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Author |
Ilner, A.; Blair, J.; Cabrera, D.; Markert, C.; Bratkovskaya, E. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Probing hot and dense nuclear matter with K*, (K)over-bar* vector mesons |
Type |
Journal Article |
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Year |
2019 |
Publication |
Physical Review C |
Abbreviated Journal |
Phys. Rev. C |
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Volume |
99 |
Issue |
2 |
Pages |
024914 - 22pp |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We investigate the possibility of probing the hot and dense nuclear matter-created in relativistic heavyion collisions (HICs)-with strange vector mesons (K*, (K) over bar*). Our analysis is based on the nonequilibrium parton-hadron-string dynamics (PHSD) transport approach which incorporates partonic and hadronic degrees of freedom and describes the full dynamics of HIC on a microscopic level-starting from the primary nucleon-nucleon collisions to the formation of the strongly interacting quark gluon plasma (QGP), followed by dynamical hadronization of (anti)quarks as well as final hadronic elastic and inelastic interactions. This allows us to study the K* and (K) over bar* meson formation from the QGP as well as the in-medium effects related to the modification of their spectral properties during the propagation through the dense and hot hadronic environment in the expansion phase. We employ relativistic Breit-Wigner spectral functions for the K*, (K) over bar* mesons with self-energies obtained from a self-consistent coupled-channel G-matrix approach to study the role of in-medium effects on the K* and (K) over bar* meson dynamics in heavy-ion collisions from FAIR/NICA to LHC energies. According to our analysis most of the final K* /(K) over bar*'s, that can be observed experimentally by reconstruction of the invariant mass of pi + K((K) over bar) pairs, are produced during the late hadronic phase and originate dominantly from the K((K) over bar) + pi -> K*( (K) over bar*) formation channel. The amount of K*/ (K) over bar*'s, originating from the QGP channel is comparatively small even at LHC energies and those K* /(K) over bar*'s can hardly be reconstructed experimentally due to the rescattering of final pions and (anti)kaons. This mirrors the results from our previous study on the strange vector-meson production in heavy-ion collisions at RHIC energies. We demonstrate that K* /(K) over bar* in-medium effects should be visible at FAIR/NICA and BES RHIC energies, where the production of K* /(K) over bar*'s occurs at larger net-baryon densities. Finally, we present the experimental procedures to extract the information on the resonance masses and widths by fitting the final mass spectra at LHC energies. |
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Address |
[Ilner, Andrej; Bratkovskaya, Elena] Johann Wolfgang Goethe Univ Frankfurt Main, Inst Theoret Phys, D-60438 Frankfurt, Germany, Email: ilner@fias.uni-frankfurt.de |
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Amer Physical Soc |
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English |
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2469-9985 |
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Notes |
WOS:000459905400005 |
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no |
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yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
3925 |
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Author |
Choi, K.Y.; Gong, J.O.; Joh, J.; Park, W.I.; Seto, O. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Light cold dark matter from non-thermal decay |
Type |
Journal Article |
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Year |
2023 |
Publication |
Physics Letters B |
Abbreviated Journal |
Phys. Lett. B |
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Volume |
845 |
Issue |
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Pages |
138126 - 8pp |
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Keywords |
Dark matter; Non-thermal production; Axion; Q-ball; Dark matter; Non-thermal production; Axion; Q-ball; Dark matter; Non-thermal production; Axion; Q-ball |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We investigate the mass range and the corresponding free-streaming length scale of dark matter produced non-thermally from decay of heavy objects which can be either dominant or sub-dominant at the moment of decay. We show that the resulting dark matter could be very light well below keV scale with a free-streaming length satisfying the Lyman-alpha constraints. We demonstrate two explicit examples for such light cold dark matter. |
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Address |
[Choi, Ki-Young; Joh, Junghoon] Sungkyunkwan Univ, Dept Phys, Dept Phys, Suwon 16419, South Korea, Email: kiyoungchoi@skku.edu; |
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Elsevier |
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0370-2693 |
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Notes |
WOS:001155183100001 |
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no |
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yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5942 |
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Author |
Wang, E.; Xie, J.J.; Geng, L.S.; Oset, E. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
The X(4140) and X(4160) resonances in the e(+)e(-) -> gamma J/psi phi reaction |
Type |
Journal Article |
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Year |
2019 |
Publication |
Chinese Physics C |
Abbreviated Journal |
Chin. Phys. C |
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Volume |
43 |
Issue |
11 |
Pages |
113101 - 10pp |
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Keywords |
X(4140); J/psi phi scattering; heavy flavor hadrons; X(4160) |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We investigate the J/psi phi invariant mass distribution in the e(+)e(-) -> gamma J/psi phi reaction at a center-of-mass energy of root s = 4.6 GeV measured by the BESIII collaboration, which concluded that no significant signals were observed for e(+)e(-) -> gamma J/psi phi because of the low statistics. We show, however, that the J/psi phi invariant mass distribution is compatible with the existence of the X(4140) state, appearing as a peak, and a strong cusp structure at the D-s*(D) over bar (s)* threshold, resulting from the molecular nature of the X(4160) state, which provides a substantial contribution to the reaction. This is consistent with our previous analysis of the B+ -> J psi phi K+ decay measured by the LHCb collaboration. We strongly suggest further measurements of this process with more statistics to clarify the nature of the X(4140) and X(4160) resonances. |
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Address |
[Wang, En; Xie, Ju-Jun; Geng, Li-Sheng] Zhengzhou Univ, Sch Phys, Zhengzhou 450001, Henan, Peoples R China, Email: lisheng.geng@buaa.edu.cn |
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Iop Publishing Ltd |
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English |
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ISSN |
1674-1137 |
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Notes |
WOS:000493109100008 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
4187 |
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Author |
Hamacher-Baumann, P.; Lu, X.G.; Martin-Albo, J. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Neutrino-hydrogen interactions with a high-pressure time projection chamber |
Type |
Journal Article |
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Year |
2020 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
102 |
Issue |
3 |
Pages |
033005 - 15pp |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We investigate the idea of detecting pure neutrino-hydrogen interactions in a multinuclear target using the transverse kinematic imbalance technique [Lu et al., Phys. Rev. D 92, 051302 (2015)] in a high-pressure time projection chamber (HPTPC). With full solid-angle acceptance, MeV-level proton tracking threshold, state-of-the-art tracking resolution, and an 0(100 m(3)) gas volume at 10 bar, an HPTPC could provide an opportunity to realize this technique. We propose the use of hydrogen-rich gases in the TPC to achieve high detection purity with a large hydrogen mass. With the projected neutrino beam exposure at the DUNE experiment, neutrino-hydrogen events of the order of 10(4) per year with purity above 90% could be achieved with such an HPTPC using methane gas. In this paper, we present a systematic study of the event rate and purity for a variety of argon-alkanc mixtures, and examine these gas candidates for the TPC tracking-related properties. |
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Address |
[Hamacher-Baumann, Philip] Rhein Westfal TH Aachen, Phys Inst 3, D-52056 Aachen, Germany, Email: hamacher.baumann@physik.rwth-aachen.de; |
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Amer Physical Soc |
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English |
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ISSN |
1550-7998 |
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Notes |
WOS:000562630500001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
4512 |
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Permanent link to this record |
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Author |
Bandyopadhyay, P.; Jangid, S.; Karan, A. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Constraining scalar doublet and triplet leptoquarks with vacuum stability and perturbativity |
Type |
Journal Article |
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Year |
2022 |
Publication |
European Physical Journal C |
Abbreviated Journal |
Eur. Phys. J. C |
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Volume |
82 |
Issue |
6 |
Pages |
516 - 44pp |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We investigate the constraints on the leptoquark Yukawa couplings and the Higgs-leptoquark quartic couplings for scalar doublet leptoquark (R) over tilde (2), scalar triplet leptoquark S-3 and their combination with both three generations and one generation with respect to perturbative unitarity and vacuum stability. The perturbative unitarity of all the dimensionless couplings is studied via one- and two-loop beta functions. New SU(2)(L) multiplets in terms of these leptoquarks are introduced to fabricate Landau poles at the two-loop level in the gauge coupling g(2) at 10(19.7) GeV and 10(14.4) GeV, respectively, for the S-3 and (R) over tilde (2) + S-3 models with three generations. However, such Landau poles cease to exist for (R) over tilde (2) and any of these extensions with both one and two generations up to Planck scale. The Higgs-leptoquark quartic couplings acquire severe constraints to protect Planck scale perturbativity, whereas leptoquark Yukawa couplings acquire some upper bound in order to respect Planck scale stability of Higgs vacuum. The Higgs quartic coupling at the two-loop level constrains the leptoquark Yukawa couplings for (R) over tilde (2), S-3, (R) over tilde (2) + S-3 with values less than or similar to 1.30, 3.90, 1.00 with three generations. In the effective potential approach, the presence of any of these leptoquarks with any number of generations pushes the metastable vacuum of the Standard Model to the stable region. |
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Address |
[Bandyopadhyay, Priyotosh; Jangid, Shilpa; Karan, Anirban] Indian Inst Technol Hyderabad, Sangareddy 502284, Telangana, India, Email: bpriyo@phy.iith.ac.in; |
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Springer |
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English |
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Edition |
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ISSN |
1434-6044 |
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Notes |
WOS:000808355200001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5251 |
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Permanent link to this record |
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Author |
Abreu, L.M.; Nery, E.S.; Correa, E.B.S. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Inverse magnetic catalysis and size-dependent effects on the chiral symmetry restoration |
Type |
Journal Article |
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Year |
2023 |
Publication |
European Physical Journal A |
Abbreviated Journal |
Eur. Phys. J. A |
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Volume |
59 |
Issue |
7 |
Pages |
157 - 12pp |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We investigate the combined finite-size and thermo-magnetic effects on the properties of the quark matter, in the context of the two-flavored Nambu-Jona-Lasinio model. In particular, by using the mean-field approximation and the Schwinger proper time method in a toroidal topology with periodic or antiperiodic conditions, we evaluate the chiral phase transition, the constituent quark mass and the thermal and spatial susceptibilities under the change of the size, temperature and strength of external magnetic field. To take into account the inverse magnetic catalysis phenomenon, we make use of a recently proposed magnetized coupling constant. The findings suggest that the observables are strongly affected by the variation of the variables and also by the periodicity of the boundary conditions, with the final outcomes depending on the balance of these competing phenomena. |
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Address |
[Abreu, Luciano M.; Nery, Elenilson S.] Univ Fed Bahia, Inst Fis, BR-40170115 Salvador, BA, Brazil, Email: luciano.abreu@ufba.br; |
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Springer |
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English |
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ISSN |
1434-6001 |
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Notes |
WOS:001029139600001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5581 |
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Permanent link to this record |
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Author |
Bueno Rogerio, R.J.; Lima, R.D.; Duarte, L.; Hoff da Silva, J.M.; Dias, M.; Senise, C.R. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Mass-dimension-one fermions and their gravitational interaction |
Type |
Journal Article |
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Year |
2019 |
Publication |
Europhysics Letters |
Abbreviated Journal |
EPL |
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Volume |
128 |
Issue |
2 |
Pages |
20004 - 6pp |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We investigate in detail the interaction between the spin-(1/2) field endowed with mass dimension one and the graviton. We obtain an interaction vertex that combines the characteristics of scalar-graviton and Dirac's fermion-graviton vertices, due to the scalar-dynamic attribute and the fermionic structure of the mass-dimension-one field. It is shown that this vertex obeys the Ward-Takahashi identity, ensuring the gauge invariance for the interaction. In the contribution of the mass-dimension-one fermion to the graviton propagator at one-loop level, we found the conditions for the cancellation of the tadpole term by a cosmological counterterm. We calculate the scattering process for arbitrary momentum. For low energies, the result reveals that only the scalar sector present in the vertex contributes to the gravitational potential. Finally, we evaluate the non-relativistic limit of the gravitational interaction and obtain an attractive Newtonian potential, as required for a dark-matter candidate. |
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Address |
[Bueno Rogerio, R. J.] Univ Fed Itajuba UNIFEI, IFQ, Ave BPS 1303, BR-37500903 Itajuba, MG, Brazil |
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Iop Publishing Ltd |
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English |
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ISSN |
0295-5075 |
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Notes |
WOS:000518763000003 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
4317 |
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Permanent link to this record |
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Author |
Fernandez-Martinez, E.; Lopez-Pavon, J.; Ota, T.; Rosauro-Alcaraz, S. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
nu electroweak baryogenesis |
Type |
Journal Article |
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Year |
2020 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
10 |
Issue |
10 |
Pages |
063 - 28pp |
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Keywords |
Beyond Standard Model; Cosmology of Theories beyond the SM; CP viola- tion; Neutrino Physics |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We investigate if the CP violation necessary for successful electroweak baryo- genesis may be sourced by the neutrino Yukawa couplings. In particular, we consider an electroweak scale Seesaw realization with sizable Yukawas where the new neutrino singlets form (pseudo)-Dirac pairs, as in the linear or inverse Seesaw variants. We find that the baryon asymmetry obtained strongly depends on how the neutrino masses vary within the bubble walls. Moreover, we also find that flavour effects critically impact the final asymmetry obtained and that, taking them into account, the observed value may be obtained in some regions of the parameter space. This source of CP violation naturally avoids the strong constraints from electric dipole moments and links the origin of the baryon asymmetry of the Universe with the mechanism underlying neutrino masses. Interestingly, the mixing of the active and heavy neutrinos needs to be sizable and could be probed at the LHC or future collider experiments. |
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Address |
[Fernandez-Martinez, E.; Ota, T.; Rosauro-Alcaraz, S.] Univ Autonoma Madrid, Dept Fis Teor, IFT UAM CSIC, Madrid 28049, Spain, Email: enrique.fernandez-martinez@uam.es; |
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Springer |
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English |
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1029-8479 |
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Notes |
WOS:000582727900001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
4582 |
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Permanent link to this record |
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Author |
Servant, G.; Simakachorn, P. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Ultrahigh frequency primordial gravitational waves beyond the kHz: The case of cosmic strings |
Type |
Journal Article |
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Year |
2024 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
109 |
Issue |
10 |
Pages |
103538 - 24pp |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We investigate gravitational -wave backgrounds (GWBs) of primordial origin that would manifest only at ultrahigh frequencies, from kilohertz to 100 gigahertz, and leave no signal at LIGO, the Einstein Telescope, the Cosmic Explorer, LISA, or pulsar -timing arrays. We focus on GWBs produced by cosmic strings and make predictions for the GW spectra scanning over high-energy scale (beyond 10 10 GeV) particle physics parameters. Signals from local string networks can easily be as large as the big bang nucleosynthesis/ cosmic microwave background bounds, with a characteristic strain as high as 10 – 26 in the 10 kHz band, offering prospects to probe grand unification physics in the 10 14 -10 17 GeV energy range. In comparison, GWB from axionic strings is suppressed (with maximal characteristic strain similar to 10 – 31 ) due to the early matter era induced by the associated heavy axions. We estimate the needed reach of hypothetical futuristic GW detectors to probe such GWB and, therefore, the corresponding high-energy physics processes. Beyond the information of the symmetry -breaking scale, the high -frequency spectrum encodes the microscopic structure of the strings through the position of the UV cutoffs associated with cusps and kinks, as well as potential information about friction forces on the string. The IR slope, on the other hand, reflects the physics responsible for the decay of the string network. We discuss possible strategies for reconstructing the scalar potential, particularly the scalar self -coupling, from the measurement of the UV cutoff of the GW spectrum. |
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Address |
[Servant, Geraldine] Deutsch Elektronen Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany, Email: peera.simakachorn@ific.uv.es; |
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Amer Physical Soc |
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English |
Summary Language |
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Edition |
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ISSN |
2470-0010 |
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Notes |
WOS:001238459100006 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6150 |
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Permanent link to this record |
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Author |
Yang, W.Q.; Di Valentino, E.; Mena, O.; Pan, S. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Dynamical dark sectors and neutrino masses and abundances |
Type |
Journal Article |
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Year |
2020 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
102 |
Issue |
2 |
Pages |
023535 - 17pp |
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Keywords |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We investigate generalized interacting dark matter-dark energy scenarios with a time-dependent coupling parameter, allowing also for freedom in the neutrino sector. The models are tested in the phantom and quintessence regimes, characterized by equations of state, w(x) < -1 and w(x) > -1, respectively. Our analyses show that for some of the scenarios, the existing tensions on the Hubble constant H-0 and on the clustering parameter S-8 can be significantly alleviated. The relief is either due to (a) a dark energy component which lies within the phantom region or (b) the presence of a dynamical coupling in quintessence scenarios. The inclusion of massive neutrinos into the interaction schemes does not affect either the constraints on the cosmological parameters or the bounds on the total number or relativistic degrees of freedom N-eff, which are found to be extremely robust and, in general, strongly consistent with the canonical prediction N-eff = 3.045. The most stringent bound on the total neutrino mass M-nu is M-nu, < 0.116 eV and it is obtained within a quintessence scenario in which the matter mass-energy density is only mildly affected by the presence of a dynamical dark sector coupling. |
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Address |
[Yang, Weiqiang] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China, Email: d11102004@163.com; |
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Publisher |
Amer Physical Soc |
Place of Publication |
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Editor |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1550-7998 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:000550997900008 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
4472 |
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Permanent link to this record |