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1. Mixed-methods process evaluation of a residence-based SARS-CoV-2 testing participation pilot on a UK university campus during the COVID-19 pandemic

Author

H. Blake, S. Carlisle, L. Fothergill, J. Hassard, A. Favier, J. Corner, J. K. Ball, and C. Denning

Subjects
COVID-19, SARS-CoV-2, Universities, Process evaluation, Public health, Complex interventions, Public aspects of medicine, RA1-1270
Abstract

Abstract Background Regular testing for Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is an important strategy for controlling virus outbreaks on university campuses during the COVID-19 pandemic but testing participation rates can be low. The Residence-Based Testing Participation Pilot (RB-TPP) was a novel intervention implemented at two student residences on a large UK university campus over 4 weeks. The aim of the pilot was to increase the frequency of asymptomatic SARS-CoV-2 saliva testing onsite. This process evaluation aimed to determine whether RB-TPP was implemented as planned and identify implementation barriers and facilitators. Methods A mixed-methods process evaluation was conducted alongside the RB-TPP. Evaluation participants were students (opting in, or out of RB-TPP) and staff with a role in service provision or student support. Monitoring data were collected from the intervention delivery team and meeting records. Data were collected from students via online survey (n = 152) and seven focus groups (n = 30), and from staff via individual interviews (n = 13). Quantitative data were analysed descriptively and qualitative data thematically. Barriers and facilitators to implementation were mapped to the ‘Capability, Opportunity, Motivation–Behaviour’ (COM-B) behaviour change framework. Results Four hundred sixty-four students opted to participate in RB-TPP (98% of students living onsite). RB-TPP was implemented broadly as planned but relaxed social distancing was terminated early due to concerns relating to national escalation of the COVID-19 Delta variant, albeit testing continued. Most students (97.9%) perceived the period of relaxed social distancing within residences positively. The majority engaged in asymptomatic testing (88%); 46% (52% of testers) were fully compliant with pre-determined testing frequency. Implementation was facilitated by convenience and efficiency of testing, and reduction in the negative impacts of isolation through opportunities for students to socialise. Main barriers to implementation were perceived mixed-messages about the rules, ambivalent attitudes, and lack of adherence to COVID-19 protective measures in the minority. Conclusions This process evaluation identifies factors that help or hinder the success of university residence-based outbreak prevention and management strategies. RB-TPP led to increased rates of SARS-CoV-2 testing participation among students in university residences. Perceived normalisation of university life significantly enhanced student mental wellbeing. The complexity and challenge generated by multiple lines of communication and rapid adaptions to a changing pandemic context was evident. Trial registration number UKAS 307727–02-01; Pre-results. ClinicalTrials.gov Identifier: NCT05045989 ; post-results (first posted, 16/09/21). Ethical approval Faculty of Medicine & Health Sciences Research Ethics Committee, University of Nottingham (Ref: FMHS 96-0920)

Published
2022
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2. O025 Do surgeons’ psychosocial working conditions achieve United Kingdom government standards?

Author

J Houdmont, P Daliya, A Adiamah, E Theophilidou, J Hassard, and D N Lobo

Subjects
Surgery
Abstract

Introduction Burnout is endemic among surgeons in the UK. Identification of contributory work characteristics could inform risk reduction activities. The purpose of this study was to assess the extent to which surgeons’ psychosocial working conditions met aspirational Management Standards delineated by the UK government. A secondary objective was to explore relations between the extent to which the Standards were met and burnout. Methods In 2021, trainee surgeons (n = 214) and consultant surgeons (n = 322) completed questionnaire measures of psychosocial working conditions and burnout. Descriptive data were computed for each Standard and hierarchical linear regression was applied to explore relations between the extent to which the Standards were met and burnout. Results Trainee surgeons reported significantly poorer psychosocial working conditions than consultant surgeons on the control, peer support, and change Standards. Trainees’ psychosocial working conditions fell below the 10th percentile on four Standards (control, managerial support, role, change) and below the 50th percentile on the remainder (demands, peer support, relationships) when compared to UK workforce norms. Consultant surgeons’ psychosocial working conditions were below the 50th percentile on five of the seven Standards. The Management Standards accounted for 35% of the variance in burnout over and above that accounted for by socio- and occupational-demographic characteristics. Conclusion Surgeons’ psychosocial working conditions were poor in comparison to normative data and strongly associated with burnout. These findings suggest that psychosocial risk management activities based on the Management Standards approach would help to reduce stress-related health problems in this population.

Published
2023

4. Process evaluation of a university residence-based SARS-CoV-2 testing programme in the UK

Author

H Blake, S Carlisle, L Fothergill, J Hassard, A Favier, J Corner, JK Ball, and C Denning

Subjects
Public Health, Environmental and Occupational Health
Abstract

Background Regular testing for SARS-CoV-2 is an important strategy for controlling virus outbreaks on university campuses during the COVID-19 pandemic but testing participation can be low. The Residence-Based Testing Participation Pilot (RB-TPP) was a novel 4-week intervention implemented at two student residences on a UK university campus, aiming to increase asymptomatic testing frequency and normalise university life through relaxed social restrictions onsite. Methods Mixed-methods process evaluation determined whether RB-TPP was implemented as planned and identified implementation barriers and facilitators. Data were collected from meeting records, university students (online survey: n = 152; focus groups: n = 30), and staff (interviews, n = 13). Barriers and facilitators to implementation were mapped to the ‘Capability, Opportunity, Motivation-Behaviour’ (COM-B) behaviour change framework. Results Uptake was high (n = 464 students opted-in; 98% of those living onsite). Implementation was broadly as planned, with adjustments due to national escalation of the COVID-19 Delta variant. Majority engaged in testing (88%); 46% (52% of testers) were fully compliant with pre-determined testing frequency. Most felt positively towards relaxed social distancing (97.9%). Implementation was facilitated by convenience and efficiency of testing and reduced negative impacts of isolation through opportunities for students to socialise. Barriers to implementation were mixed-messages about the rules, ambivalent attitudes, and lack of adherence to COVID-19 protective measures in the minority. Conclusions This is the first process evaluation of the implementation of asymptomatic SARS-CoV-2 testing in university residences. Testing participation increased and student mental wellbeing improved. Rapid adaptions to the changing pandemic context generated complexity and challenge. Findings have global relevance for outbreak prevention and management strategies in higher education settings. Key messages • Delivery of asymptomatic SARS-CoV-2 testing and relaxation of social distancing within residences led to high rates of testing participation and benefits for student mental wellbeing. • This is the first process evaluation of the implementation of asymptomatic SARS-CoV-2 testing in university residences with global relevance for outbreak prevention in higher education settings.

Published
2022

5. Managing Minds at Work: development of a digital line manager training programme

Author

H Blake, B Vaughan, C Bartle, J Yarker, F Munir, S Marwaha, S Russell, C Meyer, J Hassard, and L Thomson

Subjects
Public Health, Environmental and Occupational Health
Abstract

Background Mental ill health is the leading cause of sickness absence with high economic burden. Workplace interventions aimed at supporting employers with prevention of mental ill-health in the workforce are urgently required. Managing Minds at Work (MMW) is a digital intervention targeting support for line managers in any work setting to promote better mental health at work through a preventative approach. Objectives To describe the design and development of the MMW digital training programme, prior to feasibility testing. We adopted a collaborative participatory design involving co-design (users as partners) and principles of user-centred design (pilot and usability testing). Agile methodology was used to co-create intervention content with a stakeholder community of practice. Development processes were mapped to core elements of the Medical Research Council (MRC) framework for developing and evaluating complex interventions. Results The program covers five broad areas: (i) promoting self-care techniques among line managers; (ii) designing work to prevent work-related stress; (iii) management competencies to prevent and reduce stress; (iv) having conversations with employees about mental health; (v) building a psychologically safe work environment. Pilot and usability testing (n = 37 surveys) aligned with the Technology Acceptance Model (TAM) demonstrated that MMW was perceived to be useful, relevant, and easy to use by managers across sectors, organization types and sizes. We identified positive impacts on manager attitudes and behavioural intentions related to preventing mental ill-health and promoting good mental well-being at work. Conclusions MMW is a digital training programme for line managers that has been co-created using rigorous development processes and aims to support employers with primary prevention in mental health. The next step is to explore the feasibility and acceptability of this intervention with line managers in diverse employment settings. Key messages

Published
2022

6. Comparison of the effects of 2,2,2-trifluoroethanol on peptide and protein structure and function

Author

Mark J. Howard, Jane F. Povey, Stuart J. Hassard, and C. Mark Smales

Subjects
Models, Molecular, Peptide, Protein Structure, Secondary, Structure-Activity Relationship, chemistry.chemical_compound, Protein structure, Structural Biology, Animals, Denaturation (biochemistry), Amino Acid Sequence, Nuclear Magnetic Resonance, Biomolecular, Protein secondary structure, chemistry.chemical_classification, Circular Dichroism, Trifluoroethanol, Protein tertiary structure, Crystallography, Spectrometry, Fluorescence, chemistry, 2,2,2-Trifluoroethanol, Solvents, Muramidase, Protein folding, Lysozyme, Peptides, Chickens
Abstract

The co-solvent 2,2,2-trifluoroethanol (TFE) has been often used to aid formation of secondary structure in solution peptides or alternately as a denaturant within protein folding studies. Hen egg white lysozyme (HEWL) and a synthetic model peptide defining HEWL helix-4 were used as comparative model systems to systematically investigate the effect of increasing TFE concentrations on the structure of proteins and peptides. HEWL was analyzed using NMR, far-UV CD and fluorescence spectroscopy; with correlation of these results towards changes in enzymatic activity and the helix-4 peptide was analysed using NMR. Data illustrates two conflicting modes of interaction: Low TFE concentrations stabilize tertiary structure, observed from an increase in the number of NMR NOE contacts. Higher TFE concentrations denatured HEWL with the loss of lysozyme tertiary structure. The effects of TFE upon secondary structural elements within HEWL are distinct from those observed for the helix-4 peptide. This illustrates a dissimilar interaction of TFE towards both protein and peptide at equivalent TFE concentrations. The concentration that TFE promotes stabilization over denaturation is likely to be protein dependent although the structural action can be extrapolated to other protein systems with implications for the use of TFE in structural stability studies.

Published
2007

7. The detection and recognition of underground nuclear explosions

Author

P. K. H. Maguire, K. Playford, V. Gupta, P. M. Lewis, A. Douglas, R. A. Clark, F. Ringdal, P. Argo, and J. Hassard

Subjects
Signal detector, Geophysics, Nuclear testing, Geochemistry and Petrology, Computer science, Systems engineering, Sampling (statistics), Joint (building), Satellite, Treaty, International exchange, Radar signals, Remote sensing
Abstract

This paper reports on a joint meeting of the Royal Astronomical Society's Joint Association for Geophysics and VERTIC (the Verification Technology Information Centre) held in London in 1992. The topics presented focused on the detection and recognition of underground nuclear explosions. The objective of the meeting was to emphasize the multi-methodological approach that is important in verifying compliance with test-ban treaties. An overview of seismological monitoring was followed by a discussion of the technical and scientific aspects of a global seismic monitoring network, and in particular of the 1991 experiment to test the large-scale international exchange of seismic data between recording stations and data centres world-wide. The current capabilities of satellite remote-sensing were presented, and their use explained in terms of both the provision of information for monitoring the development of foreign nuclear testing programmes and also for providing sufficient information for the evaluation of treaty compliance. A review of radio-isotope sampling showed how the isotopic signature of both air and ground based sampling programmes can be diagnostic of the nuclear source. Finally, previously classified research on the ionospheric effects of underground nuclear explosions was presented, the generated acoustic waves disturbing the ionosphere and producing detectable changes in the reflection of radio and radar signals which have potential as a monitoring technique.

Published
1995

8. Diamond detectors for high energy physics

Author

C. White, W. Dulinski, D. Fujino, K.K. Gan, R. Gilman, S. Han, J. Hassard, A. Howard, H. Kagan, S. Kanda, D. Kania, R. Kass, S.K. Kim, G. Kumbartski, M.H. Lee, K. Lister, R. Malchow, S. Margetides, L.S. Pan, P. Rutt, F. Sannes, S. Schnetzer, S.V. Somalwar, J. Straver, R. Stone, R. Tesarek, G.B. Thomson, W. Trischuk, Y. Sugimoto, P. Weilhammer, and S. Zhao

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Silicon, Position resolution, Detector, chemistry.chemical_element, A diamond, Chemical vapor deposition, chemistry, Charged particle detectors, Cathode ray, Instrumentation, Diamond detector
Abstract

We have constructed charged particle detectors using high quality CVD diamond. We report here the measurements of a diamond-tungsten sampling calorimeter and a diamond mustrip detector. The energy response and resolution (σEE) of the calorimeter were measured using an electron beam of energy 0.5 to 5.0 GeV, and compared with those from a silicon calorimeter of similar construction. We find σEE = (4.7 ± 2.7)%/E ⊕ (19.13 ± 0.86)%/√E ⊕ (2.3 ± 1.8)% for the diamond-tungsten calorimeter, where ⊕ indicates addition in quadrature, which is in good agreement with our result of σE/E = (3.89 ± 0.87)%/E ⊕ (19.73 ± 0.19)%/√E ⊕ (0.0 ± 1.6)% for the silicon-tungsten calorimeter. The CVD diamond mustrip detector consists of 50 μm wide strips on 100 μm centers. A signal-to-noise ratio of 6: 1 and a position resolution of 25 μm was observed during recent accelerator tests.

Published
1994

9. Investigating the impact of psychosocial risks and occupational stress on psychiatric hospital nurses' mental well-being in Japan

Author

S, Leka, J, Hassard, and A, Yanagida

Subjects
Adult, Hospitals, Psychiatric, Male, Social Support, Psychiatric Nursing, Workload, Middle Aged, Nursing Staff, Hospital, Occupational Diseases, Young Adult, Cross-Sectional Studies, Japan, Risk Factors, Humans, Female, Stress, Psychological, Aged
Abstract

A cross-sectional survey was conducted, with the aim to examine what stressors in the workplace and demographic factors were associated with signs and symptoms of poor well-being among psychiatric nurses. A structured questionnaire was distributed to nurses within six psychiatric hospitals in Japan. Information was collected on demographic information, work characteristics and two dimensions of well-being: feeling uptight and emotional exhaustion. Three hundred and sixty-one questionnaires were completed by participants. High rates of emotional exhaustion in psychiatric nurses were found to be predicted by young age, high psychological demands paired with low social support in the workplace, job strain (a proxy to occupational stress) and job strain paired with low social support. In addition, high rates of being tense/uptight were associated with high psychological job demand, low psychological job control, low social support in the workplace, high job strain and high job strain paired with low social support. The current study has found evidence of significant relationships between demographic factors and several work and organizational stressors and poor mental health among Japanese psychiatric nurses.

Published
2011

10. A mobile environmental sensing system to manage transportation and urban air quality

Author

J. Hassard, Neil Hoose, John W. Polak, Robin J North, M. Richards, and Jeremy Cohen

Subjects
Strategic planning, Transport engineering, Mobile radio, Management information systems, Engineering, business.industry, Sensor node, Incident management (ITSM), Systems architecture, Systems engineering, business, Wireless sensor network, Air quality index
Abstract

This work presents an integrated mobile environmental sensing and analysis system developed to support the management of transport and urban air quality. A novel spectroscopic UV sensor is employed to provide second-by- second measurements of multiple pollutants at ppb levels. Sensor nodes are deployed on vehicles, infrastructure and people and feed data into a dynamically configurable e-science computing platform that scales to support both near real-time incident management and longer term strategic planning decisions. This paper describes the system architecture and sensor node design alongside results from system development testing. It goes on to highlight avenues for future development and the potential for further applications involving the wider sensors community.

Published
2008

11. Systematic implementation of an advance health care directive in the community

Author

C, Patterson, D W, Molloy, G H, Guyatt, M, Bedard, J, North, J, Hassard, K, Willison, R, Jubelius, and P, Darzins

Subjects
Affect, Canada, Activities of Daily Living, Chronic Disease, Humans, Advance Directives, Community Health Nursing, Geriatric Assessment, Home Care Services, Aged
Abstract

In Canada, advance directives have been developed to ensure individual's decisions about health care are known in the event of mental incapacity. This randomized control trial examined the proportion of chronically ill elders receiving Victorian Order of Nurses (VON) services in the home who would complete an advance directive, factors associated with directive completion, treatment choices, and satisfaction with care. The participants consisted of 163 elders with a chronic illness residing within the Hamilton-Wentworth and Haldimand-Norfolk regions in South Central Ontario. Seventy percent of the experimental group completed the directive. Younger patients (p = 0.01) and patients with particular nurses (p = 0.04) were more likely to complete a directive. Psychosocial variables such as mood, depression, and uncertainty in illness did not influence directive completion. Satisfaction with involvement in health care decisions was not changed by this intervention (p = 0.576).

Published
1997

13. B physics and cp violation studies with the cms detector at lhc

Author

S. Margetides, M. Pimiä, Y. Lemoigne, M. Konecki, N. J. Sinanis, Tejinder Virdee, C. Racca, J. Hassard, Ritva Kinnunen, G. Wrochna, A. Fridman, N. Neumeister, A. Kharchilava, A. Starodumov, V. Karimäki, André Rubbia, Daniel Denegri, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and Heyd, Yvette

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Luminosity (scattering theory), Unitarity, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 010401 analytical chemistry, Detector, Astronomy and Astrophysics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Measure (mathematics), Atomic and Molecular Physics, and Optics, 0104 chemical sciences, Nuclear physics, Baryon, 0103 physical sciences, CP violation, Sensitivity (control systems), 010306 general physics
Abstract

In this paper we evaluate the potential of the CMS detector for the measurement of CP violation in the B system at the initial low luminosity of LHC (~1033 cm −2 s −1). The sensitivity to the unitarity triangle angle β obtained from the [Formula: see text] channel is given by δ ( sin 2β) = 0.046, whilst the sensitivity to a from the [Formula: see text] channel is given by δ ( sin 2α) = 0.082. We also discuss the possibilities of observing semi-inclusive B → μ + D(s) final states, to measure [Formula: see text] oscillations and to observe some B baryon modes.

Published
1994

14. Performance of a diamond - tungsten sampling calorimeter

Author

Yasuhiro Sugimoto, Robert Stone, K. K. Gan, Gordon Thomson, S. Zhao, G. Kumbartski, S. Han, M. Franklin, W. Palmer, S. Kanda, L. S. Pan, Sunil Somalwar, R. Malchow, P. Rutt, Steve Schnetzer, R. D. Kass, Sun Kee Kim, D. Fujino, B. Morozov, M. H. Lee, D. R. Kania, Christopher G. White, Harris Kagan, F. Sannes, R. Tesarek, Ronald Gilman, J. Hassard, and S. Margetides

Subjects
Physics, Nuclear and High Energy Physics, Silicon, Analytical chemistry, A diamond, Diamond, chemistry.chemical_element, Electron, Chemical vapor deposition, engineering.material, Tungsten, Radiation length, chemistry, engineering, Wafer, Detectors and Experimental Techniques, Instrumentation
Abstract

We report here the first measurements of a diamond-tungsten sampling calorimeter. The calorimeter consisted of twenty layers of diamond with one radiation length of tungsten per layer. The diamond layers were grown by chemical vapor deposition and were $3.0 \times 3.0$ cm$^2$ wafers with an average thickness of $500 \mu \rm{m}$. We measured the energy response and resolution $(\sigma_E / E)$ of this calorimeter in 0.5–5.0 GeV electron beams and compared the results with those from a silicon calorimeter of similar construction. Our energy resolution is $\sigma_E / E = (4.7 \pm 2.7) \% / E \oplus (19.13 \pm 0.86) \% / \sqrt{E} \oplus (2.3 \pm 1.8) \%$ for the diamond-tungsten calorimeter, where $\oplus$ indicates addition in quadrature. This is in good agreement with our result for the silicon-tungsten calorimeter of $\sigma_E / E = (3.89 \pm 0.87) \%/ E \oplus (19.73 \pm 0.19) \% / \sqrt{E} \oplus (0.0 \pm 1.6) \%$. We also compare our data with EGS simulations.

Published
1994

15. The Design To Manufacturing Interface In CIM: Evidence From Medium Sized UK Organizations

Author

C. Hawksley, P. Forrester, J. Hassard, and Neleon Tang

Subjects
Engineering, Computer-integrated manufacturing, business.industry, Integrated Computer-Aided Manufacturing, Process development execution system, Computer-aided manufacturing, Production engineering, Advanced manufacturing, business, Mechanical engineering technology, IDEF0, Manufacturing engineering
Published
1992

17. Nuclear fixes

Author

J. Hassard

Subjects
General Physics and Astronomy
Published
1993

18. Limit on the mass of the tau neutrino

Author

Harris Kagan, Paul Tipton, M. S. Alam, Richard Wilson, C. Bebek, Ron Poling, S. E. Csorna, I. J. Kim, Sheldon Stone, A. M. Halling, Paul Avery, Ian Brock, R. Kowalewski, Chih-Ree Sun, Themistocles Bowcock, P. Haas, James Mueller, D. L. Kreinick, R. DeSalvo, K. Kinoshita, A. Chen, D. Perticone, J. Hassard, T. Jensen, N. B. Mistry, S. Holzner, S. Behrends, M. Pisharody, A. Silverman, G. C. Moneti, Karl Berkelman, M. D. Mestayer, D. Riley, V. Sharma, R. Ehrlich, T. Copie, C. Rippich, M. Goldberg, B. K. Heltsley, Kenneth Francis Read, A. Engler, R. D. Kass, M. Hempstead, Hans J. Vogel, Xia Yi, Joan A. Guida, J. Kandaswamy, N. Katayama, S. W. Gray, L. Garren, R. W. Kraemer, M. Ito, J. Wolinski, E. Nordberg, D. Peterson, P. Lubrano, R. Holmes, N. Horwitz, M. Ogg, Alice Bean, G. B. Word, R. T. Giles, F. Morrow, R. S. Panvini, G. J. Bobbink, E. H. Thorndike, F. M. Pipkin, D. L. Hartill, V. Tanikella, E. Blucher, R. Namjoshi, A. Jawahery, T. Gentile, D. Xiao, D. Besson, D. G. Cassel, Murdock Gilchriese, B. Gittelman, A. J. Sadoff, R. S. Galik, Daniela Bortoletto, Y. Kubota, Thomas Ferguson, J. W. Dewire, and Jan M. Guida

Subjects
Nuclear physics, Massless particle, Physics, Particle decay, Particle physics, Annihilation, Tau neutrino, High Energy Physics::Experiment, Elementary particle, Limit (mathematics), Neutrino, Lepton
Abstract

We place an upper limit on the mass of the tau neutrino by using the total-charged-energy distribution in three-track tau decays. Including both statistical and systematic uncertainties, the 95%-confidence-level limit is m/sub ..nu../

Published
1987

19. Measurement of theϒmass

Author

R. T. Giles, M. Hempstead, J. Hassard, Richard Wilson, L. N. Hand, K. Kinoshita, F. M. Pipkin, and W. W. MacKay

Subjects
Nuclear physics, Physics, Antiparticle, Meson, CLEO, Electron–positron annihilation, Antimatter, Hadron, CUSB, Atomic physics, Cornell Electron Storage Ring
Abstract

We have detected the polarization of the positron beam in the Cornell Electron Storage Ring (CESR) with a polarimeter which detects back-scattered laser light. The beam was resonantly depolarized using a vertical shaker magnet with a rf field, thus measuring the $g\ensuremath{-}2$ frequency. This gave us a precise value for the beam energy in CESR. By scanning the $\ensuremath{\Upsilon}$ resonance with the CUSB detector, we obtained a mass ${M}_{\ensuremath{\Upsilon}}=9459.97\ifmmode\pm\else\textpm\fi{}0.11\ifmmode\pm\else\textpm\fi{}0.07$ MeV. We also give rescaled values for the excited $\ensuremath{\Upsilon}$ states.

Published
1984

20. Study ofπ+π−transitions from the Υ(3S)

Author

D. Perticone, S. Holzner, S. Behrends, Jan M. Guida, D. L. Hartill, R. W. Kraemer, T. Copie, R. Ehrlich, A. Jawahery, N. Horwitz, E. Nordberg, Thomas Ferguson, B. K. Heltsley, D. G. Cassel, R. Desalvo, A. Engler, V. Tanikella, C. Rippich, Kenneth Francis Read, Hans J. Vogel, D. Z. Besson, M. Hempstead, R. Poling, D. L. Kreinick, C. Bebek, T. Gentile, H. Kagan, Murdock Gilchriese, Paul Tipton, James Mueller, B. Gittelman, M. Ogg, P. Haas, G.J. Bobbink, I. J. Kim, A. J. Sadoff, Xia Yi, A. M. Halling, R. S. Panvini, J. Hassard, A. Silverman, M. Pisharody, T. Jensen, Karl Berkelman, E. H. Thorndike, M. Ito, Daniela Bortoletto, L. Garren, J. W. Dewire, F. M. Pipkin, Themistocles Bowcock, R. Kowalewski, J. Wolinski, A. Chen, F. Morrow, R. S. Galik, D. Xiao, N. B. Mistry, M. S. Alam, Joan A. Guida, J. Kandaswamy, M. Goldberg, G. C. Moneti, Vivek Sharma, D. Peterson, R. T. Giles, N. Katayama, M. D. Mestayer, R. Namjoshi, S. W. Gray, E. Blucher, P. Lubrano, R. Holmes, Alice Bean, S. E. Csorna, K. Kinoshita, D. Riley, G. B. Word, I. C. Brock, Yuichi Kubota, Richard Wilson, C. R. Sun, R. D. Kass, Sheldon Stone, and Paul Avery

Subjects
Nuclear physics, Physics, Particle physics, Electron–positron annihilation, Pi, General Physics and Astronomy
Published
1987

21. Ruling out exotic models of b quark decay

Author

A. Jawahery, Robert Stone, E. H. Thorndike, F. M. Pipkin, W. W. MacKay, M. Herzlinger, K. Chadwick, P. Ganci, C. Rosenfeld, A. Fridman, R. Wilcke, Murdock Gilchriese, J. Chauveau, T. Ferguson, G. Rucinski, D. G. Cassel, Harris Kagan, H. Van Hecke, J. Haggerty, G. Parkhurst, H. Kooy, A. Chen, G. C. Moneti, Ron Poling, P. Avery, F. Sannes, S. L. Olsen, Joseph Izen, B. Gittelman, P. Lipari, Karl Berkelman, R. Plunkett, S. Holzner, M. Ogg, R. Ehrlich, N. Horwitz, M. S. Alam, T. Gentile, D. Weber, M. Hempstead, M. Ito, R. S. Panvini, Richard Wilson, J. Rohlf, D. Herrup, J. Hassard, A. Silverman, R. G. Hicks, M. Goldberg, V. Kistiakowsky, F. Morrow, R. S. Galik, D. L. Kreinick, A. J. Sadoff, Y. Kubota, R. Perchonok, J. W. Dewire, Joan A. Guida, J. Kandaswamy, N. B. Mistry, A. Snyder, P. Skubic, P. C. Stein, S. E. Csorna, Sheldon Stone, R. D. Kass, E. Nordberg, M. Jibaly, D. L. Hartill, M. D. Mestayer, James C. Green, C. J. Bebek, A. C. Melissinos, and D. Andrews

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Energy Fraction, High Energy Physics::Phenomenology, Higgs boson, High Energy Physics::Experiment, Electron, Bottom quark, Lepton
Abstract

We consider three broad classes of nonstandard models for b quark decay: (1) b → llq with charged or neutral leptons of arbitrary flavor; (2) b → l q q ; and (3) b → qa − where a − is a Higgs boson or hyperpion. For these classes of models we have calculated the charged energy fraction and the inclusive yields of electrons, muons, protons, and lambdas. We demonstrate that these model predictions are inconsistent with CLEO measurements at the γ (4S).

Published
1983

22. Measurement of the Leptonic Branching Ratios of theϒ(1S),ϒ(2S), andϒ(3S)

Author

G. C. Moneti, D. Andrews, D. G. Cassel, Karl Berkelman, Sheldon Stone, N. B. Mistry, J. W. Dewire, S. Holzner, S. Behrends, M. D. Mestayer, C. J. Bebek, Y. Kubota, G. Parkhurst, E. H. Thorndike, M. Ogg, R. S. Panvini, K. Chadwick, W. W. MacKay, P. Ganci, F. M. Pipkin, A. Fridman, D. L. Kreinick, Jan M. Guida, Richard Wilson, J. Chauveau, Joan A. Guida, J. Kandaswamy, Ron Poling, T. Gentile, M. Halling, P. Lipari, L. Garren, F. Morrow, R. Wilcke, R. Plunkett, R. Ehrlich, D. Peterson, Robert Stone, R. Galik, M. Ito, Murdock Gilchriese, A. Snyder, B. Gittelman, R. T. Giles, N. Horwitz, M. Goldberg, M. S. Alam, R. D. Kass, C. Rosenfeld, M. Hempstead, D. Weber, T. Ferguson, D. L. Hartill, V. Kistiakowsky, A. Chen, R. Perchonok, C. G. Trahern, S. L. Olsen, G. Rucinski, F. Sannes, J. Hassard, A. Silverman, P. C. Stein, S. E. Csorna, A. Jawahery, D. Herrup, H. Kagan, J. Rohlf, James C. Green, P. Avery, K. Kinoshita, A. J. Sadoff, Joseph Izen, R. G. Hicks, A. C. Melissinos, E. Nordberg, M. Jibaly, H. Van Hecke, and P. Skubic

Subjects
Nuclear physics, Physics, Particle physics, Particle decay, Muon, Meson, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, Cornell Electron Storage Ring, Lepton
Abstract

Using the CLEO detector at the Cornell Electron Storage Ring, the authors have measured the leptonic branching fraction, B/sub mumu/, of the UPSILON(1S), UPSILON(2S), and UPSILON(3S) to be 2.7 +- 0.3 +- 0.3%, 1.9 +- 1.3 +- 0.5%, and 3.3 +- 1.3 +- 0.7%, respectively. Combining these values of B/sub mumu/ with previous measurements of the leptonic widths of these resonances, the authors find the total width of the UPSILON(1S), UPSILON(2S), and UPSILON(3S) to be 48 +- 4 +- 4, 27 +- 17 +- 6, and 13 +- 4 +- 3 keV.

Published
1983

23. High-statistics study ofϒ(2S)→π+π−ϒ(1S)

Author

D. L. Hartill, Ron Poling, Y. Kubota, S. Holzner, S. Behrends, M. Goldberg, G. C. Moneti, Richard Wilson, R. Namjoshi, Paul Tipton, Joan A. Guida, J. Kandaswamy, D. G. Cassel, M. Hempstead, R. Wilcke, S. L. Olsen, Murdock Gilchriese, T. Gentile, B. Gittelman, L. Garren, W. W. MacKay, R. D. Kass, E. H. Thorndike, A. Chen, M. Ogg, H. Van Hecke, J. W. Dewire, F. M. Pipkin, F. Sannes, N. B. Mistry, R. Ehrlich, Jan M. Guida, C. Bebek, G. Parkhurst, M. D. Mestayer, M. S. Alam, D. Weber, R. S. Panvini, R. G. Hicks, Xia Yi, F. Morrow, Karl Berkelman, J. Hassard, A. Silverman, N. Horwitz, R. S. Galik, H. Kagan, M. Ito, J. Chauveau, M. Halling, R. T. Giles, A. C. Melissinos, A. J. Sadoff, C. G. Trahern, P. Avery, P. Haas, Robert Stone, D. Besson, P. C. Stein, S. E. Csorna, James C. Green, K. Kinoshita, C. Rosenfeld, P. Lipari, D. Peterson, T. Jensen, Sheldon Stone, K. Chadwick, E. Nordberg, T. Ferguson, P. Skubic, A. Jawahery, D. L. Kreinick, and A. Snyder

Subjects
Physics, Particle decay, Pion, Meson, Branching fraction, Electron–positron annihilation, Hadron, Analytical chemistry, Elementary particle, Cornell Electron Storage Ring
Abstract

A detailed investigation of the decay UPSILON(2S)..--> pi../sup +/..pi../sup -/UPSILON(1S) has been made from 128 000 UPSILON(2S) decays observed in the CLEO detector at the Cornell Electron Storage Ring (CESR). We find this branching ratio to be (19.1 +- 1.2 +- 0.6)%. The properties of the ..pi pi.. system have been studied using 491 exclusive events of the type UPSILON(2S)..--> pi../sup +/..pi../sup -/UPSILON(1S), UPSILON(1S)..-->..e/sup +/e/sup -/ or ..mu../sup +/..mu../sup -/. Assuming e-..mu.. universality we find B(UPSILON(1S)..--> mu../sup +/..mu../sup -/) = (2.84 +- 0.18 +- 0.20)%. A search for UPSILON(2S)..-->..etaUPSILON(1S) yields an upper limit of 1% at the 90% confidence level for this branching ratio. We have also searched for (UPSILON(2S) or UPSILON(3S))..--> pi../sup +/..pi../sup -/UPSILON(1S), UPSILON(1S)..-->..noninteracting particles.

Published
1984

24. Study of the decayB→ψX

Author

Jan M. Guida, C. Rippich, T. Copie, Chih-Ree Sun, Ron Poling, R. D. Kass, D. Perticone, S. Holzner, S. Behrends, I. J. Kim, J. Wolinski, C. Bebek, M. Pisharody, S. W. Gray, N. Katayama, Karl Berkelman, P. Lubrano, Joan A. Guida, Richard Wilson, E. H. Thorndike, J. Kandaswamy, Sheldon Stone, D. G. Cassel, M. D. Mestayer, B. K. Heltsley, A. Jawahery, Kenneth Francis Read, Paul Avery, F. M. Pipkin, R. Kraemer, R. Holmes, A. Engler, Alice Bean, D. Riley, A. Chen, T. J. V. Bowcock, J. Hassard, A. Silverman, R. S. Panvini, D. Peterson, Ian Brock, Thomas Ferguson, R. Kowalewski, M. Hempstead, H. Kagan, R. DeSalvo, T. Jensen, M. Goldberg, G. C. Moneti, E. Nordberg, R. S. Galik, N. Horwitz, D. L. Kreinick, Y. Kubota, M. Ogg, S. E. Csorna, N. B. Mistry, A. J. Sadoff, E. Blucher, R. Namjoshi, P. Haas, Murdock Gilchriese, B. Gittelman, D. Xiao, M. Ito, R.B. Sutton, F. Morrow, Hans J. Vogel, R. T. Giles, K. Kinoshita, C. Rosenfeld, M. S. Alam, G. B. Word, Paul Tipton, L. Garren, Daniela Bortoletto, J. W. Dewire, D. Besson, D. L. Hartill, T. Gentile, Xia Yi, G. J. Bobbink, James Mueller, V. Sharma, R. Ehrlich, V. Tanikella, and A. M. Halling

Subjects
Physics, Meson, Branching fraction, Electron–positron annihilation, Hadron, Quark model, Mass spectrum, Analytical chemistry, B meson, Elementary particle
Abstract

We have measured the inclusive branching ratio for B..-->..psiX to be (1.09 +- 0.16 +- 0.21)%, and the exclusive branching ratios for B/sup -/..-->..psiK/sup -/ and B-bar /sup 0/..-->..psiK-bar /sup *//sup 0/ to be (0.09 +- 0.05)% and (0.41 +- 0.18)%, respectively. The mass difference between neutral and charged B mesons is 1.1 +- 2.1 MeV, while the difference between the mass of UPSILON(4S) and twice the mean B-meson mass is 18.5 +- 3.0 MeV. The psi momentum distribution implies a substantial two-body decay (in agreement with direct measurements), but also some combination of B..-->..psiX with M/sub X/>1.5 GeV, and B..-->..psi'X.

Published
1986

25. ΛcProduction frome+e−Annihilation in theϒEnergy Region

Author

Murdock Gilchriese, B. Gittelman, Jan M. Guida, M. Ito, D. Bartoletto, D. Peterson, Paul Tipton, Ron Poling, D. G. Cassel, R. S. Galik, Xia Yi, R. DeSalvo, Themistocles Bowcock, G. C. Moneti, R. D. Kass, C. Bebek, G. Parkhurst, Y. Kubota, D. Besson, R. S. Panvini, D. L. Hartill, A. Chen, P. Lubrano, F. Sannes, Richard Wilson, D. Perticone, S. Holzner, S. Behrends, James C. Green, E. H. Thorndike, A. M. Halling, T. Copie, J. W. Dewire, F. M. Pipkin, M. Goldberg, M. S. Alam, Thomas Ferguson, Robert Stone, C. Rosenfeld, G. B. Word, P. C. Stein, S. E. Csorna, H. Kagan, Alice Bean, Sheldon Stone, K. Kinoshita, M. D. Mestayer, C. G. Trahern, P. Avery, N. B. Mistry, R. Namjoshi, S. W. Gray, Joan A. Guida, J. Kandaswamy, F. Morrow, A. J. Sadoff, M. Hempstead, T. Gentile, P. Haas, M. Ogg, J. Hassard, A. Silverman, E. Nordberg, R. T. Giles, P. Skubic, N. Horwitz, A. Jawahery, H. Van Hecke, M. Pisharody, Karl Berkelman, Xu Kezun, B. K. Heltsley, Kenneth Francis Read, D. L. Kreinick, T. Jensen, L. Garren, and R. Ehrlich

Subjects
Physics, Particle physics, Annihilation, Meson, Branching fraction, Nuclear Theory, High Energy Physics::Phenomenology, Hadron, General Physics and Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Lambda, Nuclear physics, Baryon, Particle decay, Pion, High Energy Physics::Experiment, Nuclear Experiment
Abstract

We have observed ..lambda../sub c/ baryons in nonresonant e/sup +/e/sup -/ annihilation at energies around ..sqrt..s = 10.5 GeV through their decay to ..lambda pi../sup +/..pi../sup +/..pi../sup -/. We measure the branching fraction to be (2.8 +- 0.7 +- 1.1)%. The momentum spectrum of the ..lambda../sub c/ is similar to that of charmed mesons, providing a constraint on models of charmed-quark hadronization.

Published
1985

26. Production of Charmed Mesons ine+e−Annihilation at 10.5 GeV

Author

H. Kagan, M. D. Mestayer, Jan M. Guida, S. L. Olsen, D. Weber, Robert Stone, James C. Green, R. Plunkett, J. Hassard, A. Silverman, A. J. Sadoff, E. H. Thorndike, Richard Wilson, F. M. Pipkin, Xia Yi, A. C. Melissinos, J. Chauveau, H. Van Hecke, F. Morrow, P. Avery, T. Jensen, Karl Berkelman, W. W. MacKay, P. Ganci, M. Halling, D. L. Hartill, Ron Poling, Joan A. Guida, G. Rucinski, N. Horwitz, Y. Kubota, Sheldon Stone, R. S. Galik, R. S. Panvini, P. Lipari, D. Peterson, V. Kistiakowsky, C. G. Trahern, A. Jawahery, J. Kandaswamy, D. G. Cassel, E. Nordberg, M. S. Alam, M. Goldberg, G. C. Moneti, A. Chen, F. Sannes, J. W. Dewire, D. L. Kreinick, M. Hempstead, R. Wilcke, Murdock Gilchriese, Paul Tipton, R. Perchonok, B. Gittelman, C. Rosenfeld, M. Ito, A. Snyder, P. C. Stein, S. E. Csorna, R. T. Giles, P. Skubic, K. Kinoshita, R. D. Kass, T. Gentile, M. Ogg, L. Garren, R. Ehrlich, N. B. Mistry, R. G. Hicks, C. Bebek, G. Parkhurst, K. Chadwick, T. Ferguson, D. Herrup, S. Holzner, and S. Behrends

Subjects
Quark, Physics, Particle physics, Annihilation, Meson, Electron–positron annihilation, Nuclear Theory, High Energy Physics::Phenomenology, General Physics and Astronomy, Resonance (particle physics), Nuclear physics, Momentum, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, Energy (signal processing)
Abstract

A measurement is presented of the inclusive production of charged ${D}^{*}$ and neutral $D$ mesons from nonresonant ${e}^{+}{e}^{\ensuremath{-}}$ annihilation in the energy region near the $\ensuremath{\Upsilon}(4S)$ resonance. The momentum distribution shows a large contribution at high momenta as expected for heavy quark production. Comparison of the spectrum with several phenomenological models is made. The relative yields of the ${D}^{*}$ and $D$ mesons indicate that the charm cross section is dominated by the ${D}^{*}$ contribution.

Published
1983

27. Observation of the decay B¯D+0ρ−

Author

Xia Yi, M. S. Alam, Robert Stone, Xu Kezun, Joan A. Guida, J. Kandaswamy, A. Jawahery, L. Garren, M. Halling, M. D. Mestayer, C. G. Trahern, R. T. Giles, R. Ehrlich, D. Peterson, D. L. Kreinick, M. Ito, P. Skubic, P. C. Stein, C. Bebek, G. Parkhurst, D. Besson, P. Avery, Kenneth Francis Read, S. E. Csorna, E. H. Thorndike, A. Chen, F. M. Pipkin, M. Goldberg, P. Haas, N. B. Mistry, F. Sannes, Karl Berkelman, G. C. Moneti, T. Ferguson, R. Namjoshi, K. Kinoshita, C. Rosenfeld, D. Perticone, S. Holzner, R. S. Galik, Sheldon Stone, S. Behrends, M. Ogg, And H. Van Hecke, R. D. Kass, N. Horwitz, Paul Tipton, R. DeSalvo, E. Nordberg, D. L. Hartill, Ron Poling, M. Hempstead, W. W. MacKay, H. Kagan, Richard Wilson, A. J. Sadoff, J. Hassard, A. Silverman, D. G. Cassel, T. Copie, J. W. Dewire, T. Jensen, Jan M. Guida, Y. Kubota, Murdock Gilchriese, B. Gittelman, R. S. Panvini, F. Morrow, T. Gentile, and James C. Green

Subjects
Physics, Particle physics, Particle decay, Pair production, Pion, Meson, Branching fraction, Hadron, Elementary particle, B meson
Abstract

The decay B-bar /sup 0/..-->..D/sup asterisk+/rho/sup -/ has been observed and the branching ratio is found to be (8.1 +- 2.9/sub -2.4//sup +5.9/)%. The result is compared with theoretical predictions.

Published
1985

28. A search for the ρ(2.2) in the ϒ region

Author

H. Van Hecke, Xia Yi, J. Chauveau, M. Halling, C. G. Trahern, K. Chadwick, Karl Berkelman, Richard Wilson, E. H. Thorndike, P. Lipari, F. M. Pipkin, J. W. Dewire, James C. Green, T. Ferguson, F. Morrow, R. S. Panvini, A. Snyder, D. Besson, D. Peterson, C. Rosenfeld, L. Garren, R. G. Hicks, P. Haas, E. Nordberg, R. Wilcke, Robert Stone, P. Avery, R. D. Kass, Murdock Gilchriese, A. C. Melissinos, R. S. Galik, R. Ehrlich, D. L. Hartill, P. Skubic, Jan M. Guida, Ron Poling, M. D. Mestayer, B. Gittelman, A. Chen, N. Horwitz, D. Weber, W. W. MacKay, F. Sannes, C. Bebek, G. Parkhurst, D. G. Cassel, Y. Kubota, J. Hassard, A. Silverman, T. Gentile, N. B. Mistry, A. Jawahery, M. S. Alam, S. L. Olsen, M. Hempstead, M. Ogg, Joan A. Guida, J. Kandaswamy, M. Goldberg, G. C. Moneti, P. C. Stein, S. E. Csorna, H. Kagan, R. T. Giles, A. J. Sadoff, K. Kinoshita, Sheldon Stone, M. Ito, S. Holzner, S. Behrends, Paul Tipton, R. Namjoshi, T. Jensen, and D. L. Kreinick

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Theoretical physics, Theoretical models, Higgs boson, B meson
Abstract

We have searched in the decays of the ϒ(1S), ϒ(2S) and B mesons for the narrow state, γ, seen by the Mark II group in radiative ψ decay. We find the product branching fractions B[ϒ(1S) → γγ]·B[γ → K+K−], B[ϒ(2S) → γ γ]· B[γ → K+K−] and B[B → γX]·B[γ → K+K−] to be less than 2×10−4, 9×10−5 and 3×10−3, respectively at 90% confidence level. These limits constrain theoretical models if the γ is interpreted as a Higgs boson.

Published
1984

29. Total cross section for electron-positron annihilation into hadron final states in the upsilon energy region

Author

Ron Poling, Harris Kagan, R. S. Galik, Y. Kubota, P. Avery, M. Hempstead, R. Perchonok, A. Jawahery, Robert Stone, Sheldon Stone, R. D. Kass, Murdock Gilchriese, J. W. Dewire, K. Chadwick, B. Gittelman, G. Rucinski, E. H. Thorndike, R. T. Giles, H. Van Hecke, L. Garren, G. C. Moneti, A. C. Melissinos, F. M. Pipkin, C. Bebek, M. Ogg, T. Gentile, G. Parkhurst, T. Ferguson, P. Skubic, Karl Berkelman, A. J. Sadoff, R. Ehrlich, F. Morrow, P. Lipari, Jan M. Guida, N. Horwitz, Xia Yi, A. Chen, W. W. MacKay, D. Weber, F. Sannes, P. Ganci, D. L. Kreinick, M. Ito, R. G. Hicks, Paul Tipton, J. Hassard, M. S. Alam, D. Peterson, S. L. Olsen, D. Herrup, A. Silverman, R. Plunkett, D. G. Cassel, D. L. Hartill, R. Wilcke, M. Goldberg, E. Nordberg, James C. Green, Richard Wilson, T. Jensen, S. Holzner, S. Behrends, R. Namjoshi, M. D. Mestayer, J. Chauveau, M. Halling, C. G. Trahern, P. Haas, D. Besson, R. S. Panvini, A. Snyder, P. C. Stein, S. E. Csorna, Joan A. Guida, J. Kandaswamy, C. Rosenfeld, K. Kinoshita, and N. B. Mistry

Subjects
Nuclear physics, Physics, Particle physics, Particle decay, Muon, Meson, Electron–positron annihilation, Production (computer science), Continuum (set theory), Cornell Electron Storage Ring, Energy (signal processing)
Abstract

We report measurements made with the CLEO detector at the Cornell Electron Storage Ring (CESR) of the total cross section for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\mathrm{hadrons}$ at the $\ensuremath{\Upsilon}(1S)$, $\ensuremath{\Upsilon}(2S)$, and $\ensuremath{\Upsilon}(3S)$, and in the nearby nonresonant continuum. We find $R=3.77\ifmmode\pm\else\textpm\fi{}0.06 (\mathrm{statistical}) \ifmmode\pm\else\textpm\fi{} 0.24 (\mathrm{systematic})$ for the ratio of the nonresonant hadronic cross section to the cross section for muon-pair production at a center-of-mass total energy $W=10.4$ GeV. For the leptonic decay widths ${\ensuremath{\Gamma}}_{\mathrm{ee}}$ of the $\ensuremath{\Upsilon}(1S)$, $\ensuremath{\Upsilon}(2S)$, and $\ensuremath{\Upsilon}(3S)$ we obtain 1.30\ifmmode\pm\else\textpm\fi{}0.05\ifmmode\pm\else\textpm\fi{}0.08, 0.52\ifmmode\pm\else\textpm\fi{}0.03\ifmmode\pm\else\textpm\fi{}0.04, and 0.42\ifmmode\pm\else\textpm\fi{}0.04\ifmmode\pm\else\textpm\fi{}0.03 keV, respectively.

Published
1984

30. Two-body decays ofBmesons

Author

J. W. Dewire, A. Chen, F. Sannes, K. Chadwick, P. Lipari, C. Bebek, G. Parkhurst, T. Ferguson, M. D. Mestayer, N. Horwitz, Xia Yi, A. Jawahery, D. Peterson, Ron Poling, H. Van Hecke, Robert Stone, G. C. Moneti, M. Hempstead, L. Garren, Joan A. Guida, J. Kandaswamy, P. C. Stein, R. Ehrlich, S. E. Csorna, P. Avery, Karl Berkelman, F. Morrow, T. Jensen, K. Kinoshita, M. S. Alam, M. Ito, A. J. Sadoff, S. L. Olsen, P. Skubic, E. H. Thorndike, N. B. Mistry, F. M. Pipkin, P. Haas, A. Snyder, J. Hassard, A. Silverman, R. T. Giles, R. Namjoshi, M. Ogg, R. D. Kass, Xu Kezun, Richard Wilson, T. Gentile, E. Nordberg, R. Wilcke, Kenneth Francis Read, D. L. Hartill, D. L. Kreinick, Paul Tipton, S. Holzner, S. Behrends, Harris Kagan, James C. Green, Sheldon Stone, W. W. MacKay, A. C. Melissinos, M. E. Hejazifar, M. Goldberg, J. Chauveau, M. Halling, C. G. Trahern, C. Rosenfeld, D. Besson, R. S. Panvini, Jan M. Guida, Murdock Gilchriese, B. Gittelman, R. S. Galik, Y. Kubota, and D. G. Cassel

Subjects
Nuclear physics, Physics, Particle physics, Electron–positron annihilation, B meson, Charm (quantum number)
Published
1984

31. Upper Limits for the Production of Light Short-Lived Neutral Particles in Radiativeϒdecay

Author

D. G. Cassel, C. Rippich, C. R. Sun, R. D. Kass, R. S. Panvini, R. DeSalvo, P. Haas, P. Lubrano, C. Bebek, B. K. Heltsley, Murdock Gilchriese, Y. Kubota, B. Gittelman, I. J. Kim, Kenneth Francis Read, D. Riley, D. L. Hartill, Ron Poling, M. Goldberg, G. C. Moneti, Alice Bean, Thomas Ferguson, S. W. Gray, James Mueller, P. C. Stein, M. D. Mestayer, S. E. Csorna, T. Copie, Joan A. Guida, J. Kandaswamy, M. Hempstead, K. Kinoshita, A. Engler, F. Morrow, Paul Tipton, H. Kagan, I. C. Brock, Jan M. Guida, Themistocles Bowcock, D. Peterson, A. Chen, A. M. Halling, R. T. Giles, L. Garren, M. S. Alam, F. Sannes, R. Ehrlich, Sheldon Stone, D. Perticone, S. Holzner, S. Behrends, Richard Wilson, Paul Avery, T. Jensen, Robert Stone, E. H. Thorndike, A. J. Sadoff, Xia Yi, F. M. Pipkin, R. B. Sutton, J. Hassard, A. Silverman, D. Besson, R. Kowalewski, M. Ogg, G. B. Word, Daniela Bortoletto, R. S. Galik, J. W. Dewire, N. B. Mistry, E. Blucher, M. Ito, R. Namjoshi, R. W. Kraemer, G. J. Bobbink, James C. Green, E. Nordberg, T. Gentile, V. Tanikella, A. Jawahery, M. Pisharody, Karl Berkelman, Hans J. Vogel, N. Katayama, N. Horwitz, D. L. Kreinick, and C. Rosenfeld

Subjects
Nuclear reaction, Nuclear physics, Physics, Particle decay, Particle physics, Pair production, Meson, Branching fraction, General Physics and Astronomy, Elementary particle, Cornell Electron Storage Ring, Particle identification
Abstract

We have searched for the exclusive decay of the UPSILON(1S-italic) into a photon and a short-lived spin-0 particle, a-italic, decaying into e-italic/sup +/e/sup -/, using the CLEO detector at the Cornell electron storage ring. Upper limits for the product branching ratio B-italic(UPSILON(1S-italic)..--> gamma..a-italic) x B-italic(a-italic..-->..e-italic/sup +/e/sup -/) are established for a range of masses, 2m-italic/sub e-italic/

Published
1986

32. Observation of Exclusive Decay Modes ofb-Flavored Mesons

Author

Ron Poling, E. H. Thorndike, F. M. Pipkin, Y. Kubota, V. Kistiakowsky, M. Hempstead, D. Herrup, D. L. Kreinick, J. Rohlf, C. Rosenfeld, Karl Berkelman, D. G. Cassel, J. Chauveau, A. Snyder, M. S. Alam, M. Halling, R. G. Hicks, D. Weber, Richard Wilson, A. J. Sadoff, M. Ogg, R. Wilcke, Murdock Gilchriese, P. Lipari, S. L. Olsen, J. Hassard, A. Silverman, B. Gittelman, L. Garren, R. S. Panvini, D. Peterson, R. Plunkett, K. Chadwick, G. Rucinski, N. Horwitz, R. Galik, R. Perchonok, R. T. Giles, R. Ehrlich, F. Morrow, A. Chen, J. W. Dewire, Jan M. Guida, F. Sannes, Joseph Izen, T. Ferguson, A. Jawahery, P. Avery, S. Holzner, S. Behrends, M. Ito, R. D. Kass, Joan A. Guida, J. Kandaswamy, A. C. Melissinos, D. Andrews, E. Nordberg, M. Jibaly, H. Van Hecke, P. Skubic, G. C. Moneti, Sheldon Stone, D. L. Hartill, N. B. Mistry, C. G. Trahern, James C. Green, P. C. Stein, S. E. Csorna, K. Kinoshita, M. D. Mestayer, Robert Stone, C. Bebek, G. Parkhurst, Harris Kagan, T. Gentile, W. W. MacKay, Richard Talman, P. Ganci, and M. Goldberg

Subjects
Nuclear physics, Physics, Particle decay, Particle physics, Pion, Meson, Electron–positron annihilation, Hadron, General Physics and Astronomy, Invariant mass, Elementary particle, Boson
Abstract

$B$-meson decays to final states consisting of a ${D}^{0}$ or ${D}^{*\ifmmode\pm\else\textpm\fi{}}$ and one or two charged pions have been observed. The charged-$B$ mass is 5270.8 \ifmmode\pm\else\textpm\fi{} 2.3 \ifmmode\pm\else\textpm\fi{} 2.0 MeV and the neutral-$B$ mass is 5274.2 \ifmmode\pm\else\textpm\fi{} 1.9 \ifmmode\pm\else\textpm\fi{} 2.0 MeV.

Published
1983

33. Hyperon Production ine+e−Interactions in the Upsilon Region

Author

Y. Kubota, D. G. Cassel, H. Kagan, D. L. Hartill, Ron Poling, M. Hempstead, M. S. Alam, M. Goldberg, A. J. Sadoff, G. C. Moneti, Murdock Gilchriese, C. Rosenfeld, L. Garren, B. Gittelman, Robert Stone, D. L. Kreinick, Jan M. Guida, D. Weber, R. Wilcke, R. S. Panvini, Paul Tipton, J. W. Dewire, K. Chadwick, R. Ehrlich, P. Avery, F. Morrow, N. Horwitz, D. Besson, J. Hassard, A. Silverman, T. Ferguson, James C. Green, M. D. Mestayer, S. L. Olsen, C. Bebek, G. Parkhurst, A. Jawahery, A. Chen, F. Sannes, J. Chauveau, M. Ito, R. G. Hicks, A. C. Melissinos, H. Van Hecke, M. Halling, E. H. Thorndike, T. Jensen, C. G. Trahern, F. M. Pipkin, M. Ogg, R. T. Giles, Karl Berkelman, Xia Yi, T. Gentile, R. S. Galik, P. Lipari, P. C. Stein, S. E. Csorna, D. Peterson, Richard Wilson, K. Kinoshita, P. Haas, P. Skubic, N. B. Mistry, Joan A. Guida, J. Kandaswamy, A. Snyder, E. Nordberg, R. D. Kass, Sheldon Stone, S. Holzner, S. Behrends, W. W. MacKay, M. E. Hejazifar, and R. Namjoshi

Subjects
Baryon, Nuclear physics, Physics, Particle physics, Annihilation, Meson, Electron–positron annihilation, Hadron, Hyperon, General Physics and Astronomy, Lambda, Gluon
Abstract

We report measurements from CLEO detector of the rate of ..xi.. and ..lambda.. production in e/sup +/e/sup -/ interactions in the upsilon region. Hyperon production from the decay of the UPSILON(1S) is compared with continuum e/sup +/e/sup -/ data. The ratio of the production rates of ..lambda.. (and Lambda-bar) to K/sup 0/ (and K-bar /sup 0/) on the UPSILON(1S) is 0.21 +- 0.03, much larger than in the continuum, 0.07 +- 0.01. The ratios of the production rates of the ..xi.. and the ..lambda.. are comparable, 0.10 +- 0.02 (UPSILON(1S)) and 0.07 +- 0.02 (continuum). We discuss some implications of the data for gluon and quark fragmentation models.

Published
1984

34. Measurement of the Direct Photon Spectrum from theϒ(1S)

Author

D. Riley, T. Copie, R. DeSalvo, Joan A. Guida, J. Kandaswamy, Ian Brock, M. Hempstead, R. Kowalewski, G. C. Moneti, V. Tanikella, N. B. Mistry, C. G. Trahern, C. Bebek, R.B. Sutton, E. Blucher, E. H. Thorndike, B. K. Heltsley, Ron Poling, Kenneth Francis Read, I. J. Kim, F. M. Pipkin, Sheldon Stone, Xia Yi, P. C. Stein, S. E. Csorna, P. Haas, J. Hassard, A. Silverman, Paul Avery, P. Lubrano, T. J. V. Bowcock, A. Jawahery, K. Kinoshita, M. Ogg, Daniela Bortoletto, M. Ito, M. Pisharody, Karl Berkelman, F. Morrow, H. Kagan, Hans J. Vogel, Alice Bean, T. Gentile, J. W. Dewire, M. D. Mestayer, Richard Wilson, N. Horwitz, A. M. Halling, L. Garren, R. T. Giles, Robert Stone, D. L. Hartill, R. Namjoshi, A. J. Sadoff, D. L. Kreinick, D. Peterson, C. Rippich, T. Jensen, R. Kraemer, S. W. Gray, N. Katayama, M. Goldberg, E. Nordberg, G. J. Bobbink, D. Perticone, S. Holzner, S. Behrends, James C. Green, R. Ehrlich, D. Besson, C. Rosenfeld, A. Chen, M. S. Alam, R. D. Kass, F. Sannes, Chih-Ree Sun, James Mueller, Jan M. Guida, Paul Tipton, D. G. Cassel, A. Engler, R. S. Galik, Y. Kubota, Thomas Ferguson, Murdock Gilchriese, B. Gittelman, R. S. Panvini, and G. B. Word

Subjects
Nuclear physics, Physics, Photon, Electron–positron annihilation, Quantum electrodynamics, Spectrum (functional analysis), General Physics and Astronomy
Published
1986

35. Measurement of the Branching Ratio ofϒ(3S)→π+π−ϒ(1S)

Author

R. S. Panvini, E. H. Thorndike, G. Parkhurst, F. M. Pipkin, R. Cabenda, M. D. Mestayer, A. Snyder, N. Horwitz, C. J. Bebek, E. Nordberg, M. Jibaly, H. Van Hecke, C. Rosenfeld, V. Kistiakowsky, M. Ogg, P. Avery, Robert Stone, G. C. Moneti, M. S. Alam, P. Skubic, J. Chauveau, G. Rucinski, D. L. Kreinick, R. Galik, P. C. Stein, J. Kandaswamy, S. E. Csorna, F. Morrow, A. Chen, F. Sannes, R. Ehrlich, S. L. Olsen, D. Herrup, M. Ito, R. Perchonok, K. Chadwick, A. Fridman, H. Jawahery, T. Ferguson, N. B. Mistry, Ron Poling, Sheldon Stone, Richard Wilson, S. Holzner, R. D. Kass, Joseph Izen, R. G. Hicks, J. Rohlf, W. W. MacKay, P. Ganci, M. Hempstead, H. Kagan, J. W. Dewire, A. J. Sadoff, M. Goldberg, D. Weber, J. Hassard, A. Silverman, P. Lipari, R. Plunkett, D. G. Cassel, R. Wilcke, Murdock Gilchriese, B. Gittelman, Y. Kubota, T. Gentile, D. L. Hartill, James C. Green, A. C. Melissinos, and D. Andrews

Subjects
Physics, Particle decay, Pair production, Pion, Meson, Branching fraction, Electron–positron annihilation, Hadron, Mass spectrum, Analytical chemistry, General Physics and Astronomy
Abstract

The branching ratio of UPSILON(3S)..--> pi../sup +/..pi../sup -/UPSILON(1S) has been measured to be (4.9 +- 0.9 +- 0.5)%. The di-pion invariant-mass distribution for this decay is flatter than that for the decays UPSILON(2S)..--> pi../sup +/..pi../sup -/UPSILON(1S) and psi'..--> pi../sup +/..pi../sup -/psi.

Published
1982

36. Evidence for theFMeson at 1970 MeV

Author

J. Chauveau, C. Rosenfeld, Richard Wilson, Karl Berkelman, V. Kistiakowsky, Joan A. Guida, J. Kandaswamy, A. Jawahery, D. G. Cassel, R. S. Panvini, D. L. Hartill, D. L. Kreinick, E. Nordberg, H. Van Hecke, R. Wilcke, N. Horwitz, A. Chen, Murdock Gilchriese, F. Sannes, D. Weber, A. Snyder, P. Skubic, A. J. Sadoff, B. Gittelman, S. L. Olsen, James C. Green, T. Gentile, J. Hassard, A. Silverman, M. D. Mestayer, Xia Yi, R. Plunkett, Ron Poling, E. H. Thorndike, M. Ogg, F. M. Pipkin, P. Lipari, M. S. Alam, H. Halling, D. Peterson, D. Herrup, J. W. Dewire, Y. Kubota, L. Garren, Jan M. Guida, R. G. Hicks, R. Ehrlich, M. Hempstead, P. Avery, Paul Tipton, A. C. Melissinos, N. B. Mistry, R. Perchonok, K. Chadwick, C. G. Trahern, F. Morrow, P. C. Stein, S. E. Csorna, T. Ferguson, K. Kinoshita, R. T. Giles, R. Galik, Harris Kagan, G. C. Moneti, S. Holzner, S. Behrends, W. W. MacKay, R. D. Kass, P. Ganci, Sheldon Stone, M. Goldberg, C. Bebek, G. Parkhurst, M. Ito, Robert Stone, and G. Rucinski

Subjects
Physics, Particle physics, Meson, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, Elementary particle, Nuclear physics, Particle decay, Pion, High Energy Physics::Experiment, Continuum (set theory), Nuclear Experiment
Abstract

Evidence is presented for a narrow meson resonance of mass 1970\ifmmode\pm\else\textpm\fi{}5\ifmmode\pm\else\textpm\fi{}5 MeV produced in continuum ${e}^{+}{e}^{\ensuremath{-}}$ annihilations at $\sqrt{s}$ of 10.5 GeV, and decaying into a $\ensuremath{\phi}$ and a charged $\ensuremath{\pi}$.

Published
1983

37. Observation of the decayB→FX

Author

P. Haas, M. Hempstead, T. Jensen, H. Kagan, R. Kass, S. Behrends, T. Gentile, Jan M. Guida, Joan A. Guida, F. Morrow, R. Poling, C. Rosenfeld, E. H. Thorndike, P. Tipton, J. Green, R. Namjoshi, F. Sannes, R. Stone, M. S. Alam, N. Katayama, I. J. Kim, C. R. Sun, V. Tanikella, D. Bortoletto, A. Chen, L. Garren, M. Goldberg, N. Horwitz, A. Jawahery, P. Lubrano, G. C. Moneti, S. E. Csorna, M. D. Mestayer, R. S. Panvini, G. B. Word, Xia Yi, A. Bean, G. J. Bobbink, I. Brock, A. Engler, T. Ferguson, R. Kraemer, C. Rippich, R. Sutton, H. Vogel, C. Bebek, K. Berkelman, E. Blucher, D. G. Cassel, T. Copie, R. DeSalvo, J. W. DeWire, R. Ehrlich, R. S. Galik, M. G. D. Gilchriese, B. Gittelman, S. W. Gray, A. M. Halling, D. L. Hartill, B. K. Heltsley, S. Holzner, M. Ito, J. Kandaswamy, R. Kowalewski, D. L. Kreinick, Y. Kubota, N. B. Mistry, J. Mueller, E. Nordberg, M. Ogg, D. Peterson, D. Perticone, M. Pisharody, K. Read, D. Riley, A. Silverman, S. Stone, A. J. Sadoff, P. Avery, D. Besson, T. Bowcock, R. T. Giles, J. Hassard, K. Kinoshita, F. M. Pipkin, and Richard Wilson

Subjects
Physics, Nuclear physics, Particle decay, Pion, Meson, Branching fraction, Electron–positron annihilation, Hadron, Mass spectrum, General Physics and Astronomy, B meson
Abstract

We present evidence for inclusive F-italic-meson production in B-italic-meson decay. The product branching fraction B-italic(B-italic..-->..F-italicX-italic)B-italic(F-italic/sup +/..-->..phi..pi../sup +/) is measured to be 0.0038 +- 0.010. The F-italic momentum spectrum indicates the presence of a large component of two-body final states in the decay B-italic..-->..F-italicX-italic.

Published
1986

38. D0Spectrum fromB-Meson Decay

Author

Robert Stone, Xia Yi, D. G. Cassel, C. G. Trahern, P. C. Stein, S. E. Csorna, N. Horwitz, H. Kagan, J. Chauveau, K. Kinoshita, S. L. Olsen, M. Halling, R. Plunkett, E. H. Thorndike, A. Jawahery, F. M. Pipkin, D. Weber, A. J. Sadoff, J. Hassard, Ron Poling, Y. Kubota, C. Bebek, G. Parkhurst, A. Snyder, A. Silverman, Karl Berkelman, A. C. Melissinos, Jan M. Guida, A. Chen, L. Garren, F. Sannes, K. Chadwick, M. Hempstead, D. Herrup, D. L. Kreinick, D. Andrews, S. Holzner, S. Behrends, R. Ehrlich, M. Ogg, P. Skubic, C. Rosenfeld, M. Ito, M. S. Alam, T. Ferguson, M. D. Mestayer, R. Wilcke, Murdock Gilchriese, P. Lipari, P. Avery, R. S. Panvini, B. Gittelman, R. Perchonok, R. Galik, D. Peterson, N. B. Mistry, E. Nordberg, M. Jibaly, H. Van Hecke, Joan A. Guida, D. L. Hartill, J. Kandaswamy, F. Morrow, V. Kistiakowsky, R. D. Kass, R. G. Hicks, James C. Green, G. Rucinski, T. Gentile, Sheldon Stone, R. T. Giles, G. C. Moneti, J. W. Dewire, M. Goldberg, W. W. MacKay, P. Ganci, and Richard Wilson

Subjects
Physics, Quark, Semileptonic decay, Meson, Branching fraction, High Energy Physics::Lattice, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, General Physics and Astronomy, Nuclear physics, Particle decay, Pion, High Energy Physics::Experiment, B meson, Nuclear Experiment
Abstract

The inclusive branching fraction for B-meson decay into D/sup 0/ mesons and the momentum spectrum of the D/sup 0/'s have been measured. 0.8 +- 0.2 +- 0.2 D/sup 0/ per B decay was found. The shape of the spectrum suggests an interesting picture of B-meson decay.

Published
1983

39. DecayB→ψX

Author

P. Haas, M. Hempstead, T. Jensen, H. Kagan, R. Kass, S. Behrends, T. Gentile, Jan M. Guida, Joan A. Guida, F. Morrow, R. Poling, C. Rosenfeld, E. H. Thorndike, P. Tipton, D. Besson, J. Green, R. Namjoshi, F. Sannes, P. Skubic, R. Stone, D. Bortoletto, A. Chen, M. Goldberg, N. Horwitz, A. Jawahery, P. Lubrano, G. C. Moneti, C. G. Trahern, H. van Hecke, S. E. Csorna, L. Garren, M. D. Mestayer, R. S. Panvini, G. B. Word, Xia Yi, M. S. Alam, A. Bean, T. Ferguson, P. Avery, C. Bebek, K. Berkelman, E. Blucher, D. G. Cassel, T. Copie, R. DeSalvo, J. W. DeWire, R. Ehrlich, R. S. Galik, M. G. D. Gilchriese, B. Gittelman, S. W. Gray, A. M. Halling, D. L. Hartill, B. K. Heltsley, S. Holzner, M. Ito, J. Kandaswamy, D. L. Kreinick, Y. Kubota, N. B. Mistry, E. Nordberg, M. Ogg, D. Peterson, D. Perticone, M. Pisharody, K. Read, A. Silverman, P. C. Stein, S. Stone, Xu Kezun, A. J. Sadoff, T. Bowcock, R. T. Giles, J. Hassard, K. Kinoshita, F. M. Pipkin, and Richard Wilson

Subjects
Physics, Muon, Meson, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, Nuclear physics, Pair production, High Energy Physics::Experiment, B meson, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, Astrophysics::Galaxy Astrophysics, Lepton
Abstract

We have measured the inclusive branching ratio for B..-->..psiX to be (1.10 +- 0.21 +- 0.23)%. The momentum distribution of the psi mesons suggests a significant fraction of two-body decays.

Published
1985

40. Search for magnetically charged particles produced ine+e−annihilations at√s =10.6GeV

Author

V. Tanikella, R. S. Galik, R. DeSalvo, Y. Kubota, Joan A. Guida, J. Kandaswamy, R. W. Kraemer, G. C. Moneti, Xia Yi, D. Peterson, H. Kagan, T. Jensen, L. Garren, I. J. Kim, S. E. Csorna, K. Kinoshita, A. M. Halling, Murdock Gilchriese, M. Pisharody, A. Jawahery, B. Gittelman, D. Xiao, M. S. Alam, Karl Berkelman, D. L. Kreinick, Jan M. Guida, N. Horwitz, M. Goldberg, G. B. Word, E. Nordberg, Ian Brock, R. Kowalewski, Paul Tipton, James Mueller, Themistocles Bowcock, F. Morrow, P. Haas, E. H. Thorndike, D. G. Cassel, E. Blucher, A. Chen, F. M. Pipkin, N. B. Mistry, Sheldon Stone, A. J. Sadoff, M. Ito, T. Gentile, V. Sharma, Paul Avery, R. Namjoshi, D. L. Hartill, R. Ehrlich, P. Lubrano, M. D. Mestayer, J. Hassard, Hans J. Vogel, A. Silverman, R. Holmes, J. Wolinski, B. K. Heltsley, N. Katayama, Kenneth Francis Read, Thomas Ferguson, Alice Bean, C. Bebek, C. Rippich, R. S. Panvini, G. J. Bobbink, T. Copie, M. Ogg, R. T. Giles, Ron Poling, A. Engler, R. D. Kass, D. Perticone, S. Holzner, S. Behrends, Richard Wilson, Chih-Ree Sun, D. Riley, M. Hempstead, S. W. Gray, Daniela Bortoletto, J. W. Dewire, and D. Besson

Subjects
Nuclear physics, Physics, Particle physics, Annihilation, Spectrometer, High Energy Physics::Experiment, Elementary particle, Cornell Electron Storage Ring, Tracking (particle physics), Charged particle, Particle identification, Magnetic field
Abstract

Energetic particles carrying magnetic charge can be identified by their trajectory in a magnetic field. We report here the first application of this property to a search in e/sup +/e/sup -/ annihilations. By tracking the paths of particles in the CLEO magnetic spectrometer at the Cornell Electron Storage Ring we place upper limits on the production of magnetically charged particles with mass m

Published
1987

41. Inclusive Decay ofBMesons into ChargedD*

Author

P. Avery, J. W. Dewire, T. Copie, D. L. Kreinick, C. Bebek, G. Parkhurst, Harris Kagan, W. W. MacKay, E. Nordberg, Xu Kezun, R. T. Giles, J. Hassard, Richard Wilson, Robert Stone, L. Garren, M. D. Mestayer, A. Silverman, D. G. Cassel, T. Jensen, R. Ehrlich, R. D. Kass, A. Chen, M. Ogg, Joan A. Guida, F. Morrow, J. Kandaswamy, F. Sannes, P. Skubic, R. S. Galik, M. S. Alam, T. Ferguson, Y. Kubota, T. Gentile, Kenneth Francis Read, A. Jawahery, Jan M. Guida, Murdock Gilchriese, B. Gittelman, E. H. Thorndike, Sheldon Stone, M. Goldberg, N. B. Mistry, N. Horwitz, F. M. Pipkin, Paul Tipton, P. Haas, H. Van Hecke, Karl Berkelman, P. C. Stein, S. E. Csorna, K. Kinoshita, D. Peterson, M. Halling, R. Namjoshi, C. G. Trahern, D. Perticone, S. Holzner, S. Behrends, M. Ito, R. DeSalvo, G. C. Moneti, D. L. Hartill, C. Rosenfeld, D. Besson, R. S. Panvini, James C. Green, A. J. Sadoff, Ron Poling, M. Hempstead, and Xia Yi

Subjects
Physics, Particle physics, General Physics and Astronomy, B meson
Published
1985

42. Measurement of the Branching Fraction of the Decayϒ(1S)→τ+τ−

Author

P. Skubic, A. Snyder, T. Gentile, N. B. Mistry, Joan A. Guida, J. Kandaswamy, L. Garren, F. Morrow, Ron Poling, J. Chauveau, E. Nordberg, M. Jibaly, E. H. Thorndike, Robert Stone, H. Van Hecke, V. Kistiakowsky, R. Galik, S. Holzner, S. Behrends, J. W. Dewire, Richard Wilson, F. M. Pipkin, D. L. Kreinick, R. Ehrlich, M. Hempstead, M. Halling, P. Lipari, H. Kagan, A. Chen, P. Avery, D. Peterson, F. Sannes, M. S. Alam, G. Rucinski, A. J. Sadoff, D. Weber, C. Bebek, G. Parkhurst, C. Rosenfeld, J. Hassard, A. Silverman, M. Ogg, R. G. Hicks, R. D. Kass, Joseph Izen, R. T. Giles, K. Chadwick, R. S. Panvini, T. Ferguson, A. Jawahery, R. Perchonok, C. G. Trahern, S. L. Olsen, Sheldon Stone, R. Plunkett, P. C. Stein, S. E. Csorna, K. Kinoshita, A. C. Melissinos, D. Herrup, D. Andrews, D. G. Cassel, M. D. Mestayer, M. Ito, M. Goldberg, D. L. Hartill, James C. Green, J. Rohlf, W. W. MacKay, P. Ganci, G. C. Moneti, Jan M. Guida, Y. Kubota, R. Wilcke, Murdock Gilchriese, B. Gittelman, Karl Berkelman, and N. Horwitz

Subjects
Physics, Particle physics, Muon, Meson, Branching fraction, Hadron, General Physics and Astronomy, Elementary particle, Astrophysics::Cosmology and Extragalactic Astrophysics, Fermion, Particle decay, High Energy Physics::Experiment, Astrophysics::Galaxy Astrophysics, Lepton
Abstract

The branching fraction for the decay of the UPSILON(1S) into tau pairs has been measured to be 3.4 +- 0.4 +- 0.4%. This result agrees with the previously measured branching ratio of the decay into muon pairs.

Published
1983

43. Inclusive ChargedD*Production ine+e−Annihilations atW=10.4GeV

Author

H. Kagan, C. Rosenfeld, Robert Stone, A. J. Sadoff, R. Galik, J. Kandaswamy, Y. Kubota, J. Chauveau, T. Gentile, J. W. Dewire, R. Perchonok, A. Fridman, Ron Poling, S. Holzner, P. Skubic, R. Cabenda, G. Parkhurst, D. Weber, M. Hempstead, N. B. Mistry, P. Lipari, A. Snyder, F. Morrow, R. Plunkett, R. S. Panvini, R. Ehrlich, J. Hassard, A. Silverman, A. Chen, P. Avery, R. D. Kass, D. Herrup, V. Kistiakowsky, P. C. Stein, S. E. Csorna, R. G. Hicks, F. Sannes, M. S. Alam, D. G. Cassell, E. Nordberg, G. Rucinski, M. Jibaly, H. Van Hecke, D. L. Kreinick, S. L. Olsen, J. Rohlf, M. D. Mestayer, C. J. Bebek, M. Goldberg, G. C. Moneti, M. Ogg, Sheldon Stone, E. H. Thorndike, W. W. MacKay, F. M. Pipkin, P. Ganci, A. C. Melissinos, R. Wilcke, H. Jawahery, Murdock Gilchriese, B. Gittelman, Joseph Izen, M. Ito, Richard Wilson, D. L. Hartill, James C. Green, D. Andrews, K. Chadwick, T. Ferguson, and N. Horwitz

Subjects
Physics, Nuclear physics, Particle physics, Particle decay, Annihilation, Meson, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Electron–positron annihilation, Hadron, General Physics and Astronomy, Elementary particle, Boson, Charm quark
Abstract

A measurement is presented of inclusive charged D* (2010) production from nonresonant e/sup +/e/sup -/ annihilation in the center-of-mass energy (W) range 10.2 GeV..D/sup 0/..pi../sup +/..-->..K/sup -/..pi../sup +/..pi../sup +/ and the charge conjugate mode. It is found that 40 +- 7 +- 13% of the charm quarks from the process e/sup +/e/sup -/..-->..cc-bar result in D* mesons with z>0.7 (z = 2E/W, where E is the D* energy).

Published
1982

44. Inclusiveφproduction inB-meson decay

Author

I. J. Kim, T. Copie, Ron Poling, R. S. Galik, Y. Kubota, Jan M. Guida, M. Goldberg, D. Perticone, S. Holzner, S. Behrends, H. Kagan, C. Bebek, R. T. Giles, P. Skubic, Themistocles Bowcock, D. G. Cassel, A. Chen, E. H. Thorndike, A. Jawahery, H. Van Hecke, F. Sannes, P. Avery, C. G. Trahern, P. C. Stein, R. Kowalewski, F. M. Pipkin, P. Haas, D. L. Kreinick, S. E. Csorna, Daniela Bortoletto, T. Jensen, A. J. Sadoff, M. Pisharody, Thomas Ferguson, E. Blucher, Sheldon Stone, M. Ito, Karl Berkelman, K. Kinoshita, Murdock Gilchriese, R. Namjoshi, J. Hassard, A. Silverman, Paul Tipton, J. W. Dewire, N. B. Mistry, C. Rosenfeld, S. W. Gray, N. Horwitz, L. Garren, N. Katayama, B. Gittelman, R. DeSalvo, A. M. Halling, D. Riley, G. B. Word, G. C. Moneti, P. Lubrano, Robert Stone, Joan A. Guida, J. Kandaswamy, M. Ogg, D. Besson, R. S. Panvini, M. Hempstead, Alice Bean, Chih-Ree Sun, R. D. Kass, M. D. Mestayer, Richard Wilson, E. Nordberg, F. Morrow, D. Peterson, M. S. Alam, T. Gentile, V. Tanikella, Xia Yi, R. Ehrlich, James Mueller, D. L. Hartill, James C. Green, B. K. Heltsley, and Kenneth Francis Read

Subjects
Physics, Particle physics, Annihilation, Meson, Branching fraction, Hadron, General Physics and Astronomy, Elementary particle, Nuclear physics, Particle decay, Pair production, High Energy Physics::Experiment, B meson, Astrophysics::Earth and Planetary Astrophysics
Abstract

We have measured the inclusive branching ratio for B..-->..phiX to be 0.023 +- 0.006 +- 0.005. The momentum distribution of the phi mesons is compared with that expected from the cascade decays B..-->..F..-->..phi and B..-->..D..-->..phi. .AE

Published
1986

45. Observation of New Structure in thee+e−Cross Section above theϒ(4S)

Author

R. D. Kass, C. Bebek, G. Parkhurst, A. Jawahery, T. Jensen, P. Lipari, M. S. Alam, Joan A. Guida, D. L. Kreinick, J. Kandaswamy, P. Skubic, M. Ito, Robert Stone, D. G. Cassel, Murdock Gilchriese, R. T. Giles, L. Garren, R. DeSalvo, D. Peterson, Sheldon Stone, B. Gittelman, D. Perticone, S. Holzner, S. Behrends, K. Chadwick, Richard Wilson, James C. Green, T. Gentile, R. Ehrlich, Xu Kezun, J. W. Dewire, H. Van Hecke, T. Ferguson, P. Haas, C. Rosenfeld, Karl Berkelman, R. S. Panvini, A. Chen, Kenneth Francis Read, M. Ogg, J. Hassard, N. B. Mistry, Jan M. Guida, A. Silverman, F. Sannes, M. D. Mestayer, Xia Yi, A. Snyder, Y. Kubota, W. W. MacKay, P. Avery, D. Besson, N. Horwitz, T. Copie, A. C. Melissinos, M. Goldberg, G. C. Moneti, Paul Tipton, E. Nordberg, R. Namjoshi, M. Halling, C. G. Trahern, F. Morrow, P. C. Stein, S. E. Csorna, K. Kinoshita, S. L. Olsen, D. L. Hartill, Ron Poling, E. H. Thorndike, F. M. Pipkin, R. S. Galik, M. Hempstead, H. Kagan, and A. J. Sadoff

Subjects
Nuclear physics, Physics, Particle decay, Particle physics, Annihilation, Meson, Electron–positron annihilation, Hadron, General Physics and Astronomy, Multiplicity (mathematics), Elementary particle, Lepton
Abstract

Measurements of the ${e}^{+}{e}^{\ensuremath{-}}$ cross section above $B\overline{B}$ threshold are reported. Structures are observed which could be the $\ensuremath{\Upsilon}(5S)$ and $\ensuremath{\Upsilon}(6S)$ resonances. The masses and widths are given and compared with various potential-model predictions. Average charged multiplicities and inclusive lepton yields are also presented.

Published
1985

46. Upper Limit on Flavor-Changing Neutral-Current Decays of thebQuark

Author

D. L. Hartill, E. H. Thorndike, D. Weber, J. Hassard, A. Silverman, F. M. Pipkin, M. S. Alam, P. Haas, Murdock Gilchriese, Paul Tipton, T. Jensen, C. Bebek, G. Parkhurst, C. G. Trahern, James C. Green, B. Gittelman, P. C. Stein, Joan A. Guida, J. Kandaswamy, M. D. Mestayer, S. E. Csorna, P. Avery, K. Chadwick, M. Goldberg, D. G. Cassel, H. Van Hecke, Richard Wilson, P. Lipari, K. Kinoshita, S. Holzner, S. Behrends, D. Peterson, T. Ferguson, S. L. Olsen, W. W. MacKay, Karl Berkelman, A. Jawahery, M. Ito, E. Nordberg, M. E. Hejazifar, P. Skubic, A. Snyder, T. Gentile, G. C. Moneti, Robert Stone, R. Namjoshi, J. W. Dewire, N. Horwitz, Harris Kagan, D. L. Kreinick, R. S. Galik, Y. Kubota, R. T. Giles, A. Chen, F. Sannes, Sheldon Stone, N. B. Mistry, R. D. Kass, Jan M. Guida, R. Wilcke, Ron Poling, R. G. Hicks, A. C. Melissinos, M. Hempstead, J. Chauveau, M. Halling, A. J. Sadoff, C. Rosenfeld, M. Ogg, L. Garren, F. Morrow, D. Besson, R. S. Panvini, R. Ehrlich, and Xia Yi

Subjects
Quark, Semileptonic decay, Nuclear physics, Physics, Particle physics, Meson, Branching fraction, Flavor-changing neutral current, Quark model, General Physics and Astronomy, B meson, Bottom quark
Abstract

We have searched for flavor-changing neutral-current weak decays of the b quark and find R/sub B/(b..-->..l/sup +/l/sup -/X)

Published
1984

47. DecayD0→φK¯0

Author

L. Garren, P. Lubrano, A. Jawahery, D. Besson, Alice Bean, R. DeSalvo, Joan A. Guida, J. Kandaswamy, M. Ito, A. M. Halling, E. Nordberg, R. T. Giles, Robert Stone, Themistocles Bowcock, E. H. Thorndike, C. Rippich, Murdock Gilchriese, A. Chen, D. Peterson, C. R. Sun, F. Sannes, F. M. Pipkin, T. Jensen, R. S. Galik, R. Namjoshi, S. W. Gray, R. B. Sutton, V. Tanikella, C. Bebek, P. C. Stein, S. E. Csorna, K. Kinoshita, R. W. Kraemer, J. Hassard, A. Silverman, Daniela Bortoletto, J. W. Dewire, B. Gittelman, I. J. Kim, M. S. Alam, R. S. Panvini, R. D. Kass, Sheldon Stone, R. Kowalewski, N. B. Mistry, M. Pisharody, Karl Berkelman, D. Perticone, S. Holzner, S. Behrends, James C. Green, Paul Avery, E. Blucher, Richard Wilson, T. Copie, M. D. Mestayer, D. L. Kreinick, D. G. Cassel, N. Horwitz, Y. Kubota, Hans J. Vogel, D. Riley, A. Engler, F. Morrow, Paul Tipton, T. Gentile, N. Katayama, M. Hempstead, I. C. Brock, P. Haas, C. Rosenfeld, Thomas Ferguson, B. K. Heltsley, Kenneth Francis Read, Jan M. Guida, D. L. Hartill, Ron Poling, H. Kagan, A. J. Sadoff, R. Ehrlich, Xia Yi, G. J. Bobbink, G. B. Word, James Mueller, M. Ogg, M. Goldberg, and G. C. Moneti

Subjects
General Physics and Astronomy
Published
1986

48. Measurement of the D0, D+ and Ds+ meson lifetimes at √s = 10.58 GeV

Author

L. Garren, M. S. Alam, G. B. Word, D. Riley, A. M. Halling, D. Xiao, C. Bebek, D. L. Kreinick, D. Besson, T. Jensen, F. Morrow, A. Jawahery, S. E. Csorna, M. Hempstead, E. H. Thorndike, D. Perticone, S. Holzner, S. Behrends, G. J. Bobbink, F. M. Pipkin, K. Kinoshita, Hans J. Vogel, I. C. Brock, H. Kagan, M. Goldberg, Themistocles Bowcock, N. Katayama, V. Sharma, G. C. Moneti, M. D. Mestayer, A. Chen, R. Kowalewski, R. Ehrlich, M. Ito, R. S. Galik, R. S. Panvini, Daniela Bortoletto, R. DeSalvo, T. Gentile, J. W. Dewire, B. K. Heltsley, C. Rippich, Kenneth Francis Read, Sheldon Stone, Paul Avery, S. W. Gray, N. B. Mistry, A. J. Sadoff, Paul Tipton, P. Haas, M. Ogg, Richard Wilson, E. Nordberg, D. L. Hartill, Ron Poling, V. Tanikella, James Mueller, Joan A. Guida, J. Kandaswamy, C. R. Sun, D. Peterson, R. D. Kass, Xia Yi, J. Wolinski, R. W. Kraemer, Jan M. Guida, J. Hassard, A. Silverman, N. Horwitz, T. Copie, A. Engler, Thomas Ferguson, Y. Kubota, M. Pisharody, Karl Berkelman, Murdock Gilchriese, D. G. Cassel, B. Gittelman, I. J. Kim, E. Blucher, R. Namjoshi, P. Lubrano, R. Holmes, Alice Bean, and R. T. Giles

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Antiparticle, Particle decay, Annihilation, Pion, Pair production, Meson, Antimatter, Hadron
Abstract

We have measured the lifetimes of the D0, D+ and Ds+ mesons with data from the CLEO detector. We find τD0 = (5.0 ± 0.7 ± 0.4) × 10−13s, τD+ = (11.4 ± 1.6 ± 0.7) × 10−13s and τDs+ = (4.7 ± 2.2 ± 0.5) × 10−13s, giving lifetime ratios τD+/τD0 = 2.3 ± 0.5 and τDs+/τD0 = 0.9 ± 0.5.

Published
1987

49. Observation of Radiative Decays of theϒ(2S)

Author

H. Kagan, F. Morrow, D. Weber, J. Hassard, A. Silverman, R. D. Kass, A. Chen, F. Sannes, C. Bebek, G. Parkhurst, A. J. Sadoff, Richard Wilson, L. Garren, W. W. MacKay, C. Rosenfeld, Y. Kubota, R. Wilcke, R. Ehrlich, P. Skubic, T. Jensen, M. S. Alam, Jan M. Guida, H. Van Hecke, Robert Stone, Xia Yi, R. T. Giles, D. Besson, Murdock Gilchriese, R. Namjoshi, D. L. Hartill, E. H. Thorndike, Ron Poling, B. Gittelman, T. Gentile, A. Jawahery, R. G. Hicks, F. M. Pipkin, J. Chauveau, P. Lipari, D. G. Cassel, D. Peterson, D. L. Kreinick, S. Holzner, S. Behrends, M. Halling, C. G. Trahern, M. Hempstead, Karl Berkelman, M. Ogg, M. D. Mestayer, M. Ito, R. S. Panvini, K. Chadwick, Paul Tipton, Joan A. Guida, P. Avery, J. Kandaswamy, R. S. Galik, N. Horwitz, S. L. Olsen, M. Goldberg, T. Ferguson, G. C. Moneti, James C. Green, A. C. Melissinos, E. Nordberg, A. Snyder, P. Haas, N. B. Mistry, Sheldon Stone, P. C. Stein, S. E. Csorna, J. W. Dewire, and K. Kinoshita

Subjects
Physics, Nuclear physics, Massless particle, Photon, Meson, Branching fraction, Hadron, Radiative transfer, General Physics and Astronomy, High Energy Physics::Experiment, Elementary particle, Atomic physics, Spectral line
Abstract

Evidence is reported from the CLEO detector for the chi/sub b/(1P) states from radiative decays of the UPSILON(2S). Photons are detected by pair conversion in the beam pipe or a lead radiator, and the pair momenta are measured in the drift chamber. Two photon lines are well resolved, with energies 109.5 +- 0.7 +- 1 and 129.0 +- 0.8 +- 1 MeV.

Published
1984

50. Observation of Baryons inB-Meson Decay

Author

G. Parkhurst, Richard Wilson, D. G. Cassel, M. S. Alam, C. Rosenfeld, A. Chen, Harris Kagan, E. H. Thorndike, D. L. Kreinick, F. Sannes, J. W. Dewire, F. M. Pipkin, J. Chauveau, Y. Kubota, Robert Stone, S. Holzner, S. Behrends, W. W. MacKay, M. Halling, P. Ganci, R. Wilcke, Jan M. Guida, D. Herrup, Murdock Gilchriese, B. Gittelman, Sheldon Stone, Ron Poling, Paul Tipton, P. Lipari, T. Gentile, R. T. Giles, D. Peterson, G. C. Moneti, L. Garren, P. Skubic, M. Hempstead, M. D. Mestayer, M. Goldberg, V. Kistiakowsky, R. S. Panvini, R. Ehrlich, N. B. Mistry, P. Avery, D. Weber, A. Snyder, A. J. Sadoff, Xia Yi, S. L. Olsen, E. Nordberg, H. Van Hecke, J. Hassard, A. Silverman, R. D. Kass, R. Plunkett, A. Jawahery, Joan A. Guida, R. Perchonok, J. Kandaswamy, M. Ito, K. Chadwick, M. Ogg, T. Ferguson, F. Morrow, R. Galik, D. L. Hartill, James C. Green, R. G. Hicks, A. C. Melissinos, C. G. Trahern, P. C. Stein, S. E. Csorna, K. Kinoshita, G. Rucinski, N. Horwitz, Karl Berkelman, and C. Bebek

Subjects
Physics, Quark, Particle physics, Meson, Branching fraction, Nuclear Theory, Hadron, General Physics and Astronomy, Nuclear physics, Particle decay, Physics::Accelerator Physics, High Energy Physics::Experiment, B meson, Cornell Electron Storage Ring, Nuclear Experiment, Nucleon
Abstract

In a sample of B mesons from the decay of the UPSILON(4S) produced in e/sup +/e/sup -/ collisions at the Cornell Electron Storage Ring, inclusive protons, antiprotons, lambdas and antilambdas have been observed. Lower limits to the B-to-baryon branching ratios are derived.

Published
1983

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