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1.
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Spectroscopy of $^{187}$Tl: shape coexistence
/ Guo, C Y (Peking U., SKLNPT) ; Zhang, W Q (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Huang, H (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Zhang, S Q (Peking U., SKLNPT) ; Li, Z H (Peking U., SKLNPT) ; Liu, Z (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Hua, H (Peking U., SKLNPT) ; Luo, D W (Peking U., SKLNPT) ; Wu, H Y (Peking U., SKLNPT ; Beijing, Inst. Atomic Energy) ; Andreyev, A N (York U., England ; Jefferson Lab ; JAEA, Ibaraki) et al.
The prompt and delayed $\gamma $-ray spectra of $^{187}$Tl was studied via the $^{142}$Nd($^{50}$Cr, 3p2n)$^{187}$Tl fusion-evaporation reaction at a beam energy of 255 MeV. An enhanced level scheme of $^{187}$Tl was established. [...]
2024 - 10 p.
- Published in : Eur. Phys. J. A 60 (2024) 165
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2.
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Shape evolution in even-mass $^{98-104}$Zr isotopes via lifetime measurements using the $\gamma \gamma $-coincidence technique
/ Pasqualato, G. (IJCLab, Orsay) ; Ansari, S. (IRFU, Saclay) ; Heines, J.S. (Oslo U.) ; Modamio, V. (Oslo U.) ; Görgen, A. (Oslo U.) ; Korten, W. (IRFU, Saclay) ; Ljungvall, J. (IJCLab, Orsay ; Strasbourg, IPHC) ; Clément, E. (GANIL) ; Dudouet, J. (IP2I, Lyon) ; Lemasson, A. (GANIL) et al.
The Zirconium (Z = 40) isotopic chain has attracted interest for more than four decades. The abrupt lowering of the energy of the first $2^+$ state and the increase in the transition strength B(E2; $2_1^\rightarrow 0_1^+$ going from $^{98}$Zr to $^{100}$Zr has been the first example of "quantum phase transition" in nuclear shapes, which has few equivalents in the nuclear chart. [...]
arXiv:2410.17004.-
2023-11-21 - 13 p.
- Published in : Eur. Phys. J. A 59 (2023) 276
Fulltext: PDF;
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3.
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First observation of a shape isomer and a low-lying strongly-coupled prolate band in neutron-deficient semi-magic $^{187}$Pb
/ Zhang, W Q (Lanzhou, Inst. Modern Phys. ; CAS, Beijing) ; Andreyev, A N (York U., England ; JAERI, Tokai) ; Liu, Z (Lanzhou, Inst. Modern Phys. ; CAS, Beijing) ; Seweryniak, D (Argonne, PHY) ; Huang, H (Lanzhou, Inst. Modern Phys. ; CAS, Beijing) ; Li, Z H (Peking U., SKLNPT) ; Li, J G (Lanzhou, Inst. Modern Phys. ; Peking U., SKLNPT) ; Guo, C Y (Peking U., SKLNPT) ; Doherty, D T (Surrey U.) ; Barzakh, A E (St. Petersburg, INP) et al.
Prompt and delayed γ-ray spectroscopy of the neutron-deficient, semi-magic isotope 187Pb has been performed using the recoil-decay and isomer-decay tagging techniques at the Argonne Gas-Filled Analyzer. A new 5.15(15)-μs isomeric state at only 308 keV above the spherical 3/2− ground state is identified and classified as a shape isomer. [...]
2022 - 7 p.
- Published in : Phys. Lett. B 829 (2022) 137129
Publication: PDF;
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4.
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Improving Variational Autoencoders for New Physics Detection at the LHC with Normalizing Flows
/ Jawahar, Pratik (CERN) ; Aarrestad, Thea (CERN) ; Chernyavskaya, Nadezda (CERN) ; Pierini, Maurizio (CERN) ; Wozniak, Kinga A. (CERN) ; Ngadiuba, Jennifer (Fermilab) ; Duarte, Javier (UC, San Diego) ; Tsan, Steven (UC, San Diego)
We investigate how to improve new physics detection strategies exploiting variational autoencoders and normalizing flows for anomaly detection at the Large Hadron Collider. As a working example, we consider the DarkMachines challenge dataset. [...]
arXiv:2110.08508; FERMILAB-PUB-21-519-CMS.-
2022-02-28 - 3 p.
- Published in : Front. Big Data 5 (2022) 803685
Fulltext: 2110.08508 - PDF; fermilab-pub-21-519-cms - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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5.
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Golden Probe of Electroweak Symmetry Breaking
/ Chen, Yi (Caltech ; CERN) ; Lykken, Joe (Fermilab) ; Spiropulu, Maria (Caltech) ; Stolarski, Daniel (Ottawa Carleton Inst. Phys.) ; Vega-Morales, Roberto (Granada U., Theor. Phys. Astrophys. ; CAFPE, Granada)
The ratio of the Higgs couplings to $WW$ and $ZZ$ pairs, $\lambda_{WZ}$, is a fundamental parameter in electroweak symmetry breaking as well as a measure of the (approximate) custodial symmetry possessed by the gauge boson mass matrix. We show that Higgs decays to four leptons are sensitive, via tree level/1-loop interference effects, to both the magnitude and, in particular, overall sign of $\lambda_{WZ}$. [...]
arXiv:1608.02159; UG-FT-322-16; CAFPE-192-16; FERMILAB-PUB-16-304-PPD; UG-FT 322-16} \PREPRINT{CAFPE 192-16} UG-FT 322-16; CAFPE 192-16; FERMILAB-PUB-16-304-PPD.-
2016-12-09 - 6 p.
- Published in : Phys. Rev. Lett. 117 (2016) 241801
Fulltext: 10.1103_PhysRevLett.117.241801 - PDF; arXiv:1608.02159 - PDF; External links: Fermilab Library Server (fulltext available); Open Access fulltext
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6.
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Les Houches 2015: Physics at TeV colliders - new physics working group report
/ Brooijmans, G. (Columbia U.) ; Delaunay, C. (Annecy, LAPTH) ; Delgado, A. (Notre Dame U.) ; Englert, C. (Glasgow U.) ; Falkowski, A. (Orsay, LPT) ; Fuks, B. (Paris, LPTHE) ; Nikitenko, S. (Imperial Coll., London) ; Sekmen, S. (CHEP, Taegu) ; Barducci, D. (Annecy, LAPTH) ; Bernon, J. (LPSC, Grenoble) et al.
We present the activities of the 'New Physics' working group for the 'Physics at TeV Colliders' workshop (Les Houches, France, 1-19 June, 2015). [...]
arXiv:1605.02684.
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2016. - 197 p.
Preprint - Full text
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7.
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Golden probe of the top Yukuwa coupling
/ Chen, Yi (Caltech) ; Stolarski, Daniel (CERN) ; Vega-Morales, Roberto (Orsay, LPT)
We perform a preliminary study of the ability of the Higgs decay to four leptons to shed light on the top quark Yukawa couplings. In particular we examine whether the $h\to 4\ell$ `golden channel' is sensitive to the $CP$ properties of the top quark couplings to the Higgs boson. [...]
arXiv:1505.01168; CERN-PH-TH-2015-106; LPT-ORSAY-15-32; CERN-PH-TH-2015-106; LPT-Orsay-15-32; CERN-PH-TH-2015-106.-
Geneva : CERN, 2015-09-14 - 11 p.
- Published in : Phys. Rev. D 92 (2015) 053003
APS Open Access article: PDF; Fulltext: arXiv:1505.01168 - PDF; 1505.01168 - PDF; External link: Preprint
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8.
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One-particle excitations outside the 54Ti semi-magic core : The 55V and 55Ti yrast structures
/ Zhu, S ; Janssens, R V F ; Fornal, B ; Freeman, S J ; Honma, M ; Broda, R ; Carpenter, M P ; Deacon, A N ; Kay, B P ; Kondev, F G et al.
2007
- Published in : Phys. Lett. B 650 (2007) 135-140
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