R. Birsa, E. Weise, W. Schröder, J. Lichtenstadt, H. Fischer, B. Grube, P.D. Eversheim, V. Frolov, R. C. Webb, A. Teufel, A. Mielech, S. Ishimoto, Frank Klein, M.E. Ladygin, S. Platchkov, N.A. Koutchinski, R. Hermann, Yu. Ivanshin, A. Gorin, S. Gerassimov, N. Horikawa, Sergey Donskov, S. Tessaro, Yu.A. Khokhlov, H. W. Siebert, J. Barth, Grzegorz Brona, Gerhard K. Mallot, A. Vossen, F. Sozzi, Aram Kotzinian, A. Král, R. Windmolders, K. Nikolaev, P. Jasinski, V.V. Tchalishev, S. Costa, J.H. Koivuniemi, S. Panebianco, B. Pawlukiewicz-Kaminska, V. Rapatsky, F.H. Heinsius, A.G. Olshevsky, A. Magnon, I. Konorov, A. Korzenev, D. Reggiani, A. Nagaytsev, F. Balestra, S. Neliba, F. Haas, R. Geyer, N.P. Kravchuk, W. Eyrich, R. Bertini, A.M. Dinkelbach, M. von Hodenberg, K. Kondo, Maria Pia Bussa, Y. Bedfer, M. Alekseev, R. Joosten, R. Ziegler, Alekseev, M, ALEXAKHIN V., Yu, Alexandrov, Yu, ALEXEEV G., D, Amoroso, A, Arbuzov, A, Badelek, B, Balestra, F, Ball, J, Barth, J, Baum, G, Bedfer, Y, Bernet, C, Bertini, R, Bettinelli, M, Birsa, R, Bisplinghoff, J, Bordalo, P, Bradamante, Franco, Bravar, A, Bressan, Andrea, Brona, G, Burtin, E, BUSSA M., P, Chapiro, A, Chiosso, M, Cicuttin, A, Colantoni, M, Costa, S, CRESPO M., L, DALLA TORRE, S, Dafni, T, Das, S, DASGUPTA S., S, DE MASI, R, Dedek, N, DENISOV O., Yu, Dhara, L, Diaz, V, DINKELBACH A., M, DONSKOV S., V, DOROFEEV V., A, Doshita, N, Duic, V, Dünnweber, W, EVERSHEIM P., D, Eyrich, W, Faessler, M, Falaleev, V, Ferrero, A, Ferrero, L, Finger, M, FINGER M., Jr, Fischer, H, Franco, C, Franz, J, FRIEDRICH J., M, Frolov, V, Garfagnini, R, Gautheron, F, GAVRICHTCHOUK O., P, Gazda, R, Gerassimov, S, Geyer, R, Giorgi, M, Gobbo, B, Goertz, S, GORIN A., M, Grabmüller, S, GRAJEK O., A, Grasso, A, Grube, B, Gushterski, R, Guskov, A, Haas, F, Hannappel, J, VON HARRACH, D, Hasegawa, T, Heckmann, J, Hedicke, S, HEINSIUS F., H, Hermann, R, Hess, C, Hinterberger, F, VON HODENBERG, M, Horikawa, N, Horikawa, S, D'Hose, N, Ilgner, C, IOUKAEV A., I, Ishimoto, S, Ivanov, O, Ivanshin, Yu, Iwata, T, Jahn, R, Janata, A, Jasinski, P, Joosten, R, JOURAVLEV N., I, Kabuss, E, Kang, D, Ketzer, B, KHAUSTOV G., V, KHOKHLOV Y. U., A, Kisselev, Yu, Klein, F, Klimaszewski, K, Koblitz, S, KOIVUNIEMI J., H, KOLOSOV V., N, KOMISSAROV E., V, Kondo, K, Königsmann, K, Konorov, I, KONSTANTINOV V., F, KORENTCHENKO A., S, Korzenev, A, KOTZINIAN A., M, KOUTCHINSKI N., A, Kouznetsov, O, Kral, A, KRAVCHUK N., P, KROUMCHTEIN Z., V, Kuhn, R, Kunne, F, Kurek, K, LADYGIN M., E, Lamanna, M, LE GOFF J., M, LEDNEV A., A, Lehmann, A, Levorato, Stefano, Lichtenstadt, J, Liska, T, Ludwig, I, Maggiora, A, Maggiora, M, Magnon, A, MALLOT G., K, Mann, A, Marchand, C, Marroncle, J, Martin, Anna, Marzec, J, Massmann, F, Matsuda, T, MAXIMOV A., N, Meyer, W, Mielech, A, MIKHAILOV Y. U., V, MOINESTER M., A, Mutter, A, Nagaytsev, A, Nagel, T, Nähle, O, Nassalski, J, Neliba, S, Nerling, F, Neubert, S, NEYRET D., P, NIKOLAENKO V., I, Nikolaev, K, OLSHEVSKY A., G, Ostrick, M, Padee, A, Pagano, P, Panebianco, S, Panknin, R, Panzieri, D, Paul, S, PAWLUKIEWICZ KAMINSKA, B, PESHEKHONOV D., V, PESHEKHONOV V., D, Piragino, G, Platchkov, S, Pochodzalla, J, Polak, J, POLYAKOV V., A, Pretz, J, Procureur, S, Quintans, C, RAJOTTE J., F, Ramos, S, Rapatsky, V, Reicherz, G, Reggiani, D, Richter, A, Robinet, F, Rocco, E, Rondio, E, ROZHDESTVENSKY A., M, RYABCHIKOV D., I, SAMOYLENKO V., D, Sandacz, A, Santos, H, SAPOZHNIKOV M., G, Sarkar, S, SAVIN I., A, Schiavon, Paolo, Schill, C, Schmitt, L, Schönmeier, P, Schröder, W, SHEVCHENKO O., Yu, SIEBERT H., W, Silva, L, Sinha, L, SISSAKIAN A., N, Slunecka, M, SMIRNOV G., I, Sosio, S, Sozzi, F, Srnka, A, Stinzing, F, Stolarski, M, SUGONYAEV V., P, Sulc, M, Sulej, R, TCHALISHEV V., V, Tessaro, S, Tessarotto, F, Teufel, A, TKATCHEV L., G, Venugopal, G, Virius, M, VLASSOV N., V, Vossen, A, Webb, R, Weise, E, Weitzel, Q, Windmolders, R, Wirth, S, Wisblicki, W, Wollny, H, Zaremba, K, Zavertyaev, M, Zemlyanichkina, E, Zhao, J, Ziegler, R, and Zvyagin, A.
Subjects: Quark, Nuclear and High Energy Physics, Particle physics, magnetic spectrometer: COMPASS, Structure functions, media_common.quotation_subject, Hadron, polarization: longitudinal, FOS: Physical sciences, polarized target, cross section: ratio, Deep inelastic scattering, muon deuteron: deep inelastic scattering, 01 natural sciences, Asymmetry, x-dependence, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), charged particle: multiple production, negative particle: electroproduction, Experiment-HEP, 13.88.+e, 0103 physical sciences, structure function: moment, 010306 general physics, Nuclear Experiment, media_common, Physics, Quantum chromodynamics, Muon, Valence (chemistry), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, cross section: difference, CERN SPS, positive particle: electroproduction, Deuterium, quark: valence, High Energy Physics::Experiment, muon: polarized beam, quark: polarization, 140-180 GeV, spin: asymmetry, 13.60.Hb, Particle Physics - Experiment, experimental results
Abstract: The semi-inclusive difference asymmetry A^{h^{+}-h^{-}} for hadrons of opposite charge has been measured by the COMPASS experiment at CERN. The data were collected in the years 2002-2004 using a 160 GeV polarised muon beam scattered off a large polarised ^6LiD target and cover the range 0.006 < x < 0.7 and 1 < Q^2 < 100 (GeV/c)^2. In leading order QCD (LO) the asymmetry A_d^{h^{+}-h^{-}} measures the valence quark polarisation and provides an evaluation of the first moment of Delta u_v + Delta d_v which is found to be equal to 0.40 +- 0.07 (stat.) +- 0.05 (syst.) over the measured range of x at Q^2 = 10 (GeV/c)^2. When combined with the first moment of g_1^d previously measured on the same data, this result favours a non-symmetric polarisation of light quarks Delta u-bar = - Delta d-bar at a confidence level of two standard deviations, in contrast to the often assumed symmetric scenario Delta u-bar = Delta d-bar = Delta s-bar = Delta s., 7 pages, 3 figures, COMPASS, revised: details added, author list updated
Published: 2007

30. Precise determination of the spin structure function g(1) of the proton, deuteron, and neutron

Author: L. A. Linden-Levy, W.-D. Nowak, V. A. Gapienko, P. Zupranski, J. Streit, L. Felawka, I.A. Savin, N. Meyners, G. Rosner, W. Augustyniak, Shan Wang, G. P. Capitani, H. Böttcher, Andreas Schäfer, N. Bianchi, L. Rubacek, L. Lapikás, D. Veretennikov, G. Schnell, A. Funel, A. Nagaitsev, G. van der Steenhoven, A. Osborne, Salvatore Frullani, U. Stosslein, H. Ohsuga, Arne Vandenbroucke, L. Lagamba, Z. Akopov, Riccardo Fabbri, J. G. Rubin, P. F. Dalpiaz, Y. Naryshkin, Hidekazu Tanaka, G. Iarygin, P. Tait, Morgan Murray, T. A. Shibata, R.O. Avakian, Tetsuya Hasegawa, F. Giordano, A. Rostomyan, A. R. Reolon, Tsutomu Kobayashi, Y. Salomatin, M. Contalbrigo, A. Avetissian, P. Lenisa, A. Trzcinski, H. E. Jackson, H. Marukyan, N. Akopov, V. G. Krivokhijine, A. Airapetian, H. P. Blok, Y. X. Ye, M. Statera, A. Brull, B. Marianski, Martin Raithel, E. Devitsin, Wolfgang Lorenzon, E. C. Aschenauer, V. Shutov, A. Kisselev, B. Q. Ma, K. Garrow, Ivana Hristova, Hasko Stenzel, M. Capiluppi, C. Vogel, B. Hommez, C. Weiskopf, Alessandra Fantoni, M. Hoek, I. Sanjiev, G. Gapienko, F. Stinzing, J. Stewart, V. A. Kozlov, D. Reggiani, M. Ehrenfried, K. Rith, R. De Leo, P. E. Reimer, V. A. Korotkov, Michael Tytgat, Naomi C R Makins, R. Perez-Benito, B. Tchuiko, M. Kopytin, B. Maiheu, J. Dreschler, V. Vikhrov, M. Hartig, M. Demey, O. Grebeniouk, M. Stancari, Wouter Deconinck, P. Di Nezza, S. Taroian, P. Liebing, J. Lu, I. M. Gregor, Andrey V. Izotov, A. Jgoun, S. Yen, C. Shearer, B. Seitz, A. Borissov, Valeria Muccifora, C. Riedl, Ralf Kaiser, U. Elschenbroich, W.H.A. Hesselink, Y. Van Haarlem, M. Diefenthaler, E. Steffens, J. Seele, P. B. van der Nat, K. P. Schüler, E. De Sanctis, T. Michler, G. Elbakian, Franco Garibaldi, A. Hillenbrand, G. Gavrilov, H. Guler, A. Borysenko, A. Gute, A. Andrus, Eugenio Nappi, V. Mexner, E. Avetissian, N. Pickert, O. Mikloukho, Dirk Ryckbosch, M. Negodaev, S. Lu, Adel Terkulov, C. A. Miller, Y. Gärber, D. Gabbert, Y. J. Mao, P. Kravchenko, F. Masoli, T. Keri, J. J. M. Steijger, Michael Düren, A. Elalaoui-Moulay, Frank Ellinghaus, B. Zihlmann, E. R. Kinney, Cynthia Marie Hadjidakis, Y. Miyachi, D. Hasch, S. Belostotski, V. Bryzgalov, K. Sinram, L. De Nardo, Zhenyu Ye, V. Gharibyan, A. Reischl, B. Krauss, G. Ciullo, Y. Holler, A. Ivanilov, (Astro)-Particles Physics, Photo Conversion Materials, and Student Lab and Education
Subjects: Physics, HERMES experiment, Nuclear and High Energy Physics, Proton, FOS: Physical sciences, 14.20.Dh, 13.88.+e, 13.60.Hb, 13.60.−r, HERA, Inelastic scattering, High Energy Physics - Experiment, NO, Nuclear physics, High Energy Physics - Experiment (hep-ex), Deuterium, High Energy Physics::Experiment, Neutron, ddc:530, Atomic physics, Nuclear Experiment, Nucleon, Spin-½
Abstract: Precise measurements of the spin structure functions of the proton $g_1^p(x,Q^2)$ and deuteron $g_1^d(x,Q^2)$ are presented over the kinematic range $0.0041 \leq x \leq 0.9$ and $0.18 $ GeV$^2$ $\leq Q^2 \leq 20$ GeV$^2$. The data were collected at the HERMES experiment at DESY, in deep-inelastic scattering of 27.6 GeV longitudinally polarized positrons off longitudinally polarized hydrogen and deuterium gas targets internal to the HERA storage ring. The neutron spin structure function $g_1^n$ is extracted by combining proton and deuteron data. The integrals of $g_1^{p,d}$ at $Q^2=5$ GeV$^2$ are evaluated over the measured $x$ range. Neglecting any possible contribution to the $g_1^d$ integral from the region $x \leq 0.021$, a value of $0.330 \pm 0.011\mathrm{(theo.)}\pm0.025\mathrm{(exp.)}\pm 0.028$(evol.) is obtained for the flavor-singlet axial charge $a_0$ in a leading-twist NNLO analysis.
Published: 2007

31. Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

Author: A. Airapetian, A. Reischl, L. Lagamba, C. Shearer, B. Seitz, Z. Akopov, Shan Wang, H. Ohsuga, Klaus Rith, U. Elschenbroich, F. Stinzing, P. B. van der Nat, H. Y. Lu, A. Borissov, V. A. Gapienko, A. Nagaitsev, S. Frullani, G. Ciullo, M. Demey, C. A. Miller, N. Pickert, Dirk Ryckbosch, A. Rostomyan, A. R. Reolon, A. Avetissian, P. F. Dalpiaz, V. A. Korotkov, G. Iarygin, I. M. Gregor, R. Seidl, Hidekazu Tanaka, M. Stancari, M. Beckmann, A. Elalaoui-Moulay, Frank Ellinghaus, W.-D. Nowak, E. R. Kinney, M. Statera, A. Laziev, P. E. Reimer, K. Garrow, N. Akopov, L. Rubacek, Andrey V. Izotov, M. Bouwhuis, H. Böttcher, V. A. Kozlov, J. Seele, Valeria Muccifora, H. Marukyan, A. Osborne, Y. Naryshkin, Y. X. Ye, G. Gapienko, A. Hillenbrand, G. Elbakian, J. Volmer, Alessandra Fantoni, A. Funel, M. Hoek, A. Ivanilov, J. Stewart, K. P. Schüler, P. Zupranski, Y. J. Mao, P. Tait, B. Maiheu, A. Brull, B. Tchuiko, M. Kopytin, M. Contalbrigo, Tsutomu Kobayashi, L. Felawka, M. Amarian, W. Augustyniak, A. Andrus, Martin Raithel, Eugenio Nappi, E. De Sanctis, T. Michler, Y. Salomatin, S. Lu, E. C. Aschenauer, J. J. M. Steijger, M. Negodaev, Michael Düren, G. van der Steenhoven, V. Shutov, B. Krauss, G. P. Capitani, Adel Terkulov, I. Sanjiev, F. Masoli, Naomi C R Makins, Michael Tytgat, E. Avetissian, D. Balin, Nicola Bianchi, O. Mikloukho, W.H.A. Hesselink, G. Schnell, T. Chen, D. Gaskell, A. Jgoun, B. Q. Ma, H. E. Jackson, M. Hartig, N. Meyners, G. Rosner, L. A. Linden-Levy, K. Oganessyan, Y. Holler, S. Taroian, A. Borysenko, V. G. Krivokhijine, M. Ehrenfried, B. Marianski, J. Lu, C. Vogel, S. Yen, P. Lenisa, R. De Leo, Rezo Shanidze, A. Trzcinski, Ralf Kaiser, S. Belostotski, V. Bryzgalov, Wouter Deconinck, P. Di Nezza, F. Garibaldi, P. Liebing, E. Steffens, J. Dreschler, G. Gavrilov, V. Vikhrov, K. Sinram, L. De Nardo, Zhenyu Ye, Manuella Vincter, Hasko Stenzel, M. Capiluppi, L. Lapikás, I.A. Savin, J. G. Rubin, V. Gharibyan, V. Mexner, K. Hafidi, Morgan Murray, Y. Van Haarlem, B. Zihlmann, P. Bailey, T. A. Shibata, Cynthia Marie Hadjidakis, Y. Miyachi, R.O. Avakian, Andreas Schäfer, J. Wendland, W. Sommer, D. Hasch, D. H. Potterveld, E. Devitsin, A. Kisselev, Arne Vandenbroucke, Riccardo Fabbri, D. Reggiani, O. Grebeniouk, C. Riedl, H. P. Blok, Wolfgang Lorenzon, Ivana Hristova, B. Hommez, (Astro)-Particles Physics, and Photo Conversion Materials
Subjects: HERMES experiment, Elastic scattering, Physics, Nuclear and High Energy Physics, Particle physics, Photon, Scattering, media_common.quotation_subject, High Energy Physics::Phenomenology, Compton scattering, FOS: Physical sciences, DESY, HERA, 13.60.Fz Elastic and Compton scattering, 14.20.Dh, 24.85.+p, Asymmetry, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), ddc:530, High Energy Physics::Experiment, Nuclear Experiment, media_common
Abstract: The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or positron beam scattered off an unpolarized hydrogen gas target. The observed asymmetry is attributed to the interference between the Bethe-Heitler process and the deeply virtual Compton scattering (DVCS) process. The interference term is sensitive to DVCS amplitudes, which provide the most direct access to generalized parton distributions. © 2007 The American Physical Society.
Published: 2007

32. Beam-spin asymmetries in the azimuthal distribution of pion electroproduction

Author: V. A. Korotkov, Wouter Deconinck, V. Mexner, J. Lu, S. Yen, B. Zihlmann, G. Elbakian, Y. Miyachi, H. Guler, Ralf Kaiser, B. Hommez, A. Nagaitsev, A. Borissov, M. Demey, G. Iarygin, H. Marukyan, E. Steffens, Dirk Ryckbosch, Hasko Stenzel, A. Airapetian, P. Lenisa, I.A. Savin, I. M. Gregor, V. Kozlov, A. Brull, G. Gavrilov, J. G. Rubin, A. Andrus, A. Trzcinski, B. Marianski, K. Sinram, L. De Nardo, T. Keri, Tsutomu Kobayashi, Y. J. Mao, P. Kravchenko, O. Grebeniouk, A. Elalaoui-Moulay, Frank Ellinghaus, E. R. Kinney, S. Lu, Y. Naryshkin, M. Negodaev, G.P. Capitani, M. Statera, S. Frullani, F. Stinzing, H. E. Jackson, V. G. Krivokhijine, Andreas Schäfer, N. Pickert, L. Felawka, M. Amarian, H. P. Blok, A. R. Reolon, T. A. Shibata, Adel Terkulov, C. Vogel, A. Funel, W.H.A. Hesselink, V. Muccifora, V. Vikhrov, J. J. M. Steijger, Michael Düren, Michael Tytgat, Y. Salomatin, Wolfgang Lorenzon, M. Stancari, P. E. Reimer, L. Lagamba, P. Di Nezza, P. Bailey, G. van der Steenhoven, C. A. Miller, Arne Vandenbroucke, P. Zupranski, Morgan Murray, R.O. Avakian, L. Rubacek, Riccardo Fabbri, B. Krauss, S. Taroian, K. P. Schüler, A. Fantoni, Ivana Hristova, H. Avakian, P.F. Dalpiaz, B. Q. Ma, A. Borysenko, F. Giordano, Alessandro Bacchetta, W. Augustyniak, M. Contalbrigo, E. Devitsin, O. Mikloukho, M. Ehrenfried, N. Meyners, Martin Raithel, W.-D. Nowak, R. De Leo, J. Stewart, K. Garrow, G. Rosner, E. C. Aschenauer, A. Kisselev, V. Shutov, A. Osborne, R. Seidl, E. Avetisyan, E. De Sanctis, T. Michler, Klaus Rith, V. Gharibyan, K. Oganessyan, I. Sanjiev, H. Böttcher, Naomi C R Makins, J. Streit, F. Masoli, S. Belostotski, D. Reggiani, M. Hartig, V. Bryzgalov, F. Garibaldi, C. Hadjidakis, P. Tait, J. Dreschler, M. Capiluppi, P. Liebing, Andrey V. Izotov, Z. Akopov, D. Hasch, Z. Ye, Hidekazu Tanaka, A. Jgoun, Y. Van Haarlem, C. Riedl, G. Gapienko, Shan Wang, H. Ohsuga, A. Rostomyan, A. Avetissian, K. Hafidi, M. Diefenthaler, J. Seele, A. Hillenbrand, A. Ivanilov, A. Reischl, Y. Holler, G. Ciullo, Tetsuya Hasegawa, V. A. Gapienko, N. Bianchi, R. Perez-Benito, B. Maiheu, C. Shearer, B. Seitz, E. Nappi, U. Elschenbroich, L. Lapikás, P. B. van der Nat, Y. X. Ye, L. A. Linden-Levy, M. Hoek, G. Schnell, B. Tchuiko, M. Kopytin, (Astro)-Particles Physics, Photo Conversion Materials, and Student Lab and Education
Subjects: Nuclear and High Energy Physics, Meson, Hadron, FOS: Physical sciences, Virtual particle, Inelastic scattering, 01 natural sciences, 7. Clean energy, 24.85.+p, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, 13.88.+e, 0103 physical sciences, ddc:530, SDG 7 - Affordable and Clean Energy, 010306 general physics, Nuclear Experiment, 13.60.-r, Physics, 010308 nuclear & particles physics, 13.87.Fh, 14.20.Dh, HERA, Science General, Scattering amplitude, Physics::Accelerator Physics, High Energy Physics::Experiment, Dimensionless quantity
Abstract: A measurement of the beam-spin asymmetry in the azimuthal distribution of pions produced in semi-inclusive deep-inelastic scattering off protons is presented. The measurement was performed using the HERMES spectrometer with a hydrogen gas target and the longitudinally polarized 27.6 GeV positron beam of HERA. The sinusoidal amplitude of the dependence of the asymmetry on the angle ϕ of the hadron production plane around the virtual photon direction relative to the lepton scattering plane was measured for π + π + , π − π − and π 0 π 0 mesons. The dependence of this amplitude on the Bjorken scaling variable and on the pion fractional energy and transverse momentum is presented. The results are compared to theoretical model calculations.
Published: 2007

33. Double-hadron leptoproduction in the nuclear medium

Author: V. A. Korotkov, Klaus Rith, M. Stancari, J. Stewart, J. J. M. Steijger, A. Brüll, Michael Düren, G. Elbakian, D. Veretennikov, A. Airapetian, B. Zihlmann, K. Sinram, L. De Nardo, Zhenyu Ye, V. Gharibyan, W. Augustyniak, Cynthia Marie Hadjidakis, Y. Miyachi, D. Hasch, A. Funel, F. Giordano, P. Di Nezza, G. van der Steenhoven, M. Demey, Shan Wang, H. Ohsuga, A. Osborne, P. Liebing, R. Seidl, F. Stinzing, Hasko Stenzel, V. A. Gapienko, I. M. Gregor, G. Iarygin, M. Capiluppi, P. Lenisa, L. A. Linden-Levy, H. Böttcher, Michael Tytgat, A. Trzcinski, W.H.A. Hesselink, W.-D. Nowak, Tsutomu Kobayashi, A. Borysenko, H. Marukyan, J. G. Rubin, A. Rostomyan, A. Avetissian, S. Taroian, L. Lapikás, Dirk Ryckbosch, B. Hommez, Frank Ellinghaus, J. Streit, S. Lu, Adel Terkulov, G. Gapienko, I.A. Savin, E. R. Kinney, O. Grebeniouk, C. Riedl, C. Vogel, Salvatore Frullani, P. Tait, P. Bailey, L. Lagamba, H. Guler, Z. Akopov, Y. Naryshkin, P. F. Dalpiaz, Eugenio Nappi, A. Borissov, V. Vikhrov, A. R. Roelon, J. Dreschler, Hidekazu Tanaka, R. Perez-Benito, B. Maiheu, A. Andrus, H. E. Jackson, Andreas Schäfer, H. P. Blok, M. Negodaev, Morgan Murray, A. Jgoun, B. Krauss, Y. Van Haarlem, B. Marianski, Wolfgang Lorenzon, Tetsuya Hasegawa, Valeria Muccifora, Ivana Hristova, Y. Salomatin, K. P. Schüler, S. Belostotski, P. Zupranski, B. Q. Ma, V. Bryzgalov, M. Ehrenfried, R. De Leo, E. Avetissian, Nicola Bianchi, O. Mikloukho, Arne Vandenbroucke, N. Meyners, G. Rosner, Riccardo Fabbri, I. Sanjiev, K. Garrow, V. A. Kozlov, L. Felawka, M. Amarian, A. Nagaitsev, G. P. Capitani, G. Schnell, N. Akopov, Y. J. Mao, P. Kravchenko, V. G. Krivokhijine, F. Masoli, P. E. Reimer, M. Contalbrigo, Y. X. Ye, Martin Raithel, E. C. Aschenauer, V. Shutov, C. Shearer, B. Seitz, Naomi C R Makins, U. Elschenbroich, T. Keri, P. B. van der Nat, M. Hartig, J. Lu, Alessandra Fantoni, Wouter Deconinck, S. Yen, M. Hoek, K. A. Griffioen, Ralf Kaiser, B. Tchuiko, M. Kopytin, E. Steffens, G. Gavrilov, V. Mexner, T. A. Shibata, R.O. Avakian, A. Ivanilov, A. Reischl, E. Devitsin, A. Kisselev, G. Ciullo, D. Reggiani, Y. Holler, E. De Sanctis, T. Michler, Franco Garibaldi, M. Diefenthaler, J. Seele, A. Hillenbrand, N. Pickert, C. A. Miller, A. Elalaoui-Moulay, M. Statera, Andrey V. Izotov, L. Rubacek, (Astro)-Particles Physics, Photo Conversion Materials, and Student Lab and Education
Subjects: Particle physics, Nuclear Theory, FOS: Physical sciences, General Physics and Astronomy, chemistry.chemical_element, Inelastic scattering, 25.30.Rw, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Xenon, ddc:550, 13.60.−r, 13.87.Fh, 25.75.Gz, Nuclear Experiment, Physics, Scattering, High Energy Physics::Phenomenology, Krypton, HERA, Nuclear matter, Deep inelastic scattering, chemistry, Deuterium, High Energy Physics::Experiment
Abstract: Physical review letters 96, 162301 (2006). doi:10.1103/PhysRevLett.96.162301, Published by APS, College Park, Md.
Published: 2006

34. Longitudinal spin transfer to the Lambda hyperon in semiinclusive deep-inelastic scattering

Author: B. Hommez, B. Marianski, K. Sinram, L. De Nardo, A. Osborne, B. Krauss, Zhenyu Ye, Y. Van Haarlem, A. Borissov, V. Gharibyan, K. Hafidi, R. Seidl, P. E. Reimer, M. Bouwhuis, H. Böttcher, M. Diefenthaler, Morgan Murray, G. Iarygin, J. Seele, B. Zihlmann, V. Vikhrov, Manuella Vincter, A. Hillenbrand, Houbing Lu, P. Tait, J. Dreschler, A. Andrus, Cynthia Marie Hadjidakis, Y. Miyachi, J. Wendland, W. Sommer, M. Demey, M. Negodaev, D. Hasch, D. H. Potterveld, Dirk Ryckbosch, H. Marukyan, S. Belostotski, V. Bryzgalov, P. Bailey, I. M. Gregor, Y. Salomatin, Tsutomu Kobayashi, W. Augustyniak, M. Statera, Arne Vandenbroucke, Riccardo Fabbri, C. Vogel, B. Q. Ma, H. P. Blok, M. Beckmann, M. Ehrenfried, R. De Leo, Wolfgang Lorenzon, Andrey V. Izotov, Klaus Rith, J. J. M. Steijger, Michael Düren, T. A. Shibata, V. A. Korotkov, R.O. Avakian, A. Elalaoui-Moulay, Frank Ellinghaus, H. Ohsuga, Ivana Hristova, E. R. Kinney, M. Stancari, A. Jgoun, E. Devitsin, C. Riedl, Y. Naryshkin, Michael Tytgat, H. E. Jackson, A. Kisselev, V. G. Krivokhijine, A. Brüll, P. Lenisa, A. Trzcinski, N. Pickert, D. Reggiani, W.-D. Nowak, G. Elbakian, T. Chen, S. Taroian, C. A. Miller, Eugenio Nappi, S. I. Manaenkov, A. Nagaitsev, K. Oganessyan, A. Rostomyan, Salvatore Frullani, A. Funel, A. R. Reolon, A. Avetissian, G. van der Steenhoven, P. F. Dalpiaz, A. Borysenko, G. Gapienko, K. P. Schüler, I.A. Savin, Andreas Schäfer, E. De Sanctis, T. Michler, Franco Garibaldi, C. Shearer, B. Seitz, B. Maiheu, E. Avetissian, D. Balin, Nicola Bianchi, N. Akopov, O. Mikloukho, U. Elschenbroich, P. B. van der Nat, Y. J. Mao, P. Kravchenko, V. A. Gapienko, P. Di Nezza, P. Liebing, F. Masoli, J. G. Rubin, A. Laziev, H. C. Chiang, Song-Ming Wang, Y. X. Ye, Alessandra Fantoni, M. Hoek, B. Tchuiko, M. Kopytin, T. Keri, Wouter Deconinck, V. Mexner, Hidekazu Tanaka, K. Garrow, V. A. Kozlov, P. Zupranski, L. Lagamba, Z. Akopov, N. Meyners, J. Lu, G. Rosner, S. Yen, Ralf Kaiser, A. Airapetian, E. Steffens, F. Stinzing, G. Gavrilov, Xian Chen, J. Volmer, A. Ivanilov, L. Felawka, M. Amarian, X. R. Lu, M. Contalbrigo, G. P. Capitani, Martin Raithel, E. C. Aschenauer, G. Schnell, V. Shutov, I. Sanjiev, Naomi C R Makins, M. Hartig, A. Reischl, G. Ciullo, L. Rubacek, O. Grebeniouk, L. A. Linden-Levy, Y. Holler, L. Lapikás, J. Stewart, W.H.A. Hesselink, Valeria Muccifora, S. Lu, Adel Terkulov, Hasko Stenzel, M. Capiluppi, (Astro)-Particles Physics, and Photo Conversion Materials
Subjects: HERMES experiment, Nuclear and High Energy Physics, Particle physics, Lambda baryon, Lambda, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Positron, 13.88.+e, 0103 physical sciences, ddc:530, 13.60.−r, 13.60.Rj, SDG 7 - Affordable and Clean Energy, 010306 general physics, Physics, 010308 nuclear & particles physics, Scattering, Hyperon, HERA, Deep inelastic scattering, Physics::Accelerator Physics, High Energy Physics::Experiment
Abstract: The transfer of polarization from a high-energy positron to a {lambda}{sup 0} hyperon produced in semiinclusive deep-inelastic scattering has been measured. The data have been obtained by the HERMES experiment at DESY using the 27.6 GeV longitudinally polarized positron beam of the HERA collider and unpolarized gas targets internal to the positron (electron) storage ring. The longitudinal spin-transfer coefficient is found to be D{sub LL{sup '}}{sup {lambda}}=0.11{+-}0.10(stat){+-}0.03(syst) at an average fractional energy carried by the {lambda}{sup 0} hyperon =0.45. The dependence of D{sub LL{sup '}}{sup {lambda}} on both the fractional energy z and the fractional longitudinal momentum x{sub F} is presented.
Published: 2006

35. BEAM INDUCED DEPOLARIZATION IN THE HERMES TRANSVERSELY POLARIZED HYDROGEN TARGET

Author: D. Reggiani
Subjects: Physics, Optics, Hydrogen, chemistry, business.industry, chemistry.chemical_element, Depolarization, business, Beam (structure)
Published: 2005

36. Measurement of the tensor structure function b1 of the deuteron

Author: M. Vogt, H. Ohsuga, G. Gapienko, M. C. Simani, A. Rostomyan, A. R. Reolon, A. Avetissian, A. Tkabladze, B. D. Fox, G. Schnell, P. E. Reimer, M. Henoch, K. Oganessyan, Hidekazu Tanaka, H. E. Jackson, V. G. Krivokhijine, Gharibyan, T. A. Shibata, R.O. Avakian, E. Devitsin, W. Augustyniak, Erika Garutti, M. Stancari, U. Stosslein, L. Lagamba, Z. Akopov, J. Seele, S. Bernreuther, Shutov, Korotkov, A. Brull, B. Seitz, B. Hommez, J. Wilbert, Arne Vandenbroucke, Riccardo Fabbri, Di Nezza P, Muccifora, Michael Tytgat, M. Demey, Gapienko, I. M. Gregor, Alessandra Fantoni, M. Hoek, Y. Holler, S. Taroian, G. Graw, A. Andrus, W.-D. Nowak, Klaus Rith, D. Heesbeen, Mexner, G. Iarygin, B. Tchuiko, M. Kopytin, M. Negodaev, A. Nass, P. Bailey, U. Elschenbroich, H. Marukyan, A. Airapetian, A. Kisselev, L. Felawka, M. Amarian, A. Borissov, De Leo R, G. P. Capitani, M. Bouwhuis, L. G. Greeniaus, F. Stinzing, K. Hafidi, A. Laziev, H. Böttcher, B. Maiheu, C. Weiskopf, D. Reggiani, A. Jgoun, I.A. Savin, A. Hillenbrand, A. Fechtchenko, Y. X. Ye, P. Zupranski, P. Lenisa, A. Trzcinski, J. Dreschler, A. Elalaoui-Moulay, Frank Ellinghaus, B. Marianski, J. Volmer, A. Ivanilov, P. F. Dalpiaz, E. R. Kinney, N. Meyners, P. Tait, G. Rosner, V. V. Ammosov, F. Garibaldi, K. P. Schüler, De Sanctis E, K. Garrow, Y. Salomatin, H. P. Blok, E. Avetissian, B. Zihlmann, D. Balin, Nicola Bianchi, Y. Naryshkin, O. Mikloukho, Ralf Hertenberger, Wolfgang Lorenzon, J. G. Rubin, Hasko Stenzel, A. Reischl, B. Q. Ma, H. C. Chiang, M. Ehrenfried, G. Ciullo, Christian Schill, Bryzgalov, Houbing Lu, Eugenio Nappi, S. Potashov, L. Rubacek, D. H. Potterveld, Y. J. Mao, R. Seidl, M. Contalbrigo, Manuella Vincter, Martin Raithel, E. C. Aschenauer, De Nardo L, van der Steenhoven G, S. Belostotski, Kozlov, M. Hartig, I. Sanjiev, Naomi C R Makins, J. Stewart, S. Frullani, O. Grebeniouk, C. Riedl, P. Liebing, J. Lu, M. Beckmann, S. Yen, C. A. Miller, Ralf Kaiser, E. Steffens, G. Gavrilov, Vikhrov, Baturin, B. Krauss, L. A. Linden-Levy, N. Pickert, Dirk Ryckbosch, van der Nat Pb, S. Lu, M. Statera, Adel Terkulov, Andrey V. Izotov, D. Gaskell, L. Lapikás, Jeffrey Brack, Katerina Lipka, C. Vogel, G. Elbakian, J. J. M. Steijger, Michael Düren, Y. Miyachi, J. Wendland, D. Hasch, K. Sinram, Zhenyu Ye, C. Shearer, T. Chen, A. Nagaitsev, Michel Vetterli, N. Akopov, F. Masoli, Rezo Shanidze, Andreas Schäfer, W.H.A. Hesselink, A. Borysenko, (Astro)-Particles Physics, and Photo Conversion Materials
Subjects: HERMES experiment, Particle physics, media_common.quotation_subject, FOS: Physical sciences, General Physics and Astronomy, Spin structure, Inelastic scattering, Asymmetry, High Energy Physics - Experiment, 14.65.−q, Nuclear physics, High Energy Physics - Experiment (hep-ex), 13.88.+e, SDG 7 - Affordable and Clean Energy, Nuclear Experiment, media_common, Physics, 13.60.−r, 14.20.Dh, Scattering, Momentum transfer, HERA, Deep inelastic scattering, High Energy Physics::Experiment
Abstract: The \Hermes experiment has investigated the tensor spin structure of the deuteron using the 27.6 GeV/c positron beam of \Hera. The use of a tensor polarized deuteron gas target with only a negligible residual vector polarization enabled the first measurement of the tensor asymmetry $\At$ and the tensor structure function $\bd$ for average values of the Bj��rken variable $0.01<< x>
Published: 2005

37. Subleading-twist effects in single-spin asymmetries in semi-inclusive deep-inelastic scattering on a longitudinally polarized hydrogen target

Author: P. Zupranski, P. Lenisa, L. Felawka, M. Amarian, Houbing Lu, A. Trzcinski, L. Lagamba, P. Di Nezza, C. Shearer, B. Seitz, E. Nappi, V. Muccifora, F. Masoli, S. Belostotski, G. Iarygin, V. Bryzgalov, A. Funel, G. van der Steenhoven, U. Elschenbroich, W.H.A. Hesselink, A. Borysenko, P. Bailey, G. Schnell, F. Garibaldi, N. Meyners, G. Rosner, Y. Salomatin, P. B. van der Nat, A. R. Reolon, Wouter Deconinck, H. Marukyan, Tsutomu Kobayashi, Andrey V. Izotov, J. Volmer, D. Hasch, P. E. Reimer, Hasko Stenzel, T. Chen, K. Hafidi, M. Negodaev, Z. Akopov, C. A. Miller, W. Augustyniak, M. Diefenthaler, A. Ivanilov, M. Contalbrigo, Martin Raithel, V. Mexner, S. Lu, G. Gapienko, Adel Terkulov, A. Fantoni, T. A. Shibata, Hidekazu Tanaka, E. C. Aschenauer, V. Shutov, V. A. Gapienko, R.O. Avakian, B. Q. Ma, I. Sanjiev, E. De Sanctis, T. Michler, B. Krauss, A. Nagaitsev, V. Gharibyan, A. Reischl, Dirk Ryckbosch, N. Bianchi, Naomi C R Makins, E. Devitsin, A. Kisselev, A. Osborne, T. Keri, D. Reggiani, M. Ehrenfried, H. E. Jackson, K. Garrow, V. G. Krivokhijine, A. Airapetian, V. A. Korotkov, J. Seele, J. Dreschler, R. De Leo, M. Demey, A. Hillenbrand, S. Frullani, A. Laziev, J. Lu, S. Yen, I. M. Gregor, F. Stinzing, L. Rubacek, A. Andrus, Michael Tytgat, Y. Holler, N. Pickert, Song-Ming Wang, N. Akopov, Ralf Kaiser, A. Elalaoui-Moulay, Frank Ellinghaus, S. Taroian, Y. X. Ye, G.P. Capitani, E. R. Kinney, E. Steffens, Y. J. Mao, H. Ohsuga, G. Elbakian, M. Hoek, Y. Naryshkin, G. Gavrilov, J. Stewart, B. Tchuiko, M. Kopytin, A. Rostomyan, A. Brüll, V. Vikhrov, A. Jgoun, Manuella Vincter, A. Avetissian, M. Statera, Y. Van Haarlem, C. Riedl, C. Vogel, Morgan Murray, R. Seidl, M. Bouwhuis, H. Böttcher, B. Maiheu, P. Tait, G. Ciullo, K. Sinram, L. De Nardo, Zhenyu Ye, B. Zihlmann, L. A. Linden-Levy, Y. Miyachi, J. Wendland, W. Sommer, D. H. Potterveld, L. Lapikás, M. Hartig, M. Capiluppi, P. Liebing, K. P. Schüler, B. Hommez, P.F. Dalpiaz, J. J. M. Steijger, Michael Düren, M. Stancari, D. Balin, O. Mikloukho, E. Avetissian, J. G. Rubin, A. Borissov, M. Beckmann, Klaus Rith, B. Marianski, C. Hadjidakis, I.A. Savin, Andreas Schäfer, W.-D. Nowak, Arne Vandenbroucke, Riccardo Fabbri, Alessandro Bacchetta, H. P. Blok, Wolfgang Lorenzon, Ivana Hristova, K. Oganessyan, V. Kozlov, O. Grebeniouk, (Astro)-Particles Physics, Photo Conversion Materials, and Student Lab and Education
Subjects: Quark, Nuclear and High Energy Physics, Particle physics, Proton, Meson, Nuclear Theory, FOS: Physical sciences, Inelastic scattering, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, 13.60.-r, 13.88.+e, 14.20.Dh, 14.65.-q, 0103 physical sciences, SDG 14 - Life Below Water, 010306 general physics, Nuclear Experiment, Spin-½, Physics, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Deep inelastic scattering, Physics::Accelerator Physics, High Energy Physics::Experiment
Abstract: Single-spin asymmetries in the semi-inclusive production of charged pions in deep-inelastic scattering from transversely and longitudinally polarized proton targets are combined to evaluate the subleading-twist contribution to the longitudinal case. This contribution is significantly positive for π + mesons and dominates the asymmetries on a longitudinally polarized target previously measured by Hermes . The subleading-twist contribution for π − mesons is found to be small.
Published: 2005

38. Search for an exoticS=−2,Q=−2baryon resonance at a mass near 1862 MeV in quasireal photoproduction

Author: Klaus Rith, A. Nagaitsev, A. Funel, C. Shearer, B. Seitz, B. Maiheu, G. van der Steenhoven, W. Augustyniak, A. Andrus, I.A. Savin, A. Borysenko, Andreas Schäfer, J. Seele, Morgan Murray, U. Elschenbroich, P. B. van der Nat, Salvatore Frullani, M. Negodaev, N. Akopov, P. Lenisa, A. Trzcinski, A. Hillenbrand, B. Krauss, P. E. Reimer, Wouter Deconinck, P. F. Dalpiaz, Alessandra Fantoni, M. Hoek, V. Mexner, V. A. Gapienko, V. A. Korotkov, B. Tchuiko, M. Kopytin, K. Sinram, L. De Nardo, Y. Van Haarlem, G. Iarygin, Zhenyu Ye, P. Bailey, M. Stancari, M. Beckmann, A. Elalaoui-Moulay, Frank Ellinghaus, E. R. Kinney, V. Gharibyan, K. Garrow, Y. J. Mao, R. Seidl, Tsutomu Kobayashi, H. Marukyan, M. Bouwhuis, H. Böttcher, Y. Naryshkin, B. Hommez, G. Gapienko, F. Masoli, V. A. Kozlov, Michael Tytgat, P. Tait, J. J. M. Steijger, Michael Düren, Houbing Lu, T. Keri, A. Borissov, S. Taroian, H. E. Jackson, Y. Salomatin, A. Laziev, G. Elbakian, K. Hafidi, S. Belostotski, V. G. Krivokhijine, V. Bryzgalov, A. Osborne, B. Q. Ma, M. Diefenthaler, B. Zihlmann, M. Ehrenfried, Y. X. Ye, S. Wang, T. A. Shibata, Eugenio Nappi, R.O. Avakian, Cynthia Marie Hadjidakis, Y. Miyachi, O. Grebeniouk, C. Riedl, R. De Leo, J. Wendland, W. Sommer, D. Hasch, E. Devitsin, D. H. Potterveld, A. Kisselev, D. Reggiani, L. Felawka, M. Amarian, Dirk Ryckbosch, P. Zupranski, J. Drechsler, A. Jgoun, G. P. Capitani, H. P. Blok, C. Vogel, G. Schnell, H. Ohsuga, Wolfgang Lorenzon, L. Lagamba, Z. Akopov, Ivana Hristova, V. Vikhrov, A. Rostomyan, A. R. Reolon, A. Avetissian, Manuella Vincter, N. Meyners, K. Oganessyan, G. Rosner, P. Di Nezza, Hidekazu Tanaka, P. Liebing, A. Airapetian, W.-D. Nowak, K. P. Schüler, E. De Sanctis, T. Michler, Franco Garibaldi, F. Stinzing, E. Avetissian, D. Balin, Nicola Bianchi, O. Mikloukho, J. G. Rubin, M. Statera, B. Marianski, Hasko Stenzel, M. Contalbrigo, M. Capiluppi, Andrey V. Izotov, Martin Raithel, E. C. Aschenauer, Arne Vandenbroucke, V. Shutov, Riccardo Fabbri, I. Sanjiev, S. Lu, Naomi C R Makins, Adel Terkulov, M. Hartig, A. Reischl, N. Pickert, T. Chen, F. Giordano, W.H.A. Hesselink, M. Demey, G. Ciullo, J. Lu, S. Yen, I. M. Gregor, C. A. Miller, Ralf Kaiser, Valeria Muccifora, E. Steffens, L. A. Linden-Levy, G. Gavrilov, L. Lapikás, J. Volmer, A. Ivanilov, L. Rubacek, Y. Holler, J. Stewart, and A. Brüll
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Resonance, Lambda baryon, 01 natural sciences, Baryon, Particle decay, Exotic baryon, 0103 physical sciences, Mass spectrum, Invariant mass, Atomic physics, 010306 general physics
Abstract: A search for an exotic baryon resonance with $S=\ensuremath{-}2$, $Q=\ensuremath{-}2$ has been performed in quasireal photoproduction on a deuterium target through the decay channel ${\ensuremath{\Xi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\Lambda}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}\ensuremath{\rightarrow}p{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}$. No evidence for a previously reported ${\ensuremath{\Xi}}^{--}(1860)$ resonance is found in the ${\ensuremath{\Xi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}$ invariant mass spectrum. An upper limit for the photoproduction cross section of 2.1 nb is found at the 90% confidence level. The photoproduction cross section for the ${\ensuremath{\Xi}}^{0}(1530)$ is found to be between 9 and 24 nb.
Published: 2005

39. Flavor decomposition of the sea-quark helicity distributions in the nucleon from semiinclusive deep inelastic scattering

Author: P. Zupranski, N. Meyners, G. Rosner, A. Airapetian, A. Borissov, Hidekazu Tanaka, A. Nagaitsev, A. Tkabladze, M. Negodaev, M. Contalbrigo, B. Hommez, Salvatore Frullani, P. E. Reimer, R. Seidl, C. Shearer, V. A. Korotkov, M. Bouwhuis, Martin Raithel, E. C. Aschenauer, V. Shutov, A. Hillenbrand, G. Graw, M. Henoch, V. A. Kozlov, I. Sanjiev, H. Ohsuga, Michel Vetterli, B. D. Fox, B. Zihlmann, H. C. Chiang, S. Belostotski, J. Volmer, H. P. Blok, Erika Garutti, H. Böttcher, A. Ivanilov, B. Seitz, M. Statera, V. A. Gapienko, G. Orlandi, V. Bryzgalov, Wolfgang Lorenzon, Naomi C R Makins, G. Schnell, P. F. Dalpiaz, M. Stancari, D. Gaskell, N. Akopov, K. Königsmann, V. Baturin, U. Elschenbroich, L. Felawka, M. Amarian, A. Fechtchenko, Ralf Hertenberger, E. De Sanctis, V. Gharibyan, Franco Garibaldi, G. Iarygin, G. Elbakian, K. P. Schüler, Y. Holler, S. Bernreuther, Andrey V. Izotov, A. Elalaoui-Moulay, Frank Ellinghaus, P. B. van der Nat, E. R. Kinney, P. Bailey, P. Tait, G. P. Capitani, A. Schwind, Dirk Ryckbosch, Valeria Muccifora, W.H.A. Hesselink, H. Marukyan, E. Avetissian, Nicola Bianchi, O. Mikloukho, A. Rostomyan, A. R. Reolon, Y. Naryshkin, J. Franz, Michael Tytgat, S. Potashov, O. Grebeniouk, H. Zohrabian, U. Stosslein, L. Lagamba, M. C. Simani, A. Avetissian, Z. Akopov, F. Masoli, J. Visser, M. Vogt, V. Vikhrov, Manuella Vincter, J. Lu, S. Taroian, S. Yen, G. V. Ybeles Smit, C. A. Miller, L. G. Greeniaus, C. Weiskopf, A. Andrus, Katerina Lipka, H. E. Jackson, Ralf Kaiser, J. Seele, B. Krauss, V. G. Krivokhijine, P. Di Nezza, Alessandra Fantoni, J. Ely, A. Reischl, Y. Miyachi, L. Rubacek, M. Hoek, A. Jgoun, C. Scarlett, K. Hafidi, E. Steffens, P. Liebing, C. Baumgarten, G. Gapienko, G. Gavrilov, P. Lenisa, G. Ciullo, C. Vogel, C. Riedl, R. Fabbri, T. A. Shibata, K. Oganessyan, J. Wendland, Christian Schill, R.O. Avakian, A. Trzcinski, Adel Terkulov, B. Tchuiko, M. Kopytin, D. Hasch, A. Nass, D. Reggiani, V. Mexner, L. Lapikás, E. Devitsin, J. Stewart, V. V. Ammosov, A. Brüll, J. Wilbert, Y. Gärber, D. H. Potterveld, Y. Salomatin, Arne Vandenbroucke, R. Shanidze, M. Hartig, A. Laziev, W. Augustyniak, N. Pickert, M. Ehrenfried, K. Garrow, R. De Leo, B. Marianski, Jeffrey Brack, W.-D. Nowak, Eugenio Nappi, A. Kisselev, B. Maiheu, M. Beckmann, K. Sinram, L. De Nardo, J. J. M. Steijger, Michael Düren, G. van der Steenhoven, T. Lindemann, Klaus Rith, D. Heesbeen, I.A. Savin, Andreas Schäfer, (Astro)-Particles Physics, Photo Conversion Materials, and Student Lab and Education
Subjects: Quark, Particle physics, Meson, High Energy Physics::Lattice, Nuclear Theory, Hadron, FOS: Physical sciences, General Physics and Astronomy, 13.60.–r, Inelastic scattering, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, 13.88.+e, Nuclear Experiment, 14.20.Dh, 14.65.–q, QC, Physics, High Energy Physics::Phenomenology, Quark model, Deep inelastic scattering, Baryon, High Energy Physics::Experiment
Abstract: Double-spin asymmetries of semi-inclusive cross sections for the production of identified pions and kaons have been measured in deep-inelastic scattering of polarized positrons on a polarized deuterium target. Five helicity distributions including those for three sea quark flavors were extracted from these data together with re-analyzed previous data for identified pions from a hydrogen target. These distributions are consistent with zero for all three sea flavors. A recently predicted flavor asymmetry in the polarization of the light quark sea appears to be disfavored by the data., Comment: 5 pages, 3 figures
Published: 2004

40. The HERMES Polarized Hydrogen and Deuterium Gas Target in the HERA Electron Storage Ring

Author: G. Graw, Y. Salomatin, V. A. Gapienko, N. Bianchi, V. A. Korotkov, K. Sinram, L. De Nardo, M. Ehrenfried, R. De Leo, B. Hommez, W. Haeberli, Y. Van Haarlem, R. Seidl, J. G. Rubin, L. Lapikás, M. Bouwhuis, H. Böttcher, L. Rubacek, J. Seele, P. Tait, Michael Tytgat, E. Avetissian, K. Garrow, H. Ohsuga, Dirk Ryckbosch, A. Airapetian, Klaus Rith, G. Elbakian, W. Augustyniak, S. Lu, D. Heesbeen, B. Zihlmann, L. A. Linden-Levy, S. Taroian, Adel Terkulov, H. E. Jackson, V. G. Krivokhijine, H. P. Blok, A. Borissov, Y. Miyachi, J. Wendland, C. Baumgarten, W. Sommer, A. Reischl, F. Stinzing, Wolfgang Lorenzon, B. Maiheu, A. Rostomyan, A. Avetissian, D. H. Potterveld, Z. Akopov, G. Iarygin, J. Stewart, A. Brüll, C. Hadjidakis, Bo-Qiang Ma, R. Mussa, Ivana Hristova, G. Schnell, C. A. Miller, P. Bailey, J. Wilbert, P. E. Reimer, Rezo Shanidze, M. Henoch, G. Gapienko, Arne Vandenbroucke, G. van der Steenhoven, V. Vikhrov, Manuella Vincter, A. Nagaitsev, Michel Vetterli, A. Fantoni, E. De Sanctis, V. Kozlov, A. Laziev, Riccardo Fabbri, M. Statera, Hidekazu Tanaka, D. Reggiani, W.H.A. Hesselink, A. Borysenko, G. Ciullo, K. P. Schüler, P.F. Dalpiaz, N. Koch, B. Braun, T. Kobayashi, N. Akopov, O. Grebeniouk, Z. Ye, Y. Mao, P. Lenisa, V. Gharibyan, J. J. M. Steijger, Michael Düren, A. Trzcinski, J. Volmer, M. Stancari, T. Wise, C. Schill, A. Jgoun, Y. X. Ye, A. Ivanilov, A. Fechtchenko, C. Vogel, D. Balin, O. Mikloukho, M. Beckmann, W.-D. Nowak, A. R. Reolon, C. Shearer, Hasko Stenzel, C. Riedl, L. Felawka, B. Seitz, M. Amarian, E. Nappi, K. Hafidi, V. Mexner, I.A. Savin, L. Lagamba, V. Muccifora, U. Elschenbroich, M. Demey, P. Zupranski, P. Di Nezza, H. Kolster, Y. Holler, K. Oganessyan, P. B. van der Nat, I. M. Gregor, N. Meyners, G. Rosner, A. Osborne, Ralf Hertenberger, T. A. Shibata, M. Hartig, G.P. Capitani, Andrey V. Izotov, R.O. Avakian, M. Hoek, D. Hasch, B. Marianski, G.R. Court, G. V. Ybeles Smit, M. Capiluppi, B. Tchuiko, M. Kopytin, A. Nass, S. Frullani, P. Liebing, N. Pickert, E. Devitsin, J. Lu, A. Kisselev, S. Yen, Ralf Kaiser, E. Steffens, A. Hillenbrand, G. Gavrilov, M. Contalbrigo, Martin Raithel, T. Chen, E. C. Aschenauer, V. Shutov, I. Sanjiev, Naomi C R Makins, H. Marukyan, Houbing Lu, S. Belostotski, A. Andrus, V. Bryzgalov, M. Negodaev, F. Garibaldi, Sihui Wang, A. Elalaoui-Moulay, Frank Ellinghaus, E. R. Kinney, Y. Naryshkin, B. Krauss, (Astro)-Particles Physics, and Photo Conversion Materials
Subjects: 29.25.Pj, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Hydrogen, Atomic Physics (physics.atom-ph), chemistry.chemical_element, FOS: Physical sciences, 07.60.F, Electron, 01 natural sciences, Physics - Atomic Physics, NO, 07.77, 29.25.-t, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Physics::Atomic Physics, 010306 general physics, Instrumentation, Physics, 67.65, 010308 nuclear & particles physics, DESY, HERA, Instrumentation and Detectors (physics.ins-det), Polarization (waves), 29.25.P, chemistry, Deuterium, Cathode ray, Atomic physics, Nucleon
Abstract: The HERMES hydrogen and deuterium nuclear-polarized gas targets have been in use since 1996 with the polarized electron beam of HERA at DESY to study the spin structure of the nucleon. Polarized atoms from a Stern-Gerlach Atomic Beam Source are injected into a storage cell internal to the HERA electron ring. Atoms diffusing from the center of the storage cell into a side tube are analyzed to determine the atomic fraction and the atomic polarizations. The atoms have a nuclear polarization, the axis of which is defined by an external magnetic holding field. The holding field was longitudinal during 1996-2000, and was changed to transverse in 2001. The design of the target is described, the method for analyzing the target polarization is outlined, and the performance of the target in the various running periods is presented. © 2004 Elsevier B.V. All rights reserved.
Published: 2004
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41. Evidence for a narrow |S|=1 baryon state at a mass of 1528 MeV in quasi-real photoproduction

Author: J. Stewart, A. Brüll, Ralf Hertenberger, W.H.A. Hesselink, J. Lu, S. Yen, K. Garrow, Y. Salomatin, Z. Ye, L. A. Linden-Levy, C. A. Miller, B. Hommez, Wouter Deconinck, C. Shearer, Ralf Kaiser, P. Zupranski, A. Elalaoui-Moulay, Frank Ellinghaus, E. Steffens, A. Jgoun, Ingrid-Maria Gregor, H. P. Blok, W. Augustyniak, G. Ciullo, E. R. Kinney, G. Gavrilov, U. Elschenbroich, B. Marianski, Wolfgang Lorenzon, J. Ely, V. Mexner, N. Meyners, G. Rosner, M. Ehrenfried, R. De Leo, A. Fantoni, A. Tkabladze, P. B. van der Nat, H. Y. Lu, M. Contalbrigo, B. D. Fox, Y. Naryshkin, Dirk Ryckbosch, B. Zihlmann, K. P. Schüler, Jeffrey Brack, Katerina Lipka, Martin Raithel, W.-D. Nowak, C. Riedl, T. Chen, E. C. Aschenauer, G. Schnell, P.F. Dalpiaz, V. Shutov, M. Vogt, I. Sanjiev, K. Hafidi, M. Statera, Hasko Stenzel, A. Kisselev, H. E. Jackson, Michael Tytgat, Naomi C R Makins, F. Masoli, E. Nappi, A. Nagaitsev, D. Gaskell, A. Airapetian, D. Balin, O. Mikloukho, A. Hillenbrand, G. Iarygin, S. Belostotski, E. De Sanctis, V. Gharibyan, V. Bryzgalov, V. G. Krivokhijine, S. Potashov, K. Oganessyan, J. Wilbert, H. Zohrabian, F. Garibaldi, A. Fechtchenko, Michel Vetterli, R. Seidl, A. Borissov, Arne Vandenbroucke, G. Graw, S. Taroian, M. Bouwhuis, H. Böttcher, P. Lenisa, A. R. Reolon, A. Laziev, Riccardo Fabbri, V. A. Gapienko, C. Vogel, A. Andrus, A. Trzcinski, D. Reggiani, F. Stinzing, N. Akopov, N. Bianchi, V. V. Ammosov, H. Marukyan, R. Shanidze, Y. X. Ye, P. E. Reimer, P. Tait, M. Negodaev, S. Frullani, X. R. Lu, Bo-Qiang Ma, V. Kozlov, L. Lapikás, B. Krauss, V. Muccifora, P. Liebing, Erika Garutti, U. Stosslein, M. Hoek, M. Henoch, T. A. Shibata, E. Avetissian, V. A. Korotkov, J. G. Rubin, N. Pickert, R.O. Avakian, Xun Chen, J. Seele, S. Bernreuther, O. Grebeniouk, Z. Akopov, E. Devitsin, B. Tchuiko, M. Kopytin, S. Lu, Hidekazu Tanaka, A. Nass, Adel Terkulov, V. Baturin, V. Vikhrov, Manuella Vincter, H. C. Chiang, G. Elbakian, P. Bailey, Andrey V. Izotov, G.P. Capitani, D. Hasch, B. Maiheu, Y. Mao, G. V. Ybeles Smit, L. G. Greeniaus, B. Seitz, C. Weiskopf, L. Felawka, M. Amarian, L. Lagamba, P. Di Nezza, G. Gapienko, M. C. Simani, Y. Miyachi, J. Wendland, D. H. Potterveld, H. Ohsuga, A. Rostomyan, A. Avetissian, K. Sinram, L. De Nardo, J. J. M. Steijger, Michael Düren, M. Stancari, A. Reischl, C. Schill, M. Beckmann, J. Volmer, A. Ivanilov, Y. Holler, G. van der Steenhoven, M. Hartig, A. Borysenko, W. Yu, I.A. Savin, Andreas Schäfer, Klaus Rith, D. Heesbeen, and L. Rubacek
Subjects: Nuclear and High Energy Physics, Particle physics, Nuclear Theory, FOS: Physical sciences, 01 natural sciences, NO, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Invariant mass, 12.39.Mk, 13.60.-r, 13.60.Rj, 14.20.-c, 010306 general physics, Nuclear Experiment, Physics, Isovector, 010308 nuclear & particles physics, State (functional analysis), Pentaquark, Baryon, Deuterium, Exotic baryon, Mass spectrum, High Energy Physics::Experiment
Abstract: Evidence for a narrow baryon state is found in quasi-real photoproduction on a deuterium target through the decay channel p K^0_S --> p pi^+ pi^-. A peak is observed in the p K^0_S invariant mass spectrum at 1528 +/- 2.6 (stat) +/-2.1 (syst) MeV. Depending on the background model,the naive statistical significance of the peak is 4--6 standard deviations and its width may be somewhat larger than the experimental resolution of sigma=4.3 -- 6.2 MeV. This state may be interpreted as the predicted S=+1 exotic Theta^{+}(uuddbar(s)) pentaquark baryon. No signal for an hypothetical Theta^{++} baryon was observed in the pK^+ invariant mass distribution. The absence of such a signal indicates that an isotensor Theta is excluded and an isovector Theta is unlikely., 8 pages, 4 figures
Published: 2003

42. Q2Dependence of Nuclear Transparency for Exclusiveρ0Production

Author: I. Brunn, A. Kisselev, J. Wilbert, A. Nagaitsev, U. Stosslein, L. Lagamba, Z. Akopov, V. A. Korotkov, Michel Vetterli, A. Laziev, V. Gapienko, P. E. Reimer, M. Henoch, B. D. Fox, B. Zihlmann, Y. Miyachi, M. Stancari, T. Wise, J. Wendland, W. Augustyniak, G. van der Steenhoven, N. Akopov, G. Schnell, D. Hasch, K. Königsmann, V. Baturin, B. Hommez, M. Beckmann, D. H. Potterveld, H. P. Blok, Alessandra Fantoni, S. Tessarin, S. Yoneyama, T. Lindemann, K. Hafidi, H. Kolster, H. Ohsuga, G. Elbakian, G. Graw, Wolfgang Lorenzon, S. Bernreuther, A. Tkabladze, A. Elalaoui-Moulay, Frank Ellinghaus, Dirk Ryckbosch, R. Fabbri, B. Tchuiko, M. Kopytin, T. A. Shibata, A. Nass, S. Podiatchev, A. Rostomyan, R.O. Avakian, E. R. Kinney, A. R. Reolon, A. Avetissian, A. Jgoun, B. Seitz, A. Schwind, P. Lenisa, J. Seibert, K. Sinram, E. Devitsin, L. De Nardo, A. Trzcinski, G. Gapienko, O. Grebeniouk, P. B. van der Nat, D. Reggiani, M. Vogt, Y. Naryshkin, V. Gharibyan, V. V. Ammosov, K. Oganessyan, M. Ehrenfried, A. Hillenbrand, E. De Sanctis, V. Vikhrov, Manuella Vincter, Franco Garibaldi, R. De Leo, V. A. Kozlov, Klaus Rith, D. Heesbeen, M. Bouwhuis, J. J. M. Steijger, Michael Düren, L. G. Greeniaus, C. Weiskopf, H. Böttcher, H. E. Jackson, S. Belostotski, V. G. Krivokhijine, Eugenio Nappi, Erika Garutti, C. Baumgarten, A. Andrus, G. Iarygin, L. Felawka, I.A. Savin, B. Krauss, G. P. Capitani, H. Marukyan, R. Van de Vyver, C. Scarlett, G.R. Court, J. Franz, Andreas Schäfer, A. Terkulov, K. Negodaeva, M. Amarian, M. Hartig, S. Potashov, H. Zohrabian, Hidekazu Tanaka, U. Elschenbroich, A. Airapetian, P. Bailey, G. M. Urciuoli, P. Di Nezza, J. Stewart, P. Liebing, A. Brüll, Ralf Hertenberger, W.H.A. Hesselink, P. Zupranski, H. C. Chiang, N. Meyners, G. Rosner, L. Lapikás, K. P. Schüler, A. Borissov, E. Avetissian, Nicola Bianchi, O. Mikloukho, A. Reischl, W. Haeberli, G. Ciullo, Christian Schill, Salvatore Frullani, Valeria Muccifora, P. F. Dalpiaz, Y. Holler, Jeffrey Brack, M. C. Simani, J. Volmer, A. Fechtchenko, Michael Tytgat, S. Taroian, Y. Gärber, E. Thomas, R. Shanidze, M. Contalbrigo, Martin Raithel, E. C. Aschenauer, V. Shutov, M. Statera, I. Sanjiev, Andrey V. Izotov, G. Orlandi, Naomi C R Makins, C. A. Miller, J. Ely, D. Gaskell, F. Menden, S. Yen, Ralf Kaiser, E. Steffens, G. Gavrilov, F. Masoli, J. Visser, V. Mexner, and W.-D. Nowak
Subjects: HERMES experiment, Physics, Nuclear reaction, Particle physics, Meson, Nuclear Theory, Hadron, General Physics and Astronomy, Virtual particle, Coherence length, Nuclear physics, Nuclear transparency, High Energy Physics::Experiment, Nuclear Experiment, Nucleon
Abstract: Exclusive coherent and incoherent electroproduction of the rho(0) meson from H-1 and N-14 targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to the lifetime of hadronic fluctuations of the virtual photon, and squared four-momentum of the virtual photon (-Q(2)). The ratio of N-14 to H-1 cross sections per nucleon, called nuclear transparency, was found to increase (decrease) with increasing l(c) for coherent (incoherent) rho(0) electroproduction. For fixed l(c), a rise of nuclear transparency with Q(2) is observed for both coherent and incoherent rho(0) production, which is in agreement with theoretical calculations of color transparency.
Published: 2003

43. A gas analyzer for the internal polarized target of the HERMES experiment

Author: G. Ciullo, P. Tait, G.R. Court, M. Stancari, W. Haeberli, P. Lenisa, Ralf Hertenberger, C. Baumgarten, H. Marukyan, B. Braun, E. Steffens, Klaus Rith, J. Stewart, G. Graw, M Henoch, M. Contalbrigo, A. Nass, N. Koch, P. F. Dalpiaz, M. C. Simani, D. Reggiani, H. Kolster, T. Wise, and J. Stenger
Subjects: HERMES experiment, Physics, Nuclear and High Energy Physics, Hydrogen, Atoms in molecules, chemistry.chemical_element, DESY, Polarization (waves), Gas analyzer, 29.25.P, 07.77, chemistry, Deuterium, Atomic physics, Nucleon, Instrumentation
Abstract: A gas analyzer has been developed for the internal polarized target of the HERMES experiment at DESY in order to determine the relative amount of atomic and molecular hydrogen or deuterium in a gas sample. The precise quantitative knowledge of this ratio is crucial because the nucleons in atoms and molecules contribute differently to the average nuclear polarization of the target gas. A new calibration technique used to derive the relative sensitivity to atoms and molecules is presented. As an example, it is shown how the gas analyzer is used within the HERMES environment to divide the molecules in the gas sample into an unpolarized and a potentially polarized fraction.
Published: 2003

44. The Transverse Polarized Target of the HERMES Experiment

Author: D. Reggiani
Subjects: HERMES experiment, Physics, Nuclear physics, Momentum, Transverse plane, High Energy Physics::Experiment, HERA, Nucleon, Beam (structure), Storage ring, Lepton
Abstract: The HERMES polarized hydrogen/deuterium internal target is operational since 1996 in the HERA lepton storage ring. In this contribution the target setup is described and an overview of the performance achieved during 2000 data taking is given. In 2001 the direction of the target holding field has been switched from longitudinal to transverse, with respect to the momentum of the lepton beam. The studies carried out in order to accomplish this result are presented. A critical aspect the new HERMES target is the possible nucleon depolarization caused by the interaction of the transient magnetic fields generated by the beam with the polarized nucleons of the target.
Published: 2003

45. Quark fragmentation to π±, π0, K±, p and p_bar in the nuclear environment

Author: R. Fabbri, Katerina Lipka, A. Fechtchenko, T. A. Shibata, M. Statera, K. P. Schüler, R.O. Avakian, E. Nappi, Dirk Ryckbosch, C. Shearer, C. Vogel, B. Seitz, E. Devitsin, O. Mikloukho, A. R. Reolon, J. Seele, S. Bernreuther, J. Wilbert, L. Lapikás, U. Elschenbroich, P. B. van der Nat, Adel Terkulov, Arne Vandenbroucke, H. E. Jackson, V. G. Krivokhijine, G. Gapienko, S. Belostotski, V. Bryzgalov, Y. Salomatin, W. Augustyniak, A. Tkabladze, F. Garibaldi, C. Baumgarten, Ralf Hertenberger, E. Avetissian, H. C. Chiang, B. D. Fox, Y. Holler, V. A. Korotkov, K. Sinram, L. De Nardo, G. Schnell, M. C. Simani, M. Stancari, M. Contalbrigo, V. Vikhrov, W.H.A. Hesselink, S. Potashov, P. E. Reimer, H. Zohrabian, Martin Raithel, Manuella Vincter, E. C. Aschenauer, V. Shutov, M. Henoch, Jeffrey Brack, H. Tanaka, K. Königsmann, B. Krauss, M. Hoek, V. Baturin, I. Sanjiev, A. Airapetian, Hasko Stenzel, C. Scarlett, V. Gharibyan, G. Graw, M. Ehrenfried, Naomi C R Makins, D. Gaskell, R. De Leo, P. Liebing, K. Hafidi, G. Elbakian, A. Borissov, L. Rubacek, M. Vogt, B. Tchuiko, M. Kopytin, J. Lu, A. Nass, B. Hommez, S. Yen, A. Elalaoui-Moulay, Frank Ellinghaus, E. R. Kinney, G. V. Ybeles Smit, R. Seidl, E. Garutti, A. Hillenbrand, V. Mexner, A. Schwind, Ralf Kaiser, Y. Naryshkin, B. Marianski, Andrey V. Izotov, E. De Sanctis, M. Bouwhuis, H. Ohsuga, H. Böttcher, E. Steffens, J. Stewart, A. Brüll, G. Gavrilov, D. Hasch, Y. Miyachi, J. Wendland, K. Oganessyan, A. Laziev, W.-D. Nowak, Michael Tytgat, A. Ivanilov, L. Felawka, V. Gapienko, B. Maiheu, P. Tait, D. H. Potterveld, M. Amarian, C. A. Miller, K. Garrow, J. Ely, A. Rostomyan, A. Avetissian, A. Kisselev, L. Lagamba, A. Fantoni, A. Reischl, S. Taroian, N. Bianchi, A. Nagaitsev, J. J. M. Steijger, Michael Düren, P. Di Nezza, G. Iarygin, Michel Vetterli, G. Ciullo, Christian Schill, H. Marukyan, J. Franz, B. Zihlmann, R. Shanidze, V. Kozlov, S. Frullani, N. Pickert, N. Akopov, O. Grebeniouk, P. F. Dalpiaz, G.P. Capitani, H. P. Blok, P. Zupranski, Wolfgang Lorenzon, V. V. Ammosov, J. Volmer, F. Masoli, N. Meyners, G. Rosner, U. Stosslein, Z. Akopov, G. van der Steenhoven, T. Lindemann, L. G. Greeniaus, C. Weiskopf, A. Borysenko, Klaus Rith, D. Heesbeen, I.A. Savin, Andreas Schäfer, P. Lenisa, A. Trzcinski, D. Reggiani, V. Muccifora, M. Hartig, M. Negodaev, P. Bailey, I. M. Gregor, A. Jgoun, C. Riedl, M. Beckmann, and A. Andrus
Subjects: HERMES experiment, Quark, Nuclear and High Energy Physics, Meson, Nuclear Theory, Hadron, chemistry.chemical_element, 13.87.Fh, 13.60.-r, 14.20.-c, 14.40.-n, 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, Multiplicity (chemistry), Nuclear Experiment, 010306 general physics, Physics, 010308 nuclear & particles physics, Krypton, Baryon, Deuterium, chemistry, High Energy Physics::Experiment, Atomic physics
Abstract: The influence of the nuclear medium on lepto-production of hadrons was studied in the HERMES experiment at DESY in semi-inclusive deep-inelastic scattering of 27.6 GeV positrons off deuterium, nitrogen and krypton targets. The differential multiplicity for krypton relative to that of deuterium has been measured for the first time for various identified hadrons (π+, π−, π0, K+, K−, p and p ) as a function of the virtual photon energy ν, the fraction z of this energy transferred to the hadron, and the hadron transverse momentum squared pt2. The multiplicity ratio is strongly reduced in the nuclear medium at low ν and high z, with significant differences among the various hadrons. The distribution of the hadron transverse momentum is broadened towards high pt2 in the nuclear medium, in a manner resembling the Cronin effect previously observed in collisions of heavy ions and protons with nuclei.
Published: 2003

46. The HERMES polarized atomic beam source

Author: J. Stewart, W. Haeberli, G. Graw, G. Ciullo, Ralf Hertenberger, A. Golendukhin, E. Steffens, D. Reggiani, P. Lenisa, B. Braun, Martin Raithel, A. Nass, P.F. Dalpiaz, N. Koch, M. Henoch, C. Baumgarten, G.R. Court, Klaus Rith, M. C. Simani, H. Kolster, P. Tait, T. Wise, and H. Marukyan
Subjects: HERMES experiment, Physics, Nuclear and High Energy Physics, polarization, Atomic beam, internal target, 67.65.+z, Hydrogen, Period (periodic table), 29.25.−t, chemistry.chemical_element, atomic beam source, Polarization (waves), high frequency transitions, hydrogen, deuterium, 29.25.Pj Polarized and other targets, 07.77.Gx, Sextupole magnet, Deuterium, chemistry, Atomic physics, Instrumentation, Hyperfine structure
Abstract: The HERMES atomic beam source is used to provide nuclear polarized hydrogen or deuterium atoms for the HERMES target. The setup including the dissociator, the sextupole magnet system and the high-frequency transitions is described. Measurements of the hydrogen intensity of up to 6.4×10 16 atoms / s in two hyperfine substates and of the deuterium intensity of up to 5.8×10 16 atoms / s in three hyperfine substates are presented. A degree of dissociation of 92.8% for H (94.5% for D) at the entrance of the storage cell and a nuclear polarization of around 0.97 (H) and 0.92 (D) have been found constant within a couple of percent over the whole running period of the HERMES experiment.
Published: 2003

47. Measurements of atomic recombination in the HERMES polarized hydrogen and deuterium storage cell target

Author: M. Henoch, P. Lenisa, P. F. Dalpiaz, G.R. Court, G. Ciullo, Klaus Rith, D. Reggiani, C. Baumgarten, H. Kolster, G. Graw, T. Wise, A. Nass, W. Haeberli, J. Stewart, Ralf Hertenberger, A. Golendukhin, S.P. Pod'yachev, E. Steffens, B. Braun, and N. Koch
Subjects: HERMES experiment, Physics, 29.25.Pj, Nuclear and High Energy Physics, Reaction mechanism, 67.65.+z, Hydrogen, 29.25.−t, chemistry.chemical_element, Atmospheric temperature range, Polarized targets, Detection of atomic beams, 07.77.Gx, Deuterium, chemistry, Atom, Atomic physics, Polarization (electrochemistry), Instrumentation, Recombination
Abstract: The use ofstorage cells has become a standard technique f internal gas targets in storage rings. In case ofpolarized hydrogen or deuterium targets, recombination ofthe atoms occurs during the collisions ofthe atoms with the walls of the storage cell and may lead to a reduction ofthe target polarization. In this paper, we present measurements of recombination at the polarized internal hydrogen and deuterium gas target ofthe HERMES experiment in the years 1997–1999 within a temperature range of35–250 K : The underlying reaction mechanisms will be discussed with respect to the measured temperature and gas density dependence ofsurf ace recombination. Special attention is paid to the influence ofwater on recombination. These dependencies can be consistently described by a combination ofthree reaction mechanisms. The first one, dominating at temperatures above 120 K; is an activated Eley–Rideal reaction. A second process dominating below 100 K in case ofnew storage cells, is interpreted as a tunneling reaction between a physisorbed state and an atom chemically bound on the surface. When the storage cell coating is aged by the influence of the HERA positron beam
Published: 2003

48. Beam induced depolarizing resonances in the HERMES hydrogen/deuterium target

Author: D. Reggiani
Subjects: Physics, Nuclear physics, Deuterium, Physics::Accelerator Physics, DESY, HERA, Atomic physics, Spin (physics), Nucleon, Beam (structure), Storage ring, Magnetic field
Abstract: Nuclear polarized hydrogen and deuterium gas targets employed in high‐energy storage rings have become an important tool in the study of spin dependent processes in nuclear and particle physics. A severe problem in the use of this type of targets in bunched beams is the nucleon depolarization which can take place when the transient magnetic fields generated by the beam interact with the polarized nucleons and change their spin state. These depolarization process can be studied experimentally with a fully operational target installed in a storage ring. This is the case of the HERMES target (at HERA ‐ DESY) where this effects have been extensively studied in the past with H longitudinally polarized with respect to beam axis. In the presentation, besides of the results related to the past longitudinal running, the new problematics related to the present running with transersally polarized H will be addressed.
Published: 2003

49. Q2 dependence of nuclear transparency for exclusive rho0 production

Author: A, Airapetian, N, Akopov, Z, Akopov, M, Amarian, V V, Ammosov, A, Andrus, E C, Aschenauer, W, Augustyniak, R, Avakian, A, Avetissian, E, Avetissian, P, Bailey, V, Baturin, C, Baumgarten, M, Beckmann, S, Belostotski, S, Bernreuther, N, Bianchi, H P, Blok, H, Böttcher, A, Borissov, M, Bouwhuis, J, Brack, A, Brüll, I, Brunn, G P, Capitani, H C, Chiang, G, Ciullo, M, Contalbrigo, G R, Court, P F, Dalpiaz, R, De Leo, L, De Nardo, E, De Sanctis, E, Devitsin, P, Di Nezza, M, Düren, M, Ehrenfried, A, Elalaoui-Moulay, G, Elbakian, F, Ellinghaus, U, Elschenbroich, J, Ely, R, Fabbri, A, Fantoni, A, Fechtchenko, L, Felawka, B, Fox, J, Franz, S, Frullani, Y, Gärber, G, Gapienko, V, Gapienko, F, Garibaldi, E, Garutti, D, Gaskell, G, Gavrilov, V, Gharibyan, G, Graw, O, Grebeniouk, L G, Greeniaus, W, Haeberli, K, Hafidi, M, Hartig, D, Hasch, D, Heesbeen, M, Henoch, R, Hertenberger, W H A, Hesselink, A, Hillenbrand, Y, Holler, B, Hommez, G, Iarygin, A, Izotov, H E, Jackson, A, Jgoun, R, Kaiser, E, Kinney, A, Kisselev, K, Königsmann, H, Kolster, M, Kopytin, V, Korotkov, V, Kozlov, B, Krauss, V G, Krivokhijine, L, Lagamba, L, Lapikás, A, Laziev, P, Lenisa, P, Liebing, T, Lindemann, W, Lorenzon, N C R, Makins, H, Marukyan, F, Masoli, F, Menden, V, Mexner, N, Meyners, O, Mikloukho, C A, Miller, Y, Miyachi, V, Muccifora, A, Nagaitsev, E, Nappi, Y, Naryshkin, A, Nass, K, Negodaeva, W-D, Nowak, K, Oganessyan, H, Ohsuga, G, Orlandi, S, Podiatchev, S, Potashov, D H, Potterveld, M, Raithel, D, Reggiani, P, Reimer, A, Reischl, A R, Reolon, K, Rith, G, Rosner, A, Rostomyan, D, Ryckbosch, I, Sanjiev, I, Savin, C, Scarlett, A, Schäfer, C, Schill, G, Schnell, K P, Schüler, A, Schwind, J, Seibert, B, Seitz, R, Shanidze, T-A, Shibata, V, Shutov, M C, Simani, K, Sinram, M, Stancari, M, Statera, E, Steffens, J J M, Steijger, J, Stewart, U, Stösslein, H, Tanaka, S, Taroian, B, Tchuiko, A, Terkulov, S, Tessarin, E, Thomas, A, Tkabladze, A, Trzcinski, M, Tytgat, G M, Urciuoli, P, Van Der Nat, G, Van Der Steenhoven, R, Van De Vyver, M C, Vetterli, V, Vikhrov, M G, Vincter, J, Visser, M, Vogt, J, Volmer, C, Weiskopf, J, Wendland, J, Wilbert, T, Wise, S, Yen, S, Yoneyama, B, Zihlmann, H, Zohrabian, and P, Zupranski
Abstract: Exclusive coherent and incoherent electroproduction of the rho(0) meson from 1H and 14N targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to the lifetime of hadronic fluctuations of the virtual photon, and squared four-momentum of the virtual photon (-Q2). The ratio of 14N to 1H cross sections per nucleon, called nuclear transparency, was found to increase (decrease) with increasing l(c) for coherent (incoherent) rho(0) electroproduction. For fixed l(c), a rise of nuclear transparency with Q2 is observed for both coherent and incoherent rho(0) production, which is in agreement with theoretical calculations of color transparency.
Published: 2002

50. Evidence for Quark-Hadron Duality in the Proton Spin Asymmetry $A_1$

Author: Michel Vetterli, N. Akopov, F. Menden, B. Hommez, Klaus Rith, D. Heesbeen, L. G. Greeniaus, E. De Sanctis, U. Stosslein, Franco Garibaldi, C. A. Miller, S. Yen, C. Weiskopf, L. Lagamba, A. Jgoun, B. D. Fox, B. Zihlmann, Z. Akopov, J. Ely, Ralf Kaiser, G. Schnell, A. Rostomyan, A. R. Reolon, A. Avetissian, G. M. Urciuoli, J. Stewart, E. Steffens, E. Kotik, A. Brüll, G. Hofman, W. Haeberli, G. Gavrilov, V. V. Ammosov, F. Masoli, J. Visser, F. Sato, A. Reischl, K. Negodaeva, A. Fechtchenko, G. S. Kyle, I.A. Savin, K. Sinram, H. J. Bulten, L. De Nardo, B. Tipton, K. P. Schüler, U. Elschenbroich, M. Amarian, R. Van de Vyver, G. Ciullo, H. P. Blok, S. Yoneyama, Evaristo Cisbani, Valeria Muccifora, V. Gharibyan, L. Felawka, G. Iarygin, Christian Schill, S. Brauksiepe, B. Krauss, E. Avetissian, Nicola Bianchi, O. Mikloukho, Wolfgang Lorenzon, S. Potashov, H. Zohrabian, C. Scarlett, P. Bailey, H. Marukyan, G. P. Capitani, G.R. Court, Axel Maas, Andreas Schäfer, Eugenio Nappi, J. Franz, Andrey V. Izotov, A. Airapetian, P. Kitching, G. van der Steenhoven, J. Wendland, Michael Tytgat, P.W. Green, D. H. Potterveld, M. Bouwhuis, H. Böttcher, P. Di Nezza, F.H. Heinsius, Frank Ellinghaus, S. Taroian, V. Mexner, T. Lindemann, E. R. Kinney, V. Rappoport, P. Liebing, T. Wise, V. A. Korotkov, A. Schwind, R. Shanidze, S. Podiatchev, F. Schmidt, Martin Raithel, R. J. Holt, Y. Naryshkin, M. Beckmann, J. F. J. van den Brand, E. C. Aschenauer, V. Shutov, O. Grebeniouk, M. Stancari, Salvatore Frullani, J. J. M. Steijger, I. Sanjiev, P. F. Dalpiaz, K. Königsmann, Michael Düren, G. Orlandi, Naomi C R Makins, V. Baturin, S. Tessarin, P. Lenisa, J. Seibert, V. A. Kozlov, B. W. Filippone, D. Reggiani, J. Volmer, G. Elbakian, S. Belostotski, S. Bernreuther, Adel Terkulov, Yasuhiro Sakemi, M. Ehrenfried, R. De Leo, Erika Garutti, Y. Holler, V. Vikhrov, M. C. Simani, Manuella Vincter, Y. Gärber, P.K.A. de Witt Huberts, M. Hartig, E. Thomas, H. Avakian, Ralf Hertenberger, W.H.A. Hesselink, A. Gute, Dirk Ryckbosch, Othmane Bouhali, P. E. Reimer, M. Henoch, K. Suetsugu, R. Fabbri, T. A. Shibata, R.O. Avakian, H. E. Jackson, V. G. Krivokhijine, E. Devitsin, C. Baumgarten, N. Meyners, A. Borissov, K. Hafidi, V. A. Gapienko, H. Kolster, Alessandra Fantoni, G. Graw, M. Kopytin, A. Nass, Peter Jung, B. Seitz, D. Hasch, A. Laziev, K. Oganessyan, J. Wilbert, W.-D. Nowak, I. Brunn, A. Kisselev, H. Fischer, Jeffrey Brack, A. Nagaitsev, (Astro)-Particles Physics, and Photo Conversion Materials
Subjects: Quark, Particle physics, media_common.quotation_subject, Hadron, Nuclear Theory, FOS: Physical sciences, General Physics and Astronomy, Inelastic scattering, 01 natural sciences, Asymmetry, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Q(2)-DEPENDENCE, 0103 physical sciences, Proton spin crisis, SCATTERING, 010306 general physics, Nuclear Experiment, media_common, Physics, 010308 nuclear & particles physics, SUM, CONSTRAINTS, Deep inelastic scattering, 3. Good health, Baryon, POLARIMETER, NEUTRON, High Energy Physics::Experiment, POLARIZED HYDROGEN, Nucleon, RESONANCES, BEHAVIOR
Abstract: Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry $A_1$. Longitudinally polarised positrons were scattered off a longitudinally polarised hydrogen target for values of $Q^2$ between 1.2 and 12 GeV$^2$ and values of $W^2$ between 1 and 4 GeV$^2$. The average double-spin asymmetry in the nucleon resonance region is found to agree with that measured in deep-inelastic scattering at the same values of the Bjorken scaling variable $x$. This finding implies that the description of $A_1$ in terms of quark degrees of freedom is valid also in the nucleon resonance region for values of $Q^2$ above 1.6 GeV$^2$., 5 pages, 1 eps figure, table added, new references added, in print in Phys. Rev. Lett
Published: 2002

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