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2024-12-22
06:07
New measurements of transverse spin asymmetries at COMPASS / Martin, Anna (Trieste U.) /COMPASS Collaboration
The recent developments in the description of the 3D structure of the nucleon have highlighted the relevance of SIDIS measurements with transversely polarized nucleons. The phenomenological analyses have also highlighted how the scarcity of SIDIS data collected with neutron or deuterium targets limits the knowledge of the parton distribution functions, in particular for the d quark.In the year 2022, the COMPASS experiment at CERN took data using a transversely polarised deuteron target and a 160 GeV muon beam at CERN, to balance the existing proton target data.Detailed studies had shown how those data would lead to significant progress in the knowledge of the transversity distributions.First preliminary results for the Collins and Sivers asymmetries from part of the 2022 data have already been produced, they are in line with expectations and are shown here for the first time..
2024 - 8 p. - Published in : PoS SPIN2023 (2024) 065 Fulltext: PDF;
In : 24th International Spin Symposium, Durham, USA, 24 - 29 Sep 2023, pp.065

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2024-12-22
06:07
Vector meson polarization measurements in pp and Pb--Pb collisions with ALICE at the LHC / Bai, Xiaozhi (USTC, Hefei) /ALICE Collaboration
Polarization measurements are important for understanding the vector mesons production mechanisms in proton proton pp and heavy-ion collisions. Quarkonium measurements in pp collision are crucial to constrain both perturbative and non-perturbative aspects of QCD calculations. [...]
2024 - 7 p. - Published in : PoS SPIN2023 (2024) 240 Fulltext: PDF;
In : 24th International Spin Symposium, Durham, USA, 24 - 29 Sep 2023, pp.240

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2024-12-22
06:07
Target Offline Polarization COMPASS 2022 / Reicherz, Gerhard (Ruhr U., Bochum) ; Doshita, Norihito (Yamagata U.) ; Takanashi, Yuya (Yamagata U.) ; Takahiro, Iwata (Yamagata U.) /COMPASS Polarized Target Group Collaboration
The COMPASS experiment at CERN used a transversely solid polarized deuteron target with a muon beam to measure the TMD PDFs in SIDIS in 2022.The target system consists of a 50 mK dilution refrigerator, a 2.5 T solenoid magnet, and three sets of 70 GHz microwave systems. Solid $^6$LiD beads of the target material were contained in a3-target-cell of 30-60-30 cm long with 3 cm in diameter. [...]
2024 - 6 p. - Published in : PoS SPIN2023 (2024) 202 Fulltext: PDF;
In : 24th International Spin Symposium, Durham, USA, 24 - 29 Sep 2023, pp.202

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2024-12-18
06:05
Bulk viscosity transport coefficients in neutron star mergers / Yang, Yumu (Illinois U., Urbana) ; Hippert, Mauricio (Illinois U., Urbana) ; Speranza, Enrico (CERN) ; Noronha, Jorge (Illinois U., Urbana)
We compute first and second-order bulk-viscous transport properties due to weak-interaction processes in $npe$ matter in the neutrino transparent regime. The transport coefficients characterize the out-of-beta-equilibrium pressure corrections, which depend on the weak-interaction rates and the equation of state. [...]
arXiv:2312.09364.- 2024 - 4 p. - Published in : EPJ Web Conf.: 296 (2024) , pp. 03003
Fulltext: 2312.09364 - PDF; document - PDF;
In : 30th Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2023), Houston, Texas, United States of America, 3 - 9 Sep 2023, pp.03003

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2024-12-18
06:05
Recent Developments from Feynman Integrals / Marzucca, Robin (Zurich U.) ; McLeod, Andrew J (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Page, Ben (CERN ; Gent U.) ; Pögel, Sebastian (U. Mainz, PRISMA) ; Wang, Xing (Munich, Tech. U.) ; Weinzierl, Stefan (U. Mainz, PRISMA)
This talk reviews recent developments in the field of analytical Feynman integral calculations. The central theme is the geometry associated to a given Feynman integral. [...]
arXiv:2401.06360.- 2024 - 11 p. - Published in : Acta Phys. Pol. B Proc. Suppl. 17 (2024) 2-A11 Fulltext: 2401.06360 - PDF; document - PDF;
In : 45th International Conference of Theoretical Physics: Matter To The Deepest Recent Developments In Physics Of Fundamental Interactions (MTTD 2023), Ustroń, Poland, 17 - 22 Sep 2023

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2024-12-18
06:05
Version control and DevOps for accelerator and experiments: Experience and outlook / Trobo, Ismael P (CERN) ; Evangelou, Konstantinos (CERN) ; Lossent, Alexandre (CERN) ; Wagner, Andreas (CERN)
GitLab has been in operation at CERN since 2012. It is a selfservice code hosting application based on Git that provides collaboration and code review features, becoming one of the key infrastructures at CERN. [...]
2024 - 10 p. - Published in : EPJ Web Conf. 295 (2024) 05024 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.05024

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2024-12-18
06:05
Boosting RDataFrame performance with transparent bulk event processing / Guiraud, Enrico (CERN) ; Blomer, Jakob (CERN) ; Canal, Philippe (Fermilab) ; Naumann, Axel (CERN)
RDataFrame is ROOT’s high-level interface for Python and C++ data analysis. Since it first became available, RDataFrame adoption has grown steadily and it is now poised to be a major component of analysis software pipelines for LHC Run 3 and beyond. [...]
FERMILAB-CONF-24-0684-CSAID.- 2024 - 8 p. - Published in : EPJ Web Conf. 295 (2024) 06006 Fulltext: 3afc9b57f03c0d303680c14cbbcb8c23 - PDF; document - PDF; External link: Fermilab Library Server
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.06006

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2024-12-18
06:05
Glance Search Library / Silva, Gabriel José Souza e (Rio de Janeiro Federal U.) ; Filho, Carlos Henrique Ferreira Brito (Rio de Janeiro Federal U.) ; Corti, Gloria (CERN) ; Closier, Joel (CERN)
The LHCb experiment is one of the 4 large LHC experiments at CERN. With more than 1500 members and tens of thousands of assets, the Collaboration requires systems that allow the extraction of data from many databases according to some very specific criteria. [...]
2024 - 8 p. - Published in : EPJ Web Conf. 295 (2024) 05006 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.05006

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2024-12-18
06:05
NOTED: An intelligent network controller to improve the throughput of large data transfers in File Transfer Services by handling dynamic circuits / Moreira, Carmen Misa (CERN) ; Martelli, Edoardo (CERN) ; Cass, Tony (CERN)
The NOTED (Network Optimised Transfer of Experimental Data) project has successfully demonstrated the ability to dynamically provision network links to increase the effective bandwidth available for FTS-driven transfers between endpoints, such as WLCG sites, by inspecting on-going data transfers and so identifying those that are bandwidth-limited for a long period of time. Recently, the architecture of NOTED has been improved and the software has been packaged for easy distribution.These improved capabilities and features of NOTED have been tested and demonstrated at various international conferences. [...]
2024 - 8 p. - Published in : EPJ Web Conf. 295 (2024) 07034 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.07034

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2024-12-18
06:05
Is Julia ready to be adopted by HEP? / Gál, Tamás (Erlangen - Nuremberg U.) ; Gras, Philippe (IRFU, Saclay) ; Hegner, Benedikt (CERN) ; Hernandez Acosta, Uwe (HZDR, Dresden ; CASUS) ; Kluth, Stefan (Munich, Max Planck Inst.) ; Ling, Jerry (Harvard U.) ; Mato, Pere (CERN) ; Moreno, Alexander (Antonio Narino U.) ; Pivarski, Jim (Princeton U.) ; Schulz, Oliver (Munich, Max Planck Inst.) et al.
The Julia programming language was created 10 years ago and is now a mature and stable language with a large ecosystem including more than 8,000 third-party packages. It was designed for scientific programming to be a high-level and dynamic language as Python is, while achieving runtime performances comparable to C/C++ or even faster. [...]
2024 - 6 p. - Published in : EPJ Web Conf. 295 (2024) 05008 Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.05008

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