New Particles from Belle

I report recent results on hidden charm spectroscopy from Belle. These include: observation of a near-threshold enhancement in the omega-J/psi invariant mass distribution for exclusive B-->K omega J/psi decays; evidence for the decay X(3872)-->pi+pi-pi0 J/psi, where the pi+pi-pi0 invariant mass distribution has a strong peak between 750 MeV and the kinematic limit of 775 MeV, suggesting that the process is dominated by the sub-threshold decay X-->omega J/psi; and the observation of a peak near 3940 MeV in the J/psi recoil mass spectrum for the inclusive continuum process e+e- --> J/psi X. The results are based on a study of a 287 fb-1 sample of e+e- annihilation data collected at center- of-mass energies around the Upsilon(4S) in the Belle detector at the KEKB collider.Comment: 10 pages 12 figures. Invited talk at the 1st meeting of the APS Topical Group on Hadronic Physics, Fermilab, October 24-26, 2004; revised to correct some reference

Properties of the DsJ states

Recent measurements involving the newly discovered D_sJ particles are reported. The results of D_sJ production and decay branching fraction measurements are shown. Possible spin-parity and quark content assignments of D_sJ mesons are discussed. The results are based on a large data sample recorded by the Belle detector at the KEKB e^+ e^- collider.Comment: 4 pages, 3 figures, proceedings to the talk given on behalf of the Belle Collaboration at the First Meeting of the APS Topical Group on Hadron Physic

Specifying sickle cell disease interventions: A study protocol of the Sickle Cell Disease Implementation Consortium (SCDIC)

Abstract Background Sickle cell disease (SCD) is an inherited blood disorder that results in a lifetime of anemia, severe pain, and end-organ damage that can lead to premature mortality. While the SCD field has made major medical advances, much needs to be done to improve the quality of care for people with SCD. This study capitalizes on the Sickle Cell Disease Implementation Consortium (SCDIC), a consortium of eight academic sites aiming to test implementation strategies that could lead to more accelerated application of the NHLBI guidelines for treating SCD. This report documents the process to support the consortium by specifying the interventions being developed. Methods This study consists of three steps. The Principal Investigator of each site and two site representatives who are knowledgeable of the intervention (e.g., study coordinator or the person delivering the intervention) will answer an online survey aiming to capture components of the interventions. This survey will be completed by the site representatives three times during the study: during the development of the interventions, after one year of the interventions being implemented, and at the end of this study (after 2 years). A site visit and semi-structured interview (Step 2) in the first year of the process will capture the context of the sites. Step 3 comprises of the development of a framework with the details of the multi-component SCDIC interventions at the sites. Discussion The outcome of this study, a framework of the SCDIC, will enable accurate replication and extension of published research, facilitating the translation of SCD studies to diverse populations and settings and allowing for theory testing of the effects of the intervention components across studies in different contexts and for different populations. Trial registration ClinicalTrial.Gov (#NCT03380351). Registered December 21, 2017

Dynamical mass of the O-type supergiant in Zeta Orionis A

A close companion of Zeta Orionis A was found in 2000 with the Navy Precision Optical Interferometer (NPOI), and shown to be a physical companion. Because the primary is a supergiant of type O, for which dynamical mass measurements are very rare, the companion was observed with NPOI over the full 7-year orbit. Our aim was to determine the dynamical mass of a supergiant that, due to the physical separation of more than 10 AU between the components, cannot have undergone mass exchange with the companion. The interferometric observations allow measuring the relative positions of the binary components and their relative brightness. The data collected over the full orbital period allows all seven orbital elements to be determined. In addition to the interferometric observations, we analyzed archival spectra obtained at the Calar Alto, Haute Provence, Cerro Armazones, and La Silla observatories, as well as new spectra obtained at the VLT on Cerro Paranal. In the high-resolution spectra we identified a few lines that can be associated exclusively to one or the other component for the measurement of the radial velocities of both. The combination of astrometry and spectroscopy then yields the stellar masses and the distance to the binary star. The resulting masses for components Aa of 14.0 solar masses and Ab of 7.4 solar masses are low compared to theoretical expectations, with a distance of 294 pc which is smaller than a photometric distance estimate of 387 pc based on the spectral type B0III of the B component. If the latter (because it is also consistent with the distance to the Orion OB1 association) is adopted, the mass of the secondary component Ab of 14 solar masses would agree with classifying a star of type B0.5IV. It is fainter than the primary by about 2.2 magnitudes in the visual. The primary mass is then determined to be 33 solar masses

Resilience-Focused Journalism: The Motivations, Tactics, and Impact of the Los Angeles Times Coverage of Earthquake Risk

As disasters and climate change threaten more and more people around the world, it is increasingly important for communities to adopt resilience policies. However, despite considerable benefits and the high probability of a return on investment, resilience policies are often neglected. In this article, we examine the agenda setting campaign by the Los Angeles Times that helped create the conditions for mandatory retrofitting ordinances to succeed where previous attempts failed. Through in-depth interviews with journalists and editors at the Times, and policymakers involved in the debate, we illustrate the motivations, tactics, and impact of their coverage of earthquake risk in Southern California. The article contributes to the understanding of agenda setting, risk communication, and local news production by demonstrating why and how journalists can effectively communicate risks and enable policy change, which could apply to a range of environmental threats

Behavioral factors contributing to the transmission of HIV and AIDS amongst young women of Mbabane in Swaziland

Background: HIV and AIDS remains a pandemic that has greatly affected many regions and countries in the world. Africa is the hardest hit region by tthis disease while southern Africa appears to be the melting pot for HIV and AIDS. The HIV and AIDS pandemic remains the greatest sustainable human development and public health challenge for Swaziland. Swaziland is the world’s worst affected country with the youth the most vulnerable group to HIV and AIDS due to many factors.Objectives:’Methods: This study investigated the behavioral factors that contributed to the transmission of HIV and AIDS among female youth of Mbabane in Swaziland and to suggest measures that could encourage positive female youth behavior change in order to mitigate the spread and impacts of the pandemic. The study used a qualitative research approach in order to gain an in-depth experience of female youths in Mabane. Data were collected using a questionnaire, which were distributed to 210 randomly sampled females aged 16 to 24 years in Mbabane and who attended Mbabane Public Health Unit. The Behavior Change Communication (BCC) theoretical framework was usedin order to contextualize the study.Results: Most respondents were female-single youth (64%), almost half (45%) had a high school education and most were unemployed (57%) with little or no source of income. The majority (88%) were sexually active and the main sources of HIV/AIDS transmission was through sex. For many (52%) health facilities were their main source of HIV and AIDS information. The majority (97%) were knowledgeable about HIV and AIDS, but casual sex, inconsistent condom usage and early sexual debut among others were still prevalent indicating resistance to behavior change.Conclusion: The findings indicated that though the majority of the respondents had knowledge of HIV and AIDS, positive behavior change remained a challenge. Most respondents (88%) had one sexual partner with 38% reporting condom use during their last sexual encounter. HIV/AIDS awareness was widespread. However, there were still characteristics of resistance to behavior change, because there was evidence of underestimation of HIV risk through engagement in behavior, which contributed to HIV infection and spread.Behavioral change measures using the BCC model is proposed.Keywords: BCC Model, behavior change, HIV, AIDS, youth, Swaziland