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348 results on '"Echevarría M"'

1. Galactic star formation with NIKA2 (GASTON): Filament convergence and its link to star formation

Author

Peretto, N., Adam, R., Ade, P., Ajeddig, H., André, P., Artis, E., Aussel, H., Bacmann, A., Beelen, A., Benoît, A., Berta, S., Bing, L., Bourrion, O., Calvo, M., catalano, A., De Petris, M., Désert, F. -X., Doyle, S., Driessen, E. F. C., Gomez, A., Goupy, J., Kéruzoré, F., Kramer, C., Ladjelate, B., Lagache, G., Leclercq, S., Lestrade, J. -F., Macías-Pérez, J. -F., Maury, A., Mauskopf, P., Mayet, F., Monfardini, A., Muñoz-Echevarría, M., Perotto, L., Pisano, G., Ponthieu, N., Revéret, V., Rigby, A., Ristorcelli, I., Ritacco, A., Romero, C., Roussel, H., Ruppin, F., Schuster, K., Shu, S., Sievers, A., Tucker, C., and Zylka, R.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

In the past decade filaments have been recognised as a major structural element of the interstellar medium, the densest of these filaments hosting the formation of most stars. In some star-forming molecular clouds converging networks of filaments, also known as hub filament systems, can be found. These hubs are believed to be preferentially associated to massive star formation. As of today, there are no metrics that allow the systematic quantification of a filament network convergence. Here, we used the IRAM 30m NIKA2 observations of the Galactic plane from the GASTON large programme to systematically identify filaments and produce a filament convergence parameter map. We use such a map to show that: i. hub filaments represent a small fraction of the global filament population; ii. hubs host, in proportion, more massive and more luminous compact sources that non-hubs; iii. hub-hosting clumps are more evolved that non-hubs; iv. no discontinuities are observed in the properties of compact sources as a function of convergence parameter. We propose that the rapid global collapse of clumps is responsible for (re)organising filament networks into hubs and, in parallel, enhancing the mass growth of compact sources., Comment: To appear in the Proceedings of the International Conference entitled "mm Universe @ NIKA2", Rome (Italy), June 2021, EPJ Web of conferences

Published
2021
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2. Heavy-flavour studies with a high-luminosity fixed-target experiment at the LHC

Author

Trzeciak, B., Brodsky, S. J., Cavoto, G., Da Silva, C., Echevarria, M. G., Ferreiro, E. G., Hadjidakis, C., Haque, R., Hrivnacova, I., Kikola, D., Klein, A., Kurepin, A., Kusina, A., Lansberg, J. P., Lorce, C., Lyonnet, F., Makdisi, Y., Massacrier, L., Porteboeuf, S., Quintans, C., Rakotozafindrabe, A., Robbe, P., Scandale, W., Schienbein, I., Seixas, J., Shao, H. S., Signori, A., Topilskaya, N., Uras, A., Van Hulse, C., Wagner, J., Yamanaka, N., Yang, Z., and Zelenski, A.

Subjects
Nuclear Experiment
Abstract

Extraction of the multi-TeV proton and lead LHC beams with a bent crystal or by using an internal gas target allows one to perform the most energetic fixed-target experiment ever. pp, pd and pA collisions at $\sqrt{s}$ = 115 GeV and Pbp and PbA collisions at $\sqrt{s_{\rm{NN}}}$ = 72 GeV can be studied with high precision and modern detection techniques over a broad rapidity range. Using the LHCb or the ALICE detector in a fixed-target mode offers unprecedented possibilities to access heavy-flavour production in a new energy domain, half way between the SPS and the nominal RHIC energy. In this contribution, a review of projection studies for quarkonium and open charm and beauty production with both detector set-ups used with various nuclear targets and the LHC lead beams is presented., Comment: Hard Probes 2020 proceedings

Published
2021

3. Science Requirements and Detector Concepts for the Electron-Ion Collider: EIC Yellow Report

Author

Khalek, R. Abdul, Accardi, A., Adam, J., Adamiak, D., Akers, W., Albaladejo, M., Al-bataineh, A., Alexeev, M. G., Ameli, F., Antonioli, P., Armesto, N., Armstrong, W. R., Arratia, M., Arrington, J., Asaturyan, A., Asai, M., Aschenauer, E. C., Aune, S., Avagyan, H., Gayoso, C. Ayerbe, Azmoun, B., Bacchetta, A., Baker, M. D., Barbosa, F., Barion, L., Barish, K. N., Barry, P. C., Battaglieri, M., Bazilevsky, A., Behera, N. K., Benmokhtar, F., Berdnikov, V. V., Bernauer, J. C., Bertone, V., Bhattacharya, S., Bissolotti, C., Boer, D., Boglione, M., Bondì, M., Boora, P., Borsa, I., Bossù, F., Bozzi, G., Brandenburg, J. D., Brei, N., Bressan, A., Brooks, W. K., Bufalino, S., Bukhari, M. H. S., Burkert, V., Buttimore, N. H., Camsonne, A., Celentano, A., Celiberto, F. G., Chang, W., Chatterjee, C., Chen, K., Chetry, T., Chiarusi, T., Chien, Y. -T., Chiosso, M., Chu, X., Chudakov, E., Cicala, G., Cisbani, E., Cloet, I. C., Cocuzza, C., Cole, P. L., Colella, D., Collins II, J. L., Constantinou, M., Contalbrigo, M., Contin, G., Corliss, R., Cosyn, W., Courtoy, A., Crafts, J., Cruz-Torres, R., Cuevas, R. C., D'Alesio, U., Torre, S. Dalla, Das, D., Dasgupta, S. S., Da Silva, C., Deconinck, W., Defurne, M., DeGraw, W., Dehmelt, K., Del Dotto, A., Delcarro, F., Deshpande, A., Detmold, W., De Vita, R., Diefenthaler, M., Dilks, C., Dixit, D. U., Dulat, S., Dumitru, A., Dupré, R., Durham, J. M., Echevarria, M. G., Fassi, L. El, Elia, D., Ent, R., Esha, R., Ethier, J. J., Evdokimov, O., Eyser, K. O., Fanelli, C., Fatemi, R., Fazio, S., Fernandez-Ramirez, C., Finger, M., Finger Jr., M., Fitzgerald, D., Flore, C., Frederico, T., Friščić, I., Fucini, S., Furletov, S., Furletova, Y., Gal, C., Gamberg, L., Gao, H., Garg, P., Gaskell, D., Gates, K., Ducati, M. B. Gay, Gericke, M., da Silveira, G. Gil, Girod, F. -X., Glazier, D. I., Gnanvo, K., Goncalves, V. P., Gonella, L., Hernandez, J. O. Gonzalez, Goto, Y., Grancagnolo, F., Greiner, L. C., Guryn, W., Guzey, V., Hatta, Y., Hattawy, M., Hauenstein, F., He, X., Hemmick, T. K., Hen, O., Heyes, G., Higinbotham, D. W., Blin, A. N. Hiller, Hobbs, T. J., Hohlmann, M., Horn, T., Hou, T. -J., Huang, J., Huang, Q., Huber, G. M., Hyde, C. E., Iakovidis, G., Ilieva, Y., Jacak, B. V., Jacobs, P. M., Jadhav, M., Janoska, Z., Jentsch, A., Jezo, T., Jing, X., Jones, P. G., Joo, K., Joosten, S., Kafka, V., Kalantarians, N., Kalicy, G., Kang, D., Kang, Z. B., Kauder, K., Kay, S. J. D., Keppel, C. E., Kim, J., Kiselev, A., Klasen, M., Klein, S., Klest, H. T., Korchak, O., Kostina, A., Kotko, P., Kovchegov, Y. V., Krelina, M., Kuleshov, S., Kumano, S., Kumar, K. S., Kumar, R., Kumar, L., Kumerički, K., Kusina, A., Kutak, K., Lai, Y. S., Lalwani, K., Lappi, T., Lauret, J., Lavinsky, M., Lawrence, D., Lednicky, D., Lee, C., Lee, K., Lee, S. H., Levorato, S., Li, H., Li, S., Li, W., Li, X., Li, W. B., Ligonzo, T., Liu, H., Liu, M. X., Liu, X., Liuti, S., Liyanage, N., Lorcé, C., Lu, Z., Lucero, G., Lukow, N. S., Lunghi, E., Majka, R., Makris, Y., Mandjavidze, I., Mantry, S., Mäntysaari, H., Marhauser, F., Markowitz, P., Marsicano, L., Mastroserio, A., Mathieu, V., Mehtar-Tani, Y., Melnitchouk, W., Mendez, L., Metz, A., Meziani, Z. -E., Mezrag, C., Mihovilovič, M., Milner, R., Mirazita, M., Mkrtchyan, H., Mkrtchyan, A., Mochalov, V., Moiseev, V., Mondal, M. M., Morreale, A., Morrison, D., Motyka, L., Moutarde, H., Camacho, C. Muñoz, Murgia, F., Murray, M. J., Musico, P., Nadel-Turonski, P., Nadolsky, P. M., Nam, J., Newman, P. R., Neyret, D., Nguyen, D., Nocera, E. R., Noferini, F., Noto, F., Nunes, A. S., Okorokov, V. A., Olness, F., Osborn, J. D., Page, B. S., Park, S., Parker, A., Paschke, K., Pasquini, B., Paukkunen, H., Paul, S., Pecar, C., Pegg, I. L., Pellegrino, C., Peng, C., Pentchev, L., Perrino, R., Petriello, F., Petti, R., Pilloni, A., Pinkenburg, C., Pire, B., Pisano, C., Pitonyak, D., Poblaguev, A. A., Polakovic, T., Posik, M., Potekhin, M., Preghenella, R., Preins, S., Prokudin, A., Pujahari, P., Purschke, M. L., Pybus, J. R., Radici, M., Rajput-Ghoshal, R., Reimer, P. E., Rinaldi, M., Ringer, F., Roberts, C. D., Rodini, S., Rojo, J., Romanov, D., Rossi, P., Santopinto, E., Sarsour, M., Sassot, R., Sato, N., Schenke, B., Schmidke, W. B., Schmidt, I., Schmidt, A., Schmookler, B., Schnell, G., Schweitzer, P., Schwiening, J., Scimemi, I., Scopetta, S., Segovia, J., Seidl, R., Sekula, S., Semenov-Tian-Shanskiy, K., Shao, D. Y., Sherrill, N., Sichtermann, E., Siddikov, M., Signori, A., Singh, B. K., Širca, S., Slifer, K., Slominski, W., Sokhan, D., Sondheim, W. E., Song, Y., Soto, O., Spiesberger, H., Stasto, A. M., Stepanov, P., Sterman, G., Stevens, J. R., Stewart, I. W., Strakovsky, I., Strikman, M., Sturm, M., Stutzman, M. L., Sullivan, M., Surrow, B., Svihra, P., Syritsyn, S., Szczepaniak, A., Sznajder, P., Szumila-Vance, H., Szymanowski, L., Tadepalli, A. S., Takaki, J. D. Tapia, Tassielli, G. F., Terry, J., Tessarotto, F., Tezgin, K., Tomasek, L., Acosta, F. Torales, Tribedy, P., Tricoli, A., Triloki, Tripathi, S., Trotta, R. L., Tsai, O. D., Tu, Z., Tuvè, C., Ullrich, T., Ungaro, M., Urciuoli, G. M., Valentini, A., Vancura, P., Vandenbroucke, M., Van Hulse, C., Varner, G., Venugopalan, R., Vitev, I., Vladimirov, A., Volpe, G., Vossen, A., Voutier, E., Wagner, J., Wallon, S., Wang, H., Wang, Q., Wang, X., Wei, S. Y., Weiss, C., Wenaus, T., Wennlöf, H., Wickramaarachchi, N., Wikramanayake, A., Winney, D., Wong, C. P., Woody, C., Xia, L., Xiao, B. W., Xie, J., Xing, H., Xu, Q. H., Zhang, J., Zhang, S., Zhang, Z., Zhao, Z. W., Zhao, Y. X., Zheng, L., Zhou, Y., and Zurita, P.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Experiment, Nuclear Theory
Abstract

This report describes the physics case, the resulting detector requirements, and the evolving detector concepts for the experimental program at the Electron-Ion Collider (EIC). The EIC will be a powerful new high-luminosity facility in the United States with the capability to collide high-energy electron beams with high-energy proton and ion beams, providing access to those regions in the nucleon and nuclei where their structure is dominated by gluons. Moreover, polarized beams in the EIC will give unprecedented access to the spatial and spin structure of the proton, neutron, and light ions. The studies leading to this document were commissioned and organized by the EIC User Group with the objective of advancing the state and detail of the physics program and developing detector concepts that meet the emerging requirements in preparation for the realization of the EIC. The effort aims to provide the basis for further development of concepts for experimental equipment best suited for the science needs, including the importance of two complementary detectors and interaction regions. This report consists of three volumes. Volume I is an executive summary of our findings and developed concepts. In Volume II we describe studies of a wide range of physics measurements and the emerging requirements on detector acceptance and performance. Volume III discusses general-purpose detector concepts and the underlying technologies to meet the physics requirements. These considerations will form the basis for a world-class experimental program that aims to increase our understanding of the fundamental structure of all visible matter, Comment: 902 pages, 415 authors, 151 institutions

Published
2021
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4. On the physics potential to study the gluon content of proton and deuteron at NICA SPD

Author

Arbuzov, A., Bacchetta, A., Butenschoen, M., Celiberto, F. G., D'Alesio, U., Deka, M., Denisenko, I., Echevarria, M. G., Efremov, A., Ivanov, N. Ya., Guskov, A., Karpishkov, A., Klopot, Ya., Kniehl, B. A., Kotzinian, A., Kumano, S., Lansberg, J. P., Liu, Keh-Fei, Murgia, F., Nefedov, M., Parsamyan, B., Pisano, C., Radici, M., Rymbekova, A., Saleev, V., Shipilova, A., Song, Qin-Tao, and Teryaev, O.

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

The Spin Physics Detector (SPD) is a future multipurpose experiment foreseen to run at the NICA collider, which is currently under construction at the Joint Institute for Nuclear Research (JINR, Dubna, Russia). The physics program of the experiment is based on collisions of longitudinally and transversely polarized protons and deuterons at $\sqrt{s}$ up to 27 GeV and luminosity up to 10$^{32}$ cm$^{-2}$ s$^{-1}$. The SPD will operate as a universal facility for comprehensive study of unpolarized and polarized gluon content of the nucleon, using different complementary probes such as: charmonia, open charm, and prompt photon production processes. The aim of this work is to make a thorough review of the physics objectives that can potentially be addressed at the SPD, underlining related theoretical aspects and discussing relevant experimental results when available. Among different pertinent phenomena particular attention is drawn to the study of the gluon helicity, gluon Sivers and Boer-Mulders functions in the nucleon, as well as the gluon transversity distribution in the deuteron, via the measurement of specific single and double spin asymmetries., Comment: arXiv admin note: text overlap with arXiv:2102.00442

Published
2020

5. Quantum Simulation of Light-Front Parton Correlators

Author

Echevarria, M. G., Egusquiza, I. L., Rico, E., and Schnell, G.

Subjects
Quantum Physics, Condensed Matter - Mesoscale and Nanoscale Physics, High Energy Physics - Lattice, High Energy Physics - Phenomenology, High Energy Physics - Theory
Abstract

The physics of high-energy colliders relies on the knowledge of different non-perturbative parton correlators, such as parton distribution functions, that encode the information on universal hadron structure and are thus the main building blocks of any factorization theorem of the underlying process in such collision. These functions are given in terms of gauge-invariant light-front operators, they are non-local in both space and real time, and are thus intractable by standard lattice techniques due to the well-known sign problem. In this paper, we propose a quantum algorithm to perform a quantum simulation of these type of correlators, and illustrate it by considering a space-time Wilson loop. We discuss the implementation of the quantum algorithm in terms of quantum gates that are accessible within actual quantum technologies such as cold atoms setups, trapped ions or superconducting circuits., Comment: v2: minor changes, motivation improved, new figure added, accepted for publication in PRD; 13 pages, 5 figures. v1: 12 pages, 4 figures

Published
2020
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6. Spin Physics with a fixed-target experiment at the LHC

Author

Echevarria, M. G., Brodsky, S. J., Cavoto, G., Da Silva, C., Donato, F., Ferreiro, E. G., Hadjidakis, C., Hřivnáčová, I., Kikola, D., Klein, A., Kurepin, A., Kusina, A., Lansberg, J. P., Lorcé, C., Lyonnet, F., Makdisi, Y., Massacrier, L., Porteboeuf, S., Quintans, C., Rakotozafindrabe, A., Robbe, P., Scandale, W., Schienbein, I., Seixas, J., Shao, H. S., Signori, A., Topilskaya, N., Trzeciak, B., Uras, A., Wagner, J., Yamanaka, N., Yang, Z., and Zelenski, A.

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

The multi-TeV proton and ion beams of the LHC would allow for the most energetic fixed-target experiment ever. In particular, $pp$, $p$d and $p$A collisions could be performed at $\sqrt{s_{NN}}$ = 115~GeV, as well as Pb$p$ and PbA collisions at $\sqrt{s_{NN}}$ = 72~GeV, in a parasitic way by making use of the already existing LHCb and ALICE detectors in fixed-target mode. This would offer the possibility to carry out a ground-breaking physics program, to study the nucleon and nuclear structure at high $x$, the spin content of the nucleon and the phases of the nuclear matter from a new rapidity viewpoint. In this talk I focus on the spin physics axis of the full program developed so far by the AFTER@LHC study group., Comment: 6 pages, 4 figures. Proceedings of the 23rd International Spin Physics Symposium (SPIN 2018), Ferrara, Italy, September 10-14, 2018

Published
2019

7. High luminosity fixed-target experiment at the LHC

Author

Hadjidakis, C., Brodsky, S. J., Cavoto, G., Da Silva, C., Donato, F., Echevarria, M. G., Ferreiro, E. G., Hřivnáčová, I., Kikola, D., Klein, A., Kurepin, A., Kusina, A., Lansberg, J. P., Lorcé, C., Lyonnet, F., Makdisi, Y., Massacrier, L., Porteboeuf, S., Quintans, C., Rakotozafindrabe, A., Robbe, P., Scandale, W., Schienbein, I., Seixas, J., Shao, H. S., Signori, A., Topilskaya, N., Trzeciak, B., Uras, A., Wagner, J., Yamanaka, N., Yang, Z., and Zelenski, A.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

By extracting the beam with a bent crystal or by using an internal gas target, the multi-TeV proton and lead LHC beams allow one to perform the most energetic fixed-target experiments ever and to study $pp$, $p$d and $p$A collisions at $\sqrt{s_{NN}}=115$ GeV and Pb$p$ and PbA collisions at $\sqrt{s_{NN}}=72$ GeV with high precision and modern detection techniques. Such studies would address open questions in the domain of the nucleon and nucleus partonic structure at high-$x$, quark-gluon plasma and, by using longitudinally or transversally polarised targets, spin physics. In this paper, we will review the technical solutions to obtain a high-luminosity fixed-target experiment at the LHC and will discuss their possible implementations with the ALICE and LHCb detectors., Comment: 5 pages, 2 figures, 9th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions : Hard Probes 2018. (HP2018)

Published
2019

8. Ultra-peripheral-collision studies in the fixed-target mode with the proton and lead LHC beams

Author

Yamanaka, N., Hadjidakis, C., Kikola, D., Lansberg, J. P., Massacrier, L., Echevarria, M. G., Kusina, A., Schienbein, I., Seixas, J., Shao, H. S., Signori, A., Trzeciak, B., Brodsky, S. J., Cavoto, G., Da Silva, C., Donato, F., Ferreiro, E. G., Hrivnacova, I., Klein, A., Kurepin, A., Lorce, C., Lyonnet, F., Makdisi, Y., Porteboeuf, S., Quintans, C., Rakotozafindrabe, A., Robbe, P., Scandale, W., Topilskaya, N., Uras, A., Wagner, J., Yang, Z., and Zelenski, A.

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

We address the physics case related to the studies of ultra-peripheral pH, pPb, PbH, and PbPb collisions in the fixed-target mode at the LHC. In particular, we discuss how one can measure the gluon generalized parton distribution E_g(x,xi,t) in exclusive J/psi photoproduction with a transversely polarized hydrogen target., Comment: 6 pages, 3 figures, Proceedings of the International Conference on Hard & Electromagnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2018), 30 September-5 October 2018, Aix-Les-Bains, France

Published
2019

9. Probing the high-x content of the nuclei in the fixed-target mode at the LHC

Author

Kusina, A., Hadjidakis, C., Kikola, D., Lansberg, J. P., Massacrier, L., Echevarria, M. G., Schienbein, I., Seixas, J., Shao, H. S., Signori, A., Trzeciak, B., Brodsky, S. J., Cavoto, G., Da Silva, C., Donato, F., Ferreiro, E. G., Hrivnacova, I., Klein, A., Kurepin, A., Lorce, C., Lyonnet, F., Makdisi, Y., Porteboeuf, S., Quintans, C., Rakotozafindrabe, A., Robbe, P., Scandale, W., Topilskaya, N., Uras, A., Wagner, J., Yamanaka, N., Yang, Z., and Zelenski, A.

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

Using the LHCb and ALICE detectors in the fixed-target mode at the LHC offers unprecedented possibilities to study the quark, gluon and heavy-quark content of the proton and nuclei in the poorly known region of the high-momentum fractions. We review our projections for studies of Drell-Yan, charm, beauty and quarkonium production with both detector set-ups used with various nuclear targets and the LHC proton beams. Based on this, we show the expected improvement in the determination of the quark, charm and gluon proton and nuclear PDFs as well as discuss the implication for a better understanding of the cold-nuclear-matter effects in hard-probe production in proton-nucleus collisions., Comment: Proceedings of the Hard Probes 2018 conference

Published
2019

10. A fixed-target programme at the LHC for heavy-ion, hadron, spin and astroparticle physics: AFTER@LHC

Author

Kikoła, D., Brodsky, S. J., Cavoto, G., Da Silva, C., Donato, F., Echevarria, M. G., Ferreiro, E. G., Hadjidakis, C., Hřivnáčová, I., Klein, A., Kurepin, A., Kusina, A., Lansberg, J. P., Lorcé, C., Lyonnet, F., Makdisi, Y., Massacrier, L., Porteboeuf, S., Quintans, C., Rakotozafindrabe, A., Robbe, P., Scandale, W., Schienbein, I., Seixas, J., Shao, H. S., Signori, A., Topilskaya, N., Trzeciak, B., Uras, A., Wagner, J., Yamanaka, N., Yang, Z., and Zelenski, A.

Subjects
Nuclear Experiment
Abstract

Thanks to its multi-TeV LHC proton and lead beams, the LHC complex allows one to perform the most energetic fixed-target experiments ever and to study with high precision pp, pd and pA collisions at sqrt(s_NN) = 115 GeV and Pbp and PbA collisions at sqrt(s_NN) = 72 GeV. We present a selection of feasibility studies for the production of quarkonia, open heavy-flavor mesons as well as light-flavor hadrons in pA and PbA collisions using the LHCb and ALICE detectors in a fixed-target mode., Comment: Proceedings of the Quark Matter 2018 conference

Published
2018
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11. A Fixed-Target Programme at the LHC: Physics Case and Projected Performances for Heavy-Ion, Hadron, Spin and Astroparticle Studies

Author

Hadjidakis, C., Kikoła, D., Lansberg, J. P., Massacrier, L., Echevarria, M. G., Kusina, A., Schienbein, I., Seixas, J., Shao, H. S., Signori, A., Trzeciak, B., Brodsky, S. J., Cavoto, G., Da Silva, C., Donato, F., Ferreiro, E. G., Hrivnacova, I., Klein, A., Kurepin, A., Lyonnet, F., Makdisi, Y., Lorcé, C., Porteboeuf, S., Quintans, C., Rakotozafindrabe, A., Robbe, P., Topilskaya, N., Uras, A., Wagner, J., Yamanaka, N., Yang, Z., and Zelenski, A.

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

We review the context, the motivations and the expected performances of a comprehensive and ambitious fixed-target program using the multi-TeV proton and ion LHC beams. We also provide a detailed account of the different possible technical implementations ranging from an internal wire target to a full dedicated beam line extracted with a bent crystal. The possibilities offered by the use of the ALICE and LHCb detectors in the fixed-target mode are also reviewed., Comment: LaTeX, 115 pages. v2: version submitted to Physics Reports. A few figures added and some text improved. v3: accepted for publication in Physics Reports

Published
2018
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12. Physics perspectives with AFTER@LHC (A Fixed Target ExpeRiment at LHC)

Author

Massacrier, L., Anselmino, M., Arnaldi, R., Brodsky, S. J., Chambert, V., Da Silva, C., Didelez, J. P., Echevarria, M. G., Ferreiro, E. G., Fleuret, F., Gao, Y., Genolini, B., Hadjidakis, C., Hřivnáčová, I., Kikola, D., Klein, A., Kurepin, A., Kusina, A., Lansberg, J. P., Lorcé, C., Lyonnet, F., Martinez, G., Nass, A., Pisano, C., Robbe, P., Schienbein, I., Schlegel, M., Scomparin, E., Seixas, J., Shao, H. S., Signori, A., Steffens, E., Szymanowski, L., Topilskaya, N., Trzeciak, B., Uggerhøj, U. I., Uras, A., Ulrich, R., Wagner, J., Yamanaka, N., and Yang, Z.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

AFTER@LHC is an ambitious fixed-target project in order to address open questions in the domain of proton and neutron spins, Quark Gluon Plasma and high-$x$ physics, at the highest energy ever reached in the fixed-target mode. Indeed, thanks to the highly energetic 7 TeV proton and 2.76 A.TeV lead LHC beams, center-of-mass energies as large as $\sqrt{s_{NN}}$ = 115 GeV in pp/pA and $\sqrt{s_{NN}}$ = 72 GeV in AA can be reached, corresponding to an uncharted energy domain between SPS and RHIC. We report two main ways of performing fixed-target collisions at the LHC, both allowing for the usage of one of the existing LHC experiments. In these proceedings, after discussing the projected luminosities considered for one year of data taking at the LHC, we will present a selection of projections for light and heavy-flavour production., Comment: Proceeding of SQM2017 conference

Published
2017
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13. Single-Transverse-Spin-Asymmetry studies with a fixed-target experiment using the LHC beams (AFTER@LHC)

Author

Lansberg, J. P., Anselmino, M., Arnaldi, R., Brodsky, S. J., Chambert, V., Da Silva, C., Didelez, J. P., Echevarria, M. G, Ferreiro, E. G., Fleuret, F., Gao, Y., Genolini, B., Hadjidakis, C., Hřivnáčová, I., Kikola, D., Klein, A., Kurepin, A., Kusina, A., Lorcé, C., Lyonnet, F., Massacrier, L., Nass, A., Pisano, C., Robbe, P., Schienbein, I., Schlegel, M., Scomparin, E., Seixas, J., Shao, H. S., Signori, A., Steffens, E., Topilskaya, N., Trzeciak, B., Uggerhøj, U. I., Uras, A., Ulrich, R., and Yang, Z.

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

We discuss the potential of AFTER@LHC to measure single-transverse-spin asymmetries in open-charm and bottomonium production. With a HERMES-like hydrogen polarised target, such measurements over a year can reach precisions close to the per cent level. This is particularly remarkable since these analyses can probably not be carried out anywhere else, Comment: 8 pages, 3 figures, 1 table. LaTeX, uses PoS.cls (included). Contribution to the proceedings of the XXIV International Workshop on Deep-Inelastic Scattering and Related Subject - DIS 2016, 11-15 April 2016, DESY Hamburg, Germany

Published
2016

14. Physics case for a polarised target for AFTER@LHC

Author

Lansberg, J. P., Anselmino, M., Arnaldi, R., Brodsky, S. J., Chambert, V., Didelez, J. P., Echevarria, M. G, Ferreiro, E. G., Fleuret, F., Gao, Y., Genolini, B., Hadjidakis, C., Hrivnacova, I., Kikola, D., Kurepin, A., Lorce, C., Massacrier, L., Nass, A., Pisano, C., Schienbein, I., Schlegel, M., Scomparin, E., Seixas, J., Signori, A., Steffens, E., Topilskaya, N., Uggerhoej, B. Trzeciak U. I., Uras, A., Ulrich, R., and Yang, Z.

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

We review a number of ideas put forward in favour of the use of a polarised target along with the proposed idea of a fixed-target experiment using the LHC beams -- AFTER@LHC. A number of recent studies have shown that single transverse-spin asymmetries (STSAs) are large enough to be precisely measured in the region accessible with AFTER@LHC, in particular as regards the Drell-Yan process as well as single-pion, isolated-photon and jet production. AFTER@LHC with a polarised target would also be the ideal experimental set-up to measure the gluon Sivers effect via a number of original quarkonium STSA studies. We discuss first figures-of-merit based on simulations for AFTER@LHC with a polarised target., Comment: 7 pages, 2 figures, 1 table, LaTeX. Proceedings of the XVIth International Workshop in Polarized Sources, Targets, and Polarimetry, PSTP2015, 14-18 September 2015, Bochum, Germany

Published
2016

15. Transverse momentum dependent (TMD) parton distribution functions: status and prospects

Author

Angeles-Martinez, R., Bacchetta, A., Balitsky, I. I., Boer, D., Boglione, M., Boussarie, R., Ceccopieri, F. A., Cherednikov, I. O., Connor, P., Echevarria, M. G., Ferrera, G., Luyando, J. Grados, Hautmann, F., Jung, H., Kasemets, T., Kutak, K., Lansberg, J. P., Lelek, A., Lykasov, G., Martinez, J. D. Madrigal, Mulders, P. J., Nocera, E. R., Petreska, E., Pisano, C., Placakyte, R., Radescu, V., Radici, M., Schnell, G., Scimemi, I., Signori, A., Szymanowski, L., Monfared, S. Taheri, Van der Veken, F. F., van Haevermaet, H. J., Van Mechelen, P., Vladimirov, A. A., and Wallon, S.

Subjects
High Energy Physics - Phenomenology
Abstract

We provide a concise overview on transverse momentum dependent (TMD) parton distribution functions, their application to topical issues in high-energy physics phenomenology, and their theoretical connections with QCD resummation, evolution and factorization theorems. We illustrate the use of TMDs via examples of multi-scale problems in hadronic collisions. These include transverse momentum q_T spectra of Higgs and vector bosons for low q_T, and azimuthal correlations in the production of multiple jets associated with heavy bosons at large jet masses. We discuss computational tools for TMDs, and present an application of a new tool, TMDlib, to parton density fits and parameterizations., Comment: 20 pages

Published
2015
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16. Legume consumption is inversely associated with type 2 diabetes incidence in adults: A prospective assessment from the PREDIMED study

Author

Serra-Mir, M., Pérez-Heras, A., Viñas, C., Casas, R., Medina-Renom, A., Baena, J.M., García, M., Oller, M., Amat, J., Duaso, I., García, Y., Iglesias, C., Simón, C., Quinzavos, L., Parra, L., Liroz, M., Benavent, J., Clos, J., Pla, I., Amorós, M., Bonet, M.T., Martín, M.T., Sánchez, M.S., Altirriba, J., Manzano, E., Altés, A., Cofán, M., Valls-Pedret, C., Sala-Vila, A., Doménech, M., Bulló, M., Babio, N., Basora, J., González, R., Molina, C., Márquez, F., Martínez, P., Ibarrola, N., Sorlí, M., García Roselló, J., Castro, A., Martin, F., Tort, N., Isach, A., Guasch-Ferre, M., Cabré, J.J., Mestres, G., Paris, F., Llauradó, M., Pedret, R., Basells, J., Vizcaino, J., Segarra, R., Frigola, J., Costa-Vizcaino, J., Salas-Huetos, A., Boj, J., Montañes, D., Papandreou, Christopher, Fernández-Ballart, J., Carrasco, P., Ortega-Azorín, C., Asensio, E.M., Osma, R., Barragán, R., Francés, F., Guillén, M., González, J.I., Sáiz, C., Portolés, O., Giménez, F.J., Coltell, O., Fernández-Carrión, R., Guillem-Sáiz, P., González-Monje, I., Quiles, L., Pascual, V., Riera, C., Pages, M.A., Godoy, D., Carratalá-Calvo, A., Sánchez-Navarro, S., Valero-Barceló, C., Tello, S., Vila, J., de la Torre, R., Muñoz-Aguayo, D., Elosua, R., Marrugat, J., Schröder, H., Molina, N., Maestre, E., Rovira, A., Castañer, O., Farré, M., Toledo, E., Ruiz-Canela, M., Sanjulián, B., Sánchez-Tainta, A., Eguaras, S., Martí, A., Buil-Cosiales, P., SerranoMartínez, M., Diez-Espino, J., García-Arellano, A., Martínez-Lapiscina, E.H., Goñi, E., Vázquez, Z., Berrade, N., Extremera-Urabayen, V., Arroyo-Azpa, C., García-Pérez, L., Villanueva-Telleria, J., Cortés-Ugalde, F., Sagredo-Arce, T., Vigata-López, M.D., Arceiz Campo, M.T., Urtasun-Samper, A., Gueto Rubio, M.V., Churio-Beraza, B., Arós, F., Salaverria, I., del Hierro, T., Algorta, J., Francisco, S., Alonso-Gómez, A., Sanz, E., Rekondo, J., Belló, M.C., Loma-Osorio, A., Gómez-Gracia, E., Wärnberg, J., Benítez Pont, R., Bianchi Alba, M., Gómez-Huelgas, R., Martínez-González, J., Velasco García, V., de Diego Salas, J., Baca Osorio, A., Gil Zarzosa, J., Sánchez Luque, J.J., Vargas López, E., Ruiz-Gutiérrez, V., Sánchez Perona, J., Montero Romero, E., García-García, M., Jurado-Ruiz, E., Fiol, M., Romaguera, D., García-Valdueza, M., Moñino, M., Munuera, S., Vivó, M., Bestard, F., Munar, J.A., Coll, L., Proenza, A., Prieto, R., Frontera, G., Fiol, F., Ginard, M., Jover, A., García, J., Santos-Lozano, J.M., Ortega-Calvo, M., Mellado, L., García-Corte, F.J., Román, P., Iglesias, P., Corchado, Y., Miró-Moriano, L., Domínguez-Espinaco, C., Lozano-Rodriguez, J.M., Vaquero-Diaz, S., López- Sabater, M.C., Castellote-Bargalló, A.I., Quifer-Rada, P., Tresserra-Rimbau, A., Álvarez-Pérez, J., Díaz-Benítez, E.M., Sánchez-Villegas, A., Casañas-Quintana, L.T., Pérez-Cabrera, J., Ruano-Rodríguez, C., Bautista-Castaño, I., Sarmiento de la Fe, F., García Pastor, J.A., Díaz-González, B.V., Castillo Anzalas, J.M., Sosa-Also, R.E., Medina-Ponce, J., de la Cruz, E., Fanlo-Maresma, M., Galera, A., Trias, F., Sarasa, I., Corbella, E., Corbella, X., Cabezas, C., Vinyoles, E., Rovira, M.A., García, L., Flores, G., Verdú, J.M., Baby, P., Ramos, A., Mengual, L., Roura, P., Yuste, M.C., Guarner, A., Santamaría, M.I., Mata, M., de Juan, C., Brau, A., Tur, J.A., Portillo, M.P., Sáez, G., Aldamiz-Echevarría, M., Alonso-Gómez, A.M., Berjón, J., Forga, L., Gállego, J., García-Layana, A., Larrauri, A., Portu-Zapirain, J., Timiraus-Fernández, J., Becerra-Tomás, Nerea, Díaz-López, Andrés, Rosique-Esteban, Núria, Ros, Emilio, Buil-Cosiales, Pilar, Corella, Dolores, Estruch, Ramon, Fitó, Montserrat, Serra-Majem, Lluís, Arós, Fernando, Lamuela-Raventós, Rosa Maria, Fiol, Miquel, Santos-Lozano, José Manuel, Díez-Espino, Javier, Portoles, Olga, and Salas-Salvadó, Jordi

Published
2018
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20. Estudio multicéntrico español para la predicción del riesgo perioperatorio de accidente cerebrovascular tras cirugía de bypass coronario aislada: el modelo PACK2

Author

Martín, E., Hornero, F., Rodríguez, R., Castellà, M., Porras, C., Romero, B., Maroto, L., Pérez de la Sota, E., Echevarría, M., Dalmau, M.J., Díez, L., Buendía, J., Enríquez, F., Castaño, M., Reyes, G., Ginel, A., Pérez, M., García, R., Barquero, J., Heredero, A., Jiménez, A., Castedo, E., Lugo, J., Pradas, G., Gómez, M., and Rieta, J.J.

Published
2014
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33. XV Jornadas de Educación Emocional. La formación del educador en Educación Emocional

Author

Aldámiz-Echevarría, M. del Mar, Barredo Gutiérrez, Blanca, Bisquerra Alzina, Rafael, García Aguilar, Núria, Giner, Antoni, Pérez Escoda, Núria, and Tey, Amèlia

Subjects
Congressos, Emotional education, Educational innovations, Educació emocional, Innovacions educatives, Congresses
Abstract

L’educació emocional té com a objectiu el desenvolupament de competències emocionals, que són competències bàsiques per a la vida i un aspecte important del desenvolupament integral de la personalitat. La persona amb competències emocionals està en millors condicions per fer front als reptes de la vida i contribuir de manera significativa a la construcció del benestar personal i social. Investigacions recents han posat de manifest els efectes altament positius de l’educació emocional en la millora del clima d’aula i de centre, la disminució de conflictivitat, comportament disruptiu, conflictes, violència, assetjament escolar, etc., així com una millora del rendiment acadèmic. Però, per assolir aquest objectiu, cal que hi hagi uns educadors sensibilitzats i formats per a una posada en pràctica eficient. La formació dels educadors en educació emocional és un repte que queda pendent. Aquesta és la temàtica de les XV Jornades d’Educació Emocional, on ens plantegem una sèrie de qüestions. Quines són les estratègies més eficients per a la formació dels educadors? Com s’haurien d’implicar les universitats en la formació inicial dels educadors en competències emocionals? Ha arribat l’hora de posar almenys una assignatura obligatòria sobre aquesta temàtica? Hi ha educadors sensibilitzats i formats per fer-ho? La formació continuada dels educadors en exercici s’ha de deixar a la seva lliure elecció, o seria millor una formació dirigida a tot el personal dels centres? Quin és el model que convé promoure? Què diuen les investigacions científiques que convé tenir present en el moment d’enfocar el futur de la formació dels educadors? De quina manera es pot formar millor els educadors que, pel seu compte, volen posar en pràctica l’educació emocional a la seva aula de manera fonamentada i eficient?...

Published
2020

34. XV Jornades d’Educació Emocional, La formació de l’educador en Educació Emocional

Author

Aldámiz-Echevarría, M. del Mar, Barredo Gutiérrez, Blanca, Bisquerra Alzina, Rafael, García Aguilar, Núria, Giner, Antoni, Pérez Escoda, Núria, and Tey, Amèlia

Subjects
Congressos, Emotional education, Educational innovations, Educació emocional, Innovacions educatives, Congresses
Abstract

L’educació emocional té com a objectiu el desenvolupament de competències emocionals, que són competències bàsiques per a la vida i un aspecte important del desenvolupament integral de la personalitat. La persona amb competències emocionals està en millors condicions per fer front als reptes de la vida i contribuir de manera significativa a la construcció del benestar personal i social. Investigacions recents han posat de manifest els efectes altament positius de l’educació emocional en la millora del clima d’aula i de centre, la disminució de conflictivitat, comportament disruptiu, conflictes, violència, assetjament escolar, etc., així com una millora del rendiment acadèmic. Però, per assolir aquest objectiu, cal que hi hagi uns educadors sensibilitzats i formats per a una posada en pràctica eficient. La formació dels educadors en educació emocional és un repte que queda pendent. Aquesta és la temàtica de les XV Jornades d’Educació Emocional, on ens plantegem una sèrie de qüestions. Quines són les estratègies més eficients per a la formació dels educadors? Com s’haurien d’implicar les universitats en la formació inicial dels educadors en competències emocionals? Ha arribat l’hora de posar almenys una assignatura obligatòria sobre aquesta temàtica? Hi ha educadors sensibilitzats i formats per fer-ho? La formació continuada dels educadors en exercici s’ha de deixar a la seva lliure elecció, o seria millor una formació dirigida a tot el personal dels centres? Quin és el model que convé promoure? Què diuen les investigacions científiques que convé tenir present en el moment d’enfocar el futur de la formació dels educadors? De quina manera es pot formar millor els educadors que, pel seu compte, volen posar en pràctica l’educació emocional a la seva aula de manera fonamentada i eficient?...

Published
2020

46. Mid- to long-term results of SuPerLap single-port treatment in inguinal hernia.

Author

Hernández-Rodríguez, R. A., Echevarría, M. J. Rosell, Díaz, F. D. Ravelo, Villamil, V., and Figueroa, E. L. Pérez Etchepare

Subjects
*LONG-term health care, *INGUINAL hernia, *CHILD patients, *LAPAROSCOPIC surgery, *HOSPITALS
Abstract

Introduction. Laparoscopic treatment of inguinal hernia is gaining popularity in many hospitals, but the use of working channel scopes is not as widely extended. We present our long-term experience with the SuPerLap (laparoscopic-assisted percutaneous suture) technique described by Rosell et al.(1) for epigastric hernia repair in the percutaneous, single-port treatment of inguinal hernia using working channel scopes. Materials and methods. A retrospective analysis of a series of male patients with congenital inguinal hernia undergoing surgery from February 2017 to December 2020 was carried out. A 5 mm- 0º pleuroscope with a 3.5 mm working channel, a 20 G epidural needle, a 36 cm/3.5 mm laparoscopic Maryland dissector, and 3-0 polypropylene and polyester sutures were used. Results. 384 inguinal hernia repairs using the SuPerLap technique were performed in 295 male patients -- 206 unilateral repairs and 89 bilateral repairs. In 24 bilateral cases (26.95%), preoperative diagnosis had been unilateral. Mean age was two years (2 weeks-13 years). Mean operating time was 14 minutes (6-50 min) for unilateral repair, and 27 minutes (14-80 min) for bilateral repair. There were two cases of epigastric vessel damage, and one case of early recurrence in a newborn, who successfully underwent re-intervention using the SuPerLap technique. No late complications were recorded after a mean follow-up of 1-36 months. Conclusions. Working channel scopes using the SuPerLap technique avoid additional ports in inguinal hernia repair. They allow for excellent functional results, without visible scars, and minimize spermatic cord manipulation. Laparoscopy allows previously undiagnosed defects to be concomitantly treated. [ABSTRACT FROM AUTHOR]

Published
2022
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48. Acceptability and feasibility of a virtual community of practice to primary care professionals regarding patient empowerment : A qualitative pilot study

Author

Bermejo-Caja, C. J., Koatz, Débora, Orrego, Carola, Perestelo-Pérez, Lilisbeth, González-González, A. I., Ballester, Marta, Pacheco-Huergo, V., del Rey-Granado, Yolanda, Muñoz-Balsa, M., Ramírez-Puerta, A. B., Canellas-Criado, Y., Pérez-Rivas, F. J., Toledo-Chávarri, A., Martínez-Marcos, M., Alejo-Díaz-Zorita, C., Barbero-Macías, C. A., Borrell-Punzón, F., Bueno-Rodriguez, B., Colmena-Martin, B., Del Valle-De Joz, I., Gamboa-Puñal, J. C., García-Valverde, C., Gómez-Garzón, L. M., Gómez-López, A., Hernaz-Guijo, A., Herrera-León, W. N., Iniesta-González, I., Leza-Leza, M., Melchor-Canelo, M. A., Muñoz-Quirós-Aliaga, S., Oria-Fernández, Á., Pertierra-Galindo, N., Prieto-Barbosa, M. D., Robledo-Vázquez, M., Ruiz-López, M., Sánchez-Cruz, M. C., Sánchez-De-Eusebio, M. Á., Seijas-Martínez-Echevarría, M. J., Tovar-García, C. P., Vicente-Diez, J. I., Villanueva-Sanz, C., Universitat Autònoma de Barcelona, and UAM. Departamento de Enfermería

Subjects
Adult, Male, Attitude of Health Personnel, media_common.quotation_subject, Nurses, Pilot Projects, Health informatics, Education, Distance, 03 medical and health sciences, 0302 clinical medicine, General Practitioners, Medicine, Humans, Learning, 030212 general & internal medicine, Patient participation, Empowerment, Qualitative Research, media_common, Pilot study, Medical education, Virtual system, Primary Health Care, business.industry, 030503 health policy & services, Health Policy, Nursing research, lcsh:Public aspects of medicine, lcsh:RA1-1270, Middle Aged, Focus group, Virtual community of practice, Chronic Disease, Feasibility Studies, Enfermería, Female, Thematic analysis, Patient Participation, Healthcare professional attitudes, 0305 other medical science, business, Primary healthcare, Qualitative research, Research Article
Abstract

Background: Virtual communities of practice (vCoPs) facilitate online learning via the exchange of experiences and knowledge between interested participants. Compared to other communities, vCoPs need to overcome technological structures and specific barriers. Our objective was to pilot the acceptability and feasibility of a vCoP aimed at improving the attitudes of primary care professionals to the empowerment of patients with chronic conditions. Methods: We used a qualitative approach based on 2 focus groups: one composed of 6 general practitioners and the other of 6 practice nurses. Discussion guidelines on the topics to be investigated were provided to the moderator. Sessions were audio-recorded and transcribed verbatim. Thematic analysis was performed using the ATLAS-ti software. Results: The available operating systems and browsers and the lack of suitable spaces and time were reported as the main difficulties with the vCoP. The vCoP was perceived to be a flexible learning mode that provided up-to-date resources applicable to routine practice and offered a space for the exchange of experiences and approaches. Conclusions: The results from this pilot study show that the vCoP was considered useful for learning how to empower patients. However, while vCoPs have the potential to facilitate learning and as shown create professional awareness regarding patient empowerment, attention needs to be paid to technological and access issues and the time demands on professionals. We collected relevant inputs to improve the features, content and educational methods to be included in further vCoP implementation. Trial registration: ClinicalTrials.gov, NCT02757781. Registered on 25 April 2016., This study was financed by Instituto de Salud Carlos III and Cofinanced by Fondo Europeo de Desarrollo Regional (FEDER). Ministerio de Economía y Competitividad. Gobierno de España. (PI15/00164, PI15/00586, PI15/00566)

Published
2019

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