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3. Domain structures of ferroelectric films under different electrical boundary conditions

Author

Z. D. Zhou and D. Y. Wu

Subjects
Physics, QC1-999
Abstract

A two-dimensional phase field simulation of ferroelectric films is used that incorporates Landau-Devonshire energy, gradient energy and depolarization electrical energy. A new intermediate electrical boundary condition is firstly presented to study the effects on domain structures of ferroelectric films. Two-dimensional simulations of domain structures are carried out under the open circuit (OC), short circuit (SC) and intermediate (IM) electrical boundary conditions. The simulation results show that there are multi-vortices domains and 180° multi-stripes domains under OC and SC electrical boundary condition, respectively. And there is a transition from multi-vortices domains to 180° multi-stripes domains under the IM electrical boundary condition due to competition between the elastic energy and depolarization electrical energy in the films. The present IM electrical boundary condition can completely characterize different degrees of compensation for surface charges by the electrodes and further describe the effect on the depolarization electrical energy. It can also be reduced to OC and SC electrical boundary conditions. Hence, for nano-thin ferroelectric films, the IM electrical boundary condition plays an important role in the formation of domain structures.

Published
2015
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4. [Subcutaneous sparganosis: a case report]

Author

D Y, Wu, D J, Tang, Y, Zhang, B L, He, Y, Wang, and R J, Tan

Subjects
Sparganosis, Humans
Abstract

This case report presents the diagnosis and treatment of a case with subcutaneous sparganosis.

Published
2021

7. Research on the Mechanical Properties and Segregation Behavior of Pb-Al Alloys

Author

Wei Shen, Zhen Lin Liu, Yong Liang Li, Zhi Cheng Lu, Fu Ming Wang, and D. Y. Wu

Subjects
Materials science, Mechanics of Materials, Mechanical Engineering, Metallurgy, 020101 civil engineering, General Materials Science, 02 engineering and technology, 021001 nanoscience & nanotechnology, 0210 nano-technology, Microstructure, 0201 civil engineering
Abstract

In this paper, the effect of Al content on the recrystallization behavior and mechanical properties of Pb-Al alloys were studied. The segregation behavior of Al in Pb-Al alloy was investigated. Moreover, the microstructures and precipitates of the alloys were also studied. The results show that the addition of Al can affect the recrystallization behavior of lead and improve its tensile strength. The recrystallization grains are effectively refined with the addition of 0.05%Al and the tensile strength increases obviously. However, the Al-rich phase grows significantly and its refinement effect is reduced with further increasing the Al content, thus, the tensile strength decreases. The mechanical stirring can effectively decrease the segregation degree of Al in Pb-Al alloys, but the yield of Al reduces. After the mechanical stirring, the sizes of Al phases decrease and theirs distribution is more uniform.

Published
2018
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9. Direct Deembedding of Noise Factors for On-Wafer Noise Measurement

Author

Xuesong Chen, D. Y. Wu, D.C. Chen, Chih-Hung Chen, and Ryan Lee

Subjects
Engineering, Noise temperature, Radiation, Noise measurement, business.industry, Electrical engineering, 020206 networking & telecommunications, Y-factor, 02 engineering and technology, Condensed Matter Physics, Noise figure, 01 natural sciences, Low-noise amplifier, 010305 fluids & plasmas, Noise, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Scattering parameters, Flicker noise, Electrical and Electronic Engineering, business
Abstract

This paper extends the noise theory of linear networks to enable direct deembedding of noise factors for an active device surrounded by a passive four-port. It solves the problem of noise factor deembedding, when there are feedback paths between the output and input of a device-under-test. It also leads to a new approach to obtain intrinsic noise parameters for on-wafer noise measurements by performing deembedding first and optimization last. Verification of the noise factor deembedding algorithm is performed using idealized data, and the evaluation of the new noise parameter deembedding approach is conducted using the experimental data of the n-type MOSFETs fabricated in 28- and 90-nm CMOS technology from United Microelectronics Corporation.

Published
2017
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10. Effect of Temperature on Oxidation Behavior of Cr–Mo–V Steel with Different Cr Contents for High-Speed Train Brake Discs

Author

Fuming Wang, Changrong Li, Yaxu Zheng, Wei Shen, and D. Y. Wu

Subjects
Materials science, Parabolic law, Oxide, chemistry.chemical_element, High speed train, law.invention, Chromium, chemistry.chemical_compound, chemistry, law, Brake, Disc brake, Composite material, Oxidation resistance, Layer (electronics)
Abstract

In order to improve the oxidation resistance of Cr–Mo–V steel for high-speed railway brake discs, a higher Cr was added to the steel. Effect of temperature on the oxidation behavior of brake disc steel with different Cr contents was studied by OM, SEM and XRD. The results show that the oxidation curves at 500 °C obey a linear oxidation law in 0–2 h and 2–20 h, respectively. The oxide layer is thin and the oxidation products are Fe2O3 and Fe3O4. The oxidation curve at 700 °C follows a linear law within 2 h. With the oxidation time extending, the oxidation curves follow a parabolic law and the oxide layer becomes thicker. Moreover, the oxide layer is divided into two layers. The outer oxide layer is loose and is mainly Fe2O3, while the inner layer is denser and consists of FeO and FeCr2O4. The oxide layer thickness reduces and the oxidation resistance of the steel is improved with Cr content is increased.

Published
2018
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11. The Effect of Austenitizing Temperature on Hardenability, Precipitation and Mechanical Properties of Boron Bearing Cr–Mo Alloy Steel

Author

Changrong Li, Xi Chen, Yaxu Zheng, Shuai Liu, D. Y. Wu, and Fuming Wang

Subjects
Austenite, Toughness, Materials science, Precipitation (chemistry), Ferrite (iron), Alloy steel, Metallurgy, engineering, Grain boundary, Tempering, engineering.material, Hardenability
Abstract

The effects of B content and austenitizing temperature on hardenability and toughness of Cr–Mo alloy steel have been studied. The results show that the hardenability is deteriorated with increasing B content and austenitizing temperature. With increasing temperature, more and more B containing particles were dissolved in austenite and increase the amount of B atoms segregating at grain boundaries. Moreover, the coarsening grains reduce area of grain boundaries and also increase the amount of B atoms at unit grain boundary, excessive B atoms segregating at grain boundaries promotes precipitation of M2B, which accelerates ferrite nucleation and reduces hardenability. The main elements in M2B phase are Fe, Cr, Mo and B. The B atoms segregating at grain boundaries during austenitizing promote precipitation of M2B during tempering which deteriorate toughness significantly.

Published
2018
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12. Ptimization of Co-immobilization of Cellulase and β-glucosidase

Author

G. X. Su, Y. Z. Jin, M. Z. Zhuang, D. Y. Wu, H. Y. Fu, and P. F. Gao

Subjects
biology, Chemistry, biology.protein, Co immobilization, Cellulase, β glucosidase, Nuclear chemistry
Abstract

Cellulase can hydrolyze cellulose to produce reducing sugars such as cellobiose and cellotriose. β-glucosidas can further hydrolyze cellobiose and cellobiose produced by cellulase to produce glucose. According to the hydrolysis mechanisms of cellulase and β-glucosidas, we selected two enzyems, cellulase and β-glucosidase to study optimization of co-immobilization of cellulase and β-glucosidas. Meanwhile, we selected two materials, activated carbon and sodium alginate to co-immobilize cellulase and β-glucosidas by the immobilization method of embedding-adsorption. The immobilization conditions, alginate, CaCl2 and activated carbon was optimized. The results showed that the optimum concentrations of sodium alginate and CaCl2 were 2% and 2%, respectively, and the quality of activated carbon is 0.15 g. The optimal ratio of cellulase to β - glucosidase was 1:1.5. The results indicated that cellulase and β-glucosidase had a synergistic effect and that their compound degradation of cellulose was better than the separate effects of the two enzymes acting independently.

Published
2020
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13. Modelling of high-speed railway traction power supply systems based on subspace identification

Author

L. Ma, D. Y. Wu, and S. K. Cheng

Subjects
History, State variable, Traction power network, Identification (information), Dimension (vector space), Mathematical model, Control theory, Computer science, Representation (mathematics), Fault (power engineering), Subspace topology, Computer Science Applications, Education
Abstract

In this paper, reduced mathematical models for high-speed railway traction power systems based on subspace identification method (SIM) are proposed. SIM applies reliable algebra tools to estimate state variables, and then provides an analytic representation for the identified systems, especially those of large dimension. Accuracy for identification results of different orders is discussed, under both normal operation and fault cases. With appropriate accuracy-simplicity trade-off, a uniform order decision is deduced. Reduced models derived from identification could be used for further studies of network-side impact on train-network coupling problems.

Published
2020
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15. Effect of silicon on recrystallisation of V–Ti microalloyed steel

Author

W. B. Fan, F. R. Xiao, D. Y. Wu, Y. L. Gong, J. P. Pei, and B. Liao

Subjects
Materials science, Silicon, Precipitation (chemistry), Mechanical Engineering, Metallurgy, Thermodynamics, chemistry.chemical_element, Activation energy, engineering.material, Condensed Matter Physics, Stress (mechanics), Grain growth, chemistry, Mechanics of Materials, engineering, Stress relaxation, General Materials Science, Microalloyed steel, Deformation (engineering)
Abstract

The dynamic recrystallisation (DRX) and static recrystallisation (SRX) behaviours of three V–Ti microalloyed steels were studied by the analysis of the true stress–strain curves and the stress relaxation curves under different deformation conditions. The results of DRX showed that deformation activation energy Qdef, peak stress and peak strain increased, as a result of the solute strengthening and dragging effect due to Si. The results of SRX showed that Si increased the SRX activation energy QSRX. The solute retardation parameter for static recrystallisation of Si was calculated. Based on the SRX results, to quantify the drag effect of Si and V, a new model was proposed to describe the time for 50% recrystallisation (t0·5), which was tested and verified by previously published data on similar steels. Precipitation during recrystallisation could lead to a lower value of the Avrami exponent.

Published
2013
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16. Image deblurring using empirical Wiener filter in the curvelet domain and joint non-local means filter in the spatial domain

Author

D. Y. Wu, He-Chuan Yang, H. Y. Huang, and Z. B. Zhang

Subjects
Deblurring, business.industry, Wiener filter, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Pattern recognition, Filter (signal processing), Non-local means, symbols.namesake, Noise, Wavelet, Computer Science::Computer Vision and Pattern Recognition, Frequency domain, Media Technology, symbols, Curvelet, Computer vision, Computer Vision and Pattern Recognition, Artificial intelligence, business, Mathematics
Abstract

In this paper, an efficient image deblurring algorithm is proposed. This algorithm restores the blurred image by incorporating a curvelet-based empirical Wiener filter with a spatial-based joint non-local means filter. Curvelets provide a multidirectional and multiscale decomposition that has been mathematically shown to represent distributed discontinuities such as edges better than traditional wavelets. Our method restores the image in the frequency domain to obtain a noisy result with minimal loss of image components, followed by an empirical Wiener filter in the curvelet domain to attenuate the leaked noise. Although the curvelet-based methods are efficient in edge-preserving image denoising, they are prone to producing edge ringing which relates to the structure of the underlying curvelet. In order to reduce the ringing, we develop an efficient joint non-local means filter by using the curvelet deblurring result. This filter could suppress the leaked noise while preserving image details. We compare our deblurring algorithm with a few competitive deblurring techniques in terms of improvement in signal-to-noise-ratio (ISNR) and visual quality.

Published
2013
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17. [Effects of resuscitation by different formulation on oxygen metabolism during shock stage of burn injury in swine]

Author

D Y, Wu, W X, Huang, J, Chen, D J, Xue, J J, Zhou, and X M, Lu

Subjects
Oxygen, Oxygen Consumption, Central Venous Pressure, Swine, Resuscitation, Animals, Fluid Therapy, Humans, Swine, Miniature, Blood Pressure, Shock, Pulmonary Wedge Pressure, Burns
Abstract

To explore the effects of different fluid resuscitation regimens on oxygen metabolism during shock stage of burn injury in swine.Twelve Bama miniature swines were divided into crystal and colloid group (Group 1) and Parkland group (Group 2) according to the random number table. The swine models of burns shock were established. The fluid resuscitation was begun at post injury hour (PIH) 2 according to Chinese formulation or Parkland's formulation, respectively. The blood pressure, urine volume, heart rate, central venous pressure (CVP), pulmonary capillary wedge pressure (PCWP) were recorded. The liquid volume was calculated at the first and second PIH 24. The changes in oxygen delivery (DO2), oxygen consumption (VO2), oxygen extraction (O2Ext) and D-lactate (D-LA) were determined before injury and at PIH 4, 8, 24, and 48. Statistical analyses were performed.There were no statistical differences between the two groups in blood pressure, urine volume, heart rate, CVP, PCWP in every interval (all P0.05). The resuscitation liquid volume in the two groups during the first and second PIH 24 conformed to the domestic consensus. The VO2 at PIH 8 was significantly higher than that of pre-burn in both groups [(190±29) vs (83±42) L·min(-1)·m(-2,) (149±33) vs (85±15) L·min(-1)·m(-2,) both P0.05], and the VO2 at PIH 8 was significantly higher in Group 1 than that in Group 2 (P0.05). The DO2 at PIH 24 in Group 1 was significantly lower than that in Group 2 [(686±72) vs (853±81) L·min(-1)·m(-2,) P0.05]. There were no significant differences between the two groups in O2Ext at any time points (all P0.05). The D-LA at PIH 8 was significantly higher in Group 1 than that in Group 2 [(53±4) vs (45±6) mmol/L, P0.05].There are no significant differences in the resuscitation effects of the crystal and colloid resuscitation regimen and Parkland's formulation on oxygen metabolism during shock stage of burn injury in swine.

Published
2016

18. High power and efficiency of a 2044-nm c-cut Tm, Ho:YAlO3 laser

Author

Y. M. Wang, J. P. Qin, D. Y. Wu, Linjing Li, Z. L. He, J. J. Chen, Jianping Wang, W. Y. Liu, Yulei Wang, A. H. Li, Z. G. Zhang, and Baoquan Yao

Subjects
Pulse repetition frequency, Materials science, Laser diode, business.industry, Slope efficiency, Condensed Matter Physics, Laser, Industrial and Manufacturing Engineering, Atomic and Molecular Physics, and Optics, law.invention, Wavelength, Optics, law, Optoelectronics, Continuous wave, Laser power scaling, business, Instrumentation, Pulse-width modulation
Abstract

A high power and efficiency of c-cut Tm, Ho:YAlO3 (YAP) laser is reported in the paper. The laser operated in continuous wave (CW) mode or Acousto-optical (AO) Q-switched mode at 2044 nm. The Tm, Ho:YAP crystal was cooled at the temperature of 77 K and pumped by a fiber-coupled laser diode (LD) with the centre output wavelength of 794.8 nm. In CW operation, a 9.30-W output power was obtained at a 150-mm physical cavity length, corresponding to a slope efficiency of 42.5%. In Q-switch mode, the output average power of 9 W was achieved at the pulse repetition frequency (PRF) of 10 kHz with a 130-ns pulse width. Moreover, the energy per pulse of 3.54 mJ in 47 ns was acquired at 2.5 kHz with a 75.3-kW peak power.

Published
2011
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20. Characterization of membranes with X-ray ultramicroscopy

Author

Weimin Gao, Zheng Peng, Manh Hoang, D. Gao, Lingxue Kong, D. Y. Wu, and Fenghua She

Subjects
Materials science, Scanning electron microscope, Mechanical Engineering, General Chemical Engineering, Resolution (electron density), Nanotechnology, General Chemistry, Ultramicroscope, Characterization (materials science), Membrane, Nano, Microscopy, General Materials Science, Projection (set theory), Water Science and Technology
Abstract

Non-invasive characterization and observation of synthetic membranes is an important practice to monitor the performance of membrane process. Primarily there are two techniques—optical and non-optical for this purpose. Among them, X-ray computed tomography, as a non-optical technique, has been extensively used for the measurement of fibre distribution and air pockets trapped in the modules. However, the micro resolution of most commercial systems has limited its application which can hardly be used for the sub-micro characterization of membrane processes. A novel micro and nano characterization method is introduced in the current work by exploring an innovative development of the X-ray ultramicroscope (XuM) and micro-tomographic techniques. The XuM, based on using a scanning electron microscope as host, provides a new approach to X-ray projection microscopy. It has demonstrated the ability to characterize very small features in objects, down to of order 100 nm, including the use for dry, wet and even liquid samples. It can also distinguish objects with very subtle difference in density.

Published
2009
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21. Nurses as providers of emotional support to patients with MDR-TB

Author

Eda Palacios, Maribel Muñoz, Karim Llaro, Jennifer Furin, Lorena Mestanza, Rocío Sapag, Sonya Shin, Dalia Guerra, D. Y. Wu, and Katiuska Chalco

Subjects
Adult, Program evaluation, medicine.medical_specialty, Social stigma, business.industry, Social Support, Qualitative property, Participant observation, Focus group, Social support, Nursing, Family medicine, Adaptation, Psychological, Peru, Tuberculosis, Multidrug-Resistant, Humans, Patient Compliance, Medicine, Female, business, Poverty, Psychosocial, Qualitative Research, General Nursing, Qualitative research
Abstract

Aim: To identify the forms and means of emotional support that nurses provide to patients living with multidrug-resistant tuberculosis (MTR-TB) in Lima, Peru. Background: A fundamental role of nurses is to provide emotional support, defined as all the strategies that a health team employs to assure the psychosocial well-being of the patient. However, neither the forms of emotional support nor the means used by nurses in resource-poor settings have been much written about. This paper describes a qualitative study of a team of seven nurses working in a programme that provides individualized MDR-TB treatment to patients in Lima, Peru. It describes the various forms of support that facilitated the ability of patients to adhere to treatment despite socio-economic difficulties, social stigma, drug side effects, problems related to different stages of treatment and concurrent illnesses/special situations. Methods: Qualitative study methods were employed over the course of 8 years to observe nurses and patients in an MDR-TB treatment programme. These included participant observation, structured observation sessions of nurses with their patients and focus groups with seven nurses. Conclusion: Through theme and content analyses of qualitative data, ten situations related to MDR-TB treatment were found. These ten issues served as an analytical framework used to identify and discuss the various types of emotional support provided by both formal and informal means. This type of support focused on problems related to different stages of treatment, social stigma of the illness, treatment adherence, side effects, socio-economic difficulties, death and concurrent illnesses/special situations. Practice implications: The essential role of the nurse as a provider of emotional support in the development or implementation of similar programmes with MDR-TB should, in future, be taken into account.

Published
2006
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22. HLA-A, -B, and -DRB1 polymorphism defined by sequence-based typing of the Han population in Northern China

Author

D.-Y. Wu, Bofeng Zhu, Yang Liu, Songnian Hu, S.-B. Li, Jun Zhu, Yajun Deng, and Guang Yang

Subjects
musculoskeletal diseases, China, Immunology, Human leukocyte antigen, Biology, Polymerase Chain Reaction, Biochemistry, Gene Frequency, Polymorphism (computer science), Genetics, Humans, Immunology and Allergy, Typing, Allele, skin and connective tissue diseases, Allele frequency, Gene, Alleles, Polymorphism, Genetic, HLA-A Antigens, Haplotype, Genetic Variation, HLA-DR Antigens, Sequence Analysis, DNA, General Medicine, HLA-A, Haplotypes, HLA-B Antigens, HLA-DRB1 Chains
Abstract

DNA typing for human leukocyte antigen (HLA)-A, -B and -DRB1 was performed using polymerase chain reaction-sequence-based typing method on 618 randomly selected healthy individuals of the Han population in Northern China. Allele frequencies and haplotypes were statistically analyzed. A total of 84 HLA-A alleles, 143 B alleles, and 122 DRB1 alleles were detected, and 853 A-B-DRB1 haplotypes, 473 A-B haplotypes, and 551 B-DRB1 haplotypes were statistically inferred. Statistical analysis of three-locus haplotypes showed that A*0207-B*4601-DRB1*0901 (3.06%) was the most predominant. Gene frequencies and haplotypic associations within HLA-A, -B, and -DRB1 loci were determined at a high-resolution (four digit) allelic level and should provide useful information in anthropology, bone marrow donor registry, legal medicine, and disease association studies.

Published
2006
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23. Evolution of structural order in germanium ion-implanted amorphous silicon layers

Author

S.L. Cheng; H. H. Lin, J. H. He; T. F. Chiang, C. H. Yu; L. J. Chen, C. K. Yang; D. Y. Wu, and S. C. Chien; W. C. Chen

Subjects
Germanium -- Chemical properties, Germanium -- Structure, Silicon compounds -- Chemical properties, Silicon compounds -- Structure, Physics
Abstract

High-resolution transmission electron microscopy in conjunction with autocorrelation function analysis is applied to investigate the evolution of structural order in germanium ion-implanted amorphous silicon (a-Si) layers. A high density of Si nanocrystallites as small as 1 nm in size was detected in as-implanted a-Si layers.

Published
2002

24. A Quantum Chemical Study of Bonding Interaction, Vibrational Frequencies, Force Constants, and Vibrational Coupling of Pyridine−Mn (M = Cu, Ag, Au; n = 2−4)

Author

D. Y. Wu, Kuo Kan Liang, Y. L. Yeh, Ying-Jen Shiu, Michitoshi Hayashi, Shu-Yung Lin, and Chung-Yi Chang

Subjects
Binding energy, engineering.material, Metal, chemistry.chemical_compound, chemistry, Computational chemistry, visual_art, Molecular vibration, Pyridine, Physics::Atomic and Molecular Clusters, visual_art.visual_art_medium, engineering, Physical chemistry, Molecule, Noble metal, Molecular orbital, Physics::Chemical Physics, Physical and Theoretical Chemistry, Rotational–vibrational coupling
Abstract

The binding interactions between the pyridine and small noble metal clusters in different sizes (n = 2−4) have been investigated by using quantum chemical methods. The binding energies of Py−M2 complexes are obtained at the levels of the Hartree−Fock method (HF), the second-order Moller−Plesset perturbation theory (MP2), the local density functional method (SVWN), the nonlocal density functional method (BLYP, BPW91, G96LYP, G96PW91), and the hybrid density functional method (B3LYP and B3PW91). All calculated results show that the bonding is stronger in pyridine/copper and pyridine/gold than that in pyridine/silver. The bonding mechanism is explored in terms of the bonding molecular orbital properties. The donation interaction of the lone-pair electrons on nitrogen of the pyridine molecule to the unoccupied orbital of each metal cluster plays an important role. The force constants of the internal coordinates of interests are presented. The vibrational frequency shift has been analyzed on the basis of the c...

Published
2003
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25. Compact modeling solution of layout dependent effect for FinFET technology

Author

Guan Shyan Lin, Y. C. Liu, D.C. Chen, D. Y. Wu, Meng Fan Wang, Tien Hua Lee, Yi Ching Cheng, and Ryan Lee

Subjects
Work (thermodynamics), Materials science, Logic gate, Proximity effect (audio), Hardware_INTEGRATEDCIRCUITS, Electronic engineering, Boundary (topology), Degradation (geology), Scaling, AND gate, Line (electrical engineering)
Abstract

We successfully developed and verified a complete compact model solution for layout dependent effect (LDE) of FinFET technology. LDE has significant impact on the device performances mainly due to the application of stressors and aggressive device scaling. With LDE, performance degradation may be up to 10% or more. In this work, compact model solution for Length of Oxidation (LOD), Well Proximity Effect (WPE), Neighboring Diffusion Effect (NDE), Metal Boundary Effect (MBE), and Gate Line End Effect (GLE) were delivered. This solution was implemented successfully in BSIM-CMG for efficient circuit simulation.

Published
2015
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26. The effect of ZrO2 nanoparticles on TiO2–Al–C combustion synthesis system

Author

Li Wenchao, Qi-Li Tang, Q. Dong, and D. Y. Wu

Subjects
Aluminium oxides, Range (particle radiation), Nanocomposite, Materials science, Mechanical Engineering, Inorganic chemistry, Nanoparticle, Fraction (chemistry), Condensed Matter Physics, Microstructure, Combustion, Chemical engineering, Mechanics of Materials, Melting point, General Materials Science
Abstract

The effect of an addition of ZrO2 nanoparticles on the TiO2–Al–C combustion synthesis system was investigated. The result of thermodynamic calculation shows that about 10 wt.% ZrO2 nanoparticles addition reduces the Tad from 2398 to 2327 K (the melting point of Al2O3). The fraction of molten Al2O3 varied from 100% to 78% with the addition of ZrO2 in the range of 0–15 wt.%. The combustion velocity u and the mass combustion velocity G decrease with the increasing content of ZrO2 nanoparticles. The combustion product is a mixture of Al2O3, TiC and ZrO2. Al2O3–TiC–ZrO2 nanocomposites were synthesized by reactions in TiO2–Al–C–ZrO2 combustion synthesis system.

Published
2002
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27. Evolution of structural order in germanium ion-implanted amorphous silicon layers

Author

C. K. Yang, D. Y. Wu, T. F. Chiang, S. L. Cheng, Jr-Hau He, L. J. Chen, S.C. Chien, W. C. Chen, H. H. Lin, and C. H. Yu

Subjects
Amorphous silicon, Materials science, Silicon, business.industry, Annealing (metallurgy), Doping, General Physics and Astronomy, chemistry.chemical_element, Germanium, Nanocrystalline material, Amorphous solid, Condensed Matter::Materials Science, chemistry.chemical_compound, Crystallography, Ion implantation, chemistry, Optoelectronics, business
Abstract

High-resolution transmission electron microscopy in conjunction with autocorrelation function analysis have been applied to investigate the evolution of structural order in germanium ion-implanted amorphous silicon (a-Si) layers. A high density of Si nanocrystallites as small as 1 nm in size was detected in as-implanted a-Si layers. The density of embedded nanocrystalline Si was found to diminish in a-Si layers with annealing temperature first then increase. The results are discussed in the context of free energy change with annealing temperature.

Published
2002
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28. Future CMOS technology for low noise integrated circuit designs

Author

Yi Ching Cheng, D. Y. Wu, Chao Sheng Chen, and Chih-Hung Chen

Subjects
Engineering, business.industry, Electrical engineering, Integrated circuit, Low noise, law.invention, Noise, Strain engineering, CMOS, law, Electronic engineering, Node (circuits), business, Sheet resistance, Communication channel
Abstract

This paper utilizes the recently defined equivalent noise sheet resistance to study the noise performance of future sub-100nm MOSFETs using strain engineering, channel engineering with III–V materials, and quantum-well structures for low-noise applications. Experimental results for devices fabricated in UMC's five different CMOS technology nodes and other published data down to 20 nm technology node are demonstrated. Strategies for the future low-noise technologies are also discussed.

Published
2014
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29. Safe-economical route model of a ship to avoid tropical cyclones using dynamic forecast environment

Author

Lichuan Wu, D. Y. Wu, Changshi Xiao, Yanwei Wen, and J. Zhang

Subjects
Routing (hydrology), Engineering, Operations research, business.industry, Numerical models, Tropical cyclone, Risk assessment, business, Capsizing, Marine engineering
Abstract

In heavy sea conditions related to tropical cyclones (TCs), losses to shipping caused by capsizing are greater than other kinds of accidents. Therefore, it is important to consider capsizing risk in the algorithms used to generate safe-economic routes that avoid tropical cyclones (RATC). A safe-economic routing and assessment model for RATC, based on a dynamic forecasting environment, is presented in this paper. In the proposed model, a ship's risk is quantified using its capsizing probability caused by heavy wave conditions. Forecasting errors in the numerical models are considered in the ship risk assessment according to their distribution characteristics. A case study shows that: the economic cost of RATCs is associated not only to the ship's speed, but also to the acceptable capsizing probability which is related with the ship's characteristic and the cargo loading condition. Case study results demonstrate that the optimal routes obtained from the model proposed in this paper are superior to those produced by traditional methods.

Published
2014
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30. Thermodynamic Analysis of TiO2-Al-C-ZrO2 Combustion Synthesis System

Author

Q. Dong, D. Y. Wu, Qing Tang, and Wenchao Li

Subjects
Diffraction, Work (thermodynamics), Materials science, Nanocomposite, Mechanics of Materials, Transmission electron microscopy, Scanning electron microscope, Mechanical Engineering, Phase (matter), Thermodynamics, General Materials Science, Combustion, Microstructure
Abstract

Combustion Synthesis of Al2O3-TiC-ZrO2 nanocomposites by reaction of TiO2-Al-C-ZrO2 system is a new method with advantages of simplicity and efficiency. Thermodynamic analysis of TiO2-Al-C-ZrO2 system is very important for obtaining ideal phases. In the present work, the possible combustion products are discussed by a new approach of overlapped Phase Stability Diagram (PSD) of Al-O-N, Ti-O-N, Zr-O-N and C-O-N systems. Thermodynamic analysis shows that the desired combustion product is a mixture of Al2O3, TiC and ZrO2. The microstructure and the phase compositions of the combustion products are studied by using X-ray Diffraction Analysis (XRD), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM), respectively.

Published
2001
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31. Thermodynamic analysis of combustion synthesis of Al2O3–TiC–ZrO2 nanoceramics

Author

Qunli Tang, Li Wenchao, Q. Dong, and D. Y. Wu

Subjects
Diffraction, Work (thermodynamics), Materials science, Mechanical Engineering, Thermodynamics, Fraction (chemistry), Condensed Matter Physics, Combustion, Adiabatic flame temperature, Mechanics of Materials, Transmission electron microscopy, Melting point, General Materials Science, Adiabatic process
Abstract

Combustion synthesis of Al2O3–TiC–ZrO2 nanoceramics by reactions in the TiO2–Al–C–ZrO2 system is a new method with advantages of simplicity and efficiency. In this work, the effect of ZrO2 nanoparticles on the thermodynamics of combustion synthesis of the TiO2–Al–C system is studied to obtain desired phases. The result of thermodynamic analysis shows that the adiabatic temperature Tad of the system stays at about 2327 K (the melting point of Al2O3) with the addition of ZrO2in the range of 0–15 wt% and the fraction of molten Al2O3 varied from 100% to 78%. The possible combustion products are discussed with an approach of an overlapped phase stability diagram of the Al–O–N, Ti–O–N, Zr–O–N, and C–O–N systems at 2300 K. It has been shown that the combustion product is a mixture of Al2O3–TiC–ZrO2, which coincides with the results obtained by x-ray diffraction and transmission electron microscopy.

Published
2001
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32. [Untitled]

Author

Zhi-Cheng Tan, Shuang-He Meng, D.-Y. Wu, Li Li, and Siyu Wang

Subjects
Thermogravimetric analysis, business.industry, chemistry.chemical_element, Condensed Matter Physics, Combustion, Catalysis, Catalytic oxidation, chemistry, Chemical engineering, Coal, sense organs, Graphite, Physical and Theoretical Chemistry, Thermal analysis, business, Carbon
Abstract

The catalytic and accelerating effects of three coal-burning additives (CBA) on the burning of graphite were studied with the help of thermogravimetric (TG) analysis. The kinetic study on the catalytic oxidation of the graphite doped with CBA was carried out and the results were presented. The results show that the CBA can change the carbon oxidation/combustion course by catalytic action and change the activation energy, thus improving the combustion efficiency.

Published
2000
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33. Limits onWWZandWWγCouplings frompp¯→eνjjXEvents ats}=1.8TeV

Author

B. Flaugher, J. P. Berge, P. Yeh, S. Vejcik, J. Huth, M. Dickson, A. Titov, S. Cihangir, J. Strait, F. Ptohos, R. Ely, T. J. Phillips, H. Grassmann, A. B. Wicklund, J. I. Lamoureux, G. Punzi, B. L. Winer, E. Engels, O. Schneider, A. Stefanini, W. Carithers, D. Bisello, E. Kovacs, E. E. Schmidt, T. Takahashi, D. A. Kardelis, T. Baumann, C. Bromberg, S. Belforte, S. Moulding, M. Cordelli, R. J. Miller, S. Leone, R. G. Wagner, S. Segler, G. Brandenburg, J. Wolinski, A. Maghakian, L. Keeble, C. Haber, M. Turcotte, A. T. Goshaw, H. Mitsushio, F. Azfar, Y. Teramoto, J. Hauser, G. Houk, D. W. Gerdes, N. Wainer, M. Mishina, A. Sgolacchia, R. P. Thun, J. Steele, S. Funaki, M. Paulini, K. Yasuoka, S. Donati, S. Eno, M. Roach-Bellino, Y. Morita, T. Chikamatsu, S. Bertolucci, Weiya Zhang, H. Jensen, Mosè Mariotti, S. Dell'Agnello, D. A. Smith, C. Boswell, B. Farhat, K. Strahl, M. P. Schmidt, D. Neuberger, P. Lukens, G. Pauletta, G. Wang, P. Musgrave, N. Produit, S. Miscetti, G. Watts, G. Piacentino, Umesh Joshi, K. E. Ohl, C. Hawk, M.-T. Cheng, D. Carlsmith, M. J. Wang, R. M. Hans, R. Oishi, W. Koska, J. Skarha, H. Frisch, T. A. Fuess, T. Muller, Andrea Castro, K. Maeshima, M. Campbell, P. Giannetti, R. M. Keup, B. A. Barnett, A. Sansoni, S. Zucchelli, R. E. Blair, P. Melese, F. D. Snider, F. Rimondi, S. Geer, M. Gold, S. H. Kim, V. Scarpine, J. Lys, J. Kroll, P. Limon, K. L. Byrum, J. Patrick, T. L. Watts, Y. K. Kim, Marina Cobal, C. Grosso-Pilcher, Jakita O. Thomas, A. Fry, F. Bird, R. C. Walker, L. Stanco, R. Wilkinson, P. Giromini, S. van den Brink, J. Tonnison, C. Wei, Andrew Beretvas, J. D. Cunningham, J. R. Dittmann, M. J. Shochet, P. Hu, E. Kuns, J. C. Yun, L. Nodulman, L. Pondrom, E. Wicklund, G. Bellettini, L. Pescara, C. P. Jessop, K. Hara, A. Zanetti, G. Unal, Alan Sill, Michele Gallinaro, W. Bokhari, D. Bortoletto, S. R. Amendolia, T. Rodrigo, K. Tollefson, H. Wenzel, S. H. Oh, J. D. Lewis, J. Incandela, H. Iso, M. Incagli, L. Demortier, N. S. Lockyer, W-M. Yao, I. Yu, A. Dunn, H. Kasha, C. Couyoumtzelis, C. N. Chiou, E. Meschi, Sung Keun Park, J. E. Elias, Q. F. Wang, C. Pagliarone, J. Konigsberg, N. Giokaris, M. Krasberg, A. G. Clark, S. Seidel, F. Keyvan, T. Devlin, J. Conway, A. F. Garfinkel, P. Kesten, P. Koehn, P. K. Teng, F. Bedeschi, F. DeJongh, R. Hollebeek, Hyun-Chul Kim, M. G. Albrow, V. Bolognesi, J. Wang, W. J. Robertson, J. Mueller, R. D. Kennedy, J. Spalding, J. Lu, D. Lucchesi, P. F. Shepard, M. Binkley, Mark Kruse, Kiminori Kondo, Paul Tipton, I. Fiori, K. Biery, R. Hamilton, M. Pillai, G. Bauer, M. Vondracek, J. Bellinger, C. Anway-Wiese, G. P. Yeh, C. Yosef, H. Y. Chao, J. A. J. Matthews, F. Ukegawa, J. Freeman, P. de Barbaro, E. Kajfasz, C. B. Luchini, R. L. Swartz, S. Miyashita, C. H. Wang, M. Contreras, J. Mansour, N. M. Shaw, James Proudfoot, M. Franklin, J. W. Chapman, G. Sganos, S. Behrends, B. Denby, B. T. Huffman, J. Siegrist, R. L. Wagner, A. Caner, W. Badgett, N. Labanca, K. Ragan, H. H. Williams, R. Vidal, L. Gladney, Fumio Abe, W. Kowald, A. Mukherjee, S. Mikamo, A. Hölscher, J. Yoh, M. Atac, E. H. Low, R. E. Hughes, J. Antos, G. Sullivan, H. S. Budd, H. Areti, L. Song, T. L. Thomas, L. F. Nakae, Konstanty Sumorok, P. Azzi, R. Plunkett, A. Barbaro-Galtieri, W. C. Wester, Sacha E Kopp, S. R. Hahn, K. Sliwa, N. Turini, D. Crane, J.I. Friedman, K. Goulianos, Giorgio Apollinari, L. Groer, N. Uemura, M. D. Peters, Y. Cen, C. Wendt, S. Tether, Teruki Kamon, M. Frautschi, Y. Seiya, P. Maksimovic, Leonard Spiegel, A. Scribano, C. Campagnari, Daniel P Cronin-Hennessy, P. McIntyre, P. Hurst, M. Timko, James Bensinger, G. Michail, Y. Ye, P. Sinervo, R. B. Drucker, Kevin Burkett, W. K. Sakumoto, P. F. Derwent, P. Wilson, H. Keutelian, T. Yoshida, G. Gagliardi, J. Hylen, M. Yin, D. H. Kim, G. W. Foster, V. Papadimitriou, M. Mangano, J. Cooper, D. Saltzberg, M. Miller, S. Delchamps, A. Schindler, T. M. Liss, G. Busetto, M. Loreti, T. Song, A. Yagil, T. Daniels, D. Y. Wu, A. T. Laasanen, P. Maas, R. W. Kadel, Yasuo Fukui, T. Okusawa, Le Zhang, J. Huston, A. Spies, D. Yovanovitch, T. Westhusing, S. Ogawa, R. M. Harris, D. Glenzinski, R. Kephart, Steve Kuhlmann, D. Amidei, C. Loomis, R. Mattingly, A. Bodek, J. Wyss, G. Chiarelli, M. M. Deninno, O. Long, Andreas Warburton, S. Errede, M. W. Bailey, A. Grewal, J. Tseng, D. Errede, Q. Shen, A. Menzione, T. Kaneko, Y. Kato, S. Zhang, F. Cervelli, M. Shimojima, Catherine Newman-Holmes, P. Auchincloss, P. Schlabach, K. Takikawa, D. Vucinic, C. Nelson, L. Ristori, K. Kordas, P. Bartalini, E. Buckley-Geer, D. Kestenbaum, S. B. Kim, Riccardo Paoletti, I. Nakano, J. Bao, J. P. Marriner, Q. Fan, Douglas Benjamin, J. Cammerata, A. Tollestrup, J. Romano, P. Singh, M. Shapiro, M. Dell'Orso, J. Heinrich, Jose M. Benlloch, G. F. Sciacca, L. Christofek, R. Handler, L. Rosenson, T. Mimashi, L. E. Kirsch, A. Byon-Wagner, F. Zetti, C. Blocker, A. Gordon, P. Sphicas, Hong Sj, S. A. Hauger, F. Tartarelli, Virgil E Barnes, W. Taylor, J. F. de Troconiz, S. Galeotti, T. Boulos, R. C. Webb, A. Martin, S. Lammel, T. LeCompte, M. Lindgren, D. Theriot, L. Holloway, D. Benton, Nicola Bacchetta, J. Gonzalez, B. Harral, X. Wu, K. Einsweiler, S. Tkaczyk, David Stuart, and A. Bhatti

Subjects
Physics, Coupling, Particle physics, Luminosity (scattering theory), High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, Electron, Lambda, law.invention, Nuclear physics, law, Transverse momentum, High Energy Physics::Experiment, Fermilab, Neutrino, Collider
Abstract

We present limits on anomalous WWZ and WW-gamma couplings from a search for WW and WZ production in p-bar p collisions at sqrt(s)=1.8 TeV. We use p-bar p -> e-nu jjX events recorded with the D0 detector at the Fermilab Tevatron Collider during the 1992-1995 run. The data sample corresponds to an integrated luminosity of 96.0+-5.1 pb^(-1). Assuming identical WWZ and WW-gamma coupling parameters, the 95% CL limits on the CP-conserving couplings are -0.33

Published
1997
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34. Measurement of theB+andB0Lifetimes Using Topological Reconstruction of Inclusive and Semileptonic Decays

Author

G. Grieco, E. Engels, Sangjin Kim, R. W. Kadel, M. L. Miller, R. Kephart, R. E. Blair, E. H. Low, P. Lukens, D. W. Gerdes, M. W. Bailey, D. Bortoletto, Y. Morita, D. Crane, X. Wu, Y. Cen, A. Barbaro-Galtieri, L. Rosenson, W. Yao, D. Benton, A. Stefanini, D. Yovanovitch, C. Newman-Holmes, M. Timko, A. Sansoni, T. Kaneko, O. Schneider, A. Caner, A. Menzione, T. Kamon, J. Wyss, J. Freeman, A. Hölscher, S. Vejcik, D. Benjamin, H. Keutelian, S. Donati, D. A. Smith, B. Harral, J. Gonzalez, J. Bellinger, K. Ragan, K. Kordas, N. Turini, E. Kuns, R. L. Wagner, C. Campagnari, G. Unal, P. Auchincloss, S. Zhang, E. Buckley-Geer, P. Koehn, K. Goulianos, T. J. Phillips, T. Chikamatsu, S. Funaki, J. Hauser, L. Gladney, S. Zucchelli, J. Romano, W. Koska, J. F. de Troconiz, A. Schindler, S. Hong, G. W. Foster, T. Westhusing, S. Seidel, Q. Shen, L. Groer, L. Pescara, A. Grewal, F. Rimondi, S. Tether, P. Hurst, S. Eno, M. Mishina, L. Nodulman, A. Titov, B. Denby, Y. Teramoto, P. Melese, W. K. Sakumoto, O. Long, D. Errede, L. Holloway, S. Mikamo, R. C. Webb, R. M. Keup, K. Sliwa, A. B. Wicklund, A. Zanetti, C. Haber, W. J. Robertson, F. Abe, J. Heinrich, I. Fiori, R. Hollebeek, M. Campbell, D. A. Kardelis, G. Houk, A. Castro, G. Chiarelli, Y. K. Kim, G. Busetto, M. Shimojima, D. Saltzberg, A. Tollestrup, M. Shochet, J. P. Berge, R. Ely, C. Pagliarone, D. Bisello, M. Gold, V. Papadimitriou, K. Kondo, C. B. Luchini, E. Kovacs, A. F. Garfinkel, H. Kasha, A. Fry, P. Bartalini, F. Ptohos, J. Bao, S. Segler, N. Bacchetta, Marina Cobal, T. Lecompte, C. Boswell, W. Badgett, K. Strahl, H. S. Kim, C. Anway-Wiese, E. Meschi, D. Neuberger, H. H. Williams, I. Nakano, S. Dell'Agnello, F. Azfar, J. D. Cunningham, S. Behrends, G. Apollinari, T. Boulos, T. Takahashi, J. Spalding, S. Ogawa, S. E. Kuhlmann, C. Wendt, S. A. Hauger, H. Mitsushio, P. F. Shepard, L. Keeble, Richard Hughes, P. Sinervo, V. E. Barnes, J. Konigsberg, J. Tseng, J. P. Marriner, M. Frautschi, A. J. Martin, T. Okusawa, A. Maghakian, D. Glenzinski, R. Oishi, H. Frisch, J. Proudfoot, D. Carlsmith, K. Biery, T. Rodrigo, P. Giromini, R. B. Drucker, A. G. Clark, R. M. Hans, J. Yoh, M. Franklin, J. Siegrist, R. C. Walker, M. Shapiro, J. Strait, F. D. Snider, J. Wolinski, D. Theriot, P. Wilson, J. Kroll, L. F. Nakae, J. Friedman, A. Beretvas, G. P. Yeh, M. Contreras, G. F. Sciacca, John Wehrley Chapman, G. Bellettini, W. Zhang, R. Paoletti, A. Gordon, F. Bird, Tony Liss, H. S. Budd, R. Handler, P. Maas, F. Keyvan, Y. Fukui, D. Y. Wu, S. Cihangir, J. Incandela, Jose M. Benlloch, P. Musgrave, S. Park, P. F. Derwent, J. Huston, I. Yu, S. Miscetti, Peter McIntyre, G. Pauletta, D. Lucchesi, G. Watts, P. Limon, E. Wicklund, M. Binkley, T. Baumann, C. Hawk, A. Scribano, M. Incagli, S. Errede, G. Brandenburg, J. Skarha, M. D. Peters, S. Belforte, L. Pondrom, J. Patrick, R. Vidal, T. Yoshida, H. Areti, J. Tonnison, D. P. Coupal, S. Kopp, K. Burkett, K. Sumorok, T. Song, Y. Kato, M. Turcotte, S. Lammel, P. Schlabach, Mark Kruse, A. Bhatti, L. Ristori, R. M. Harris, R. Wilkinson, L. E. Kirsch, N. Lockyer, K. Takikawa, J. Mansour, M. G. Albrow, R. L. Swartz, J. D. Lewis, C. Grosso-Pilcher, J. I. Lamoureux, A. Yagil, R. Thun, K. L. Byrum, L. Song, M. P. Schmidt, R. Mattingly, A. T. Goshaw, K. Yasuoka, K. Einsweiler, S. Miyashita, H. Iso, T. Devlin, G. Gagliardi, Paul Tipton, M. Dell'Orso, R. G. Wagner, K. Hara, G. Michail, W. Carithers, E. E. Schmidt, J. Steele, N. Produit, E. Kajfasz, H. Wenzel, C. Nelson, M. Vondracek, B. Flaugher, A. Warburton, C. P. Jessop, H. Grassmann, F. Dejongh, S. H. Kim, U. Joshi, P. Sphicas, S. Geer, B. T. Huffman, D. Hennessy, N. M. Shaw, B. A. Barnett, K. Maeshima, L. Demortier, B. L. Winer, G. Piacentino, J. Huth, A. Etchegoyen, L. Stanco, J. Mueller, M. Krasberg, M. Yin, M. Mariotti, N. Wainer, M. Cordelli, F. Cervelli, D. Kestenbaum, D. Amidei, W. C. Wester, F. Tartarelli, D. H. Kim, P. Giannetti, T. Mimashi, J. R. Cooper, J. Hylen, J. E. Elias, G. Bauer, F. Bedeschi, N. Uemura, M. Lindgren, G. Punzi, F. Ukegawa, A. Mukherjee, C. Blocker, Qian Wang, S. Moulding, A. Sill, A. Spies, P. Singh, M. Roach-Bellino, V. Bolognesi, M. Mangano, J. C. Yun, G. Sganos, S. Leone, A. Dunn, J. A J Matthews, M. Pillai, Q. Fan, Y. Ye, H. Jensen, V. Scarpine, P. de Barbaro, M. Deninno, R. Plunkett, M. Gallinaro, T. Daniels, J. Wang, M. Dickson, G. Sullivan, F. Zetti, R. Hamilton, M. Loreti, P. Kesten, J. H. Thomas, P. Azzi, S. R. Hahn, B. Farhat, A. Bodek, A. Byon-Wagner, R. D. Kennedy, Y. Seiya, A. T. Laasanen, J. P. Done, T. Watts, S. Tkaczyk, S. Bertolucci, T. Muller, K. E. Ohl, P. Hu, T. A. Fuess, and N. Giokaris

Subjects
Physics, Semileptonic decay, Particle physics, Meson, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, Elementary particle, Nuclear physics, Particle decay, High Energy Physics::Experiment, B meson, Collider Detector at Fermilab, Boson
Abstract

The lifetimes of the ${\mathit{B}}^{+}$ and ${\mathit{B}}^{0}$ mesons have been measured using fully reconstructed decays. In a sample of \ensuremath{\sim}49 600J/\ensuremath{\psi}\ensuremath{\rightarrow}${\mathrm{\ensuremath{\mu}}}^{+}$${\mathrm{\ensuremath{\mu}}}^{\mathrm{\ensuremath{-}}}$ decays recorded with the Collider Detector at Fermilab, 148\ifmmode\pm\else\textpm\fi{}16 ${\mathit{B}}^{+}$ and 121\ifmmode\pm\else\textpm\fi{}16${\mathit{B}}^{0}$ mesons have been reconstructed using the silicon vertex detector. Unbinned likelihood fits to the proper lifetime distributions of these B mesons give ${\mathrm{\ensuremath{\tau}}}^{+}$=1.61\ifmmode\pm\else\textpm\fi{}0.16 (stat)\ifmmode\pm\else\textpm\fi{}0.05 (syst) ps, ${\mathrm{\ensuremath{\tau}}}^{0}$=1.57\ifmmode\pm\else\textpm\fi{}0.18 (stat) \ifmmode\pm\else\textpm\fi{}0.08 (syst) ps, and ${\mathrm{\ensuremath{\tau}}}^{+}$/${\mathrm{\ensuremath{\tau}}}^{0}$=1.02\ifmmode\pm\else\textpm\fi{}0.16 (stat) \ifmmode\pm\else\textpm\fi{}0.05 (syst).

Published
1997
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35. Direct thymic involvement in anterior chamber-associated immune deviation: evidence for a nondeletional mechanism of centrally induced tolerance to extrathymic antigens in adult mice

Author

Y Wang, I Goldschneider, D Foss, D Y Wu, J O'Rourke, and R E Cone

Subjects
Immunology, Immunology and Allergy
Abstract

Recent reports have suggested that the dichotomy between central (thymic) and peripheral T cell tolerance is not absolute and that self-tolerance in perinatal animals may also involve the intrathymic generation and release to the periphery of Ag-specific immunoregulatory T cells. We have expanded this concept to include tolerance to non self Ags administered extrathymically to adult animals. In this study, we use the anterior chamber-associated immune deviation (ACAID) to demonstrate that central regulation of acquired peripheral tolerance can be induced in adult mice by the intraocular administration of low doses of nonself Ag. The results show that adult thymectomy prevents the inhibition of trinitrophenol (TNP)-specific delayed-type hypersensitivity, which normally occurs after injection of TNP-BSA into the anterior chamber (AC) of the eye. Thymocytes obtained from mice 1 to 3 days, but not 5 to 7 days, after AC injection of TNP-BSA or BSA alone specifically transfer inhibition of delayed-type hypersensitivity to mice primed with the homologous Ag. The latter observation, when correlated with the time of onset of ACAID, suggests that immunoregulatory T cells are formed in the thymus within 24 h and are exported to the peripheral lymphoid tissues between 2 and 5 days after AC injection of Ag. Immunomagnetic separation of thymocytes revealed that the immunoregulatory activity resides within the minor subset of CD4-, CD8-, TCR-alphabeta+ cells, previously postulated to induce fas ligand-mediated apoptosis and Th1 to Th2 immune deviation. Hence, the present study identifies ACAID as a prototypical model of centrally induced, nondeletional tolerance to extrathymic nonself Ags.

Published
1997
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36. Safe-economical route and its assessment model of a ship to avoid tropical cyclones using dynamic forecast environment

Author

Yuanqiao Wen, Lichuan Wu, and D. Y. Wu

Subjects
Engineering, Risk level, Routing (hydrology), Meteorology, business.industry, Economic cost, Wave resistance, Numerical models, Tropical cyclone, business, Capsizing, Marine engineering
Abstract

In heavy sea conditions related to tropical cyclones (TCs), losses to shipping caused by capsizing are greater than other kinds of accidents. Therefore, it is important to consider capsizing risk in the algorithms used to generate safe-economic routes that avoid tropical cyclones (RATC). A safe-economic routing and assessment model for RATC, based on a dynamic forecasting environment, is presented in this paper. In the proposed model, a ship's risk is quantified using its capsizing probability caused by heavy wave conditions. Forecasting errors in the numerical models are considered according to their distribution characteristics. A case study shows that: the economic cost of RATCs is associated not only to the ship's speed and the acceptable risk level, but also to the ship's wind and wave resistance. Case study results demonstrate that the optimal routes obtained from the model proposed in this paper are significantly superior to those produced by traditional methods.

Published
2013
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37. Measurement ofσB(W→eν)andσB(Z0→e+e−)inpp¯Collisions at√s=1.8TeV

Author

Andrea Sansoni, S. Donati, K. Yasuoka, W. Koska, R. J. Miller, J. D. Lewis, B. A. Barnett, Giorgio Apollinari, A. Mukherjee, F. Ptohos, Andrew Beretvas, Kostantinos Kordas, E. H. Low, W. J. Robertson, R. E. Hughes, Teruki Kamon, Petar Maksimovic, F. DeJongh, Craig Blocker, Mosè Mariotti, J. Proudfoot, Y. Cen, Kaori Maeshima, M. Campbell, M. D. Peters, D. A. Smith, P. Giannetti, K. E. Ohl, T. Song, G. Houk, D. A. Kardelis, V. Scarpine, W. K. Sakumoto, D. Glenzinski, Q. Fan, J. Cammerata, A. Tollestrup, S. Geer, G. Piacentino, S. B. Kim, R. C. Walker, N. Produit, Y. Teramoto, T. Baumann, R. Handler, C. Grosso-Pilcher, R. Vidal, S. Dell'Agnello, P. F. Shepard, S. H. Oh, P. Sphicas, H. Keutelian, F. Tartarelli, Virgil E Barnes, A. Schindler, C. Hawk, M. Cordelli, G. Busetto, L. Song, M. Krasberg, W. Carithers, Robert M Harris, L. Pondrom, E. Wicklund, P. Hurst, T. Devlin, S. R. Hahn, P. Wilson, Jose M. Benlloch, G. Michail, J. Wolinski, L. Nodulman, T. Kaneko, A. Caner, S. Vejcik, J. R. Bensinger, L. Groer, Alan Garfinkel, T. Chikamatsu, R. G. Wagner, G. Sganos, P. McIntyre, R. Wilkinson, J. Bao, H. Y. Chao, P. Melese, J. Mansour, R. Mattingly, M. Gold, I. Yu, J. E. Elias, F. Keyvan, B. Flaugher, S. Lammel, Jay Hauser, M. Mishina, A. Menzione, Sijing Zhang, J. Incandela, A. Bodek, T. Takahashi, G. Bauer, J. W. Chapman, J. Conway, F. D. Snider, M. J. Shochet, D. D. Yovanovitch, J. Wyss, J. Antos, Luca Stanco, Sacha E Kopp, F. Cervelli, C. Yosef, T. L. Watts, P. Kesten, S. Behrends, Konstanty Sumorok, C. Haber, R. L. Swartz, Marjorie Shapiro, G. Chiarelli, A. Titov, M. Turcotte, L. Demortier, V. Bolognesi, J. Spalding, O. Schneider, Kiminori Kondo, T. LeCompte, A. Zanetti, M. M. Deninno, O. Long, C. Pagliarone, S. Galeotti, A. B. Wicklund, J. Tseng, D. W. Gerdes, P. Schlabach, F. Bird, P. F. Derwent, Kazuhiko Hara, P. Musgrave, Andrea Castro, M. Mangano, A. Dunn, S. Bertolucci, W. C. Wester, J. Lys, C. H. Wang, D. Errede, E. E. Schmidt, A. Hölscher, S. Zucchelli, R. E. Blair, S. Delchamps, F. Rimondi, C. Nelson, Weiya Zhang, E. Buckley-Geer, Riccardo Paoletti, D. Lucchesi, P. Maas, J. P. Berge, D. Y. Wu, R. Kephart, C. Boswell, P. K. Teng, M. Lindgren, E. Kuns, J.I. Friedman, M. Timko, J. Tonnison, S. Miyashita, R. Ely, H. Areti, L. Christofek, R. B. Drucker, S. Eno, A. Grewal, Yasuo Fukui, Y. Kato, P. Sinervo, Nicola Labanca, T. Okusawa, K. Biery, Le Zhang, R. L. Wagner, Alan Sill, P. Limon, John Huth, L. Holloway, J. N. Bellinger, J. Skarha, K. Goulianos, P. Auchincloss, Daniel P Cronin-Hennessy, G. W. Brandenburg, L. Keeble, Catherine Newman-Holmes, P. Hu, G. Unal, S. Tkaczyk, David Stuart, D. Neuberger, Jun Lu, Mark Kruse, J. Patrick, C. Anway-Wiese, R. Hamilton, M. Pillai, Kevin Einsweiler, J. Huston, H. H. Williams, S. C. van den Brink, A. Spies, T. A. Fuess, W. Kowald, M. Vondracek, C. Loomis, P. de Barbaro, S. Ogawa, S. Leone, Jing Wang, A. Stefanini, G. P. Yeh, S. A. Hauger, Daniela Bortoletto, E. Kajfasz, M. Franklin, H. Grassmann, Umesh Joshi, W-M. Yao, J. Cooper, R. M. Keup, S. H. Kim, R. D. Kennedy, M. Atac, K. Ragan, D. Benton, R. W. Kadel, S. Cihangir, Henry J. Frisch, Tony Liss, G. Pauletta, H. S. Budd, C. Couyoumtzelis, S. Funaki, J. F. de Troconiz, Kevin Burkett, Wendy Taylor, J. A.J. Matthews, S. Mikamo, M. Incagli, J. C. Freeman, M. Yin, S. Segler, M. Contreras, T. Boulos, E. Meschi, Sung Keun Park, Sally Seidel, T. Mimashi, M. Dickson, R. Oishi, B. T. Huffman, G. Gagliardi, Manfred Paulini, M. J. Wang, D. Theriot, B. Farhat, Allan G Clark, M. Miller, Patrizia Azzi, R. C. Webb, A. Martin, S. Moulding, Fumio Abe, R. M. Hans, Douglas Benjamin, T. J. Phillips, Doyeong Kim, Paul Tipton, A. Fry, N. Uemura, C. B. Luchini, M. Frautschi, J. Kroll, James Strait, J. Konigsberg, D. Saltzberg, M. Roach-Bellino, S. R. Amendolia, X. Wu, K. Sliwa, K. Takikawa, W. Bokhari, C. P. Jessop, Duncan Carlsmith, Y. Seiya, C. Campagnari, G. Wang, D. Crane, N. S. Lockyer, M. W. Bailey, D. Amidei, T. L. Thomas, P. Bartalini, P. Lukens, Jakita O. Thomas, F. Zetti, J. C. Yun, Avraham Yagil, G. Sullivan, V. Papadimitriou, K. Strahl, C. N. Chiou, Y. Morita, C. Wei, J. Siegrist, M. Loreti, A. Byon-Wagner, M. P. Schmidt, M. T. Cheng, H. Iso, T. Westhusing, P. Koehn, I. Nakano, R. K. Plunkett, T. Daniels, R. J. Hollebeek, Yongsun Kim, A. Gordon, A. T. Goshaw, Nikos Giokaris, J. I. Lamoureux, C. Bromberg, M. Shimojima, A. Maghakian, Stefano Belforte, L. Pescara, Nicola Turini, A. T. Laasanen, Henrik Jeldtoft Jensen, S. Tether, H. Mitsushio, F. Azfar, L. Ristori, Hong Sj, K. Tollefson, L. F. Nakae, S. Miscetti, Andreas Warburton, P. Singh, Leonard Spiegel, Jochen Jens Heinrich, D. Kestenbaum, M. Dell'Orso, Nicola Bacchetta, J. Romano, J. Gonzalez, F. Bedeschi, B. Harral, Tomoko Yoshida, A. Scribano, G. F. Sciacca, H. Wenzel, F. Ukegawa, A. Barbaro-Galtieri, L. Gladney, W. Badgett, L. Rosenson, D. Vucinic, L. E. Kirsch, T. Rodrigo, Marina Cobal, I. Fiori, S. Errede, Y. Ye, J. D. Cunningham, G. Bellettini, M. Binkley, Q. Shen, M. G. Albrow, J. Hylen, Hyun-Chul Kim, T. Muller, G. W. Foster, C. Wendt, Gordon Watts, Jay Dittmann, Michele Gallinaro, K. L. Byrum, P. Giromini, H. Kasha, Dario Bisello, A. Bhatti, G. Punzi, B. L. Winer, E. Engels, J. P. Marriner, P. Yeh, E. Kovacs, N. Wainer, A. Sgolacchia, R. P. Thun, Q. F. Wang, J. Steele, S. E. Kuhlmann, J. Mueller, N. M. Shaw, B. Denby, and J. Yoh

Subjects
Nuclear physics, Physics, Luminosity (scattering theory), Proton, Antiproton, law, Physics::Accelerator Physics, General Physics and Astronomy, Sigma, High Energy Physics::Experiment, Collider, Collider Detector at Fermilab, law.invention
Abstract

We present a measurement of $\sigma \cdot B(W \to e \nu)$ and $\sigma \cdot B(Z^0 \to e^+e^-)$ in proton - antiproton collisions at $\sqrt{s} =1.8$ TeV using a significantly improved understanding of the integrated luminosity. The data represent an integrated luminosity of 19.7 pb$^{-1}$ from the 1992-1993 run with the Collider Detector at Fermilab (CDF). We find $\sigma \cdot B(W \to e \nu) = 2.49 \pm 0.12$~nb and $\sigma \cdot B(Z^0 \to e^+e^-) = 0.231 \pm 0.012$~nb.

Published
1996
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38. Search for the Rare DecayW±→π±+γ

Author

T. L. Thomas, P. Bartalini, S. Zhang, A. Barbaro-Galtieri, L. Gladney, L. Song, Y. Cen, R. J. Miller, A. Mukherjee, P. Sphicas, M. T. Cheng, T. Rodrigo, Q. Fan, J. Cammerata, A. Tollestrup, F. Tartarelli, Virgil E Barnes, Robert M Harris, D. Vucinic, A. Caner, T. Devlin, Jose M. Benlloch, T. Kaneko, I. Fiori, Hyun-Chul Kim, G. Piacentino, D. A. Kardelis, F. Zetti, C. Hawk, R. L. Swartz, Marjorie Shapiro, James Bensinger, S. A. Hauger, Gordon Watts, J. F. de Troconiz, R. C. Webb, A. Martin, P. F. Derwent, S. Tkaczyk, S. Lammel, A. Menzione, David Stuart, James Proudfoot, Andrea Castro, E. Buckley-Geer, Riccardo Paoletti, D. Errede, Kazuhiko Hara, S. Segler, A. Hölscher, P. Maas, S. B. Kim, P. Hu, S. E. Kuhlmann, J. Mueller, P. Sinervo, P. Singh, Y. Kato, G. Unal, S. Ogawa, Jing Wang, H. H. Williams, W. Kowald, Mosè Mariotti, Catherine Newman-Holmes, H. Areti, R. D. Kennedy, Stefano Belforte, N. Produit, T. L. Watts, B. T. Huffman, G. P. Yeh, Yasuo Fukui, Andrea Sansoni, S. Donati, R. K. Plunkett, N. M. Shaw, A. Stefanini, Nicola Labanca, F. Bird, Tony Liss, D. Kestenbaum, M. Dell'Orso, B. Denby, T. Okusawa, Henrik Jeldtoft Jensen, A. Scribano, M. Krasberg, Jun Lu, Mark Kruse, S. C. van den Brink, L. Ristori, L. Pondrom, E. Wicklund, Paul Tipton, T. A. Fuess, J. Wolinski, T. Mimashi, M. Dickson, M. Atac, M. Incagli, S. R. Amendolia, J. Yoh, Jakita O. Thomas, K. E. Ohl, D. Theriot, I. Yu, J. E. Elias, T. Chikamatsu, Nicola Bacchetta, J. Romano, Jochen Jens Heinrich, P. Yeh, T. J. Phillips, Henry J. Frisch, Y. Morita, J. Huston, W. Carithers, K. Yasuoka, C. Wei, J. Gonzalez, F. Bedeschi, B. Harral, Alan Sill, G. F. Sciacca, W. Badgett, L. Rosenson, S. Miscetti, S. Leone, M. J. Shochet, Lawrence Nodulman, S. Moulding, N. Uemura, C. B. Luchini, H. Wenzel, F. Ukegawa, H. S. Budd, W. Koska, P. Hurst, Umesh Joshi, J. Cooper, R. M. Keup, S. H. Kim, Duncan Carlsmith, M. Mishina, J. Lys, W. K. Sakumoto, S. Geer, L. E. Kirsch, M. Frautschi, R. Oishi, K. L. Byrum, S. Eno, J. Siegrist, M. P. Schmidt, A. Byon-Wagner, H. Iso, S. Behrends, A. B. Wicklund, M. W. Bailey, P. Giromini, R. J. Hollebeek, Andrew Beretvas, C. H. Wang, M. Lindgren, P. Musgrave, Marina Cobal, M. Binkley, Q. Shen, M. G. Albrow, T. le Compte, R. C. Walker, I. Nakano, H. Kasha, E. E. Schmidt, S. Delchamps, J. I. Lamoureux, G. Bauer, F. D. Snider, X. Wu, S. R. Hahn, D. Y. Wu, K. Sliwa, B. A. Barnett, L. Keeble, Giorgio Apollinari, M. Roach-Bellino, D. Benton, Teruki Kamon, Craig Blocker, D. Crane, A. Zanetti, J.I. Friedman, S. Cihangir, J. D. Cunningham, D. D. Yovanovitch, J. Wyss, C. Couyoumtzelis, Manfred Paulini, G. Bellettini, G. Chiarelli, D. W. Gerdes, C. Bromberg, Kaori Maeshima, J. Bao, D. Glenzinski, A. Grewal, Le Zhang, P. Lukens, H. Y. Chao, Doyeong Kim, G. Sullivan, V. Papadimitriou, C. Grosso-Pilcher, P. K. Teng, M. M. Deninno, W. Bokhari, O. Long, W-M. Yao, F. Keyvan, J. Antos, Jay Hauser, L. Holloway, J. C. Yun, Konstanty Sumorok, H. Keutelian, G. W. Brandenburg, Yongsun Kim, Hong Sj, Nikos Giokaris, M. Yin, C. Pagliarone, A. Maghakian, J. Spalding, O. Schneider, T. Westhusing, P. Koehn, D. Neuberger, S. Galeotti, Sacha E Kopp, E. Kuns, F. Cervelli, P. Wilson, E. Meschi, Sung Keun Park, W. C. Wester, D. Lucchesi, K. Biery, J. Mansour, R. Mattingly, P. Schlabach, R. Ely, T. Baumann, E. Kovacs, G. Houk, C. Nelson, J. Patrick, M. Shimojima, Chris Wendt, M. Cordelli, G. Busetto, R. G. Wagner, M. Franklin, H. Grassmann, Andreas Warburton, T. Boulos, F. de Jongh, S. Mikamo, Daniela Bortoletto, A. Bodek, J. N. Bellinger, Douglas Benjamin, L. Pescara, G. Sganos, S. P. Pappas, S. Funaki, J. C. Freeman, N. Wainer, C. Yosef, A. Sgolacchia, R. P. Thun, Q. F. Wang, J. Steele, Daniel P Cronin-Hennessy, M. Timko, M. Miller, Patrizia Azzi, Kevin Burkett, Wendy Taylor, J. Tseng, J. A.J. Matthews, G. Gagliardi, J. Skarha, T. Yoshida, B. Farhat, Allan G Clark, D. Saltzberg, S. Zucchelli, R. E. Blair, L. Demortier, V. Bolognesi, G. Punzi, C. Campagnari, F. Rimondi, B. L. Winer, E. Engels, J. D. Lewis, Fumio Abe, R. Vidal, K. Takikawa, Y. Seiya, M. Loreti, G. Wang, R. Kephart, P. F. Shepard, S. H. Oh, B. Flaugher, P. Limon, J. Incandela, John Huth, J. W. Chapman, T. Daniels, A. Schindler, Nicola Turini, K. Strahl, A. T. Laasanen, G. Michail, L. Groer, Alan Garfinkel, J. Tonnison, J. Conway, P. McIntyre, P. Kesten, M. J. Wang, R. Wilkinson, A. Titov, Kostantinos Kordas, R. M. Hans, Kiminori Kondo, A. Gordon, E. H. Low, R. E. Hughes, Petar Maksimovic, N. S. Lockyer, Kevin Einsweiler, Dario Bisello, A. Bhatti, C. N. Chiou, F. Ptohos, W. J. Robertson, T. Song, R. L. Wagner, K. Goulianos, R. Hamilton, M. Pillai, Y. Ye, S. Tether, M. Vondracek, C. Loomis, P. de Barbaro, E. Kajfasz, R. W. Kadel, K. Ragan, J. Hylen, M. Gold, G. W. Foster, K. Tollefson, S. Miyashita, Sally Seidel, A. Fry, C. P. Jessop, M. Campbell, M. D. Peters, A. Dunn, D. A. Smith, P. Giannetti, V. Scarpine, R. Handler, S. Dell'Agnello, S. Vejcik, S. Bertolucci, D. Amidei, A. T. Goshaw, H. Mitsushio, F. Azfar, J. Konigsberg, Weiya Zhang, J. P. Berge, S. Errede, T. Takahashi, T. Muller, P. Melese, C. Boswell, Jay Dittmann, Avraham Yagil, Y. Teramoto, Michele Gallinaro, Luca Stanco, L. Christofek, R. B. Drucker, J. P. Marriner, C. Haber, M. Turcotte, P. Auchincloss, L. F. Nakae, Leonard Spiegel, M. Mangano, C. Anway-Wiese, G. Pauletta, M. Contreras, J. Kroll, and James Strait

Subjects
Physics, Particle physics, Text mining, business.industry, General Physics and Astronomy, business
Published
1996
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39. Measurement of the mass of theBs0meson

Author

Jay Hauser, M. Timko, D. A. Kardelis, J. Skarha, T. Yoshida, S. B. Kim, S. Tkaczyk, Sacha E Kopp, R. Ely, Jun Lu, Mark Kruse, N. Produit, Daniela Bortoletto, C. H. Wang, M. Lindgren, Paul Tipton, James Bensinger, P. F. Derwent, M. Krasberg, Kazuhiko Hara, P. Maas, H. Areti, B. Farhat, J. Wolinski, David Stuart, J. N. Bellinger, Yasuo Fukui, Nicola Labanca, T. Okusawa, T. Chikamatsu, J. D. Lewis, Daniel P Cronin-Hennessy, Robert M Harris, Fumio Abe, Y. Morita, J. Huston, L. Holloway, K. Takikawa, P. Melese, M. Gold, T. L. Watts, J. Siegrist, J. Patrick, E. H. Low, R. E. Hughes, G. Bauer, F. Bird, L. Song, F. D. Snider, Andrea Castro, C. Pagliarone, S. Galeotti, Petar Maksimovic, Kevin Burkett, A. Gordon, Jay Dittmann, M. P. Schmidt, D. Lucchesi, H. Y. Chao, F. Keyvan, Mosè Mariotti, S. Vejcik, P. Hu, M. J. Shochet, I. Nakano, G. Unal, T. Kaneko, A. Zanetti, M. Mishina, P. K. Teng, Umesh Joshi, J. Cooper, Y. Teramoto, R. D. Kennedy, Michele Gallinaro, E. Kovacs, A. Hölscher, Jochen Jens Heinrich, R. L. Swartz, Marjorie Shapiro, Alan Sill, R. M. Keup, T. Baumann, G. P. Yeh, T. Song, D. Errede, S. H. Kim, P. Sphicas, F. Tartarelli, D. W. Gerdes, Virgil E Barnes, Tony Liss, E. Buckley-Geer, T. Takahashi, James Mueller, Riccardo Paoletti, Chris Wendt, B. Flaugher, P. Sinervo, J. Incandela, T. Boulos, M. Cordelli, H. Wenzel, F. Ukegawa, W. Carithers, C. Bromberg, Luca Stanco, G. Busetto, Y. Kato, L. Demortier, K. E. Ohl, V. Bolognesi, S. Segler, A. Caner, S. C. van den Brink, A. Scribano, T. A. Fuess, B. T. Huffman, T. Mimashi, M. Dickson, R. G. Wagner, K. Ragan, R. K. Plunkett, Sally Seidel, D. Amidei, Stefano Belforte, A. T. Goshaw, H. Mitsushio, F. Azfar, Henrik Jeldtoft Jensen, J. Spalding, W. K. Sakumoto, O. Schneider, J. Bao, S. P. Pappas, S. Leone, S. Lammel, S. Geer, A. Menzione, C. Haber, M. Turcotte, S. Behrends, Henry J. Frisch, R. Oishi, A. B. Wicklund, W. C. Wester, P. Yeh, L. Ristori, Catherine Newman-Holmes, M. W. Bailey, L. Pondrom, E. Wicklund, P. Limon, A. Dunn, John Huth, S. R. Amendolia, J. W. Chapman, Jakita O. Thomas, I. Yu, J. E. Elias, T. J. Phillips, A. Fry, C. Grosso-Pilcher, C. P. Jessop, E. E. Schmidt, S. Delchamps, H. S. Budd, R. J. Miller, X. Wu, K. Sliwa, D. Crane, D. Y. Wu, T. LeCompte, C. Wei, M. Binkley, Lawrence Nodulman, Q. Shen, S. Errede, M. G. Albrow, S. E. Kuhlmann, D. Glenzinski, A. Mukherjee, H. Keutelian, T. L. Thomas, Nicola Bacchetta, J. Romano, M. Roach-Bellino, A. Grewal, Le Zhang, R. Vidal, J. Hylen, R. L. Wagner, G. W. Brandenburg, G. Sganos, J. Gonzalez, F. Bedeschi, P. Bartalini, A. Byon-Wagner, H. Iso, B. Harral, P. Lukens, Andrea Sansoni, S. Donati, K. Strahl, K. Goulianos, J. Tseng, T. Muller, S. Ogawa, Jing Wang, P. Kesten, A. Titov, Kiminori Kondo, G. W. Foster, P. F. Shepard, S. H. Oh, Doyeong Kim, J. Mansour, J. Lys, R. Mattingly, K. Yasuoka, R. Hamilton, M. Pillai, S. Zhang, A. Schindler, M. Incagli, A. Bodek, P. Hurst, G. Sullivan, V. Papadimitriou, R. C. Walker, A. Barbaro-Galtieri, L. Gladney, R. J. Hollebeek, T. Westhusing, W. Koska, M. Vondracek, C. Loomis, P. de Barbaro, S. Zucchelli, M. T. Cheng, D. Theriot, J. I. Lamoureux, N. M. Shaw, R. E. Blair, B. Denby, E. Kajfasz, C. Yosef, D. Vucinic, P. Koehn, G. Piacentino, G. Michail, F. Rimondi, L. Groer, Alan Garfinkel, S. Tether, S. R. Hahn, J.I. Friedman, P. McIntyre, R. Wilkinson, F. Zetti, C. Hawk, Duncan Carlsmith, J. Yoh, S. Bertolucci, S. Miscetti, Andrew Beretvas, K. Tollefson, M. Shimojima, S. Eno, D. D. Yovanovitch, J. Wyss, G. Chiarelli, I. Fiori, G. Houk, G. Punzi, Weiya Zhang, J. P. Berge, C. Boswell, J. Antos, Andreas Warburton, Hong Sj, B. L. Winer, E. Engels, B. A. Barnett, L. Keeble, M. M. Deninno, Marina Cobal, O. Long, Giorgio Apollinari, J. P. Marriner, Konstanty Sumorok, L. Pescara, James Proudfoot, John Conway, D. Neuberger, M. J. Wang, R. M. Hans, L. Christofek, R. B. Drucker, F. Cervelli, K. Biery, J. D. Cunningham, Teruki Kamon, H. H. Williams, P. Musgrave, G. Bellettini, F. DeJongh, Craig Blocker, P. Schlabach, S. A. Hauger, E. Kuns, W. Kowald, A. Stefanini, W-M. Yao, N. S. Lockyer, P. Auchincloss, C. Nelson, Kaori Maeshima, C. N. Chiou, M. Yin, M. Atac, E. Meschi, Sung Keun Park, J. F. de Troconiz, Dario Bisello, A. Bhatti, M. Franklin, H. Grassmann, F. Ptohos, S. Funaki, W. J. Robertson, S. Miyashita, J. C. Freeman, R. W. Kadel, S. Moulding, N. Uemura, C. B. Luchini, R. C. Webb, A. Martin, M. Frautschi, P. Wilson, M. Campbell, M. D. Peters, D. A. Smith, P. Giannetti, G. Wang, V. Scarpine, R. Handler, S. Dell'Agnello, N. Wainer, A. Sgolacchia, R. P. Thun, Q. F. Wang, J. Steele, Douglas Benjamin, K. L. Byrum, P. Singh, D. Kestenbaum, M. Dell'Orso, Y. Ye, P. Giromini, G. F. Sciacca, W. Badgett, H. Kasha, L. Rosenson, T. Rodrigo, L. E. Kirsch, Hyun-Chul Kim, Gordon Watts, K. Kordas, M. Mangano, D. Benton, S. Cihangir, C. Couyoumtzelis, Manfred Paulini, W. Bokhari, J. C. Yun, Wendy Taylor, J. A.J. Matthews, G. Gagliardi, Yongsun Kim, Allan G Clark, D. Saltzberg, C. Campagnari, M. Loreti, Nikos Giokaris, R. Kephart, A. Maghakian, T. Daniels, Nicola Turini, A. T. Laasanen, J. Konigsberg, Avraham Yagil, L. F. Nakae, Leonard Spiegel, C. Anway-Wiese, G. Pauletta, M. Contreras, J. Kroll, James Strait, Y. Cen, Q. Fan, J. Cammerata, A. Tollestrup, T. Devlin, Jose M. Benlloch, J. Tonnison, Kevin Einsweiler, S. Mikamo, M. Miller, Patrizia Azzi, and Y. Seiya

Subjects
Physics, Statistics::Theory, Nuclear and High Energy Physics, Particle physics, Statistics::Applications, Meson, High Energy Physics::Experiment, Mass measurement, Collider Detector at Fermilab
Abstract

We measure the mass of the ${\mathit{B}}_{\mathit{s}}^{0}$ meson by reconstructing the decay chain ${\mathit{B}}_{\mathit{s}}^{0}$\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\varphi}, J/\ensuremath{\psi}\ensuremath{\rightarrow}${\mathrm{\ensuremath{\mu}}}^{+}$${\mathrm{\ensuremath{\mu}}}^{\mathrm{\ensuremath{-}}}$, and \ensuremath{\varphi}\ensuremath{\rightarrow}${\mathit{K}}^{+}$${\mathit{K}}^{\mathrm{\ensuremath{-}}}$. The data are obtained from 19.3 ${\mathrm{pb}}^{\mathrm{\ensuremath{-}}1}$ of integrated luminosity of p\ifmmode\bar\else\textasciimacron\fi{}p collisions at \ensuremath{\surd}s=1.8 TeV using the Collider Detector at Fermilab. A sample of 80 000 inclusive J/\ensuremath{\psi}\ensuremath{\rightarrow}${\mathrm{\ensuremath{\mu}}}^{+}$${\mathrm{\ensuremath{\mu}}}^{\mathrm{\ensuremath{-}}}$ events is used to study systematic biases in track reconstruction and to calibrate the momentum scale. We reconstruct the kinematically similar decays ${\mathit{B}}^{+}$\ensuremath{\rightarrow}J/\ensuremath{\psi}${\mathit{K}}^{+}$ and ${\mathit{B}}^{0}$\ensuremath{\rightarrow}J/\ensuremath{\psi}${\mathit{K}}^{\mathrm{*}0}$ to study the mass measurement technique used for the ${\mathit{B}}_{\mathit{s}}^{0}$ meson. Based on the observation of 32 \ifmmode\pm\else\textpm\fi{} 6 candidates, the mass of the ${\mathit{B}}_{\mathit{s}}^{0}$ meson is measured to be 5369.9 \ifmmode\pm\else\textpm\fi{} 2.3 \ifmmode\pm\else\textpm\fi{} 1.3 MeV/${\mathit{c}}^{2}$ and the mass difference between ${\mathit{B}}_{\mathit{s}}^{0}$ and the average mass of ${\mathit{B}}^{+}$ and ${\mathit{B}}^{0}$ is determined to be 89.7 \ifmmode\pm\else\textpm\fi{} 2.7 \ifmmode\pm\else\textpm\fi{} 1.2 MeV/${\mathit{c}}^{2}$. \textcopyright{} 1996 The American Physical Society.

Published
1996
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40. Reconstruction ofB0→J/ψKS0and Measurement of Ratios of Branching Ratios InvolvingB→J/ψK*andB+→J/ψK+

Author

M. Cordelli, G. Busetto, R. G. Wagner, K. Ragan, T. Rodrigo, S. P. Pappas, P. Sphicas, M. Gold, F. Tartarelli, Virgil E Barnes, Hyun-Chul Kim, T. Kaneko, A. Caner, J. Tseng, T. L. Thomas, Gordon Watts, K. Kordas, S. Zucchelli, R. E. Blair, F. Rimondi, P. Bartalini, Andrea Sansoni, S. Lammel, A. Menzione, S. Donati, L. Demortier, V. Bolognesi, S. Vejcik, S. E. Kuhlmann, Stefano Belforte, P. Melese, J. D. Lewis, K. Yasuoka, T. LeCompte, M. T. Cheng, W. Koska, Henrik Jeldtoft Jensen, N. M. Shaw, S. Miscetti, M. Mangano, L. Ristori, T. Takahashi, J. W. Chapman, James Mueller, Luca Stanco, P. Limon, John Huth, S. Segler, Doyeong Kim, B. Denby, S. Mikamo, Andrew Beretvas, Marina Cobal, S. Bertolucci, E. H. Low, R. E. Hughes, Weiya Zhang, J. P. Berge, Sally Seidel, Daniela Bortoletto, B. T. Huffman, C. Haber, M. Turcotte, Petar Maksimovic, Nicola Bacchetta, C. Anway-Wiese, J. Romano, J. Yoh, J. D. Cunningham, G. Bellettini, D. Benton, M. Miller, Patrizia Azzi, C. Wendt, G. Pauletta, M. Contreras, J. Konigsberg, S. Cihangir, Avraham Yagil, A. Fry, T. Westhusing, L. F. Nakae, M. Roach-Bellino, S. Eno, Leonard Spiegel, Jakita O. Thomas, F. DeJongh, Tomoko Yoshida, J. Gonzalez, F. Bedeschi, B. Harral, J. Kroll, B. Farhat, Jay Dittmann, S. A. Hauger, James Strait, C. Boswell, H. Y. Chao, F. Keyvan, C. Wei, J. Proudfoot, J. S. Conway, N. Wainer, P. Lukens, G. Sullivan, V. Papadimitriou, Fumio Abe, L. Christofek, R. B. Drucker, T. Song, C. Pagliarone, A. Sgolacchia, R. P. Thun, Q. F. Wang, J. Steele, C. Couyoumtzelis, Michele Gallinaro, C. P. Jessop, Manfred Paulini, Y. Seiya, S. C. van den Brink, S. Galeotti, K. Takikawa, J. F. de Troconiz, W-M. Yao, T. A. Fuess, A. Barbaro-Galtieri, L. Gladney, P. Koehn, D. A. Kardelis, D. Lucchesi, A. T. Goshaw, M. Shimojima, C. H. Wang, M. Lindgren, H. Mitsushio, F. Azfar, J. Spalding, O. Schneider, R. L. Wagner, M. Yin, E. Meschi, S. B. Kim, Andreas Warburton, N. Produit, W. Carithers, Sung Keun Park, R. J. Miller, Mosè Mariotti, W. C. Wester, L. Holloway, I. Fiori, D. Vucunic, K. Goulianos, W. Bokhari, A. Mukherjee, M. Krasberg, R. C. Webb, A. Martin, S. Errede, J. Wolinski, R. C. Walker, L. Pescara, L. Nodulman, T. Chikamatsu, R. Oishi, J. Patrick, R. Hamilton, M. Pillai, M. Vondracek, C. Loomis, P. de Barbaro, B. A. Barnett, L. Keeble, Robert M Harris, Giorgio Apollinari, D. Amidei, S. R. Hahn, T. Muller, J. Bao, A. Gordon, K. Biery, Teruki Kamon, J. C. Yun, P. Musgrave, Craig Blocker, E. Kajfasz, Yongsun Kim, Nikos Giokaris, A. Maghakian, H. H. Williams, R. W. Kadel, M. W. Bailey, P. Auchincloss, S. Tkaczyk, David Stuart, M. J. Shochet, G. Bauer, F. D. Snider, J. Siegrist, Kaori Maeshima, J. Antos, K. E. Ohl, A. Dunn, L. Song, Andrea Castro, M. P. Schmidt, I. Nakano, R. Ely, Konstanty Sumorok, W. Kowald, A. Stefanini, Y. Teramoto, A. Zanetti, M. Atac, D. Errede, G. Piacentino, K. Strahl, F. Zetti, C. Hawk, P. Wilson, G. P. Yeh, G. Punzi, B. L. Winer, Jun Lu, D. W. Gerdes, Mark Kruse, P. Hu, G. Unal, R. D. Kennedy, E. Engels, W. K. Sakumoto, P. K. Teng, Paul Tipton, T. L. Watts, C. Bromberg, J. P. Marriner, Tony Liss, J. Tonnison, S. Miyashita, Y. Kato, T. Boulos, S. Geer, R. L. Swartz, Marjorie Shapiro, M. Timko, F. Bird, J. Skarha, A. Scribano, R. Kephart, C. Grosso-Pilcher, T. Mimashi, S. Moulding, N. Uemura, C. B. Luchini, E. Buckley-Geer, Riccardo Paoletti, M. Dickson, Alan Sill, Catherine Newman-Holmes, P. Sinervo, M. Frautschi, G. Houk, F. Ptohos, W. J. Robertson, S. Leone, T. J. Phillips, Kevin Einsweiler, H. S. Budd, Y. Morita, K. L. Byrum, P. Giromini, H. Kasha, M. Binkley, Q. Shen, M. G. Albrow, P. Hurst, R. Vidal, M. Campbell, M. D. Peters, D. A. Smith, P. Giannetti, V. Scarpine, R. Handler, D. D. Yovanovitch, J. Wyss, G. Chiarelli, M. M. Deninno, O. Long, E. Kovacs, A. Hölscher, E. Kuns, S. Dell'Agnello, P. F. Shepard, S. H. Oh, A. Schindler, B. Flaugher, Jay Hauser, Sijing Zhang, J. Incandela, P. Kesten, G. Sganos, G. Michail, J. R. Bensinger, L. Groer, Alan Garfinkel, P. McIntyre, A. Titov, Sacha E Kopp, Kiminori Kondo, R. Wilkinson, P. Yeh, J. N. Bellinger, Daniel P Cronin-Hennessy, M. J. Wang, R. M. Hans, Kevin Burkett, Wendy Taylor, J. A.J. Matthews, G. Gagliardi, N. S. Lockyer, C. N. Chiou, Allan G Clark, R. K. Plunkett, D. Saltzberg, S. Tether, K. Tollefson, C. Campagnari, M. Loreti, T. Daniels, Nicola Turini, A. T. Laasanen, Jochen Jens Heinrich, S. Ogawa, Jing Wang, H. Wenzel, F. Ukegawa, M. Incagli, D. Theriot, L. Pondrom, E. Wicklund, Duncan Carlsmith, M. Mishina, I. Yu, J. E. Elias, S. Behrends, A. B. Wicklund, E. E. Schmidt, S. Delchamps, D. Y. Wu, J. Lys, A. Grewal, Le Zhang, J.I. Friedman, G. W. Brandenburg, Y. Cen, Q. Fan, J. Cammerata, A. Tollestrup, T. Devlin, Jose M. Benlloch, D. Neuberger, M. Franklin, H. Grassmann, J. Hylen, G. W. Foster, S. Funaki, J. C. Freeman, P. Singh, D. Kestenbaum, M. Dell'Orso, Y. Ye, G. F. Sciacca, W. Badgett, L. Rosenson, D. Glenzinski, H. Keutelian, L. E. Kirsch, F. Cervelli, P. Schlabach, J. Mansour, R. Mattingly, G. Wang, C. Nelson, A. Bodek, C. Yosef, Douglas Benjamin, Umesh Joshi, J. Cooper, R. M. Keup, A. Byon-Wagner, H. Iso, S. H. Kim, R. J. Hollebeek, J. I. Lamoureux, S. R. Amendolia, X. Wu, Hong Sj, K. Sliwa, D. Crane, P. F. Derwent, Kazuhiko Hara, P. Maas, H. Areti, Yasuo Fukui, Nicola Labanca, T. Okusawa, J. Huston, Dario Bisello, A. Bhatti, and T. Baumann

Subjects
Physics, Crystallography, Meson, Branching fraction, General Physics and Astronomy, High Energy Physics::Experiment, Branching (polymer chemistry), Collider Detector at Fermilab, Bar (unit)
Abstract

We report on the reconstruction of the decay mode B{sup 0o} {yields} J/{psi}K{sup 0}{sub s} using 19.3 pb{sup -1} of data collected by the Collider Detector at Fermilab in p{bar p} collisions at sqrt[s] = 1.8 TeV. A signal of 41.8{+-}6.9 events, with a signal-to-background ratio of 9:1, is observed. Three additional decay modes B{sup +} {yields} J/{psi}K{sup +}, B{sup 0} {yields} J/{psi}K{sup *}(892){sup 0}, and B{sup +} {yields} J/{psi}K{sup *}(892){sup +} are reconstructed. We measure three ratios of branching ratios, each one relative to the B{sup +} {yields} J/{psi}K{sup +} mode. We also report the ratio of decay rates, {gamma}(B {yields} J/{psi}K{sup *})/{gamma}(B {yields} J/{psi}K), for the vector-vector relative to the vector-pseudoscalar modes, to be 1.32{+-}0.23(stat){+-}0.16(syst).

Published
1996
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41. ϒProduction inpp¯Collisions ats=1.8TeV

Author

W. Carithers, D. Benton, S. Cihangir, D. Kestenbaum, J. Bao, G. Piacentino, J. C. Yun, J. C.L. Tseng, R. Mattingly, Yongsun Kim, A. Maghakian, J. Siegrist, S. Miscetti, T. M. Liss, D. H. Kim, L. Rosenson, Giorgio Chiarelli, M. P. Schmidt, S. R. Hahn, Marina Cobal, C. Couyoumtzelis, P. Schlabach, S. Behrends, J. D. Cunningham, S. Ogawa, H. Wenzel, Kevin Burkett, Konstanty Sumorok, C. Bromberg, L. E. Kirsch, C. H. Wang, A. Mukherjee, J. D. Lewis, H. S. Kim, Y. Ye, J. S. Conway, Gordon Watts, N. Wainer, E. H. Low, M. Lindgren, Petar Maksimovic, A. Sgolacchia, R. P. Thun, J. Steele, L. Song, F. DeJongh, A. Byon-Wagner, J. Proudfoot, T. Song, M. Incagli, H. Iso, L. Stanco, J. Hylen, J. F. de Trocóniz, S. Mikamo, W-M. Yao, A. T. Goshaw, C. Pagliarone, S. Galeotti, P. Bartalini, Stefano Belforte, R. J. Hollebeek, Thomas LeCompte, M. J. Wang, G. W. Foster, M. Yin, H. Grassmann, Thomas Müller, D. Glenzinski, D. Theriot, E. Meschi, F. Azfar, H. Mitsushio, O. Schneider, Jian Wang, Patrizia Azzi, J. Wolinski, R. Wilkinson, U. Joshi, Stephan Lammel, Henrik Jeldtoft Jensen, S. Donati, Xin Wu, M. Franklin, T. Baumann, A. Gordon, Wendy Taylor, J. A.J. Matthews, L. Holloway, M. Timko, Andrea Sansoni, P. Singh, S. Errede, Y. Seiya, S. Funaki, D. P. Benjamin, Joachim Heinrich, M. Roach-Bellino, Duncan Carlsmith, N. S. Lockyer, M. Cordelli, P. Yeh, G. Busetto, Brian L Winer, D. Errede, Seungbum Hong, P. Lukens, Mark Campbell, R. G. Wagner, F. Zetti, C. Hawk, Guillaume Unal, Y. Cen, C. N. Chiou, Daniela Bortoletto, J. C. Freeman, R. L. Swartz, Marjorie Shapiro, Bruce Denby, K. Yasuoka, J. Tonnison, J. Romano, S. Miyashita, Giovanni Bellettini, G. Sganos, S. P. Pappas, R. M. Harris, A. Castro, Jason Dhia Mansour, K. L. Byrum, M. Mishina, P. Giromini, Anna Zanetti, H. Kasha, Fumihiko Ukegawa, E. Buckley-Geer, B. Harral, Joe Incandela, S. E. Kuhlmann, M. Krasberg, G. Sullivan, S. Segler, V. Scarpine, A. Yagil, Giorgio Apollinari, W. Koska, B. Farhat, P. Koehn, Qian Wang, T. L. Watts, P. Hu, P. Sinervo, V. Papadimitriou, A. Barbaro-Galtieri, K. Kordas, R. Paoletti, Gianfranco Sciacca, Christina Nelson, Y. Kato, D. Neuberger, R. K. Plunkett, A. B. Wicklund, H. Keutelian, Virgil E Barnes, P. Kesten, E. E. Schmidt, S. Delchamps, T. Boulos, Kevin Einsweiler, F. Bird, Fumio Abe, C. Wendt, D. A. Kardelis, J. Skarha, A. J. Martin, J. Lys, K. Takikawa, D. Vucinic, M. Mangano, S. C. van den Brink, A. M. Stefanini, Claudio Campagnari, N. M. Shaw, M. Dickson, Jay Dittmann, T. Kaneko, Jakita O. Thomas, N. Produit, R. Kephart, C. Wei, Andrew Beretvas, M. Loreti, Dario Bisello, J.I. Friedman, A. Bhatti, I. Fiori, M. J. Shochet, Henry J. Frisch, N. Giokaris, E. Kovacs, D. Y. Wu, S. Tether, Catherine Newman-Holmes, D. Cronin-Hennessy, A. Grewal, L. Nodulman, A. Menzione, J. Yoh, T. Chikamatsu, R. E. Blair, F. Rimondi, T. Daniels, Alan Sill, D. Crane, Michele Gallinaro, G. W. Brandenburg, Sarah Catherine Eno, A. Hölscher, F. D. Snider, Nicola Turini, A. T. Laasanen, L. Pescara, G. Punzi, Jay Hauser, Nicola Bacchetta, Luchan Zhang, Paola Giannetti, B. A. Barnett, L. Keeble, F. Cervelli, P. K. Teng, A. G. Clark, Teruki Kamon, P. Musgrave, Stefano Zucchelli, Craig Blocker, Ronald E. Miller, K. Ragan, Sacha E Kopp, H. Y. Chao, Kaori Maeshima, F. Keyvan, J. Antos, Robert P. Ely, E. Engels, D. W. Gerdes, H. S. Budd, Y. Teramoto, L. Pondrom, E. Wicklund, Jun Lu, Mark Kruse, H. H. Williams, Bt Huffman, P. Wilson, W. Kowald, S. Park, Sally Seidel, J. P. Marriner, José Manuel Rodríguez González, M. Atac, Manfred Paulini, J. E. Elias, S. A. Hauger, Paul Tipton, J. N. Bellinger, R. Hughes, Q. Fan, J. Cammerata, R. W. Kadel, A. Tollestrup, J. Spalding, L. Ristori, T. Devlin, W. C. Wester, K. Tollefson, L. F. Nakae, Leonard Spiegel, T. A. Fuess, R. C. Webb, Tomoko Yoshida, C. Anway-Wiese, M. Miller, D. Amidei, Jose M. Benlloch, T. L. Thomas, E. Kajfasz, Jacobo Konigsberg, G. Pauletta, M. T. Cheng, I. Yu, James Strait, N. Uemura, C. B. Luchini, M. Frautschi, L. Demortier, B. Flaugher, P. Sphicas, K. Biery, V. Bolognesi, P. Limon, John Huth, A. Titov, Kiminori Kondo, A. Caner, S. Bertolucci, Weiya Zhang, J. P. Berge, C. Boswell, L. Christofek, R. B. Drucker, P. Auchincloss, F. Ptohos, W. J. Robertson, W. Bokhari, J. Kroll, M. D. Peters, M. W. Bailey, S. Moulding, R. Handler, S. Dell'Agnello, A. Fry, C. P. Jessop, R. L. Wagner, K. Goulianos, R. Hamilton, M. Pillai, M. Vondracek, C. Loomis, P. de Barbaro, Franco Bedeschi, F. Tartarelli, M. Contreras, M. Gold, Gerry Bauer, Reiyo Oishi, David Saltzberg, Guido Gagliardi, S. Vejcik, P. Melese, T. Takahashi, J. W. Chapman, James Mueller, Mauro Dell'Orso, C. Haber, M. Turcotte, S. Tkaczyk, David Stuart, Shuang Zhang, G. P. Yeh, A. Dunn, P. F. Derwent, T. Mimashi, Teresa Rodrigo, K. Strahl, T. J. Phillips, Larry D. Gladney, J. I. Lamoureux, Y. Morita, P. Hurst, D. D. Yovanovitch, J. Wyss, M. M. Deninno, O. Long, E. Kuns, R. C. Walker, A. Scribano, Kazuhiko Hara, Gensheng Wang, J. F. Patrick, P. Maas, H. Areti, Yasuo Fukui, Nicola Labanca, T. Okusawa, S. B. Kim, M. G. Albrow, J. Huston, D. Lucchesi, R. M. Hans, Dominic Smith, T. Westhusing, W. Badgett, J. Cooper, R. M. Keup, S. H. Kim, M. Shimojima, Andreas Warburton, S. R. Amendolia, K. Sliwa, R. Vidal, M. Binkley, P. F. Shepard, S. H. Oh, A. Schindler, Itsuo Nakano, G. Michail, J. R. Bensinger, L. Groer, Alan Garfinkel, Qun Shen, P. McIntyre, Mosè Mariotti, Sandra Leone, K. E. Ohl, W. K. Sakumoto, S. Geer, C. Grosso-Pilcher, G. Houk, R. D. Kennedy, A. Bodek, and C. Yosef

Subjects
Physics, Quantum chromodynamics, Particle physics, General Physics and Astronomy, Order (ring theory), High Energy Physics::Experiment, Collider Detector at Fermilab
Abstract

We report on measurements of the $\ensuremath{\Upsilon}(1S)$, $\ensuremath{\Upsilon}(2S)$, and $\ensuremath{\Upsilon}(3S)$ differential, ${(\frac{{d}^{2}\ensuremath{\sigma}}{d{P}_{t}\mathrm{dy}})}_{y=0}$, and integrated cross sections in $p\overline{p}$ collisions at $\sqrt{s}=1.8$ TeV using a sample of 16.6 \ifmmode\pm\else\textpm\fi{} 0.6 ${\mathrm{pb}}^{\ensuremath{-}1}$ collected by the Collider Detector at Fermilab. The three resonances were reconstructed through the decay $\ensuremath{\Upsilon}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$. Comparison is made to a leading order QCD prediction.

Published
1995
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42. Measurement of the Polarization in the DecaysBd→J/ψK*0andBs→J/ψφ

Author

Sally Seidel, S. Mikamo, S. Vejcik, T. Takahashi, S. Zhang, A. Fry, S. Miscetti, Luca Stanco, G. Brandenburg, C. Haber, M. Turcotte, A. Barbaro-Galtieri, L. Gladney, D. Vucinic, I. Fiori, Stefano Belforte, L. Ristori, Doyeong Kim, Nicola Bacchetta, J. Romano, J. Gonzalez, F. Bedeschi, B. Harral, Wendy Taylor, J. A.J. Matthews, G. Gagliardi, Allan G Clark, J. D. Lewis, K. L. Byrum, P. Giromini, H. Kasha, C. P. Jessop, James Proudfoot, Dario Bisello, A. Bhatti, R. J. Miller, Umesh Joshi, J. Cooper, R. M. Keup, S. H. Kim, T. Westhusing, D. Saltzberg, C. Campagnari, M. Loreti, R. Kephart, T. Daniels, Kostantinos Kordas, E. H. Low, R. E. Hughes, Petar Maksimovic, P. Singh, D. Kestenbaum, M. Dell'Orso, S. Miyashita, T. Boulos, A. Mukherjee, N. Wainer, A. Sgolacchia, R. P. Thun, Q. F. Wang, J. Steele, H. Jensen, Marina Cobal, J. D. Cunningham, S. Bertolucci, Weiya Zhang, J. P. Berge, C. Boswell, X. Wu, K. Sliwa, D. Crane, Nicola Turini, A. T. Laasanen, M. Franklin, H. Grassmann, G. F. Sciacca, W. Badgett, L. Christofek, R. B. Drucker, G. Bellettini, S. Funaki, L. Rosenson, J. Siegrist, M. P. Schmidt, I. Nakano, C. Bromberg, P. Auchincloss, P. Sphicas, F. Tartarelli, Virgil E Barnes, J. C. Freeman, S. Tkaczyk, David Stuart, Y. Cen, L. E. Kirsch, M. Roach-Bellino, T. Song, G. Piacentino, F. Zetti, C. Hawk, G. P. Yeh, Tony Liss, P. Lukens, S. A. Hauger, H. Y. Chao, F. Keyvan, Q. Fan, T. Mimashi, A. Caner, M. Dickson, Y. Ye, J. Hylen, M. Timko, J. Cammerata, A. Tollestrup, T. Devlin, G. Sullivan, V. Papadimitriou, Andreas Warburton, J. F. de Troconiz, Robert M Harris, T. J. Phillips, J. Skarha, S. Lammel, A. Menzione, T. Yoshida, Y. Morita, S. Tether, G. Wang, J. Spalding, O. Schneider, G. W. Foster, Jose M. Benlloch, P. Koehn, J. Konigsberg, D. Benton, S. Cihangir, T. L. Watts, W. C. Wester, Andrea Castro, S. Ogawa, K. Tollefson, Avraham Yagil, C. Couyoumtzelis, Manfred Paulini, J. Lys, F. Bird, T. LeCompte, Jochen Jens Heinrich, P. Hurst, Andrea Sansoni, Jing Wang, J. Mueller, S. Donati, P. Hu, G. Unal, W. Bokhari, J. C. Yun, L. Pescara, R. C. Webb, A. Martin, K. Yasuoka, F. Cervelli, R. D. Kennedy, D. D. Yovanovitch, J. Wyss, P. Schlabach, J.I. Friedman, H. Wenzel, F. Ukegawa, G. Chiarelli, Yongsun Kim, M. Incagli, W. Koska, C. Nelson, Alan Sill, C. H. Wang, M. M. Deninno, T. L. Thomas, Nikos Giokaris, A. Maghakian, Jun Lu, Mark Kruse, L. F. Nakae, O. Long, P. Bartalini, M. Lindgren, N. M. Shaw, R. C. Walker, B. Denby, D. Theriot, A. Dunn, Andrew Beretvas, Leonard Spiegel, T. Rodrigo, Paul Tipton, S. R. Hahn, Douglas Benjamin, E. Kuns, S. Leone, J. Yoh, L. Holloway, D. Neuberger, H. S. Budd, Hyun-Chul Kim, M. T. Cheng, F. Ptohos, W. J. Robertson, E. Kovacs, Gordon Watts, J. Patrick, Jay Hauser, R. W. Kadel, Duncan Carlsmith, J. Antos, P. Melese, Konstanty Sumorok, M. J. Wang, M. Campbell, Sacha E Kopp, M. D. Peters, D. A. Smith, P. Giannetti, R. Ely, R. M. Hans, R. L. Wagner, V. Scarpine, K. Goulianos, R. Handler, L. Pondrom, E. Wicklund, G. Punzi, S. Dell'Agnello, S. Segler, B. L. Winer, E. Engels, S. R. Amendolia, Jay Dittmann, C. Anway-Wiese, N. S. Lockyer, J. N. Bellinger, J. P. Marriner, C. N. Chiou, M. Shimojima, I. Yu, J. E. Elias, R. Hamilton, M. Pillai, Daniel P Cronin-Hennessy, B. T. Huffman, M. Vondracek, C. Loomis, A. Byon-Wagner, B. Flaugher, H. Iso, P. de Barbaro, J. Incandela, E. Kajfasz, R. J. Hollebeek, Y. Teramoto, K. Ragan, M. Miller, Kevin Burkett, J. Conway, J. I. Lamoureux, R. K. Plunkett, P. Kesten, Michele Gallinaro, A. Titov, Kiminori Kondo, Patrizia Azzi, G. Pauletta, M. Contreras, S. C. van den Brink, M. Gold, T. A. Fuess, H. H. Williams, W. Kowald, A. Stefanini, P. Yeh, Hong Sj, M. Atac, Lawrence Nodulman, J. Kroll, Y. Seiya, James Strait, Jakita O. Thomas, A. Scribano, C. Wei, R. Oishi, S. Moulding, N. Uemura, C. B. Luchini, M. Frautschi, D. Amidei, A. T. Goshaw, H. Mitsushio, F. Azfar, M. W. Bailey, L. Demortier, S. Errede, V. Bolognesi, L. Song, T. Muller, M. Binkley, Q. Shen, M. G. Albrow, T. Kaneko, M. Mishina, R. L. Swartz, Marjorie Shapiro, P. Limon, John Huth, J. W. Chapman, E. Buckley-Geer, Riccardo Paoletti, D. A. Kardelis, P. Sinervo, M. Mangano, S. B. Kim, N. Produit, S. Behrends, M. Krasberg, D. Errede, A. Hölscher, J. Wolinski, T. Chikamatsu, A. B. Wicklund, G. Bauer, F. D. Snider, Y. Kato, P. Musgrave, E. E. Schmidt, S. Eno, Catherine Newman-Holmes, D. W. Gerdes, F. DeJongh, W-M. Yao, S. Delchamps, M. Yin, E. Meschi, Sung Keun Park, T. Baumann, M. Cordelli, G. Busetto, R. G. Wagner, G. Sganos, S. P. Pappas, D. Y. Wu, J. Tonnison, Daniela Bortoletto, W. Carithers, A. Grewal, B. Farhat, J. Tseng, Fumio Abe, K. Takikawa, M. J. Shochet, S. Zucchelli, R. E. Blair, A. Zanetti, Le Zhang, F. Rimondi, J. Bao, P. K. Teng, Kevin Einsweiler, K. Strahl, B. A. Barnett, L. Keeble, R. Vidal, Giorgio Apollinari, P. F. Shepard, S. H. Oh, A. Schindler, Teruki Kamon, Craig Blocker, G. Michail, L. Groer, Alan Garfinkel, P. McIntyre, Kaori Maeshima, R. Wilkinson, A. Gordon, P. Wilson, Mosè Mariotti, James Bensinger, P. F. Derwent, Kazuhiko Hara, K. E. Ohl, W. K. Sakumoto, S. Geer, P. Maas, H. Areti, C. Grosso-Pilcher, G. Houk, Yasuo Fukui, C. Pagliarone, S. Galeotti, Nicola Labanca, T. Okusawa, D. Lucchesi, K. Biery, Chris Wendt, J. Huston, D. Glenzinski, H. Keutelian, Steve Kuhlmann, J. Mansour, R. Mattingly, A. Bodek, and C. Yosef

Subjects
Physics, Crystallography, Meson, General Physics and Astronomy, Polarization (waves), Collider Detector at Fermilab
Abstract

This Letter reports on measurements of the longitudinal polarization fractions in the decays {ital B}{sub {ital d}}{r_arrow}{ital J}/{psi}{ital K}{sup *0} and {ital B}{sub {ital s}}{r_arrow}{ital J}/{psi}{phi} using data collected with the Collider Detector at Fermilab. {ital B}{sub {ital d}} mesons are reconstructed through the decay chain {ital B}{sub {ital d}}{r_arrow}{ital J}/{psi}{ital K}*, {ital J}/{psi}{r_arrow}{mu}{sup +}{mu}{sup {minus}}, {ital K}{sup *0}{r_arrow}{ital K}{sup +}{pi}{sup {minus}}. A sample of 65{plus_minus}10{ital B}{sub {ital d}} events is used to obtain a longitudinal polarization fraction of {Gamma}{sub {ital L}}/{Gamma}=0.65{plus_minus}0.10(stat){plus_minus}0.04(syst). {ital B}{sub {ital s}} mesons are reconstructed through the decay chain {ital B}{sub {ital s}}{r_arrow}{ital J}/{psi}{phi}, {ital J}/{psi}{r_arrow}{mu}{sup +}{mu}{sup {minus}}, {phi}{r_arrow}{ital K}{sup +}{ital K}{sup {minus}}. A sample of 19{plus_minus}5{ital B}{sub {ital s}} events is used to obtain the result {Gamma}{sub {ital L}}/{Gamma}=0.56{plus_minus}0.21(stat){sub {minus}0.04}{sup +0.02}(syst). Copyright {ital 1995} {ital The} {ital American} {ital Physical} {ital Society}.

Published
1995
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43. Measurement of the ratio σB(pp¯→W→eν)/σB(pp¯→Z0→ee) inpp¯collisions at √s=1800 GeV

Author

K. Einsweiler, J. Hylen, J. E. Elias, J. Huston, A. Grewal, W. Carithers, E. E. Schmidt, E. Kajfasz, G. Bauer, F. Bedeschi, V. E. Barnes, Q. Shen, S. R. Amendolia, D. Y. Wu, T. Song, L. Groer, K. Sumorok, Richard Hughes, J. Gonzalez, K. Goulianos, F. Bird, J. Patrick, H. Areti, K. Biery, O. Long, G. Houk, Jun Lu, Mark Kruse, T. J. Phillips, Paul Tipton, S. Kopp, K. Burkett, M. Vondracek, R. B. Drucker, G. P. Yeh, Marina Cobal, T. Chikamatsu, G. W. Foster, B. Flaugher, H. Grassmann, L. Spiegel, F. Azfar, J. Lys, T. Kamon, Saehanseul Oh, F. Dejongh, M. Franklin, Tony Liss, J. Tonnison, I. Nakano, J. D. Cunningham, J. Konigsberg, C. Grosso-Pilcher, P. Koehn, C. Newman-Holmes, S. Dell'Agnello, P. Sphicas, S. Geer, N. M. Shaw, B. A. Barnett, C. Boswell, J. Tseng, G. Watts, M. Binkley, J. I. Lamoureux, C. Bromberg, D. Bortoletto, J. Wyss, A. Hölscher, S. Vejcik, C. Wendt, P. Hurst, P. Schlabach, N. Lockyer, K. Takikawa, T. Yoshida, R. W. Kadel, E. H. Low, D. Crane, A. G. Clark, P. Lukens, L. Pescara, H. Keutelian, S. Zucchelli, A. Titov, W. K. Sakumoto, L. Zhang, D. Amidei, M. Gold, D. Glenzinski, J. Proudfoot, A. Beretvas, John Wehrley Chapman, G. Chiarelli, S. Donati, S. van den Brink, H. Kasha, P. Bartalini, M. L. Miller, D. Benjamin, R. Kephart, J. Friedman, G. Busetto, Y. Morita, X. Wu, D. Yovanovitch, Y. Cen, J. Kroll, S. Cihangir, P. Musgrave, L. Rosenson, W. Yao, D. Benton, K. Strahl, P. F. Derwent, C. Hawk, S. Seidel, K. Tollefson, W. C. Wester, A. Caner, S. Delchamps, D. A. Smith, W. Koska, W. Zhang, R. M. Hans, H. Mitsushio, M. Frautschi, T. Okusawa, R. M. Keup, F. Keyvan, Y. Fukui, S. A. Hauger, E. Kuns, R. Paoletti, M. Campbell, G. Apollinari, J. Spalding, S. Miyashita, B. Harral, R. L. Wagner, S. Miscetti, J. Skarha, J. Romano, S. Hong, J. Steele, T. Daniels, R. Oishi, E. Engels, M. D. Peters, J. Huth, Peter McIntyre, J. Incandela, M. J. Wang, F. D. Snider, P. Yeh, A. J. Martin, B. Denby, Sangjin Kim, G. Pauletta, Gerald J. Wang, K. Kordas, D. Saltzberg, S. Errede, F. Tartarelli, J. Bensinger, Jose M. Benlloch, R. Hollebeek, A. Fry, S. Segler, Y. K. Kim, H. Wenzel, C. Nelson, S. Lammel, T. Lecompte, L. Ristori, L. Nodulman, M. Contreras, J. Wang, G. F. Sciacca, T. Westhusing, J. F. de Troconiz, C. Yousef, R. Thun, K. L. Byrum, I. Yu, A. Tollestrup, M. Dickson, A. Warburton, L. Pondrom, C. P. Jessop, D. Carlsmith, L. Song, J.R. Dittman, J. Freeman, G. Sullivan, P. Melese, A. Dunn, S. Funaki, J. Hauser, J. Antos, U. Joshi, W. J. Robertson, F. Abe, R. Vidal, C. Pagliarone, T. Kaneko, V. Papadimitriou, Meng Cheng, O. Schneider, T. Boulos, A. Stefanini, D. Stuart, D. Lucchesi, J. P. Berge, K. Kondo, F. Rimondi, A. Zanetti, R. M. Harris, S. Tether, A. Menzione, J. P. Marriner, R. E. Blair, H. Y. Chao, D. A. Kardelis, A. Barbaro-Galtieri, J. Siegrist, P. Maas, M. Dell'Orso, C. Anway-Wiese, C. Loomis, A. Sansoni, S. Mikamo, J. A J Matthews, M. Shapiro, H. H. Williams, G. Unal, P. Auchincloss, W. Taylor, G. Bellettini, A. Bhatti, A. Schindler, N. Turini, D. Cronin-Hennessy, J. D. Lewis, A. Mukherjee, D. Errede, C. Couyoumtzelis, W. Bokhari, T. Baumann, A. Spies, A. Scribano, R. G. Wagner, L. Holloway, G. Brandenburg, K. Sliwa, C. Haber, J. Wolinski, M. Roach-Bellino, M. Mangano, M. Timko, L. Gladney, M. Turcotte, J. Bellinger, K. Ragan, R. C. Webb, A. Maghakian, H. Frisch, D. Bisello, W. Badgett, P. Sinervo, M. Shimojima, D. Theriot, R. Wilkinson, G. Sganos, R. C. Walker, E. Meschi, M. Shochet, L. F. Nakae, R. Ely, S. Behrends, S. Ogawa, S. E. Kuhlmann, S. Leone, P. Wilson, Nicola Labanca, T. Takahashi, P. F. Shepard, S. Park, R. Mattingly, E. Wicklund, L. Keeble, M. Incagli, N. Bacchetta, H. S. Kim, G. Gagliardi, S. Eno, L. E. Kirsch, A. T. Laasanen, H. S. Budd, R. Handler, M. P. Schmidt, J. Cammerata, C. Campagnari, Y. Teramoto, P. Maksimovic, J. Conway, M. G. Albrow, M. Cordelli, M. Mishina, D. Kestenbaum, T. Mimashi, D. W. Gerdes, D. Neuberger, M. W. Bailey, A. B. Wicklund, M. Yin, B. T. Huffman, J. Yoh, S. Zhang, E. Buckley-Geer, J. Strait, M. Mariotti, P. Limon, A. Castro, M. Gallinaro, N. Wainer, M. Paulini, T. L. Thomas, F. Cervelli, Y. Kato, J. H. Thomas, D. H. Kim, P. Azzi, P. Giannetti, J. Mansour, M. Atac, J. R. Cooper, S. R. Hahn, R. L. Swartz, A. Yagil, L. Stanco, B. Farhat, W. Kowald, J. Mueller, A. Sgolacchia, K. Hara, S. Belforte, G. Michail, R. Miller, M. Krasberg, N. Uemura, M. Lindgren, N. Produit, A. Bodek, G. Punzi, F. Ukegawa, C. Blocker, Qian Wang, S. Moulding, A. Sill, P. Singh, V. Bolognesi, A. Byon-Wagner, R. D. Kennedy, C. N. Chiou, Y. Seiya, M. Pillai, J. C. Yun, Q. Fan, S. H. Kim, K. Maeshima, Y. Ye, L. Demortier, H. Jensen, V. Scarpine, B. L. Winer, G. Piacentino, P. de Barbaro, M. Deninno, R. Plunkett, F. Zetti, R. Hamilton, M. Loreti, P. Kesten, T. Watts, A. T. Goshaw, H. Iso, T. Devlin, S. Tkaczyk, S. Bertolucci, J. Heinrich, I. Fiori, C. B. Luchini, E. Kovacs, A. F. Garfinkel, F. Ptohos, J. Bao, S. Galeottia, T. Rodrigo, P. Giromini, C. H. Wang, A. Gordon, T. Muller, K. E. Ohl, P. Hu, T. A. Fuess, N. Giokaris, and K. Yasuoka

Subjects
Physics, Gauge boson, Particle physics, Lower limit
Published
1995
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44. Measurement of theBMeson Differential Cross Sectiondσ/dpTinpp¯Collisions at√s=1.8TeV

Author

P. F. Shepard, S. H. Oh, A. Schindler, T. L. Watts, F. Bird, L. Demortier, V. Bolognesi, Y. Cen, S. Segler, Jay Hauser, G. Michail, L. Groer, S. Tkaczyk, David Stuart, Alan Garfinkel, P. McIntyre, H. Y. Chao, R. Wilkinson, F. Keyvan, P. Melese, Q. Fan, Alan Sill, Jay Dittmann, Y. Teramoto, Michele Gallinaro, J. Cammerata, A. Tollestrup, B. T. Huffman, J. Konigsberg, R. K. Plunkett, Sacha E Kopp, D. Amidei, T. Devlin, Jose M. Benlloch, R. Ely, J. D. Lewis, J. Tonnison, S. C. van den Brink, A. Spies, P. Limon, T. A. Fuess, Mosè Mariotti, Avraham Yagil, A. T. Goshaw, H. Mitsushio, F. Azfar, E. Kajfasz, S. Miyashita, S. Errede, T. Baumann, John Huth, J. W. Chapman, J. Spalding, O. Schneider, P. Singh, D. Kestenbaum, M. Mishina, N. Wainer, E. Kovacs, A. Hölscher, M. Dell'Orso, K. E. Ohl, A. Gordon, Jakita O. Thomas, T. Muller, S. Behrends, S. Miscetti, Doyeong Kim, S. Leone, Stefano Belforte, A. Sgolacchia, R. P. Thun, C. Wei, Q. F. Wang, J. Steele, H. Jensen, W. C. Wester, J. N. Bellinger, Daniel P Cronin-Hennessy, Jun Lu, Mark Kruse, A. B. Wicklund, R. Oishi, C. H. Wang, Paul Tipton, M. Lindgren, W. K. Sakumoto, M. Cordelli, G. Busetto, E. E. Schmidt, R. G. Wagner, T. Rodrigo, L. F. Nakae, K. Ragan, S. Geer, H. S. Budd, S. Delchamps, G. P. Yeh, C. Grosso-Pilcher, M. Roach-Bellino, Daniela Bortoletto, P. Lukens, Tony Liss, Kevin Einsweiler, T. Westhusing, Marina Cobal, Kevin Burkett, L. Holloway, J. D. Cunningham, Leonard Spiegel, Andrea Sansoni, S. Donati, G. Bellettini, E. H. Low, L. Ristori, D. Y. Wu, G. Houk, M. W. Bailey, R. J. Miller, A. Grewal, Le Zhang, R. E. Hughes, Jochen Jens Heinrich, J. Patrick, K. Yasuoka, G. Sullivan, V. Papadimitriou, M. Shimojima, P. Sphicas, F. Tartarelli, Virgil E Barnes, G. Punzi, B. L. Winer, E. Engels, B. Farhat, C. Anway-Wiese, W. Koska, S. Mikamo, J. P. Marriner, Andreas Warburton, Nicola Bacchetta, J. Romano, J. Gonzalez, F. Bedeschi, B. Harral, M. Timko, A. Caner, Andrew Beretvas, A. Mukherjee, Hyun-Chul Kim, G. F. Sciacca, P. Koehn, W. Badgett, S. Lammel, A. Menzione, H. Wenzel, F. Ukegawa, M. Miller, Patrizia Azzi, Gordon Watts, J. Skarha, T. Yoshida, T. LeCompte, T. Mimashi, M. Dickson, L. Pescara, T. J. Phillips, C. Pagliarone, S. Galeotti, K. Biery, Fumio Abe, L. Song, S. Zhang, A. Barbaro-Galtieri, L. Gladney, J. Tseng, Petar Maksimovic, T. Boulos, K. Takikawa, D. Vucinic, Y. Seiya, G. Pauletta, M. Contreras, J. Kroll, S. Tether, James Strait, S. Ogawa, Jing Wang, K. Tollefson, H. H. Williams, D. Lucchesi, D. Glenzinski, T. Kaneko, L. Rosenson, W. Kowald, Robert M Harris, A. Stefanini, Andrea Castro, D. A. Kardelis, N. M. Shaw, B. Denby, P. Yeh, Dario Bisello, A. Bhatti, Lawrence Nodulman, S. B. Kim, N. Produit, K. Kordas, Wendy Taylor, J. A.J. Matthews, R. C. Walker, R. L. Swartz, Marjorie Shapiro, G. Gagliardi, P. Hu, J. Yoh, G. Unal, Chris Wendt, M. J. Shochet, M. Krasberg, Allan G Clark, M. Atac, I. Fiori, H. Keutelian, M. Mangano, G. Piacentino, E. Buckley-Geer, Riccardo Paoletti, D. Saltzberg, L. E. Kirsch, J. Wolinski, T. Chikamatsu, Steve Kuhlmann, R. D. Kennedy, B. A. Barnett, L. Keeble, Giorgio Apollinari, A. Zanetti, James Proudfoot, T. Song, S. R. Hahn, P. Sinervo, G. Bauer, Teruki Kamon, P. Musgrave, C. Campagnari, F. D. Snider, P. K. Teng, A. Scribano, A. Byon-Wagner, H. Iso, W. Carithers, J. Antos, M. Incagli, D. Theriot, Craig Blocker, F. Zetti, C. Hawk, Kaori Maeshima, M. Loreti, Y. Ye, Konstanty Sumorok, P. Hurst, Y. Morita, S. Zucchelli, R. E. Blair, F. Rimondi, R. Kephart, D. W. Gerdes, J. Siegrist, T. Daniels, S. Moulding, R. J. Hollebeek, J. Mansour, R. Mattingly, M. P. Schmidt, N. Uemura, C. B. Luchini, Nicola Turini, A. T. Laasanen, P. Wilson, John Conway, S. Eno, J. Bao, I. Nakano, M. Frautschi, Chunjie Wang, G. Sganos, D. D. Yovanovitch, J. Wyss, J. I. Lamoureux, M. Binkley, Duncan Carlsmith, Q. Shen, J. Hylen, G. Chiarelli, C. Bromberg, M. G. Albrow, G. W. Foster, M. M. Deninno, O. Long, K. Strahl, K. L. Byrum, M. J. Wang, P. Giromini, R. M. Hans, E. Kuns, A. Bodek, S. Bertolucci, Weiya Zhang, H. Kasha, C. Yosef, J. P. Berge, D. Benton, N. S. Lockyer, C. Boswell, C. N. Chiou, F. DeJongh, L. Christofek, R. B. Drucker, S. Cihangir, C. Couyoumtzelis, Manfred Paulini, W-M. Yao, M. Yin, E. Meschi, Sung Keun Park, P. Auchincloss, W. Bokhari, J. C. Yun, Yongsun Kim, Nikos Giokaris, Hong Sj, Umesh Joshi, F. Cervelli, J. Cooper, R. M. Keup, P. Schlabach, A. Maghakian, C. Nelson, B. Flaugher, J. Incandela, Douglas Benjamin, S. H. Kim, P. Kesten, A. Titov, Kiminori Kondo, F. Ptohos, W. J. Robertson, R. W. Kadel, M. Campbell, M. D. Peters, D. A. Smith, P. Giannetti, V. Scarpine, R. Handler, S. Dell'Agnello, X. Wu, K. Sliwa, D. Crane, James Bensinger, P. F. Derwent, Kazuhiko Hara, P. Maas, H. Areti, Yasuo Fukui, Nicola Labanca, L. Pondrom, E. Wicklund, T. Okusawa, S. R. Amendolia, J. Huston, I. Yu, J. E. Elias, M. Franklin, H. Grassmann, S. Funaki, J. C. Freeman, G. Wang, J. Lys, J.I. Friedman, D. Neuberger, D. Errede, Y. Kato, Catherine Newman-Holmes, T. L. Thomas, P. Bartalini, M. T. Cheng, S. A. Hauger, J. F. de Troconiz, R. C. Webb, A. Martin, R. L. Wagner, K. Goulianos, R. Hamilton, M. Pillai, M. Vondracek, C. Loomis, P. de Barbaro, Sally Seidel, A. Fry, C. P. Jessop, M. Gold, A. Dunn, S. Vejcik, T. Takahashi, James Mueller, Luca Stanco, G. Brandenburg, C. Haber, M. Turcotte, and R. Vidal

Subjects
Physics, Particle physics, Meson, High Energy Physics::Phenomenology, Hadron, General Physics and Astronomy, Order (ring theory), Elementary particle, Quarkonium, Particle decay, Quantum mechanics, High Energy Physics::Experiment, B meson, Collider Detector at Fermilab
Abstract

This paper presents the first direct measurement of the $B$ meson differential cross section $d\ensuremath{\sigma}{/dp}_{T}$ in $p\overline{p}$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8$ TeV using a sample of $19.3\ifmmode\pm\else\textpm\fi{}0.7$ p${\mathrm{b}}^{--1}$ accumulated by the Collider Detector at Fermilab. The cross section is measured in the central rapidity region $|y|l1$ for ${p}_{T}\left(B\right)g6.0$ GeV $/c$ by fully reconstructing the $B$ meson decays ${B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+}$ and ${B}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{*0}\left(892\right)$, where $J/\ensuremath{\psi}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ and ${K}^{*0}\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$. A comparison is made to the theoretical QCD prediction calculated at next-to-leading order.

Published
1995
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45. Search for Second Generation Leptoquarks inpp¯Collisions ats=1.8TeV

Author

R. G. Wagner, K. Yasuoka, A. Sansoni, S. Zucchelli, R. E. Blair, F. Rimondi, E. Kuns, J. C. Yun, H. Iso, W-M. Yao, E. Meschi, Sung Keun Park, S. Cihangir, J. D. Lewis, H. Grassmann, J. Tseng, F. Tartarelli, R. Plunkett, P. Singh, N. Turini, Virgil E Barnes, K. Goulianos, Giorgio Apollinari, M. Dell'Orso, J. Siegrist, K. Biery, N. Giokaris, H. Y. Chao, J. A. J. Matthews, G. Houk, D. W. Gerdes, R. L. Wagner, S. Donati, A. Dunn, R. W. Kadel, B. Flaugher, Teruki Kamon, P. Maksimovic, Y. Ye, J. Heinrich, D. Errede, Q. Shen, C. Campagnari, H. H. Williams, S. Lammel, W. Kowald, T. Westhusing, P. Hurst, F. DeJongh, C. Bromberg, H. Frisch, S. Tkaczyk, David Stuart, E. H. Low, D. Bisello, Y. Kato, R. E. Hughes, Y. Cen, S. Funaki, M. Paulini, S. Moulding, L. Keeble, J. Hylen, G. W. Foster, R. J. Miller, S. Leone, F. Ukegawa, J. Wolinski, G. P. Yeh, W. Koska, S. Zhang, T. LeCompte, M. Campbell, C. Yosef, Catherine Newman-Holmes, C. Loomis, V. Papadimitriou, G. Wang, R. Hamilton, M. Pillai, James Bensinger, A. Maghakian, G. Bauer, M. Vondracek, P. de Barbaro, P. Melese, P. Giannetti, D. Vucinic, S. Dell'Agnello, Y. Teramoto, P. F. Derwent, J. P. Berge, Andreas Warburton, T. Chikamatsu, S. Eno, M. Atac, J. Patrick, H. Areti, D. H. Kim, J. Strait, P. Bartalini, V. Scarpine, S. Errede, A. Grewal, G. F. Sciacca, J.I. Friedman, A. Menzione, J. Lys, E. Kajfasz, H. Keutelian, R. C. Walker, Andrew Beretvas, S. Belforte, P. Yeh, M. Lindgren, D. Theriot, I. Nakano, H. Kasha, C. Couyoumtzelis, M. Franklin, A. Barbaro-Galtieri, C. H. Wang, N. Wainer, M. Mishina, M. Loreti, T. Song, K. Takikawa, T. L. Thomas, G. Pauletta, M. Miller, M. Shapiro, A. Sgolacchia, R. P. Thun, J. Steele, H. Jensen, O. Schneider, M. Dickson, H. S. Budd, T. Kaneko, E. Buckley-Geer, W. Bokhari, P. Musgrave, N. Uemura, N. Produit, L. Holloway, M. Frautschi, P. Auchincloss, W. Carithers, P. Maas, Riccardo Paoletti, G. Watts, J. P. Marriner, P. F. Shepard, S. Vejcik, A. Titov, T. J. Phillips, G. Piacentino, Sacha E Kopp, S. R. Hahn, S. Tether, J. Huth, R. Handler, L. Rosenson, W. Badgett, L. Gladney, Fumio Abe, Michele Gallinaro, J. Romano, C. Hawk, J. Kroll, L. Pondrom, E. Wicklund, L. Nodulman, M. Incagli, G. Michail, D. Bortoletto, S. R. Amendolia, L. Demortier, A. Mukherjee, T. Takahashi, James Mueller, J. Hauser, T. Mimashi, A. G. Clark, I. Yu, J. E. Elias, K. L. Byrum, T. L. Watts, A. Spies, T. A. Fuess, R. Wilkinson, P. Giromini, F. Bird, S. Behrends, Andrea Castro, S. Seidel, S. van den Brink, Yasuo Fukui, C. Haber, M. J. Shochet, C. P. Jessop, M. Turcotte, P. Hu, G. Unal, K. Hara, A. Zanetti, W. J. Robertson, F. Keyvan, T. Devlin, J. R. Dittmann, M. Mangano, J. Wang, F. Ptohos, V. Bolognesi, R. D. Kennedy, A. T. Goshaw, T. Rodrigo, J. Incandela, R. Ely, J. Cooper, M. J. Wang, Alan Sill, S. A. Hauger, T. Okusawa, J. Lu, J. Wyss, A. Caner, G. Chiarelli, R. M. Hans, J. Mansour, P. Azzi, J. Tonnison, K. Strahl, Hyun-Chul Kim, P. K. Teng, M. M. Deninno, N. M. Shaw, H. Mitsushio, F. Azfar, O. Long, W. Taylor, J. F. de Troconiz, S. Galeotti, M. W. Bailey, M. G. Albrow, A. Schindler, M. Binkley, L. E. Kirsch, L. Stanco, S. Miyashita, C. B. Luchini, G. Busetto, L. Groer, T. Boulos, P. Koehn, J. Conway, N. S. Lockyer, P. Kesten, A. Fry, C. N. Chiou, F. Bedeschi, R. C. Webb, A. Martin, K. Ragan, A. Bhatti, J. W. Chapman, A. B. Wicklund, F. Cervelli, P. Schlabach, M. Roach-Bellino, J. I. Lamoureux, L. F. Nakae, C. Wendt, Leonard Spiegel, S. Delchamps, Kiminori Kondo, P. Lukens, D. Y. Wu, A. Scribano, C. Nelson, S. Bertolucci, Daniel P Cronin-Hennessy, E. Kovacs, K. Maeshima, R. Oishi, T. M. Liss, J. Huston, M. Timko, T. Muller, P. Sinervo, E. E. Schmidt, K. Kordas, L. Pescara, Weiya Zhang, C. Boswell, Mosè Mariotti, Kevin Burkett, B. Farhat, K. E. Ohl, D. Kestenbaum, M.-T. Cheng, D. Carlsmith, G. Gagliardi, M. Yin, S. B. Kim, S. Geer, Umesh Joshi, M. Gold, R. M. Keup, B. A. Barnett, Mark Kruse, P. Limon, G. Punzi, B. L. Winer, E. Engels, D. Saltzberg, S. H. Kim, Douglas Benjamin, Paul Tipton, A. Stefanini, J. Bellinger, C. Anway-Wiese, Le Zhang, A. Yagil, K. Einsweiler, A. Byon-Wagner, G. W. Brandenburg, F. Zetti, M. Contreras, C. Blocker, G. Sullivan, T. Daniels, D. Yovanovitch, K. Sliwa, D. Crane, A. T. Laasanen, D. Glenzinski, M. Shimojima, R. Kephart, Steve Kuhlmann, D. Amidei, R. Mattingly, A. Gordon, A. Bodek, H. Wenzel, P. Sphicas, L. Ristori, Hong Sj, J. Bao, Q. Fan, J. Cammerata, A. Tollestrup, Jose M. Benlloch, L. Christofek, S. Ogawa, R. M. Harris, D. A. Kardelis, S. Miscetti, J. Skarha, Marina Cobal, C. Grosso-Pilcher, J. D. Cunningham, G. Bellettini, C. Pagliarone, J. Konigsberg, R. Hollebeek, F. D. Snider, Y. K. Kim, D. Lucchesi, J. Freeman, B. T. Huffman, A. Hölscher, K. Tollefson, S. H. Oh, M. Krasberg, G. Sganos, D. Benton, Nicola Bacchetta, S. Mikamo, J. Gonzalez, B. Harral, L. Song, X. Wu, M. D. Peters, Y. Seiya, P. McIntyre, Y. Morita, M. P. Schmidt, D. Neuberger, A. F. Garfinkel, J. Spalding, J. Antos, Konstanty Sumorok, W. C. Wester, R. B. Drucker, W. K. Sakumoto, J. P. Thomas, P. Wilson, T. Yoshida, B. Denby, N. Labanca, R. Vidal, J. Yoh, S. Segler, Q. F. Wang, D. A. Smith, I. Fiori, C. Wei, R. L. Swartz, James Proudfoot, T. Baumann, and M. Cordelli

Subjects
Physics, Particle physics, Muon, Pair production, Branching fraction, General Physics and Astronomy, Elementary particle, Leptoquark, Collider Detector at Fermilab, Particle identification, Lepton
Abstract

We present the results of a search for second generation leptoquarks ${S}_{2}$ using $19.3{\mathrm{pb}}^{\ensuremath{-}1}$ of data collected at the Collider Detector at Fermilab (CDF) in $p\overline{p}$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8$ TeV during the 1992--93 collider run. We have searched for ${S}_{2}\overline{{S}_{2}}$ pairs assuming that each leptoquark decays to a muon $+$ quark with a branching ratio $\ensuremath{\beta}$. We find two candidate events, consistent with an expected background of $1.11\ifmmode\pm\else\textpm\fi{}0.48$. We obtain upper limits on $\ensuremath{\sigma}(p\overline{p}\ensuremath{\rightarrow}{S}_{2}\overline{{S}_{2}}){\ensuremath{\beta}}^{2}$ as a function of ${M}_{{S}_{2}}$. Using a Monte Carlo prediction for ${S}_{2}\overline{{S}_{2}}$ pair production, we exclude ${M}_{{S}_{2}}l131\phantom{\rule{0ex}{0ex}}\mathrm{GeV}/{c}^{2}$ for $\ensuremath{\beta}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1$ and ${M}_{{S}_{2}}l96\phantom{\rule{0ex}{0ex}}\mathrm{GeV}/{c}^{2}$ for $\ensuremath{\beta}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.5$ at 95% C.L.

Published
1995
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46. Search for Squarks and Gluinos via Radiative Decays of Neutralinos in Proton-Antiproton Collisions at√s=1.8TeV

Author

S. Eno, A. W. Booth, J. Tonnison, S. Zucchelli, F. DeJongh, F. Rimondi, S. Ogawa, M. Timko, B. Flaugher, G. M. Grieco, W-M. Yao, K. L. Byrum, H. Keutelian, E. Meschi, Sung Keun Park, P. Giromini, J. Skarha, Steve Kuhlmann, M. Franklin, Kiminori Kondo, Y. Tsay, A. Bodek, P. Hurst, Kevin Einsweiler, J. C. Freeman, T. Baumann, M. Cordelli, G. Busetto, M. Incagli, George Redlinger, B. Farhat, Fumio Abe, R. G. Wagner, K. Takikawa, A. Roodman, A. Gauthier, James Bensinger, P. F. Derwent, D. Theriot, S. Cihangir, N. Wainer, Kazuhiko Hara, M. J. Shochet, C. Anway-Wiese, A. Zanetti, J. Wyss, D. A. Kardelis, H. H. Williams, P. Maas, S. Bertolucci, S. B. Kim, G. Sganos, J. S T Ng, Weiya Zhang, J. P. Berge, S. Segler, L. A. Markosky, L. Song, T. Fuess, Yasuo Fukui, A. Stefanini, M. Atac, C. Boswell, J. A.J. Matthews, J. C. Yun, A. Byon-Wagner, H. Iso, M. Yokoyama, R. B. Drucker, M. Krasberg, R. Grindley, J. Wolinski, T. Meyer, G. Gagliardi, G. J. Feldman, J. Tseng, B. T. Huffman, C. Pagliarone, Yongsun Kim, Nikos Giokaris, R. K. Plunkett, M. Roach, D. Quarrie, D. Lucchesi, W. Carithers, Duncan Carlsmith, Sebastian N. White, E. Kuns, N. Bacchetta, E. Pare, G. Punzi, B. L. Winer, R. Carey, G. Pauletta, M. Contreras, P. Auchincloss, R. J. Hollebeek, Giorgio Chiarelli, T. Rodrigo, Umesh Joshi, M. Lindgren, Roy F Schwitters, F. Ptohos, K. Biery, M. Ninomiya, W. J. Robertson, M. Mariotti, S. Moulding, C. B. Luchini, R. W. Kadel, J. P. Marriner, R. Cashmore, J. Konigsberg, Gordon Watts, G. Bauer, M. Frautschi, F. D. Snider, A. Etchegoyen, R. P. Johnson, Stefano Belforte, D. W. Gerdes, Chris Wendt, Y. Ye, M. Sheaff, A. Baden, L. Pondrom, E. Wicklund, J. E. Elias, Y. Cen, C. Campagnari, T. Ino, W. Chinowsky, S. Tkaczyk, R. E. Blair, R. L. Swartz, Marjorie Shapiro, M. Campbell, D. A. Smith, J. Cooper, R. M. Keup, S. H. Kim, P. Giannetti, L. Holloway, M. W. Bailey, Avraham Yagil, G. P. Yeh, A. Hölscher, R. Handler, A. Tollestrup, P. Lukens, J. Hylen, A. Para, R. C. Walker, Henrik Jeldtoft Jensen, X. Wu, M. Loreti, S. Mikamo, R. Mattingly, D. N. Brown, K. Chadwick, G. W. Foster, G. Sullivan, R. Kephart, Tony Liss, E. Buckley-Geer, Riccardo Paoletti, M. Takano, J. Patrick, S. Dell'Agnello, J. Siegrist, P. Sphicas, D. G. Underwood, T. Devlin, Hong Sj, T. Mimashi, M. Dickson, Jose M. Benlloch, S. R. Hahn, W. K. Sakumoto, S. Geer, I. Karliner, R. D. Sard, F. Tartarelli, V. Scarpine, Virgil E Barnes, K. Sliwa, M. Miller, Patrizia Azzi, E. Kearns, Paul Tipton, P. Sinervo, Nicola Turini, A. T. Laasanen, L. Ristori, J. Mueller, T. J. Phillips, A. Caner, L. F. Nakae, M. Mishina, M. Dell'Orso, Y. Morita, J. D. Lewis, Fumihiko Ukegawa, A. Spies, S. Lammel, A. Menzione, Konstanty Sumorok, E. Kovacs, Y. Seiya, C. Grosso-Pilcher, S. Miyashita, S. Behrends, A. B. Wicklund, C. Day, Kostantinos Kordas, G. F. Sciacca, D. Amidei, N. M. Shaw, Catherine Newman-Holmes, Henry J. Frisch, D. Neuberger, L. Pescara, E. H. Low, S. Miscetti, E. E. Schmidt, R. E. Hughes, D. Y. Wu, William Trischuk, H. Wenzel, W. Badgett, Aurore Savoy-Navarro, W. C. Wester, P. Bartalini, M. Mangano, J. Gonzalez, F. Bedeschi, L. Demortier, V. Bolognesi, J. Walsh, Marina Cobal, Jay Hauser, J. Yoh, J. D. Cunningham, B. Harral, G. W. Brandenburg, D. Benjamin, A. Sill, A. G. Clark, S. Errede, T. Song, G. Bellettini, R. Ely, R. Vidal, J. T. Carroll, Lawrence Nodulman, P. Limon, D. Connor, J. N. Bellinger, J. W. Chapman, T. Muller, B. A. Barnett, L. Keeble, Giorgio Apollinari, L. E. Kirsch, Teruki Kamon, I. Nakano, Craig Blocker, Kaori Maeshima, S. Zhang, A. Barbaro-Galtieri, L. Gladney, F. Cervelli, Wen Li, P. Schlabach, N. S. Lockyer, C. Nelson, S. A. Hauger, James Proudfoot, M. Spahn, P. Kesten, J. Huth, B. Denby, R. C. Webb, R. L. Wagner, Alan Garfinkel, P. McIntyre, M. H. Schub, B. Hubbard, S. Tether, G. Houk, K. Goulianos, R. Markeloff, Dario Bisello, P. de Barbaro, K. Ragan, M. Gold, Shlomit Tarem, A. Bamberger, Sally Seidel, S. Vejcik, C. P. Jessop, S. Kanda, H. Grassmann, J. Rhoades, Luca Stanco, C. Haber, S. Bhadra, A. Mukherjee, A. Dunn, A. G. Piacentino, O. Schneider, F. Zetti, C. Hawk, J. I. Lamoureux, Andrea Sansoni, S. Donati, T. L. Watts, K. Yasuoka, T. Hessing, Doyeong Kim, V. Papadimitriou, T. Rohaly, Andrew Beretvas, D. Crane, S. Leone, T. Westhusing, H. S. Budd, Andreas Warburton, Robert M Harris, Andrea Castro, P. Hu, R. St. Denis, A. Scribano, M. Binkley, and M. G. Albrow

Subjects
Physics, Quantum chromodynamics, Particle physics, Gluino, Computer Science::Information Retrieval, High Energy Physics::Phenomenology, General Physics and Astronomy, Superpartner, Supersymmetry, Particle identification, Gluon, Nuclear physics, Antiproton, High Energy Physics::Experiment, Nuclear Experiment, Energy (signal processing)
Abstract

We have sought evidence for radiative decays of neutralinos produced in proton-antiproton collisions at {radical}{ital s}=1.8TeV. Events containing two photons plus large missing transverse energy were investigated. The observed event rate and the missing transverse energy distribution of the two-photon events are consistent with QCD predictions. Inferred limits on squark and gluino masses depend on the supersymmetry model parameters. The particular choices {mu}={minus}40GeV/{ital c}{sup 2} and tan{beta}=1.5 lead to 90%-confidence-level asymptotic lower limits of 110 GeV/{ital c}{sup 2} and 140 GeV/{ital c}{sup 2} for squarks and gluinos, respectively.

Published
1995
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47. Search for Charged Bosons Heavier than theWBoson inpp¯Collisions ats=1800GeV

Author

R. L. Wagner, K. Goulianos, D. Glenzinski, Robert M Harris, P. Sphicas, F. Tartarelli, Virgil E Barnes, H. Keutelian, R. Hamilton, M. Pillai, S. Miscetti, M. Vondracek, C. Loomis, P. de Barbaro, Jay Hauser, E. Kovacs, A. Hölscher, Steve Kuhlmann, A. Caner, E. Kajfasz, J. Mansour, Andrea Castro, D. Benjamin, R. Mattingly, S. Eno, F. Cervelli, J.I. Friedman, Marina Cobal, P. Schlabach, F. DeJongh, W-M. Yao, M. Yin, E. Meschi, Sung Keun Park, S. Lammel, P. Hu, Sacha E Kopp, A. Menzione, C. Nelson, A. Bodek, J. D. Cunningham, G. Bellettini, R. Ely, D. Errede, G. Unal, F. Ptohos, M. Gold, R. D. Kennedy, J. Tonnison, W. Carithers, N. Bacchetta, W. J. Robertson, A. Gordon, T. LeCompte, D. Neuberger, R. W. Kadel, A. Scribano, C. Pagliarone, Y. Kato, James Bensinger, J. N. Bellinger, M. Franklin, P. F. Derwent, H. Grassmann, S. Galeotti, D. Lucchesi, P. Yeh, Daniel P Cronin-Hennessy, Lawrence Nodulman, Catherine Newman-Holmes, Kazuhiko Hara, J. Bao, P. Maas, M. Campbell, M. D. Peters, D. A. Smith, P. Giannetti, S. Funaki, M. Lindgren, P. Singh, D. Kestenbaum, M. Dell'Orso, Kevin Burkett, M. Mariotti, Wendy Taylor, Kevin Einsweiler, H. Areti, J. C. Freeman, V. Scarpine, Y. Ye, R. Handler, S. A. Hauger, J. A.J. Matthews, G. Gagliardi, Chris Wendt, Sally Seidel, Yasuo Fukui, M. Mishina, Allan G Clark, M. Binkley, Q. Shen, Nicola Labanca, T. Okusawa, C. Anway-Wiese, D. Saltzberg, J. F. de Troconiz, L. Holloway, M. G. Albrow, G. F. Sciacca, L. Song, C. Campagnari, S. Vejcik, K. Strahl, T. Baumann, S. Dell'Agnello, K. Biery, J. Huston, M. Cordelli, W. Badgett, G. Busetto, S. Mikamo, John Conway, M. Loreti, J. D. Lewis, A. Fry, R. G. Wagner, K. Ragan, J. Patrick, R. Kephart, Umesh Joshi, L. Rosenson, M. Miller, Patrizia Azzi, T. Daniels, G. Punzi, B. L. Winer, E. Engels, P. Melese, R. C. Webb, G. Wang, Doyeong Kim, S. Tether, A. Martin, J. Cooper, R. M. Keup, S. H. Kim, H. H. Williams, T. Takahashi, E. H. Low, James Mueller, Luca Stanco, L. E. Kirsch, A. T. Laasanen, B. Flaugher, G. M. Grieco, C. P. Jessop, S. Behrends, K. L. Byrum, W. Kowald, J. P. Marriner, J. Incandela, A. B. Wicklund, P. Giromini, R. E. Hughes, Y. Seiya, Petar Maksimovic, C. Haber, A. Byon-Wagner, H. Iso, R. J. Hollebeek, A. Stefanini, J. Tseng, H. Kasha, T. Westhusing, Jochen Jens Heinrich, T. L. Thomas, P. Bartalini, Daniela Bortoletto, D. A. Kardelis, M. Turcotte, F. Keyvan, K. Tollefson, S. Zucchelli, R. E. Blair, M. Atac, F. Rimondi, J. I. Lamoureux, X. Wu, K. Sliwa, D. Crane, P. Kesten, S. B. Kim, D. Benton, E. E. Schmidt, A. Titov, Kiminori Kondo, M. Shimojima, S. Cihangir, H. Wenzel, F. Ukegawa, N. Produit, A. Dunn, S. Delchamps, T. Boulos, T. Song, D. Y. Wu, Manfred Paulini, M. Krasberg, J. Wolinski, B. Farhat, T. Kaneko, M. T. Cheng, T. Chikamatsu, L. Pondrom, E. Wicklund, Andreas Warburton, Hong Sj, A. Grewal, S. Bertolucci, W. Bokhari, Fumio Abe, Y. Teramoto, Le Zhang, J. C. Yun, Weiya Zhang, J. P. Berge, G. W. Brandenburg, I. Yu, J. E. Elias, K. Takikawa, Michele Gallinaro, S. Moulding, N. Uemura, C. B. Luchini, J. Spalding, C. Boswell, J. Hylen, R. L. Swartz, Marjorie Shapiro, Yongsun Kim, M. J. Shochet, G. Bauer, M. Frautschi, F. D. Snider, G. Sganos, Nikos Giokaris, A. Maghakian, G. W. Foster, A. Zanetti, O. Schneider, G. Pauletta, M. Contreras, D. Amidei, R. B. Drucker, A. T. Goshaw, E. Buckley-Geer, Giorgio Chiarelli, T. Rodrigo, D. W. Gerdes, Riccardo Paoletti, M. J. Wang, R. M. Hans, P. Sinervo, H. Mitsushio, F. Azfar, Y. Cen, P. Auchincloss, Q. Fan, J. Cammerata, S. C. van den Brink, A. Spies, T. A. Fuess, Hyun-Chul Kim, A. Tollestrup, S. Miyashita, N. S. Lockyer, Gordon Watts, Henry J. Frisch, L. Demortier, V. Bolognesi, S. Errede, K. Kordas, R. Oishi, T. Devlin, Andrea Sansoni, Jose M. Benlloch, M. W. Bailey, S. Donati, S. Ogawa, Jing Wang, P. Limon, John Huth, J. Kroll, J. W. Chapman, K. Yasuoka, James Strait, M. Roach-Bellino, P. Lukens, T. Muller, W. Koska, V. Papadimitriou, M. Incagli, G. Sullivan, D. Theriot, P. Koehn, Andrew Beretvas, W. C. Wester, M. Mangano, Duncan Carlsmith, L. Pescara, J. Konigsberg, Avraham Yagil, Jun Lu, Mark Kruse, Paul Tipton, L. F. Nakae, T. L. Watts, Leonard Spiegel, Dario Bisello, A. Bhatti, F. Bird, S. Zhang, A. Barbaro-Galtieri, L. Gladney, I. Fiori, S. Leone, H. S. Budd, James Proudfoot, R. J. Miller, A. Mukherjee, R. C. Walker, S. R. Hahn, G. Piacentino, F. Zetti, C. Hawk, J. Antos, Konstanty Sumorok, J. Siegrist, M. P. Schmidt, I. Nakano, M. Timko, J. Skarha, T. Yoshida, S. Segler, B. T. Huffman, R. K. Plunkett, Stefano Belforte, Henrik Jeldtoft Jensen, Jakita O. Thomas, L. Ristori, J. Romano, J. Gonzalez, F. Bedeschi, B. Harral, N. Wainer, A. Sgolacchia, R. P. Thun, Q. F. Wang, J. Steele, S. Tkaczyk, David Stuart, G. P. Yeh, Tony Liss, T. Mimashi, M. Dickson, T. J. Phillips, Y. Morita, P. Hurst, D. D. Yovanovitch, J. Wyss, M. M. Deninno, O. Long, E. Kuns, N. M. Shaw, B. Denby, J. Yoh, A. Sill, B. A. Barnett, L. Keeble, N. Turini, Giorgio Apollinari, Teruki Kamon, P. Musgrave, Craig Blocker, Kaori Maeshima, P. Wilson, R. Vidal, P. F. Shepard, S. H. Oh, A. Schindler, G. Michail, L. Groer, Alan Garfinkel, P. McIntyre, R. Wilkinson, G. Houk, K. E. Ohl, W. K. Sakumoto, S. Geer, and C. Grosso-Pilcher

Subjects
Physics, Particle physics, Mathematics::Number Theory, Computer Science::Information Retrieval, General Physics and Astronomy, Elementary particle, Fermion, Particle identification, Massless particle, Particle decay, High Energy Physics::Experiment, Collider Detector at Fermilab, Lepton, Boson
Abstract

We have searched for new, heavy, charged bosons {ital W}{prime} through the decay {ital W}{prime}{r_arrow}{ital e}{nu} in {ital pp}{ovr bar} collisions at {radical}{ital s}=1.8 TeV. The data used in the search represent 19.7 pb{sup --1}collected by the Collider Detector at Fermilab. Limits are placed on {sigma}{ital B}({ital pp}{ovr bar}{r_arrow}{ital W}{prime}{r_arrow}{ital e}{nu}) as a function of {ital M}{sub {ital W}{prime}}. Assuming standard couplings of the {ital W}{prime} to fermions, we establish the limit {ital M}{sub {ital W}{prime}}{gt}652 GeV/{ital c}{sup 2} (95% C.L.).

Published
1995
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48. Charge Asymmetry inW-Boson Decays Produced inpp¯Collisions ats=1.8TeV

Author

T. Baumann, M. Cordelli, G. Busetto, R. G. Wagner, K. Strahl, G. Sganos, P. Hurst, J. Tonnison, M. Timko, J. Tseng, A. Byon-Wagner, H. Iso, K. L. Byrum, S. Zucchelli, R. E. Blair, P. Giromini, S. Zhang, F. Rimondi, A. Gordon, A. Barbaro-Galtieri, L. Gladney, J. Skarha, H. Kasha, James Bensinger, D. D. Yovanovitch, J. Wyss, P. F. Derwent, T. Yoshida, Kazuhiko Hara, W. Carithers, N. Bacchetta, M. M. Deninno, O. Long, I. Fiori, P. Maas, R. J. Hollebeek, F. Ptohos, James Proudfoot, H. Areti, Daniela Bortoletto, E. Kuns, S. Eno, Yasuo Fukui, Nicola Labanca, T. Okusawa, J. I. Lamoureux, J. Bao, B. Farhat, P. Melese, J. Huston, Fumio Abe, J. Siegrist, F. DeJongh, L. Ristori, W-M. Yao, M. Yin, E. Meschi, Sung Keun Park, J. Romano, J. Gonzalez, F. Bedeschi, B. Harral, M. P. Schmidt, W. J. Robertson, R. W. Kadel, K. Takikawa, M. J. Wang, I. Nakano, Andrea Sansoni, S. Donati, S. Tkaczyk, David Stuart, S. Segler, M. Franklin, R. M. Hans, B. T. Huffman, S. Miyashita, T. Rodrigo, Y. Teramoto, J. Mueller, H. Grassmann, J. D. Lewis, Michele Gallinaro, G. P. Yeh, R. J. Miller, Y. Cen, R. K. Plunkett, Tony Liss, S. C. van den Brink, T. Mimashi, M. Dickson, S. Funaki, Hyun-Chul Kim, K. Yasuoka, Kostantinos Kordas, A. Mukherjee, Gordon Watts, Kevin Einsweiler, D. Glenzinski, Q. Fan, J. Cammerata, A. Tollestrup, M. J. Shochet, W. Koska, G. Bellettini, A. Spies, T. A. Fuess, Jakita O. Thomas, H. Keutelian, N. S. Lockyer, E. H. Low, R. E. Hughes, Steve Kuhlmann, Petar Maksimovic, D. Amidei, Hong Sj, A. T. Goshaw, A. Zanetti, T. Devlin, M. Campbell, V. Papadimitriou, F. Tartarelli, T. J. Phillips, Y. Morita, N. M. Shaw, M. D. Peters, D. A. Smith, J. C. Freeman, B. Denby, P. Giannetti, Henry J. Frisch, M. Gold, H. Mitsushio, F. Azfar, S. Miscetti, S. Cihangir, Marina Cobal, Andrew Beretvas, Manfred Paulini, M. Mishina, T. Song, J. D. Cunningham, L. Demortier, V. Bolognesi, S. Errede, J. Mansour, R. Mattingly, G. Piacentino, F. Zetti, C. Hawk, A. Bodek, V. Scarpine, R. Handler, S. Dell'Agnello, S. Behrends, A. B. Wicklund, W. Bokhari, S. Belforte, J. C. Yun, J. Yoh, R. Oishi, G. Wang, T. L. Watts, C. Pagliarone, S. Galeotti, F. Bird, P. Singh, A. Dunn, D. Kestenbaum, Yongsun Kim, D. Lucchesi, M. Dell'Orso, R. C. Walker, Nikos Giokaris, A. Maghakian, Umesh Joshi, J. Cooper, R. M. Keup, S. H. Kim, P. Musgrave, E. E. Schmidt, S. Delchamps, D. Y. Wu, S. R. Hahn, A. Grewal, Le Zhang, G. W. Brandenburg, Giorgio Chiarelli, P. Limon, John Huth, F. Keyvan, K. Biery, Chris Wendt, D. Benjamin, P. Yeh, S. Bertolucci, Weiya Zhang, J. P. Berge, T. Muller, C. Boswell, Lawrence Nodulman, K. Tonnifson, S. Ogawa, M. W. Bailey, Jing Wang, J. W. Chapman, D. Benton, L. Song, J. Spalding, O. Schneider, N. Wainer, A. Sgolacchia, R. P. Thun, J. Steele, H. Jensen, J. Antos, Konstanty Sumorok, H. H. Williams, M. Incagli, G. F. Sciacca, W. Badgett, L. Rosenson, X. Wu, K. Sliwa, D. Theriot, W. Kowald, A. Stefanini, T. Kaneko, R. B. Drucker, S. Leone, D. A. Kardelis, M. Atac, P. Auchincloss, D. Crane, J.I. Friedman, T. Boulos, R. L. Swartz, Marjorie Shapiro, S. Tether, Dario Bisello, G. Punzi, H. S. Budd, L. E. Kirsch, B. L. Winer, S. B. Kim, N. Produit, Duncan Carlsmith, Jun Lu, Mark Kruse, A. Bhatti, S. Vejcik, E. Engels, R. L. Wagner, J. P. Marriner, E. Buckley-Geer, S. Moulding, N. Uemura, C. B. Luchini, Riccardo Paoletti, M. Frautschi, Paul Tipton, K. Goulianos, M. Krasberg, F. Cervelli, P. Sinervo, J. Benlloch, M. Roach-Bellino, P. Lukens, J. Bellinger, J. Wolinski, T. Chikamatsu, G. Sullivan, A. Sill, B. A. Barnett, L. Keeble, N. Turini, P. Schlabach, T. Takahashi, B. Flaugher, C. Nelson, G. M. Grieco, P. Koehn, Giorgio Apollinari, J. Incandela, Luca Stanco, D. Neuberger, G. Bauer, F. D. Snider, Teruki Kamon, R. Hamilton, Craig Blocker, C. Haber, M. Turcotte, J. Conway, L. Pescara, Kaori Maeshima, E. Kovacs, M. Pillai, P. Kesten, D. W. Gerdes, A. Titov, M. Vondracek, C. Loomis, P. Wilson, Kiminori Kondo, P. de Barbaro, S. Mikamo, E. Kajfasz, M. Miller, Patrizia Azzi, K. Ragan, Y. Ye, L. Pondrom, E. Wicklund, J. Hylen, G. W. Foster, Y. Seiya, I. Yu, J. E. Elias, Sally Seidel, A. Fry, A. Scribano, C. P. Jessop, M. Binkley, Q. Shen, M. G. Albrow, Doyeong Kim, T. Westhusing, M. Shimojima, Andreas Warburton, Robert M Harris, Andrea Castro, P. Hu, G. Unal, R. D. Kennedy, J. Konigsberg, Avraham Yagil, L. F. Nakae, Leonard Spiegel, C. Anway-Wiese, G. Pauletta, M. Contreras, Q. F. Wang, J. Kroll, James Strait, W. C. Wester, M. Mangano, D. Errede, A. Hölscher, Y. Kato, K. E. Ohl, Wendy Taylor, J. A.J. Matthews, W. K. Sakumoto, G. Gagliardi, S. Geer, Catherine Newman-Holmes, C. Grosso-Pilcher, Allan G Clark, G. Houk, D. Saltzberg, C. Campagnari, T. L. Thomas, P. Bartalini, M. Loreti, R. Vidal, P. F. Shepard, S. H. Oh, A. Schindler, R. Kephart, G. Michail, T. Daniels, L. Groer, Alan Garfinkel, P. McIntyre, R. Wilkinson, M. T. Cheng, A. T. Laasanen, Jay Hauser, Sacha E Kopp, R. Ely, S. A. Hauger, Daniel P Cronin-Hennessy, J. F. de Troconiz, Kevin Burkett, R. C. Webb, A. Martin, Jochen Jens Heinrich, H. Wenzel, F. Ukegawa, M. Lindgren, M. Mariotti, L. Holloway, J. Patrick, P. Sphicas, Virgil E Barnes, A. Caner, S. Lammel, A. Menzione, and T. LeCompte

Subjects
Quark, Nuclear physics, Physics, Particle decay, Particle physics, Tevatron, General Physics and Astronomy, Elementary particle, Charge (physics), Parton, Collider Detector at Fermilab, Boson
Abstract

Charge asymmetry has been measured using 19 039 [ital W] decays recorded by the Collider Detector at Fermilab during the 1992--93 run of the Tevatron Collider. The asymmetry is sensitive to the ratio of [ital d] and [ital u] quark distributions to [ital x][lt]0.01 at [ital Q][sup 2][approx][ital M][sup 2][sub [ital W]], where nonperturbative effects are minimal. It is found that of the two current sets of parton distributions, those of Martin, Roberts, and Stirling are favored over the sets most recently produced by the CTEQ Collaboration. The [ital W] asymmetry data provide stronger constraints on [ital d]/[ital u] ratio than the recent measurements of [ital F][sub 2][sup [mu][ital n]]/[ital F][sub 2][sup [mu][ital p]], which are limited by uncertainties originating from deuteron corrections.

Published
1995
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49. Observation of Rapidity Gaps inp¯pCollisions at 1.8 TeV

Author

R. J. Hollebeek, Y. Cen, W. Carithers, S. Zhang, T. L. Watts, A. Barbaro-Galtieri, L. Gladney, C. Anway-Wiese, A. Tollestrup, M. Binkley, M. G. Albrow, T. Rodrigo, N. Bacchetta, S. A. Hauger, T. Devlin, Jose M. Benlloch, J. A.J. Matthews, G. Gagliardi, B. Denby, Umesh Joshi, J. Siegrist, Hong Sj, P. Bartalini, R. C. Webb, M. Gold, Konstantin Goulianos, D. Amidei, A. T. Goshaw, J. Cooper, R. M. Keup, S. Tkaczyk, T. Rohaly, T. Ino, Robert M Harris, G. Pauletta, S. Bertolucci, M. Contreras, A. Hölscher, S. H. Kim, M. Takano, M. Mishina, E. Kearns, James Proudfoot, Catherine Newman-Holmes, J. Mueller, M. Incagli, Fumihiko Ukegawa, P. Lukens, D. Crane, C. Campagnari, Andrea Castro, Gordon Watts, Andrea Sansoni, Weiya Zhang, J. P. Berge, C. Boswell, F. Cervelli, Wen Li, P. Schlabach, G. P. Yeh, G. Sullivan, C. Pagliarone, M. Roach, D. Lucchesi, S. Errede, S. Behrends, A. Spies, A. B. Wicklund, P. Hu, M. Loreti, S. Donati, S. Vejcik, Shlomit Tarem, M. Yokoyama, N. M. Shaw, C. Nelson, R. B. Drucker, Stefano Belforte, Tony Liss, P. Sphicas, F. Tartarelli, V. Scarpine, Virgil E Barnes, X. Wu, K. Sliwa, A. Roodman, J. Konigsberg, W. K. Sakumoto, A. Gauthier, James Bensinger, K. Biery, J. Yoh, P. F. Derwent, R. St. Denis, R. Kephart, L. Pondrom, E. Wicklund, E. E. Schmidt, T. Hessing, S. Leone, K. Yasuoka, Chris Wendt, A. Bamberger, S. Geer, T. Mimashi, M. Dickson, P. Kesten, Kazuhiko Hara, L. Ristori, B. Farhat, J. E. Elias, Avraham Yagil, H. S. Budd, T. Muller, D. Y. Wu, Fumio Abe, Doyeong Kim, P. Maas, P. Auchincloss, C. Grosso-Pilcher, M. Franklin, K. Takikawa, R. Mattingly, D. N. Brown, V. Papadimitriou, T. J. Phillips, Y. Morita, Lawrence Nodulman, K. Chadwick, P. Limon, S. Cihangir, F. Ptohos, P. Hurst, George Redlinger, J. C. Freeman, N. Wainer, H. Jensen, R. Vidal, T. Westhusing, Nicola Turini, A. T. Laasanen, S. Miyashita, W. C. Wester, W. J. Robertson, J. Gonzalez, F. Bedeschi, B. Harral, A. Caner, Jay Hauser, Sally Seidel, M. Dell'Orso, G. W. Brandenburg, L. Pescara, L. A. Markosky, H. H. Williams, Andreas Warburton, M. Mariotti, R. W. Kadel, A. Mukherjee, Andrew Beretvas, S. Lammel, Yasuo Fukui, A. Menzione, Y. Tsay, S. Ogawa, A. Stefanini, C. Haber, D. Benjamin, R. C. Walker, J. Wyss, I. Nakano, L. F. Nakae, Henry J. Frisch, A. Etchegoyen, R. P. Johnson, C. Day, A. Sill, D. Quarrie, M. Atac, M. J. Shochet, G. F. Sciacca, S. Miscetti, S. Eno, B. A. Barnett, L. Keeble, Giorgio Apollinari, C. P. Jessop, Teruki Kamon, R. Carey, M. Campbell, D. A. Smith, W. Badgett, J. C. Yun, A. Zanetti, S. R. Hahn, S. Kanda, P. Giannetti, M. W. Bailey, H. Wenzel, A. W. Booth, Craig Blocker, Kaori Maeshima, H. Grassmann, J. Rhoades, D. Neuberger, F. Zetti, C. Hawk, J. D. Lewis, R. Handler, R. Ely, Yongsun Kim, Marina Cobal, Roy F Schwitters, I. Karliner, Nikos Giokaris, Sebastian N. White, M. Spahn, J. S T Ng, A. Dunn, J. Huth, R. L. Wagner, L. E. Kirsch, J. D. Cunningham, Alan Garfinkel, S. Dell'Agnello, S. Moulding, S. Zucchelli, G. Bellettini, D. Theriot, E. Kuns, P. McIntyre, M. H. Schub, R. D. Sard, C. B. Luchini, M. Frautschi, Paul Tipton, Giorgio Chiarelli, B. Hubbard, Kostantinos Kordas, G. Houk, H. Keutelian, F. Rimondi, Steve Kuhlmann, B. Flaugher, G. M. Grieco, Duncan Carlsmith, E. H. Low, R. E. Hughes, M. Lindgren, Konstanty Sumorok, D. Connor, J. N. Bellinger, L. Song, T. Fuess, J. P. Marriner, P. de Barbaro, L. Demortier, V. Bolognesi, R. Markeloff, F. DeJongh, A. G. Piacentino, Kiminori Kondo, K. Ragan, Dario Bisello, J. I. Lamoureux, N. S. Lockyer, L. Holloway, M. Mangano, J. Walsh, O. Schneider, J. T. Carroll, J. W. Chapman, A. Bodek, J. Patrick, T. Song, W-M. Yao, E. Pare, G. Punzi, B. L. Winer, R. L. Swartz, Marjorie Shapiro, Y. Ye, E. Meschi, Sung Keun Park, M. Timko, J. Hylen, A. Para, L. Stanco, E. Buckley-Geer, Riccardo Paoletti, A. G. Clark, K. L. Byrum, P. Sinervo, R. Cashmore, G. W. Foster, J. Skarha, T. Baumann, S. Tether, M. Cordelli, G. Busetto, R. G. Wagner, G. Sganos, S. Segler, G. J. Feldman, J. Tseng, W. Chinowsky, R. E. Blair, B. T. Huffman, D. G. Underwood, Aurore Savoy-Navarro, R. K. Plunkett, S. Bhadra, M. Ninomiya, E. Kovacs, William Trischuk, D. A. Kardelis, S. B. Kim, M. Krasberg, R. Grindley, J. Wolinski, T. Meyer, G. Bauer, F. D. Snider, D. W. Gerdes, M. Sheaff, A. Baden, S. Mikamo, M. Miller, Patrizia Azzi, Y. Seiya, J. Tonnison, Kevin Einsweiler, A. Scribano, A. Byon-Wagner, and H. Iso

Subjects
Physics, Quantum chromodynamics, Particle physics, Hadron, General Physics and Astronomy, Elementary particle, Multiplicity (mathematics), Gluon, Nuclear physics, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, Energy (signal processing), Boson
Abstract

In $p\overline{p}$ collisions at $\sqrt{s}=1.8$ TeV we find jet events with a rapidity gap topology. The number of hadrons in the rapidity interval $\ensuremath{\Delta}{\ensuremath{\eta}}_{D}$ between leading-jet cones was sampled by charged tracks with ${P}_{T}g400$ MeV/c. We find excess trackless events beyond that expected in a smooth multiplicity distribution. In a control region outside $\ensuremath{\Delta}{\ensuremath{\eta}}_{D}$ we see no excess. For $\ensuremath{\Delta}{\ensuremath{\eta}}_{D}g0.8$, the fraction of excess trackless events, consistent with estimates based on exchange of color-singlet digluons, is $R(\mathrm{gap})=\frac{{\ensuremath{\sigma}}_{\mathrm{jet}}(\mathrm{gap})}{{\ensuremath{\sigma}}_{\mathrm{jet}}}=0.0085\ifmmode\pm\else\textpm\fi{}{0.0012(\mathrm{stat})}_{\ensuremath{-}0.0012}^{+0.0024}(\mathrm{syst})$.

Published
1995
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50. Accelerated cellular senescence in solid tumor therapy

Author

P C, Wu, Q, Wang, L, Grobman, E, Chu, and D Y, Wu

Subjects
Cell Transformation, Neoplastic, Neoplasms, Humans, Apoptosis, Cell Cycle Checkpoints, Telomere, Cellular Senescence, Cell Proliferation, Signal Transduction
Abstract

Accelerated cellular senescence (ACS) is an emerging concept that implicates sustained, telomere-independent cell cycle arrest of neoplastic cells in response to chemotherapeutic agents, ionizing radiation, oxidative stress, or the presence of selective oncogenic stimuli. Recent evidence suggests that a subset of tumor cells induced in a state of reversible ACS can escape cell cycle arrest and resume proliferation accounting for cancer progression. The purpose of this review is to describe our current understanding of ACS including signaling pathways of senescence escape, role of senescence biomarkers, and rationale for senescence-based therapy. This article is part of a Special Issue entitled "Apoptosis: Four Decades Later".

Published
2012

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