The European Physical Journal A最新文献_第2页

Experimental study of tensor structure function of deuteron 氘核张量结构函数的实验研究

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-18 DOI: 10.1140/epja/s10050-025-01558-w

Jiwan Poudel, Alessandro Bacchetta, Jian-Ping Chen, Nathaly Santiesteban

{"title":"Experimental study of tensor structure function of deuteron","authors":"Jiwan Poudel, Alessandro Bacchetta, Jian-Ping Chen, Nathaly Santiesteban","doi":"10.1140/epja/s10050-025-01558-w","DOIUrl":"10.1140/epja/s10050-025-01558-w","url":null,"abstract":"<div><p>The deuteron is the lightest spin-1 nucleus, consisting of a weakly bound system of two spin-<span>(frac{1}{2})</span> nucleons. One intriguing characteristic of the deuteron is the tensor polarized structure, which cannot be naively constructed combining the proton and neutron structure. The tensor structure of the deuteron provides unique insights into the quarks and gluons distributions and their dynamics within the nucleus. It can be studied experimentally through inclusive and semi-inclusive Deep Inelastic Scattering (DIS) of electrons on tensor polarized deuterons. One-dimensional (longitudinal-momentum-dependent) tensor structure functions are extracted from the inclusive DIS, whereas three-dimensional with additional transverse-momentum-dependent tensor structure functions are extracted from the semi-inclusive DIS. Experimentally, achieving high tensor polarization for such measurements has been a challenge. Significant progress has recently been made in enhancing the tensor polarization for polarized deuteron target, opening up a new window for experimental studies of the deuteron tensor structure. In this article, we discuss the tensor structure functions of the deuteron and the experimental schemes to extract these functions at Jefferson Lab, highlighting the potential measurements of the transverse-momentum-dependent tensor structure functions.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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The use of artificial neural networks for the unfolding procedures in neutron activation measurements 人工神经网络在中子活化测量展开过程中的应用

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-17 DOI: 10.1140/epja/s10050-025-01555-z

S. Ilić, N. Jovančević, D. Knežević, D. Maletić, C. Stieghorst, A. Nayak, S. Oberstedt, M. Hult, D. Boschmann, L. Kadri, Ö. Ozden, I. Arsenić, M. Krmar

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R-matrix type parametrization of the Jost function for extracting the resonance parameters from scattering data 从散射数据中提取共振参数的Jost函数的r矩阵型参数化

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-15 DOI: 10.1140/epja/s10050-025-01549-x

P. Vaandrager, M. L. Lekala, S. A. Rakityansky

{"title":"R-matrix type parametrization of the Jost function for extracting the resonance parameters from scattering data","authors":"P. Vaandrager, M. L. Lekala, S. A. Rakityansky","doi":"10.1140/epja/s10050-025-01549-x","DOIUrl":"10.1140/epja/s10050-025-01549-x","url":null,"abstract":"<div><p>A new method is proposed for fitting non-relativistic binary-scattering data and for extracting the parameters of possible quantum resonances in the compound system that is formed during the collision. The method combines the well-known <i>R</i>-matrix approach with the analysis based on the semi-analytic representation of the Jost functions. It is shown that such a combination has the advantages of both these approaches, namely, the number of the fitting parameters remains relatively small (as for the <i>R</i>-matrix approach) and the proper analytic structure of the <i>S</i>-matrix is preserved (as for the Jost function method). It is also shown that the new formalism, although closely related to the <i>R</i>-matrix method, has the benefit of no dependence on an arbitrary channel radius. The efficiency and accuracy of the proposed method are tested using a model single-channel potential. Artificial “experimental” data generated with this potential are fitted, and its known resonances are successfully recovered as zeros of the Jost function on the appropriate sheet of the Riemann surface of the energy.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-025-01549-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Refining Big Bang Nucleosynthesis abundances via the Trojan Horse method 通过特洛伊木马方法提炼大爆炸核合成丰度

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-10 DOI: 10.1140/epja/s10050-025-01546-0

Roberta Spartà, Rosario Gianluca Pizzone, Livio Lamia, Alessandro Alberto Oliva, Marco La Cognata, Alessia Di Pietro, Pierpaolo Figuera, Giovanni Luca Guardo, Marco La Commara, Dario Lattuada, Marco Mazzocco, Sara Palmerini, Giuseppe Gabriele Rapisarda, Stefano Romano, Maria Letizia Sergi, Aurora Tumino

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Publisher Erratum: Plasma-delay studies on heavy ion detection using PIPS at the LOHENGRIN recoil separator 在LOHENGRIN反冲分离器上使用PIPS进行重离子检测的等离子体延迟研究

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-10 DOI: 10.1140/epja/s10050-025-01547-z

Ana M. Gómez L., Ali Al-Adili, Diego Tarrío, Andreas Solders, Zhihao Gao, Alf Göök, Stephan Pomp, André Poussette, Samuel Bennett, Yung Hee Kim, Ulli Köster, Andreas Oberstedt, Gavin Smith, Nikolay V. Sosnin, Stephan Oberstedt

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(gamma )-ray angular correlations, distributions and linear polarization in tracking arrays 跟踪阵列中的（伽马）射线角相关性、分布和线性偏振

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-10 DOI: 10.1140/epja/s10050-025-01533-5

T. Lauritsen, A. Korichi, C. M. Campbell, M. P. Carpenter, P. A. Copp, J. P. Greene, R. V. F. Janssens, T. L. Khoo, F. G. Kondev, C. Müller-Gatermann, S. Nandi, W. Reviol, G. Savard, M. Siciliano, D. Seweryniak, S. Zhu

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Quantum computing using photons 利用光子进行量子计算

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-09 DOI: 10.1140/epja/s10050-025-01517-5

Christophe Couteau

{"title":"Quantum computing using photons","authors":"Christophe Couteau","doi":"10.1140/epja/s10050-025-01517-5","DOIUrl":"10.1140/epja/s10050-025-01517-5","url":null,"abstract":"<div><p>Photons as quantum bits have been amongst the first physical systems to be used for experimentally demonstrating some of the basic concepts in quantum computing starting from entanglement, to teleportation, to the realisation of a two-qubit CNOT gate and more recently for demonstrating quantum advantage using light. Photons can thus be used as qubits and are a potential platform for a future quantum computer. It is hard to predict which platform will win the race, perhaps none of them will surpass the others. What is for sure is that light can not be ignored altogether as this is the building block for communications and for propagating information in general, and thus for quantum information, in particular over long distances through optical fibres or via satellites. We will first develop what are the different ways of encoding qubits with photons and why photons are interesting systems with a great potential. We will then review some of the pioneering works up to what has been achieved more recently and we will conclude by what perspectives one can hope for using photonic qubits. Implicitly, in this work, we take the stand-point of a future fault-tolerant quantum computer using photons. In this review, some of the experimental technologies will be mentioned and briefly described but the reader will refer to further readings for more information onto how to produce, control and detect photonic qubits. It is also worth stating that this review has to be seen more as a first introduction to the subject.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143809189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Nuclear structure and reaction studies with digital INGA 用数字INGA进行核结构和反应研究

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-07 DOI: 10.1140/epja/s10050-025-01520-w

Rudrajyoti Palit, Piku Dey, Ananya Kundu

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On the influence of nuclear deformation in the elastic scattering of polarized electrons 论极化电子弹性散射中核变形的影响

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-07 DOI: 10.1140/epja/s10050-025-01493-w

D. H. Jakubassa-Amundsen

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Scintillating glass for precision calorimetry in nuclear physics 核物理学精密量热用闪烁玻璃

IF 2.6 3区物理与天体物理

The European Physical Journal A Pub Date : 2025-04-05 DOI: 10.1140/epja/s10050-025-01540-6

Tanja Horn, Vladimir Berdnikov, Marco Battaglieri, Mariangela Bondi, Ivan Cali, Joshua Crafts, Alexandre Demarque, Yeran Ghandilyan, Stefano Grazzi, Arthur Mkrtchyan, Hamlet Mkrtchyan, Casey Morean, Mehran Mostafavi, Carlos Muñoz Camacho, Noémie Pilleux, Avnish Singh, Alexander Somov, Marco Spreafico, Petr Stepanov, Vardan Tadevosyan, Simone Vallarino, Yuwei Zhu

{"title":"Scintillating glass for precision calorimetry in nuclear physics","authors":"Tanja Horn, Vladimir Berdnikov, Marco Battaglieri, Mariangela Bondi, Ivan Cali, Joshua Crafts, Alexandre Demarque, Yeran Ghandilyan, Stefano Grazzi, Arthur Mkrtchyan, Hamlet Mkrtchyan, Casey Morean, Mehran Mostafavi, Carlos Muñoz Camacho, Noémie Pilleux, Avnish Singh, Alexander Somov, Marco Spreafico, Petr Stepanov, Vardan Tadevosyan, Simone Vallarino, Yuwei Zhu","doi":"10.1140/epja/s10050-025-01540-6","DOIUrl":"10.1140/epja/s10050-025-01540-6","url":null,"abstract":"<div><p>High-performance scintillator materials are needed for particle identification and measurements of energy and momentum of electromagnetic particles in modern nuclear physics experiments. As an example, the US Electron-Ion Collider, a unique collider with diverse physics topics, requires electromagnetic calorimetry enabling high-quality electron identification and detection in the momentum range of 0.3 to tens of GeV. The highest resolution in electromagnetic calorimeters can be provided by homogeneous materials, e.g., lead tungstate crystals. Inorganic glass scintillators have been investigated as an attractive and cost-effective alternative to crystals, that is also easier and faster to manufacture in mass production. In this paper, we discuss progress in the fabrication and characterization of recent scintillating glass samples on both test bench and beam tests. The results are well-reproduced by simulation and are discussed in the context of the Electron-Ion Collider experimental requirements and bench-marked against lead tungstate crystals.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0