
Rubio, B. et al, Orrigo, S. E. A., MontanerPiza, A., Agramunt, J., Algora, A., & Molina, F. (2014). Beta Decay Study of the Tz =2 Zn56 Nucleus and the Determination of the HalfLives of a Few fpshell Nuclei. Nucl. Data Sheets, 120, 37–40.
Abstract: This paper concerns the experimental study of the beta decay properties of few protonrich fpshell nuclei. The nuclei were produced at GANIL in fragmentation reactions, separated with the LISE spectrometer and stopped in an implantation detector surrounded by Ge detectors. The betadelayed gammas, betadelayed protons and the exotic betadelayed gammaproton emission have been studied. Preliminary results are presented. The decay of the Tz = 2 nucleus Zn56 has been studied in detail. Information from the betadelayed protons and betadelayed gammas has been used to deduce the decay scheme. The exotic betadelayed gammaproton decay has been observed for the first time in the fpshell. The interpretation of the data was made possible thanks to the detailed knowledge of the mirror Charge Exchange (CE) process and the gamma deexcitation of the states in Co56, the mirror nucleus of Cu56.



CaballeroFolch, R. et al, DomingoPardo, C., Tain, J. L., Agramunt, J., Algora, A., & Rubio, B. (2014). betadecay and betadelayed Neutron Emission Measurements at GSIFRS Beyond N=126, for rprocess Nucleosynthesis. Nucl. Data Sheets, 120, 81–83.
Abstract: New measurements of very exotic nuclei in the neutronrich region beyond N=126 have been performed at the GSI facility with the fragment separator (FRS). The aim of the experiment is to determine halflives and betadelayed neutron emission branching ratios of isotopes of Hg, Tl and Pb in this region. This contribution summarizes final counting statistics for identification and for implantation, as well as the present status of the data analysis of the halflives. In summary, isotopes of Pt, Au, Hg, Ti, Pb, Bi, Po, At, Rn and Fr were clearly identified and several of them (Hg208211, Tl211215, Pb214218) were implanted with enough statistics to determine their halflives. About half of them are expected to be neutron emitters, in such cases it will become possible to obtain the neutron emission probabilities, Pn.



Morales, A. I. et al, Gadea, A., & Algora, A. (2014). betadecay studies of neutronrich Tl, Pb, and Bi isotopes. Phys. Rev. C, 89(1), 014324–13pp.
Abstract: The fragmentation of relativistic uranium projectiles has been exploited at the Gesellschaft fur Schwerionenforschung laboratory to investigate the beta decay of neutronrich nuclei just beyond Pb208. This paper reports on betadelayed gamma decays of Tl211213, Pb215, and Bi215219 deexciting states in the daughters Pb211213, Bi215, and Po215219. The resulting partial level schemes, proposed with the help of systematics and shellmodel calculations, are presented. The role of allowed GamowTeller and firstforbidden beta transitions in this mass region is discussed.



Bazeia, D., Losano, L., Olmo, G. J., & RubieraGarcia, D. (2014). Black holes in fivedimensional Palatini f(R) gravity and implications for the AdS/CFT correspondence. Phys. Rev. D, 90(4), 044011–8pp.
Abstract: We show that theories having secondorder field equations in the context of higherdimensional modified gravity are not restricted to the family of Lovelock Lagrangians, but can also be obtained if no a priori assumption on the relation between the metric and affine structures of spacetime is made (the Palatini approach). We illustrate this fact by considering the case of Palatini f(R) gravities in five dimensions. Our results provide an alternative avenue to explore new domains of the AdS/CFT correspondence without resorting to ad hoc quasitopological constructions.



Altheimer, A. et al, Fassi, F., Gonzalez de la Hoz, S., Kaci, M., Oliver Garcia, E., Rodrigo, G., et al. (2014). Boosted objects and jet substructure at the LHC. Eur. Phys. J. C, 74(3), 2792–24pp.
Abstract: This report of the BOOST2012 workshop presents the results of four working groups that studied key aspects of jet substructure. We discuss the potential of firstprinciple QCD calculations to yield a precise description of the substructure of jets and study the accuracy of stateoftheart Monte Carlo tools. Limitations of the experiments' ability to resolve substructure are evaluated, with a focus on the impact of additional (pileup) proton proton collisions on jet substructure performance in future LHC operating scenarios. A final section summarizes the lessons learnt from jet substructure analyses in searches for new physics in the production of boosted top quarks.



Makarenko, A. N., Odintsov, S., & Olmo, G. J. (2014). BornInfeld f(R) gravity. Phys. Rev. D, 90(2), 024066–15pp.
Abstract: Motivated by the properties of matter quantum fields in curved spacetimes, we work out a gravity theory that combines the BornInfeld gravity Lagrangian with an f(R) piece. To avoid ghostlike instabilities, the theory is formulated within the Palatini approach. This construction provides more freedom to address a number of important questions, such as the dynamics of the early Universe and the cosmic accelerated expansion, among others. In particular, we consider the effect that adding an f(R) = aR(2) term has on the earlytime cosmology. We find that bouncing solutions are robust against these modifications of the Lagrangian whereas the solutions with loitering behavior of the original BornInfeld theory are very sensitive to the R2 term. In fact, these solutions are modified in such a way that a plateau in the H2 function may arise, yielding a period of (approximately) de Sitter inflationary expansion. This inflationary behavior may be found even in a radiationdominated universe.



Odintsov, S. D., Olmo, G. J., & RubieraGarcia, D. (2014). BornInfeld gravity and its functional extensions. Phys. Rev. D, 90(4), 044003–8pp.
Abstract: We investigate the dynamics of a family of functional extensions of the (Eddingtoninspired) BornInfeld gravity theory, constructed with the inverse of the metric and the Ricci tensor. We provide a generic formal solution for the connection and an Einsteinlike representation for the metric field equations of this family of theories. For particular cases we consider applications to the earlytime cosmology and find that nonsingular universes with a cosmic bounce are very generic and robust solutions.



BABAR Collaboration(Lees, J. P. et al), MartinezVidal, F., Oyanguren, A., & VillanuevaPerez, P. (2014). Bottomonium spectroscopy and radiative transitions involving the chi(bJ)(1P, 2P) states at BABAR. Phys. Rev. D, 90(11), 112010–20pp.
Abstract: We use (121 +/ 1) million Upsilon(3S) and (98 +/ 1) million Upsilon(2S) mesons recorded by the BABAR detector at the PEPII e(+)e() collider at SLAC to perform a study of radiative transitions involving the chi(bJ)(1P, 2P) states in exclusive decays with mu(+)mu()gamma gamma final states. We reconstruct twelve channels in four cascades using two complementary methods. In the first we identify both signal photon candidates in the electromagnetic calorimeter (EMC), employ a calorimeter timingbased technique to reduce backgrounds, and determine branchingratio products and fine mass splittings. These results include the best observational significance yet for the chi(b0)(2P) > gamma Upsilon(2S) and chi(b0)(1P) > gamma Upsilon(1S) transitions. In the second method, we identify one photon candidate in the EMC and one which has converted into an e(+)e() pair due to interaction with detector material, and we measure absolute product branching fractions. This method is particularly useful for measuring Upsilon(3S) > gamma chi(b1,2)(1P) decays. Additionally, we provide the most uptodate derived branching fractions, matrix elements and mass splittings for chi(b) transitions in the bottomonium system. Using a new technique, we also measure the two lowestorder spindependent coefficients in the nonrelativistic QCD Hamiltonian.



Li, X. Q., Lu, J., & Pich, A. (2014). Bs,d(0) > l(+)l() decays in the aligned twoHiggsdoublet model. J. High Energy Phys., 06(6), 022–39pp.
Abstract: The rare decays Bs,d(0) > l(+)l() are analyzed within the general framework of the aligned twoHiggs doublet model. We present a complete oneloop calculation of the relevant shortdistance Wilson coefficients, giving a detailed technical summary of our results and comparing them with previous calculations performed in particular limits or approximations. We investigate the impact of various model parameters on the branching ratios and study the phenomenological constraints imposed by present data.



Ghazi Moradi, F. et al, & Huyuk, T. (2014). Character of particlehole excitations in Ru94 deduced from gammaray angular correlation and linear polarization measurements. Phys. Rev. C, 89(1), 014301–9pp.
Abstract: Linear polarization and angular correlations of gammarays depopulating excited states in the neutrondeficient nucleus Ru94(44)50 have been measured, enabling firm spinparity assignments for several excited states in this nucleus. The deduced multipolarities of strong transitions in the yrast structure were found to be mostly of stretched M1, E1, and E2 types and, in most cases, in agreement with previous tentative assignments. The deduced multipolarity of the 1869 keV and the connecting 257 and 1641 keV transitions indicates that the state at 6358 keV excitation energy has spin parity 12(1)() rather than 12(3)(+) as proposed in previous works. The presence of a 12(1)() state is interpreted within the framework of largescale shellmodel calculations as a pure protonhole state dominated by the pi(p(1/2)(1)circle times g(9/2)(5)) and pi(p(3/2)(1) g(9/2)(5)) configurations. A new positiveparity state is observed at 6103 keV and is tentatively assigned as 12(2)(+). The 14(1)() state proposed earlier is reassigned as 13(4)() and is interpreted as being dominated by neutron particlehole core excitations. The strengths of several E1 transitions have been measured and are found to provide a signature of coreexcited configurations.

