6,332 research outputs found
The Neutralino Mass: Correlation With The Charginos
As the fundamental SU(2) supersymmetric parameters can be determined in the
chargino sector, and the remaining fundamental parameters of the minimal
supersymmetric extensions of the standard model can be analyzed in the
neutralino sector, the two sectors can be correlated via these parameters. We
have shown that for the CP conserving case, the masses of all the neutralinos
can be determined in terms of the chargino masses, and . In this
case the neutralino masses are quite insensitive to the variations of
; they change by about when varies in the range
from 5 to 50. In the CP violating case, the neutralino masses are found to be
quite sensitive to the variations of the CP violating phase. For the heavier
neutralinos the dependence of the masses to the CP violating phase show
complementary behaviour at CP violating points.Comment: 14 pages, 16 figure
airline revenue management
With the increasing interest in decision support systems and the continuous advance of computer science, revenue management is a discipline which has received a great deal of interest in recent years. Although revenue management has seen many new applications throughout the years, the main focus of research continues to be the airline industry. Ever since Littlewood (1972) first proposed a solution method for the airline revenue management problem, a variety of solution methods have been introduced. In this paper we will give an overview of the solution methods presented throughout the literature.revenue management;seat inventory control;OR techniques;mathematical programming
e^+e^-\to (h A)\to bbbb in Abelian Extended Supersymmetric Standard Model
We discuss the cross section in an Abelian
extended SM. We work in that minimum of the scalar potential for which Higgs
trilier coupling is greater than the soft mass parameters. We find that
nex-to-lightest Higgs gives the essential contribution to the cross section in
the small mixing angle and leptophobic limit.Comment: 13 pages, 1 postscript figur
One-Loop Effects in Supergravity Models with an Additional U(1)
For an Abelian extended Supergravity model, we investigate some important low
energy parameters: \tan\beta, Z-Z' mixing angle, lightest CP-even Higgs mass
bound, Z' mass, and effective \mu parameter. By integrating the RGE's from
string scale down to the weak scale we constuct the scalar potential, and
analyze the quantities above at the tree- and one-loop levels by including the
contributions of top squarks and top quark in the effective potential. PACS:
04.65.+e, 12.60.JvComment: 16 pages, 6 postscript figure
Deterministic Transformations of Multipartite Entangled States with Tensor Rank 2
Transformations involving only local operations assisted with classical
communication are investigated for multipartite entangled pure states having
tensor rank 2. All necessary and sufficient conditions for the possibility of
deterministically converting truly multipartite, rank-2 states into each other
are given. Furthermore, a chain of local operations that successfully achieves
the transformation has been identified for all allowed transformations. The
identified chains have two nice features: (1) each party needs to carry out at
most one local operation and (2) all of these local operations are also
deterministic transformations by themselves. Finally, it is found that there
are disjoint classes of states, all of which can be identified by a single real
parameter, which remain invariant under deterministic transformations.Comment: 27 pages, 1 figure; added new references and improved the
presentatio
The Chinese New Middle Class and Green NGOs in South China: Vanguards of Guanxi (Connections)-Seeking, Laggards in Promoting Social Causes?
By examining the emerging Chinese new middle class as well as green non-governmental organisations, this study finds that while the emergence of the Chinese new middle class facilitates the growth of green NGOs, the Chinese new class is not activists or agitators working against the government. Based on in-depth interviews with leaders of green NGOs founded by the Chinese new middle class in Guangdong province, this research examines why green NGOs do not call for or advocate environmental protection It concludes that contrary to conventional wisdom, the Chinese new middle class is a vanguard of guanxi (connections)-seeking, but a laggard in promoting environmental protection and civil-society activism. Green NGOs are principally used as a tool to cultivate social capital in the form of guanxi in order to promote personal material interests
Large mass expansion in two-loop QCD corrections of para-charmonium decay
We calculate the two-loop QCD corrections to paracharmonium decays and involving light-by-light
scattering diagrams with light quark loops. Artificial large mass expansion and
convergence improvement techniques are used to evaluate these corrections. The
obtained corrections to the decays and
account for and of the leading
order contribution, respectively.Comment: 24 pages, 10 figures; REVTeX version; Version to appear in Phys. Rev.
D, 9 pages, 4 figure
Q-ball formation in the MSSM with explicit CP violation
Q-balls generically exist in the supersymmetric extensions of the standard
model. Taking into account the additional sources of CP violation, which are
naturally accomodated by the supersymmetric models, it is shown that the Q-ball
matter depends additively on individual CP phases, whereas mass per unit charge
in the Q-ball depends only on the relative phases. There are regions of the
parameter space where there is no stable Q-ball solution in the CP-conserving
limit whereas finite CP phases induce a stable Q-ball.Comment: 6 p
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