13,747 research outputs found
Some Predictions of Diquark Model for Hidden Charm Pentaquark Discovered at the LHCb
The LHCb has discovered two new states with preferred quantum numbers
and from decays. These new states can be
interpreted as hidden charm pentaquarks. It has been argued that the main
features of these pentaquarks can be described by diquark model. The diquark
model predicts that the and are in two separate octet
multiplets of flavor and there is also an additional decuplet
pentaquark multiplet. Finding the states in these multiplets can provide
crucial evidence for this model. The weak decays of b-baryon to a light meson
and a pentaquark can have Cabibbo allowed and suppressed decay channels. We
find that in the limit, for -spin related decay modes the ratio of
the decay rates of Cabibbo suppressed to Cabibbo allowed decay channels is
given by . There are also other testable relations for
b-baryon weak decays into a pentaquark and a light pseudoscalar. These
relations can be used as tests for the diquark model for pentaquark.Comment: revtex, 19 pages, 3 figures. one reference added and some typos
correcte
Search for a heavy dark photon at future colliders
A coupling of a dark photon from a with the standard model
(SM) particles can be generated through kinetic mixing represented by a
parameter . A non-zero also induces a mixing between
and if dark photon mass is not zero. This mixing can be large when
is close to even if the parameter is small. Many
efforts have been made to constrain the parameter for a low dark
photon mass compared with the boson mass . We study the
search for dark photon in for a
dark photon mass as large as kinematically allowed at future
colliders. For large , care should be taken to properly treat possible
large mixing between and . We obtain sensitivities to the parameter
for a wide range of dark photon mass at planed colliders,
such as Circular Electron Positron Collider (CEPC), International Linear
Collider (ILC) and Future Circular Collider (FCC-ee). For the dark photon mass
, the
exclusion limits on the mixing parameter are . The CEPC with and FCC-ee with
are more sensitive than the constraint from current
LHCb measurement once the dark photon mass . For , the sensitivity at
the FCC-ee with and is better
than that at the 13~TeV LHC with , while the sensitivity at
the CEPC with and can be even
better than that at 13~TeV LHC with for
.Comment: 21 pages, 5 figures, 2 table
Women and Media: A Study on the Marginalization of Female Discourse Power
The mass media is the window for reflecting the mass ideology. The article makes a thorough analysis on the marginalization of female discourse power and studies the potential sexual discrimination of this phenomenon, regarding females as the subjects and the objects of the mass media, and then further traces its deep reason upon which many constructive suggestions and improved measures have been proposed. The article aims at awakening the masses to establish the correct sexual ideology in harmony and pursue the equality of discourse power between females and males. Key words: mass media; female discourse power; marginalization; sexual discriminationRésumé: Les médias de masse est la fenêtre pour refléter l'idéologie de la masse. Cet article fait une analyse approfondie sur la marginalisation du pouvoir du discours féminin et étudie la discrimination sexuelle inhérente à ce phénomène tandis que les femmes sont les sujets et les objets des médias de masse. Il explore en outre la raison profonde de ce phénomène sur laquelle des suggestions constructives et des mesures améliorées ont été proposées. L'article vise à l'éveil des masses à fin d'établir une idéologie sexuelle correcte et harmonieuse et de poursuivre l'égalité du pouvoir de discours entre les femmes et les hommes.Mots-Clés: médias de masse; pouvoir du discours féminin; marginalisation; discrimination sexuell
From Evolution of Dialect “Huoguo” to Harmonious Essence of Jing-chu Culture
The purpose of this paper is to study the relationship of language and culture from a typical microscopic perspective of harmonious essence of Jingzhou culture in the evolution of dialect “huoguo” (or: “hodgepodge” ) from which we get the conclusion that language and culture are so highly influenced with each other that the former can not be existed without the latter. Key words: harmonious essence; Jing-chu culture; huoguo; evolution language and culture Résumé: Le but de cet article est d'étudier la relation entre la langue et la culture à partir d’une perspective microscopique typique de l’essence harmonieuse de la culture des royaumes Jing et Chu dans l'évolution du dialecte "huoguo" (ou: «fatras») à partir de laquelle nous avons conclu que la langue et la culture sont si fortement influencés l’une par l’autre que la première ne peut pas exister toute seule sans la dernière. Mots-Clés: essence harmonieuse; la culture des royaumes Jing et Chu; huoguo; évolution de la langue et de la cultur
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