Probing NMSSM Scenarios with Minimal Fine-Tuning by Searching for Decays of the Upsilon to a Light CP-Odd Higgs Boson

Completely natural electroweak symmetry breaking is easily achieved in supersymmetric models if there is a SM-like Higgs boson, $h$, with m_h\lsim 100\gev. In the minimal supersymmetric model, such an $h$ decays mainly to b\anti b and is ruled out by LEP constraints. However, if the MSSM Higgs sector is expanded so that $h$ decays mainly to still lighter Higgs bosons, e.g. $h\to aa$, with $BR(h\to aa)>0.7$, and if $m_a<2m_b$, then the LEP constraints are satisfied. In this letter, we show that in the next-to-minimal supersymmetric model the above $h$ and $a$ properties (for the lightest CP-even and CP-odd Higgs bosons, respectively) imply a lower bound on BR(\Upsilon\to \gam a) that dedicated runs at present (and future) $B$ factories can explore.Comment: 4 pages, 2 figure

PUBLIC POLICY EDUCATION ON INFLATION

Financial Economics,

POLICY EDUCATION ON NON-TRADITIONAL SUBJECTS: A PROGRAM ON PUBLIC UTILITY REGULATION

Public Economics,

Accurate Mass Determinations in Decay Chains with Missing Energy: II

We discuss kinematic methods for determining the masses of the particles in events at a hadron collider in which a pair of identical particles is produced with each decaying via a series of on-shell intermediate beyond-the-SM (BSM) particles to visible SM particles and an invisible particle (schematically, pp -> ZZ + jets with Z -> Aa -> Bba -> Ccba -> ... -> cba... + N where a,b,c,... are visible SM particles or groups of SM particles, A,B,C,... are on-shell BSM particles and N is invisible). This topology arises in many models including SUSY processes such as squark and gluino pair production and decay. We present the detailed procedure for the case of Z -> 3 visible particles + N and demonstrate that the masses obtained from the kinematic procedure are independent of the model by comparing SUSY to UED.Comment: v2, published version in PR

SWINE PRODUCTION NETWORKS IN MINNESOTA: RESOURCES FOR DECISION MAKING

Swine production networks are becoming a significant part of the Minnesota swine industry, with at least 30 production networks in operation as of late 1995. There are probably at least 450 producers involved, representing at least nine percent of the state s sow inventory. Not counted in these numbers are a few other networks involved only in data-sharing or marketing as well as a large number of farmer-to-farmer custom/contract arrangements. We interviewed 20 producers involved in networks. None of the networks we surveyed had been in operation very long, with most in business no more than a year or two. It is too early to predict what their long-term success will be. Most of the respondents seemed pleased with the arrangements so far. An example financial analysis of a 1,400 sow network is presented in the paper. Pig pricing formulas and custom rates are discussed for sharing risks among the farrower, nursery and finisher members of the network. The staff paper is 34 pages plus a 26 page annotated reading list of other publications on networking and segregated early weaning.Livestock Production/Industries,

Hindeastraea Discoidea White from the Eagle Ford Shale, Dallas County, Texas

In 1888 Charles White made Hindeastraea discoidea the type of a new genus of Cretaceous coral. The type specimen was reported to have been collected from the Ripley (Navarro) formation near Terrell, Kaufman County, Texas. The next year Robert T. Hill reported what he considered to be the same species in the shales at Eagle Ford, Dallas County, Texas. The note was not accompanied by a description, and the corals were referred incorrectly to the genus lsastrea. Although the occurrence of these corals in the Eagle Ford has been known to many collectors other than Hill, there has been no attempt to describe them. The following discussion includes a systematic description of the species, a columnar section showing the stratigraphic position, and speculations concerning the conditions of sedimentation in the upper Eagle Ford

An Annotated Bibliography of North American Upper Cretaceous Corals, 1785-1950

Although more than one hundred species of corals have been described from the Upper Cretaceous formations of North America, there has been no attempt, to date, to compile a bibliographic index of the species. The author feels that such an index would be useful to paleontologists in future identifications. The following bibliography includes a list, with annotations, of all available literature on North American corals of Upper Cretaceous age; a catalogue of genera and species; and a plate showing the distribution of species

Light Neutralino Dark Matter in the NMSSM

Neutralino dark matter is generally assumed to be relatively heavy, with a mass near the electroweak scale. This does not necessarily need to be the case, however. In the Next-to-Minimal Supersymmetric Standard Model (NMSSM) and other supersymmetric models with an extended Higgs sector, a very light CP-odd Higgs boson can naturally arise making it possible for a very light neutralino to annihilate efficiently enough to avoid being overproduced in the early Universe. In this article, we explore the characteristics of a supersymmetric model needed to include a very light neutralino, 100 MeV < \mcnone < 20 GeV, using the NMSSM as a prototype. We discuss the most important constraints from Upsilon decays, $b \to s \gamma$, $B_s \to \mu^+ \mu^-$ and the magnetic moment of the muon, and find that a light bino or singlino neutralino is allowed, and can be generated with the appropriate relic density. It has previously been shown that the positive detection of dark matter claimed by the DAMA collaboration can be reconciled with other direct dark matter experiments such as CDMS II if the dark matter particle is rather light, between about 6 and 9 GeV. A singlino or bino-like neutralino could easily fall within this range of masses within the NMSSM. Additionally, models with sub-GeV neutralinos may be capable of generating the 511 keV gamma-ray emission observed from the galactic bulge by the INTEGRAL/SPI experiment. We also point out measurements which can be performed immediately at CLEO, BaBar and Belle using existing data to discover or significantly constrain this scenario.Comment: References updated, accepted for publication in PR

There\u27s Something Fascinating \u27Bout The Moon

https://digitalcommons.library.umaine.edu/mmb-vp/6708/thumbnail.jp