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High-energy Fission around Z=82,78 Measured with an Optical Chamber
/ Caamano, Manuel (University of Santiago de Compostela, 15782 Santiago de Compostela, Spain) ; Fernandez-Dominguez, Beatriz (University of Santiago de Compostela, 15782 Santiago de Compostela, Spain) ; Alvarez-Pol, Hector (University of Santiago de Compostela, 15782 Santiago de Compostela, Spain) ; Cabanelas, Pablo (University of Santiago de Compostela, 15782 Santiago de Compostela, Spain) ; Gonzalez-Diaz, Diego (University of Santiago de Compostela, 15782 Santiago de Compostela, Spain)
CERN-INTC-2017-065 ; INTC-I-193.
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2017.
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Prospects on searches for baryonic Dark Matter produced in $b$-hadron decays at LHCb
/ Rodríguez, Alexandre Brea (Santiago de Compostela U., IGFAE) ; Chobanova, Veronika (Santiago de Compostela U., IGFAE) ; Cid Vidal, Xabier (Santiago de Compostela U., IGFAE) ; Soliño, Saúl López (Santiago de Compostela U., IGFAE) ; Santos, Diego Martínez (Santiago de Compostela U., IGFAE) ; Mombächer, Titus (Santiago de Compostela U., IGFAE) ; Prouvé, Claire (Santiago de Compostela U., IGFAE) ; Fernández, Emilio Xosé Rodríguez (Santiago de Compostela U., IGFAE) ; Vázquez Sierra, Carlos (CERN)
A model that can simultaneously explain Dark Matter relic density and the apparent matter anti-matter imbalance of the universe has been recently proposed. The model requires $b$-hadron branching fractions to Dark Matter at the per mille level. [...]
arXiv:2106.12870.-
2021-11-02 - 8 p.
- Published in : Eur. Phys. J. C 81 (2021) 964
Fulltext: document - PDF; 2106.12870 - PDF; Fulltext from publisher: PDF;
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Large hadronic power corrections or new physics in the rare decay $B \to K^* \mu^+ \mu^-$ ?
/ Chobanova, V.G. (Santiago de Compostela U., IGFAE) ; Hurth, T. (U. Mainz, PRISMA) ; Mahmoudi, F. (Lyon Observ. ; CERN ; IUF, Paris) ; Martinez Santos, D. (Santiago de Compostela U., IGFAE) ; Neshatpour, S. (IPM, Tehran)
The well-known problem of the unknown power corrections within QCD improved factorisation leaves the interpretation of the so-called LHCb anomalies in the angular observables of B-->K* mu+ mu- as an open problem. In order to contribute to the question whether they represent a first sign for new physics beyond the Standard Model or a consequence of underestimated hadronic power corrections, we present a direct comparison of two global fits to the data based on the two different assumptions. [...]
arXiv:1702.02234; CERN-TH-2017-031; IPM-PA-455; MITP-17-007.-
2017-07-06 - 17 p.
- Published in : JHEP 07 (2017) 025
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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A new amplification structure for time projection chambers based on electroluminescence
/ González-Díaz, D. (Santiago de Compostela U., IGFAE) ; Fontaíña, M. (Santiago de Compostela U., IGFAE) ; García Castro, D. (Santiago de Compostela U., IGFAE) ; Mehl, B. (CERN) ; de Oliveira, R. (CERN) ; Williams, S. (CERN) ; Monrabal, F. (Donostia Intl. Phys. Ctr., San Sebastian) ; Querol, M. (Valencia U., IFIC) ; Álvarez, V. (Valencia U., IFIC)
A simple hole-type secondary scintillation structure (2 mm-hole, 5 mm-pitch, 5 mm-thickness) is introduced and its operation demonstrated in pure xenon in the pressure range 2-10 bar. The new device, characteristically translucent, has been manufactured through a collaboration between IGFAE and the CERN workshop, and relies entirely on radiopure materials (acrylic and copper), being extremely rugged in the presence of sparks, mechanically robust, and easily scalable, yet made through a relatively simple process. [...]
arXiv:1907.03292.-
2020-06-12 - 10 p.
- Published in : J. Phys.: Conf. Ser. 1498 (2020) 012019
Fulltext: PDF; Fulltext from publisher: PDF;
In : 6th International Conference on Micro Pattern Gaseous Detectors, La Rochelle, France, 5 - 10 May 2019, pp.012019
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Evidence of a near-threshold resonance in $^{11}$B relevant to the $\beta$-delayed proton emission of $^{11}$Be
/ Ayyad, Y. (Santiago de Compostela U., IGFAE ; Michigan State U., East Lansing (main)) ; Mittig, W. (Michigan State U. ; Michigan State U., East Lansing (main)) ; Tang, T. (Michigan State U., East Lansing (main)) ; Olaizola, B. (CERN) ; Potel, G. (LLNL, Livermore) ; Rijal, N. (Michigan State U., East Lansing (main)) ; Watwood, N. (Michigan State U., East Lansing (main)) ; Alvarez-Pol, H. (Santiago de Compostela U., IGFAE) ; Bazin, D. (Michigan State U. ; Michigan State U., East Lansing (main)) ; Caamaño, M. (Santiago de Compostela U., IGFAE) et al.
A narrow near-threshold proton-emitting resonance (Ex = 11.4 MeV, J$^{\pi}$ = 1/2$^{+}$ and $\Gamma_{p}$ = 4.4 keV) was directly observed in $^{11}$B via proton resonance scattering. This resonance was previously inferred in the $\beta$-delayed proton emission of the neutron halo nucleus $^{11}$Be. [...]
arXiv:2205.04973.-
2022-06-28 - 6 p.
- Published in : Phys. Rev. Lett. 129 (2022) 012501
Fulltext: 2205.04973 - PDF; PhysRevLett.129.012501 - PDF;
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