Download or read book Heavy Quark Production by Neutrinos and Antineutrinos Quark parton Model SU 2 X SU 2 X U 1 Gauge Group 200 GeV written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The rate for producing t- and b-quarks in, respectively, neutrino and antineutrino interactions with nucleons are estimated. Experimental quark parton distribution functions, SU(2) x SU(2) x U(1) gauge group mixing angles, and threshold suppression through rescaling are used in the calculation. The ratios to total cross sections of b-quark production by anti nu, R/sub b//sup anti nu/, and t-quark production by .nu., R/sub t//sup nu/, are, respectively, R/sub b//sup anti nu/ approximately equal to 10−4 and R/sub t//sup nu/ approximately equal to 10−5 for an incident energy of 200 GeV. 13 references.

Download or read book Government Reports Annual Index written by and published by . This book was released on 1980 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Services for Family Planning and Infertility United States 1982 written by Gerry E. Hendershot and published by . This book was released on 1988 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1982 statistics on the use of family planning and infertility services presented in this report are preliminary results from Cycle III of the National Survey of Family Growth (NSFG), conducted by the National Center for Health Statistics. Data were collected through personal interviews with a multistage area probability sample of 7969 women aged 15-44. A detailed series of questions was asked to obtain relatively complete estimates of the extent and type of family planning services received. Statistics on family planning services are limited to women who were able to conceive 3 years before the interview date. Overall, 79% of currently mrried nonsterile women reported using some type of family planning service during the previous 3 years. There were no statistically significant differences between white (79%), black (75%) or Hispanic (77%) wives, or between the 2 income groups. The 1982 survey questions were more comprehensive than those of earlier cycles of the survey. The annual rate of visits for family planning services in 1982 was 1077 visits /1000 women. Teenagers had the highest annual visit rate (1581/1000) of any age group for all sources of family planning services combined. Visit rates declined sharply with age from 1447 at ages 15-24 to 479 at ages 35-44. Similar declines with age also were found in the visit rates for white and black women separately. Nevertheless, the annual visit rate for black women (1334/1000) was significantly higher than that for white women (1033). The highest overall visit rate was for black women 15-19 years of age (1867/1000). Nearly 2/3 of all family planning visits were to private medical sources. Teenagers of all races had higher family planning service visit rates to clinics than to private medical sources, as did black women age 15-24. White women age 20 and older had higher visit rates to private medical services than to clinics. Never married women had higher visit rates to clinics than currently or formerly married women. Data were also collected in 1982 on use of medical services for infertility by women who had difficulty in conceiving or carrying a pregnancy to term. About 1 million ever married women had 1 or more infertility visits in the 12 months before the interview. During the 3 years before interview, about 1.9 million women had infertility visits. For all ever married women, as well as for white and black women separately, infertility services were more likely to be secured from private medical sources than from clinics. The survey design, reliability of the estimates and the terms used are explained in the technical notes.

Download or read book Comparison of Neutrino Data on Average Values of Structure Function and Quark parton Model Parameters 20 to 200 GeV Review written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A brief survey of inelastic neutrino and antineutrino interactions is presented which exhibits the growing internal consistency of the experimental data on structure function and QPM parameters averaged over the energy interval from about 20 to 200 GeV, and is in excellent agreement with expectations based on the QPM. 10 references.

Download or read book Heavy quark production in parton model and in QCD written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book INIS Atomindex written by and published by . This book was released on 1988 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heavy Quark Production in Parton Model and in QCD written by and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quarks and Nuclei written by W. Weise and published by World Scientific. This book was released on 1984 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: http://www.worldscientific.com/worldscibooks/10.1142/0102

Download or read book Heavy Quark Production in Parton Model and in QCD written by Evgenij M. Levin and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quark Model and High Energy Collisions written by V. V. Anisovich and published by World Scientific. This book was released on 1985 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: http://www.worldscientific.com/worldscibooks/10.1142/0111

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1988 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to Quarks and Partons written by F. E. Close and published by . This book was released on 1979 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radiative Neutrino Masses in an SU 2 X U 1 Model written by Walter Grimus and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: We extend the standard model with nL lepton doublets and nH Higgs doublets by adding nR right-handed neutrino singlets with a Yukawa term and a Majorana mass term. Assuming nL > nR there are nL - nR massless Majorana neutrinos at the tree level of which nL-nR-max(0, nL-nHnR) states acquire a mass by neutral Higgs exchange at the one-loop level. With heavy Majorana masses of the neutrino singlets this model combines the seesaw mechanism and radiative mass production to obtain naturally light neutrino masses. The minimal case nL = 3, nR = 1, nH = 2 is examined in detail including a phenomenological discussion.

Download or read book Physics and Astrophysics of Neutrinos written by Masataka Fukugita and published by Springer Science & Business Media. This book was released on 2013-12-14 with total page 947 pages. Available in PDF, EPUB and Kindle. Book excerpt: Observations of neutrinos being emitted by the supernova SN1987A, star neutrinos, and atmospheric neutrinos have provided new insights into astronomy, as well as new unresolved phenomena such as the solar neutrino problem, spurring investigative studies among particle physicists and astrophysicists. One of the most important features of this book is its enumeration of a number of basic properties of neutrinos and their relationship to Grand Unified Theories, focusing on the origin of the neutrino's mass and the generation mixing of neutrinos. All the kamiokande results, detector performances, and complete references are included.

Download or read book Heavy Quarks at Fixed Target written by Istituto nazionale di fisica nucleare. Laboratori nazionali di Frascati and published by . This book was released on 1993 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neutrino Cosmology written by Julien Lesgourgues and published by Cambridge University Press. This book was released on 2013-02-21 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: A self-contained guide to the role played by neutrinos in the Universe and how their properties influence cosmological and astrophysical observations.

Download or read book Introduction to the Quark Model of Elementary Particles Quantum numbers gauge theories and hadron spectroscopy written by Dieter Flamm and published by Gordon & Breach Publishing Group. This book was released on 1982 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Band 1.