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5. A Local Controller for Discrete-Time Large-Scale System by Using Integral Variable Structure Control

Author

C. H. Chai and Johari H. S. Osman

Subjects
Engineering (General). Civil engineering (General), TA1-2040, Electronic computers. Computer science, QA75.5-76.95
Abstract

A new local controller for discrete-time integral variable structure control of a large-scale system with matched and unmatched uncertainty is presented. The local controller is able to bring the large-scale system into stability by using only the states feedback from individual subsystem itself. A new theorem is established and proved that the controller is able to handle the effect of interconnection for the large-scale system with matched and unmatched uncertainty, and the system stability is ensured. The controller is able to control the system to achieve the quasi-sliding surface and remains on it. The results showed a fast convergence to the desired value and the attenuation of disturbance is achieved.

Published
2015
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8. Effects of leading-edge protuberances on airfoil performance

Author

Johari, H., Henoch, C., Custodio, D., and Levshin, A.

Subjects
Aerofoils -- Properties, Flow visualization -- Methods, Aerospace and defense industries, Business
Abstract

Lift, drag, and pitching moments of airfoils with leading-edge sinusoidal protuberances were measured in a water tunnel and compared with those of a baseline [63.sub.4]-021 airfoil. The amplitude of the leading-edge protuberances ranged from 2.5 to 12% of the mean chord length; the spanwise wavelengths were 25 and 50% of the mean chord length. These ranges correspond to the morphology found on the leading edge of humpback whales' flippers. Flow visualization using tufts was also performed to examine the separation characteristics of the airfoils. For angles of attack less than the baseline stall angle, lift reduction and drag increase were observed for the modified foils. Above this angle, lift of the modified foils was up to 50% greater than the baseline foil with little or no drag penalty. The amplitude of the protuberances had a distinct effect on the performance of the airfoils, whereas the wavelength had little. Flow visualization indicated separated flow originating primarily from the troughs and attached flow on the peaks of the protuberances at angles beyond the stall angle of the baseline foil.

Published
2007

9. Concentration field measurements within isolated turbulent puffs

Author

Ghaem-Maghami, E. and Johari, H.

Subjects
Turbulence -- Measurement, Jets -- Research, Reynolds number -- Analysis, Engineering and manufacturing industries, Science and technology
Abstract

The structure of passive scalar concentration field within isolated turbulent puffs was measured using the planar laser Mie scattering technique. Puffs were generated by injecting seeded air through a 5-mm-diameter nozzle into a chamber with a weak air co-flow. The injection time and volume was varied by the use of a fast-response solenoid valve. Puffs were examined in the range of 25-55 diameters downstream of the nozzle. The Reynolds number based on the average velocity and nozzle diameter was 5000. The results indicate that as the injection volume increases, puffs evolve from a spherical geometry to that with a tail The half-width of radial concentration profiles through the puff center decrease as the injection volume increases. On the other hand, the puff length in the axial direction increases with the injection volume. The volume of ambient fluid entrained by the puff, and normalized by the injected volume, decreases with increasing injection volume. [DOI: 10.1115/1.2409348]

Published
2007

11. Effects of pulsing on a vortex generator jet

Author

Johari, H. and Rixon, G.S.

Subjects
Aerospace engineering -- Research, Aerospace and defense industries, Business
Abstract

The evolution of a pulsed vortex generator jet embedded in a turbulent boundary layer was examined experimentally. The jet, which was pitched 45 deg and skewed 90 deg, had a velocity three times greater than the freestream. The velocity field in planes normal to the freestream was measured by the particle-image-velocimetry method at four stations downstream of the jet exit. The pulsed jet created a starting vortex ring followed by a pair of counter-rotating streamwise vortices, one of them being markedly stronger. Phase-averaged data indicate that the maximum circulation and peak vorticity of the stronger vortex are approximately 30% greater than the average values for a steady jet with the same velocity. However, circulation averaged over the entire pulse was less than that for a steady jet at the same location. The core of the primary streamwise vortex penetrates approximately 50% farther into the boundary layer than a steady jet with the same velocity. The larger penetration takes place during the initial portion of the pulse and is caused by the jet starting vortex ring.

Published
2003

12. Stiffness scaling for solid-cloth parachutes

Author

Johari, H. and Desabrais, K.J.

Subjects
Wind tunnel models -- Analysis, Air-supported structures -- Evaluation, Parachutes -- Research, Aerospace and defense industries, Business, Science and technology
Abstract

The parameters affecting the inflation of solid-cloth, flat circular parachute canopies were investigated. A primary dimensionless parameter in addition to mass ratio, Froude number, and permeability is a stiffness index. Comparison of sub- and full-scale C9 parachutes, along with small-scale wind- and water-tunnel models has revealed that a relative stiffness index is able to correlate the filling and opening times of various sized canopies. The filling and opening times can be expressed as the relative stiffness index raised to power -0.064, with a proportionality factor of 1.3 for the filling time. The proportionality factor that correlates opening times is 0.86 for mass ratios in the range of 0.1-0.2, and it approaches 1.3 as mass ratio becomes very large. The index has utility in correlating peak forces as well.

Published
2003

13. Effects of coflow on turbulent flame puffs

Author

Hermanson, J.C., Sangras, R., Usowicz, J.E., and Johari, H.

Subjects
Jets -- Fluid dynamics, Turbulence -- Analysis, Flame -- Analysis, Aerospace and defense industries, Business
Abstract

Pulsed, turbulent jet diffusion flames in an air coflow of variable strength were examined experimentally. In all cases, the flames were fully modulated, that is, the fuel flow was completely shut off between pulses. Isolated puffs of unheated ethylene fuel were injected using a 2-mm-diam-nozzle into a combustor with an air coflow at 1-atm pressure. For short injection times ([tau]< 50 ms), compact, pufflike structures were generated. The mean flame length of these puffs was at least 51% less than that of a steady-state, that is, nonpulsed, flame for the same injection Reynolds number. More elongated flame structures, with a flame length closer to that of steady-state flames, occurred for longer injection times of up to 300 ms. The addition of coflow generally causes an increase in the mean flame length. For short injection times ([tau]< 50 ms), this resulted in an increase in flame length of up to 27% for a coflow strength of [U.sub.cof]/[U.sub.jet] = 0.02. The fractional increase in the flame length due to coflow of pulsed flames with longer injection times, as well as steady flames, was significantly less. The mean flame length for the flame with the coflow duct generally exceeded that of the corresponding free flame, even for the case of zero coflow. The amount of coflow required to achieve a given increase in mean flame length is quantitatively consistent with a scaling argument developed as part of this investigation.

Published
2002

14. Impulsively started flow about a rigid parachute canopy

Author

Johari, H., Stein, K., and Tezduyar, T.

Subjects
Aerodynamics -- Research, Air flow -- Research, Parachutes -- Research, Aerospace and defense industries, Business, Science and technology
Abstract

The computation of the impulsively started flow around a rigid parachute canopy is described.

Published
2001

16. Penetration and mixing of fully modulated turbulent jets in crossflow

Author

Johari, H., Pacheco-Tougas, M., and Hermanson, J.C.

Subjects
Atmospheric turbulence -- Research, Jets -- Fluid dynamics, Mixing -- Research, Aerospace and defense industries, Business
Abstract

The role of duty cycle and injection time on the penetration and mixing of fully-modulated, incompressible and turbulent transverse jets have been studied in a water tunnel. The jet flow was modulated by operating an in-line solenoid valve which cuts off jet supply during a portion of the cycle. Results indicate that complete modulation resulted in a modification of the jet flow as well as its penetration depth, dilution and mixing to various degrees. Long injection times led to the formation of axially elongated turbulent puffs that resembled a segment of the steady jet.

Published
1999

19. Direct measurement of delta-wing vortex circulation

Author

Johari, H. and Moreira, J.

Subjects
Supersonic planes -- Wings, Vortex-motion -- Measurement, Aerodynamics -- Research, Aerospace and defense industries, Business
Abstract

A new ultrasound method has been formulated for measuring the circulation of delta-wing primary vortices. It is also used in investigating the variation of circulation with angle of attack and chordwise location for wing sweep angles of 60 and 70 degrees. These angles have been selected because they represent the behavior of high- and low-sweep-angle delta wings. The strength of the vortex can be determined by measuring the circulation around a closed path which contains the vortex. Hot-wire or laser Doppler anemometry can be utilized for quantifying velocity vectors in a flowfield.

Published
1998

20. Experiments on impulsively started jet diffusion flames

Author

Johari, H., Desabrais, K.J., and Hermanson, J.C.

Subjects
Jet planes -- Fuel and fuel systems, Aircraft gas-turbines -- Combustion chambers, Combustion -- Analysis, Aerospace and defense industries, Business
Abstract

A study was conducted on the starting vortex of impulsively started jet diffusion flames using a special device to measure the volumetric flow under steady conditions. The device consists of a contoured nozzle, a solenoid valve and a sharp-edged orifice plate section. Results show that the height at which the starting vortex totally burned off was almost equal to the mean flame length of the stationary flow. Moreover, the timescale for complete burnoff of the starting vortex at its mean flame height seems to be about half of the vortex rotation time at the same location.

Published
1997

21. Impulsively started turbulent jets

Author

Johari, H., Zhang, Q., Rose, M.J., and Bourque, S.M.

Subjects
Wind shear -- Analysis, Jets -- Fluid dynamics, Shear (Mechanics) -- Analysis, Air flow -- Analysis, Aerodynamics -- Research, Aerospace and defense industries, Business
Abstract

The starting vortex motion and jet penetration of round, incompressible and impulsively turbulent jets were analyzed based on a series of experiments in a water tank utilizing inert and chemically reactive markers. The starting vortex of the impulsively started turbulent jet separated from the rest in the near field after a brief period. Furthermore, the series of chemically reactive experiments indicated faster mixing of the jet tip with the ambient compared to the rest of the jet.

Published
1997

22. Delta wing vortex manipulation using pulsed and steady blowing during ramp-pitching

Author

Johari, H. and Moreira, J.

Subjects
Vortex-motion -- Analysis, Hysteresis -- Observations, Stability of airplanes -- Research, Aerospace and defense industries, Business, Science and technology
Abstract

Pulsed blowing is a more efficient method for delaying vortex breakdown during ramp-pitching than steady blowing. Pulsing increases the vertical flow over the delta wing and delays breakdown. A hysteresis effect occurs during ramp-pitching, which is proportional to pitching rates. However, at higher pitching rates, the burst location is more substantially influenced by pitching parameters than blowing. The vortex manipulation is achieved using a recessed angle spanwise blowing technique.

Published
1996

23. Community heritage discourse (CHD) : A multidisciplinary perspective in understanding built heritage conservation

Author

Amar, Johari H. N., Armitage, Lynne, Amar, Johari H. N., and Armitage, Lynne

Abstract

Despite increasing efforts to protect cultural built heritage, destruction continues and impediments to effective heritage management remain. One solution calls for drawing on a broader stakeholder base to minimise barriers to better built heritage conservation. Whilst much remains to be done, there is evidence of enhanced stakeholder co-operation for reforms that could bring broader insights to this discourse. The objective of this paper is to qualify a new analytical concept entitled community heritage discourse (CHD). Reflecting on the structures, meanings and processes for consensus, expectations andcollective action, the paper addresses theoretical and empirical questions of what is built heritage, which values are significant, who is a stakeholder and their interrelationship with the conservation process. Employing an empirical approach including a literature review, focus groups and interviews from Australia and Tanzania, this study reveals that built heritage conservation exhibits a complementary dependence on changing landscape and collective memory plus individual attitudes and value systems. This understanding offers a more inclusive framework for the strategic development of heritage conservation plans across various jurisdictions thus generating a new approach to understanding the complex relationship between built heritage and stakeholder perceptions in heritage conservation.

Published
2019

24. Performance of a large scale scintillating fiber tracker using VLPC readout

Author

Adams, D., Adams, M., Baumbaugh, B., Bertram, I., Bross, A., Casey, D., Chang, S., Chung, M., Cooper, C., Cretsinger, C., Demina, R., Fanourakis, G., Ferbel, T., Grunendahl, S., Hinson, J., Howell, B., Johari, H., Kang, J.S., Kim, C.L., Kim, S.K., Koltick, D., Lobkowicz, R., Margulies, S., Moromisato, J., Narain, M., Park, C.H., Park, Y.M., Reucroft, S., Ruchti, R., Solomon, J., VonGoeler, E., Warchol, J., Wayne, M., Won, E., and Yu, Y.S.

Subjects
United States. Fermi National Accelerator Laboratory -- Equipment and supplies, Nuclear track detectors -- Evaluation, Business, Electronics, Electronics and electrical industries
Abstract

A large scale scintillating fiber tracker using visible light photon counter (VLPC) readout was built as a prototype for the upgraded D0 central tracker. This prototype has been under test at Fermilab for six months using cosmic rays. A description of the components of the tracker including the photodetector, fibers, lightguides, ribbons, and DAQ is given. Preliminary results on detected photon yield, position resolution, efficiency and VLPC performance are presented.

Published
1995

25. Delta wing vortex control via recessed angled spanwise blowing

Author

Johari, H., Olinger, D.J., and Fitzpatrick, K.C.

Subjects
Vortex-motion -- Observations, Aerodynamics -- Research, Wings (Animal) -- Research, Aerospace and defense industries, Business, Science and technology
Abstract

Recessed angled spanwise blowing, a newly developed technique, is used for vortex control of beveled 60 deg delta wing in a water tunnel. A 22 deg attack angle and blowing coefficient of 0.05 causes maximum improvement in vortex breakdown location of 15% chord. Vortex breakdown slows down when blowing is done from a port downstream of natural burst location. Vortex breakdown occurs at blowing port for blowing upstream of natural burst.

Published
1995

26. Buoyancy Effects in Strongly-Pulsed, Turbulent Diffusion Flames

Author

Hermanson, J. C, Johari, H, Ghaem-Maghami, E, Stocker, D. P, and Hegde, U. G

Subjects
Spacecraft Propulsion And Power
Abstract

The objective of this experiment is to better understand the combustion behavior of pulsed, turbulent diffusion flames by conducting experiments in microgravity. The fuel jet is fully-modulated (i.e., completely shut off between pulses) by an externally controlled valve system leading to enhanced fuel/air mixing compared to acoustically excited or partially-modulated jets. Experiments are conducted both in laboratories at UW and WPI and in the GRC 2.2s Drop Tower. A single fuel nozzle with diameter d = 2 mm is centered in a combustor 20 20 cm in cross section and 67 cm in height. The gaseous fuel flow (ethylene or a 50/50 ethylene/nitrogen mixture by volume) is fully-modulated by a fast-response solenoid valve with injection times from tau = 4 to tau = 300 ms. The nominal Reynolds number based on the fuel velocity during injection, U(sub jet), is 5,000. A slow oxidizer co-flow properly ventilates the flame and an electrically heated wire loop serves as a continuous ignition source. Diagnostic techniques include video imaging, fine-wire thermocouples and thermopile radiometers, and gas sampling and standard emissions instruments (the last in the laboratory only).

Published
2004

27. Buoyancy Effects in Fully-Modulated, Turbulent Diffusion Flames

Author

Hermanson, J. C, Johari, H, Ghaem-Maghami, E, Stocker, D. P, Hegde, U. G, and Page, K. L

Subjects
Fluid Mechanics And Thermodynamics
Abstract

Pulsed combustion appears to have the potential to provide for rapid fuel/air mixing, compact and economical combustors, and reduced exhaust emissions. The objective of this experiment (PuFF, for Pulsed-Fully Flames) is to increase the fundamental understanding of the fuel/air mixing and combustion behavior of pulsed, turbulent diffusion flames by conducting experiments in microgravity. In this research the fuel jet is fully-modulated (i.e., completely shut off between pulses) by an externally controlled valve system. This gives rise to drastic modification of the combustion and flow characteristics of flames, leading to enhanced fuel/air mixing compared to acoustically excited or partially-modulated jets. Normal-gravity experiments suggest that the fully-modulated technique also has the potential for producing turbulent jet flames significantly more compact than steady flames with no increase in exhaust emissions. The technique also simplifies the combustion process by avoiding the acoustic forcing generally present in pulsed combustors. Fundamental issues addressed in this experiment include the impact of buoyancy on the structure and flame length, temperatures, radiation, and emissions of fully-modulated flames.

Published
2003

28. Thermal Characteristics and Structure of Fully-Modulated, Turbulent Diffusion Flames in Microgravity

Author

Hermanson, J. C, Johari, H, Stocker, D. P, and Hegde, U. G

Subjects
Fluid Mechanics And Thermodynamics
Abstract

Turbulent jet diffusion flames are studied in microgravity and normal gravity under fully-modulated conditions for a range of injection times and a 50% duty cycle. Diluted ethylene was injected through a 2-mm nozzle at a Reynolds number of 5,000 into an open duct, with a slow oxidizer co-flow. Microgravity tests are conducted in NASA's 2.2 Second Drop Tower. Flames with short injection times and high duty cycle exhibit a marked increase in the ensemble-averaged flame length due to the removal of buoyancy. The cycle-averaged centerline temperature profile reveals higher temperatures in the microgravity flames, especially at the flame tip where the difference is about 200 K. In addition, the cycle-averaged measurements of flame radiation were about 30% to 60% greater in microgravity than in normal gravity.

Published
2003

29. The Mediating Effect of Organizational Citizenship Behaviour on the Relationship between Perceived Organizational Support and Turnover Intention: A Proposed Framework

Author

Oussama Saoula and Johari, H.

Subjects
lcsh:Management. Industrial management, lcsh:HD28-70, turnover intention, organizational citizenship behavior, lcsh:Business, lcsh:HF5001-6182, social exchange theory, Perceived Organizational Support,Organizational Citizenship Behavior,Turnover Intention,Social Exchange Theory, perceived organizational support
Abstract

Employees’ turnover is an international phenomenon that is deliberated as tough challenge to the companies, as it is tiring and costly. Thus there is obligation for conducting more researches in order to support the academicians, practitioners, decision makers with better understanding of this dilemma and clarify more on the factors affecting these phenomena in deferent settings and contexts of research, particularly in the non-western perspectives such as Malaysia who is facing a big challenge toward the employees’ turnover in many sectors. Therefore, the purpose of this paper is determine the relationship between perceived organizational support, organizational citizenship behavior (benefiting the individual OCB-I, and benefiting the organization OCB-O) and turnover intention. Due to that, this study proposed framework to study the effect of perceived organizational support on turnover intention through the mediation role of organizational citizenship behavior (OCB-I, OCB-O). In addition, the direct effect between the variables has been discussed. . Hence this paper is expected to fill the research gap and contribute to the body of knowledge in this area of research.

Published
2016

31. An Investigation of Fully Modulated, Turbulent Diffusion Flames in Reduced Gravity

Author

Hermanson, J. C, Johari, H, Usowicz, J. E, Sangras, R, Stocker, D. P, Hegde, U. G, Nagashima, T, and Obata, S

Subjects
Inorganic, Organic And Physical Chemistry
Abstract

Pulsed combustion appears to have the potential to provide for rapid fuel/air mixing, compact and economical combustors, and reduced exhaust emissions. The objective of this Flight-Definition experiment (PuFF, for Pulsed-Fully Flames) is to increase the fundamental understanding of the fuel/air mixing and combustion behavior of pulsed, turbulent diffusion flames by conducting experiments in microgravity. In this research the fuel jet is fully modulated (i.e., completely shut off between pulses) by an externally controlled valve system. This gives rise to drastic modification of the combustion and flow characteristics of flames, leading to enhanced fuel/air mixing mechanisms not operative for the case of acoustically excited or partially-modulated jets. The fully-modulated injection approach also simplifies the combustion process by avoiding the acoustic forcing generally present in pulsed combustors. Relatively little is known about the behavior of turbulent flames in reduced-gravity conditions, even in the absence of pulsing. Fundamental issues addressed in this experiment include the impact of buoyancy on the fuel/air mixing and combustion characteristics of fully-modulated flames. It is also important for the planned space experiments to establish the effects of confinement and oxidizer co-flow on these flames.

Published
2001

32. An Experiment Investigation of Fully-Modulated, Turbulent Diffusion Flames in Reduced Gravity

Author

Hermanson, J. C, Johari, H, Usowicz, J. E, Stocker, D. P, Nagashima, T, and Obata, S

Subjects
Materials Processing
Abstract

Pulsed combustion appears to have the potential to provide for rapid fuel/air mixing, compact and economical combustors, and reduced exhaust emissions. The ultimate objective of this program is to increase the fundamental understanding of the fuel/air mixing and combustion behavior of pulsed, turbulent diffusion flames by conducting experiments in microgravity. In this research the fuel jet is fully-modulated (i.e., completely shut off between pulses) by an externally controlled valve system. This can give rise to drastic modification of the combustion and flow characteristics of flames, leading to enhanced fuel/air mixing mechanisms not operative for the case of acoustically excited or partially-modulated jets. In addition, the fully-modulated injection approach avoids the strong acoustic forcing present in pulsed combustion devices, significantly simplifying the mixing and combustion processes. Relatively little is known of the behavior of turbulent flames in reduced-gravity conditions, even in the absence of pulsing. The goal of this Flight-Definition experiment (PUFF, for PUlsed-Fully Flames) is to establish the behavior of fully-modulated, turbulent diffusion flames under microgravity conditions. Fundamental issues to be addressed in this experiment include the mechanisms responsible for the flame length decrease for fully-modulated, turbulent diffusion flames compared with steady flames, the impact of buoyancy on the mixing and combustion characteristics of these flames, and the characteristics of turbulent flame puffs under fully momentum-dominated conditions.

Published
1999

33. Delta wing vortex manipulation using pulsed and steady blowing during ramp pitching

Author

Moreira, J and Johari, H

Subjects
Aerodynamics
Abstract

The effectiveness of steady and pulsed blowing as a method of controlling delta wing vortices during ramp pitching has been investigated in flow visualization experiments conducted in a water tunnel. The recessed angled spanwise blowing technique was utilized for vortex manipulation. This technique was implemented on a beveled 60 delta wing using a pair of blowing ports located beneath the vortex core at 40% chord. The flow was injected primarily in the spanwise direction but was also composed of a component normal to the wing surface. The location of vortex burst was measured as a function of blowing intensity and pulsing frequency under static conditions, and the optimum blowing case was applied at three different wing pitching rates. Experimental results have shown that, when the burst location is upstream of the blowing port, pulsed blowing delays vortex breakdown in static and dynamic cases. Dynamic tests verified the existence of a hysteresis effect and demonstrated the improvements offered by pulsed blowing over both steady blowing and no-blowing scenarios. The application of blowing, at the optimum pulsing frequency, made the vortex breakdown location comparable in static and ramp pitch-up conditions.

Published
1995

34. Duty-cycle effects on penetration of fully modulated, turbulent jets in crossflow

Author

Hermanson, J.C., Wahba, J.C., and Johari, H.

Subjects
Jets -- Fluid dynamics, Turbulence -- Analysis, Aerospace and defense industries, Business
Abstract

A research was conducted to analyze the impact of fully modulated pulsing on the penetration, entrainment and mixing features of transverse jets in a crossflow. The study focuses on the distinct effects of the pulsing parameters, particularly the jet-on fraction for each cycle. To identify jet penetration for the various values of injection time and duty cycle, pulsed, nonreacting transverse jets were utilized. The results are discussed.

Published
1998

35. Australian cultural built heritage : stakeholders' perceived conservation barriers and motivations

Author

Amar, Johari H. N., Armitage, Lynne, O'Hare, Daniel, Amar, Johari H. N., Armitage, Lynne, and O'Hare, Daniel

Abstract

Stakeholders are recognised as drivers of effective conservation of cultural built heritage. Yet, as stakeholders have eclectic views in terms of their interest in, knowledge of and perceptions about the management of historic fabric, their practices are often diverse. The objective of this paper is to gain an understanding of the stakeholders' views drawn from relevant professional field on the issues that act as barriers to conservation and identify the factors that motivate built heritage management in Australia. Using a qualitative research design, two focus groups were conducted in Queensland and New South Wales with purposely selected key informants (N=14) working in the Australian heritage sector. The study presents stakeholders' interest in managing built heritage and the perceptions concerning the application of conservation policy and practices in the Australian built heritage sector, as influenced by the interdisciplinary backgrounds of participants. The paper contributes to an in-depth understanding of the conservation barriers and motivators and their implications for policy and practices in the management of Australian built heritage. The study is based on the perceptions of key informants with diverse interests and knowledge about the conservation of cultural built heritage; this makes the research analysis and implications inclusive and influential from both theoretical and practical points of view.

Published
2017

36. Spreading rate of an unsteady turbulent jet

Author

Medina, R., Johari, H., and Kouros, H.

Subjects
Flow visualization -- Methods, Jets -- Fluid dynamics, Aerospace and defense industries, Business
Abstract

A study of the spreading rate and the penetration length of a nonharmonic unsteady jet of considerable duration, when compared to the pulsed jets, reveals that the visible spreading rate of an unsteady jet is less than half of the steady jet value. This is shown by flow-visualization experiments conducted on a simple apparatus. During the run, there is almost no change in the spreading rate, though there is a significant variation in the velocity. The unsteady effects on entertainment and mixing can be understood better as a result of these findings.

Published
1993

37. Blood Flow Parameters of the Central Retinal and Internal Carotid Arteries in Asymmetric Diabetic Retinopathy

Author

Mehdizadeh, M., Mehrzad Lotfi, Ghoddusi-Johari, H., Ghassemifar, V., and Afarid, M.

Subjects
Internal Carotid Artery, Diabetic Retinopathy, genetic structures, lcsh:Ophthalmology, lcsh:RE1-994, Central Retinal Artery, Original Article, sense organs, Color Doppler Imaging, eye diseases
Abstract

Purpose: To investigate the correlation between diabetic retinopathy severity and blood flow parameters in the central retinal artery (CRA) and internal carotid artery (ICA). Methods: This comparative study included 40 eyes of 20 patients with asymmetric diabetic retinopathy. Twelve subjects had asymmetric diabetic macular edema while eight patients had proliferative diabetic retinopathy (PDR) in one eye and non-proliferative diabetic retinopathy (NPDR) in the fellow eye. Bilateral color Doppler imaging (CDI) of the CRA and ICA was performed to determine resistance index (RI) and peak systolic velocity (PSV). RI and PSV values were compared between eyes with higher grades of macular edema (> 2 grades of difference with the fellow eye) and fellow eyes with less severe macular edema, as well as between eyes with PDR and fellow eyes with NPDR. Results: Mean RI of the CRA in eyes with higher grades of macular edema was 0.78±0.11 as compared to 0.69±0.08 in fellow eyes with less severe macular edema (P=0.012), while PSV of the CRA was 58.83±18.93 cm/s in eyes with higher grades of macular edema versus 59.75±11.83 cm/s in fellow eyes with less severe macular edema (P=1.00). Mean PSV of the ICA was 55±23.94 cm/s in eyes with PDR and 69.25±34.30 cm/s in eyes with NPDR (P=0.008) while mean RI of the ICA was 0.81±0.13 in eyes with PDR and 0.76±0.12 in eyes with NPDR (P=1.00). Conclusion: Evaluation of RI in the CRA and PSV in the ICA by CDI in diabetic patients may identify eyes at risk of more severe macular edema and PDR.

Published
2012

42. Limits on WW gamma and WWZ couplings from W boson pair production

Author

Abbott, B, Abolins, M, Acharya, BS, Adam, I, Adams, DL, Adams, M, Ahn, S, Aihara, H, Alves, GA, Amos, N, Anderson, EW, Astur, R, Baarmand, MM, Babukhadia, L, Baden, A, Balamurali, V, Balderston, J, Baldin, B, Banerjee, S, Bantly, J, Barberis, E, Bartlett, JF, Belyaev, A, Beri, SB, Bertram, I, Bezzubov, VA, Bhat, PC, Bhatnagar, V, Bhattacharjee, M, Biswas, N, Blazey, G, Blessing, S, Bloom, P, Boehnlein, A, Bojko, NI, Borcherding, F, Boswell, C, Brandt, A, Brock, R, Bross, A, Buchholz, D, Burtovoi, VS, Butler, JM, Carvalho, W, Casey, D, Casilum, Z, Castilla-Valdez, H, Chakraborty, D, Chang, SM, Chekulaev, SV, Chen, LP, Chen, W, Choi, S, Chopra, S, Choudhary, BC, Christenson, JH, Chung, M, Claes, D, Clark, AR, Cobau, WG, Cochran, J, Coney, L, Cooper, WE, Cretsinger, C, Cullen-Vidal, D, Cummings, MAC, Cutts, D, Dahl, OI, Davis, K, De, K, Del Signore, K, Demarteau, M, Denisov, D, Denisov, SP, Diehl, HT, Diesburg, M, Di Loreto, G, Draper, P, Ducros, Y, Dudko, LV, Dugad, SR, Edmunds, D, Ellison, J, Elvira, VD, Engelmann, R, Eno, S, Eppley, G, Ermolov, P, Eroshin, OV, Evdokimov, VN, Fahland, T, Fatyga, MK, Feher, S, Fein, D, Ferbel, T, Finocchiaro, G, Fisk, HE, Fisyak, Y, Flattum, E, Forden, GE, Fortner, M, Frame, KC, Fuess, S, Gallas, E, Galyaev, AN, Gartung, P, Gavrilov, V, Geld, TL, Genik, RJ, Genser, K, Gerber, CE, Gershtein, Y, Gibbard, B, Glenn, S, Gobbi, B, Goldschmidt, A, Gomez, B, Gomez, G, Goncharov, PI, Solis, JLG, Gordon, H, Goss, LT, Gounder, K, Goussiou, A, Graf, N, Grannis, PD, Green, DR, Greenlee, H, Grinstein, S, Grudberg, P, Grunendahl, S, Guglielmo, G, Guida, JA, Guida, JM, Gupta, A, Gurzhiev, SN, Gutierrez, G, Gutierrez, P, Hadley, NJ, Haggerty, H, Hagopian, S, Hagopian, V, Hahn, KS, Hall, RE, Hanlet, P, Hansen, S, Hauptman, JM, Hedin, D, Heinson, AP, Heintz, U, Hernandez-Montoya, R, Heuring, T, Hirosky, R, Hobbs, JD, Hoeneisen, B, Hoftun, JS, Hsieh, F, Hu, T, Huehn, T, Ito, AS, James, E, Jaques, J, Jerger, SA, Jesik, R, Jiang, JZY, Joffe-Minor, T, Johari, H, Johns, K, Johnson, M, Jonckheere, A, Jones, M, Jostlein, H, Jun, SY, Jung, CK, Kahn, S, Kalbfleisch, G, Kang, JS, Karmanov, D, Karmgard, D, Kehoe, R, Kelly, ML, Kim, CL, Kim, SK, Klima, B, Klopfenstein, C, Kohli, JM, Koltick, D, Kostritskiy, AV, Kotcher, J, Kotwal, AV, Kourlas, J, Kozelov, AV, Kozlovsky, EA, Krane, J, Krishnaswamy, MR, Krzywdzinski, S, Kuleshov, S, Kunori, S, Landry, F, Landsberg, G, Lauer, B, Leflat, A, Li, H, Li, J, Li-Demarteau, QZ, Lima, JGR, Lincoln, D, Linn, SL, Linnemann, J, Lipton, R, Liu, YC, Lobkowicz, F, Loken, SC, Lokos, S, Lueking, L, Lyon, AL, Maciel, AKA, Madaras, RJ, Madden, R, Magana-Mendoza, L, Manankov, V, Mani, S, Mao, HS, Markeloff, R, Marshall, T, Martin, MI, Mauritz, KM, May, B, Mayorov, AA, McCarthy, R, McDonald, J, McKibben, T, McKinley, J, McMahon, T, Melanson, HL, Merkin, M, Merritt, KW, Miettinen, H, Mincer, A, Mishra, CS, Mokhov, N, Monda, NK, Montgomery, HE, Mooney, P, da Motta, H, Murphy, C, Nang, F, Narain, M, Narasimham, VS, Narayanan, A, Neal, HA, Negret, JP, Nemethy, P, Norman, D, Oesch, L, Oguri, V, Oliveira, E, Oltman, E, Oshima, N, Owen, D, Padley, P, Para, A, Park, YM, Partridge, R, Parua, N, Paterno, M, Pawlik, B, Perkins, J, Peters, M, Piegaia, R, Piekarz, H, Pischalnikov, Y, Pope, BG, Prosper, HB, Protopopescu, S, Qian, J, Quintas, PZ, Raja, R, Rajagopalan, S, Ramirez, O, Rasmussen, L, Reucroft, S, Rijssenbeek, M, Rockwell, T, Roco, M, Rubinov, P, Ruchti, R, Rutherfoord, J, Sanchez-Hernandez, A, Santoro, A, Sawyer, L, Schamberger, RD, Schellman, H, Sculli, J, Shabalina, E, Shaffer, C, Shankar, HC, Shivpuri, RK, Shupe, M, Singh, H, Singh, JB, Sirotenko, V, Smart, W, Smith, E, Smith, RP, Snihur, R, Snow, GR, Snow, J, Snyder, S, Solomon, J, Sosebee, M, Sotnikova, N, Souza, M, Spadafora, AL, Steinbruck, G, Stephens, RW, Stevenson, ML, Stewart, D, Stichelbaut, F, Stoker, D, Stolin, V, Stoyanova, DA, Strauss, M, Streets, K, Strovink, M, Sznajder, A, Tamburello, P, Tarazi, J, Tartaglia, M, Thomas, TLT, Thompson, J, Trippe, TG, Tuts, PM, Varelas, N, Varnes, EW, Vititoe, D, Volkov, AA, Vorobiev, AP, Wahl, HD, Wang, G, Warchol, J, Watts, G, Wayne, M, Weerts, H, White, A, White, JT, Wightman, JA, Willis, S, Wimpenny, SJ, Wirjawan, JVD, Womersley, J, Won, E, Wood, DR, Xu, H, Yamada, R, Yamin, P, Yang, J, Yasuda, T, Yepes, P, Yoshikawa, C, Youssef, S, Yu, J, Yu, Y, Zhou, Z, Zhu, ZH, Zieminska, D, Zieminski, A, Zverev, EG, and Zylberstejn, A

Published
1998

45. Isolated photon cross section in the central and forward rapidity regions in p(p)over-bar collisions at root s=1.8TeV

Author

Abachi, S, Abbott, B, Abolins, M, Acharya, BS, Adam, I, Adams, DL, Admas, M, Ahn, S, Aihara, H, Alitti, J, Alvarez, G, Alves, GA, Amidi, E, Amos, N, Anderson, EW, Aronson, SH, Astur, R, Avery, RE, Baarmand, MM, Baden, A, Balamurali, V, Balderston, J, Baldin, B, Banerjee, S, Bantly, J, Bartlett, JF, Bazizi, K, Bendich, J, Beri, SB, Bertram, I, Bezzubov, VA, Bhat, PC, Bhatnagar, V, Bhattacharjee, M, Bischoff, A, Biswas, N, Blazey, G, Blessing, S, Bloom, P, Boehnlein, A, Bojko, NI, Borcherding, F, Borders, J, Boswell, C, Brandt, A, Brock, R, Bross, A, Buchholz, D, Burtovoi, VS, Butler, JM, Carvalho, W, Casey, D, CastillaValdez, H, Chakraborty, D, Chang, SM, Chekulaev, SV, Chen, LP, Chen, W, Choi, S, Chopra, S, Choudhary, BC, Christenson, JH, Chung, M, Claes, D, Clark, AR, Cobau, WG, Cochran, J, Cooper, WE, Cretsinger, C, CullenVidal, D, Cummings, MAC, Cutts, D, Dahl, OI, De, K, Demarteau, M, Denisenko, N, Denisov, D, Denisov, SP, Diehl, HT, Diesburg, M, DiLoreto, G, Dixon, R, Draper, P, Drinkard, J, Ducros, Y, Dugad, SR, Edmunds, D, Ellison, J, Elvira, VD, Engelmann, R, Eno, S, Eppley, G, Ermolov, P, Eroshin, OV, Evdokimov, VN, Fahey, S, Fahland, T, Fatyga, M, Fatyga, MK, Featherly, J, Feher, S, Fein, D, Ferbel, T, Finocchiaro, G, Fisk, HE, Fisyak, Y, Flattum, E, Forden, GE, Fortner, M, Frame, KC, Franzini, P, Fuess, S, Gallas, E, Galyaev, AN, Geld, TL, Genik, RJ, Genser, K, Gerber, CE, Gibbard, B, Glebov, V, Glenn, S, Glicenstein, JF, Gobbi, B, Goforth, M, Goldschmidt, A, Gomez, B, Gomez, G, Goncharov, PI, Solis, JLG, Gordon, H, Goss, LT, Graf, N, Grannis, PD, Green, DR, Green, J, Greenlee, H, Griffin, G, Grossman, N, Grudberg, P, Grunendahl, S, Gu, WS, Guglielmo, G, Guida, JA, Guida, JM, Guryn, W, Gurzhiev, SN, Gutierrez, P, Gutnikov, YE, Hadley, NJ, Haggerty, H, Hagopian, S, Hagopian, V, Hahn, KS, Hall, RE, Hansen, S, Hatcher, R, Hauptman, JM, Hedin, D, Heinson, AP, Heintz, U, HernandezMontoya, R, Heuring, T, Hirosky, R, Hobbs, JD, Hoeneisen, B, Hoftun, JS, Hsieh, F, Hu, T, Huehn, T, Igarashi, S, Ito, AS, James, E, Jaques, J, Jerger, SA, Jiang, JZY, JoffeMinor, T, Johari, H, Johns, K, Johnson, M, Johnstad, H, Jonckheere, A, Jones, M, Jostlein, H, Jun, SY, Jung, CK, Kahn, S, Kalbfleisch, G, Kang, JS, Kehoe, R, Kelly, ML, Kerth, L, Kim, CL, Kim, SK, Klatchko, A, Klima, B, Klochkov, BI, Klopfenstein, C, Klyukhin, VI, Kochetkov, VI, Kohli, JM, Koltick, D, Kostritskiy, AV, Kotcher, J, Kourlas, J, Kozelov, AV, Kozlovski, EA, Krishnaswamy, MR, Krzywdzinski, S, Kunori, S, Lami, S, Landsberg, G, Lebrat, JF, Leflat, A, Li, H, Li, J, Li, YK, LiDemarteau, QZ, Lima, JGR, Lincoln, D, Linn, SL, Linnemann, J, Lipton, R, Liu, YC, Lobkowicz, F, Loken, SC, Lokos, S, Lueking, L, Lyon, AL, Maciel, AKA, Madaras, RJ, Madden, R, Mani, S, Mao, HS, Margulies, S, Markeloff, R, Markosky, L, Marshall, T, Martin, MI, May, B, Mayorov, AA, McCarthy, R, McKibben, T, McKinley, J, McMahon, T, Melanson, HL, Neto, JRTD, Merritt, KW, Miettinen, H, Mincer, A, deMiranda, JM, Mishra, CS, Mokhov, N, Mondal, NK, Montgomery, HE, Mooney, P, daMotta, H, Mudan, M, Murphy, C, Nang, F, Narain, M, Narasimham, VS, Narayanan, A, Neal, HA, Negret, JP, Neis, E, Nemethy, P, Nesic, D, Nichola, M, Norman, D, Oesch, L, Oguri, V, Oltman, E, Oshima, N, Owen, D, Padley, P, Pang, M, Para, A, Park, CH, Park, YM, Partridge, R, Parua, N, Paterno, M, Perkins, J, Peryshkin, A, Peters, M, Piekarz, H, Pischalnikov, Y, Podstavkov, VM, Pope, BG, Prosper, HB, Protopopescu, S, Puseljic, D, Qian, J, Quintas, PZ, Raja, R, Rajagopalan, S, Ramirez, O, Rao, MVS, Rapidis, PA, Rasmussen, L, Read, AL, Reucroft, S, Rijssenbeek, M, Rockwell, T, Roe, NA, Rubinov, P, Ruchti, R, Rutherfoord, J, Santoro, A, Sawyer, L, Schamberger, RD, Schellman, H, Sculli, J, Shabalina, E, Shaffer, C, Shankar, HC, Shivpuri, RK, Shupe, M, Singh, JB, Sirotenko, V, Smart, W, Smith, A, Smith, RP, Snihur, R, Snow, GR, Snow, J, Synder, S, Solomon, J, Sood, PM, Sosebee, M, Souza, M, Spadafora, AL, Stephens, RW, Stevenson, ML, Stewart, D, Stoianova, DA, Stoker, D, Streets, K, Strovink, M, Sznajder, A, Tamburello, P, Tarazi, J, Tartaglia, M, Taylor, TL, Thompson, J, Trippe, TG, Tuts, PM, Varelas, N, Varnes, EW, Virador, PRG, Vititoe, D, Volkov, AA, Vorobiev, AP, Wahl, HD, Wang, G, Warchol, J, Watts, G, Wayne, M, Weerts, H, Wen, F, White, A, White, JT, Wightman, JA, Wilcox, J, Willis, S, Wimpenny, SJ, Wirjawan, JVD, Womersley, J, Won, E, Wood, DR, Xu, H, Yamada, R, Yamin, P, Yanagisawa, C, Yang, J, Yasuda, T, Yepes, P, Yoshikawa, C, Youssef, S, Yu, J, Yu, Y, Zhu, Q, Zhu, ZH, Zieminska, D, Zieminski, A, Zverev, EG, and Zylberstejn, A

Subjects
Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, Nuclear Experiment
Abstract

A measurement of the cross section for production of single, isolated photons is reported for transverse energies in the range of 10-125 GeV for two regions of pseudorapidity, |η| < 0.9 and 1.6 < |η| < 2.5. The data represent 12.9 pb-1 of integrated luminosity accumulated in p̄p collisions at √s = 1.8 TeV and recorded with the DO detector at the Fermilab Tevatron Collider. The background, predominantly from jets which fragment to neutral mesons, is estimated using the longitudinal shower shape in the calorimeter. In both pseudorapidity regions the cross section is found to agree with the next-to-leading order QCD prediction for 30 ≲ ET y ≲ 80 GeV.

Published
1996

46. Search for anomalous WW and WZ production in p(p)over-bar collisions at root s=1.8 TeV

Author

Abachi, S, Abbott, B, Abolins, M, Acharya, BS, Adam, I, Adams, L, Adams, M, Ahn, S, Aihara, H, Alitti, J, Alvarez, G, Alves, GA, Amidi, E, Amos, N, Anderson, EW, Aronson, SH, Astur, R, Avery, RE, Baarmand, MM, Baden, A, Balamurali, V, Balderston, J, Baldin, B, Banerjee, S, Bantly, J, Bartlett, JF, Bazizi, K, Bendich, J, Beri, SB, Bertram, I, Bezzubov, VA, Bhat, PC, Bhatnagar, V, Bhattacharjee, M, Bischoff, A, Biswas, N, Blazey, G, Blessing, S, Bloom, P, Boehnlein, A, Bojko, NI, Borcherding, F, Borders, J, Boswell, C, Brandt, A, Brock, R, Bross, A, Buchholz, D, Burtovoi, VS, Butler, JM, Carvalho, W, Casey, D, CastillaValdez, H, Chakraborty, D, Chang, SM, Chekulaev, SV, Chen, LP, Chen, W, Choi, S, Chopra, S, Choudhary, BC, Christenson, JH, Chung, M, Claes, D, Clark, AR, Cobau, WG, Cochran, J, Cooper, WE, Cretsinger, C, CullenVidal, D, Cummings, MAC, Cutts, D, Dahl, OI, De, K, Demarteau, M, Denisenko, N, Denisov, D, Denisov, SP, Diehl, HT, Diesburg, M, DiLoreto, G, Dixon, R, Draper, P, Drinkard, J, Ducros, Y, Dugad, SR, Edmunds, D, Ellison, J, Elvira, VD, Engelmann, R, Eno, S, Eppley, G, Ermolov, P, Eroshin, OV, Evdokimov, VN, Fahey, S, Fahland, T, Fatyga, M, Fatyga, MK, Featherly, J, Feher, S, Fein, D, Ferbel, T, Finocchiaro, G, Fisk, HE, Fisyak, Y, Flattum, E, Forden, GE, Fortner, M, Frame, KC, Franzini, P, Fuess, S, Gallas, E, Galyaev, AN, Geld, TL, Genik, RJ, Genser, K, Gerber, CE, Gibbard, B, Glebov, V, Glenn, S, Glicenstein, JF, Gobbi, B, Goforth, M, Goldschmidt, A, Gomez, B, Gomez, G, Goncharov, PI, Solis, JLG, Gordon, H, Goss, LT, Graf, N, Grannis, PD, Green, DR, Green, J, Greenlee, H, Griffin, G, Grossman, N, Grudberg, P, Grunendahl, S, Gu, WX, Guglielmo, G, Guida, JA, Guida, JM, Guryn, W, Gurzhiev, SN, Gutierrez, P, Gutnikov, YE, Hadley, NJ, Haggerty, H, Hagopian, S, Hagopian, V, Hahn, KS, Hall, RE, Hansen, S, Hatcher, R, Hauptman, JM, Hedin, D, Heinson, AP, Heintz, U, HernandezMontoya, R, Heuring, T, Hirosky, R, Hobbs, JD, Hoeneisen, B, Hoftun, JS, Hsieh, F, Hu, T, Huehn, T, Igarashi, S, Ito, AS, James, E, Jaques, J, Jerger, SA, Jiang, JZY, JoffeMinor, T, Johari, H, Johns, K, Johnson, M, Johnstad, H, Jonckheere, A, Jones, M, Jostlein, H, Jun, SY, Jung, CK, Kahn, S, Kalbfleisch, G, Kang, JS, Kehoe, R, Kelly, ML, Kerth, L, Kim, CL, Kim, SK, Klatchko, A, Klima, B, Klochkov, BI, Klopfenstein, C, Klyukhin, VI, Kochetkov, VI, Kohli, JM, Koltick, D, Kostritskiy, AV, Kotcher, J, Kourlas, J, Kozelov, AV, Kozlovski, EA, Krishnaswamy, MR, Krzywdzinski, S, Kunori, S, Lami, S, Landsberg, G, Lebrat, JF, Leflat, A, Li, H, Li, J, Li, YK, LiDemarteau, QZ, Lima, JGR, Lincoln, D, Linn, SL, Linnemann, J, Lipton, R, Liu, YC, Lobkowicz, F, Loken, SC, Lokos, S, Lueking, L, Lyon, AL, Maciel, AKA, Madaras, RJ, Madden, R, MaganaMendoza, L, Mani, S, Mao, HS, Markeloff, R, Markosky, L, Marshall, T, Martin, MI, May, B, Mayorov, AA, McCarthy, R, McKibben, T, McKinley, J, McMahon, T, Melanson, HL, deMello, JRT, Merritt, KW, Miettinen, H, Mincer, A, deMiranda, JM, Mishra, CS, Mokhov, N, Mondal, NK, Montgomery, HE, Mooney, P, deMotta, H, Mudan, M, Murphy, C, Nang, F, Narain, M, Narasimham, VS, Narayanan, A, Neal, HA, Negret, JP, Neis, E, Nemethy, P, Nesic, D, Nicola, M, Norman, D, Oesch, L, Oguri, V, Oltman, E, Oshima, N, Owen, D, Padley, P, Pang, M, Para, A, Park, CH, Park, YM, Partridge, R, Parua, N, Paterno, M, Perkins, J, Peryshkin, A, Peters, M, Piekarz, H, Pischalnikov, Y, Podstavkov, VM, Pope, BG, Prosper, HB, Protopopescu, S, Puseljic, D, Qian, J, Quintas, PZ, Raja, R, Rajagopalan, S, Ramirez, O, Rao, MVS, Rapidis, PA, Rasmussen, L, Reucroft, S, Rijssenbeek, M, Rockwell, T, Roe, NA, Rubinov, P, Ruchti, R, Rutherford, J, SanchezHernandez, A, Santoro, A, Sawyer, L, Schamberger, RD, Schellman, H, Sculli, J, Shabalina, E, Shaffer, C, Shankar, HC, Shivpuri, RK, Shupe, M, Singh, JB, Sirotenko, V, Smart, W, Smith, A, Smith, RP, Snihur, R, Snow, J, Snyder, S, Solomon, J, Sood, PM, Sosebee, M, Souza, M, Spadafora, ML, Stephens, RW, Stevenson, ML, Stewart, D, Stoianova, DA, Stoker, D, Streets, K, Strovink, M, Sznajder, A, Tamburello, P, Tarazi, J, Tartaglia, M, Taylor, TL, Thompson, J, Trippe, TG, Tuts, PM, Varelas, N, Varnes, EW, Virador, PRG, Vititoe, D, Volkov, AA, Vorobiev, AP, Wahl, HD, Wang, G, Warchol, J, Watts, G, Wayne, M, Weerts, H, White, A, White, JT, Wightman, JA, Wilcox, J, Willis, S, Wimpenny, SJ, Wirjawan, JVD, Womeraley, J, Won, E, Wood, DR, Xu, H, Yamada, R, Yamin, P, Yanagisawa, C, Yang, J, Yasuda, T, Yepes, P, Yoshikawa, C, Youssef, S, Yu, J, Yu, Y, Zhu, ZH, Zieminska, D, Zieminski, A, Zverev, EG, and Zylberstejn, A

Subjects
High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract

We present results from a search for anomalous WW and WZ production in p p̄ collisions at √s = 1.8 TeV. We used p p̄ →jjX events observed during the 1992-1993 run of the Fermilab Tevatron collider. corresponding to an integrated luminosity of 13.7 ± 0.7 pb -1. A fit to the transverse momentum spectrum of the W boson yields direct limits on the CP-conserving anomalous WWγ and WWZ coupling parameters of -0.9 < Δκ < 1.1 (with λ = 0) and -0.6 < λ < 0.7 (with Δκ = 0) at the 95% confidence level, for a form factor scale Λ = 1.5 TeV, assuming that the WWγ and WWZ coupling parameters are equal.

Published
1996

47. Studies of topological distributions of inclusive three- and four-jet events in p(p)over-bar collisions at root s=1800GeV with the D0 detector

Author

Abachi, S, Abbott, B, Abolins, M, Acharya, BS, Adam, I, Adams, DL, Adams, M, Ahn, S, Aihara, H, Alitti, J, Alvarez, G, Alves, GA, Amidi, E, Amos, N, Anderson, EW, Aronson, SH, Astur, R, Avery, RE, Baden, A, Balamurali, V, Balderston, J, Baldin, B, Bantly, J, Bartlett, JF, Bazizi, K, Bendich, J, Beri, SB, Bertram, I, Bezzubov, VA, Bhat, PC, Bhatnagar, V, Bhattacharjee, M, Bischoff, A, Biswas, N, Blazey, G, Blessing, S, Bloom, P, Boehnlein, A, Bojko, NI, Borcherding, F, Borders, J, Boswell, C, Brandt, A, Brock, R, Bross, A, Buchholz, D, Burtovoi, VS, Butler, JM, Carvalho, W, Casey, D, CastillaValdez, H, Chakraborty, D, Chang, SM, Chekulaev, SV, Chen, LP, Chen, W, Chevalier, L, Chopra, S, Choudhary, BC, Christenson, JH, Chung, M, Claes, D, Clark, AR, Cobau, WG, Cochran, J, Cooper, WE, Cretsinger, C, CullenVidal, D, Cummings, MAC, Cutts, D, Dahl, OI, De, K, Demarteau, M, Demina, R, Denisenko, K, Denisenko, N, Denisov, D, Denisov, SP, Dharmaratna, W, Diehl, HT, Diesburg, M, DiLoreto, G, Dixon, R, Draper, P, Drinkard, J, Ducros, Y, Dugad, SR, DurstonJohnson, S, Edmunds, D, Ellison, J, Elvira, VD, Engelmann, R, Eno, S, Eppley, G, Ermolov, P, Eroshin, OV, Evdokimov, VN, Fahey, S, Fahland, T, Fatyga, M, Fatyga, MK, Featherly, J, Feher, S, Fein, D, Ferbel, T, Finocchiaro, G, Fisk, HE, Fisyak, Y, Flattum, E, Forden, GE, Fortner, M, Frame, KC, Franzini, P, Fuess, S, Gallas, E, Galyaev, AN, Gao, SG, Geld, TL, Genik, RJ, Genser, K, Gerber, CE, Gibbard, B, Glebov, V, Glenn, S, Gobbi, B, Goforth, M, Goldschmidt, A, Gomez, B, Goncharov, PI, Solis, JLG, Gordon, H, Goss, LT, Graf, N, Grannis, PD, Green, DR, Green, J, Greenlee, H, Griffin, G, Grossman, N, Grudberg, P, Grunendahl, S, Gu, WX, Guglielmo, G, Guida, JA, Guida, JM, Guryn, W, Gurzhiev, SN, Gutierrez, P, Gutnikov, YE, Hadley, NJ, Haggerty, H, Hagopian, S, Hagopian, V, Hahn, KS, Hall, RE, Hansen, S, Hatcher, R, Hauptman, JM, Hedin, D, Heinson, AP, Heintz, U, HernandezMontoya, R, Heuring, T, Hirosky, R, Hobbs, JD, Hoeneisen, B, Hoftun, JS, Hsieh, F, Hu, T, Huehn, T, Igarashi, S, Ito, AS, James, E, Jaques, J, Jerger, SA, Jiang, JZY, JoffeMinor, T, Johari, H, Johns, K, Johnson, M, Johnstad, H, Jonckheere, A, Jones, M, Jostlein, H, Jun, SY, Jung, CK, Kahn, S, Kalbfleisch, G, Kang, JS, Kehoe, R, Kelly, ML, Kernan, A, Kerth, L, Kim, CL, Kim, SK, Klatchko, A, Klima, B, Klochkov, BI, Klopfenstein, C, Klyukhin, VI, Kochetkov, VI, Kohli, JM, Koltick, D, Kostritskiy, AV, Kotcher, J, Kourlas, J, Kozelov, AV, Kozlovski, EA, Krishnaswamy, MR, Krzywdzinski, S, Kunori, S, Lami, S, Landsberg, G, Lebrat, JF, Leflat, A, Li, H, Li, J, Li, YK, LiDemarteau, QZ, Lima, JGR, Lincoln, D, Linn, SL, Linnemann, J, Lipton, R, Liu, YC, Lobkowicz, F, Loken, SC, Lokos, S, Lueking, L, Lyon, AL, Maciel, AKA, Madaras, RJ, Madden, R, Mandrichenko, IV, Mangeot, P, Mani, S, Mansoulie, B, Mao, HS, Margulies, S, Markeloff, R, Markosky, L, Marshall, T, Martin, MI, Marx, M, May, B, Mayorov, AA, McCarthy, R, McKibben, T, McKinley, J, McMahon, T, Melanson, HL, Neto, JRTD, Merritt, KW, Miettinen, H, Milder, A, Mincer, A, deMiranda, JM, Mishra, CS, MohammadiBaarmand, M, Mokhov, N, Mondal, NK, Montgomery, HE, Mooney, P, Mudan, M, Murphy, C, Murphy, CT, Nang, F, Narain, M, Narasimham, VS, Narayanan, A, Neal, HA, Negret, JP, Neis, E, Nemethy, P, Nesic, D, Nicola, M, Norman, D, Oesch, L, Oguri, V, Oltman, E, Oshima, N, Owen, D, Padley, P, Pang, M, Para, A, Park, CH, Park, YM, Partridge, R, Parua, N, Paterno, M, Perkins, J, Peryshkin, A, Peters, M, Piekarz, H, Pischalnikov, Y, Pluquet, A, Podstavkov, VM, Pope, BG, Prosper, HB, Protopopescu, S, Puseljic, D, Qian, J, Quintas, PZ, Raja, R, Rajagopalan, S, Ramirez, O, Rao, MVS, Rapidis, PA, Rasmussen, L, Read, AL, Reucroft, S, Rijssenbeek, M, Rockwell, T, Roe, NA, Rubinov, P, Ruchti, R, Rusin, S, Rutherfoord, J, Santoro, A, Sawyer, L, Schamberger, RD, Schellman, H, Sculli, J, Shabalina, E, Shaffer, C, Shankar, HC, Shao, YY, Shivpuri, RK, Shupe, M, Singh, JB, Sirotenko, V, Smart, W, Smith, A, Smith, RP, Snihur, R, Snow, GR, Snyder, S, Solomon, J, Sood, PM, Sosebee, M, Souza, M, Spadafora, AL, Stephens, RW, Stevenson, ML, Stewart, D, Stoianova, DA, Stoker, D, Streets, K, Strovink, M, Sznajder, A, Taketani, A, Tamburello, P, Tarazi, J, Tartaglia, M, Taylor, TL, Teiger, J, Thompson, J, Trippe, TG, Tuts, PM, Varelas, N, Varnes, EW, Virador, PRG, Vititoe, D, Volkov, AA, Vorobiev, AP, Wahl, HD, Wang, G, Wang, J, Warchol, J, Wayne, M, Weerts, H, Wen, F, Wenzel, WA, White, A, White, JT, Wightman, JA, Wilcox, J, Willis, S, Wimpenny, SJ, Wirjawan, JVD, Womersley, J, Won, E, Wood, DR, Xu, H, Yamada, R, Yamin, P, Yanagisawa, C, Yang, J, Yasuda, T, Yoshikawa, C, Youssef, S, Yu, J, Yu, Y, Zhang, DH, Zhang, Y, Zhu, Q, Zhu, ZH, Zieminska, D, Zieminski, A, and Zylberstejn, A

Subjects
High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract

The global topologies of inclusive three- and four-jet events produced in p̄p interactions are described. The three- and four-jet events are selected from data recorded by the DO detector at the Fermilab Tevatron Collider operating at a center-of-mass energy of √s = 1800 GeV. The measured, normalized distributions of various topological variables are compared with parton-level predictions of tree-level QCD calculations. The parton-level QCD calculations are found to be in good agreement with the data. The studies also show that the topological distributions of the different subprocesses involving different numbers of quarks are very similar and reproduce the measured distributions well. The parton-shower Monte Carlo generators provide a less satisfactory description of the topologies of the three- and four-jet events. © 1996 The American Physical Society.

Published
1996

48. Search for right-handed W bosons and heavy W' in p(p)over-bar collisions at root s=1.8 TeV

Author

Abachi, S, Abbott, B, Abolins, M, Acharya, BS, Adam, I, Adams, DL, Adams, M, Ahn, S, Aihara, H, Alitti, J, Alvarez, G, Alves, GA, Amidi, E, Amos, N, Anderson, EW, Aronson, SH, Astur, R, Avery, RE, Baden, A, Balamurali, V, Balderston, J, Baldin, B, Bantly, J, Bartlett, JF, Bazizi, K, Bendich, J, Beri, SB, Bertram, I, Bezzubov, VA, Bhat, PC, Bhatnagar, V, Bhattacharjee, M, Bischoff, A, Biswas, N, Blazey, G, Blessing, S, Bloom, P, Boehnlein, A, Bojko, NI, Borcherding, F, Borders, J, Boswell, C, Brandt, A, Brock, R, Bross, A, Buchholz, D, Burtovoi, VS, Butler, JM, Carvalho, W, Casey, D, CastillaValdez, H, Chakraborty, D, Chang, SM, Chekulaev, SV, Chen, LP, Chen, W, Chopra, S, Choudhary, BC, Christenson, JH, Chung, M, Claes, D, Clark, AR, Coban, WG, Cochran, J, Cooper, WE, Cretsinger, C, CullenVidal, D, Cummings, MAC, Cutts, D, Dahl, OI, De, K, Demarteau, M, Demina, R, Denisenko, K, Denisenko, N, Denisov, D, Denisov, SP, Diehl, HT, Diesburg, M, DiLoreto, G, Dixon, R, Draper, P, Drinkard, J, Ducros, Y, Dugad, SR, DurstonJohnson, S, Edmunds, D, Ellison, J, Elvira, VD, Engelmann, R, Eno, S, Eppley, G, Ermolov, P, Eroshin, OV, Evdokimov, VN, Fahey, S, Fahland, T, Fatyga, M, Fatyga, MK, Featherly, J, Feher, S, Fein, D, Ferbel, T, Finocchiaro, G, Fisk, HE, Fisyak, Y, Flattum, E, Forden, GE, Fortner, M, Frame, KC, Franzini, P, Fuess, S, Gallas, E, Galyaev, AN, Geld, TL, Genik, RJ, Genser, K, Gerber, CE, Gibbard, B, Glebov, V, Glenn, S, Glicenstein, JF, Gobbi, B, Goforth, M, Goldschmidt, A, Gomez, B, Goncharov, PI, Solis, JLG, Gordon, H, Goss, LT, Graf, N, Grannis, PD, Green, DR, Green, J, Greenlee, H, Griffin, G, Grossman, N, Grudberg, P, Grunendahl, S, Gu, WX, Guglielmo, G, Guida, JA, Guida, JM, Guryn, W, Gurzhiev, SN, Gutierrez, P, Gutnikov, YE, Hadley, NJ, Haggerty, H, Hagopian, S, Hagopian, V, Hahn, KS, Hall, RE, Hansen, S, Hatcher, R, Hauptman, JM, Hedin, D, Heinson, AP, Heintz, U, HernandezMontoya, R, Heuring, T, Hirosky, R, Hobbs, JD, Hoeneisen, B, Hoftun, JS, Hsieh, F, Hu, T, Huehn, T, Igarashi, S, Ito, AS, James, E, Jaques, J, Jerger, SA, Jiang, JZY, JoffeMinor, T, Johari, H, Johns, K, Johnson, M, Johnstad, H, Jonckheere, A, Jones, M, Jostlein, H, Jun, SY, Jung, CK, Kahn, S, Kalbfleisch, G, Kang, JS, Kehoe, R, Kelly, ML, Kerth, L, Kim, CL, Kim, SK, Klatchko, A, Klima, B, Klochkov, BI, Klopfenstein, C, Klyukhin, VI, Kochetkov, VI, Kohli, JM, Koltick, D, Kostritskiy, AV, Kotcher, J, Kourlas, J, Kozelov, AV, Kozlovski, EA, Krishnaswamy, MR, Krzywdzinski, S, Kunori, S, Lami, S, Landsberg, G, Lebrat, JF, Leflat, A, Li, H, Li, J, Li, YK, LiDemarteau, QZ, Lima, JGR, Lincoln, D, Linn, SL, Linnemann, J, Lipton, R, Liu, YC, Lobkowicz, F, Loken, SC, Lokos, S, Lueking, L, Lyon, AL, Maciel, AKA, Madaras, RJ, Madden, R, Mani, S, Mao, HS, Margulies, S, Markeloff, R, Markosky, L, Marshall, T, Martin, MI, Marx, M, May, B, Mayorov, AA, McCarthy, R, McKibben, T, McKinley, J, McMahon, T, Melanson, HL, Neto, JRTD, Merritt, KW, Miettinen, H, Mincer, A, deMiranda, JM, Mishra, CS, MohammadiBaarmand, M, Mokhov, N, Mondal, NK, Montgomery, HE, Mooney, P, daMotta, H, Mudan, M, Murphy, C, Murphy, CT, Nang, F, Narain, M, Narasimham, VS, Narayanan, A, Neal, HA, Negret, JP, Neis, E, Nemethy, P, Nesic, D, Nicola, M, Norman, D, Oesch, L, Oguri, V, Oltman, E, Oshima, N, Owen, D, Padley, P, Pang, M, Para, A, Park, CH, Park, YM, Partridge, R, Parua, N, Paterno, M, Perkins, J, Peryshkin, A, Peters, M, Piekarz, H, Pischalnikov, Y, Podstavkov, VM, Pope, BG, Prosper, HB, Protopopescu, S, Puseljic, D, Qian, J, Quintas, PZ, Raja, R, Rajagopalan, S, Ramirez, O, Rao, MVS, Rapidis, PA, Rasmussen, L, Read, AL, Reucroft, S, Rijssenbeek, M, Rockwell, T, Roe, NA, Rubinov, P, Ruchti, R, Rutherfoord, J, Santoro, A, Sawyer, L, Schamberger, RD, Schellman, H, Sculli, J, Shabalina, E, Shaffer, C, Shankar, HC, Shao, YY, Shivpuri, RK, Shupe, M, Singh, JB, Sirotenko, V, Smart, W, Smith, A, Smith, RP, Snihur, R, Snow, GR, Snyder, S, Solomon, J, Sood, PM, Sosebee, M, Souza, M, Spadafora, AL, Stephens, RW, Stevenson, ML, Stewart, D, Stoianova, DA, Stoker, D, Streets, K, Strovink, M, Sznajder, A, Taketani, A, Tamburello, P, Tarazi, J, Tartaglia, M, Taylor, TL, Thompson, J, Trippe, TG, Tuts, PM, Varelas, N, Varnes, EW, Virador, PRG, Vititoe, D, Volkov, AA, Vorobiev, AP, Wahl, HD, Wang, G, Warchol, J, Watts, G, Wayne, M, Weerts, H, Wen, F, White, A, White, JT, Wightman, JA, Wilcox, J, Willis, S, Wimpenny, SJ, Wirjawan, JVD, Womersley, J, Won, E, Wood, DR, Xu, H, Yamada, R, Yamin, P, Yanagisawa, C, Yang, J, Yasuda, T, Yoshikawa, C, Youssef, S, Yu, J, Yu, Y, Zhang, DH, Zhu, Q, Zhu, ZH, Zieminska, D, Zieminski, A, Zverev, EG, and Zylberstejn, A

Subjects
High Energy Physics::Experiment
Abstract

We report on a search for right-handed W bosons (WR) with mass greater than 200 GeV/c2. We used data collected with the DO detector at the Fermilab Tevatron p p̄ collider at √s = 1.8 TeV to search for WR decays into an electron and a massive right-handed neutrino WR +- → e+-NR. Using the inclusive electron data, we set mass limits independent of the NR decay: mWR > 650 GeV/c2 and mWR > 720 GeV/c2 at the 95% confidence level, valid for mNR > 1/2mWR and mNR ≪ mWR. respectively. The latter also represents a new lower limit on the mass of a heavy left-handed W boson (W') decaying into ev. In addition, limits on mWRvalid for larger values of the NR mass are obtained assuming that NR decays to an electron and two jets.

Published
1996

49. Search for W̃1Z̄2 production via trilepton final states in pp̄ collisions at √s = 1.8 TeV

Author

Abachi, S, Abbott, B, Abolins, M, Acharya, BS, Adam, I, Adams, DL, Adams, M, Ahn, S, Aihara, H, Alitti, J, Álvarez, G, Alves, GA, Amidi, E, Amos, N, Anderson, EW, Aronson, SH, Astur, R, Avery, RE, Baden, A, Balamurali, V, Balderston, J, Baldin, B, Bantly, J, Bartlett, JF, Bazizi, K, Bendich, J, Beri, SB, Bertram, I, Bezzubov, VA, Bhat, PC, Bhatnagar, V, Bhattacharjee, M, Bischoff, A, Biswas, N, Blazey, G, Blessing, S, Bloom, P, Boehnlein, A, Bojko, NI, Borcherding, F, Borders, J, Boswell, C, Brandt, A, Brock, R, Bross, A, Buchholz, D, Burtovoi, VS, Butler, JM, Carvalho, W, Casey, D, Castilla-Valdez, H, Chakraborty, D, Chang, S-M, Chekulaev, SV, Chen, L-P, Chen, W, Chopra, S, Choudhary, BC, Christenson, JH, Chung, M, Claes, D, Clark, AR, Cobau, WG, Cochran, J, Cooper, WE, Cretsinger, C, Cullen-Vidal, D, Cummings, MAC, Cutts, D, Dahl, OI, De, K, Demarteau, M, Demina, R, Denisenko, K, Denisenko, N, Denisov, D, Denisov, SP, Diehl, HT, Diesburg, M, di Loreto, G, Dixon, R, Draper, P, Drinkard, J, Ducros, Y, Dugad, SR, Durston-Johnson, S, Edmunds, D, Ellison, J, Elvira, VD, Engelmann, R, Eno, S, Eppley, G, Ermolov, P, Eroshin, OV, Evdokimov, VN, Fahey, S, Fahland, T, Fatyga, M, Fatyga, MK, Featherly, J, Feher, S, Fein, D, Ferbel, T, Finocchiaro, G, Fisk, HE, Fisyak, Y, Flattum, E, Forden, GE, Fortner, M, Frame, KC, Franzini, P, Fuess, S, Gallas, E, Galyaev, AN, Geld, TL, Genik II, RJ, Genser, K, Gerber, CE, Gibbard, B, Glebov, V, Glenn, S, Glicenstein, JF, Gobbi, B, Goforth, M, Goldschmidt, A, Gómez, B, Goncharov, PI, González Solís, JL, Gordon, H, Goss, LT, Graf, N, Grannis, PD, Green, DR, Green, J, Greenlee, H, Griffin, G, Grossman, N, Grudberg, P, Grünendahl, S, Gu, WX, Guglielmo, G, Guida, JA, Guida, JM, Guryn, W, Gurzhiev, SN, Gutierrez, P, Gutnikov, YE, Hadley, NJ, Haggerty, H, Hagopian, S, Hagopian, V, Hahn, KS, Hall, RE, Hansen, S, Hatcher, R, Hauptman, JM, Hedin, D, Heinson, AP, Heintz, U, Hernández-Montoya, R, Heuring, T, Hirosky, R, Hobbs, JD, Hoeneisen, B, Hoftun, JS, Hsieh, F, Hu, T, Huehn, T, Igarashi, S, Ito, AS, James, E, Jaques, J, Jerger, SA, Jiang, JZ-Y, Joffe-Minor, T, Johari, H, Johns, K, Johnson, M, Johnstad, H, Jonckheere, A, Jones, M, Jöstlein, H, Jun, SY, Jung, CK, Kahn, S, Kalbfleisch, G, Kang, JS, Kehoe, R, Kelly, ML, Kernan, A, Kerth, L, Kim, CL, Kim, SK, Klatchko, A, Klima, B, Klochkov, BI, Klopfenstein, C, Klyukhin, VI, Kochetkov, VI, Kohli, JM, Koltick, D, Kostritskiy, AV, Kotcher, J, Kourlas, J, Kozelov, AV, Kozlovski, EA, Krishnaswamy, MR, Krzywdzinski, S, Kunori, S, Lami, S, Landsberg, G, Lebrat, J-F, Leflat, A, Li, H, Li, J, Li, YK, Li-Demarteau, QZ, Lima, JGR, Lincoln, D, Linn, SL, Linnemann, J, Lipton, R, Liu, YC, Lobkowicz, F, Loken, SC, Lökös, S, Lueking, L, Lyon, AL, Maciel, AKA, Madaras, RJ, Madden, R, Mani, S, Mao, HS, Margulies, S, Markeloff, R, Markosky, L, Marshall, T, Martin, MI, Marx, M, May, B, Mayorov, AA, McCarthy, R, McKibben, T, McKinley, J, McMahon, T, Melanson, HL, de Mello Neto, JRT, Merritt, KW, Miettinen, H, Mincer, A, de Miranda, JM, Mishra, CS, Mohommadi-Baarmand, M, Mokhov, N, Mondal, NK, Montgomery, HE, Mooney, P, da Motta, H, Mudan, M, Murphy, C, Murphy, CT, Nang, F, Narain, M, Narasimham, VS, Narayanan, A, Neal, HA, Negret, JP, Neis, E, Nemethy, P, Nešić, D, Nicola, M, Norman, D, Oesch, L, Oguri, V, Oltman, E, Oshima, N, Owen, D, Padley, P, Pang, M, Para, A, Park, CH, Park, YM, Partridge, R, Parua, N, Paterno, M, Perkins, J, Peryshkin, A, Peters, M, Piekarz, H, Pischalnikov, Y, Podstavkov, VM, Pope, BG, Prosper, HB, Protopopescu, S, Pušeljić, D, Qian, J, Quintas, PZ, Raja, R, Rajagopalan, S, Ramirez, O, Rao, MVS, Rapidis, PA, Rasmussen, L, Read, AL, Reucroft, S, Rijssenbeek, M, Rockwell, T, Roe, NA, Rubinov, P, Ruchti, R, Rusin, S, Rutherfoord, J, Santoro, A, Sawyer, L, Schamberger, RD, Schellman, H, Sculli, J, Shabalina, E, Shaffer, C, Shankar, HC, Shao, YY, Shivpuri, RK, Shupe, M, Singh, JB, Sirotenko, V, Smart, W, Smith, A, Smith, RP, Snihur, R, Snow, GR, Snyder, S, Solomon, J, Sood, PM, Sosebee, M, Souza, M, Spadafora, AL, Stephens, RW, Stevenson, ML, Stewart, D, Stoianova, DA, Stoker, D, Streets, K, Strovink, M, Sznajder, A, Taketani, A, Tamburello, P, Tarazi, J, Tartaglia, M, Taylor, TL, Thompson, J, Trippe, TG, Tuts, PM, Varelas, N, Varnes, EW, Virador, PRG, Vititoe, D, Volkov, AA, Vorobiev, AP, Wahl, HD, Wang, G, Warchol, J, Wayne, M, Weerts, H, Wen, F, White, A, White, JT, Wightman, JA, Wilcox, J, Willis, S, Wimpenny, SJ, Wirjawan, JVD, Womersley, J, Won, E, Wood, DR, Xu, H, Yamada, R, Yamin, P, Yanagisawa, C, Yang, J, Yasuda, T, Yoshikawa, C, Youssef, S, Yu, J, Yu, Y, Zhang, DH, Zhu, Q, Zhu, ZH, Zieminska, D, Zieminski, A, and Zylberstejn, A

Abstract

We have searched for associated production of the lightest chargino W̃1 and next-to-lightest neutralino Z̄2 of the minimal supersymmetric standard model in pp̄ collisions at √s = 1.8 TeV using the DO detector at the Fermilab Tevatron collider. Data corresponding to an integrated luminosity of 12.5 ± 0.7 pb-1 were examined for events containing three isolated leptons. No evidence for W̃1Z̃2 pair production was found. Limits on σ(W̃1Z̃2)B(W̃1 → lνZ̃1)B(Z̃2 → ll̄Z̃1) are presented.

Published
1996

50. Search for (W)over-tilde(1)(Z)over-tilde(2) production via trilepton final states in p(p)over-bar collisions at root s=1.8 TeV

Author

Abachi, S, Abbott, B, Abolins, M, Acharya, BS, Adam, I, Adams, DL, Adams, M, Ahn, S, Aihara, H, Alitti, J, Alvarez, G, Alves, GA, Amidi, E, Amos, N, Anderson, EW, Aronson, SH, Astur, R, Avery, RE, Baden, A, Balamurali, V, Balderston, J, Baldin, B, Bantly, J, Bartlett, JF, Bazizi, K, Bendich, J, Beri, SB, Bertram, I, Bezzubov, VA, Bhat, PC, Bhatnagar, V, Bhattacharjee, M, Bischoff, A, Biswas, N, Blazey, G, Blessing, S, Bloom, P, Boehnlein, A, Bojko, NI, Borcherding, F, Borders, J, Boswell, C, Brandt, A, Brock, R, Bross, A, Buchholz, D, Burtovoi, VS, Butler, JM, Carvalho, W, Casey, D, CastillaValdez, H, Chakraborty, D, Chang, SM, Chekulaev, SV, Chen, LP, Chen, W, Chopra, S, Choudhary, BC, Christenson, JH, Chung, M, Claes, D, Clark, AR, Cobau, WG, Cochran, J, Cooper, WE, Cretsinger, C, CullenVidal, D, Cummings, MAC, Cutts, D, Dahl, OI, De, K, Demarteau, M, Demina, R, Denisenko, K, Denisenko, N, Denisov, D, Denisov, SP, Diehl, HT, Diesburg, M, DiLoreto, G, Dixon, R, Draper, P, Drinkard, J, Ducros, Y, Dugad, SR, DurstonJohnson, S, Edmunds, D, Ellison, J, Elvira, VD, Engelmann, R, Eno, S, Eppley, G, Ermolov, P, Eroshin, OV, Evdokimov, VN, Fahey, S, Fahland, T, Fatyga, H, Fatyga, MK, Featherly, J, Feher, S, Fein, D, Ferbel, T, Finocchiaro, G, Fisk, HE, Fisyak, Y, Flattum, E, Forden, GE, Fortner, M, Frame, KC, Franzini, P, Fuess, S, Gallas, E, Galyaev, AN, Geld, TL, Genik, RJ, Genser, K, Gerber, CE, Gibbard, B, Glebov, V, Glenn, S, Glicenstein, JF, Gobbi, B, Goforth, M, Goldschmidt, A, Gomez, B, Goncharov, PI, Solis, JLG, Gordon, H, Goss, LT, Graf, N, Grannis, PD, Green, DR, Green, J, Greenlee, H, Griffin, G, Grossman, N, Grudberg, P, Grunendahl, S, Gu, WX, Guglielmo, G, Guida, JA, Guida, JM, Guryn, W, Gurzhiev, SN, Gutierrez, P, Gutnikov, YE, Hadley, NJ, Haggerty, H, Hagopian, S, Hagopian, V, Hahn, KS, Hall, RE, Hansen, S, Hatcher, R, Hauptman, JM, Hedin, D, Heinson, AP, Heintz, U, HernandezMontoya, R, Heuring, T, Hirosky, R, Hobbs, JD, Hoeneisen, B, Hoftun, JS, Hsieh, F, Hu, T, Huehn, T, Igarashi, S, Ito, AS, James, E, Jaques, J, Jerger, SA, Jiang, JZY, JoffeMinor, T, Johari, H, Johns, K, Johnson, M, Johnstad, H, Jonckheere, A, Jones, M, Jostlein, H, Jun, SY, Jung, CK, Kahn, S, Kalbfleisch, G, Kang, JS, Kehoe, R, Kelly, ML, Kernan, A, Kerth, L, Kim, CL, Kim, SK, Klatchko, A, Klima, B, Klochkov, BI, Klopfenstein, C, Klyukhin, VI, Kochetkov, V, Kohli, JM, Koltick, D, Kostritskiy, A, Kotcher, J, Kourlas, J, Kozelov, AV, Kozlovski, EA, Krishnaswamy, MR, Krzywdzinski, S, Kunori, S, Lami, S, Landsberg, G, Lebrat, JF, Leflat, A, Li, H, Li, J, Li, YK, LiDemarteau, QZ, Lima, JGR, Lincoln, D, Linn, SL, Linnemann, J, Lipton, R, Liu, YC, Lobkowicz, F, Loken, SC, Lokos, S, Lueking, L, Lyon, AL, Maciel, AKA, Madaras, RJ, Madden, R, Mani, S, Mao, HS, Margulies, S, Markeloff, R, Markosky, L, Marshall, T, Martin, MI, Marx, M, May, B, Mayorov, AA, McCarthy, R, McKibben, T, McKinley, J, McMahon, T, Melanson, HL, deMelloNeto, JRT, Merritt, KW, Miettinen, H, Mincer, A, deMiranda, JM, Mishra, CS, MohommadiBaarmand, M, Mokhov, N, Mondal, NK, Montgomery, HE, Mooney, P, daMotta, H, Mudan, H, Murphy, C, Murphy, CT, Nang, F, Narain, M, Narasimham, VS, Narayanan, A, Neal, HA, Negret, JP, Neis, E, Nemethy, P, Nesic, D, Nicola, M, Norman, D, Oesch, L, Oguri, V, Oltman, E, Oshima, N, Owen, D, Padley, P, Pang, M, Para, A, Park, CH, Park, YM, Partridge, R, Parua, N, Paterno, M, Perkins, J, Peryshkin, A, Peters, M, Piekarz, H, Pischalnikov, Y, Podstavkov, VM, Pope, BG, Prosper, HB, Protopopescu, S, Puseljic, D, Qian, J, Quintas, PZ, Raja, R, Rajagopalan, S, Ramirez, O, Rao, MVS, Rapidis, PA, Rasmussen, L, Read, AL, Reucroft, S, Rijssenbeek, M, Rockwell, T, Roe, NA, Rubinov, P, Ruchti, R, Rusin, S, Rutherfoord, J, Santoro, A, Sawyer, L, Schamberger, RD, Schellman, H, Sculli, J, Shabalina, E, Shaffer, C, Shankar, HC, Shao, YY, Shivpuri, RK, Shupe, H, Singh, JB, Sirotenko, V, Smart, W, Smith, A, Smith, RP, Snihur, R, Snow, GR, Snyder, S, Solomon, J, Sood, PM, Sosebee, M, Souza, M, Spadafora, AL, Stephens, RW, Stevenson, ML, Stewart, D, Stoianova, DA, Stoker, D, Streets, K, Strovink, M, Sznajder, A, Taketani, A, Tamburello, P, Tarazi, J, Tartaglia, M, Taylor, TL, Thompson, J, Trippe, TG, Tuts, PM, Varelas, N, Varnes, EW, Virador, PRG, Vititoe, D, Volkov, AA, Vorobiev, AP, Wahl, HD, Wang, G, Warchol, J, Wayne, H, Weerts, H, Wen, F, White, A, White, JT, Wightman, JA, Wilcox, J, Willis, S, Wimpenny, SJ, Wirjawan, JVD, Womersley, J, Won, E, Wood, DR, Xu, H, Yamada, R, Yamin, P, Yanagisawa, C, Yang, J, Yasuda, T, Yoshikawa, C, Youssef, S, Yu, J, Yu, Y, Zhang, D, Zhu, Q, Zhu, ZH, Zieminska, D, Zieminski, A, and Zylberstejn, A

Published
1996

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