Near-Threshold Neutral Pion Electroproduction at High Momentum Transfers and Generalized Form Factors

We report the measurement of near-threshold neutral pion electroproduction cross sections and the extraction of the associated structure functions on the proton in the kinematic range Q2 from 2 to 4.5 GeV2 and W from 1.08 to 1.16 GeV. These measurements allow us to access the dominant pion-nucleon s-wave multipoles E0+ and S0+ in the near-threshold region. In the light-cone sum-rule framework (LCSR), these multipoles are related to the generalized form factors Gπ0p1(Q2) and Gπ0p2(Q2). The data are compared to these generalized form factors and the results for Gπ0p1(Q2) are found to be in good agreement with the LCSR predictions, but the level of agreement with Gπ0p2(Q2) is poor

Near-threshold Neutral Pion Electroproduction at High Momentum Transfers and Generalized Form Factors

We report the measurement of near-threshold neutral pion electroproduction cross sections and the extraction of the associated structure functions on the proton in the kinematic range Q2 from 2 to 4.5 GeV2 and W from 1.08 to 1.16 GeV. These measurements allow us to access the dominant pion-nucleon s-wave multipoles E0+ and S0+ in the near-threshold region. In the light-cone sum-rule framework (LCSR), these multipoles are related to the generalized form factors G1π0p (Q2) and G2π0p (Q2). The data are compared to these generalized form factors and the results for G1π0p (Q2) are found to be in good agreement with the LCSR predictions, but the level of agreement with G2π0p (Q2) is poor

Marriage and inheritance in Burmese Buddhist law.

The main purpose of this Thesis is to examine the available evidence on the extent of the influence of Hindu Law in the field of Burmese personal and family law, in so far as the substance is concerned. The principal source of Burmese Law so far as marriage and inheritance is concerned is the customary law of South East Asia. When the British Courts first administered Burmese Law, the tendency, largely owing to the influence of Jardine and Forchammer was to exaggerate the influence of the Indian Law. This was generally resented by Burmese writers, and recently Lingat has suggested that the Hindu influence was limited to the manner of presentation and to isolated texts. It has however been too readily assumed that the Dharmasastras are undeviatingly patriarchal. That this is not the case becomes clear from a study of these texts with which practising Hindu Layers are normally unacquainted and, in this thesis attention has been drawn to Dharmasastra texts and institutions in Ceylon which, it is submitted, at least establish a prima-facie case for part of the substance of the common Law of South East Asia being in part derived from Indian institutions existing before the Brahmanical reaction against Buddhism imposed on the Hindu system the wide spread, rigid, patriachal character which it had when the British first came in contact with it. It also endeavours to set out as clearly as possible, the principles of Burmese Buddhist Law relating to Marriage and Inheritance, as administered by the Courts in Burma since the British annexation. The case law throughout has been brought to date. Chapter I indicates the scope of work, and, chapter II is devoted to the origin of Burmese Buddhist Law, Chapter III sets out the sources of Burmese Buddhist Law, Chapter IV deals with the Dhammathats, Chapter V explains the extent of the application of Burmese Law, Chapter VI deals with Burmese Buddhist Marriages generally. Chapter VII is devoted to consent of parents and guardians in relation to valid marriage. Chapter VIII deals with personal relations of husband and wife. Chapter IX relates to the property of the marriage. Chapter X and XI are devoted to divorce and partition upon divorce respectively. Chapters XII, XIII, XIV, XV, XVI deal with general principles of inheritance, rights of remoter heirs; the orasa, partition, and loss of rights of inheritance. Chapter XVII explains the nature of the estate of the heirs and persons entitled to letters of Administration. The last chapter (XVIII) is a brief summary of the present position of the law as developed by the Courts in Burma

Detection, seedborne nature, disease transmission and eradication of seedborne infection by rhizoctonia bataticola (Taub) butler in groundnut

A study was conducted to determine the seedborne nature, disease transmission and eradication of seedborne infection by Rhizoctonia bataticola in groundnut. In case of 10 groundnut accessions, infection percentage of R. bataticola, ranged between 13.3 to 73.3. Component-plating method indicated that the pathogen is located mainly on the seed coat and rarely in the endosperm and embryo. Infection in embryo and endosperm was always associated with seed coal infection. All accessions showed pre-emergence damping-off in the form of seed rot. Post- emergence damping-off was noticed in three accessions. The per cent infection ranged between 9.5 to 42.9 in case of pre-emergence damping-off. while it was 4.8 to 19.1 for post-emergence damping-off. The latent infection of R. bataticola from healthy seedlings was proved using Potato carrot agar medium. Infected seeds of 10 groundnut accessions were gi~own and no apparent symptoms were observed on the plants for one season, but seeds harvested from such plants resulted in seed infection of 6.1 - 33.3 % indicating the seed transmission nature of the pathogen from one generation to the next. Carbendazim + tin ram @ 2g a.i / kg seed can be used as a routine treatment in quarantine laboratories to eliminate R. bataticola from groundnut seed

Comment on the narrow structure reported by Amaryan et al

The CLAS Collaboration provides a comment on the physics interpretation of the results presented in a paper published by M. Amaryan et al. regarding the possible observation of a narrow structure in the mass spectrum of a photoproduction experiment.Comment: to be published in Physical Review

Absorption of the ω\omega and ϕ\phi Mesons in Nuclei

Due to their long lifetimes, the $\omega$ and $\phi$ mesons are the ideal candidates for the study of possible modifications of the in-medium meson-nucleon interaction through their absorption inside the nucleus. During the E01-112 experiment at the Thomas Jefferson National Accelerator Facility, the mesons were photoproduced from $^{2}$H, C, Ti, Fe, and Pb targets. This paper reports the first measurement of the ratio of nuclear transparencies for the $e^{+}e^{-}$ channel. The ratios indicate larger in-medium widths compared with what have been reported in other reaction channels.Comment: 6 pages, 4 figure

Near-threshold Photoproduction of Phi Mesons from Deuterium

We report the first measurement of the differential cross section on $\phi$-meson photoproduction from deuterium near the production threshold for a proton using the CLAS detector and a tagged-photon beam in Hall B at Jefferson Lab. The measurement was carried out by a triple coincidence detection of a proton, $K^+$ and $K^-$ near the theoretical production threshold of 1.57 GeV. The extracted differential cross sections $\frac{d\sigma}{dt}$ for the initial photon energy from 1.65-1.75 GeV are consistent with predictions based on a quasifree mechanism. This experiment establishes a baseline for a future experimental search for an exotic $\phi$-N bound state from heavier nuclear targets utilizing subthreshold/near-threshold production of $\phi$ mesons