Large mass splittings between charged and neutral Higgs bosons in the MSSM

We show that large ($> 100$ GeV) mass splittings between the charged Higgs boson ($H^\pm$) and the neutral Higgs bosons ($H^0$ and $A^0$) are possible in the Minimal Supersymmetric Standard Model (MSSM). Such splittings occur when the $\mu$ parameter is considerably larger than the common SUSY scale, $M_{SUSY}$, and have significant consequences for MSSM Higgs searches at future colliders.Comment: 11 pages, LaTex, 5 figures, version to appear in Phys. Lett.

Vector Leptoquark Production at Hadron Colliders

We explore the production of vector leptoquarks ($V$) at the Tevatron, LHC, and SSC through both quark-antiquark and gluon fusion: $q \bar q, gg \to VV$. The cross sections are found to be somewhat larger than for scalar leptoquarks of the same mass implying enhanced search capabilities. Contributed to the Workshop on Physics at Current Accelerators and the Supercollider, Argonne National Lab, June 1993.Comment: 8 pg (including 5 figures, available by request to hewett@anlhep), ANL-HEP-CP-93-52, UH-511-775-93, SCIPP-93/3

Report of the Higgs Working Group of the Tevatron Run 2 SUSY/Higgs Workshop

This report presents the theoretical analysis relevant for Higgs physics at the upgraded Tevatron collider and documents the Higgs Working Group simulations to estimate the discovery reach in Run 2 for the Standard Model and MSSM Higgs bosons. Based on a simple detector simulation, we have determined the integrated luminosity necessary to discover the SM Higgs in the mass range 100-190 GeV. The first phase of the Run 2 Higgs search, with a total integrated luminosity of 2 fb-1 per detector, will provide a 95% CL exclusion sensitivity comparable to that expected at the end of the LEP2 run. With 10 fb-1 per detector, this exclusion will extend up to Higgs masses of 180 GeV, and a tantalizing 3 sigma effect will be visible if the Higgs mass lies below 125 GeV. With 25 fb-1 of integrated luminosity per detector, evidence for SM Higgs production at the 3 sigma level is possible for Higgs masses up to 180 GeV. However, the discovery reach is much less impressive for achieving a 5 sigma Higgs boson signal. Even with 30 fb-1 per detector, only Higgs bosons with masses up to about 130 GeV can be detected with 5 sigma significance. These results can also be re-interpreted in the MSSM framework and yield the required luminosities to discover at least one Higgs boson of the MSSM Higgs sector. With 5-10 fb-1 of data per detector, it will be possible to exclude at 95% CL nearly the entire MSSM Higgs parameter space, whereas 20-30 fb-1 is required to obtain a 5 sigma Higgs discovery over a significant portion of the parameter space. Moreover, in one interesting region of the MSSM parameter space (at large tan(beta)), the associated production of a Higgs boson and a b b-bar pair is significantly enhanced and provides potential for discovering a non-SM-like Higgs boson in Run 2.Comment: 185 pages, 124 figures, 55 table

The effect of various containers on the growth of vegetable plants

The experiments indicate that clay pots are superior, as a general rule, to composition pots, paper bands or flats as a growing medium for vegetable plants. If the plants in these substitute containers, however, are watered, about every week or 10 days with a solution of nitrate of soda, sulfate of ammonia or any other nitrogenous fertilizer at the rate of 1 ounce to 1 gallon of water, plants equal to those produced in clay pots are possible. A few species may do as well without nitrates; cabbage plants grown in peat pots were slightly better than those in clay pots even without nitrates. Wood veneer bands were superior to paper bands except where sodium nitrate solution was applied to the plants in the paper bands. Nitrate applications given too freely and too often may result in producing plants with soft, succulent growth. If plants are sensitive to acid soils, it is well to neutralize the acidity of the peat pots by soaking in lime water for at least 24 hours. Liming is not so essential where nitrates are used. The pulp pots and pulp planting pots are nearly neutral in reaction and do not require liming

Effect of harvesting, spacing and age of plants on yields of asparagus

Although Iowa has never ranked high among the states as a producer of asparagus for market or canning, the asparagus acreage planted, particularly by canners, is increasing. No exact information is available concerning the effect of the cutting season’s length upon yields over a period of years. Market gardeners usually stop cutting asparagus in Iowa between June 1 and June 15. The demand for asparagus at this time decreases and the prices drop too low for profitable harvesting. To prevent damage to future yields, June 15 also appears to be the latest safe harvest date, though no substantiating experimental data have been available. Canners, however, could harvest asparagus later than June 15 profitably if such treatment did not injure the yield and quality of the future harvests

Growing grapes in Iowa

The Concord and grapes of this type and hardiness, which are the most widely grown in Iowa, require yearly pruning if the grower wishes to obtain heavy annual yields of large-sized high-quality fruit. Far too many home vineyards are left unpruned or are incorrectly pruned, with the result that they are unproductive and unsightly. There are many systems used in training the American grape, but the system which seems to be best adapted to Iowa conditions is the single-stem four-cane Kniffin system. The spur method of pruning, which has been employed to a considerable extent with the European grape, is still followed in many sections of Iowa. Unfortunately, this method is unsatisfactory with the Concord grape and, except with grapes trained on arbors, should not be used. The grapevines pruned by the long cane method and trained to the Kniffin system in certain Iowa tests have repeatedly outproduced those pruned by the spur method. The Concord produces the heaviest yield of fruit from approximately the fifth to ninth bud and the lowest yield from the first four buds on the cane. Therefore, it can be seen that with the spur method of pruning, when only the first two buds are left on each cane, the heaviest producing buds are removed. The characteristic bearing habit of the American grape explains why long cane pruning is more productive than the spur cane system

Victory vegetable gardens

The farm garden may easily occupy 1/2 acre and supply enough vegetables for a medium-sized family the year around. The garden on the city lot necessarily will have to be smaller, but by intensive methods of cropping may be made to produce enough fresh vegetables during the growing season for a small-sized family. Farm gardens are often too small for the needs of the family, because the labor required by a larger garden is thought to interfere with farm duties. Using field methods of tillage, the size of the farm garden can be increased with no increase in labor. Many farm gardens should be relocated because continuous cropping without adequate rotation has reduced yields and quality of the vegetables. Soils for vegetable crops should be high in organic matter. The easiest way to secure this is through the application of animal manure or the plowing under of a green manure crop, preferably a legume. A good plan for the farm vegetable garden would be to plant an area in soybeans or other legumes equal to that planted to vegetables. The next year plant the vegetables on that portion of the garden in which the green manure was grown. Select a level site or one with a gentle slope, avoiding steep slopes because small seeds and seedlings easily wash out with heavy rains. North and east exposures are preferable since they do not dry out as readily and are cooler. Protection from winds is always desirable, but of course vegetables will not grow well close to tree rows or in the shade of buildings

Shortening the Rest Period of the Tubers of the Jerusalem Artichoke, Helianthus tuberosus L.

Experiments are reported in which the rest period of dormant tubers of the Jerusalem artichoke was shortened by storage at temperatures near or slightly below freezing. The length of the rest period or dormant stage was directly dependent on storage temperature; the lower the temperature down to slightly below freezing, the shorter the rest period

The Home Vegetable Garden

Vegetables are healthful. Mineral salts present In vegetables are especially Important; iron, calcium and phosphorus are present In sufficient quantities for the body\u27s needs. Vegetables add bulk to the diet and furnish vitamins which are essential to the growth and health of the body. A well planned and or cared for garden will produce enough vegetables to supply the family during the growing season, and enough may be raised In excess for storing for winter use. Beets, carrots, turnips, parsnips, potatoes, late cabbage, etc., can be stored successfully. Fresh vegetables from the home garden are much more palatable than vegetables which have been shipped long distances or displayed for several days in the retail grocery window. The only means or securing the 1best peas, sweet corn, beans and asparagus Is to grow them at home, since they deteriorate rapidly after gathering. Many vegetables lose their characteristic flavor unless used within a few hours after gathering