798 results on '"Mkrtchyan H"'
Search Results
202. EP419 Efficiency of sentinel lymph node detection with indocyanine green in patients with early stage of cervical cancer. Single-institutional experience, n=80
- Author
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Mkrtchyan, H, primary, Ulrikh, E, additional, Mikaya, N, additional, Sidoruk, A, additional, Urmancheeva, A, additional, and Berlev, I, additional
- Published
- 2019
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203. EP258 Long – term outcomes of laparoscopic radical hysterectomy (type III PIVER) for early stage cervical cancer (IA1-IB1 FIGO)
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Berlev, I, primary, Smirnova, O, additional, Sorokin, P, additional, Sorokina, S, additional, Ulrikh, E, additional, Sidoruk, A, additional, Mkrtchyan, H, additional, Ibragimov, Z, additional, Trifanov, Y, additional, Kotiv, H, additional, Lavrinovich, O, additional, Bondarev, N, additional, Mikaya, N, additional, and Urmancheeva, A, additional
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- 2019
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204. EP420 The clinical outcomes of neoadjuvant dose-dense platinum-based chemotherapy in patients with locally-advanced cervical cancer (IB2-IIB FIGO stage)
- Author
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Smirnova, O, primary, Ulrikh, E, additional, Bondarev, N, additional, Petrova, A, additional, Mkrtchyan, H, additional, Lavrinovich, O, additional, Ibragimov, Z, additional, Trifanov, Y, additional, Samus, S, additional, Kotiv, H, additional, Sidoruk, A, additional, Mikaya, N, additional, Urmancheeva, A, additional, and Berlev, I, additional
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- 2019
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- View/download PDF
205. Future hypernuclear program at JLab Hall C
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Nakamura, S.N., Hashimoto, O., Fujii, Y., Tamura, H., Takahashi, T., Maeda, K., Kanda, H., Okayasu, Y., Nomura, H., Matsumura, A., Oyamada, M., Honda, D., Ohtani, A., Kato, F., Watanabe, T., Tsukada, K., Ukai, M., Miura, Y., Yamauchi, H., Kato, S., Sato, Y., Noumi, H., Motoba, T., Tang, L., Baker, O.K., Christy, M., Cole, L., Gueye, P., Keppel, C., Uzzle, A., Yuan, L., Reinhold, J., Markowitz, P., Beckford, B., Carl, M., Gullon, S., Vega, C., Hungerford, Ed.V., Miyoshi, T., Lan, K., Elhayari, N., Klantrains, N., Li, Y., Buhkari, M., Radeniya, S., Carlini, R., Ent, R., Fenker, H., Mack, D., Smith, G., Vulcan, W., Wood, S., Yan, C., Simicevic, N., Wells, S., Gan, L., Ahmidouch, A., Danagoulian, S., Gasparian, A., Dehnhard, D., Elaasar, M., Asaturyan, R., Mkrtchyan, H., Margaryan, A., Stepanyan, S., Tadevosyan, V., Androic, D., Petkovic, T., Planinic, M., Furic, M., Angelescu, T., Likhachev, V.P., and Ahmed, M.
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- 2005
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206. The aerogel threshold Cherenkov detector for the High Momentum Spectrometer in Hall C at Jefferson Lab
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Asaturyan, R., Ent, R., Fenker, H., Gaskell, D., Huber, G.M., Jones, M., Mack, D., Mkrtchyan, H., Metzger, B., Novikoff, N., Tadevosyan, V., Vulcan, W., and Wood, S.
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- 2005
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207. Measurements of Nonsinglet Moments of the Nucleon Structure Functions and Comparison to Predictions from Lattice QCD for Q^{2}=4 GeV^{2}
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Albayrak, I., Mamyan, V., Christy, M. E., Ahmidouch, A., Arrington, J., Asaturyan, A., Bodek, A., Bosted, P., Bradford, R., Brash, E., Bruell, A., Butuceanu, C., Coleman, S. J., Commisso, M., Connell, S. H., Dalton, M. M., Danagoulian, S., Daniel, A., Day, D. B., Dhamija, S., Dunne, J., Dutta, D., Ent, R., Gaskell, D., Gasparian, A., Gran, R., Horn, T., Huang, Liting, Huber, G. M., Jayalath, C., Johnson, M., Jones, M. K., Kalantarians, N., Liyanage, A., Keppel, C. E., Kinney, E., Li, Y., Malace, S., Manly, S., Markowitz, P., Maxwell, J., Mbianda, N. N., McFarland, K. S., Meziane, M., Meziani, Z. E., Mills, G. B., Mkrtchyan, H., Mkrtchyan, A., Mulholland, J., Nelson, J., Niculescu, G., Niculescu, I., Pentchev, L., Puckett, A., Punjabi, V., Qattan, I. A., Reimer, P. E., Reinhold, J., Rodriguez, V. M., Rondon- Aramayo, O., Sakuda, M., Sakumoto, W. K., Segbefia, E., Seva, T., Sick, I., Slifer, K., Smith, G. R., Steinman, J., Solvignon, P., Tadevosyan, V., Tajima, S., Tvaskis, V., Vulcan, W. F., Walton, T., Wesselmann, F. R., Wood, S. A., Ye, Zhihong, and E06-009 Collaboration
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General Physics ,Engineering ,E06-009 Collaboration ,Nuclear Theory ,Physical Sciences ,Nuclear Experiment ,nucl-ex ,nucleon nonsinglet moments ,Mathematical Sciences - Abstract
We present extractions of the nucleon nonsinglet moments utilizing new precision data on the deuteron F_{2} structure function at large Bjorken-x determined via the Rosenbluth separation technique at Jefferson Lab Experimental Hall C. These new data are combined with a complementary set of data on the proton previously measured in Hall C at similar kinematics and world datasets on the proton and deuteron at lower x measured at SLAC and CERN. The new Jefferson Lab data provide coverage of the upper third of the x range, crucial for precision determination of the higher moments. In contrast to previous extractions, these moments have been corrected for nuclear effects in the deuteron using a new global fit to the deuteron and proton data. The obtained experimental moments represent an order of magnitude improvement in precision over previous extractions using high x data. Moreover, recent exciting developments in lattice QCD calculations provide a first ever comparison of these new experimental results with calculations of moments carried out at the physical pion mass, as well as a new approach that first calculates the quark distributions directly before determining moments.
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- 2019
208. COMPASS++/AMBER: Proposal for Measurements at the M2 beam line of the CERN SPS Phase-1: 2022-2024
- Author
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Adams, B, Aidala, C A, Alexeev, G D, Alexeev, M G, Amoroso, A, Andrieux, V, Anfimov, N V, Anosov, V, Antoshkin, A, Augsten, K, Augustyniak, W, Azevedo, C D R, Bade{\l}ek, B, Balestra, F, Ball, M, Barth, J, Beck, R, Berenguer Antequera, J, Bernauer, J C, Bernhard, J, Bodlak, M, Bradamante, F, Bressan, A, B\\\'uchele, M, Burtsev, V E, Butler, C, Chatterjee, C, Chiosso, M, Chumakov, A G, Chung, S U, Cicuttin, A, Connors, M, Contin, A, Correia, P, Crespo, M L, Dalla Torre, S, Dasgupta, S S, Dasgupta, S, Dashyan, N, Denisenko, I, Denisov, O Y, Dhara, L, Donato, F, Donskov, S V, Doshita, N, Dreisbach, C, D\\\'unnweber, W, Dusaev, R R, Dzyuba, A, Efremov, A, Egelhof, P, Elagin, A, Eversheim, P D, Faccioli, P, Faessler, M, Fedotova, J, Finger, M, Fischer, H, Franco, C, Friedrich, J M, Frolov, V, Futch, A, Gautheron, F, Gavrichtchouk, O P, Gerassimov, S, Gevorkyan, S, Ghandilyan, Y, Giarra, J, Gnesi, I, Gorzellik, M, Grasso, A, Gridin, A, Grosse Perdekamp, M, Grube, B, Gushterski, R I, Guskov, A, Hamar, G, von Harrach, D, He, X, Heitz, R, Herrmann, F, Hoffmann, M, Horikawa, N, Huber, S, Inglessi, A, Ilyichev, A, Ishimoto, S, Ivanov, A, Ivanov, N, Iwata, T, Jadhav, M, Jandek, M, Jary, V, Jen, C M, Joosten, R, J\\\'org, P, Juraskova, K, Kabu\ss, E, Kaspar, F, Keller, D, Kerbizi, A, Ketzer, B, Khaustov, G V, Khokhlov, Y A, Kim, M, Kiselev, O, Kisselev, Y, Klein, F, Koivuniemi, J H, Kolosov, V N, Kondo, K, Konorov, I, Konstantinov, V F, Kotzinian, A M, Kouznetsov, O M, Koval, A, Kral, Z, Krinner, F, Kulinich, Y, Kurek, K, Kurjata, R P, Kveton, A, Levorato, S, Lichtenstadt, J, Liu, K, Liu, M X, Longo, R, Lorenzon, W, Losekamm, M J, Lyubovitskij, V E, Maev, E, Maggiora, A, Makarenko, V, Makins, N, Makke, N, Mallot, G K, Maltsev, A, Mamon, S A, Marianski, B, Martin, A, Marukyan, H, Marzec, J, Masi, N, Matou{\v s}ek, J, Matsuda, T, Mattson, G, Meshcheryakov, G V, Meyer, W, Meyer, M, Mikhailov, Y V, Mikhasenko, M, Minot, M, Mitrofanov, E, Miyachi, Y, Moretti, A, Nagaytsev, A, Nigmatkulov, G, Mkrtchyan, A, Mkrtchyan, H, Nov{\'y}, J, Nowak, W D, Nozzoli, F, Nukazuka, G, Olshevsky, A G, Ostrick, M, Panzieri, D, Parsamyan, B, Paul, S, Pekeler, H, Peng, J C, Pe{\v s}ek, M, Pe{\v s}kov\'a, M, Petrov, G, Pierre, N, Menezes, C, Pochodzalla, J, Polyakov, V A, P\\\'{o}schl, T, Pretz, J, Quadrani, L, Quaresma, M, Quintans, C, Raymond, R, Reicherz, G, Reimer, P E, Repond, J, Riedl, C, Ryabchikov, D I, Rybnikov, A, Rychter, A, Rymbekova, A, Salac, R, Samoylenko, V D, Sandacz, A, Sarkar, S, Sarsour, M, Sbrizzai, G, Schmieden, H, Scherrers, S, Selyunin, A, Shin, T, Simon, H, Sinha, L, Slunecka, M, Smolik, J, Srnka, A, Steffen, D, Stolarski, M, Subrt, O, Sulc, M, Sun, X, Suzuki, H, Szabelski, A, Sznajder, P, Tchekhovski, V, Tessaro, S, Tessarotto, F, Thiel, A, Tomsa, J, Tosello, F, Tskhay, V, Uhl, S, Vasilishin, B I, Vassiliev, A, Vauth, A, Veit, B M, Veloso, J, Virius, M, Vorobyev, A, Wagner, M, Wallner, S, Zaremba, K, Zavada, P, Zavertyaev, M, Zemlyanichkina, E, Zhao, Y, Zhuravlev, N, Ziembicki, M, and Zuccon, P
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High Energy Physics::Phenomenology ,Nuclear Theory ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Detectors and Experimental Techniques ,Nuclear Experiment - Abstract
The Compass++/Amber (proto-)collaboration proposes to establish a “New QCD facility at the M2 beam line of the CERN SPS” and perform in phase-1, i.e. starting in the year 2022, three experiments that will use either muons or hadrons delivered by the existing M2 beam line: (1) Proton charge radius measurement using muon-proton elastic scattering, (2) Drell-Yan and J/Psi production experiments using the conventional M2 hadron beam, (3) Measurement of proton-induced antiproton production cross sections for dark matter searches.
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- 2019
209. Polarization analysis of <(p)over bar> produced in pA collisions
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Grzonka, D., Alfs, D., Asaturyan, A., Carmignotto, M., Diermaier, M., Eyrich, W., Gowacz, B., Hauenstein, F., Horn, T., Kilian, K., Lersch, D., Malbrunot-Ettenauer, S., Mkrtchyan, A., Mkrtchyan, H., Moskal, P., Nadel-Turonski, P., Oelert, W., Ritman, J., Sefzick, T., Tadevosyan, V, Widmann, E., Wolke, Magnus, Zhamkochyan, S., Zielinski, M., Zink, A., and Zmeskal, J.
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Subatomär fysik ,Subatomic Physics ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Physics::Atomic Physics ,Nuclear Experiment - Abstract
A quite simple procedure for the generation of a polarized antiproton beam could be worked out if antiprotons are produced with some polarization. In order to investigate this possibility measurements of the polarization of produced antiprotons have been started at a CERN/PS test beam. The polarization will be determined from the asymmetry of the elastic antiproton scattering at a liquid hydrogen target in the CNI region for which the analyzing power is well known. The data are under analysis and an additional measurement is done in 2018. Details on the experiment and the ongoing data analysis will be given.
- Published
- 2019
210. Exclusive $\pi^+$ electroproduction off the proton from low to high-$t$
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Basnet, S., Huber, G. M., Li, W. B., Blok, H. P., Gaskell, D., Horn, T., Aniol, K., Arrington, J., Beise, E. J., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Christy, M. E., Ent, R., Gibson, E., Holt, R. J., Jin, S., Jones, M. K., Keppel, C. E., Kim, W., King, P. M., Kovaltchouk, V., Liu, J., Lolos, G. J., Mack, D. J., Margaziotis, D. J., Markowitz, P., Matsumura, A., Meekins, D., Miyoshi, T., Mkrtchyan, H., Niculescu, I., Okayasu, Y., Pentchev, L., Perdrisat, C., Potterveld, D., Punjabi, V., Reimer, P., Reinhold, J., Roche, J., Sarty, A., Smith, G. R., Tadevosyan, V., Tang, L. G., Tvaskis, V., Volmer, Julia, Vulcan, W., Warren, G., Wood, S. A., Xu, C., and Zheng, X.
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generalized parton distribution ,accelerator ,background ,momentum transfer ,interference ,parton: distribution function ,electroproduction ,Regge ,nonperturbative ,beam: energy ,kinematics ,meson: production ,structure ,Jefferson Lab ,photoproduction - Abstract
Physical review / C covering nuclear physics C100(6), 065204 (2019). doi:10.1103/PhysRevC.100.065204, Background: Measurements of exclusive meson production are a useful tool in the study of hadronic structure. In particular, one can discern the relevant degrees of freedom at different distance scales through these studies. Purpose: To study the transition between nonperturbative and perturbative quantum chromodynamics as the square of four-momentum transfer to the struck proton, −t, is increased. Method: Cross sections for the H1(e,e′π+)n reaction were measured over the −t range of 0.272 to 2.127 GeV2 with limited azimuthal coverage at fixed beam energy of 4.709 GeV, Q2 of 2.4 GeV2, and W of 2.0 GeV at the Thomas Jefferson National Accelerator Facility (JLab) Hall C. Results: The −t dependence of the measured π+ electroproduction cross section generally agrees with prior data from JLab Halls B and C. The data are consistent with a Regge amplitude-based theoretical model but show poor agreement with a generalized parton distribution–based model. Conclusion: The agreement of cross sections with prior data implies small contribution from the interference terms, and the confirmation of the change in t slopes between the low- and high-−t regions previously observed in photoproduction indicates the changing nature of the electroproduction reaction in our kinematic regime., Published by Inst., Woodbury, NY
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- 2019
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211. Comparative Proteomic Profiling of Methicillin‐Susceptible and Resistant Staphylococcus aureus
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Xu, Z., Chen, J., Vougas, K., Shah, A., Shah, H., Misra, R., and Mkrtchyan, H.
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biochemical phenomena, metabolism, and nutrition ,bacterial infections and mycoses - Abstract
Purpose Staphylococcus aureus is a highly successful human pathogen responsible for wide range of infections. In this study, we provide insights into the virulence, pathogenicity, and antimicrobial resistance determinants of methicillin susceptible and methicillin resistant Staphylococcus aureus (MSSA; MRSA) recovered from non‐healthcare environments. Experiment design Three environmental MSSA and three environmental MRSA were selected for proteomic profiling using iTRAQ MS/MS. Gene Ontology (GO) Annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) Pathway Annotation were applied to interpret the functions of the proteins detected. Results 792 proteins were identified in MSSA and MRSA. Comparative analysis of MRSA and MSSA revealed that 8 of out 792 proteins were up‐regulated and 156 were down‐regulated. Proteins that had differences in abundance were predominantly involved in catalytic and binding activity. Among 164 differently abundant proteins, 29 were involved in pathogenesis, antimicrobial resistance, stress response, mismatch repair and cell wall synthesis. Twenty‐two proteins associated with pathogenicity, including spa, sbi, clfA and dlt were up‐regulated in MRSA. Moreover, the up‐regulated pathogenic protein entC2 in MSSA was determined to be a super antigen potentially capable of triggering toxic shock syndrome in the host. Conclusions Enhanced pathogenicity, antimicrobial resistance and stress response were observed in MRSA compared to MSSA.
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- 2019
212. Polarization analysis of $\bar{\rho}$ produced in pA collisions
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Grzonka, D, Alfs, D, Asaturyan, A, Carmignotto, M, Diermaier, M, Eyrich, W, Głowacz, B, Hauenstein, F, Horn, T, Kilian, K, Lersch, D, Malbrunot-Ettenauer, S, Mkrtchyan, A, Mkrtchyan, H, Moskal, P, Nadel-Turonski, P, Oelert, W, Ritman, J, Sefzick, T, Tadevosyan, V, Widmann, E, Wolke, M, Zhamkochyan, S, Zieliński, M, Zink, A, and Zmeskal, J
- Subjects
Physics::Accelerator Physics ,High Energy Physics::Experiment ,Physics::Atomic Physics ,Nuclear Experiment ,Particle Physics - Experiment - Abstract
A quite simple procedure for the generation of a polarized antiproton beam could be worked out if antiprotons are produced with some polarization. In order to investigate this possibility measurements of the polarization of produced antiprotons have been started at a CERN/PS test beam. The polarization will be determined from the asymmetry of the elastic antiproton scattering at a liquid hydrogen target in the CNI region for which the analyzing power is well known. The data are under analysis and an additional measurement is done in 2018. Details on the experiment and the ongoing data analysis will be given.
- Published
- 2019
213. Technical supplement to “Polarization transfer observables in elastic electron-proton scattering at [formula omitted] and [formula omitted]”
- Author
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Puckett, A.J.R., Brash, E.J., Jones, M.K., Luo, W., Meziane, M., Pentchev, L., Perdrisat, C.F., Punjabi, V., Wesselmann, F.R., Afanasev, A., Ahmidouch, A., Albayrak, I., Aniol, K.A., Arrington, J., Asaturyan, A., Baghdasaryan, H., Benmokhtar, F., Bertozzi, W., Bimbot, L., Bosted, P., Boeglin, W., Butuceanu, C., Carter, P., Chernenko, S., Christy, M.E., Cornejo, J.C., Covrig, S., Danagoulian, S., Daniel, A., Davidenko, A., Day, D., Dhamija, S., Dutta, D., Ent, R., Frullani, S., Fenker, H., Frlez, E., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Goncharenko, Y., Hafidi, K., Hamilton, D., Higinbotham, D.W., Hinton, W., Horn, T., Hu, B., Huang, J., Huber, G.M., Jensen, E., Keppel, C., Khandaker, M., King, P., Kirillov, D., Kohl, M., Kravtsov, V., Kumbartzki, G., Li, Y., Mamyan, V., Margaziotis, D.J., Marsh, A., Matulenko, Y., Maxwell, J., Mbianda, G., Meekins, D., Melnik, Y., Miller, J., Mkrtchyan, A., Mkrtchyan, H., Moffit, B., Moreno, O., Mulholland, J., Narayan, A., Nedev, S., Nuruzzaman, Piasetzky, E., Pierce, W., Piskunov, N.M., Prok, Y., Ransome, R.D., Razin, D.S., Reimer, P., Reinhold, J., Rondon, O., Shabestari, M., Shahinyan, A., Shestermanov, K., Širca, S., Sitnik, I., Smykov, L., Smith, G., Solovyev, L., Solvignon, P., Subedi, R., Tomasi-Gustafsson, E., Vasiliev, A., Veilleux, M., Wojtsekhowski, B.B., Wood, S., Ye, Z., Zanevsky, Y., Zhang, X., Zhang, Y., Zheng, X., and Zhu, L.
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- 2018
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214. Drift chamber calibration and particle identification in the P-349 experiment
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Alfs, D., Asaturyan, A., Carmignotto, M., Diermaier, M., Eyrich, W., Glowacz, B., Grzonka, D., Hauenstein, F., Horn, T., Kilian, K., Lersch, D., Malbrunot-Ettenauer, S., Mkrtchyan, A., Mkrtchyan, H., Moskal, P., Nadel-Turonski, P., Oelert, W., Ritman, J., Sefzick, T., Tadevosyan, V, Widmann, E., Wolke, Magnus, Zhamkochyan, S., Zielinski, M., Zink, A., Zmeskal, J., Alfs, D., Asaturyan, A., Carmignotto, M., Diermaier, M., Eyrich, W., Glowacz, B., Grzonka, D., Hauenstein, F., Horn, T., Kilian, K., Lersch, D., Malbrunot-Ettenauer, S., Mkrtchyan, A., Mkrtchyan, H., Moskal, P., Nadel-Turonski, P., Oelert, W., Ritman, J., Sefzick, T., Tadevosyan, V, Widmann, E., Wolke, Magnus, Zhamkochyan, S., Zielinski, M., Zink, A., and Zmeskal, J.
- Abstract
The goal of the P-349 experiment is to test whether 3.5 GeV/c antiprotons produced in high-energy proton-proton collisions are polarized in view of the preparation of a polarized antiproton beam. In this article, we present the details of the ongoing analysis focused on the drift chambers calibration and particle identification with DIRC.
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- 2019
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215. Search for polarized antiproton production
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Grzonka, D., Alfs, D., Asaturyan, A., Carmignotto, M., Diermaier, M., Eyrich, W., Glowacz, B., Hauenstein, F., Horn, T., Kilian, K., Lersch, D., Malbrunot-Ettenauer, S., Mkrtchyan, A., Mkrtchyan, H., Moskal, P., Nadel-Turonski, P., Oelert, W., Ritman, J., Sefzick, T., Tadevosyan, V., Widmann, E., Wolke, Magnus, Zhamkochyan, S., Zielinski, M., Zink, A., Zmeskal, J., Grzonka, D., Alfs, D., Asaturyan, A., Carmignotto, M., Diermaier, M., Eyrich, W., Glowacz, B., Hauenstein, F., Horn, T., Kilian, K., Lersch, D., Malbrunot-Ettenauer, S., Mkrtchyan, A., Mkrtchyan, H., Moskal, P., Nadel-Turonski, P., Oelert, W., Ritman, J., Sefzick, T., Tadevosyan, V., Widmann, E., Wolke, Magnus, Zhamkochyan, S., Zielinski, M., Zink, A., and Zmeskal, J.
- Abstract
The production of antiprotons is studied in view of possible polarization effects as basis for a polarized antiproton beam. If antiprotons are produced with some polarization, a quite simple procedure for the generation of a polarized antiproton beam could be worked out. The experiments are performed at the CERN PS test beam T11 where secondary particles with momenta around 3.5 GeV/c are selected. The polarization analysis is performed by measuring the asymmetry of the elastic (p) over barp-scattering in the Coulomb-nuclear interference region. The detection system includes Cherenkov and tracking detectors for the particle identification and the 3d track reconstruction. Details on the detection system and the status of the analysis are given.
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- 2019
- Full Text
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216. Investigation of Flux-Weighted Average Cross Sections for Reactions on Nb with Bremsstrahlung of LUE-75.
- Author
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Avetisyan, A. E., Avetisyan, R. V., Barseghyan, A. G., Gharibyan, Yu. A., Gyurjinyan, A. V., Dallakyan, R. K., Kerobyan, I. A., and Mkrtchyan, H. A.
- Subjects
BREMSSTRAHLUNG ,GERMANIUM detectors ,ELECTRON accelerators ,LINEAR accelerators ,CROSSES - Abstract
Studies of the cross section of gamma-neutron reactions on the Nb nucleus were carried out on the bremsstrahlung of the linear electron accelerator LUE-75 which is located at the A. Alikhanyan National Science Laboratory (Yerevan Physics Institute). The experiment was done at 30 and 40 MeV bremsstrahlung end-point energies. The reaction cross sections for Nb Nb reactions were measured by the activation method with the spectrometric analysis using the High Purity Germanium detector (HPGe). The values of cross sections for different energies of photon beam were determined using the TALYS 1.95 and EMPIRE 3.2 nuclear codes. The energy distribution of photon spectra was performed using the GEANT4 package. The obtained experimental and theoretical results are compared with the available experimental data of other authors. Good agreement was observed between the theoretical and experimental data. The data on the reaction cross section for Nb Nb were obtained for the first time. [ABSTRACT FROM AUTHOR]
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- 2021
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217. Technical Supplement to 'Polarization Transfer Observables in Elastic Electron-Proton Scattering at Q$^2$ = 2.5, 5.2, 6.8, and 8.5 GeV$^2$'
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Puckett, A.J.R., Brash, E.J., Jones, M.K., Luo, W., Meziane, M., Pentchev, L., Perdrisat, C.F., Punjabi, V., Wesselmann, F.R., Ahmidouch, A., Albayrak, I., Aniol, K.A., Arrington, J., Asaturyan, A., Baghdasaryan, H., Benmokhtar, F., Bertozzi, W., Bimbot, L., Bosted, P., Boeglin, W., Butuceanu, C., Carter, P., Chernenko, S., Christy, E., Commisso, M., Cornejo, J.C., Covrig, S., Danagoulian, S., Daniel, A., Davidenko, A., Day, D., Dhamija, S., Dutta, D., Ent, R., Frullani, S., Fenker, H., Frlez, E., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Goncharenko, Y., Hafidi, K., Hamilton, D., Higinbotham, D.W., Hinton, W., Horn, T., Hu, B., Huang, J., Huber, G.M., Jensen, E., Keppel, C., Khandaker, M., King, P., Kirillov, D., Kohl, M., Kravtsov, V., Kumbartzki, G., Li, Y., Mamyan, V., Margaziotis, D.J., Marsh, A., Matulenko, Y., Maxwell, J., Mbianda, G., Meekins, D., Melnik, Y., Miller, J., Mkrtchyan, A., Mkrtchyan, H., Moffit, B., Moreno, O., Mulholland, J., Narayan, A., Nedev, S., Nurruzzaman, N., Piasetzky, E., Pierce, W., Piskunov, N.M., Prok, Y., Ransome, R.D., Razin, D.S., Reimer, P., Reinhold, J., Rondon, O., Shabestari, M., Shahinyan, A., Shestermanov, K., Sirca, S., Sitnik, I., Smykov, L., Smith, G., Solovyev, L., Solvignon, P., Subedi, R., Tomasi-Gustafsson, E., Vasiliev, A., Veilleux, M., Wojtsekhowski, B.B., Wood, S., Ye, Z., Zanevsky, Y., Zhang, X., Zhang, Y., Zheng, X., Zhu, L., Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de l'Accélérateur Linéaire (LAL), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, GEp-III, GEp-2Gamma, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
carbon: target ,Proton form factors ,elastic scattering ,FOS: Physical sciences ,Proton polarimeter ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,spin ,High Energy Physics - Experiment ,electron p: scattering ,High Energy Physics - Experiment (hep-ex) ,Electromagnetic calorimeter ,Spin transport ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,angular distribution ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment ,hydrogen: target ,polarization ,track data analysis ,p: trajectory ,hodoscope ,p: momentum ,alignment ,Magnetic spectrometer ,showers ,Polarization transfer method ,optics ,time projection chamber ,aluminum: target ,kinematics ,dispersion ,correction ,Jefferson Lab ,experimental results - Abstract
The GEp-III and GEp-2$\gamma$ experiments, carried out in Jefferson Lab's Hall C from 2007-2008, consisted of measurements of polarization transfer in elastic electron-proton scattering at momentum transfers of $Q^2 = 2.5, 5.2, 6.8,$ and $8.54$ GeV$^2$. These measurements were carried out to improve knowledge of the proton electromagnetic form factor ratio $R = \mu_p G_E^p/G_M^p$ at large values of $Q^2$ and to search for effects beyond the Born approximation in polarization transfer observables at $Q^2 = 2.5$ GeV$^2$. The final results of both experiments were reported in a recent archival publication. A full reanalysis of the data from both experiments was carried out in order to reduce the systematic and, for the GEp-2$\gamma$ experiment, statistical uncertainties. This technical note provides additional details of the final analysis omitted from the main publication, including the final evaluation of the systematic uncertainties., Comment: 33 pages, 33 figures. v3 = Final manuscript as accepted for publication in Nuclear Instruments and Methods Section A (in press)
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- 2018
218. Atmospheric Electricity Network: coupling with the Earth System, climate and biological systems
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Kourtidis, Konstatinos, Fernández de Arróyabe Hernáez, Pablo, Dragovic, S., Makela, A., Odzimek, A., Rosanov, E., Voiculescu, M., Yair, Y., Vorenhout, M., Barta, V., Birsan, M., Bor, J., Chilingarian, A., Consoulas, C., Djordjevic, M., Haralambous, H., Hunting, E., Kotroni, V., Michal, C., Mkrtchyan, H., Lopes, I., Petaja, T., Pedersen, J.O., Savoska, S., Silva, H., Vana, M., Tsenova, B., and Universidad de Cantabria
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- 2018
219. Letter of Intent: A New QCD facility at the M2 beam line of the CERN SPS
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Adams, B., Aidala, C.A., Akhunzyanov, R., Alexeev, G.D., Alexeev, M.G., Amoroso, A., Andrieux, V., Anfimov, N.V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C.D.R., Azhibekov, A., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Berenguer Antequera, J., Bernauer, J.C., Bernhard, J., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Büchele, M., Burtsev, V.E., Chang, W.-C., Chatterjee, C., Chen, X., Chiosso, M., Chumakov, A.G., Chung, S.-U., Cicuttin, A., Correia, P., Crespo, M.L., Dalla Torre, S., Dasgupta, S.S., Dasgupta, S., Dashyan, N., Denisenko, I., Denisov, O.Yu., Dhara, L., d'Hose, N., Donato, F., Donskov, S.V., Doshita, N., Dreisbach, Ch., Dünnweber, W., Dusaev, R.R., Dziewiecki, M., Dzyuba, A., Efremov, A., Egelhof, P., Elagin, A., Eversheim, P.D., Faessler, M., Fedotova, J., Ferrero, A., Finger, M., Finger, Michael, Jr., Fischer, H., Franco, C., Friedrich, J.M., Frolov, V., Futch, A., Gautheron, F., Gavrichtchouk, O.P., Gerassimov, S., Gevorkyan, S., Ghandilyan, Y., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Grosse Perdekamp, M., Grube, B., Gushterski, R.I., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., He, X., Heitz, R., Herrmann, F., Horikawa, N., Hsieh, C.-Y., Huber, S., Inglessi, A., Ilyichev, A., Isataev, T., Ishimoto, S., Ivanov, A., Ivanov, N., Ivanshin, Yu., Iwata, T., Jandek, M., Jary, V., Jen, C.-M., Joosten, R., Jörg, P., Juraskova, K., Kabuß, E., Kabyshev, A., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G.V., Khokhlov, Yu.A., Kim, M., Kiselev, O., Kisselev, Yu., Klein, F., Koivuniemi, J.H., Kolosov, V.N., Kondo, K., Konorov, I., Konstantinov, V.F., Kotzinian, A.M., Kouznetsov, O.M., Koval, A., Kral, Z., Krinner, F., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R.P., Kuterbekov, K., Kuznetsov, I.I., Kveton, A., Levchenko, E.A., Levorato, S., Lian, Y.-S., Liang, Y., Lichtenstadt, J., Lin, P.-J., Liu, K., Liu, M.X., Longo, R., Lorenzon, W., Losekamm, M., Lyubovitskij, V.E., Maev, E., Maggiora, A., Magnon, A., Makarenko, V., Makins, N., Makke, N., Mallot, G.K., Maltsev, A., Mamon, S.A., Marianski, B., Martin, A., Marukyan, H., Marzec, J., Masi, N., Matoušek, J., Matsuda, H., Mattson, G., Meshcheryakov, G.V., Meyer, W., Meyer, M., Mikhailov, Yu.V., Mikhasenko, M., Minot, M., Mitrofanov, E., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Neyret, D., Nigmatkulov, G., Mkrtchyan, A., Mkrtchyan, H., Nový, J., Nowak, W.-D., Nozzoli, F., Nukazuka, G., Nunes, A.S., Olshevsky, A.G., Orlov, I., Osborn, J.D., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J.-C., Pereira, F., Peshekhonov, D.V., Pešek, M., Pešková, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V.A., Pöschi, T., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Raymond, R., Reicherz, G., Riedl, C., Ryabchikov, D.I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V.D., Sandacz, A., Sarkar, S., Sarsour, M., Savin, I.A., Sbrizzai, G., Schmieden, H., Seder, E., Selyunin, A., Simon, H., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Sznajder, P., Tasevsky, M., Tchekhovski, V., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B.I., Vassiliev, A., Vauth, A., Veit, B.M., Ventura, B., Veloso, J., Vidon, A., Virius, M., Vorobyev, A., Wagner, M., Wallner, S., Wilfert, M., Xiao, Z., Xu, N., Yang, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhao, H., Zhao, Y., Zhuravlev, N., Ziembicki, M., and Zuccon, P.
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Physics::Instrumentation and Detectors ,hep-ex ,High Energy Physics::Lattice ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Detectors and Experimental Techniques ,Nuclear Experiment ,physics.ins-det ,Particle Physics - Experiment - Abstract
A New QCD facility at the M2 beam line of the CERN SPS COMPASS++/AMBER
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- 2018
220. Magnetic-resonance imaging as a basis for a modern approach in diagnostics and treatment evaluation of cervical cancer (literature review)
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Petrova, A. S., primary, Smirnova, O. A., additional, Mishchenko, A. V., additional, Berlev, I. V., additional, Ulrich, E. A., additional, Mkrtchyan, H. B., additional, Kosichkina, A. B., additional, and Nyuganen, A. O., additional
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- 2019
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221. Search for polarized antiproton production
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Grzonka, D., primary, Alfs, D., additional, Asaturyan, A., additional, Carmignotto, M., additional, Diermaier, M., additional, Eyrich, W., additional, Głowacz, B., additional, Hauenstein, F., additional, Horn, T., additional, Kilian, K., additional, Lersch, D., additional, Malbrunot-Ettenauer, S., additional, Mkrtchyan, A., additional, Mkrtchyan, H., additional, Moskal, P., additional, Nadel-Turonski, P., additional, Oelert, W., additional, Ritman, J., additional, Sefzick, T., additional, Tadevosyan, V., additional, Widmann, E., additional, Wolke, M., additional, Zhamkochyan, S., additional, Zieliński, M., additional, Zink, A., additional, and Zmeskal, J., additional
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- 2019
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- View/download PDF
222. Base-Catalyzed Intramolecular [4+2]-Cycloaddition of [3-Arylprop-2-yn-1-yl](3-phenylprop-2-en-1-yl)ammonium Bromides and Cleavage of the Cycloaddition Products in Aqueous Alkali
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Chukhajian, E. O., primary, Ayrapetyan, L. V., additional, Shahkhatuni, K. G., additional, Chukhajian, El. O., additional, Mkrtchyan, H. S., additional, and Panosyan, H. A., additional
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- 2019
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223. A global atmospheric electricity monitoring network for climate and geophysical research
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Nicoll, K.A., primary, Harrison, R.G., additional, Barta, V., additional, Bor, J., additional, Brugge, R., additional, Chillingarian, A., additional, Chum, J., additional, Georgoulias, A.K., additional, Guha, A., additional, Kourtidis, K., additional, Kubicki, M., additional, Mareev, E., additional, Matthews, J., additional, Mkrtchyan, H., additional, Odzimek, A., additional, Raulin, J.-P., additional, Robert, D., additional, Silva, H.G., additional, Tacza, J., additional, Yair, Y., additional, and Yaniv, R., additional
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- 2019
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224. Polarization analysis of p̄ produced in pA collisions
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Grzonka, D., primary, Alfs, D., additional, Asaturyan, A., additional, Carmignotto, M., additional, Diermaier, M., additional, Eyrich, W., additional, Głowacz, B., additional, Hauenstein, F., additional, Horn, T., additional, Kilian, K., additional, Lersch, D., additional, Malbrunot-Ettenauer, S., additional, Mkrtchyan, A., additional, Mkrtchyan, H., additional, Moskal, P., additional, Nadel-Turonski, P., additional, Oelert, W., additional, Ritman, J., additional, Sefzick, T., additional, Tadevosyan, V., additional, Widmann, E., additional, Wolke, M., additional, Zhamkochyan, S., additional, Zieliński, M., additional, Zink, A., additional, and Zmeskal, J., additional
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- 2019
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225. Drift chamber calibration and particle identification in the P-349 experiment
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Alfs, D., primary, Asaturyan, A., additional, Carmignotto, M., additional, Diermaier, M., additional, Eyrich, W., additional, Głowacz, B., additional, Grzonka, D., additional, Hauenstein, F., additional, Horn, T., additional, Kilian, K., additional, Lersch, D., additional, Malbrunot-Ettenauer, S., additional, Mkrtchyan, A., additional, Mkrtchyan, H., additional, Moskal, P., additional, Nadel-Turonski, P., additional, Oelert, W., additional, Ritman, J., additional, Sefzick, T., additional, Tadevosyan, V., additional, Widmann, E., additional, Wolke, M., additional, Zhamkochyan, S., additional, Zieliński, M., additional, Zink, A., additional, and Zmeskal, J., additional
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- 2019
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226. Polarization transfer observables in elastic electron-proton scattering at Q2=2.5, 5.2, 6.8, and 8.5 GeV2 POLARIZATION TRANSFER OBSERVABLES in ELASTIC ... A. J. R. PUCKETT et al
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Puckett, AJR, Brash, EJ, Jones, MK, Luo, W, Meziane, M, Pentchev, L, Perdrisat, CF, Punjabi, V, Wesselmann, FR, Afanasev, A, Ahmidouch, A, Albayrak, I, Aniol, KA, Arrington, J, Asaturyan, A, Baghdasaryan, H, Benmokhtar, F, Bertozzi, W, Bimbot, L, Bosted, P, Boeglin, W, Butuceanu, C, Carter, P, Chernenko, S, Christy, ME, Commisso, M, Cornejo, JC, Covrig, S, Danagoulian, S, Daniel, A, Davidenko, A, Day, D, Dhamija, S, Dutta, D, Ent, R, Frullani, S, Fenker, H, Frlez, E, Garibaldi, F, Gaskell, D, Gilad, S, Gilman, R, Goncharenko, Y, Hafidi, K, Hamilton, D, Higinbotham, DW, Hinton, W, Horn, T, Hu, B, Huang, J, Huber, GM, Jensen, E, Keppel, C, Khandaker, M, King, P, Kirillov, D, Kohl, M, Kravtsov, V, Kumbartzki, G, Li, Y, Mamyan, V, Margaziotis, DJ, Marsh, A, Matulenko, Y, Maxwell, J, Mbianda, G, Meekins, D, Melnik, Y, Miller, J, Mkrtchyan, A, Mkrtchyan, H, Moffit, B, Moreno, O, Mulholland, J, Narayan, A, Nedev, S, Nuruzzaman, Piasetzky, E, Pierce, W, Piskunov, NM, Prok, Y, Ransome, RD, Razin, DS, Reimer, P, Reinhold, J, Rondon, O, Shabestari, M, Shahinyan, A, Shestermanov, K, Širca, S, Sitnik, I, Smykov, L, Smith, G, Solovyev, L, Solvignon, P, Subedi, R, Tomasi-Gustafsson, E, Vasiliev, A, Veilleux, M, and Wojtsekhowski, BB
- Abstract
Background: Interest in the behavior of nucleon electromagnetic form factors at large momentum transfers has steadily increased since the discovery, using polarization observables, of the rapid decrease of the ratio GEp/GMp of the proton's electric and magnetic form factors for momentum transfers Q21 GeV2, in strong disagreement with previous extractions of this ratio using the traditional Rosenbluth separation technique. Purpose: The GEp-III and GEp-2γ experiments were carried out in Jefferson Laboratory's (JLab's) Hall C from 2007 to 2008, to extend the knowledge of GEp/GMp to the highest practically achievable Q2 given the maximum beam energy of 6 GeV and to search for effects beyond the Born approximation in polarization transfer observables of elastic ∫ - p scattering. This article provides an expanded description of the common experimental apparatus and data analysis procedures, and reports the results of a final reanalysis of the data from both experiments, including the previously unpublished results of the full-acceptance dataset of the GEp-2γ experiment. Methods: Polarization transfer observables in elastic ∫ - p→∫ - scattering were measured at central Q2 values of 2.5, 5.2, 6.8, and 8.54 GeV2. At Q2=2.5GeV2, data were obtained for central values of the virtual photon polarization parameter ϵ of 0.149, 0.632, and 0.783. The Hall C High Momentum Spectrometer detected and measured the polarization of protons recoiling elastically from collisions of JLab's polarized electron beam with a liquid hydrogen target. A large-acceptance electromagnetic calorimeter detected the elastically scattered electrons in coincidence to suppress inelastic backgrounds. Results: The final GEp-III data are largely unchanged relative to the originally published results. The statistical uncertainties of the final GEp-2γ data are significantly reduced at ϵ=0.632 and 0.783 relative to the original publication. Conclusions: The final GEp-III results show that the decrease with Q2 of GEp/GMp continues to Q2=8.5GeV2, but at a slowing rate relative to the approximately linear decrease observed in earlier Hall A measurements. At Q2=8.5GeV2, GEp/GMp remains positive but is consistent with zero. At Q2=2.5GeV2, GEp/GMp derived from the polarization component ratio R-Pt/P shows no statistically significant ϵ dependence, as expected in the Born approximation. On the other hand, the ratio P""/P""Born of the longitudinal polarization transfer component to its Born value shows an enhancement of roughly 1.7% at ϵ=0.783 relative to ϵ=0.149, with ≈2.2σ significance based on the total uncertainty, implying a similar effect in the transverse component Pt that cancels in the ratio R.
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- 2017
227. Polarization transfer observables in elastic electron-proton scattering at Q2=2.5, 5.2, 6.8, and 8.5 GeV2
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Puckett, A. J. R., Brash, E. J., Jones, M. K., Luo, W., Meziane, M., Pentchev, L., Perdrisat, C. F., Punjabi, V., Wesselmann, F. R., Afanasev, A., Ahmidouch, A., Albayrak, I., Aniol, K. A., Arrington, J., Asaturyan, A., Baghdasaryan, H., Benmokhtar, F., Bertozzi, W., Bimbot, L., Bosted, P., Boeglin, W., Butuceanu, C., Carter, P., Chernenko, S., Christy, M. E., Commisso, M., Cornejo, J. C., Covrig, S., Danagoulian, S., Daniel, A., Davidenko, A., Day, D., Dhamija, S., Dutta, D., Ent, R., Frullani, S., Fenker, H., Frlez, E., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Goncharenko, Y., Hafidi, K., Hamilton, D., Higinbotham, D. W., Hinton, W., Horn, T., Hu, B., Huang, J., Huber, G. M., Jensen, E., Keppel, C., Khandaker, M., King, P., Kirillov, D., Kohl, M., Kravtsov, V., Kumbartzki, G., Li, Y., Mamyan, V., Margaziotis, D. J., Marsh, A., Matulenko, Y., Maxwell, J., Mbianda, G., Meekins, D., Melnik, Y., Miller, J., Mkrtchyan, A., Mkrtchyan, H., Moffit, B., Moreno, O., Mulholland, J., Narayan, A., Nedev, S., Nuruzzaman, Piasetzky, E., Pierce, W., Piskunov, N. M., Prok, Y., Ransome, R. D., Razin, D. S., Reimer, P., Reinhold, J., Rondon, O., Shabestari, M., Shahinyan, A., Shestermanov, K., Širca, S., Sitnik, I., Smykov, L., Smith, G., Solovyev, L., Solvignon, P., Subedi, R., Tomasi-Gustafsson, E., Vasiliev, A., Veilleux, M., Wojtsekhowski, B. B., Wood, S., Ye, Z., Zanevsky, Y., Zhang, X., Zhang, Y., Zheng, X., and Zhu, L.
- Abstract
Purpose: The GEp-III and GEp-2γ experiments were carried out in Jefferson Laboratory’s (JLab’s) Hall C from\ud 2007 to 2008, to extend the knowledge of Gp\ud E/Gp\ud M to the highest practically achievable Q2 given the maximum\ud beam energy of 6 GeV and to search for effects beyond the Born approximation in polarization transfer observables\ud of elastic ep scattering. This article provides an expanded description of the common experimental apparatus and\ud data analysis procedures, and reports the results of a final reanalysis of the data from both experiments, including\ud the previously unpublished results of the full-acceptance dataset of the GEp-2γ experiment.\ud Methods: Polarization transfer observables in elastic ep → ep scattering were measured at central Q2 values\ud of 2.5, 5.2, 6.8, and 8.54 GeV2\ud . At Q2 = 2.5 GeV2\ud , data were obtained for central values of the virtual photon\ud polarization parameter of 0.149, 0.632, and 0.783. The Hall C High Momentum Spectrometer detected and\ud measured the polarization of protons recoiling elastically from collisions of JLab’s polarized electron beam\ud with a liquid hydrogen target. A large-acceptance electromagnetic calorimeter detected the elastically scattered\ud electrons in coincidence to suppress inelastic backgrounds.\ud Results: The final GEp-III data are largely unchanged relative to the originally published results. The statistical\ud uncertainties of the final GEp-2γ data are significantly reduced at = 0.632 and 0.783 relative to the original\ud publication.\ud Conclusions: The final GEp-III results show that the decrease with Q2 of Gp\ud E/Gp\ud M continues to Q2 = 8.5 GeV2, but at a slowing rate relative to the approximately linear decrease observed in earlier Hall A measurements. At\ud Q2 = 8.5 GeV2\ud , Gp\ud E/Gp\ud M remains positive but is consistent with zero. At Q2 = 2.5 GeV2\ud , Gp\ud E/Gp\ud M derived from\ud the polarization component ratio R ∝ Pt/P shows no statistically significant dependence, as expected in the\ud Born approximation. On the other hand, the ratio Pl/P Born\ud l of the longitudinal polarization transfer component\ud to its Born value shows an enhancement of roughly 1.7% at = 0.783 relative to = 0.149, with ≈ 2.2σ\ud significance based on the total uncertainty, implying a similar effect in the transverse component Pt that cancels\ud in the ratio R.
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- 2017
228. Polarization transfer observables in elastic electron-proton scattering at Q2=2.5, 5.2, 6.8, and 8.5 GeV2
- Author
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Puckett, AJR, Brash, EJ, Jones, MK, Luo, W, Meziane, M, Pentchev, L, Perdrisat, CF, Punjabi, V, Wesselmann, FR, Afanasev, A, Ahmidouch, A, Albayrak, I, Aniol, KA, Arrington, J, Asaturyan, A, Baghdasaryan, H, Benmokhtar, F, Bertozzi, W, Bimbot, L, Bosted, P, Boeglin, W, Butuceanu, C, Carter, P, Chernenko, S, Christy, ME, Commisso, M, Cornejo, JC, Covrig, S, Danagoulian, S, Daniel, A, Davidenko, A, Day, D, Dhamija, S, Dutta, D, Ent, R, Frullani, S, Fenker, H, Frlez, E, Garibaldi, F, Gaskell, D, Gilad, S, Gilman, R, Goncharenko, Y, Hafidi, K, Hamilton, D, Higinbotham, DW, Hinton, W, Horn, T, Hu, B, Huang, J, Huber, GM, Jensen, E, Keppel, C, Khandaker, M, King, P, Kirillov, D, Kohl, M, Kravtsov, V, Kumbartzki, G, Li, Y, Mamyan, V, Margaziotis, DJ, Marsh, A, Matulenko, Y, Maxwell, J, Mbianda, G, Meekins, D, Melnik, Y, Miller, J, Mkrtchyan, A, Mkrtchyan, H, Moffit, B, Moreno, O, Mulholland, J, Narayan, A, Nedev, S, Nuruzzaman, Piasetzky, E, Pierce, W, Piskunov, NM, Prok, Y, Ransome, RD, Razin, DS, Reimer, P, Reinhold, J, Rondon, O, Shabestari, M, Shahinyan, A, Shestermanov, K, Širca, S, Sitnik, I, Smykov, L, Smith, G, Solovyev, L, Solvignon, P, Subedi, R, Tomasi-Gustafsson, E, Vasiliev, A, Veilleux, M, and Wojtsekhowski, BB
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Particle and Plasma Physics ,Molecular ,Nuclear ,Atomic ,Nuclear & Particles Physics - Abstract
Background: Interest in the behavior of nucleon electromagnetic form factors at large momentum transfers has steadily increased since the discovery, using polarization observables, of the rapid decrease of the ratio GEp/GMp of the proton's electric and magnetic form factors for momentum transfers Q21 GeV2, in strong disagreement with previous extractions of this ratio using the traditional Rosenbluth separation technique. Purpose: The GEp-III and GEp-2γ experiments were carried out in Jefferson Laboratory's (JLab's) Hall C from 2007 to 2008, to extend the knowledge of GEp/GMp to the highest practically achievable Q2 given the maximum beam energy of 6 GeV and to search for effects beyond the Born approximation in polarization transfer observables of elastic ∫ - p scattering. This article provides an expanded description of the common experimental apparatus and data analysis procedures, and reports the results of a final reanalysis of the data from both experiments, including the previously unpublished results of the full-acceptance dataset of the GEp-2γ experiment. Methods: Polarization transfer observables in elastic ∫ - p→∫ - scattering were measured at central Q2 values of 2.5, 5.2, 6.8, and 8.54 GeV2. At Q2=2.5GeV2, data were obtained for central values of the virtual photon polarization parameter ϵ of 0.149, 0.632, and 0.783. The Hall C High Momentum Spectrometer detected and measured the polarization of protons recoiling elastically from collisions of JLab's polarized electron beam with a liquid hydrogen target. A large-acceptance electromagnetic calorimeter detected the elastically scattered electrons in coincidence to suppress inelastic backgrounds. Results: The final GEp-III data are largely unchanged relative to the originally published results. The statistical uncertainties of the final GEp-2γ data are significantly reduced at ϵ=0.632 and 0.783 relative to the original publication. Conclusions: The final GEp-III results show that the decrease with Q2 of GEp/GMp continues to Q2=8.5GeV2, but at a slowing rate relative to the approximately linear decrease observed in earlier Hall A measurements. At Q2=8.5GeV2, GEp/GMp remains positive but is consistent with zero. At Q2=2.5GeV2, GEp/GMp derived from the polarization component ratio R-Pt/P shows no statistically significant ϵ dependence, as expected in the Born approximation. On the other hand, the ratio P""/P""Born of the longitudinal polarization transfer component to its Born value shows an enhancement of roughly 1.7% at ϵ=0.783 relative to ϵ=0.149, with ≈2.2σ significance based on the total uncertainty, implying a similar effect in the transverse component Pt that cancels in the ratio R.
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- 2017
229. A novel comparison of Møller and Compton electron-beam polarimeters
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Magee, J.A., Narayan, A., Jones, D., Beminiwattha, R., Cornejo, J.C., Dalton, M.M., Deconinck, W., Dutta, D., Gaskell, D., Martin, J.W., Paschke, K.D., Tvaskis, V., Asaturyan, A., Benesch, J., Cates, G., Cavness, B.S., A. Dillon-Townes, L., Hays, G., Hoskins, J., Ihloff, E., Jones, R., King, P.M., Kowalski, S., Kurchaninov, L., Lee, L., McCreary, A., McDonald, M., Micherdzinska, A., Mkrtchyan, A., Mkrtchyan, H., Nelyubin, V., Page, S., Ramsay, W.D., Solvignon, P., Storey, D., Tobias, W.A., Urban, E., Vidal, C., Waidyawansa, B., Wang, P., and Zhamkotchyan, S.
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- 2017
- Full Text
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230. Measurements of the separated longitudinal structure function FL from hydrogen and deuterium targets at low Q2
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Tvaskis, V, Tvaskis, V, Tvaskis, A, Niculescu, I, Abbott, D, Adams, GS, Afanasev, A, Ahmidouch, A, Angelescu, T, Arrington, J, Asaturyan, R, Avery, S, Baker, OK, Benmouna, N, Berman, BL, Biselli, A, Blok, HP, Boeglin, WU, Bosted, PE, Brash, E, Breuer, H, Chang, G, Chant, N, Christy, ME, Connell, SH, Dalton, MM, Danagoulian, S, Day, D, Dodario, T, Dunne, JA, Dutta, D, El Khayari, N, Ent, R, Fenker, HC, Frolov, VV, Gaskell, D, Garrow, K, Gilman, R, Gueye, P, Hafidi, K, Hinton, W, Holt, RJ, Horn, T, Huber, GM, Jackson, H, Jiang, X, Jones, MK, Joo, K, Kelly, JJ, Keppel, CE, Kuhn, J, Kinney, E, Klein, A, Kubarovsky, V, Liang, Y, Lolos, G, Lung, A, Mack, D, Malace, S, Markowitz, P, Mbianda, G, McGrath, E, McKee, D, Meekins, DG, Mkrtchyan, H, Napolitano, J, Navasardyan, T, Niculescu, G, Nozar, M, Ostapenko, T, Papandreou, Z, Potterveld, D, Reimer, PE, Reinhold, J, Roche, J, Rock, SE, Schulte, E, Segbefia, E, Smith, C, Smith, GR, Stoler, P, Tadevosyan, V, Tang, L, Telfeyan, J, Todor, L, Ungaro, M, Uzzle, A, Vidakovic, S, Villano, A, Vulcan, WF, Warren, G, Wesselmann, F, Wojtsekhowski, B, Wood, SA, Yan, C, Zihlmann, B, Tvaskis, V, Tvaskis, V, Tvaskis, A, Niculescu, I, Abbott, D, Adams, GS, Afanasev, A, Ahmidouch, A, Angelescu, T, Arrington, J, Asaturyan, R, Avery, S, Baker, OK, Benmouna, N, Berman, BL, Biselli, A, Blok, HP, Boeglin, WU, Bosted, PE, Brash, E, Breuer, H, Chang, G, Chant, N, Christy, ME, Connell, SH, Dalton, MM, Danagoulian, S, Day, D, Dodario, T, Dunne, JA, Dutta, D, El Khayari, N, Ent, R, Fenker, HC, Frolov, VV, Gaskell, D, Garrow, K, Gilman, R, Gueye, P, Hafidi, K, Hinton, W, Holt, RJ, Horn, T, Huber, GM, Jackson, H, Jiang, X, Jones, MK, Joo, K, Kelly, JJ, Keppel, CE, Kuhn, J, Kinney, E, Klein, A, Kubarovsky, V, Liang, Y, Lolos, G, Lung, A, Mack, D, Malace, S, Markowitz, P, Mbianda, G, McGrath, E, McKee, D, Meekins, DG, Mkrtchyan, H, Napolitano, J, Navasardyan, T, Niculescu, G, Nozar, M, Ostapenko, T, Papandreou, Z, Potterveld, D, Reimer, PE, Reinhold, J, Roche, J, Rock, SE, Schulte, E, Segbefia, E, Smith, C, Smith, GR, Stoler, P, Tadevosyan, V, Tang, L, Telfeyan, J, Todor, L, Ungaro, M, Uzzle, A, Vidakovic, S, Villano, A, Vulcan, WF, Warren, G, Wesselmann, F, Wojtsekhowski, B, Wood, SA, Yan, C, and Zihlmann, B
- Abstract
Structure functions, as measured in lepton-nucleon scattering, have proven to be very useful in studying the partonic dynamics within the nucleon. However, it is experimentally difficult to separately determine the longitudinal and transverse structure functions, and consequently there are substantially less data available in particular for the longitudinal structure function. Here, we present separated structure functions for hydrogen and deuterium at low four-momentum transfer squared, Q2<1GeV2, and compare them with parton distribution parametrization and kT factorization approaches. While differences are found, the parametrizations generally agree with the data, even at the very low-Q2 scale of the data. The deuterium data show a smaller longitudinal structure function and a smaller ratio of longitudinal to transverse cross section, R, than the proton. This suggests either an unexpected difference in R for the proton and the neutron or a suppression of the gluonic distribution in nuclei.
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- 2018
231. Erratum: Polarization transfer observables in elastic electron-proton scattering at Q2=2.5, 5.2, 6.8, and 8.5 GeV2 (Physical Review C (2017) 96 (055203) DOI: 10.1103/PhysRevC.96.055203)
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Puckett, AJR, Puckett, AJR, Brash, EJ, Jones, MK, Luo, W, Meziane, M, Pentchev, L, Perdrisat, CF, Punjabi, V, Wesselmann, FR, Afanasev, A, Ahmidouch, A, Albayrak, I, Aniol, KA, Arrington, J, Asaturyan, A, Baghdasaryan, H, Benmokhtar, F, Bertozzi, W, Bimbot, L, Bosted, P, Boeglin, W, Butuceanu, C, Carter, P, Chernenko, S, Christy, ME, Commisso, M, Cornejo, JC, Covrig, S, Danagoulian, S, Daniel, A, Davidenko, A, Day, D, Dhamija, S, Dutta, D, Ent, R, Frullani, S, Fenker, H, Frlez, E, Garibaldi, F, Gaskell, D, Gilad, S, Gilman, R, Goncharenko, Y, Hafidi, K, Hamilton, D, Higinbotham, DW, Hinton, W, Horn, T, Hu, B, Huang, J, Huber, GM, Jensen, E, Keppel, C, Khandaker, M, King, P, Kirillov, D, Kohl, M, Kravtsov, V, Kumbartzki, G, Li, Y, Mamyan, V, Margaziotis, DJ, Marsh, A, Matulenko, Y, Maxwell, J, Mbianda, G, Meekins, D, Melnik, Y, Miller, J, Mkrtchyan, A, Mkrtchyan, H, Moffit, B, Moreno, O, Mulholland, J, Narayan, A, Nedev, S, Nuruzzaman, Piasetzky, E, Pierce, W, Piskunov, NM, Prok, Y, Ransome, RD, Razin, DS, Reimer, P, Reinhold, J, Rondon, O, Shabestari, M, Shahinyan, A, Shestermanov, K, Širca, S, Sitnik, I, Smykov, L, Smith, G, Solovyev, L, Solvignon, P, Subedi, R, Tomasi-Gustafsson, E, Vasiliev, A, Veilleux, M, Wojtsekhowski, BB, Puckett, AJR, Puckett, AJR, Brash, EJ, Jones, MK, Luo, W, Meziane, M, Pentchev, L, Perdrisat, CF, Punjabi, V, Wesselmann, FR, Afanasev, A, Ahmidouch, A, Albayrak, I, Aniol, KA, Arrington, J, Asaturyan, A, Baghdasaryan, H, Benmokhtar, F, Bertozzi, W, Bimbot, L, Bosted, P, Boeglin, W, Butuceanu, C, Carter, P, Chernenko, S, Christy, ME, Commisso, M, Cornejo, JC, Covrig, S, Danagoulian, S, Daniel, A, Davidenko, A, Day, D, Dhamija, S, Dutta, D, Ent, R, Frullani, S, Fenker, H, Frlez, E, Garibaldi, F, Gaskell, D, Gilad, S, Gilman, R, Goncharenko, Y, Hafidi, K, Hamilton, D, Higinbotham, DW, Hinton, W, Horn, T, Hu, B, Huang, J, Huber, GM, Jensen, E, Keppel, C, Khandaker, M, King, P, Kirillov, D, Kohl, M, Kravtsov, V, Kumbartzki, G, Li, Y, Mamyan, V, Margaziotis, DJ, Marsh, A, Matulenko, Y, Maxwell, J, Mbianda, G, Meekins, D, Melnik, Y, Miller, J, Mkrtchyan, A, Mkrtchyan, H, Moffit, B, Moreno, O, Mulholland, J, Narayan, A, Nedev, S, Nuruzzaman, Piasetzky, E, Pierce, W, Piskunov, NM, Prok, Y, Ransome, RD, Razin, DS, Reimer, P, Reinhold, J, Rondon, O, Shabestari, M, Shahinyan, A, Shestermanov, K, Širca, S, Sitnik, I, Smykov, L, Smith, G, Solovyev, L, Solvignon, P, Subedi, R, Tomasi-Gustafsson, E, Vasiliev, A, Veilleux, M, and Wojtsekhowski, BB
- Abstract
Subsequent to the release of our original paper, we discovered in the context of preparing our technical supplement [1] for journal publication that a typographical error had existed in the text file that the analysis program used to construct the beam polarization "database" for both the original analysis, published in Ref. [2], and our final analysis. The electron-beam polarization P e and the analyzing power A y cancel exactly in the ratio R , which is proportional to the ratio P t / P l of the transferred polarization components. On the other hand, the extraction of the relative e dependence of P l / P Born l relies on knowledge of the beam polarization. As such, data taking was interrupted roughly every two days during the GEp - 2 ? experiment to perform invasive measurements of the beam polarization using the Hall C Moller polarimeter [3]. The run range affected by the typographical error was entirely contained within the data collected at Q 2 = 2.5 GeV 2 with a beam energy of E e = 3.680 GeV during January 2008. The data from this configuration were combined with the data collected at E e = 3.548 GeV due to the nearly complete overlap of these two settings in terms of Q 2 and e acceptance. It is worth remarking that this typographical error went unnoticed for so long because it only affected a small fraction of the data (less than half of the combined data for ? e ? = 0.790 ) and the difference between the actually assigned beam polarization and the polarization that should have been assigned was comparable in magnitude to the point-to-point systematic uncertainty of the measurement itself. As such, its effect did not show up in various diagnostic plots and statistical tests, such as the time stability of the extracted P l / P Born l ratio. The data for both E e = 3.548 and E e = 3.680 GeV were reprocessed using the corrected beam polarizations to determine the effect of the typographical error on the combined physics results at ? e ? = 0.790 . Because the va
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- 2018
232. Separated kaon electroproduction cross section and the kaon form factor from 6 GeV JLab data
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Carmignotto, M, Carmignotto, M, Ali, S, Aniol, K, Arrington, J, Barrett, B, Beise, EJ, Blok, HP, Boeglin, W, Brash, EJ, Breuer, H, Chang, CC, Christy, ME, Dittmann, A, Ent, R, Fenker, H, Gaskell, D, Gibson, E, Holt, RJ, Horn, T, Huber, GM, Jin, S, Jones, MK, Keppel, CE, Kim, W, King, PM, Kovaltchouk, V, Liu, J, Lolos, GJ, MacK, DJ, Margaziotis, DJ, Markowitz, P, Matsumura, A, Meekins, D, Miyoshi, T, Mkrtchyan, H, Niculescu, G, Niculescu, I, Okayasu, Y, Pegg, IL, Pentchev, L, Perdrisat, C, Potterveld, D, Punjabi, V, Reimer, PE, Reinhold, J, Roche, J, Sarty, A, Smith, GR, Tadevosyan, V, Tang, LG, Trotta, R, Tvaskis, V, Vargas, A, Vidakovic, S, Volmer, J, Vulcan, W, Warren, G, Wood, SA, Xu, C, Zheng, X, Carmignotto, M, Carmignotto, M, Ali, S, Aniol, K, Arrington, J, Barrett, B, Beise, EJ, Blok, HP, Boeglin, W, Brash, EJ, Breuer, H, Chang, CC, Christy, ME, Dittmann, A, Ent, R, Fenker, H, Gaskell, D, Gibson, E, Holt, RJ, Horn, T, Huber, GM, Jin, S, Jones, MK, Keppel, CE, Kim, W, King, PM, Kovaltchouk, V, Liu, J, Lolos, GJ, MacK, DJ, Margaziotis, DJ, Markowitz, P, Matsumura, A, Meekins, D, Miyoshi, T, Mkrtchyan, H, Niculescu, G, Niculescu, I, Okayasu, Y, Pegg, IL, Pentchev, L, Perdrisat, C, Potterveld, D, Punjabi, V, Reimer, PE, Reinhold, J, Roche, J, Sarty, A, Smith, GR, Tadevosyan, V, Tang, LG, Trotta, R, Tvaskis, V, Vargas, A, Vidakovic, S, Volmer, J, Vulcan, W, Warren, G, Wood, SA, Xu, C, and Zheng, X
- Abstract
The H1(e,e′K+)Λ reaction was studied as a function of the Mandelstam variable -t using data from the E01-004 (FPI-2) and E93-018 experiments that were carried out in Hall C at the 6 GeV Jefferson Laboratory. The cross section was fully separated into longitudinal and transverse components, and two interference terms at four-momentum transfers Q2 of 1.00, 1.36, and 2.07GeV2. The kaon form factor was extracted from the longitudinal cross section using the Regge model by Vanderhaeghen et al. [Phys. Rev. C 57, 1454 (1998)PRVCAN0556-281310.1103/PhysRevC.57.1454]. The results establish the method, previously used successfully for pion analyses, for extracting the kaon form factor. Data from 12 GeV Jefferson Laboratory experiments are expected to have sufficient precision to distinguish between theoretical predictions, for example, recent perturbative QCD calculations with modern parton distribution amplitudes. The leading-twist behavior for light mesons is predicted to set in for values of Q2 between 5 and 10GeV2, which makes data in the few-GeV regime particularly interesting. The Q2 dependence at fixed x and -t of the longitudinal cross section that we extracted seems consistent with the QCD factorization prediction within the experimental uncertainty.
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- 2018
233. Letter of Intent: A New QCD facility at the M2 beam line of the CERN SPS (COMPASS++/AMBER)
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Adams, B., Aidala, C. A., Akhunzyanov, R., Alexeev, G. D., Alexeev, M. G., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Azhibekov, A., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Antequera, J. Berenguer, Bernauer, J. C., Bernhard, J., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chen, X., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Correia, P., Crespo, M. L., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Dashyan, N., Denisenko, I., Denisov, O. Yu., Dhara, L., d'Hose, N., Donato, F., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dunnweber, W., Dusaev, R. R., Dziewiecki, M., Dzyuba, A., Efremov, A., Egelhof, P., Elagin, A., Eversheim, P. D., Faessler, M., Fedotova, J., Ferrero, A., Finger, M., Finger Jr., M., Fischer, H., Franco, C., Friedrich, J. M., Frolov, V., Futch, A., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Gevorkyan, S., Ghandilyan, Y., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Perdekamp, M. Grosse, Grube, B., Gushterski, R. I., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., He, X., Heitz, R., Herrmann, F., Horikawa, N., Hsieh, C. -Y., Huber, S., Inglessi, A., Ilyichev, A., Isataev, T., Ishimoto, S., Ivanov, A., Ivanov, N., Ivanshin, Yu., Iwata, T., Jandek, M., Jary, V., Jen, C. -M., Joosten, R., Joerg, P., Juraskova, K., Kabuss, E., Kabyshev, A., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kim, M., Kiselev, O., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Koval, A., Kral, Z., Kraemer, M., Krinner, F., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuterbekov, K., Kuznetsov, I. I., Kveton, A., Levchenko, E. A., Levorato, S., Lian, Y. -S., Liang, Y., Lichtenstadt, J., Lin, P. -J., Liu, K., Liu, M. X., Longo, R., Lorenzon, W., Losekamm, M., Lyubovitskij, V. E., Maev, E., Maggiora, A., Magnon, A., Makarenko, V., Makins, N., Makke, N., Mallot, G. K., Maltsev, A., Mamon, S. A., Marianski, B., Martin, A., Marukyan, H., Marzec, J., Masi, N., Matousek, J., Matsuda, H., Mattson, G., Meshcheryakov, G. V., Meyer, W., Meyer, M., Mikhailov, Yu. V., Mikhasenko, M., Minot, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Neyret, D., Nigmatkulov, G., Mkrtchyan, A., Mkrtchyan, H., Novy, J., Nowak, W. -D., Nozzoli, F., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Osborn, J. D., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Peshekhonov, D. V., Pesek, M., Peskova, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Poeschl, T., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Raymond, R., Reicherz, G., Riedl, C., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Sarkar, S., Sarsour, M., Savin, I. A., Sbrizzai, G., Schmieden, H., Seder, E., Selyunin, A., Simon, H., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Sznajder, P., Tasevsky, M., Tchekhovski, V., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vassiliev, A., Vauth, A., Veit, B. M., Ventura, B., Veloso, J., Vidon, A., Virius, M., Vorobyev, A., Wagner, M., Wallner, S., Wilfert, M., Xiao, Z., Xu, N., Yang, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhao, H., Zhao, Y., Zhuravlev, N., Ziembicki, M., Zuccon, P., Adams, B., Aidala, C. A., Akhunzyanov, R., Alexeev, G. D., Alexeev, M. G., Amoroso, A., Andrieux, V., Anfimov, N. V., Anosov, V., Antoshkin, A., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Azhibekov, A., Badelek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Antequera, J. Berenguer, Bernauer, J. C., Bernhard, J., Bodlak, M., Bordalo, P., Bradamante, F., Bressan, A., Buchele, M., Burtsev, V. E., Chang, W. -C., Chatterjee, C., Chen, X., Chiosso, M., Chumakov, A. G., Chung, S. -U., Cicuttin, A., Correia, P., Crespo, M. L., Torre, S. Dalla, Dasgupta, S. S., Dasgupta, S., Dashyan, N., Denisenko, I., Denisov, O. Yu., Dhara, L., d'Hose, N., Donato, F., Donskov, S. V., Doshita, N., Dreisbach, Ch., Dunnweber, W., Dusaev, R. R., Dziewiecki, M., Dzyuba, A., Efremov, A., Egelhof, P., Elagin, A., Eversheim, P. D., Faessler, M., Fedotova, J., Ferrero, A., Finger, M., Finger Jr., M., Fischer, H., Franco, C., Friedrich, J. M., Frolov, V., Futch, A., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Gevorkyan, S., Ghandilyan, Y., Giarra, J., Gnesi, I., Gorzellik, M., Grasso, A., Gridin, A., Perdekamp, M. Grosse, Grube, B., Gushterski, R. I., Guskov, A., Hahne, D., Hamar, G., von Harrach, D., He, X., Heitz, R., Herrmann, F., Horikawa, N., Hsieh, C. -Y., Huber, S., Inglessi, A., Ilyichev, A., Isataev, T., Ishimoto, S., Ivanov, A., Ivanov, N., Ivanshin, Yu., Iwata, T., Jandek, M., Jary, V., Jen, C. -M., Joosten, R., Joerg, P., Juraskova, K., Kabuss, E., Kabyshev, A., Kaspar, F., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kim, M., Kiselev, O., Kisselev, Yu., Klein, F., Koivuniemi, J. H., Kolosov, V. N., Kondo, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Koval, A., Kral, Z., Kraemer, M., Krinner, F., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Kuterbekov, K., Kuznetsov, I. I., Kveton, A., Levchenko, E. A., Levorato, S., Lian, Y. -S., Liang, Y., Lichtenstadt, J., Lin, P. -J., Liu, K., Liu, M. X., Longo, R., Lorenzon, W., Losekamm, M., Lyubovitskij, V. E., Maev, E., Maggiora, A., Magnon, A., Makarenko, V., Makins, N., Makke, N., Mallot, G. K., Maltsev, A., Mamon, S. A., Marianski, B., Martin, A., Marukyan, H., Marzec, J., Masi, N., Matousek, J., Matsuda, H., Mattson, G., Meshcheryakov, G. V., Meyer, W., Meyer, M., Mikhailov, Yu. V., Mikhasenko, M., Minot, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Moretti, A., Nagaytsev, A., Naim, C., Neyret, D., Nigmatkulov, G., Mkrtchyan, A., Mkrtchyan, H., Novy, J., Nowak, W. -D., Nozzoli, F., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Osborn, J. D., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J. -C., Pereira, F., Peshekhonov, D. V., Pesek, M., Peskova, M., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V. A., Poeschl, T., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Raymond, R., Reicherz, G., Riedl, C., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Sarkar, S., Sarsour, M., Savin, I. A., Sbrizzai, G., Schmieden, H., Seder, E., Selyunin, A., Simon, H., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Sznajder, P., Tasevsky, M., Tchekhovski, V., Tessaro, S., Tessarotto, F., Thiel, A., Tomsa, J., Tosello, F., Tskhay, V., Uhl, S., Vasilishin, B. I., Vassiliev, A., Vauth, A., Veit, B. M., Ventura, B., Veloso, J., Vidon, A., Virius, M., Vorobyev, A., Wagner, M., Wallner, S., Wilfert, M., Xiao, Z., Xu, N., Yang, J., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhao, H., Zhao, Y., Zhuravlev, N., Ziembicki, M., and Zuccon, P.
- Abstract
A New QCD facility at the M2 beam line of the CERN SPS COMPASS++/AMBER, Comment: 91 pages, 51 figures
- Published
- 2018
234. Electroproduction of kaons and light hypernuclei
- Author
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Reinhold, J., Abbott, D., Ahmidouch, A., Ambrozewicz, P., Armstrong, C.S., Arrington, J., Asaturyan, R., Assamagan, K., Avery, S., Bailey, K., Baker, O.K., Beedoe, S., Bitao, H., Boeglin, W., Breuer, H., Brown, D.S., Carlini, R., Cha, J., Chant, N., Christy, E., Cochran, A., Cole, L., Collins, G., Cothran, C., Crowder, J., Cummings, W.J., Danagoulian, S., Dohrmann, F., Duncan, F., Dunne, J., Dutta, D., Eden, T., Elaasar, M., Ent, R., Ewell, L., Fenker, H., Fortune, H.T., Fujii, Y., Gan, L., Gao, H., Garrow, K., Geesaman, D.F., Gueye, P., Gustafsson, K., Hafidi, K., Hansen, J.O., Hinton, W., Jackson, H.E., Juengst, H., Keppel, C., Klein, A., Koltenuk, D., Liang, Y., Liu, J.H., Lung, A., Mack, D., Madey, R., Markowitz, P., Martoff, C.J., Meekins, D., Mitchell, J., Miyoshi, T., Mkrtchyan, H., Mohring, R., Mtingwa, S.K., Mueller, B., O'Neill, T.G., Niculescu, G., Niculescu, I., Potterveld, D., Price, J.W., Raue, B.A., Reimer, P.E., Roche, J., Roos, P., Sarsour, M., Sato, Y., Savage, G., Sawafta, R., Schiffer, J.P., Segel, R.E., Semenov, A., Stepanyan, S., Tadevosian, V., Tajima, S., Tang, L., Terburg, B., Uzzle, A., Wood, S., Yamaguchi, H., Yan, C., Yuan, L., Zeidman, B., Zeier, M., and Zihlmann, B.
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- 2001
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235. Electroproduction of kaons on light nuclei
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Zeidman, B., Abbott, D., Ahmidouch, A., Ambrozewicz, P., Armstrong, C.S., Arrington, J., Asaturyan, R., Assamagan, K., Avery, S., Bailey, K., Baker, O.K., Beedoe, S., Bitao, H., Breuer, H., Brown, D.S., Carlini, R., Cha, J., Chant, N., Christy, E., Cochran, A., Cole, L., Collins, G., Cothran, C., Crowder, J., Cummings, W.J., Danagoulian, S., Dohrmann, F., Duncan, F., Dunne, J., Dutta, D., Eden, T., Elaasar, M., Ent, R., Ewell, L., Fenker, H., Fortune, H.T., Fujii, Y., Gan, L., Gao, H., Garrow, K., Geesaman, D.F., Gueye, P., Gustafsson, K., Hafidi, K., Hansen, J.O., Hinton, W., Jackson, H.E., Juengst, H., Keppel, C., Klein, A., Koltenuk, D., Liang, Y., Liu, J.H., Lung, A., Mack, D., Madey, R., Markowitz, P., Martoff, C.J., Meekins, D., Mitchell, J., Miyoshi, T., Mkrtchyan, H., Mohring, R., Mtingwa, S.K., Mueller, B., O'Neill, T.G., Niculescu, G., Niculescu, I., Potterveld, D., Price, J.W., Raue, B.A., Reimer, P.E., Reinhold, J., Roche, J., Roos, P., Sarsour, M., Sato, Y., Savage, G., Sawafta, R., Schiffer, J.P., Segel, R.E., Semenov, A., Stepanyan, S., Tadevosian, V., Tajima, S., Tang, L., Terburg, B., Uzzle, A., Wood, S., Yamaguchi, H., Yan, C., Yuan, L., Zeier, M., and Zihlmann, B.
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- 2001
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236. Production of 186gRe Medical Isotope on the Proton Beam of Cyclotron C18/18.
- Author
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Avetisyan, R. V., Barseghyan, A. G., Garibyan, Yu. A., Gyurdjinyan, A. V., Kerobyan, I. A., and Mkrtchyan, H. A.
- Abstract
The production of the therapeutic
186g Re radioisotope by proton-inducednat W(p,xn) reaction at the cyclotron C18/18 was investigated. The cyclotron is located at the A. Alikhanyan National Science Laboratory (Yerevan Physics Institute). The excitation function of the reaction in the proton energy range from the reaction threshold up to 18 MeV was measured. The measurements were carried out by the stack activation method followed by spectrometric analysis on the high purity germanium detector (HPGe). The activation of the obtained medical isotope186g Re was determined. The current experimental results are compared with theoretical calculations performed by TALYS 1.95 and EMPIRE 3.2 codes, as well as with the other available experimental data. It has been shown the possibility of production of the above-mentioned radionuclide on the cyclotron C18/18 in the amount required for medical purposes using an enriched target. [ABSTRACT FROM AUTHOR]- Published
- 2021
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237. Intramolecular Cycloaddition of [3-(Naphthalen-1-yl)prop-2-yn-1-yl](3-phenylprop-2-en-1-yl)ammonium Bromides and Cleavage of Some of the Obtained Cyclic Salts in Aqueous Alkali.
- Author
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Chukhajian, E. O., Ayrapetyan, L. V., Shahkhatuni, K. G., Mkrtchyan, H. S., and Panosyan, H. A.
- Subjects
AMMONIUM bromide ,RING formation (Chemistry) ,ALKALIES ,SALTS - Abstract
Intramolecular cycloaddition of [3-(naphthalen-1-yl)prop-2-yn-1-yl](3-phenylprop-2-en-1-yl)ammonium bromide under very mild conditions afforded potentially biologically active 4-phenyl-3a,4-dihydronaphtho[f]isoindolium salts in high yields. Some of the synthesized salts underwent cleavage on heating in aqueous alkali to give mixtures of isomeric aminomethylphenanthrenes. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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238. Drift Chamber Calibration and Track Reconstruction in the P349 Antiproton Polarization Experiment
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Alfs, D, Głowacz, B, Moskal, P, Zieliński, M, Grzonka, D, Hauenstein, F, Kilian, K, Lersch, D, Ritman, J, Sefzick, T, Oelert, W, Diermaier, M, Widmann, E, Zmeskal, J, Wolke, M, Nadel-Turonski, P, Carmignotto, M, Horn, T, Mkrtchyan, H, Asaturyan, A, Mkrtchyan, A, Tadevosyan, V, Zhamkochyan, S, Malbrunot-Ettenauer, S, Eyrich, W, and Zink, A
- Subjects
Physics ,010308 nuclear & particles physics ,Track (disk drive) ,General Physics and Astronomy ,Polarization (waves) ,01 natural sciences ,Nuclear physics ,Antiproton ,0103 physical sciences ,Calibration ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,ddc:530 ,Physics::Atomic Physics ,Detectors and Experimental Techniques ,Nuclear Experiment ,010306 general physics ,Computer Science::Databases - Abstract
The goal of the P349 experiment is to test whether the antiproton production process can be itself a source of antiproton polarization. In this article, we present the motivation and details of the performed measurement. We report on the status of the analysis focusing mainly on calibration of the drift chambers and 3d track reconstruction.
- Published
- 2017
239. Workshop on High-Intensity Photon Sources (HIPS2017) Mini-Proceedings
- Author
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Ali, S., Allison, L., Amaryan, M., Benimiwattha, R., Camsonne, A., Day, D., Degtiarenko, P., Dutta, D., Ent, R., Goity, J. L., Hamilton, D., Hen, O., Horn, T., Hyde, C., Kalicy, G., Keller, D., Keppel, C., Kim, C., Kinney, E., Kroll, P., Larionov, A., Liuti, S., Mai, M., Mkrtchyan, A., Mkrtchyan, H., Munoz-Camacho, C., Napolitano, J., Niculescu, G., Patsyuk, M., Perera, G., Rashad, H., Roche, J., Sargsian, M., Sirca, S., Strakovsky, I., Strikman, M., Tadevosyan, V., Trotta, R., Uniyal, R., Vargas, A. H., Wojtsekhowski, B., and Zhang, J.
- Subjects
High Energy Physics::Phenomenology ,FOS: Physical sciences ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
This workshop aimed at producing an optimized photon source concept with potential increase of scientific output at Jefferson Lab, and at refining the science for hadron physics experiments benefitting from such a high-intensity photon source. The workshop brought together the communities directly using such sources for photo-production experiments, or for conversion into $K_L$ beams. The combination of high precision calorimetry and high intensity photon sources greatly enhances scientific benefit to (deep) exclusive processes like wide-angle and time-like Compton scattering. Potential prospects of such a high-intensity source with modern polarized targets were also discussed. The availability of $K_L$ beams would open new avenues for hadron spectroscopy, for example for the investigation of "missing" hyperon resonances, with potential impact on QCD thermodynamics and on freeze-out both in heavy ion collisions and in the early universe.
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- 2017
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240. Polarization Transfer Observables in Elastic Electron Proton Scattering at $Q^2 = $2.5, 5.2, 6.8, and 8.5 GeV$^2$
- Author
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Puckett, A.J.R., Brash, E.J., Jones, M.K., Luo, W., Meziane, M., Pentchev, L., Perdrisat, C.F., Punjabi, V., Wesselmann, F.R., Afanasev, A., Ahmidouch, A., Albayrak, I., Aniol, K.A., Arrington, J., Asaturyan, A., Baghdasaryan, H., Benmokhtar, F., Bertozzi, W., Bimbot, L., Bosted, P., Boeglin, W., Butuceanu, C., Carter, P., Chernenko, S., Christy, E., Commisso, M., Cornejo, J.C., Covrig, S., Danagoulian, S., Daniel, A., Davidenko, A., Day, D., Dhamija, S., Dutta, D., Ent, R., Frullani, S., Fenker, H., Frlez, E., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Goncharenko, Y., Hafidi, K., Hamilton, D., Higinbotham, D.W., Hinton, W., Horn, T., Hu, B., Huang, J., Huber, G.M., Jensen, E., Keppel, C., Khandaker, M., King, P., Kirillov, D., Kohl, M., Kravtsov, V., Kumbartzki, G., Li, Y., Mamyan, V., Margaziotis, D.J., Marsh, A., Matulenko, Y., Maxwell, J., Mbianda, G., Meekins, D., Melnik, Y., Miller, J., Mkrtchyan, A., Mkrtchyan, H., Moffit, B., Moreno, O., Mulholland, J., Narayan, A., Nedev, S., Nuruzzaman, N., Piasetzky, E., Pierce, W., Piskunov, N.M., Prok, Y., Ransome, R.D., Razin, D.S., Reimer, P., Reinhold, J., Rondon, O., Shabestari, M., Shahinyan, A., Shestermanov, K., Širca, S., Sitnik, I., Smykov, L., Smith, G., Solovyev, L., Solvignon, P., Subedi, R., Tomasi-Gustafsson, E., Vasiliev, A., Veilleux, M., Wojtsekhowski, B.B., Wood, S., Ye, Z., Zanevsky, Y., Zhang, X., Zhang, Y., Zheng, X., Zhu, L., Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Born approximation ,generalized parton distribution ,electron: trajectory ,FOS: Physical sciences ,Newport News CEBAF Linac ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,spin ,bremsstrahlung ,electron p: elastic scattering ,High Energy Physics - Experiment ,High Energy Physics - Experiment (hep-ex) ,hydrogen: liquid: target ,quark: constituent ,p: form factor: ratio ,quantum chromodynamics ,radiative correction ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,p: polarization ,p: recoil ,angular distribution ,Nuclear Experiment (nucl-ex) ,electron: beam ,Nuclear Experiment ,background: suppression ,lattice field theory ,helicity ,vector meson ,time projection chamber ,Dyson-Schwinger equation ,calorimeter: electromagnetic ,experimental equipment ,analyzing power ,asymmetry ,Jefferson Lab ,experimental results - Abstract
The GEp-III and GEp-2$\gamma$ experiments were carried out in Jefferson Lab's (JLab's) Hall C from 2007-2008, to extend the knowledge of $G_E^p/G_M^p$ to the highest practically achievable $Q^2$ and to search for effects beyond the Born approximation in polarization transfer observables of elastic $\vec{e}p$ scattering. This article reports an expanded description of the common experimental apparatus and data analysis procedure, and the results of a final reanalysis of the data from both experiments, including the previously unpublished results of the full-acceptance data of the GEp-2$\gamma$ experiment. The Hall C High Momentum Spectrometer detected and measured the polarization of protons recoiling elastically from collisions of JLab's polarized electron beam with a liquid hydrogen target. A large-acceptance electromagnetic calorimeter detected the elastically scattered electrons in coincidence to suppress inelastic backgrounds. The final GEp-III data are largely unchanged relative to the originally published results. The statistical uncertainties of the final GEp-2$\gamma$ data are significantly reduced at $\epsilon = 0.632$ and $0.783$ relative to the original publication. The decrease with $Q^2$ of $G_E^p/G_M^p$ continues to $Q^2 = 8.5$ GeV$^2$, but at a slowing rate relative to the approximately linear decrease observed in earlier Hall A measurements. At $Q^2 = 2.5$ GeV$^2$, the proton form factor ratio $G_E^p/G_M^p$ shows no statistically significant $\epsilon$-dependence, as expected in the Born approximation. The ratio $P_\ell/P_\ell^{Born}$ of the longitudinal polarization transfer component to its Born value shows an enhancement of roughly 1.4\% at $\epsilon = 0.783$ relative to $\epsilon = 0.149$, with $\approx 1.9\sigma$ significance based on the total uncertainty, implying a similar effect in the transverse component $P_t$ that cancels in the ratio $R$., Comment: 44 pages, 28 figures. Archival publication for the GEp-III and GEp-2gamma experiments that ran in Jefferson Lab's experimental Hall C from October, 2007 to June, 2008. v2: final manuscript as accepted by PRC. v3: Replaced figures 13 and 19 with corrected versions from published Erratum. Also made minor corrections to the text and to Table XI reflecting the corrections in the published Erratum
- Published
- 2017
241. First Direct Measurement of the Proton’s Weak Charge
- Author
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Androić, Darko, Armstrong, D. S., Asaturyan, A., Averett, T., Balewski, J., Bartlett, K., Beaufait, J., Beminiwattha, R. S., Benesch, J., Benmokhtar, F., Birchall, J., Carlini, R. D., Cates, G. D., Cornejo, J. C., Covrig, S., Dalton, M. M., Davis, C. A., Deconinck, W., Diefenbach, J., Dowd, J. F., Dunne, J. A., Dutta, D., Duvalla, W. S., Elaasar, M., Falk, W. R., Finn, J. M., Forest, T., Gal, C., Gaskell, D., Gericke, M. T. W., Grames, J., Gray, V. M., Grimm, K., Guo, F., Hoskins, J. R., Johnston, K., Jones, D., Jones, M., Jones, R., Kargiantoulakis, M., King, P. M., Korkmaz, E., Kowalski, S., Leacock, J., Leckey, J., Lee, A. R., Lee, J. H., Lee, L., MacEwan, S., Mack, D., Magee, J. A., Mahurin, R., Mammei, J., Martin, J. W., McHugh, M. J., Meekins, D., Mei, J., Michaels, R., Micherdzinska, A., Mkrtchyan, A., Mkrtchyan, H., Morgan, N., Myers, K. E., Narayan, A., Ndukum, L. Z., Nelyubin, V., Nuhait, H., Nuruzzaman, W.T.H van Oers, Page, S. A., Opper, A. K., Pan, J., Paschke, K. D., Phillips, S. K., Pitt, M. L., Poelker, M., Rajotte, J. F., Ramsay, W. D., Roche, J., Sawatzky, B., Ševa, Tomislav, Shabestari, M. H., Silwal, R., Šimičević, Neven, Smith, G. R., Solvignon, P., Spayde, D. T., Subedi, A., Subedi, R., Suleiman, R., Tadevosyan, V., Tobias, W. A., Tvaskis, V., Waidyawansa, B., Wang, P., Wells, S. P., Wood, S. A., Yang, S., Young, R. D., Zang, P., and Zhamkochyan, S.
- Subjects
PRIRODNE ZNANOSTI. Fizika ,q-weak experiment ,Nuclear Experiment ,NATURAL SCIENCES. Physics - Abstract
The Qweak experiment, which took data at Jefferson Lab in the period 2010 - 2012, will precisely determine the weak charge of the proton by measuring the parity-violating asymmetry in elastic e-p scattering at 1.1 GeV using a longitudinally polarized electron beam and a liquid hydrogen target at a low momentum transfer of Q2 = 0.025 (GeV/c)2. The weak charge of the proton is predicted by the Standard Model and any significant deviation would indicate physics beyond the Standard Model. The technical challenges and experimental apparatus for measuring the weak charge of the proton will be discussed, as well as the method of extracting the weak charge of the proton. The results from a small subset of the data, that has been published, will also be presented. Furthermore an update will be given of the current status of the data analysis.
- Published
- 2017
242. EXPRESSION OF CANCER-TESTIS GENES PRAME, NY-ESO1, GAGE1, MAGE A3, MAGE A6, MAGE A12, SSX1, SLLP1, PASD1 IN PATIENTS WITH MULTIPLE MYELOMA, THEIR INFLUENCE ON OVERALL SURVIVAL AND RELAPSE RATE
- Author
-
Solodovnik, A. A., primary, Mkrtchyan, H. S., additional, Misyurin, V. A., additional, Tikhonova, V. V., additional, Finashutina, Yu. P., additional, Kasatkina, N. N., additional, Solopova, O. N., additional, Votyakova, O. M., additional, Yakimovich, O. Yu., additional, Volodina, O. M., additional, Kichigina, M. Yu., additional, Medvedovskaya, E. G., additional, Antipova, A. S., additional, Zavodnova, I. Z., additional, Semenova, A. A., additional, Arakelyan, G. R., additional, Ryabukhina, Yu. E., additional, Kolomeytsev, O. A., additional, Shirin, A. D., additional, Osmanov, E. A., additional, and Misyurin, A. V., additional
- Published
- 2018
- Full Text
- View/download PDF
243. Measurements of the separated longitudinal structure function FL from hydrogen and deuterium targets at low Q2
- Author
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Tvaskis, V., primary, Tvaskis, A., additional, Niculescu, I., additional, Abbott, D., additional, Adams, G. S., additional, Afanasev, A., additional, Ahmidouch, A., additional, Angelescu, T., additional, Arrington, J., additional, Asaturyan, R., additional, Avery, S., additional, Baker, O. K., additional, Benmouna, N., additional, Berman, B. L., additional, Biselli, A., additional, Blok, H. P., additional, Boeglin, W. U., additional, Bosted, P. E., additional, Brash, E., additional, Breuer, H., additional, Chang, G., additional, Chant, N., additional, Christy, M. E., additional, Connell, S. H., additional, Dalton, M. M., additional, Danagoulian, S., additional, Day, D., additional, Dodario, T., additional, Dunne, J. A., additional, Dutta, D., additional, El Khayari, N., additional, Ent, R., additional, Fenker, H. C., additional, Frolov, V. V., additional, Gaskell, D., additional, Garrow, K., additional, Gilman, R., additional, Gueye, P., additional, Hafidi, K., additional, Hinton, W., additional, Holt, R. J., additional, Horn, T., additional, Huber, G. M., additional, Jackson, H., additional, Jiang, X., additional, Jones, M. K., additional, Joo, K., additional, Kelly, J. J., additional, Keppel, C. E., additional, Kuhn, J., additional, Kinney, E., additional, Klein, A., additional, Kubarovsky, V., additional, Liang, Y., additional, Lolos, G., additional, Lung, A., additional, Mack, D., additional, Malace, S., additional, Markowitz, P., additional, Mbianda, G., additional, McGrath, E., additional, Mckee, D., additional, Meekins, D. G., additional, Mkrtchyan, H., additional, Napolitano, J., additional, Navasardyan, T., additional, Niculescu, G., additional, Nozar, M., additional, Ostapenko, T., additional, Papandreou, Z., additional, Potterveld, D., additional, Reimer, P. E., additional, Reinhold, J., additional, Roche, J., additional, Rock, S. E., additional, Schulte, E., additional, Segbefia, E., additional, Smith, C., additional, Smith, G. R., additional, Stoler, P., additional, Tadevosyan, V., additional, Tang, L., additional, Telfeyan, J., additional, Todor, L., additional, Ungaro, M., additional, Uzzle, A., additional, Vidakovic, S., additional, Villano, A., additional, Vulcan, W. F., additional, Warren, G., additional, Wesselmann, F., additional, Wojtsekhowski, B., additional, Wood, S. A., additional, Yan, C., additional, and Zihlmann, B., additional
- Published
- 2018
- Full Text
- View/download PDF
244. Drift chamber calibration and particle identification in the P-349 experiment.
- Author
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Wrońska, A., Magiera, A., Przygoda, W., Alfs, D., Asaturyan, A., Carmignotto, M., Diermaier, M., Eyrich, W., Głowacz, B., Grzonka, D., Hauenstein, F., Horn, T., Kilian, K., Lersch, D., Malbrunot-Ettenauer, S., Mkrtchyan, A., Mkrtchyan, H., Moskal, P., Nadel-Turonski, P., and Oelert, W.
- Subjects
ANTIPROTONS ,ANTIPARTICLES ,BEVATRONS ,PLEISTOCENE stratigraphic geology ,NUCLEAR counters - Abstract
The goal of the P-349 experiment is to test whether 3.5 GeV/c antiprotons produced in high-energy proton-proton collisions are polarized in view of the preparation of a polarized antiproton beam. In this article, we present the details of the ongoing analysis focused on the drift chambers calibration and particle identification with DIRC. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
245. Polarization analysis of p̄ produced in pA collisions.
- Author
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Wrońska, A., Magiera, A., Przygoda, W., Grzonka, D., Alfs, D., Asaturyan, A., Carmignotto, M., Diermaier, M., Eyrich, W., Głowacz, B., Hauenstein, F., Horn, T., Kilian, K., Lersch, D., Malbrunot-Ettenauer, S., Mkrtchyan, A., Mkrtchyan, H., Moskal, P., Nadel-Turonski, P., and Oelert, W.
- Subjects
POLARIZATION (Nuclear physics) ,ANTIPARTICLES ,BEVATRONS ,ANTIPROTONS ,ANTIHYDROGEN - Abstract
A quite simple procedure for the generation of a polarized antiproton beam could be worked out if antiprotons are produced with some polarization. In order to investigate this possibility measurements of the polarization of produced antiprotons have been started at a CERN/PS test beam. The polarization will be determined from the asymmetry of the elastic antiproton scattering at a liquid hydrogen target in the CNI region for which the analyzing power is well known. The data are under analysis and an additional measurement is done in 2018. Details on the experiment and the ongoing data analysis will be given. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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246. Time-zero fission-fragment detector based on low-pressure multiwire proportional chambers
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Assamagan, K., Baker, K., Bayatyan, G., Carlini, R., Danagoulian, S., Eden, T., Egiyan, K., Ent, R., Fenker, H., Gan, L., Gasparian, A., Grigoryan, N., Greenwood, Z., Gueye, P., Hashimoto, O., Johnston, K., Keppel, C., Knyazyan, S., Majewski, S., Margaryan, A., Margaryan, Yu., Marikyan, G., Martoff, J., Mkrtchyan, H., Parlakyan, L., Sato, Y., Sawafta, R., Simicevic, N., Tadevosyan, V., Takahashi, T., Tang, L., Vartanyan, G., Vulcan, W., Wells, S., and Wood, S.
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- 1999
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247. Drift Chamber Calibration And Track Reconstruction In The P349 Antiproton Polarization Experiment
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Alfs, D., Glowacz, B., Moskal, P., Zielinski, M., Grzonka, D., Hauenstein, F., Kilian, K., Lersch, D., Ritman, J., Sefzick, T., Oelert, W., Diermaier, M., Widmann, E., Zmeskal, J., Wolke, Magnus, Nadel-Turonski, P., Carmignotto, M., Horn, T., Mkrtchyan, H., Asaturyan, A., Mkrtchyan, A., Tadevosyan, V., Zhamkochyan, S., Malbrunot-Ettenauer, S., Eyrich, W., Alfs, D., Glowacz, B., Moskal, P., Zielinski, M., Grzonka, D., Hauenstein, F., Kilian, K., Lersch, D., Ritman, J., Sefzick, T., Oelert, W., Diermaier, M., Widmann, E., Zmeskal, J., Wolke, Magnus, Nadel-Turonski, P., Carmignotto, M., Horn, T., Mkrtchyan, H., Asaturyan, A., Mkrtchyan, A., Tadevosyan, V., Zhamkochyan, S., Malbrunot-Ettenauer, S., and Eyrich, W.
- Abstract
The goal of the P349 experiment is to test whether the antiproton production process can be itself a source of antiproton polarization. In this article, we present the motivation and details of the performed measurement. We report on the status of the analysis focusing mainly on calibration of the drift chambers and 3d track reconstruction.
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- 2017
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248. Technical Supplement to 'Polarization Transfer Observables in Elastic Electron-Proton Scattering at Q$^2$ = 2.5, 5.2, 6.8, and 8.5 GeV$^2$'
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Puckett, A. J. R., Brash, E. J., Jones, M. K., Luo, W., Meziane, M., Pentchev, L., Perdrisat, C. F., Punjabi, V., Wesselmann, F. R., Ahmidouch, A., Albayrak, I., Aniol, K. A., Arrington, J., Asaturyan, A., Baghdasaryan, H., Benmokhtar, F., Bertozzi, W., Bimbot, L., Bosted, P., Boeglin, W., Butuceanu, C., Carter, P., Chernenko, S., Christy, E., Commisso, M., Cornejo, J. C., Covrig, S., Danagoulian, S., Daniel, A., Davidenko, A., Day, D., Dhamija, S., Dutta, D., Ent, R., Frullani, S., Fenker, H., Frlez, E., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Goncharenko, Y., Hafidi, K., Hamilton, D., Higinbotham, D. W., Hinton, W., Horn, T., Hu, B., Huang, J., Huber, G. M., Jensen, E., Keppel, C., Khandaker, M., King, P., Kirillov, D., Kohl, M., Kravtsov, V., Kumbartzki, G., Li, Y., Mamyan, V., Margaziotis, D. J., Marsh, A., Matulenko, Y., Maxwell, J., Mbianda, G., Meekins, D., Melnik, Y., Miller, J., Mkrtchyan, A., Mkrtchyan, H., Moffit, B., Moreno, O., Mulholland, J., Narayan, A., Nedev, S., Nurruzzaman, Piasetzky, E., Pierce, W., Piskunov, N. M., Prok, Y., Ransome, R. D., Razin, D. S., Reimer, P., Reinhold, J., Rondon, O., Shabestari, M., Shahinyan, A., Shestermanov, K., Sirca, S., Sitnik, I., Smykov, L., Smith, G., Solovyev, L., Solvignon, P., Subedi, R., Tomasi-Gustafsson, E., Vasiliev, A., Veilleux, M., Wojtsekhowski, B. B., Wood, S., Ye, Z., Zanevsky, Y., Zhang, X., Zhang, Y., Zheng, X., Zhu, L., Puckett, A. J. R., Brash, E. J., Jones, M. K., Luo, W., Meziane, M., Pentchev, L., Perdrisat, C. F., Punjabi, V., Wesselmann, F. R., Ahmidouch, A., Albayrak, I., Aniol, K. A., Arrington, J., Asaturyan, A., Baghdasaryan, H., Benmokhtar, F., Bertozzi, W., Bimbot, L., Bosted, P., Boeglin, W., Butuceanu, C., Carter, P., Chernenko, S., Christy, E., Commisso, M., Cornejo, J. C., Covrig, S., Danagoulian, S., Daniel, A., Davidenko, A., Day, D., Dhamija, S., Dutta, D., Ent, R., Frullani, S., Fenker, H., Frlez, E., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Goncharenko, Y., Hafidi, K., Hamilton, D., Higinbotham, D. W., Hinton, W., Horn, T., Hu, B., Huang, J., Huber, G. M., Jensen, E., Keppel, C., Khandaker, M., King, P., Kirillov, D., Kohl, M., Kravtsov, V., Kumbartzki, G., Li, Y., Mamyan, V., Margaziotis, D. J., Marsh, A., Matulenko, Y., Maxwell, J., Mbianda, G., Meekins, D., Melnik, Y., Miller, J., Mkrtchyan, A., Mkrtchyan, H., Moffit, B., Moreno, O., Mulholland, J., Narayan, A., Nedev, S., Nurruzzaman, Piasetzky, E., Pierce, W., Piskunov, N. M., Prok, Y., Ransome, R. D., Razin, D. S., Reimer, P., Reinhold, J., Rondon, O., Shabestari, M., Shahinyan, A., Shestermanov, K., Sirca, S., Sitnik, I., Smykov, L., Smith, G., Solovyev, L., Solvignon, P., Subedi, R., Tomasi-Gustafsson, E., Vasiliev, A., Veilleux, M., Wojtsekhowski, B. B., Wood, S., Ye, Z., Zanevsky, Y., Zhang, X., Zhang, Y., Zheng, X., and Zhu, L.
- Abstract
The GEp-III and GEp-2$\gamma$ experiments, carried out in Jefferson Lab's Hall C from 2007-2008, consisted of measurements of polarization transfer in elastic electron-proton scattering at momentum transfers of $Q^2 = 2.5, 5.2, 6.8,$ and $8.54$ GeV$^2$. These measurements were carried out to improve knowledge of the proton electromagnetic form factor ratio $R = \mu_p G_E^p/G_M^p$ at large values of $Q^2$ and to search for effects beyond the Born approximation in polarization transfer observables at $Q^2 = 2.5$ GeV$^2$. The final results of both experiments were reported in a recent archival publication. A full reanalysis of the data from both experiments was carried out in order to reduce the systematic and, for the GEp-2$\gamma$ experiment, statistical uncertainties. This technical note provides additional details of the final analysis omitted from the main publication, including the final evaluation of the systematic uncertainties., Comment: 33 pages, 33 figures. v3 = Final manuscript as accepted for publication in Nuclear Instruments and Methods Section A (in press)
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- 2017
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249. Polarization Transfer Observables in Elastic Electron Proton Scattering at $Q^2 = $2.5, 5.2, 6.8, and 8.5 GeV$^2$
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Puckett, A. J. R., Brash, E. J., Jones, M. K., Luo, W., Meziane, M., Pentchev, L., Perdrisat, C. F., Punjabi, V., Wesselmann, F. R., Afanasev, A., Ahmidouch, A., Albayrak, I., Aniol, K. A., Arrington, J., Asaturyan, A., Baghdasaryan, H., Benmokhtar, F., Bertozzi, W., Bimbot, L., Bosted, P., Boeglin, W., Butuceanu, C., Carter, P., Chernenko, S., Christy, E., Commisso, M., Cornejo, J. C., Covrig, S., Danagoulian, S., Daniel, A., Davidenko, A., Day, D., Dhamija, S., Dutta, D., Ent, R., Frullani, S., Fenker, H., Frlez, E., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Goncharenko, Y., Hafidi, K., Hamilton, D., Higinbotham, D. W., Hinton, W., Horn, T., Hu, B., Huang, J., Huber, G. M., Jensen, E., Keppel, C., Khandaker, M., King, P., Kirillov, D., Kohl, M., Kravtsov, V., Kumbartzki, G., Li, Y., Mamyan, V., Margaziotis, D. J., Marsh, A., Matulenko, Y., Maxwell, J., Mbianda, G., Meekins, D., Melnik, Y., Miller, J., Mkrtchyan, A., Mkrtchyan, H., Moffit, B., Moreno, O., Mulholland, J., Narayan, A., Nedev, S., Nuruzzaman, Piasetzky, E., Pierce, W., Piskunov, N. M., Prok, Y., Ransome, R. D., Razin, D. S., Reimer, P., Reinhold, J., Rondon, O., Shabestari, M., Shahinyan, A., Shestermanov, K., Sirca, S., Sitnik, I., Smykov, L., Smith, G., Solovyev, L., Solvignon, P., Subedi, R., Tomasi-Gustafsson, E., Vasiliev, A., Veilleux, M., Wojtsekhowski, B. B., Wood, S., Ye, Z., Zanevsky, Y., Zhang, X., Zhang, Y., Zheng, X., Zhu, L., Puckett, A. J. R., Brash, E. J., Jones, M. K., Luo, W., Meziane, M., Pentchev, L., Perdrisat, C. F., Punjabi, V., Wesselmann, F. R., Afanasev, A., Ahmidouch, A., Albayrak, I., Aniol, K. A., Arrington, J., Asaturyan, A., Baghdasaryan, H., Benmokhtar, F., Bertozzi, W., Bimbot, L., Bosted, P., Boeglin, W., Butuceanu, C., Carter, P., Chernenko, S., Christy, E., Commisso, M., Cornejo, J. C., Covrig, S., Danagoulian, S., Daniel, A., Davidenko, A., Day, D., Dhamija, S., Dutta, D., Ent, R., Frullani, S., Fenker, H., Frlez, E., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Goncharenko, Y., Hafidi, K., Hamilton, D., Higinbotham, D. W., Hinton, W., Horn, T., Hu, B., Huang, J., Huber, G. M., Jensen, E., Keppel, C., Khandaker, M., King, P., Kirillov, D., Kohl, M., Kravtsov, V., Kumbartzki, G., Li, Y., Mamyan, V., Margaziotis, D. J., Marsh, A., Matulenko, Y., Maxwell, J., Mbianda, G., Meekins, D., Melnik, Y., Miller, J., Mkrtchyan, A., Mkrtchyan, H., Moffit, B., Moreno, O., Mulholland, J., Narayan, A., Nedev, S., Nuruzzaman, Piasetzky, E., Pierce, W., Piskunov, N. M., Prok, Y., Ransome, R. D., Razin, D. S., Reimer, P., Reinhold, J., Rondon, O., Shabestari, M., Shahinyan, A., Shestermanov, K., Sirca, S., Sitnik, I., Smykov, L., Smith, G., Solovyev, L., Solvignon, P., Subedi, R., Tomasi-Gustafsson, E., Vasiliev, A., Veilleux, M., Wojtsekhowski, B. B., Wood, S., Ye, Z., Zanevsky, Y., Zhang, X., Zhang, Y., Zheng, X., and Zhu, L.
- Abstract
The GEp-III and GEp-2$\gamma$ experiments were carried out in Jefferson Lab's (JLab's) Hall C from 2007-2008, to extend the knowledge of $G_E^p/G_M^p$ to the highest practically achievable $Q^2$ and to search for effects beyond the Born approximation in polarization transfer observables of elastic $\vec{e}p$ scattering. This article reports an expanded description of the common experimental apparatus and data analysis procedure, and the results of a final reanalysis of the data from both experiments, including the previously unpublished results of the full-acceptance data of the GEp-2$\gamma$ experiment. The Hall C High Momentum Spectrometer detected and measured the polarization of protons recoiling elastically from collisions of JLab's polarized electron beam with a liquid hydrogen target. A large-acceptance electromagnetic calorimeter detected the elastically scattered electrons in coincidence to suppress inelastic backgrounds. The final GEp-III data are largely unchanged relative to the originally published results. The statistical uncertainties of the final GEp-2$\gamma$ data are significantly reduced at $\epsilon = 0.632$ and $0.783$ relative to the original publication. The decrease with $Q^2$ of $G_E^p/G_M^p$ continues to $Q^2 = 8.5$ GeV$^2$, but at a slowing rate relative to the approximately linear decrease observed in earlier Hall A measurements. At $Q^2 = 2.5$ GeV$^2$, the proton form factor ratio $G_E^p/G_M^p$ shows no statistically significant $\epsilon$-dependence, as expected in the Born approximation. The ratio $P_\ell/P_\ell^{Born}$ of the longitudinal polarization transfer component to its Born value shows an enhancement of roughly 1.4\% at $\epsilon = 0.783$ relative to $\epsilon = 0.149$, with $\approx 1.9\sigma$ significance based on the total uncertainty, implying a similar effect in the transverse component $P_t$ that cancels in the ratio $R$., Comment: 44 pages, 28 figures. Archival publication for the GEp-III and GEp-2gamma experiments that ran in Jefferson Lab's experimental Hall C from October, 2007 to June, 2008. v2: final manuscript as accepted by PRC. v3: Replaced figures 13 and 19 with corrected versions from published Erratum. Also made minor corrections to the text and to Table XI reflecting the corrections in the published Erratum
- Published
- 2017
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250. Measurement of Pion Transparency in Nuclei
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Arrington, J., primary, Asaturyan, R., additional, BORISSOV, A., additional, Baker, O., additional, Carlini, R., additional, Christy, M., additional, Cole, L., additional, Fenker, H., additional, Fissum, K., additional, Gao, H., additional, Gaskell, D., additional, Gasparian, A., additional, Gueye, P., additional, Hu, B., additional, Huber, G., additional, Jackson, C., additional, Jones, M., additional, Keppel, C., additional, Lorenzon, W., additional, Lung, A., additional, Mack, D., additional, Markowitz, P., additional, Meekins, D., additional, Mkrtchyan, H., additional, Nazaryan, V., additional, Smith, G., additional, Stepanyan, S., additional, Tadevosyan, V., additional, Tang, L., additional, Vulcan, W., additional, and Wood, S., additional
- Published
- 2001
- Full Text
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