The European Physical Journal A最新文献

{"title":"Effective theories for nuclei at high energies","authors":"Oscar Garcia-Montero,&nbsp;Sören Schlichting","doi":"10.1140/epja/s10050-025-01523-7","DOIUrl":"10.1140/epja/s10050-025-01523-7","url":null,"abstract":"<div><p>We discuss the application of the Color Glass Condensate (CGC), an effective field theory of Quantum Chromodynamics (QCD), to describe high-energy nuclear interactions. We first provide an introduction to the methods and language of the CGC, its role in understanding gluon saturation in heavy-ion collisions at the LHC and RHIC, and its relevance in various scattering processes such as Deep Inelastic Scattering (DIS). The application of the CGC effective field theory to describe hadron-hadron collisions is discussed in the scope of asymmetric <i>dilute-dense</i> collisions, and Heavy-Ion Collisions in the <i>dense-dense</i> limit. The review covers theoretical foundations, recent advancements, and phenomenological applications, focusing on using the CGC to determine the initial conditions of heavy-ion collisions.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-025-01523-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638627","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}

{"title":"Study of the deuterons emission time in pp collisions at the LHC via kaon-deuteron correlations","authors":"O. Vázquez Doce,&nbsp;D. L. Mihaylov,&nbsp;L. Fabbietti","doi":"10.1140/epja/s10050-025-01534-4","DOIUrl":"10.1140/epja/s10050-025-01534-4","url":null,"abstract":"<div><p>The femtoscopy correlation between positively charged kaons and deuterons measured in pp collisions at <span>(sqrt{s}=)</span> 13 TeV at the LHC with the ALICE experiment is employed to determine the upper limit for the time delay of the deuteron emission in such collisions with respect to all other hadrons. Two scenarios are considered: the first assumes that deuterons form following the decays of short-lived strong resonances, while the second assumes that deuteron production occurs simultaneously with all other primary hadrons. For both scenarios, an additional delay time for deuteron formation can be introduced using the CECA source model and its upper limit can be extracted by fitting the femtoscopy correlation, incorporating models of the final state K<span>(^+)</span> d strong interaction. For the scenario where deuterons production is affected by baryonic resonances the upper limit of the time delay is 2.25 fm/<i>c</i>, while for the primary production scenario the upper limit is 4.75 fm/<i>c</i>. These results align with the hypothesis of an early formation of the deuteron as an extended, weakly bound composite object in ultra-relativistic proton-proton collisions at the LHC.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632561","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}

{"title":"Nuclear reaction modeling of neutron induced reactions on (^{208})Pb","authors":"Wenqing Du,&nbsp;Xiuniao Zhao","doi":"10.1140/epja/s10050-025-01532-6","DOIUrl":"10.1140/epja/s10050-025-01532-6","url":null,"abstract":"<div><p>Theoretical calculation of neutron induced reactions on <span>(^{208})</span>Pb is undertaken. Neutron reaction modeling for this double-magic target nucleus is challenging. A dispersive optical model combined with the distorted wave Born approximation (DWBA) method, exciton model and Hauser-Feshbach theory width fluctuation corrections are used to calculate neutron induced reactions on <span>(^{208})</span>Pb. Calculation results are shown to be in good agreement with experimental data. This comprehensive calculation allows to derive consistent elastic cross section up to 10 MeV, where both the direct and compound contributions are important. Present calculations will be used as a basis of new evaluation of neutron induced reactions of lead nuclei.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632506","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}

{"title":"Plasma-delay studies on heavy ion detection using PIPS at the LOHENGRIN recoil separator","authors":"Ana M. Gómez L.,&nbsp;Ali Al-Adili,&nbsp;Diego Tarrío,&nbsp;Andreas Solders,&nbsp;Zhihao Gao,&nbsp;Alf Göök,&nbsp;Stephan Pomp,&nbsp;André Poussette,&nbsp;Samuel Bennett,&nbsp;Yung Hee Kim,&nbsp;Ulli Köster,&nbsp;Andreas Oberstedt,&nbsp;Gavin Smith,&nbsp;Nikolay V. Sosnin,&nbsp;Stephan Oberstedt","doi":"10.1140/epja/s10050-025-01509-5","DOIUrl":"10.1140/epja/s10050-025-01509-5","url":null,"abstract":"<div><p>The VERDI fission spectrometer is designed to measure fragment velocities and kinetic energies to achieve high-precision yield measurements. It consists of two time-of-flight (TOF) sections, each hosting a micro-channel plate (MCP) and up to 32 passivated implanted planar silicon (PIPS) detectors. The main challenge to achieve accurate fragment velocities is the so-called plasma delay time (PDT) phenomena in the PIPS detectors. In this work, we present a dedicated experimental campaign at the LOHENGRIN fission-fragment recoil separator, to solve the pending PDT challenges. The PDT effect was systematically investigated, as a function of mass and energy, using a dedicated time-of-flight setup. In addition, the pulse height defect (PHD) was determined simultaneously. The studies were conducted for five PIPS detectors, in energies and mass numbers ranging from 20 to 110 MeV and A = 85 to 149, respectively. Using digital signal processing, an excellent timing resolution was achieved, reaching as low as 60 ps (one <span>(sigma )</span>) for the heavy ions. The PDT revealed a strong positive correlation with the ion energy and a weak negative correlation with the mass. The experimental PDT values determined from five detectors confirm a consistent systematic behavior with respect to mass and energy. Some systematic discrepancies were exhibited by two detectors, possibly due to the use of different pre-amplification chains. The PDT measurements ranged between 1 and 3.5 ns, for heavy ions relative to <span>(alpha )</span>-particles. The PHD values showed also a strong correlation with the ion energy, and moreover with the ion mass. The PHD for heavy ions was found to range between 2 and 8 MeV, relative to <span>(alpha )</span>-particles. Finally, a two-dimensional parameterisation was developed to model the experimental PDT data, as a function of mass and energy. This new model, which is valid in the fission fragment mass and energy regime, will be of benefit for heavy-ion velocity measurements, using silicon detectors, as done in VERDI.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-025-01509-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622117","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}

{"title":"Amplitude determination for (M M rightarrow M M), (M = pi , K) and cross-sections for (gamma gamma rightarrow pi ^+ pi ^-, pi ^0 pi ^0, pi ^0 eta ) in a chiral model","authors":"S. P. Klevansky,&nbsp;R. H. Lemmer,&nbsp;Alireza Beygi","doi":"10.1140/epja/s10050-025-01524-6","DOIUrl":"10.1140/epja/s10050-025-01524-6","url":null,"abstract":"<div><p>Dai and Pennington have performed a comprehensive analysis of essentially all pion and kaon pair production data from two-photon collisions below 1.5 GeV, including all high statistics results from Belle, as well as the older data from Mark II at SLAC, CELLO at DESY, and Crystal Ball at SLAC. Imposing the basic constraints required by analyticity, unitarity, and crossing symmetry and making use of Low’s low-energy theorem for QED, they were able to extract the final-state, strong-interaction scattering amplitudes for the intermediate <span>(pi pi rightarrow pi pi )</span> and <span>(pi pi rightarrow K overline{K})</span> reactions in a model-independent fashion. In addition, they provided good fits to the respective <span>(gamma gamma rightarrow pi pi )</span> cross-sections that are known in the low-energy sector in the restricted angular range, <span>(| cos theta | &lt; 0.6 - 0.8)</span>. Using the parameters obtained in this fashion, these authors constructed the <span>(gamma gamma rightarrow pi pi )</span> cross-sections integrated over the full angular range. In the present work, we use a version of chiral perturbation theory developed by Oller and Oset to evaluate the final-state, strong-interaction amplitudes theoretically, and we compare our low-energy QCD-based results with the amplitudes extracted by Dai and Pennington. We also calculate the <span>(gamma gamma rightarrow pi pi )</span> cross-sections (integrated over the full angular range) and compare them with those obtained by Dai and Pennington. These calculations give a more detailed insight into the fit of chiral perturbation theory, not just to the measured <span>(gamma gamma rightarrow pi pi )</span> cross-sections, as is usually presented, but rather to a higher level of detail through the available analysis of the experimental data for the underlying final-state, strong-interaction, meson–meson scattering amplitudes <span>(pi pi rightarrow pi pi )</span> and <span>(pi pi rightarrow K overline{K})</span> themselves. The fits appear to be sensible over the energy range considered. The detailed calculations of strong-interaction transition matrices, as presented in this paper, also pave the way to address the possible presence of the postulated kaonium atom <span>(K^+ K^-)</span> in the cross-section.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-025-01524-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602278","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}

{"title":"Unraveling alignment pattern in high-energy particles via transverse momentum disbalance analysis","authors":"Igor Lokhtin,&nbsp;Aleksei Nikolskii,&nbsp;Alexander Snigirev","doi":"10.1140/epja/s10050-025-01529-1","DOIUrl":"10.1140/epja/s10050-025-01529-1","url":null,"abstract":"<div><p>The hypothesis of the relation between strong azimuthal correlations, known as alignment, in families of hadrons and photons observed in cosmic ray experiments and the selection procedure of the highest-energy particles together with the transverse momentum conservation are tested in the framework of the HYDJET++ model. The results show that the high degree of alignment can appear in nucleus-nucleus interactions at reasonable values of the transverse momentum disbalance of most energetic detected particles.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602158","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}

{"title":"Statistical framework for nuclear parameter uncertainties in nucleosynthesis modeling of r- and i-process","authors":"Sébastien Martinet,&nbsp;Stephane Goriely,&nbsp;Arthur Choplin,&nbsp;Lionel Siess","doi":"10.1140/epja/s10050-025-01510-y","DOIUrl":"10.1140/epja/s10050-025-01510-y","url":null,"abstract":"<div><p>Propagating nuclear uncertainties to nucleosynthesis simulations is key to understand the impact of theoretical uncertainties on the predictions, especially for processes far from the stability region, where nuclear properties are scarcely known. While systematic (model) uncertainties have been thoroughly studied, the statistical (parameter) ones have been more rarely explored, as constraining them is more challenging. We present here a methodology to determine coherently parameter uncertainties by anchoring the theoretical uncertainties to the experimentally known nuclear properties through the use of the Backward Forward Monte Carlo method. We use this methodology for two nucleosynthesis processes: the intermediate neutron capture process (i-process) and the rapid neutron capture process (r-process). We determine coherently for the i-process the uncertainties from the (n,<span>(gamma )</span>) rates while we explore the impact of nuclear mass uncertainties for the r-process. The effect of parameter uncertainties on the final nucleosynthesis is in the same order as model uncertainties, suggesting the crucial need for more experimental constraints on key nuclei of interest. We show how key nuclear properties, such as relevant (n,<span>(gamma )</span>) rates impacting the i-process tracers, could enhance tremendously the prediction of stellar evolution models by experimentally constraining them.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-025-01510-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583540","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}

{"title":"The art of modeling nuclear reactions with weakly bound nuclei: status and perspectives","authors":"Antonio M. Moro,&nbsp;Jesús Casal,&nbsp;Mario Gómez-Ramos","doi":"10.1140/epja/s10050-025-01500-0","DOIUrl":"10.1140/epja/s10050-025-01500-0","url":null,"abstract":"<div><p>We give an overview of the theoretical description of nuclear reactions involving weakly-bound nuclei. Some of the more widespread reaction formalisms employed in the analysis of these reactions are briefly introduced, including various recent developments. We put special emphasis on the continuum-discretized coupled-channel (CDCC) method and its extensions to incorporate core and target excitations as well as its application to three-body projectiles. The role of the continuum for one-nucleon transfer reactions is also discussed. The problem of the evaluation of inclusive breakup cross sections is addressed within the Ichimura–Austern–Vincent (IAV) model. Other methods, such as those based on a semiclasical description of the scattering process, are also briefly introduced and some of their applications are discussed and a brief discussion on topics of current interest, such as nucleon-nucleon correlations, uncertainty evaluation and non-locality is presented.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-025-01500-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143583412","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}

{"title":"Search for spontaneous fission of (^{234})U, (^{235})U, (^{236})U, and (^{238})U by gamma spectrometry","authors":"F. A. Danevich,&nbsp;S. S. Drapey,&nbsp;D. V. Kasperovych,&nbsp;V. I. Kirischuk,&nbsp;V. V. Kobychev,&nbsp;B. M. Kropivyansky,&nbsp;V. I. Tretyak","doi":"10.1140/epja/s10050-025-01518-4","DOIUrl":"10.1140/epja/s10050-025-01518-4","url":null,"abstract":"<div><p>Experimental search for spontaneous fission and cluster decays of <span>(^{234})</span>U, <span>(^{235})</span>U, <span>(^{236})</span>U and <span>(^{238})</span>U was carried out with a certified 230-g uranium oxide sample enriched in <span>(^{235})</span>U to 93.2%. The sample was measured over 46.3 days by using a 70 cm<span>(^3)</span> broad energy germanium detector. The search for the fission fragments and their daughters was performed by using <span>(gamma )</span> quanta of energy <span>(&gt;1.5)</span> MeV expected in <span>(beta ^-)</span> decays. No such <span>(gamma )</span> peaks were observed in the experimental data, thus, upper limits on the fragments’ yields are set. The lower limits on partial half-lives are obtained at the level of <span>(5.0times 10^{10}-2.6times 10^{17})</span> years for the corresponding cold fission and cluster decay channels. In particular, 5 limits for <span>(^{235})</span>U and <span>(^{238})</span>U cold fission exceed the prediction made by S.B. Duarte et al. in framework of the effective liquid drop model by a factor of 1.6–227. Therefore, the obtained results can be used to improve the theoretical frameworks to study the cold fission processes.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-025-01518-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581044","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}

{"title":"A high energy resolution gas target setup to study selected NeNa cycle reactions","authors":"E. Masha,&nbsp;F. Casaburo,&nbsp;R. S. Sidhu,&nbsp;M. Aliotta,&nbsp;C. Ananna,&nbsp;L. Barbieri,&nbsp;F. Barile,&nbsp;D. Bemmerer,&nbsp;A. Best,&nbsp;A. Boeltzig,&nbsp;C. Broggini,&nbsp;C. G. Bruno,&nbsp;A. Caciolli,&nbsp;M. Campostrini,&nbsp;F. Cavanna,&nbsp;G. F. Ciani,&nbsp;P. Colombetti,&nbsp;A. Compagnucci,&nbsp;P. Corvisiero,&nbsp;L. Csedreki,&nbsp;T. Davinson,&nbsp;R. Depalo,&nbsp;D. Dell’Aquila,&nbsp;A. Di Leva,&nbsp;Z. Elekes,&nbsp;F. Ferraro,&nbsp;A. Formicola,&nbsp;Zs. Fülöp,&nbsp;G. Gervino,&nbsp;R. M. Gesuè,&nbsp;A. Guglielmetti,&nbsp;C. Gustavino,&nbsp;Gy. Gyürky,&nbsp;G. Imbriani,&nbsp;M. Junker,&nbsp;M. Lugaro,&nbsp;P. Marigo,&nbsp;J. Marsh,&nbsp;R. Menegazzo,&nbsp;D. Mercogliano,&nbsp;V. Paticchio,&nbsp;D. Piatti,&nbsp;P. Prati,&nbsp;D. Rapagnani,&nbsp;V. Rigato,&nbsp;D. Robb,&nbsp;L. Schiavulli,&nbsp;J. Skowronski,&nbsp;O. Straniero,&nbsp;T. Szücs,&nbsp;S. Zavatarelli","doi":"10.1140/epja/s10050-025-01512-w","DOIUrl":"10.1140/epja/s10050-025-01512-w","url":null,"abstract":"<div><p>The neon-sodium cycle of hydrogen burning occurs in several astrophysical sites, such as asymptotic giant branch stars and novae, affecting the production of neon and sodium isotopes. To enhance the accuracy of predicted nucleosynthesis yields, there is a pressing need for new experimental investigations of the cross sections of the reactions involved in this cycle at energies relevant to astrophysics. The 400 kV accelerator at the Laboratory for Underground Nuclear Astrophysics (LUNA) provides a unique advantage relative to above-ground laboratories thanks to its deep underground location within the Gran Sasso National Laboratory (INFN-LNGS) in Italy. We performed experiments at LUNA on two of the reactions of the NeNa cycle: <span>(^{20})</span>Ne(p,<span>(gamma )^{21})</span>Na and <span>(^{21})</span>Ne(p,<span>(gamma )^{22})</span>Na using a high-purity gas target system for isotopically enriched gases coupled with two high-resolution germanium detectors, surrounded by copper and lead shielding to further reduce the natural background at LUNA. We describe the detailed characterization of the experimental setup performed through Monte Carlo simulations, and the method for the precise determination of resonance energies, giving improved values of <span>(E_{textrm{r}})</span> = 127.3 ± 0.5 keV, 271.4 ± 0.4 keV, 272.3 ± 0.4 keV, 291.5 ± 0.5 keV and 352.6 ± 0.4 keV. Additionally, decay branching ratios for the <span>(E_{textrm{x}})</span> = 7016.4 keV excited state in <span>(^{22})</span>Na, and three new transitions (<span>(textrm{R} rightarrow 4770)</span> keV, <span>(textrm{R}rightarrow 3059.4)</span> keV and <span>(textrm{R}rightarrow 583.05)</span> keV) in the <span>(E_{textrm{r}})</span> = 291.5  keV resonance, are also reported.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"61 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571111","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}