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Author Batra, A.; Câmara, H.B.; Joaquim, F.R.; Nath, N.; Srivastava, R.; Valle, J.W.F.
Title Axion framework with color-mediated Dirac neutrino masses Type Journal Article
Year 2025 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume (down) 868 Issue Pages 139629 - 11pp
Keywords
Abstract We propose a KSVZ-type axion framework in which vector-like quarks (VLQ) and colored scalars generate Dirac neutrino masses radiatively. The global Peccei-Quinn symmetry (under which the exotic fermions are charged) addresses the strong CP problem and ensures the Dirac nature of neutrinos. The axion also accounts for the observed cosmological dark matter. We systematically explore all viable VLQ representations. Depending on the specific scenario, the framework predicts distinct axion-to-photon couplings, testable through haloscope and helioscope experiments, as well as potentially significant flavor-violating quark-axion interactions.
Address [Batra, A.; Camara, H. B.; Joaquim, F. R.] Univ Lisbon, Inst Super Tecn, Dept Fis, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal, Email: aditya.batra@tecnico.ulisboa.pt;
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:001510742900005 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6710
Permanent link to this record
 
 
Author Zhang, X.Y.; Shi, P.P.; Guo, F.K.
Title Production of 1-+ exotic charmonium-like states in electron-positron collisions Type Journal Article
Year 2025 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume (down) 867 Issue Pages 139603 - 8pp
Keywords
Abstract The absence of observed charmonium-like states with the exotic quantum numbers J=1+ has prompted us to investigate the production rates of the 1 DD, (2420) and D D, (2420) hadronic molecules, which we refer to as n and, respectively, in electron-positron collisions. Assuming a hadronic molecular nature for the vector charmonium-like states (4360) and yr(4415), we evaluate the radiative decay widths of (4360)-> 77 and (4415) yn. Using these decay widths, we estimate the cross sections for producing, and, in electron-positron annihilations, as well as the event numbers at the planned Super r-Charm Facility. Our results suggest that the ideal energy region for observing these states is around 4.44 and 4.50 GeV, just above the D D (2420) and D D (2460) thresholds, respectively.
Address [Zhang, Xiao-Yu; Guo, Feng-Kun] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China, Email: zhangxiaoyu@itp.ac.cn;
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:001504793800004 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6700
Permanent link to this record
 
 
Author Alicki, R.; Barenboim, G.; Jenkins, A.
Title The irreversible relaxation of inflation Type Journal Article
Year 2025 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume (down) 866 Issue Pages 139519 - 6pp
Keywords
Abstract Based on the results of a previous analysis of the Markovian master equation for the irreversible evolution of an open system embedded in de Sitter space [7], we include in the cosmological Friedmann equations a contribution from the presence of a physical bath at temperature T-dS = h//2 pi, where h is the Hubble parameter. We show that this provides a mechanism for the irreversible relaxation of the cosmological constant and a graceful exit to inflation, without need for subsequent reheating. Thermal particle production during inflation gives adiabatic, Gaussian, and approximately scale-invariant cosmological perturbations. We thus obtain the main features of inflation without any inflaton potential. To clarify the thermodynamic interpretation of these results, we consider the analogy of this irreversible relaxation to superfluorescence in quantum optics.
Address [Alicki, Robert; Jenkins, Alejandro] Univ Gdansk, Int Ctr Theory Quantum Technol ICTQT, PL-80308 Gdansk, Poland, Email: robert.alicki@ug.edu.pl;
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:001495234200001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6682
Permanent link to this record
 
 
Author IDS Collaboration (Olaizola, B. et al); Algora, A.; Nacher, E.
Title The 76Cu conundrum remains unsolved Type Journal Article
Year 2025 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume (down) 866 Issue Pages 139551 - 8pp
Keywords Cu-76; Zn-76; beta decay; Isomer
Abstract Near the doubly-magic nucleus Ni-78 (Z = 28, N = 50), there has been a decades-long debate on the existence of a long-lived isomer in Cu-76. A recent mass measurement claimed to have settled the debate, by measuring the energy of the isomer and shedding light on the structure of the nucleus. In this work, we present new, more accurate, and precise values of the half-lives of the isomeric and ground states in Cu-76. Our findings suggest that both states have very similar half-lives, in the 600-700 ms range, in disagreement with the literature values, implying that they cannot be differentiated by their decay curves. These results raise more questions than they answer, reopening the debate and showing that the structures in Cu-76 are still not fully understood.
Address [Olaizola, B.; Borge, M. J. G.; Nacher, E.; Perea, A.; Tengblad, O.; Vinals, S.] CSIC, Inst Estruct Mat, Madrid 28006, Spain, Email: bruno.olaizola@csic.es;
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:001496137200002 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6683
Permanent link to this record
 
 
Author Albaladejo, M.; Canoa, A.; Nieves, J.; Pelaez, J.R.; Ruiz Arriola, E.; Ruiz de Elvira, J.
Title The role of chiral symmetry and the non-ordinary κ/K*0(700) nature in π±KS femtoscopic correlations Type Journal Article
Year 2025 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume (down) 866 Issue Pages 139552 - 5pp
Keywords
Abstract We show that the use of realistic pi K interactions, obtained from a dispersive analysis of scattering data, as well as relativistic corrections, are essential to describe recently observed pi +/- KS femtoscopic correlations. We demonstrate that the spontaneous chiral symmetry breaking dynamics and the non-ordinary features of the kappa/K0*(700)resonance, together with large cancellations between isospin channels, produce a large suppression of pi +/- KS femtoscopic correlations compared to widely used models. Within an improved version of the standard on-shell factorization formalism, we illustrate that compensating for this interaction suppression leads to source radii smaller than 1 fm, contrary to usual expectations, as well as larger correlation strengths. The relation between these two parameters cannot be accommodated within naive models describing the nature of the resonances. This may raise concerns about the applicability of popular but too simple approaches for systems with light mesons. However, the correlation-suppression effects we demonstrate here will be relevant in any formalism, and substantial corrections may be expected for other femtoscopic systems involving light mesons.
Address [Albaladejo, M.; Nieves, J.] UV, Inst Fis Corpuscular, Inst Invest Paterna, Ctr Mixto CSIC, Apartado 22085, Valencia 46071, Spain, Email: jacobore@ucm.es
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:001497532100002 Approved no
Is ISI yes International Collaboration no
Call Number IFIC @ pastor @ Serial 6686
Permanent link to this record
 
 
Author Gao, F.; Miramontes, A.S.; Papavassiliou, J.; Pawlowski, J.M.
Title Heavy-light mesons from a flavour-dependent interaction Type Journal Article
Year 2025 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume (down) 863 Issue Pages 139384 - 8pp
Keywords
Abstract We introduce a new framework for the physics of heavy-light mesons, whose key element is the effective incorporation of flavour-dependent contributions into the corresponding bound-state and quark gap equations. These terms originate from the fully-dressed quark-gluon vertices appearing in the kernels of these equations, and provide a natural distinction between “light” and “heavy” quarks. In this approach, only the classical form factor of the quark-gluon vertex is retained, and is evaluated in the so-called “symmetric” configuration. The standard Slavnov-Taylor identity links this form factor to the quark wave-function, allowing for the continuous transition from light to heavy quarks through the mere variation of the current quark mass in the gap equation. The method is used to compute the masses and decay constants of specific pseudoscalars and vector heavy-light systems, showing good overall agreement with both experimental data and lattice simulations.
Address [Gao, Fei] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China, Email: joannis.papavassiliou@uv.es
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:001446646700001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6566
Permanent link to this record
 
 
Author Zhang, G. et al; Algora, A.; Nacher, E.; Orrigo, S.E.A.; Perez-Vidal, R.M.; Rubio, B.
Title Approaching 100Sn: Structural evolution in 98,100Cd via lifetime measurements Type Journal Article
Year 2025 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume (down) 863 Issue Pages 139378 - 7pp
Keywords Nuclear structure; Lifetime measurement; Gamma-ray spectroscopy; Radioactive beams
Abstract The lifetimes of low-lying excited states below the 8(+) seniority isomer were directly measured using fast timing detectors in the neutron-deficient isotopes Cd-98,Cd-100. This experiment was conducted with the DEcay SPECtroscopy (DESPEC) setup at GSI, where the ions of interest were produced via a fragmentation reaction and identified using the FRagment Separator (FRS) before being implanted in the AIDA active stopper system, and the gamma rays emitted during the de-excitation of isomeric states were detected by the LaBr3 FATIMA Array. The newly deduced values for the reduced transition probabilities were compared with shell-model calculations using different interactions and effective charges. The results indicate that, while Cd-98 aligns well with a seniority scheme description, in Cd-100 the transition strengths among low-lying states are not fully reproduced, and the nature of these states remains an open problem within the present theoretical description. Ultimately, a key element in the description of this region, crucial for nuclear physics and astrophysics, appears to be the proton-neutron term of the nuclear effective interaction.
Address [Zhang, G.] Sun Yat Sen Univ, Sinofrench Inst Nucl Engn & Technol, Zhuhai 519082, Guangdong, Peoples R China, Email: daniele.mengoni@unipd.it
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:001458687900001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6643
Permanent link to this record
 
 
Author Song, J.; Yang, Z.Y.; Oset, E.
Title Searching for signals of an exotic I=1,JP=2+ state of D*K* nature and the structure of the Pc(4312) in the Λb→Σc plus plus D-K- reaction Type Journal Article
Year 2025 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume (down) 861 Issue Pages 139294 - 7pp
Keywords
Abstract This paper investigates the decay process Lambda-Sigma++-- with the objective of finding a predicted molecular state with isospin = 1, = 2+ of nature, plus finding support for the (4312) state as made out of Sigma. The mass distribution of the -- system shows distinct features as a consequence of the existence of this 2+ state, while the Sigma distribution exhibits a significant peak near the threshold, much bigger than phase space expectations, which is linked to our assumed Sigma nature of the (4312) state below the Sigma threshold. The reaction has been measured at LHCb Collaboration, but only the branching ratio is measured. The present study shows that much valuable information can be obtained about the predicted 2+ (2834) of nature and the (4312) states from the measurements of the mass distributions in this reaction, which will be accessible in the planned updates of LHCb.
Address [Song, Jing; Yang, Zi-Ying] Beihang Univ, Sch Phys, Beijing 102206, Peoples R China, Email: oset@ific.uv.es
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:001421800400001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6530
Permanent link to this record
 
 
Author ATLAS Collaboration (Aad, G. et al); Aikot, A.; Amos, K.R.; Bouchhar, N.; Cabrera Urban, S.; Cantero, J.; Castillo Gimenez, V.; Chitishvili, M.; Costa, M.J.; Curcio, F.; Didenko, M.; Escobar, C.; Fiorini, L.; Fuster, J.; Garcia, C.; Garcia Navarro, J.E.; Gomez Delegido, A.J.; Gonzalez de la Hoz, S.; Guerrero Rojas, J.G.R.; Hofer, J.; Lacasta, C.; Lanzac Berrocal, M.; Marti-Garcia, S.; Martinez Agullo, P.; Melini, D.; Mitsou, V.A.; Monsonis Romero, L.; Moreno Llacer, M.; Munoz Perez, D.; Navarro-Gonzalez, J.; Poveda, J.; Rubio Jimenez, A.; Ruiz-Martinez, A.; Saibel, A.; Salt, J.; Sanchez Sebastian, V.; Senthilkumar, V.; Soldevila, U.; Sanchez, J.; Torro Pastor, E.; Valero, A.; Valiente Moreno, E.; Valls Ferrer, J.A.; Varriale, L.; Villaplana Perez, M.; Vos, M.; Zakareishvili, T.
Title Constraint on the total width of the Higgs boson from Higgs boson and four-top-quark measurements in pp collisions at √s=13 TeV with the ATLAS detector Type Journal Article
Year 2025 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume (down) 861 Issue Pages 139277 - 21pp
Keywords
Abstract This Letter presents a constraint on the total width of the Higgs boson (Gamma(H)) using a combined measurement of on-shell Higgs boson production and the production of four top quarks, which involves contributions from off-shell Higgs boson-mediated processes. This method relies on the assumption that the tree-level Higgs-top Yukawa coupling strength is the same for on-shell and off-shell Higgs boson production processes, thereby avoiding any assumptions about the relationship between on-shell and off-shell gluon fusion Higgs production rates, which were central to previous measurements. The result is based on up to 140 fb(-1) of proton-proton collisions at a centre-of-mass energy of root s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider. The observed (expected) 95% confidence level upper limit on Gamma(H) is 450 MeV (75 MeV). Additionally, considering the constraint on the Higgs-top Yukawa coupling from loop-induced Higgs boson production and decay processes further yields an observed (expected) upper limit of 160 MeV (55 MeV).
Address [Gallagher, J.; Grant, C. M.; Green, M. J.; Jackson, P.; Kong, A. X. Y.; Pandya, H. D.; Ruggeri, T. A.; Saha, S.; Ting, E. X. L.; White, M. J.] Univ Adelaide, Dept Phys, Adelaide, SA, Australia
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:001413662700001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6626
Permanent link to this record
 
 
Author Montesinos, V.; Ikeno, N.; Oset, E.; Albaladejo, M.; Nieves, J.; Tolos, L.
Title On the determination of the D meson width in the nuclear medium with the transparency ratio Type Journal Article
Year 2025 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume (down) 860 Issue Pages 139172 - 6pp
Keywords
Abstract We have studied the feasibility of the experimental determination of the width of a D meson in a nuclear medium by using the method of the nuclear transparency. The cross section for inclusive production of a D+ in different nuclei is evaluated, taking care of the D+ absorption in the nucleus, or equivalently, the survival probability of the D+ in its way out of the nucleus from the point of production. We use present values of the in medium width of D mesons and calculate ratios of the cross sections for different nuclei to the 12 C nucleus as reference. We find ratios of the order of 0.6 for heavy nuclei, a large deviation from unity, which indicates that the method proposed is adequate to measure this relevant magnitude, so far only known theoretically.
Address [Montesinos, Victor; Oset, Eulogio; Albaladejo, Miguel; Nieves, Juan] Univ Valencia, CSIC Inst Invest Paterna, Ctr Mixto, Dept Fis Teor, Valencia 46071, Spain, Email: vicmonte@ific.uv.es;
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:001375755800001 Approved no
Is ISI yes International Collaboration no
Call Number IFIC @ pastor @ Serial 6372
Permanent link to this record