22 research outputs found
Erratum to: Di-boson signatures as standard candles for partial compositeness (Journal of High Energy Physics, (2017), 2017, 1, (94), 10.1007/JHEP01(2017)094)
No full text© 2017, The Author(s). The sign of C t in appendix C, eqs. (C.1), (C.7), (C.8) needs to be reversed
Yukawa sector of multi-Higgs-doublet models in the presence of Abelian symmetries
No full textA general method for classifying the possible quark models of a multi-Higgs-doublet model, in the presence of Abelian symmetries, is presented. All the possible sets of textures that can be present in a given sector are shown, thus turning the determination of the flavor models into a combinatorial problem. Several symmetry implementations are studied for two and three Higgs doublet models. Some models' implementations are explored in great detail, with a particular emphasis on models known as Branco-Grimus-Lavoura and nearest-neighbor-interaction. Several considerations on the flavor changing neutral currents of multi-Higgs models are also given.I am very grateful to Joao P. Silva for invaluable discussions and careful revision of the manuscript. This work is funded by the European FEDER, Spanish MINECO, under Grant No. FPA2011-23596.Peer reviewe
Di-boson signatures as Standard Candles for Partial Compositeness
No full text75 pages, 16 figuresInternational audienceComposite Higgs Models are often constructed including fermionic top partners with a mass around the TeV scale, with the top partners playing the role of stabilizing the Higgs potential and enforcing partial compositeness for the top quark. A class of models of this kind can be formulated in terms of fermionic strongly coupled gauge theories. A common feature they all share is the presence of specific additional scalar resonances, namely two neutral singlets and a colored octet, described by a simple effective Lagrangian. We study the phenomenology of these scalars, both in a model independent and model dependent way, including the bounds from all the available searches in the relevant channels with di-boson and di-top final states. We develop a generic framework which can be used to constrain any model containing pseudo-scalar singlets or octets. Using it, we find that such signatures provide strong bounds on the compositeness scale complementary to the traditional EWPT and Higgs couplings deviations. In many cases a relatively light scalar can be on the verge of discovery as a first sign of new physics
Anomaly-free 2HDMs with a gauged Abelian symmetry and two generations of right-handed neutrinos
No full textEXERCÍCIO DE ANÁLISE ARQUITETÔNICA/BAKHTINIANA: CONTEÚDO DA MÚSICA NA EDUCAÇÃO
No full textExercise of architectural analysis in a musical work of art. The values/choices of the content formally arranged in relation to the value centers are taken into account, facing the demands of the material in the arc of culture in perspective of language and education. Human values can be recognized in listening (musical thinking, abductive-inductive) and named verbally (verbal thinking, inductive-deductive), thanks to language capacity or the play of musement when dealing with signs and languages. The great discursive challenge (ethical, aesthetic and cognitive), is that in music, musical signs (more iconic) do not define or conceptualize the values of their heroes as verbal signs do (more symbolic). I justify the narrative research methodology to think the musical discourse the verbal discourse related to it; narrating and musicing are symbolic-verbal and iconic-musical reasoning-expressions that become experiences/knowledge. However, in musical language (taking instrumental music) whose art is conceptually free, the heroes are the sound movements in time and space of the linear-horizontal and the simultaneous-vertical acoustic-rhythmic-harmonic tensions and attractions perceived in the extra-aesthetic material as emotions-volitions of the life aesthetically shaped by the author-creator who is also author-contemplator. This whole track provides models or cultures that emphasize what society considers valuable in music according to the values and knowledge impregnated in the historical-cultural worldview. I consider that this analysis about the contents of music contributes with the discourses, its forms, its values/contents in the verbal material that can instigate musical listening, besides a good discussion for teaching and valuing (the role) of music in school.
Exercício de análise arquitetônica em uma obra de arte musical. São levados em conta os valores/as escolhas do conteúdo dispostos formalmente em relação aos centros de valor, enfrentando as exigências do material no arco da cultura em perspectiva da linguagem e da educação. Valores humanos podem ser reconhecidos na escuta (pensamento musical, abdutivo-indutivo) e nomeados verbalmente (pensamento verbal, indutivo-dedutivo), graças à capacidade de linguagem ou jogo de fantasiar ao lidar com signos e linguagens. O desafio discursivo – ético, cognitivo e estético – é que na música seus signos (mais icônicos) não definem ou conceituam os valores de seus heróis como os signos verbais (mais simbólicos). Justifico a metodologia narrativa de pesquisa para pensar o discurso musical com o discurso verbal a ele relacionado; narrar e musicar são raciocínios-expressões simbólico-verbais e icônico-musicais que se tornam vivências/conhecimentos. Porém, na linguagem musical (tomando música instrumental) cuja arte é livre conceitualmente, os heróis são os movimentos sonoros no tempo e espaço de tensões e atrações acústico-rítmico-harmônicas lineares-horizontais e simultâneas-verticais percebidas no material extra-estético como emoções-volições da vida enformada esteticamente pelo autor-criador que também é autor-contemplador. Toda esta trilha fornece modelos ou culturas que enfatizam o que a sociedade considera valor em música conforme os valores e conhecimentos impregnados na visão de mundo histórico-culturalmente. Considero que esta análise acerca dos conteúdos da música contribui com os discursos, suas formas, seus valores/conteúdos no material verbal que pode instigar a escuta musical, além de uma boa discussão para o ensino e valorização (do papel) da música na escola
"Had She Plotted It All?": Mimetic representation and fictionalisation of Sylvia Plath in her work and in David Aceituno's "Sylvia & Ted"
No full textMàster Oficial en Construcció i Representació d'Identitats Culturals (CRIC), Facultat de Filologia, Universitat de Barcelona, Any: 2012-2013, Director: Dra. Cristina Alsina RísquezSylvia Plath's poetry, after her suicide in 1963, has become as significantly notorious as her life and her failed marriage to the Poet Laureate Ted Hughes. Concerning her compositions, Plath had always been aware of the use she made of her life in her search for inspiration. In this sense, not only her poems but also full writings compilations –journals, letters and short stories– have been considered by biographers and critics as reliable information suppliers. In this regard, this MA thesis aims to state Plath's consciousness in the creation of her role as a character in her own fiction, with a focus on her inclination to take to the limits her own daily and vital experiences in order to creatively benefit from them. By the same token, this study intends to explore Plath's reasons to commit suicide by considering it a logical consequence of her work: it argues Plath's creation of her own character and its development in her artistic world, up to the point of being the reason of her last sufferings and ultimate death. Thus, it provides with significant examples of Plath's literary legacy in order to demonstrate this thesis through the analysis of her life and words. In addition to this, this work also traces how the author herself is not entirely the owner of her image as a character, but a potential character in other author's work –novelists, biographers, etc. This study goes further by claiming that the words and actions, in this particular case, do not belong to Plath any longer, but to fiction, where her legacy is as notorious as it was with the intention of reaching posterity in the constitution of her character. Lastly, these biofictions inspired by Plath's life and work are situated at the same level of reliability as biographies about the authoress are, concluding how the biographic genre has in this particular case the same component of fiction as biofictions do
Flavoured CP asymmetries for type II seesaw leptogenesis
No full textA novel contribution to the leptonic CP asymmetries in type II seesaw leptogenesis scenarios is obtained for the cases in which flavor effects are relevant for the dynamics of leptogenesis. In the so-called flavored leptogenesis regime, the interference between the tree-level amplitude of the scalar triplet decaying into two leptons and the one-loop wave function correction with leptons in the loop, leads to a new nonvanishing CP asymmetry contribution. The latter conserves total lepton number but violates lepton flavor. Cases in which this novel contribution may be dominant in the generation of the baryon asymmetry are briefly discussed.This work was supported by Portuguese national funds through FCT - Funda ̧cao para a Ciencia e Tecnologia, through the project PEst-OE/FIS/UI
0777/2011 and the project CERN/FP/116328/2010. The work of H.S. was funded by the European FEDER, Spanish MINECO, under the grant FPA2011-23596.Peer reviewe
Models with three Higgs doublets in the triplet representations of A(4) or S-4
No full textWe consider the quark sector of theories containing three scalar SU(2)(L) doublets in the triplet representation of A(4) (or S-4) and three generations of quarks in arbitrary A(4) (or S-4) representations. We show that for all possible choices of quark field representations and for all possible alignments of the Higgs vacuum expectation values that can constitute global minima of the scalar potential, it is not possible to obtain simultaneously nonvanishing quark masses and a nonvanishing CP-violating phase in the Cabibbo-Kobayashi-Maskawa quark mixing matrix. As a result, in this minimal form, models with three scalar fields in the triplet representation of A(4) or S-4 cannot be extended to the quark sector in a way consistent with experiment.The work of R. G. F. and J. P. S. was partially supported by Portuguese national funds through FCT-Fundacao para a Ciencia e a Tecnologia, under the Projects No. PEst-OE/FIS/UI0777/2011 and No. CERN/FP/116328/2010, and by the EU RTN Project Marie Curie PITN-GA-2009-237920. The work of H. S. is funded by the European FEDER, Spanish MINECO, under the Grant No. FPA2011-23596.Peer reviewe
Beyond the Standard Model Physics at the HL-LHC and HE-LHC
No full textThis is the third out of five chapters of the final report [1] of the Workshop on Physics at HL-LHC, and perspectives on HE-LHC [2]. It is devoted to the study of the potential, in the search for Beyond the Standard Model (BSM) physics, of the High Luminosity (HL) phase of the LHC, defined as 3\ua0ab−1 of data taken at a centre-of-mass energy of 14\ua0TeV, and of a possible future upgrade, the High Energy (HE) LHC, defined as 15\ua0ab−1 of data at a centre-of-mass energy of 27\ua0TeV. We consider a large variety of new physics models, both in a simplified model fashion and in a more model-dependent one. A long list of contributions from the theory and experimental (ATLAS, CMS, LHCb) communities have been collected and merged together to give a complete, wide, and consistent view of future prospects for BSM physics at the considered colliders. On top of the usual standard candles, such as supersymmetric simplified models and resonances, considered for the evaluation of future collider potentials, this report contains results on dark matter and dark sectors, long lived particles, leptoquarks, sterile neutrinos, axion-like particles, heavy scalars, vector-like quarks, and more. Particular attention is placed, especially in the study of the HL-LHC prospects, to the detector upgrades, the assessment of the future systematic uncertainties, and new experimental techniques. The general conclusion is that the HL-LHC, on top of allowing to extend the present LHC mass and coupling reach by 20−50% on most new physics scenarios, will also be able to constrain, and potentially discover, new physics that is presently unconstrained. Moreover, compared to the HL-LHC, the reach in most observables will generally more than double at the HE-LHC, which may represent a good candidate future facility for a final test of TeV-scale new physics
