Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)最新文献_第7页

Measurement of the 136Xe ββ2ν half-life with NEXT-White NEXT-White法测定136Xe ββ2ν半衰期

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) Pub Date : 2022-03-08 DOI: 10.22323/1.380.0304

M. Martínez-Vara

{"title":"Measurement of the 136Xe ββ2ν half-life with NEXT-White","authors":"M. Martínez-Vara","doi":"10.22323/1.380.0304","DOIUrl":"https://doi.org/10.22323/1.380.0304","url":null,"abstract":"TheNEXT (Neutrino Experiment with a Xenon TPC) collaboration aims at the sensitive search of the neutrinoless double beta decay (ββ0ν) of 136Xe at the Laboratorio Subterraneo de Canfranc (LSC). The observation of such a lepton-number-violation process would prove the Majorana nature of neutrinos, providing also handles for an eventual measurement of the neutrino absolute mass. A first large-scale prototype of a highpressure gas-Xenon electroluminescent TPC, NEXT-white, is being operated at the LSC since 2016. This 5-kg radiopure detector has already proven the outstanding performance of the NEXT technology in terms of the energy resolution (<1% FWHM at 2.6 MeV) and the topology-based background rejection. NEXT-White has also measured the relevant backgrounds for the ββ0ν search using both 136Xe-depleted and 136Xe-enriched xenon. In this talk, the measurement of the half-life of the two neutrino mode of the double beta decay (ββ2ν) will be presented. For this measurement, two novel techniques in the field have been used: 1) a RichardsonLucy deconvolution to reconstruct the single and double electron tracks, boosting the background rejection, and 2) a direct subtraction of the ββ backgrounds, measured with 136Xe-depleted data. These techniques allow for background-model-dependent and background-model-independent results, demonstrating the robustness of the ββ2ν half-life measurement and the unique capabilities of NEXT. The physics program of NEXT-White will be completed in late 2021, when the construction of the NEXT-100 detector at the LSC starts. Holding 100 kg of 136Xe and with a background index below 5×10−4 counts/keV/kg/year, this detector will perform the first competitive ββ0ν search within the NEXT roadmap. As validated with NEXT-White, NEXT-100 will reach a sensitivity to the half-life of 6×10^25 y after 3 years of data taking, paving the way for future ton-scale phases.","PeriodicalId":135659,"journal":{"name":"Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123986624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

HAPG mosaic crystal Von Hamos spectrometer for high precision exotic atoms spectroscopy 用于高精度外来原子光谱的HAPG镶嵌晶体冯·哈莫斯光谱仪

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) Pub Date : 2022-03-08 DOI: 10.22323/1.380.0195

A. Scordo, C. Curceanu, Veronica Di Leo, M. Miliucci, F. Sirghi

引用次数: 1

The Readout Electronics of the Mu2e Electromagnetic Calorimeter Mu2e电磁量热计的读出电子学

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) Pub Date : 2022-03-07 DOI: 10.22323/1.380.0113

L. Morescalchi, F. Cervelli, Stefano DiFalco, S. Donati, A. Gioiosa, D. Pasciuto, E. Pedreschi, F. Raffaelli, F. Spinella, A. Taffara, S. Ceravolo, Francesco Colao, G. Corradi, E. Diociaiuti, S. Giovannella, F. Happacher, M. Martini, S. Miscetti, D. Paesani, I. Sarra

引用次数: 1

New observation of α decay of $^{190}Pt$ to the first excited level of $^{186}Os$ $^{190}Pt$ α衰变到$^{186}Os$第一激发态的新观察

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) Pub Date : 2022-03-07 DOI: 10.22323/1.380.0328

M. Romaniuk, F. Danevich, M. Hult, A. Junghans, Dmytro Kasperovich, B. Kropivyansky, G. Lutter, G. Marissens, O. Polischuk, H. Stroh, S. Tessalina, V. Tretyak, B. Ware

引用次数: 0

Latest results of hadronic resonance production with ALICE at the LHC 大型强子对撞机ALICE产生强子共振的最新结果

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) Pub Date : 2022-03-07 DOI: 10.22323/1.380.0226

D. Mallick

{"title":"Latest results of hadronic resonance production with ALICE at the LHC","authors":"D. Mallick","doi":"10.22323/1.380.0226","DOIUrl":"https://doi.org/10.22323/1.380.0226","url":null,"abstract":"Resonances with very short lifetimes can be used to probe the rescattering and regeneration processes in the hadronic phase of the system produced after a high-energy collisions. These processes are studied by measuring resonance yields as a function of the system size and collision energy and comparing them to model calculations with and without the hadronic cascades. We present measurements of transverse momentum spectra, integrated yields (dN/dy), mean transverse momenta (〈pT〉), and angular distributions for light flavor hadronic resonances in pp, p–Pb, Xe–Xe, and Pb–Pb collisions at LHC energies. The 〈pT〉 of resonances as a function of event multiplicity in central Pb–Pb collisions follow the same mass ordering as for other hadrons, expected from the hydrodynamic expansion of the system. At high pT (> 8 GeV/c), nuclear modification factor (RAA) of light flavor hadrons in central Pb–Pb collisions shows strong suppression, whereas the nuclear modification factor in p–Pb collisions, known as RpPb is consistent with unity. This parton energy loss effect is independent of the particle species. Further, in non-central heavy-ion collisions, the vector mesons can be polarized due to spin-orbital-angular-momentum interaction or hadronization from polarized quarks due to their significant initial angular momentum. Recent measurements of spin alignment for K0 and φ mesons produced at midrapidity in pp and Pb–Pb collisions are discussed.","PeriodicalId":135659,"journal":{"name":"Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133713939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Overlap integrals of di-neutron cluster state and shell model state 双中子簇态与壳模型态的重叠积分

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) Pub Date : 2022-03-07 DOI: 10.22323/1.380.0326

M. Ito

引用次数: 0

Experiments with mid-heavy antiprotonic atoms in AEgIS AEgIS中重反质子原子实验

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) Pub Date : 2022-03-06 DOI: 10.22323/1.380.0446

G. Kornakov, M. Auziņš, B. Bergmann, P. Burian, G. Bonomi, Roberto Sennen Brusa, A. Camper, R. Caravita, F. Castelli, P. Cheinet, R. Ciuryło, D. Comparat, G. Consolati, M. Doser, H. Gjersdal, Lisa Teresa Gloggler, L. Graczykowski, F. Guatieri, S. Haider, S. Huck, M. Janik, G. Kasprowicz, Gunn Khatri, L. Kłosowski, L. Lappo, C. Malbrunot, S. Mariazzi, G. Nebbia, L. Nowak, D. Nowicka, Emanuel Oswald, D. Pagano, L. Penasa, V. Petráček, M. Piwiński, S. Pospíšil, L. Povolo, F. Prelz, S. Rangwala, Benjamin Rienacker, A. Rotondi, O. Røhne, H. Sandaker, I. Štekl, D. Tefelski, Ingmari Christa Tietje, M. Volponi, T. Wolz, M. Zawada, C. Zimmer, N. Zurlo

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引用次数: 0

Laser spectroscopy of three-body antiprotonic and pionic helium atoms at CERN and PSI 欧洲核子研究中心和PSI三体反质子和电子氦原子的激光光谱

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) Pub Date : 2022-03-04 DOI: 10.22323/1.380.0451

M. Hori

引用次数: 0

CEvNS nuclear physics aspects CEvNS核物理方面

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) Pub Date : 2022-03-04 DOI: 10.22323/1.380.0265

D. Papoulias

引用次数: 0

Methodology of accounting for aQGC effect on background for improvement of the limits on EFT coupling constants in case of electroweak $Zgamma$ production at the conditions of Run2 at the ATLAS experiment 考虑aQGC对背景效应的影响，以提高ATLAS实验中Run2条件下电弱$Zgamma$产生时EFT耦合常数限制的方法

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) Pub Date : 2022-03-04 DOI: 10.22323/1.380.0127

A. Semushin, E. Soldatov

{"title":"Methodology of accounting for aQGC effect on background for improvement of the limits on EFT coupling constants in case of electroweak $Zgamma$ production at the conditions of Run2 at the ATLAS experiment","authors":"A. Semushin, E. Soldatov","doi":"10.22323/1.380.0127","DOIUrl":"https://doi.org/10.22323/1.380.0127","url":null,"abstract":"In this report the model-independent effective field theory phenomenology is used to parameterize the anomalous couplings in the Lagrangian with higher-dimensional operators. Setting limits on the operator’s coefficients (EFT coupling constants) leads to new physics constraints. The decomposition technique of MC event generator MG5_aMC is used to produce events corresponding separate terms of the full amplitude. In the classical version of setting these limits, all background processes are considered as non-depending on coefficients. However in general case one or several backgrounds can be affected by non-zero EFT coupling constants. This report presents the way of accounting such background impact in limits setting. As an example the electroweak Zγ production is considered, since this process is extremely sensitive to anomalous quartic gauge couplings. As a result the limits on the EFT coefficients fT0 and fM0 were obtained with accounting of the possible new physics in the electroweakWγ production background, which are 1% and 5% tighter respectively than classical ones.","PeriodicalId":135659,"journal":{"name":"Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123163126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1