969 results on '"Vicini, P"'
Search Results
2. Numerical integration of the double- and triple-box integrals using threshold subtraction
- Author
-
Kermanschah, Dario and Vicini, Matilde
- Subjects
High Energy Physics - Phenomenology - Abstract
We numerically integrate finite two- and three-loop scalar integrals using the threshold subtraction method. This represents a first step towards extending our calculation of the $N_f$-part to the full NNLO virtual corrections for the production of massive vector bosons., Comment: Contribution to proceedings of the Loops and Legs in Quantum Field Theory conference (LL2024)
- Published
- 2024
3. $N_f$-contribution to the virtual correction for electroweak vector boson production at NNLO
- Author
-
Kermanschah, Dario and Vicini, Matilde
- Subjects
High Energy Physics - Phenomenology - Abstract
Multi-loop scattering amplitudes are difficult to evaluate due to singularities of the integrals involved, especially with increasing number of loops, external legs, and mass scales. For the first time at two loops, we enable their direct numerical integration by tackling infrared, ultraviolet and threshold singularities simultaneously using local subtractions. We demonstrate the feasibility of our approach by calculating previously unknown perturbative corrections for processes of interest to the Large Hadron Collider., Comment: 52 pages, 4 figures, 7 tables
- Published
- 2024
4. 3D Adaptive VEM with stabilization-free a posteriori error bounds
- Author
-
Berrone, Stefano, Fassino, Davide, and Vicini, Fabio
- Subjects
Mathematics - Numerical Analysis ,65N30, 65N50 - Abstract
The present paper extends the theory of Adaptive Virtual Element Methods (AVEMs) to the three-dimensional meshes showing the possibility to bound the stabilization term by the residual-type error estimator. This new bound enables a stabilization-free a posteriori control for the energy error. Following the recent studies for the bi-dimensional case, we investigate the case of tetrahedral elements with aligned edges and faces. We believe that the AVEMs can be an efficient strategy to address the mesh conforming requirements of standard three-dimensional Adaptive Finite Element Methods (AFEMs), which typically extend the refinement procedure to non-marked mesh cells. Indeed, numerical tests on the Fichera corner shape domain show that this method can reduce the number of three-dimensional cells generated in the refinement process by about 30% with compared to standard AFEMs, for a given error threshold.
- Published
- 2024
5. Two-loop mixed QCD-EW corrections to charged current Drell-Yan
- Author
-
Armadillo, Tommaso, Bonciani, Roberto, Devoto, Simone, Rana, Narayan, and Vicini, Alessandro
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Experiment ,High Energy Physics - Theory - Abstract
We present the two-loop mixed strong-electroweak virtual corrections to the charged current Drell-Yan process. The final-state collinear singularities are regularised by the lepton mass. The evaluation of all the relevant Feynman integrals, including those with up to two different internal massive lines, has been worked out relying on semi-analytical techniques, using complex-valued masses. We can provide, at any arbitrary phase-space point, the solution as a power series in the $W$-boson mass, around a reference value. Starting from these expansions, we can prepare a numerical grid for any value of the $W$-boson mass within their radius of convergence in a negligible amount of time., Comment: 26 pages, 7 figures. arXiv admin note: text overlap with arXiv:2201.01754
- Published
- 2024
6. A new hybrid gadolinium nanoparticles-loaded polymeric material for neutron detection in rare event searches
- Author
-
Collaboration, DarkSide-20k, Acerbi, F., Adhikari, P., Agnes, P., Ahmad, I., Albergo, S., Albuquerque, I. F., Alexander, T., Alton, A. K., Amaudruz, P., Angiolilli, M., Aprile, E., Ardito, R., Corona, M. Atzori, Auty, D. J., Ave, M., Avetisov, I. C., Azzolini, O., Back, H. O., Balmforth, Z., Olmedo, A. Barrado, Barrillon, P., Batignani, G., Bhowmick, P., Bocci, V., Bonivento, W., Bottino, B., Boulay, M. G., Buchowicz, A., Bussino, S., Busto, J., Cadeddu, M., Cadoni, M., Calabrese, R., Camillo, V., Caminata, A., Canci, N., Capra, A., Caravati, M., Cárdenas-Montes, M., Cargioli, N., Carlini, M., Castellani, A., Castello, P., Cavalcante, P., Cavallo, D., Cebrian, S., Ruiz, J. Cela, Chashin, S., Chepurnov, A., Cifarelli, L., Cintas, D., Citterio, M., Cleveland, B., Coadou, Y., Cocco, V., Colaiuda, D., Vilda, E. Conde, Consiglio, L., Costa, B. S., Czubak, M., D'Auria, S., Rolo, M. D. Da Rocha, Darbo, G., Davini, S., De Cecco, S., De Guido, G., Dellacasa, G., Derbin, A. V., Devoto, A., Di Capua, F., Di Ludovico, A., Di Noto, L., Di Stefano, P., Dias, L. K., Mairena, D. Díaz, Ding, X., Dionisi, C., Dolganov, G., Dordei, F., Dronik, V., Elersich, A., Ellingwood, E., Erjavec, T., Diaz, M. Fernandez, Ficorella, A., Fiorillo, G., Franchini, P., Franco, D., Gatti, H. Frandini, Frolov, E., Gabriele, F., Gahan, D., Galbiati, C., Galinski, G., Gallina, G., Garbini, M., Abia, P. Garcia, Gawdzik, A., Gendotti, A., Ghisi, A., Giovanetti, G. K., Casanueva, V. Goicoechea, Gola, A., Grandi, L., Grauso, G., di Cortona, G. Grilli, Grobov, A., Gromov, M., Guerzoni, M., Gulino, M., Guo, C., Hackett, B. R., Hallin, A., Hamer, A., Haranczyk, M., Harrop, B., Hessel, T., Hill, S., Horikawa, S., Hu, J., Hubaut, F., Hucker, J., Hugues, T., Hungerford, E. V., Ianni, A., Ippolito, V., Jamil, A., Jillings, C., Keloth, R., Kemmerich, N., Kemp, A., Kendziora, C. L., Kimura, M., Kondo, K., Korga, G., Kotsiopoulou, L., Koulosousas, S., Kubankin, A., Kuss, M., Kuzniak, M., Kuzwa, M., La Commara, M., Lai, M., Guirriec, E. Le, Leason, E., Leoni, A., Lidey, L., Lissia, M., Luzzi, L., Lychagina, O., Macfadyen, O., Machulin, I. N., Manecki, S., Manthos, I., Mapelli, L., Marasciulli, A., Mari, S. M., Mariani, C., Maricic, J., Marini, A., Martinez, M., Martoff, C. J., Matteucci, G., Mavrokoridis, K., McDonald, A. B., Mclaughlin, J., Merzi, S., Messina, A., Milincic, R., Minutoli, S., Mitra, A., Moharana, A., Moioli, S., Monroe, J., Moretti, E., Morrocchi, M., Mroz, T., Muratova, V. N., Murphy, M., Murra, M., Muscas, C., Musico, P., Nania, R., Nessi, M., Nieradka, G., Nikolopoulos, K., Nikoloudaki, E., Nowak, J., Olchanski, K., Oleinik, A., Oleynikov, V., Organtini, P., de Solórzano, A. Ortiz, Pallavicini, M., Pandola, L., Pantic, E., Paoloni, E., Papi, D., Pastuszak, G., Paternoster, G., Peddis, D., Pegoraro, P. A., Pelczar, K., Pellegrini, L. A., Perez, R., Perotti, F., Pesudo, V., Piacentini, S. I., Pino, N., Plante, G., Pocar, A., Poehlmann, M., Pordes, S., Pralavorio, P., Price, D., Puglia, S., Bazetto, M. Queiroga, Ragusa, F., Ramachers, Y., Ramirez, A., Ravinthiran, S., Razeti, M., Renshaw, A. L., Rescigno, M., Retiere, F., Rignanese, L. P., Rivetti, A., Roberts, A., Roberts, C., Rogers, G., Romero, L., Rossi, M., Rubbia, A., Rudik, D., Sabia, M., Sadashivajois, S., Salomone, P., Samoylov, O., Sandford, E., Sanfilippo, S., Santone, D., Santorelli, R., Santos, E. M., Savarese, C., Scapparone, E., Schillaci, G., Schuckman II, F. G., Scioli, G., Semenov, D. A., Sheshukov, A., Simeone, M., Skensved, P., Skorokhvatov, M. D., Slimani, S., Smirnov, O., Smirnova, T., Smith, B., Sotnikov, A., Spadoni, F., Spangenberg, M., Stefanizzi, R., Steri, A., Stornelli, V., Stracka, S., Sulis, S., Sung, A., Sunny, C., Suvorov, Y., Szelc, A. M., Taborda, O., Tartaglia, R., Taylor, A., Taylor, J., Tedesco, S., Testera, G., Thieme, K., Thompson, A., Tonazzo, A., Torres-Lara, S., Tosi, S., Tricomi, A., Unzhakov, E. V., Vallivilayil, T. J., Van Uffelen, M., Velazquez-Fernandez, L., Viant, T., Vicini, S., Viel, S., Vishneva, A., Vogelaar, R. B., Vossebeld, J., Vyas, B., Wada, M., Walczak, M. B., Wang, H., Wang, Y., Westerdale, S., Williams, L., Wojaczynski, R., Wojcik, M. M., Wojcik, M., Wright, T., Xie, Y., Yang, C., Yin, J., Zabihi, A., Zakhary, P., Zani, A., Zhang, Y., Zhu, T., Zichichi, A., Zuzel, G., and Zykova, M. P.
- Subjects
Physics - Instrumentation and Detectors ,High Energy Physics - Experiment - Abstract
Experiments aimed at direct searches for WIMP dark matter require highly effective reduction of backgrounds and control of any residual radioactive contamination. In particular, neutrons interacting with atomic nuclei represent an important class of backgrounds due to the expected similarity of a WIMP-nucleon interaction, so that such experiments often feature a dedicated neutron detector surrounding the active target volume. In the context of the development of DarkSide-20k detector at INFN Gran Sasso National Laboratory (LNGS), several R&D projects were conceived and developed for the creation of a new hybrid material rich in both hydrogen and gadolinium nuclei to be employed as an essential element of the neutron detector. Thanks to its very high cross-section for neutron capture, gadolinium is one of the most widely used elements in neutron detectors, while the hydrogen-rich material is instrumental in efficiently moderating the neutrons. In this paper results from one of the R&Ds are presented. In this effort the new hybrid material was obtained as a poly(methyl methacrylate) (PMMA) matrix, loaded with gadolinium oxide in the form of nanoparticles. We describe its realization, including all phases of design, purification, construction, characterization, and determination of mechanical properties of the new material.
- Published
- 2024
7. Mesh Optimization for the Virtual Element Method: How Small Can an Agglomerated Mesh Become?
- Author
-
Sorgente, Tommaso, Berrone, Stefano, Biasotti, Silvia, Manzini, Gianmarco, Spagnuolo, Michela, and Vicini, Fabio
- Subjects
Mathematics - Numerical Analysis - Abstract
We present an optimization procedure for generic polygonal or polyhedral meshes, tailored for the Virtual Element Method (VEM). Once the local quality of the mesh elements is analyzed through a quality indicator specific to the VEM, groups of elements are agglomerated to optimize the global mesh quality. The resulting discretization is significantly lighter: we can remove up to 80$\%$ of the mesh elements, based on a user-set parameter, thus reducing the number of faces, edges, and vertices. This results in a drastic reduction of the total number of degrees of freedom associated with a discrete problem defined over the mesh with the VEM, in particular, for high-order formulations. We show how the VEM convergence rate is preserved in the optimized meshes, and the approximation errors are comparable with those obtained with the original ones. We observe that the optimization has a regularization effect over low-quality meshes, removing the most pathological elements. This regularization effect is evident in cases where the original meshes cause the VEM to diverge, while the optimized meshes lead to convergence. We conclude by showing how the optimization of a real CAD model can be used effectively in the simulation of a time-dependent problem.
- Published
- 2024
8. Effective polygonal mesh generation and refinement for VEM
- Author
-
Berrone, Stefano and Vicini, Fabio
- Subjects
Mathematics - Numerical Analysis ,65N30, 65N50 - Abstract
In the present work we introduce a novel refinement algorithm for two-dimensional elliptic partial differential equations discretized with Virtual Element Method (VEM). The algorithm improves the numerical solution accuracy and the mesh quality through a controlled refinement strategy applied to the generic polygonal elements of the domain tessellation. The numerical results show that the outlined strategy proves to be versatile and applicable to any two-dimensional problem where polygonal meshes offer advantages. In particular, we focus on the simulation of flow in fractured media, specifically using the Discrete Fracture Network (DFN) model. A residual a-posteriori error estimator tailored for the DFN case is employed. We chose this particular application to emphasize the effectiveness of the algorithm in handling complex geometries. All the numerical tests demonstrate optimal convergence rates for all the tested VEM orders.
- Published
- 2024
9. Validation and convergent validity of the Boston cognitive assessment (BOCA) in an Italian population: a comparative study with the Montreal cognitive assessment (MoCA) in Alzheimer’s disease spectrum
- Author
-
Padovani, Alessandro, Caratozzolo, Salvatore, Galli, Alice, Crosani, Luca, Zampini, Silvio, Cosseddu, Maura, Turrone, Rosanna, Zancanaro, Andrea, Gumina, Bianca, Vicini-Chilovi, Barbara, Benussi, Alberto, Vyshedskiy, Andrey, and Pilotto, Andrea
- Published
- 2024
- Full Text
- View/download PDF
10. International expert consensus statement: surgical failure in obstructive sleep apnea
- Author
-
Iannella, Giannicola, Pace, Annalisa, Magliulo, Giuseppe, Vicini, Claudio, Lugo, Rodolfo, Vanderveken, Olivier M., de Vries, Nico, Pang, Kenny, Thuler, Eric, Jacobowitz, Ofer, Cahali, Michel Burihan, Maurer, Joachim T., Casale, Manuele, Moffa, Antonio, Salamanca, Fabrizio, Leone, Federico, Olszewska, Ewa, Reina, Carlos O’connor, Zancanella, Edilson, Hoff, Paul T., Baptista, Peter, Bahgat, Ahmed Yassin, Ravesloot, Madeline J. L., van Maanen, Peter, Goldberg, Andrew, Carrasco, Marina, Agrawal, Vikas K., Lechien, Jerome R., De Vito, Andrea, Cammaroto, Giovanni, De Virgilio, Armando, Greco, Antonio, Mancini, Patrizia, Perrone, Tiziano, Amado, Steve, Alkan, Uri, Cheong, Ryan Chin Taw, D’Ecclesia, Aurelio, Galantai, Dorina, RajuAnand, Anand, Calvo-Henriquez, Christian, Cocuzza, Salvatore, Arigliani, Michele, Saibene, Alberto Maria, Aragona, Rosario Marchese, and Maniaci, Antonino
- Published
- 2024
- Full Text
- View/download PDF
11. The Clinical Utility of a 7-Gene Biosignature on Radiation Therapy Decision Making in Patients with Ductal Carcinoma In Situ Following Breast-Conserving Surgery: An Updated Analysis of the DCISionRT® PREDICT Study
- Author
-
Shah, Chirag, Whitworth, Pat, Vicini, Frank A., Narod, Steven, Gerber, Naamit, Jhawar, Sachin R., King, Tari A., Mittendorf, Elizabeth A., Willey, Shawna C., Rabinovich, Rachel, Gold, Linsey, Brown, Eric, Patel, Anushka, Vargo, John, Barry, Parul N., Rock, David, Friedman, Neil, Bedi, Gauri, Templeton, Sandra, Brown, Sheree, Gabordi, Robert, Riley, Lee, Lee, Lucy, Baron, Paul, Majithia, Lonika, Mirabeau-Beale, Kristina L., Reid, Vincent J., Hirsch, Arica, Hwang, Catherine, Pellicane, James, Maganini, Robert, Khan, Sadia, MacDermed, Dhara M., Small, William, Mittal, Karuna, Borgen, Patrick, Cox, Charles, Shivers, Steven C., and Bremer, Troy
- Published
- 2024
- Full Text
- View/download PDF
12. Timing of Breast Cancer Related Lymphedema Development Over 3 Years: Observations from a Large, Prospective Randomized Screening Trial Comparing Bioimpedance Spectroscopy (BIS) Versus Tape Measure
- Author
-
Shah, Chirag, Boyages, John, Koelmeyer, Louise, Chen, Steven L., and Vicini, Frank
- Published
- 2024
- Full Text
- View/download PDF
13. Role of thyroid stimulating hormone in the maintenance and functioning of the human corpus luteum
- Author
-
Taggi, M., Capponi, C., Bertani, N., Saturno, G., Innocenti, F., Dovere, L., Fabozzi, S. M., Alesiani, O., Arena, V., Cimadomo, D., Mazzilli, R., Rienzi, L., Ubaldi, F. M., Canipari, R., Vicini, E., and Apa, R.
- Published
- 2024
- Full Text
- View/download PDF
14. Cardiology Encounters for Underrepresented Racial and Ethnic Groups with Human Immunodeficiency Virus and Borderline Cardiovascular Disease Risk
- Author
-
Bloomfield, Gerald S., Hill, C. Larry, Chiswell, Karen, Cooper, Linda, Gray, Shamea, Longenecker, Chris T., Louzao, Darcy, Marsolo, Keith, Meissner, Eric G., Morse, Caryn G., Muiruri, Charles, Thomas, Kevin L., Velazquez, Eric J., Vicini, Joseph, Pettit, April C., Sanders, Gretchen, and Okeke, Nwora Lance
- Published
- 2024
- Full Text
- View/download PDF
15. Barbed Pharyngoplasty simulation using a 3D-printed model: design and validation study
- Author
-
Giorgi, Lucrezia, Moffa, Antonio, Pericone, Giovanni, Galantai, Dorina, De Benedetto, Luigi, Jacobowitz, Ofer, Vicini, Claudio, Lugo, Rodolfo, Baptista, Peter M., and Casale, Manuele
- Published
- 2024
- Full Text
- View/download PDF
16. A new observable for $W$-mass determination
- Author
-
Rottoli, Luca, Torrielli, Paolo, and Vicini, Alessandro
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Experiment - Abstract
In this contribution we discuss the properties of the jacobian asymmetry, the new observable introduced in hep-ph/2301.04059 for a robust determination of the value and uncertainty of the $W$-boson mass at hadron colliders., Comment: Proceeding of RADCOR2023
- Published
- 2023
17. Tensor reduction of loop integrals
- Author
-
Anastasiou, Charalampos, Karlen, Julia, and Vicini, Matilde
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Theory - Abstract
The computational cost associated with reducing tensor integrals to scalar integrals using the Passarino-Veltman method is dominated by the diagonalisation of large systems of equations. These systems of equations are sized according to the number of independent tensor elements that can be constructed using the metric and external momenta. In this article, we present a closed-form solution of this diagonalisation problem in arbitrary tensor integrals. We employ a basis of tensors whose building blocks are the external momentum vectors and a metric tensor transverse to the space of external momenta. The scalar integral coefficients of the basis tensors are obtained by mapping the basis elements to the elements of an orthogonaldual basis. This mapping is succinctly expressed through a formula that resembles the ordering of operators in Wick's theorem. Finally, we provide examples demonstrating the application of our tensor reduction formula to Feynman diagrams in QCD $2 \to 2$ scattering processes, specifically up to three loops., Comment: Version submitted to journal for publication. Corrected error in the expression for the rank-8 dual metric in the Appendix and added a detailed description for its derivation
- Published
- 2023
18. Compatibility and combination of world W-boson mass measurements
- Author
-
Amoroso, Simone, Andari, Nansi, Barter, William, Bendavid, Josh, Boonekamp, Maarten, Farry, Stephen, Gruenewald, Martin, Hays, Chris, Hunter, Ross, Kretzschmar, Jan, Lupton, Oliver, Pili, Martina, Pernas, Miguel Ramos, Tuchming, Boris, Vesterinen, Mika, Vicini, Alessandro, Wang, Chen, and Xu, Menglin
- Subjects
High Energy Physics - Experiment - Abstract
The compatibility of W-boson mass measurements performed by the ATLAS, LHCb, CDF, and D0 experiments is studied using a coherent framework with theory uncertainty correlations. The measurements are combined using a number of recent sets of parton distribution functions (PDF), and are further combined with the average value of measurements from the Large Electron-Positron collider. The considered PDF sets generally have a low compatibility with a suite of global rapidity-sensitive Drell-Yan measurements. The most compatible set is CT18 due to its larger uncertainties. A combination of all mW measurements yields a value of mW = 80394.6 +- 11.5 MeV with the CT18 set, but has a probability of compatibility of 0.5% and is therefore disfavoured. Combinations are performed removing each measurement individually, and a 91% probability of compatibility is obtained when the CDF measurement is removed. The corresponding value of the W boson mass is 80369.2 +- 13.3 MeV, which differs by 3.6 sigma from the CDF value determined using the same PDF set., Comment: Submitted to EPJC
- Published
- 2023
19. Probing the weak mixing angle at high energy
- Author
-
Del Pio, Clara Lavinia, Amoroso, Simone, Chiesa, Mauro, Lipka, Ekaterina, Piccinini, Fulvio, Vazzoler, Federico, and Vicini, Alessandro
- Subjects
High Energy Physics - Phenomenology - Abstract
The weak mixing angle is a probe of the vector-axial coupling structure of electroweak interactions. It has been measured precisely at the $Z$-pole by experiments at the LEP and SLD colliders, but its energy dependence above $M_Z$ remains unconstrained. In this contribution we propose to exploit measurements of Neutral-Current Drell Yan at large invariant dilepton masses at the Large Hadron Collider, to determine the scale dependence of the weak mixing angle in the $\overline{MS}$ renormalisation scheme, $\sin^2 \theta_w^{\overline{MS}}(\mu)$. Such a measurement can be used to test the Standard Model predictions for the $\overline{MS}$ running at TeV scales, and to set model-independent constraints on new states with electroweak quantum numbers. To this end, we present an implementation of $\sin^2 \theta_w^{\overline{MS}}(\mu)$ in the POWHEG-BOX Monte Carlo event generator, which we use to explore the potential of future analyses with the LHC Run~3 and High-Luminosity datasets. In particular, the impact of the higher order corrections and of the uncertainties due to the knowledge of parton distribution functions are studied., Comment: Presented at DIS2023 - XXX International Workshop on Deep-Inelastic Scattering and related subjects; minor modifications to the references included
- Published
- 2023
20. APEIRON: composing smart TDAQ systems for high energy physics experiments
- Author
-
Ammendola, Roberto, Biagioni, Andrea, Chiarini, Carlotta, Ciardiello, Andrea, Cretaro, Paolo, Frezza, Ottorino, Cicero, Francesca Lo, Lonardo, Alessandro, Martinelli, Michele, Paolucci, Pier Stanislao, Rossi, Cristian, Simula, Francesco, Turisini, Matteo, and Vicini, Piero
- Subjects
Computer Science - Distributed, Parallel, and Cluster Computing ,Physics - Instrumentation and Detectors - Abstract
APEIRON is a framework encompassing the general architecture of a distributed heterogeneous processing platform and the corresponding software stack, from the low level device drivers up to the high level programming model. The framework is designed to be efficiently used for studying, prototyping and deploying smart trigger and data acquisition (TDAQ) systems for high energy physics experiments., Comment: Under review in Journal of Physics: Conference Series (ACAT 2022)
- Published
- 2023
21. ASO Visual Abstract: The Clinical Utility of a 7-Gene Biosignature on Radiation Therapy Decision Making in Patients with Ductal Carcinoma In Situ Following Breast-Conserving Surgery: An Updated Analysis of the DCISionRT® PREDICT Study
- Author
-
Shah, Chirag, Whitworth, Pat, Vicini, Frank A., Narod, Steven, Gerber, Naamit, Jhawar, Sachin R., King, Tari A., Mittendorf, Elizabeth A., Willey, Shawna C., Rabinovich, Rachel, Gold, Linsey, Brown, Eric, Patel, Anushka, Vargo, John, Barry, Parul N., Rock, David, Friedman, Neil, Bedi, Gauri, Templeton, Sandra, Brown, Sheree, Gabordi, Robert, Riley, Lee, Lee, Lucy, Baron, Paul, Majithia, Lonika, Mirabeau-Beale, Kristina L., Reid, Vincent J., Hirsch, Arica, Hwang, Catherine, Pellicane, James, Maganini, Robert, Khan, Sadia, MacDermed, Dhara M., Small, William, Mittal, Karuna, Borgen, Patrick, Cox, Charles, Shivers, Steven C., and Bremer, Troy
- Published
- 2024
- Full Text
- View/download PDF
22. Chat GPT for the management of obstructive sleep apnea: do we have a polar star?
- Author
-
Mira, Felipe Ahumada, Favier, Valentin, dos Santos Sobreira Nunes, Heloisa, de Castro, Joana Vaz, Carsuzaa, Florent, Meccariello, Giuseppe, Vicini, Claudio, De Vito, Andrea, Lechien, Jerome R., Chiesa-Estomba, Carlos, Maniaci, Antonino, Iannella, Giannicola, Rojas, Eduardo Peña, Cornejo, Jenifer Barros, and Cammaroto, Giovanni
- Published
- 2024
- Full Text
- View/download PDF
23. Reducing rates of chronic breast cancer–related lymphedema with screening and early intervention: an update of recent data
- Author
-
Whitworth, Pat, Vicini, Frank, Valente, Stephanie A., Brownson, Kirstyn, DuPree, Beth, Kohli, Manpreet, Lawson, Laura, and Shah, Chirag
- Published
- 2024
- Full Text
- View/download PDF
24. Improving high-order VEM stability on badly-shaped elements
- Author
-
Berrone, Stefano, Teora, Gioana, and Vicini, Fabio
- Subjects
Mathematics - Numerical Analysis - Abstract
For the 2D and 3D Virtual Element Methods (VEM), a new approach to improve the conditioning of local and global matrices in the presence of badly-shaped polytopes is proposed. It defines the local projectors and the local degrees of freedom with respect to a set of scaled monomials recomputed on more well-shaped polytopes. This new approach is less computationally demanding than using the orthonormal polynomial basis. The effectiveness of our procedure is tested on different numerical examples characterized by challenging geometries of increasing complexity.
- Published
- 2023
25. Probing the weak mixing angle at high energies at the LHC and HL-LHC
- Author
-
Amoroso, Simone, Chiesa, Mauro, Del Pio, Clara Lavinia, Lipka, Katerina, Piccinini, Fulvio, Vazzoler, Federico, and Vicini, Alessandro
- Subjects
High Energy Physics - Phenomenology - Abstract
Measurements of neutral current Drell-Yan production at large invariant dilepton masses can be used to test the energy scale dependence (running) of the electroweak mixing angle. In this work, we make use of a novel implementation of the full next-to-leading order electroweak radiative corrections to the Drell-Yan process using the $\overline{\mathrm{MS}}$ renormalization scheme for the electroweak mixing angle. The potential of future analyses using proton-proton collisions at $\sqrt{s}=13.6~\mathrm{TeV}$ in the Run 3 and High-Luminosity phases of the LHC is explored. In this way, the Standard Model predictions for the $\overline{\mathrm{MS}}$ running at $\mathrm{TeV}$ scales can be probed.
- Published
- 2023
- Full Text
- View/download PDF
26. Two-loop mixed QCD-EW corrections to charged current Drell-Yan
- Author
-
Tommaso Armadillo, Roberto Bonciani, Simone Devoto, Narayan Rana, and Alessandro Vicini
- Subjects
Electroweak Precision Physics ,Higher Order Electroweak Calculations ,Higher-Order Perturbative Calculations ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract We present the two-loop mixed strong-electroweak virtual corrections to the charged current Drell-Yan process. The final-state collinear singularities are regularised by the lepton mass. The evaluation of all the relevant Feynman integrals, including those with up to two different internal massive lines, has been worked out relying on semi-analytical techniques, using complex-valued masses. We can provide, at any arbitrary phase-space point, the solution as a power series in the W-boson mass, around a reference value. Starting from these expansions, we can prepare a numerical grid for any value of the W-boson mass within their radius of convergence in a negligible amount of time.
- Published
- 2024
- Full Text
- View/download PDF
27. Compatibility and combination of world W-boson mass measurements
- Author
-
LHC-TeV MW Working Group, S. Amoroso, N. Andari, W. Barter, J. Bendavid, M. Boonekamp, S. Farry, M. Grünewald, C. Hays, R. Hunter, J. Kretzschmar, O. Lupton, M. Pili, M. Ramos Pernas, B. Tuchming, M. Vesterinen, A. Vicini, C. Wang, and M. Xu
- Subjects
Astrophysics ,QB460-466 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract The compatibility of W-boson mass measurements performed by the ATLAS, LHCb, CDF, and D0 experiments is studied using a coherent framework with theory uncertainty correlations. The measurements are combined using a number of recent sets of parton distribution functions (PDF), and are further combined with the average value of measurements from the Large Electron–Positron collider. The considered PDF sets generally have a low compatibility with a suite of global rapidity-sensitive Drell–Yan measurements. The most compatible set is CT18 due to its larger uncertainties. A combination of all $$m_W$$ m W measurements yields a value of $$m_W = 80{,}394.6 \pm 11.5$$ m W = 80 , 394.6 ± 11.5 MeV with the CT18 set, but has a probability of compatibility of 0.5% and is therefore disfavoured. Combinations are performed removing each measurement individually, and a 91% probability of compatibility is obtained when the CDF measurement is removed. The corresponding value of the W boson mass is $$80{,}369.2 \pm 13.3$$ 80 , 369.2 ± 13.3 MeV, which differs by $$3.6\sigma $$ 3.6 σ from the CDF value determined using the same PDF set.
- Published
- 2024
- Full Text
- View/download PDF
28. Compatibility and combination of world W-boson mass measurements
- Author
-
Amoroso, S., Andari, N., Barter, W., Bendavid, J., Boonekamp, M., Farry, S., Grünewald, M., Hays, C., Hunter, R., Kretzschmar, J., Lupton, O., Pili, M., Ramos Pernas, M., Tuchming, B., Vesterinen, M., Vicini, A., Wang, C., and Xu, M.
- Published
- 2024
- Full Text
- View/download PDF
29. Determination of the $W$-boson mass at hadron colliders
- Author
-
Rottoli, Luca, Torrielli, Paolo, and Vicini, Alessandro
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Experiment - Abstract
We introduce an observable relevant for the determination of the $W$-boson mass $m_W$ at hadron colliders. This observable is defined as an asymmetry around the jacobian peak of the charged-lepton transverse-momentum distribution in the charged-current Drell-Yan process. We discuss the observable's theoretical prediction, presenting results at different orders in QCD, and showing its perturbative stability. Its definition as a single scalar number and its linear sensitivity to $m_W$ allow a clean extraction of the latter and a straightforward discussion of the associated theoretical systematics: a perturbative QCD uncertainty of ${\cal O}(\pm 5)$ MeV on $m_W$ can be established by means of this observable, relying solely on charged-current Drell-Yan information. Owing to its relatively inclusive nature, the observable displays desirable properties also from the experimental viewpoint, especially for the unfolding of detector effects. We show that a measurement of this observable can lead to a competitive experimental error on $m_W$ at the LHC., Comment: 6 pages, 5 figures. Final version published in EPJC
- Published
- 2023
- Full Text
- View/download PDF
30. POD-based reduced order methods for optimal control problems governed by parametric partial differential equation with varying boundary control
- Author
-
Strazzullo, Maria and Vicini, Fabio
- Subjects
Mathematics - Numerical Analysis - Abstract
In this work we propose tailored model order reduction for varying boundary optimal control problems governed by parametric partial differential equations. With varying boundary control, we mean that a specific parameter changes where the boundary control acts on the system. This peculiar formulation might benefit from model order reduction. Indeed, fast and reliable simulations of this model can be of utmost usefulness in many applied fields, such as geophysics and energy engineering. However, varying boundary control features very complicated and diversified parametric behaviour for the state and adjoint variables. The state solution, for example, changing the boundary control parameter, might feature transport phenomena. Moreover, the problem loses its affine structure. It is well known that classical model order reduction techniques fail in this setting, both in accuracy and in efficiency. Thus, we propose reduced approaches inspired by the ones used when dealing with wave-like phenomena. Indeed, we compare standard proper orthogonal decomposition with two tailored strategies: geometric recasting and local proper orthogonal decomposition. Geometric recasting solves the optimization system in a reference domain simplifying the problem at hand avoiding hyper-reduction, while local proper orthogonal decomposition builds local bases to increase the accuracy of the reduced solution in very general settings (where geometric recasting is unfeasible). We compare the various approaches on two different numerical experiments based on geometries of increasing complexity.
- Published
- 2022
- Full Text
- View/download PDF
31. HIKE, High Intensity Kaon Experiments at the CERN SPS
- Author
-
Gil, E. Cortina, Jerhot, J., Lurkin, N., Numao, T., Velghe, B., Wong, V. W. S., Bryman, D., Bician, L., Hives, Z., Husek, T., Kampf, K., Koval, M., Akmete, A. T., Aliberti, R., Büscher, V., Di Lella, L., Doble, N., Peruzzo, L., Schott, M., Wahl, H., Wanke, R., Döbrich, B., Montalto, L., Rinaldi, D., Dettori, F., Cardini, A., Lai, A., Bomben, L., Carsi, S., Prest, M., Selmi, A., Lezzani, G., Monti-Guarnieri, P., Perna, L., Dalpiaz, P., Guidi, V., Mazzolari, A., Neri, I., Petrucci, F., Soldani, M., Bandiera, L., Ramusino, A. Cotta, Gianoli, A., Romagnoni, M., Sytov, A., Lenti, M., Panichi, I., Ruggiero, G., Bizzeti, A., Bucci, F., Antonelli, A., Di Meco, E., Lanfranchi, G., Martellotti, S., Martini, M., Moulson, M., Paesani, D., Sarra, I., Spadaro, T., Tinti, G., Vallazza, E., Ambrosino, F., Giordano, R., Massarotti, P., Napolitano, M., Saracino, G., Di Donato, C., D'Ambrosio, G., D'Errico, M., Mirra, M., Neshatpour, S., Fiorenza, R., Rosa, I., De Salvador, D., Sgarbossa, F., Anzivino, G., Germani, S., Volpe, R., Cenci, P., Cutini, S., Duk, V., Lubrano, P., Pepe, M., Piccini, M., Costantini, F., Donati, S., Giorgi, M., Giudici, S., Lamanna, G., Pedreschi, E., Pinzino, J., Sozzi, M., Fantechi, R., Giusti, V., Spinella, F., Mannelli, I., Raggi, M., Biagioni, A., Cretaro, P., Frezza, O., Cicero, F. Lo, Lonardo, A., Turisini, M., Vicini, P., Ammendola, R., Bonaiuto, V., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Menichetti, E., Migliore, E., Biino, C., Marchetto, F., Baigarashev, D., Kambar, Y., Kereibay, D., Mukhamejanov, Y., Sakhiyev, S., Olvera, A. Briano, Engelfried, J., Estrada-Tristan, N., Piandani, R., Santos, M. A. Reyes, Rivera, K. A. Rodriguez, Boboc, P. C., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Blazek, T., Cerny, V., Kleimenova, A., Kucerova, Z., Santos, D. Martinez, Prouve, C., Boretto, M., Brizioli, F., Ceccucci, A., Corvino, M., Danielsson, H., Duval, F., Gamberini, E., Guida, R., Holzer, E. B., Jenninger, B., Miotto, G. Lehmann, Lichard, P., Massri, K., Minucci, E., Perrin-Terrin, M., Ryjov, V., Swallow, J., Van Dijk, M., Zamkovsky, M., Marchevski, R., Gerbershagen, A., Fry, J. R., Gonnella, F., Goudzovski, E., Henshaw, J., Kenworthy, C., Lazzeroni, C., Parkinson, C., Romano, A., Sanders, J., Shaikhiev, A., Tomczak, A., Heath, H., Britton, D., Norton, A., Protopopescu, D., Dainton, J. B., Jones, R. W. L., De Santo, A., Salvatore, F., Cooper, P., Coward, D., and Rubin, P.
- Subjects
High Energy Physics - Experiment ,Physics - Instrumentation and Detectors - Abstract
A timely and long-term programme of kaon decay measurements at a new level of precision is presented, leveraging the capabilities of the CERN Super Proton Synchrotron (SPS). The proposed programme is firmly anchored on the experience built up studying kaon decays at the SPS over the past four decades, and includes rare processes, CP violation, dark sectors, symmetry tests and other tests of the Standard Model. The experimental programme is based on a staged approach involving experiments with charged and neutral kaon beams, as well as operation in beam-dump mode. The various phases will rely on a common infrastructure and set of detectors., Comment: Letter of Intent submitted to CERN SPSC. Address all correspondence to hike-eb@cern.ch
- Published
- 2022
32. Probing the Weak Mixing Angle at high energies at the LHC
- Author
-
Vazzoler, Federico, Amoroso, Simone, Lipka, Ekaterina, Del Pio, Clara Lavinia, Chiesa, Mauro, Piccinini, Fulvio, and Vicini, Alessandro
- Subjects
High Energy Physics - Phenomenology - Abstract
The electroweak mixing angle is a fundamental parameter of the theory of electroweak interactions. Its value has been measured precisely at the $\mathrm{Z}$-pole at colliders. In this contribution, we propose to exploit measurements of Neutral-Current Drell-Yan production at the Large Hadron Collider at large invariant dilepton masses to determine the energy scale dependence (running) of the electroweak mixing angle in the $\bar{\text{MS}}$ renormalisation scheme, $\sin^2\theta_{W,\ell}^{\bar{\text{MS}}}(\mu)$. Such a measurement can be used to confirm the Standard Model predictions for the $\bar{\text{MS}}$ running at $\text{TeV}$ scales, and to set model-independent constraints on new states with electroweak quantum numbers. To this end, we make use of a dedicated implementation of $\sin^2\theta_{W,\ell}^{\bar{\text{MS}}}(\mu)$ in the POWHEG-BOX-V2 Monte Carlo event generator, which we use to explore the potential of future analyses using the data of the LHC Run 3 and High-Luminosity., Comment: To appear in the Proceedings of the 41st International Conference on High Energy physics - ICHEP2022, Bologna, Italy, 6-13 July, 2022
- Published
- 2022
33. La experiencia de Práctica Profesional en el profesorado en Ciencias de la Educación de la Universidad Nacional de Mar del Plata. Inter-venir en clave performativa como desafío para ampliar horizontes
- Author
-
Federico Ayciriet, Gustavo Vicini, Florencia Zarate, and Victoria Crego
- Subjects
práctica profesional ,ciencias de la educación ,formación docente ,intervención ,narrativa ,Education (General) ,L7-991 ,Special aspects of education ,LC8-6691 - Abstract
El presente artículo constituye un ejercicio de des-recomposición de la experiencia de cursada inaugural del espacio curricular Práctica Profesional, correspondiente al quinto año del profesorado en Ciencias de la Educación de la Facultad de Humanidades de la Universidad Nacional de Mar del Plata. Se ofrece como un relato del desarrollo de la propuesta, reponiendo condiciones contextuales, definiciones y criterios que orientaron el movimiento que significó la puesta en marcha de la materia que oficia de corolario de la carrera. En el devenir del relato, el escrito caracteriza la asignatura en el marco del plan de estudios del profesorado, explicita los fundamentos teóricos y metodológicos que sustentan la propuesta y describe los dispositivos de formación que se diseñaron, atendiendo las condiciones contextuales en las que se llevó adelante la cursada.
- Published
- 2024
- Full Text
- View/download PDF
34. Optical coherence tomography angiography findings in patients affected by giant cell arteritis, with and without ocular involvement: a pilot study
- Author
-
Lorenzo Vannozzi, Cristina Nicolosi, Giulio Vicini, Daniela Bacherini, Dario Giattini, Maria Letizia Urban, Adalgisa Palermo, Danilo Malandrino, Federica Bello, Gianni Virgili, and Fabrizio Giansanti
- Subjects
giant cell arteritis ,OCTA ,optical coherence tomography angiography ,Horton arteritis ,OCT ,Medicine (General) ,R5-920 - Abstract
PurposeWe evaluated the clinical features and retinal and disk perfusion characteristics by using optical coherence tomography (OCT) and optical coherence tomography angiography (OCTA) in a subset of giant cell arteritis (GCA) patients who manifested anterior ischemic optic neuropathy (AION), in a subset of GCA patients without ocular involvement, and in a control group composed of healthy controls.MethodsWe performed an observational study on the eyes of GCA patients affected by arteritic AION both in acute and chronic phases, unaffected eyes of AION, eyes of GCA patients without ocular involvement, and in a control group of healthy eyes of healthy individuals. All patients underwent a complete ophthalmic examination and an OCT and OCTA of the macula and the disk.ResultsThe study evaluated 10 eyes of GCA patients with AION (AION group), 8 unaffected eyes of GCA patients with AION in another eye (unaffected eyes of AION group), 16 eyes of GCA patients without ocular involvement (non-ocular group), and 22 eyes of healthy patients (healthy group). The ganglion cell complex (GCC) superior and inferior thicknesses were significantly lower in the AION group compared to the unaffected eyes of the AION group (p = 0.045 and p = 0.034, respectively). All OCTA vascular density parameters of the optic disk analyzed in this study (optic nerve head (ONH) whole, superior, inferior, radial peripapillary capillary plexus (RPCP) whole, superior, inferior, lamina cribrosa (LC) whole, superior, inferior) resulted significantly lower in the AION group compared to the unaffected eyes group (p
- Published
- 2024
- Full Text
- View/download PDF
35. Mesh Quality Agglomeration algorithm for the Virtual Element Method applied to Discrete Fracture Networks
- Author
-
Sorgente, Tommaso, Vicini, Fabio, Berrone, Stefano, Biasotti, Silvia, Manzini, Gianmarco, and Spagnuolo, Michela
- Subjects
Mathematics - Numerical Analysis - Abstract
We propose a quality-based optimization strategy to reduce the total number of degrees of freedom associated to a discrete problem defined over a polygonal tessellation with the Virtual Element Method. The presented Quality Agglomeration algorithm relies only on the geometrical properties of the problem polygonal mesh, agglomerating groups of neighboring elements. We test this approach in the context of fractured porous media, in which the generation of a global conforming mesh on a Discrete Fracture Network leads to a considerable number of unknowns, due to the presence of highly complex geometries and the significant size of the computational domains. We show the efficiency and the robustness of our approach, applied independently on each fracture for different network configurations, exploiting the flexibility of the Virtual Element Method in handling general polygonal elements.
- Published
- 2022
36. Solving Inverse PDE Problems using Grid-Free Monte Carlo Estimators
- Author
-
Yılmazer, Ekrem Fatih, Vicini, Delio, and Jakob, Wenzel
- Subjects
Computer Science - Graphics ,Mathematics - Analysis of PDEs ,68U05 - Abstract
Modeling physical phenomena like heat transport and diffusion is crucially dependent on the numerical solution of partial differential equations (PDEs). A PDE solver finds the solution given coefficients and a boundary condition, whereas an inverse PDE solver goes the opposite way and reconstructs these inputs from an existing solution. In this article, we investigate techniques for solving inverse PDE problems using a gradient-based methodology. Conventional PDE solvers based on the finite element method require a domain meshing step that can be fragile and costly. Grid-free Monte Carlo methods instead stochastically sample paths using variations of the walk on spheres algorithm to construct an unbiased estimator of the solution. The uncanny similarity of these methods to physically-based rendering algorithms has been observed by several recent works. In the area of rendering, recent progress has led to the development of efficient unbiased derivative estimators. They solve an adjoint form of the problem and exploit arithmetic invertibility to compute gradients using a constant amount of memory and linear time complexity. Could these two lines of work be combined to compute cheap parametric derivatives of a grid-free PDE solver? We investigate this question and present preliminary results., Comment: 9 pages (2 pages references and appendix), 9 figures
- Published
- 2022
37. Intra-urban variability of long-term exposure to PM2.5 and NO2 in five cities in Colombia
- Author
-
Rodriguez-Villamizar, Laura A., Rojas, Yurley, Grisales, Sara, Mangones, Sonia C., Cáceres, Jhon J., Agudelo-Castañeda, Dayana M., Herrera, Víctor, Marín, Diana, Jiménez, Juan G. Piñeros, Belalcázar-Ceron, Luis C., Rojas-Sánchez, Oscar Alberto, Ochoa Villegas, Jonathan, López, Leandro, Rojas, Oscar Mauricio, Vicini, María C., Salas, Wilson, Orrego, Ana Zuleima, Castillo, Margarita, Sáenz, Hugo, Hernández, Luis Álvaro, Weichenthal, Scott, Baumgartner, Jill, and Rojas, Néstor Y.
- Published
- 2024
- Full Text
- View/download PDF
38. Low-molecular-weight heparin for the prevention of clinical worsening in severe non-critically ill COVID-19 patients: a joint analysis of two randomized controlled trials
- Author
-
Wu, Maddalena Alessandra, Del GIovane, Cinzia, Colombo, Riccardo, Dolci, Giovanni, Arquati, Massimo, Vicini, Roberto, Russo, Umberto, Ruggiero, Diego, Coluccio, Valeria, Taino, Alba, Franceschini, Erica, Facchinetti, Pietro, Mighali, Pasquale, Trombetta, Lucia, Tonelli, Francesca, Gabiati, Claudia, Cogliati, Chiara, D’Amico, Roberto, and Marietta, Marco
- Published
- 2024
- Full Text
- View/download PDF
39. ASO Visual Abstract: Timing of Breast Cancer-Related Lymphedema Development Over 3 Years: Observations from a Large, Prospective Randomized Screening Trial Comparing Bioimpedance Spectroscopy (BIS) Versus Tape Measure
- Author
-
Shah, Chirag, Boyages, John, Koelmeyer, Louise, Chen, Steven L., and Vicini, Frank
- Published
- 2024
- Full Text
- View/download PDF
40. A narrative review for radiation oncologists to implement preoperative partial breast irradiation
- Author
-
Zerella, Maria Alessia, Zaffaroni, Mattia, Ronci, Giuseppe, Dicuonzo, Samantha, Rojas, Damaris Patricia, Morra, Anna, Gerardi, Marianna Alessandra, Fodor, Cristiana, Rondi, Elena, Vigorito, Sabrina, Penco, Silvia, Sargenti, Manuela, Baratella, Paola, Vicini, Elisa, Morigi, Consuelo, Kahler-Ribeiro-Fontana, Sabrina, Galimberti, Viviana Enrica, Gandini, Sara, De Camilli, Elisa, Renne, Giuseppe, Cattani, Federica, Veronesi, Paolo, Orecchia, Roberto, Jereczek-Fossa, Barbara Alicja, and Leonardi, Maria Cristina
- Published
- 2023
- Full Text
- View/download PDF
41. Amplitude spectral area of ventricular fibrillation and defibrillation success at low energy in out-of-hospital cardiac arrest
- Author
-
Gentile, Francesca R., Wik, Lars, Isasi, Iraia, Baldi, Enrico, Aramendi, Elisabete, Steen-Hansen, Jon Erik, Fasolino, Alessandro, Compagnoni, Sara, Contri, Enrico, Palo, Alessandra, Primi, Roberto, Bendotti, Sara, Currao, Alessia, Quilico, Federico, Vicini Scajola, Luca, Lopiano, Clara, and Savastano, Simone
- Published
- 2023
- Full Text
- View/download PDF
42. APOE4 genotype and aging impair injury-induced microglial behavior in brain slices, including toward Aβ, through P2RY12
- Author
-
Jordy Sepulveda, Jennifer Yejean Kim, Joseph Binder, Stefano Vicini, and G. William Rebeck
- Subjects
Microglia ,APOE4 ,Aging ,Alzheimer’s disease ,P2RY12 ,Ex-vivo imaging ,Neurology. Diseases of the nervous system ,RC346-429 ,Geriatrics ,RC952-954.6 - Abstract
Abstract Microglia are highly dynamic cells that play a critical role in tissue homeostasis through the surveillance of brain parenchyma and response to cues associated with damage. Aging and APOE4 genotype are the strongest risk factors for Alzheimer’s disease (AD), but how they affect microglial dynamics remains unclear. Using ex vivo confocal microscopy, we analyzed microglial dynamic behaviors in the entorhinal cortex (EC) and hippocampus CA1 of 6-, 12-, and 21-month-old mice APOE3 or APOE4 knock-in mice expressing GFP under the CX3CR1 promoter. To study microglia surveillance, we imaged microglia baseline motility for 20 min and measured the extension and retraction of processes. We found that APOE4 microglia exhibited significantly less brain surveillance (27%) compared to APOE3 microglia in 6-month-old mice; aging exacerbated this deficit. To measure microglia response to damage, we imaged process motility in response to ATP, an injury-associated signal, for 30 min. We found APOE4 microglia extended their processes significantly slower (0.9 µm/min, p
- Published
- 2024
- Full Text
- View/download PDF
43. Evaluation of Feynman integrals with arbitrary complex masses via series expansions
- Author
-
Armadillo, Tommaso, Bonciani, Roberto, Devoto, Simone, Rana, Narayan, and Vicini, Alessandro
- Subjects
High Energy Physics - Phenomenology - Abstract
We present an algorithm to evaluate multiloop Feynman integrals with an arbitrary number of internal massive lines, with the masses being in general complex-valued, and its implementation in the \textsc{Mathematica} package \textsc{SeaSyde}. The implementation solves by series expansions the system of differential equations satisfied by the Master Integrals. At variance with respect to other existing codes, the analytical continuation of the solution is performed in the complex plane associated to each kinematical invariant. We present the results of the evaluation of the Master Integrals relevant for the NNLO QCD-EW corrections to the neutral-current Drell-Yan processes., Comment: 23 pages, 6 figures, 2 tables, Version accepted for publication in CPC
- Published
- 2022
- Full Text
- View/download PDF
44. Urinary hyaluronidase activity is closely related to vasopressinergic system following an oral water load in men: a potential role in blood pressure regulation and early stages of hypertension development
- Author
-
Anna Calvi, Alice Bongrani, Ignazio Verzicco, Giuliano Figus, Vanni Vicini, Pietro Coghi, Alberto Montanari, and Aderville Cabassi
- Subjects
hyaluronidase ,arginin-vasopressin ,ADH ,hypertension ,Aquaporin 2 ,water metabolism ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
IntroductionBlood pressure (BP) regulation is a complex process involving several factors, among which water-sodium balance holds a prominent place. Arginin-vasopressin (AVP), a key player in water metabolism, has been evoked in hypertension development since the 1980s, but, to date, the matter is still controversial. Hyaluronic acid metabolism has been reported to be involved in renal water management, and AVP appears to increase hyaluronidase activity resulting in decreased high-molecular-weight hyaluronan content in the renal interstitium, facilitating water reabsorption in collecting ducts. Hence, our aim was to evaluate urinary hyaluronidase activity in response to an oral water load in hypertensive patients (HT, n=21) compared to normotensive subjects with (NT+, n=36) and without (NT-, n=29) a family history of hypertension, and to study its association with BP and AVP system activation, expressed by serum copeptin levels and urine Aquaporin 2 (AQP2)/creatinine ratio.MethodsEighty-six Caucasian men were studied. Water load test consisted in oral administration of 15–20 ml of water/kg body weight over 40–45 min. BP, heart rate, serum copeptin, urine hyaluronidase activity and AQP2 were monitored for 4 hours.ResultsIn response to water drinking, BP raised in all groups with a peak at 20–40 min. Baseline levels of serum copeptin, urinary hyaluronidase activity and AQP2/creatinine ratio were similar among groups and all decreased after water load, reaching their nadir at 120 min and then gradually recovering to baseline values. Significantly, a blunted reduction in serum copeptin, urinary hyaluronidase activity and AQP2/creatinine ratio was observed in NT+ compared to NT- subjects. A strong positive correlation was also found between urinary hyaluronidase activity and AQP2/creatinine ratio, and, although limited to the NT- group, both parameters were positively associated with systolic BP.DiscussionOur results demonstrate for the first time the existence in men of a close association between urinary hyaluronidase activity and vasopressinergic system and suggest that NT+ subjects have a reduced ability to respond to water loading possibly contributing to the blood volume expansion involved in early-stage hypertension. Considering these data, AVP could play a central role in BP regulation by affecting water metabolism through both hyaluronidase activity and AQP2 channel expression.
- Published
- 2024
- Full Text
- View/download PDF
45. Snowmass 2021 White Paper: Electron Ion Collider for High Energy Physics
- Author
-
Khalek, R. Abdul, D'Alesio, U., Arratia, M., Bacchetta, A., Battaglieri, M., Begel, M., Boglione, M., Boughezal, R., Boussarie, R., Bozzi, G., Chekanov, S. V., Celiberto, F. G., Chirilli, G., Cridge, T., Cruz-Torres, R., Corliss, R., Cotton, C., Davoudiasl, H., Deshpande, A., Dong, X., Emmert, A., Fazio, S., Forte, S., Furletova, Y., Gal, C., Gwenlan, C., Guzey, V., Harland-Lang, L. A., Helenius, I., Hentschinski, M., Hobbs, T. J., Hoeche, S., Hou, T. -J., Ji, Y., Jing, X., Kelsey, M., Klasen, M., Kang, Z. -B., Kovchegov, Y. V., Kumar, K. S., Lappi, T., Lee, K., Lee, Y. -J., Li, H. -T., Li, X., Lin, H. -W., Liu, H., Liu, Z. L., Liuti, S., Lorce, C., Lunghi, E., Marcarelli, R., Magill, S., Makris, Y., Mantry, S., Melnitchouk, W., Mezrag, C., Moch, S., Moutarde, H., Mukherjee, Swagato, Murgia, F., Nachman, B., Nadolsky, P. M., Nam, J. D., Neill, D., Neill, E. T., Nocera, E., Nycz, M., Olness, F., Petriello, F., Pitonyak, D., Platzer, S., Prestel, S., Prokudin, A., Qiu, J., Radici, M., Radhakrishnan, S., Sadofyev, A., Rojo, J., Ringer, F., Salazar, F., Sato, N., Schenke, B., Schlichting, S., Schweitzer, P., Sekula, S. J., Shao, D. Y., Sherrill, N., Sichtermann, E., Signori, A., Simsek, K., Simonelli, A., Sznajder, P., Tezgin, K., Thorne, R. S., Tricoli, A., Venugopalan, R., Vladimirov, A., Vicini, A., Vitev, I., Wiegand, D., Wong, C. -P., Xie, K., Zaccheddu, M., Zhao, Y., Zhang, J., Zheng, X., and Zurita, P.
- Subjects
High Energy Physics - Phenomenology ,High Energy Physics - Experiment ,Nuclear Experiment ,Nuclear Theory - Abstract
Electron Ion Collider (EIC) is a particle accelerator facility planned for construction at Brookhaven National Laboratory on Long Island, New York by the United States Department of Energy. EIC will provide capabilities of colliding beams of polarized electrons with polarized beams of proton and light ions. EIC will be one of the largest and most sophisticated new accelerator facilities worldwide, and the only new large-scale accelerator facility planned for construction in the United States in the next few decades. The versatility, resolving power and intensity of EIC will present many new opportunities to address some of the crucial and fundamental open scientific questions in particle physics. This document provides an overview of the science case of EIC from the perspective of the high energy physics community., Comment: Submitted to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021)
- Published
- 2022
46. Initial state QED radiation aspects for future $e^+e^-$ colliders
- Author
-
Frixione, S., Laenen, E., Calame, C. M. Carloni, Denner, A., Dittmaier, S., Engel, T., Flower, L., Gellersen, L., Hoeche, S., Jadach, S., Masouminia, M. R., Montagna, G., Nicrosini, O., Piccinini, F., Plätzer, S., Price, A., Reuter, J., Rocco, M., Schönherr, M., Signer, A., Sjöstrand, T., Stagnitto, G., Ulrich, Y., Verheyen, R., Vernazza, L., Vicini, A., Ward, B. F. L., and Zaro, M.
- Subjects
High Energy Physics - Phenomenology - Abstract
This white paper concerns theoretical and phenomenological aspects relevant to the physics of future $e^+e^-$ colliders, in particular regarding initial-state QED radiation. The contributions each contain key technical aspects, and are formulated in a pedagogical manner so as to render them accessible also to those who are not directly working on these and immediately-related topics. This should help both experts and non-experts understand the theoretical challenges that we shall face at future $e^+e^-$ colliders. Specifically, this paper contains descriptions of the treatment of initial state radiation from several Monte Carlo collaborations, as well as contributions that explain a number of more theoretical developments with promise of future phenomenological impact., Comment: Contribution to: 2022 Snowmass Summer Study
- Published
- 2022
47. Extended Finite Elements for 3D-1D coupled problems via a PDE-constrained optimization approach
- Author
-
Grappein, Denise, Scialó, Stefano, and Vicini, Fabio
- Subjects
Mathematics - Numerical Analysis ,65N30, 65N50, 68U20 - Abstract
In this work, we propose the application of the eXtended Finite Element Method (XFEM) in the context of the coupling between three-dimensional and one-dimensional elliptic problems. In particular, we consider the case in which the 3D-1D coupled problem arises from the geometrical model reduction of a fully three-dimensional problem, characterized by thin tubular inclusions embedded in a much wider domain. In the 3D-1D coupling framework, the use of non conforming meshes is widely adopted. However, since the inclusions typically behave as singular sinks or sources for the 3D problem, mesh adaptation near the embedded 1D domains may be necessary to enhance solution accuracy and recover optimal convergence rates. An alternative to mesh adaptation is represented by the XFEM, which we here propose to enhance the approximation capabilities of an optimization-based 3D-1D coupling approach. An effective quadrature strategy is devised to integrate the enrichment functions and numerical tests on single and multiple segments are proposed to demonstrate the effectiveness of the approach.
- Published
- 2022
48. Progress report on the online processing upgrade at the NA62 experiment
- Author
-
Turisini, M., Ammendola, R., Biagioni, A., Ciardiello, A., Cretaro, P., Frezza, O., Lamanna, G., Cicero, F. Lo, Lonardo, A., Martinelli, M., Piandani, R., Soldi, D., and Vicini, P.
- Subjects
Physics - Instrumentation and Detectors ,High Energy Physics - Experiment - Abstract
A new FPGA-based low-level trigger processor has been installed at the NA62 experiment. It is intended to extend the features of its predecessor due to a faster interconnection technology and additional logic resources available on the new platform. With the aim of improving trigger selectivity and exploring new architectures for complex trigger computation, a GPU system has been developed and a neural network on FPGA is in progress. They both process data streams from the Ring Imaging Cherenkov detector of the experiment to extract in real time high level features for the trigger logic. Description of the systems, latest developments and design flows are reported in this paper., Comment: 5 pages, 3 figures, 1 table. Submitted to JINST as part of the TWEPP2021 conference proceeding (Topical Workshop on Electronics for Particle Physics, 20 - 24 September, 2021, online)
- Published
- 2022
49. Dr.Jit: A Just-In-Time Compiler for Differentiable Rendering
- Author
-
Jakob, Wenzel, Speierer, Sébastien, Roussel, Nicolas, and Vicini, Delio
- Subjects
Computer Science - Graphics - Abstract
Dr.Jit is a new just-in-time compiler for physically based rendering and its derivative. Dr.Jit expedites research on these topics in two ways: first, it traces high-level simulation code (e.g., written in Python) and aggressively simplifies and specializes the resulting program representation, producing data-parallel kernels with state-of-the-art performance on CPUs and GPUs. Second, it simplifies the development of differentiable rendering algorithms. Efficient methods in this area turn the derivative of a simulation into a simulation of the derivative. Dr.Jit provides fine-grained control over the process of automatic differentiation to help with this transformation. Specialization is particularly helpful in the context of differentiation, since large parts of the simulation ultimately do not influence the computed gradients. Dr.Jit tracks data dependencies globally to find and remove redundant computation., Comment: To appear at SIGGRAPH 2022
- Published
- 2022
- Full Text
- View/download PDF
50. Physical activity practiced at a young age is associated with a less severe subsequent clinical presentation in facioscapulohumeral muscular dystrophy
- Author
-
Cinzia Bettio, Federico Banchelli, Valentina Salsi, Roberto Vicini, Oscar Crisafulli, Lucia Ruggiero, Giulia Ricci, Elisabetta Bucci, Corrado Angelini, Angela Berardinelli, Silvia Bonanno, Maria Grazia D’Angelo, Antonio Di Muzio, Massimiliano Filosto, Erica Frezza, Lorenzo Maggi, Tiziana Mongini, Elena Pegoraro, Carmelo Rodolico, Marina Scarlato, Gaetano Vattemi, Daniele Velardo, Giuliano Tomelleri, Roberto D’Amico, Giuseppe D’Antona, and Rossella Tupler
- Subjects
FSHD ,Neuromuscular diseases ,Sport medicine ,Physical activity ,Rare disease ,Health promotion ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Background In facioscapulohumeral muscular dystrophy (FSHD), it is not known whether physical activity (PA) practiced at young age is associated with the clinical presentation of disease. To assess this issue, we performed a retrospective cohort study concerning the previous practice of sports and, among them, those with medium-high cardiovascular commitment in clinically categorized carriers of a D4Z4 reduced allele (DRA). Methods People aged between 18 and 60 were recruited as being DRA carriers. Subcategory (classical phenotype, A; incomplete phenotype, B; asymptomatic carriers, C; complex phenotype, D) and FSHD score, which measures muscle functional impairment, were assessed for all participants. Information on PAs was retrieved by using an online survey dealing with the practice of sports at a young age. Results 368 participants were included in the study, average age 36.6 years (SD = 9.4), 47.6% male. The FSHD subcategory A was observed in 157 (42.7%) participants with average (± SD) FSHD score of 5.8 ± 3.0; the incomplete phenotype (category B) in 46 (12.5%) participants (average score 2.2 ± 1.7) and the D phenotype in 61 (16.6%, average score 6.5 ± 3.8). Asymptomatic carriers were 104 (subcategory C, 28.3%, score 0.0 ± 0.2). Time from symptoms onset was higher for patients with A (15.8 ± 11.1 years) and D phenotype (13.3 ± 11.9) than for patients with B phenotype (7.3 ± 9.0). The practice of sports was associated with lower FSHD score (-17%) in participants with A phenotype (MR = 0.83, 95% CI = 0.73–0.95, p = 0.007) and by 33% in participants with D phenotype (MR = 0.67, 95% CI = 0.51–0.89, p = 0.006). Conversely, no improvement was observed in participants with incomplete phenotype with mild severity (B). Conclusions PAs at a young age are associated with a lower clinical score in the adult A and D FSHD subcategories. These results corroborate the need to consider PAs at the young age as a fundamental indicator for the correct clinical stratification of the disease and its possible evolution.
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.