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111 results on '"K. O'Shaughnessy"'

1. 1.1 GENOME WIDE ASSOCIATION SCAN IDENTIFIES LOCI FOR ARTERIAL STIFFNESS IN YOUNG HEALTHY ADULTS

Author: Yasmin, C. McEniery, S. Cleary, B. Lam, H. Kuper, Y. Endo, S. Kinra, D. Chen, G. Chandak, J. Deanfield, D. Lawlor, J. Cockcroft, I. Wilkinson, and K. O’Shaughnessy
Subjects: Specialties of internal medicine, RC581-951, Diseases of the circulatory (Cardiovascular) system, RC666-701
Published: 2014
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2. 4.2 GENETIC VARIATIONS ON CHROMOSOME 14 INFLUENCE BCL11B GENE EXPRESSION LEVELS AND AORTIC STIFFNESS

Author: R. Al Maskari, S. Cleary, Y. Li, A. Khir, G. Mitchell, I. Wilkinson, K. O’Shaughnessy, and Yasmin
Subjects: Specialties of internal medicine, RC581-951, Diseases of the circulatory (Cardiovascular) system, RC666-701
Published: 2014
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3. Coeliac: A Gut Feeling. An Investigation Into What Factors Influence Patterns Of Clinical Presentation In Adult Onset Coeliac Disease

Author: T Hayes, L Jackson, K O’Shaughnessy, W Stack, and E Kenny
Subjects: Pediatrics, medicine.medical_specialty, Feeling, business.industry, media_common.quotation_subject, medicine, Presentation (obstetrics), business, medicine.disease, Coeliac disease, media_common
Published: 2021
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4. A paediatric ECMO case of plasma leakage through a polymethylpentene oxygenator

Author: K O’Shaughnessy, M C Gill, and J Dittmer
Subjects: Male, Advanced and Specialized Nursing, medicine.medical_specialty, Oxygenators, business.industry, Polymethylpentene, Infant, Plasma leakage, A protein, General Medicine, Surgery, chemistry.chemical_compound, Extracorporeal Membrane Oxygenation, surgical procedures, operative, chemistry, Anesthesia, medicine, Humans, Radiology, Nuclear Medicine and imaging, Cardiology and Cardiovascular Medicine, business, Safety Research, Oxygenator
Abstract: Polymethylpentene (PMP) oxygenators, utilised for ECMO, are commonly believed to be resistant to plasma leakage. Whilst uncommon, plasma leakage has been previously reported with PMP fibres, both in vivo and in vitro. We describe a paediatric ECMO case during which plasma leakage occurred and oxygenator function gradually deteriorated, ultimately necessitating device replacement. To our knowledge, this is the first case of plasma leakage described using a PMP device during paediatric ECMO. Subsequent investigation is described, demonstrating that a protein coating reduces the free passage of solution across the PMP membrane.
Published: 2015
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5. The Effects of Targeted Muscle Reinnervation on Neuromas in a Rabbit Rectus Abdominis Flap Model

Author: Todd A. Kuiken, Gregory A. Dumanian, Jason H. Ko, Eric A. Pohlmeyer, Kristina K. O'Shaughnessy, and Peter S. Kim
Subjects: medicine.medical_specialty, Rectus Abdominis, Electromyography, Amputation, Surgical, Surgical Flaps, Segmental innervation, Neuroma, Forelimb, medicine, Animals, Orthopedics and Sports Medicine, Nerve Transfer, Ulnar Nerve, Radial nerve, medicine.diagnostic_test, business.industry, Amputation Stumps, Anatomy, medicine.disease, Median nerve, Median Nerve, Surgery, Disease Models, Animal, medicine.anatomical_structure, Targeted reinnervation, Radial Nerve, Amputation Neuroma, Rabbits, sense organs, business, Reinnervation
Abstract: Purpose A targeted muscle reinnervation (TMR) model was created using a pedicled rabbit rectus abdominis (RA) flap to receive the input from previously amputated forelimb neuromas. We hypothesize that a segmental muscle flap can undergo TMR and that it is possible to differentiate the signal from 3 independent nerves. In addition, by virtue of the nerve coaptation, the morphology of the previous amputation neuroma would become more like that of an in-continuity neuroma. Methods Five New Zealand white rabbits had a forelimb amputation. In a second-stage surgery, an RA flap was transposed onto the chest wall. After neuroma excision, 3 neurorrhaphies were made between the median nerve, radial nerve, and ulnar nerves, and 3 motor nerves of the RA. After 10 weeks, the electrophysiologic properties of the reinnervated flap were tested. Nerve specimens from the median, radial, and ulnar nerves were harvested before and after TMR to quantify the histomorphometric changes effected by TMR on the mixed nerve neuromas. Results Of the 12 nerve coaptations performed in the 4 viable flaps, all 12 were grossly successful. Muscle surface EMG data demonstrated that the RA retained its segmental innervation pattern after TMR. Similarly, prolonged stimulation of 1 nerve reinnervating the RA resulted in the depletion of glycogen specific to the territory of the muscle stimulated by that nerve. TMR was found to favorably alter the histomorphometric characteristics of the neuroma by decreasing myelinated fiber counts and increasing fascicle diameter in the transferred nerves. Conclusions This study demonstrates that 1 segmented muscle having TMR by multiple nerve ingrowth and in turn generate discrete EMG signals. During this process, the previous amputation neuroma undergoes favorable morphologic alteration. Clinical relevance Based on these preclinical results, this technique might be useful in upper extremity amputees to recruit target muscles to have reinnervation to drive myoelectric prostheses and to treat symptomatic neuromas.
Published: 2012
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6. Search for Rare and Forbidden Charm Meson DecaysD0→Vℓ+ℓ−andhhℓℓ

Author: K. O'Shaughnessy, dos Reis Ac, K. C. Peng, A. K. Tripathi, S. M. Yang, N. R. Stanton, Alberto Santoro, A. J. Slaughter, A. Nguyen, P.A. Kasper, S. Yoshida, A. Napier, K. Denisenko, S. B. Bracker, A. Álvarez Fernández, M. Sheaff, S. Amato, D. Yi, D. C. Langs, R. Weiss-Babai, R. A. Burnstein, L. M. Cremaldi, E. Wolin, G. F. Fox, B. Quinn, A.B. d'Oliveira, A. Rafatian, E.M. Aitala, C. James, N. W. Reay, J. Leslie, N. Witchey, S. Takach, G. Hurvits, C. Zhang, S. Watanabe, de Mello Neto, M. V. Purohit, B. Lundberg, R. H. Milburn, H.S. Carvalho, A.K.S. Santha, A.M. Halling, S. Banerjee, Kevin Stenson, J. C. Anjos, J. A. Appel, R. A. Sidwell, J. Magnin, Sokoloff, R. Zaliznyak, D. J. Summers, K. Gounder, Daniel Ashery, T. Carter, A. J. Schwartz, D. A. Sanders, L. Perera, G. Blaylock, G. Herrera, K. Thorne, Simon Kwan, D. Mihalcea, S. Devmal, H. A. Rubin, S. Radeztsky, P. Gagnon, C. L. Darling, R. J. Stefanski, N. K. Copty, J. Solano, J. Wiener, J.J. Reidy, C. Göbel, S. MayTal-Beck, de Miranda Jm, B. T. Meadows, P. R. Burchat, and I. Bediaga
Subjects: Physics, Particle physics, Antiparticle, Muon, Meson, Neutral current, High Energy Physics::Phenomenology, General Physics and Astronomy, Nuclear physics, Pseudoscalar, High Energy Physics::Experiment, Vector meson, Charm (quantum number), Lepton
Abstract: We report results of a search for flavor-changing neutral current (FCNC), lepton flavor, and lepton-number violating decays of the ${D}^{0}$ (and its antiparticle) into three and four bodies. Using data from Fermilab charm hadroproduction experiment E791, we examine modes with two leptons (muons or electrons) and a ${\ensuremath{\rho}}^{0}$, ${\overline{K}}^{*0}$, or $\ensuremath{\varphi}$ vector meson or a nonresonant $\ensuremath{\pi}\ensuremath{\pi}$, $K\ensuremath{\pi}$, or $\mathrm{KK}$ pair of pseudoscalar mesons. No evidence for any of these decays is found. Therefore, we present branching-fraction upper limits at 90% confidence level for the 27 decay modes examined (18 new).
Published: 2001
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7. Study of theDs+→π−π+π+Decay and Measurement off0Masses and Widths

Author: G. F. Fox, D. J. Summers, K. Gounder, J. M. De Miranda, B. T. Meadows, M. D. Sokoloff, J. R. T. de Mello Neto, P.A. Kasper, S. B. Bracker, S. Radeztsky, S. Watanabe, J.J. Reidy, M. Sheaff, R. J. Stefanski, S. Devmal, R. A. Sidwell, S. Takach, B. Lundberg, I. Bediaga, C. Zhang, A. J. Slaughter, J. A. Appel, A. Napier, Daniel Ashery, K. Denisenko, P. Gagnon, A.M. Halling, D. Yi, K. C. Peng, H.S. Carvalho, S. M. Yang, A. Nguyen, A. Massafferri, H. A. Rubin, N. K. Copty, S. MayTal-Beck, R. Zaliznyak, Simon Kwan, S. Yoshida, A. K. Tripathi, D. C. Langs, M. V. Purohit, C. L. Darling, K. O'Shaughnessy, G. Blaylock, A.K.S. Santha, J. Solano, C. James, S. Amato, A.B. d'Oliveira, E.M. Aitala, Alberto Santoro, J. C. Anjos, N. W. Reay, J. Leslie, J. Magnin, D. A. Sanders, J. Wiener, L. Perera, D. Mihalcea, A. C. dos Reis, R. Weiss-Babai, A. Álvarez Fernández, L. M. Cremaldi, K. Thorne, Patricia R. Burchat, E. Wolin, S. Banerjee, N. Witchey, C. Göbel, A. J. Schwartz, R. H. Milburn, R. A. Burnstein, N. R. Stanton, A. Rafatian, G. Hurvits, Kevin Stenson, G. Herrera, T. Carter, and B. Quinn
Subjects: Physics, Crystallography, Particle physics, Pi, General Physics and Astronomy, Dalitz plot
Abstract: From a sample of $848\ifmmode\pm\else\textpm\fi{}44$ ${D}_{s}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{+}$ decays, we find $\ensuremath{\Gamma}({D}_{s}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{+})/\ensuremath{\Gamma}({D}_{s}^{+}\ensuremath{\rightarrow}\ensuremath{\varphi}{\ensuremath{\pi}}^{+})\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.245\ifmmode\pm\else\textpm\fi{}{0.028}_{\ensuremath{-}0.012}^{+0.019}$. Using a Dalitz plot analysis of this three body decay, we find significant contributions from the channels ${\ensuremath{\rho}}^{0}(770){\ensuremath{\pi}}^{+}$, ${\ensuremath{\rho}}^{0}(1450){\ensuremath{\pi}}^{+}$, ${f}_{0}(980){\ensuremath{\pi}}^{+}$, ${f}_{2}(1270){\ensuremath{\pi}}^{+}$, and ${f}_{0}(1370){\ensuremath{\pi}}^{+}$. We also present the values obtained for masses and widths of the resonances ${f}_{0}(980)$ and ${f}_{0}(1370)$.
Published: 2001
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8. Experimental Evidence for a Light and Broad Scalar Resonance inD+→π−π+π+Decay

Author: N. R. Stanton, N. Witchey, D.C. Langs, S. Radeztsky, S. MayTal-Beck, A. Nguyen, Alberto Santoro, Kevin Stenson, J. Magnin, A.K. Tripathi, A.M. Halling, D. J. Summers, K. Gounder, R. H. Milburn, I. Bediaga, C. Zhang, R. A. Burnstein, J. A. Appel, G. F. Fox, S. M. Yang, S. Yoshida, P.A. Kasper, J.J. Reidy, A. Massafferri, A. Rafatian, J. Wiener, R. J. Stefanski, G. Blaylock, A. Napier, H.S. Carvalho, B. Lundberg, de Miranda Jm, K. Denisenko, D. Yi, Sokoloff, N. W. Reay, J. Leslie, G. Hurvits, C. Göbel, S. Takach, S. Watanabe, R. Weiss-Babai, B. T. Meadows, Daniel Ashery, M. Sheaff, C. L. Darling, S. B. Bracker, D. A. Sanders, A. J. Schwartz, Simon Kwan, Sudeshna Banerjee, J. C. Anjos, T. Carter, G. Herrera, P. Gagnon, C. James, R. Zaliznyak, N. K. Copty, S. Amato, B. Quinn, H. A. Rubin, de Mello Neto, J. Solano, D. Mihalcea, A. J. Slaughter, M. V. Purohit, A.K.S. Santha, K. O'Shaughnessy, dos Reis Ac, S. Devmal, L.P. Perera, R. A. Sidwell, Patricia R. Burchat, A.B. d'Oliveira, E.M. Aitala, A. Álvarez Fernández, L. M. Cremaldi, E. Wolin, K. C. Peng, and K. Thorne
Subjects: Physics, Nuclear magnetic resonance, Amplitude, Scalar (mathematics), Analytical chemistry, Pi, General Physics and Astronomy, Dalitz plot, Resonance
Abstract: From a sample of 1172 +/- 61 D(+)-->pi(-)pi(+)pi(+) decays, we find gamma(D(+)-->pi(-)pi(+)pi(+))/gamma(D(+)-->K-pi(+)pi(+)) = 0.0311 +/- 0.0018(+0.0016)(-0.0026). Using a coherent amplitude analysis to fit the Dalitz plot of these decays, we find strong evidence that a scalar resonance of mass 478(+24)(-23) +/- 17 MeV/c(2) and width 324(+42)(-40) +/- 21 MeV/c(2) accounts for approximately half of all decays.
Published: 2001
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9. Asymmetries in the production of Λc+ and Λc− baryons in 500 GeV/c π− nucleon interactions

Author: S. M. Yang, R. A. Burnstein, Kevin Stenson, S. Yoshida, A. Rafatian, C. Zhang, H.S. Carvalho, N. Witchey, M. V. Purohit, A. Nguyen, K. C. Peng, A.B. d'Oliveira, A. Fernandez, D.C. Langs, S. MayTal-Beck, B. Quinn, J. R. T. de Mello Neto, A.K.S. Santha, E.M. Aitala, A. Napier, K. Denisenko, D. Yi, R. Weiss-Babai, G. Hurvits, R. A. Sidwell, D. A. Sanders, R. J. Stefanski, N. K. Copty, A.K. Tripathi, I. Bediaga, G. Blaylock, K. Thorne, J. C. Anjos, A. J. Slaughter, T. Carter, L. M. Cremaldi, E. Wolin, D. Mihalcea, S. B. Bracker, N. R. Stanton, F.R.A. Simão, A. C. dos Reis, J. Magnin, A. J. Schwartz, C. L. Darling, J.J. Reidy, B. Lundberg, B. T. Meadows, R. Zaliznyak, M. Sheaff, M. D. Sokoloff, G. Herrera, P.A. Kasper, Sudeshna Banerjee, S. Devmal, P. R. Burchat, D. J. Summers, R. H. Milburn, L.P. Perera, K. Gounder, K. O'Shaughnessy, J. M. De Miranda, Alberto Santoro, J. Solano, Daniel Ashery, S. Amato, G. F. Fox, H. A. Rubin, S. Takach, S. Radeztsky, S. Watanabe, A.M. Halling, Simon Kwan, P. Gagnon, C. James, J. A. Appel, N. W. Reay, J. Leslie, J. Wiener, and C. Göbel
Subjects: Physics, Nuclear and High Energy Physics, media_common.quotation_subject, Lambda, Asymmetry, Baryon, Nuclear physics, symbols.namesake, Pi, symbols, Feynman diagram, Production (computer science), Fermilab, Nucleon, media_common
Abstract: We present a measurement of asymmetries in the production of Λ c + and Λ c − baryons in 500 GeV/ c π − -nucleon interactions from the E791 experiment at Fermilab. The asymmetries were measured as functions of Feynman x ( x F ) and transverse momentum squared ( p T 2 ) using a sample of 1 819±62 Λ c 's observed in the decay channel Λ c + → pK − π + . We observe more Λ c + than Λ c − baryons, with an asymmetry of (12.7±3.4±1.3)% independent of x F and p T 2 in our kinematical range (−0.1⩽ x F ⩽0.6 and 0.0⩽ p T 2 ⩽8.0 (GeV/ c ) 2 ). This Λ c asymmetry measurement is the first with data in both the positive and negative x F regions.
Published: 2000
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10. Asymmetries in the production of Λ0, Ξ−, and hyperons in 500 GeV/c π−–nucleon interactions

Author: J. A. Appel, Michael Sokoloff, K. O'Shaughnessy, A. Napier, P.A. Kasper, A.B. d'Oliveira, E.M. Aitala, K. Denisenko, D. Yi, R. Weiss-Babai, C. James, R. Zaliznyak, S. Devmal, B. Quinn, G. Blaylock, A.J. Slaughter, A. J. Schwartz, C. L. Darling, S. Takach, A. Rafatian, L.P. Perera, K. C. Peng, S. B. Bracker, N. Witchey, J. R. T. de Mello Neto, J. Wiener, J.J. Reidy, G. Hurvits, Milind Purohit, I. Bediaga, Don Summers, A. Fernandez, D.C. Langs, R. A. Sidwell, B. Lundberg, C. Göbel, C. Zhang, A.K.S. Santha, L. M. Cremaldi, D. Ashery, E. Wolin, A. Nguyen, S. MayTal-Beck, H. A. Rubin, Kevin Stenson, M. Sheaff, N. R. Stanton, J. C. Anjos, T. Carter, A.K. Tripathi, R. H. Milburn, Alberto Santoro, F.R.A. Simão, N. K. Copty, Brian Meadows, Patricia R. Burchat, A. C. dos Reis, K. Thorne, J. Solano, G. Herrera, S. Yoshida, H.S. Carvalho, N. W. Reay, J. Leslie, Simon Kwan, David Sanders, P. Gagnon, K. Gounder, J. M. De Miranda, S. Radeztsky, A.M. Halling, J. Magnin, R.A. Burnstein, Sudeshna Banerjee, S. Amato, G. F. Fox, and S. Watanabe
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, media_common.quotation_subject, Astrophysics::Cosmology and Extragalactic Astrophysics, Asymmetry, Nuclear physics, Baryon, symbols.namesake, Transverse momentum, symbols, Feynman diagram, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, Nucleon, media_common
Abstract: We present a measurement of asymmetries in the production of Λc+ and Λc− baryons in 500 GeV/c π−-nucleon interactions from the E791 experiment at Fermilab. The asymmetries were measured as functions of Feynman x (xF) and transverse momentum squared (pT2) using a sample of 1 819±62 Λc's observed in the decay channel Λc+→pK−π+. We observe more Λc+ than Λc− baryons, with an asymmetry of (12.7±3.4±1.3)% independent of xF and pT2 in our kinematical range (−0.1⩽xF⩽0.6 and 0.0⩽pT2⩽8.0 (GeV/c)2). This Λc asymmetry measurement is the first with data in both the positive and negative xF regions.
Published: 2000
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11. Correlations between D and $${\overline D}$$ mesons produced in 500 GeV/cπ−-nucleon interactions

Author: D. Ashery, Patricia R. Burchat, S. Radeztsky, K. O'Shaughnessy, J. A. Appel, J.J. Reidy, H.S. Carvalho, A.M. Halling, K. Gounder, J. M. De Miranda, B. Lundberg, A.B. d'Oliveira, David Sanders, C. Göbel, E.M. Aitala, K. C. Peng, Kevin Stenson, G. Blaylock, Don Summers, C.J. Solano Salinas, L.P. Perera, R.A. Burnstein, K. Thorne, S. Takach, Milind Purohit, I. Bediaga, Sudeshna Banerjee, S. MayTal-Beck, L. M. Cremaldi, E. Wolin, J. R. T. de Mello Neto, A.K.S. Santha, A. Napier, K. Denisenko, S. Amato, D. Yi, A.J. Slaughter, A.K. Tripathi, R. Weiss-Babai, G. F. Fox, J. C. Anjos, H. A. Rubin, D. Mihalcea, R. A. Sidwell, S. Watanabe, A. Nguyen, B. Quinn, S. M. Yang, C. Zhang, A. C. dos Reis, R. J. Stefanski, S. Yoshida, T. Carter, N. Witchey, A. Fernandez, D.C. Langs, M. Sheaff, Sokoloff, N. K. Copty, N. R. Stanton, C. James, Stephen B. Bracker, J. Wiener, R. Zaliznyak, P.A. Kasper, Simon Kwan, P. Gagnon, N. W. Reay, J. Leslie, C. L. Darling, A. Rafatian, G. Hurvits, Alberto Santoro, Brian Meadows, R. H. Milburn, A. J. Schwartz, and G. Herrera
Subjects: Physics, Quantum chromodynamics, Particle physics, Meson, High Energy Physics::Phenomenology, Order (ring theory), Nuclear physics, D meson, High Energy Physics::Experiment, Production (computer science), Charm (quantum number), Nuclear Experiment, Nucleon, Event generator
Abstract: We present a study of correlations between D and $${\overline D}$$ mesons produced in 500 GeV/cπ−-nucleon interactions, based on data from experiment E791 at Fermilab. We have fully reconstructed 791 ± 44 charm meson pairs to study correlations between the transverse and longitudinal momenta of the two D mesons and the relative production rates for different types of D meson pairs. We see slight correlations between the longitudinal momenta of the D and the $${\bar D}$$ , and significant correlations between the azimuthal angle of the D and the $${\bar D}$$ . The experimental distributions are compared to a next-to-leading-order QCD calculation and to predictions of the PYTHIA/JETSET Monte Carlo event generator. We observe less correlation between transverse momenta and different correlations between longitudinal momenta than these models predict for the default values of the model parameters. Better agreement between data and theory might be achieved by tuning the model parameters or by adding higher order perturbative terms, thus contributing to a better understanding of charm production. The relative production rates for the four sets of charm pairs, $$D^0{{\overline D}^0}, D^0 D^{-}, D^+{{\overline D}^0}, D^+ D^{-}$$ as calculated in the PYTHIA/JETSET event generator with the default parameters, agree with data as far as the relative ordering, but predict too many $$D^+ {{\overline D}^0}$$ pairs and too few $$D^+ D^{-}$$ pairs.
Published: 2000
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12. Multidimensional resonance analysis of Λc+→pK−π+

Author: E.M. Aitala, S. Amato, J.C. Anjos, J.A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S.B. Bracker, P.R. Burchat, R.A. Burnstein, T. Carter, H.S. Carvalho, N.K. Copty, L.M. Cremaldi, C. Darling, K. Denisenko, S. Devmal, A. Fernandez, G.F. Fox, P. Gagnon, C. Gobel, K. Gounder, A.M. Halling, G. Herrera, G. Hurvits, C. James, P.A. Kasper, S. Kwan, D.C. Langs, J. Leslie, B. Lundberg, J. Magnin, S. MayTal-Beck, B. Meadows, J.R.T. de Mello Neto, D. Mihalcea, R.H. Milburn, J.M. de Miranda, A. Napier, A. Nguyen, A.B. d'Oliveira, K. O'Shaughnessy, K.C. Peng, L.P. Perera, M.V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N.W. Reay, J.J. Reidy, A.C. dos Reis, H.A. Rubin, D.A. Sanders, A.K.S. Santha, A.F.S. Santoro, A.J. Schwartz, M. Sheaff, R.A. Sidwell, A.J. Slaughter, M.D. Sokoloff, J. Solano, N.R. Stanton, R.J. Stefanski, K. Stenson, D.J. Summers, S. Takach, K. Thorne, A.K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, S.M. Yang, D. Yi, S. Yoshida, R. Zaliznyak, and C. Zhang
Subjects: Baryon, Physics, Nuclear and High Energy Physics, Particle physics, Amplitude, Resonance analysis, Pi, Resonance, Lambda, Bar (unit)
Abstract: We present the results of a five-dimensional resonant amplitude analysis of the $\Lambda_c^+{\to}pK^{-}\pi^{+}$ system based on $946\pm 38$ reconstructed decays. These data were produced in 500 GeV/$c$ $\pi^-$-N interactions by Fermilab experiment E791. We report measurements of the amplitudes for $\Lambda_c^+$ decay into nonresonant $pK^-\pi^+$ and to $p\bar{K}^{*0}(890)$, $\Delta^{++}(1232)K^-$, and $\Lambda(1520)\pi^+$ and we comment on other possible resonant enhancements. This is the first complete amplitude analysis of the $\Lambda_c^{+}{\to}pK^{-}\pi^{+}$ system. We find that $(54.8\pm5.5\pm3.5)$% of the decays are nonresonant, $(19.5\pm2.6\pm1.8)$% of the decays are via the $\bar{K}^{*0}$ resonance, $(18.0\pm2.9\pm2.9)$% of the decays are via the $\Delta^{++}$ resonance, and $(7.7\pm1.8\pm1.1)$% of the decays are via the $\Lambda(1520)$ resonance. We find evidence for an increasingly negative polarization of the $\Lambda_c^+$ baryons as a function of $p_T^2$, in agreement with a recent model\cite{dha} and with a related measurement\cite{jez}.
Published: 2000
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13. Measurement of the form-factor ratios for D+s→φℓ+νℓ

Author: E.M. Aitala, S. Amato, J.C. Anjos, J.A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S.B. Bracker, P.R. Burchat, R.A. Burnstein, T. Carter, H.S. Carvalho, N.K. Copty, L.M. Cremaldi, C. Darling, K. Denisenko, A. Fernandez, G.F. Fox, P. Gagnon, C. Gobel, K. Gounder, A.M. Halling, G. Herrera, G. Hurvits, C. James, P.A. Kasper, S. Kwan, D.C. Langs, J. Leslie, B. Lundberg, S. MayTal-Beck, B. Meadows, J.R.T. de Mello Neto, D. Mihalcea, R.H. Milburn, J.M. de Miranda, A. Napier, A. Nguyen, A.B. d'Oliveira, K. O'Shaughnessy, K.C. Peng, L.P. Perera, M.V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N.W. Reay, J.J. Reidy, A.C. dos Reis, H.A. Rubin, D.A. Sanders, A.K.S. Santha, A.F.S. Santoro, A.J. Schwartz, M. Sheaff, R.A. Sidwell, A.J. Slaughter, M.D. Sokoloff, J. Solano, N.R. Stanton, R.J. Stefanski, K. Stenson, D.J. Summers, S. Takach, K. Thorne, A.K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, S.M. Yang, D. Yi, S. Yoshida, R. Zaliznyak, and C. Zhang
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Electron channel, Form factor (quantum field theory), Lepton
Abstract: We have measured the form factor ratios r_V = V(0)/A_1(0) and r_2 = A_2(0)/A_1(0) for the decay D_s^+ -> phi ell^+ nu_ell, phi -> K^+ K^-, using data from charm hadroproduction experiment E791 at Fermilab. Results are based on 144 signal and 22 background events in the electron channel and 127 signal and 34 background events in the muon channel. We combine the measurements from both lepton channels to obtain r_V = 2.27 +- 0.35 +- 0.22 and r_2 = 1.57 +- 0.25 +- 0.19.
Published: 1999
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14. Search for the pentaquark via the decay

Author: R. Zaliznyak, Sudeshna Banerjee, A. Napier, K. Denisenko, T. Carter, J.J. Reidy, D. Yi, J. A. Appel, R. Weiss-Babai, S. Takach, L.P. Perera, A. J. Schwartz, S. Amato, S. Radeztsky, Simon Kwan, G. F. Fox, P.A. Kasper, N. Witchey, S. M. Yang, L. M. Cremaldi, I. Bediaga, E. Wolin, S. MayTal-Beck, A. Fernandez, S. Yoshida, D.C. Langs, S. Gerzon, A.K. Tripathi, G. Herrera, J. Lichtenstadt, S. Watanabe, D. J. Summers, K. Gounder, P. Gagnon, J. M. De Miranda, A. J. Slaughter, B. T. Meadows, M. D. Sokoloff, P. R. Burchat, K. O'Shaughnessy, Kevin Stenson, R. A. Sidwell, R. J. Stefanski, N. W. Reay, J. Leslie, S. B. Bracker, Alberto Santoro, B. Quinn, M. V. Purohit, A.M. Halling, J. C. Anjos, H.S. Carvalho, D. Mihalcea, A.K.S. Santha, J. R. T. de Mello Neto, E.M. Aitala, K. C. Peng, Daniel Ashery, R. A. Burnstein, B. Lundberg, A. C. dos Reis, A. Rafatian, G. Hurvits, H. A. Rubin, N. K. Copty, J. Solano, J. Wiener, C. Göbel, C. Zhang, C. James, M. Sheaff, A. Nguyen, D. A. Sanders, K. Thorne, G. Blaylock, R. H. Milburn, N. R. Stanton, A. B. D'Oliveira, and C. L. Darling
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Cross section (physics), Particle physics, Branching fraction, Fermilab, Beam (structure), Pentaquark
Abstract: We have searched for evidence of the production and decay of a neutral bound-state pentaquark, one of a predicted doublet of states: P 0 c s =| c suud〉 and P − c s =| c sddu〉 . Specifically, we have searched for the decay P 0 c s →K ∗0 K − p in data from Fermilab experiment E791, in which a 500 GeV/c π− beam interacted with nuclear targets. We find mass-dependent upper limits at the 90% confidence level for the ratio of cross section times branching fraction of this decay relative to that for the decay D s − →K ∗0 K − . The upper limits vary between 0.016 and 0.036 for M(P 0 c s ) between 2.75 and 2.91 GeV/c2, assuming a pentaquark lifetime of 0.4 ps.
Published: 1999
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15. Measurement of the Ds lifetime

Author: E.M. Aitala, S. Amato, J.C. Anjos, J.A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S.B. Bracker, P.R. Burchat, R.A. Burnstein, T. Carter, H.S. Carvalho, N.K. Copty, L.M. Cremaldi, C. Darling, K. Denisenko, A. Fernandez, G.F. Fox, P. Gagnon, C. Gobel, K. Gounder, A.M. Halling, G. Herrera, G. Hurvits, C. James, P.A. Kasper, S. Kwan, D.C. Langs, J. Leslie, B. Lundberg, S. MayTal-Beck, B. Meadows, J.R.T. de Mello Neto, D. Mihalcea, R.H. Milburn, J.M. de Miranda, A. Napier, A. Nguyen, A.B. d'Oliveira, K. O'Shaughnessy, K.C. Peng, L.P. Perera, M.V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N.W. Reay, J.J. Reidy, A.C. dos Reis, H.A. Rubin, D.A. Sanders, A.K.S. Santha, A.F.S. Santoro, A.J. Schwartz, M. Sheaff, R.A. Sidwell, A.J. Slaughter, M.D. Sokoloff, J. Solano, N.R. Stanton, R.J. Stefanski, K. Stenson, D.J. Summers, S. Takach, K. Thorne, A.K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, S.M. Yang, D. Yi, S. Yoshida, R. Zaliznyak, and C. Zhang
Subjects: Physics, High Energy Physics - Experiment (hep-ex), Nuclear and High Energy Physics, Particle physics, Meson, Maximum likelihood, FOS: Physical sciences, Charm (quantum number), Fermilab, Measure (mathematics), Standard deviation, High Energy Physics - Experiment
Abstract: We report the results of a precise measurement of the Ds meson lifetime based on 1662 +/- 56 fully reconstructed Ds -> phi pi decays, from the charm hadroproduction experiment E791 at Fermilab. Using an unbinned maximum likelihood fit, we measure the Ds lifetime to be 0.518 +/- 0.014 +/- 0.007 ps. The ratio of the measured Ds lifetime to the world average D0 lifetime is 1.25 +/- 0.04. This result differs from unity by six standard deviations, indicating significantly different lifetimes for the Ds and the D0., 12 pages, 3 figures, 2 table. LaTeX
Published: 1999
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16. Measurement of the form-factor ratios for D→ℓν

Author: N. R. Stanton, S. Takach, A. Napier, K. Denisenko, D. Yi, R. Weiss-Babai, B. Lundberg, S. B. Bracker, S. M. Yang, S. Radeztsky, G. Blaylock, R. Zaliznyak, K. C. Peng, S. Yoshida, J.J. Reidy, Simon Kwan, J. R. T. de Mello Neto, R. H. Milburn, A.B. d'Oliveira, E.M. Aitala, P.A. Kasper, C. Zhang, D. C. Langs, D. J. Summers, K. Gounder, B. T. Meadows, A. Álvarez Fernández, J. M. De Miranda, Kevin Stenson, M. D. Sokoloff, L. M. Cremaldi, E. Wolin, S. MayTal-Beck, S. Amato, R. J. Stefanski, Pauline Gagnon, N. K. Copty, A. J. Slaughter, T. Carter, A. Nguyen, J. Wiener, R. A. Sidwell, S. Banerjee, C. Göbel, D. Mihalcea, C. James, A.M. Halling, J. A. Appel, A. C. dos Reis, M. V. Purohit, J. Solano, G. F. Fox, B. Quinn, D. A. Sanders, Daniel Ashery, I. Bediaga, A.K.S. Santha, S. Watanabe, N. W. Reay, J. Leslie, L. Perera, N. Witchey, C. L. Darling, K. Thorne, Patricia R. Burchat, R. A. Burnstein, A. Rafatian, G. Hurvits, K. O'Shaughnessy, Alberto Santoro, M. Sheaff, H. A. Rubin, H.S. Carvalho, J. C. Anjos, A. J. Schwartz, G. Herrera, and A. K. Tripathi
Subjects: Physics, Nuclear and High Energy Physics, chemistry, Analytical chemistry, chemistry.chemical_element, Platinum, Carbon
Published: 1998
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17. Search for the Pentaquark via thePcs¯0→φπpDecay

Author: S. Yoshida, S. Banerjee, A. K. Tripathi, A. J. Slaughter, S. MayTal-Beck, A. Napier, J. C. Anjos, D. Yi, R. Weiss-Babai, S. Gerzon, N. R. Stanton, J. R. T. de Mello Neto, A. Nguyen, Daniel Ashery, C. James, B. Lundberg, J. Leslie, E.M. Aitala, B. T. Meadows, D. C. Langs, M. Sheaff, M. D. Sokoloff, P. R. Burchat, N. W. Reay, S. B. Bracker, J. A. Appel, P. Gagnon, S. Amato, H. A. Rubin, K. O'Shaughnessy, J. Lichtenstadt, I. Bediaga, H.S. Carvalho, G. Blaylock, R. H. Milburn, C. Zhang, Simon Kwan, R. Zaliznyak, T. Carter, A. B. d'Oliveira, J. Wiener, P.A. Kasper, N. K. Copty, J. J. Reidy, A. J. Schwartz, K. Denisenko, S. Takach, C. Göbel, A. K. S. Santha, M. V. Purohit, R. A. Sidwell, S. Watanabe, G. Herrera, S. Radeztsky, A. C. dos Reis, C. L. Darling, D. J. Summers, K. Gounder, J. M. De Miranda, A.M. Halling, L. Perera, K. Thorne, B. Quinn, Alberto Santoro, R. A. Burnstein, A. Rafatian, G. Hurvits, Kevin Stenson, N. Witchey, K. C. Peng, A. Álvarez Fernández, L. M. Cremaldi, and E. Wolin
Subjects: Physics, Particle decay, Particle physics, Pion, Meson, Branching fraction, High Energy Physics::Phenomenology, Hadron, General Physics and Astronomy, High Energy Physics::Experiment, Energy (signal processing), Pentaquark, Bar (unit)
Abstract: We report results of the first search for the pentaquark P_{{c bar}s} which is predicted to be a doublet of states: P^0_{{c bar}s}=({c bar} s u u d) and P^-_{{c bar}s}=({c bar} s d d u). A search was made for the decay P^0_{{c bar}s} --> phi,pi,p in data from Fermilab experiment E791, in which 500 GeV/c pi^- beam interacted with nuclear targets. We present upper limits at 90% confidence level for the ratio of cross section times branching fraction of this decay to that for the decay D_s --> phi,pi. The upper limits are 0.031 and 0.063 for M(P^0_{{c bar}s}) = 2.75 and 2.86 GeV/c^2, respectively, assuming a P^0_{{c bar}s} lifetime of 0.4 ps.
Published: 1998
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18. Branching fractions for D0→K+K− and D0→π+π−, and a search for CP violation in D0 decays

Author: N. Witchey, Simon Kwan, A. Fernandez, A. Nguyen, S. B. Bracker, Don Summers, P.A. Kasper, P. Gagnon, R. Zaliznyak, J. A. Appel, A. K. Tripathi, J. R. T. de Mello Neto, L.P. Perera, J.J. Reidy, A.J. Schwartz, N.J. Copty, S. Radeztsky, C. Zhang, Kevin Stenson, K. C. Peng, D. C. Langs, D. Ashery, A. Napier, R. A. Sidwell, Michael Sokoloff, K. O'Shaughnessy, K. Denisenko, A.M. Halling, S. MayTal-Beck, D. Yi, Alberto Santoro, S. Takach, A.B. d'Oliveira, R. Weiss-Babai, E.M. Aitala, T. Carter, Brian Meadows, C. L. Darling, M. Sheaff, G. Blaylock, Patricia R. Burchat, N. W. Reay, J. Leslie, A.K.S. Santha, K. Thorne, L. M. Cremaldi, E. Wolin, A. Rafatian, R.A. Burnstein, J. C. Anjos, Sudeshna Banerjee, David Sanders, G. Hurvits, J. Solano, S. Amato, K. Gounder, G. F. Fox, J. M. De Miranda, Milind Purohit, I. Bediaga, R. H. Milburn, S. Watanabe, B. Quinn, H. A. Rubin, J. Wiener, B. Lundberg, C. Göbel, C. James, G. Herrera, N. R. Stanton, H.S. Carvalho, A.J. Slaughter, S. Yoshida, and A. C. dos Reis
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, media_common.quotation_subject, CP violation, Fermilab, Charm (quantum number), Branching (polymer chemistry), Asymmetry, High Energy Physics - Experiment, media_common
Abstract: Using the large hadroproduced charm sample collected in experiment E791 at Fermilab, we have measured ratios of branching fractions for the two-body singly-Cabibbo-suppressed charged decays of the D0: (D0 -> KK)/(D0 -> Kpi) = 0.109 +- 0.003 +- 0.003, (D0 -> pipi)/(D0 -> Kpi) = 0.040 +- 0.002 +- 0.003, and (D0 -> KK)/(D0 -> pipi) = 2.75 +- 0.15 +- 0.16. We have looked for differences in the decay rates of D0 and D0bar to the CP eigenstates K+K- and pi+pi-, and have measured the CP asymmetry parameters A_CP(K+K-) = -0.010 +- 0.049 +- 0.012 and A_CP(pi+pi-) = -0.049 +- 0.078 +- 0.030, both consistent with zero., Comment: 10 Postscript pages, including 2 figures. Submitted to Phys. Lett. B
Published: 1998
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19. Study of the decay D0→K−K+π−π+

Author: Daniel Ashery, L. M. Cremaldi, E. Wolin, H. A. Rubin, M. V. Purohit, A.K.S. Santha, M. Sheaff, A.B. d'Oliveira, K. O'Shaughnessy, E.M. Aitala, A. J. Slaughter, J. R. T. de Mello Neto, N. K. Copty, I. Bediaga, P.A. Kasper, A. Napier, S. MayTal-Beck, C. James, K. C. Peng, N. W. Reay, J. Leslie, K. Denisenko, D. Yi, C. Zhang, D. J. Summers, K. Gounder, A.M. Halling, L.P. Perera, Kevin Stenson, R. Weiss-Babai, D. C. Langs, J. M. De Miranda, S. Yoshida, B. Quinn, B. T. Meadows, J. A. Appel, J. Solano, R. A. Sidwell, M. D. Sokoloff, S. B. Bracker, P. R. Burchat, G. F. Fox, H.S. Carvalho, N. Witchey, R. H. Milburn, A. Fernandez, R. Zaliznyak, A. C. dos Reis, A.J. Schwartz, B. Lundberg, Simon Kwan, J.J. Reidy, T. Carter, S. Watanabe, P. Gagnon, J. Wiener, A. K. Tripathi, C. Göbel, Sudeshna Banerjee, C. L. Darling, G. Herrera, S. Amato, S. Radeztsky, S. Takach, Alberto Santoro, R. A. Burnstein, A. Rafatian, G. Hurvits, D. A. Sanders, K. Thorne, A. Nguyen, N. R. Stanton, J. C. Anjos, and G. Blaylock
Subjects: Physics, Nuclear and High Energy Physics, Amplitude, Branching fraction, Analytical chemistry, Fermilab, Measure (mathematics)
Abstract: Using data from Fermilab fixed-target experiment E791, we measure the branching ratio for D 0 → K − K + π − π + and its resonant components. We find Γ(D 0 →K − K + π − π + ) Γ(D 0 →K − π + π − π + ) =(3.13±0.37±0.36) %. A coherent amplitude analysis is used to estimate the resonant components. We measure the ratios Γ(D 0 →f) Γ(D 0 →K − π + π − π + ) to be (2.0±0.9±0.8)% for f = φρ 0 , (0.9±0.4±0.5)% for f = φπ + π − , f=K ∗0 (892) K ∗0 (892) , and f= K ∗0 (892)K + π − or K ∗0 (892)K − π + .
Published: 1998
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20. Measurement of the Form-Factor Ratios forD+→K¯*0e+νe

Author: N. R. Stanton, N. K. Copty, C. Zhang, P.A. Kasper, D. Mihalcea, Kevin Stenson, A. K. Tripathi, A. C. dos Reis, S. MayTal-Beck, J. Solano, A. J. Slaughter, R. H. Milburn, B. T. Meadows, M. D. Sokoloff, G. P. Gagnon, J. R. T. de Mello Neto, P. R. Burchat, Daniel Ashery, J. Wiener, A. Napier, K. Denisenko, N. W. Reay, J. Leslie, S. Yoshida, K. C. Peng, B. Quinn, D. Yi, D. C. Langs, I. Bediaga, H. A. Rubin, R. Weiss-Babai, D. J. Summers, C. James, K. Gounder, N. Witchey, Simon Kwan, M. V. Purohit, J. M. De Miranda, J.J. Reidy, K. O'Shaughnessy, A.K.S. Santha, S. Banerjee, H.S. Carvalho, Alberto Santoro, J. C. Anjos, A. Álvarez Fernández, B. Lundberg, R. A. Burnstein, L. M. Cremaldi, M. Sheaff, J. A. Appel, E. Wolin, D. A. Sanders, G. Blaylock, A. Rafatian, G. Hurvits, T. Carter, C. L. Darling, R. A. Sidwell, L. Perera, A. J. Schwartz, S. B. Bracker, A.B. d'Oliveira, E.M. Aitala, K. Thorne, S. Takach, S. Radeztsky, A. Nguyen, G. Herrera, S. Amato, A.M. Halling, G. F. Fox, S. Watanabe, and R. Zaliznyak
Subjects: Physics, Particle physics, General Physics and Astronomy, Electron neutrino
Abstract: We present a measurement of the form-factor ratios r_V=V(0)/A_1(0) and r_2=A_2(0)/A_1(0) for the decay D^+ -> \overline K^{*0} e^+ \nu_e. The measurement is based on a signal of approximately 3000 $D^+ -> \overline K^{*0} e^+ \nu_e, \overline K^{*0} -> K^-\pi^+$ decays reconstructed in data from charm hadroproduction experiment E791 at Fermilab. The results are r_V = 1.84 +- 0.11 +- 0.08 and r_2 = 0.71 +- 0.08 +- 0.09.
Published: 1998
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21. Search forD0−D0mixing and doubly-Cabibbo-suppressed decays of theD0in hadronic final states

Author: A. Nguyen, L.P. Perera, B. Lundberg, Simon Kwan, P. Gagnon, D. C. Langs, A. Napier, D. Yi, R. Weiss-Babai, Daniel Ashery, C. L. Darling, Milind Purohit, I. Bediaga, C. Zhang, M. Sheaff, A.M. Halling, A.K.S. Santha, A.B. d'Oliveira, E.M. Aitala, Alberto Santoro, H. A. Rubin, N. W. Reay, J. Leslie, K. C. Peng, N. Witchey, N. K. Copty, S. Takach, T. Carter, S. Yoshida, R. Zaliznyak, R. H. Milburn, K. O'Shaughnessy, B. T. Meadows, A. J. Schwartz, K. Thorne, J. A. Appel, A. Álvarez Fernández, M. D. Sokoloff, P. R. Burchat, P.A. Kasper, D. J. Summers, J. C. Anjos, G. Herrera, K. Gounder, J. M. De Miranda, S. B. Bracker, L. M. Cremaldi, E. Wolin, R. A. Sidwell, S. Watanabe, H.S. Carvalho, B. Quinn, R. A. Burnstein, Sudeshna Banerjee, C. James, A. J. Slaughter, A. Rafatian, S. Radeztsky, G. Hurvits, S. Amato, J. R. T. de Mello Neto, Kevin Stenson, A. C. dos Reis, J. Wiener, C. Göbel, J.J. Reidy, S. MayTal-Beck, N. R. Stanton, G. Blaylock, and A. K. Tripathi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Pion, Hadron, Charge (physics), Sensitivity (control systems), Mixing (physics)
Abstract: We present results of a search for ${D}^{0}\ensuremath{-}{D}^{0}$ mixing and doubly-Cabibbo-suppressed decays of the ${D}^{0}$ in Fermilab experiment E791, a fixed-target charm hadroproduction experiment. We look for evidence of mixing in the decay chain ${D}^{*}\ensuremath{\rightarrow}\ensuremath{\pi}\stackrel{\ensuremath{\rightarrow}}{D}\ensuremath{\pi}(K\ensuremath{\pi}$ or $K\ensuremath{\pi}\ensuremath{\pi}\ensuremath{\pi})$. If the charge of the pion from the ${D}^{*}$ decay is the same as the charge of the kaon from the $D$ decay (a ``wrong-sign'' event), mixing may have occurred. Mixing can be distinguished from other sources of wrong-sign events (such as doubly-Cabibbo-suppressed decays) by analyzing the distribution of decay times. We see no evidence of mixing. Allowing for $\mathrm{CP}$ violation in the interference between DCS and mixing amplitudes our fitted ratio for mixed to unmixed decay rates is ${r}_{\mathrm{mix}}{=(0.39}_{\ensuremath{-}0.32}^{+0.36}\ifmmode\pm\else\textpm\fi{}0.16)%$. This corresponds to a 90% C.L. upper limit of ${r}_{\mathrm{mix}}l0.85%$. The sensitivity of this result is comparable to that of previous measurements, but the assumptions made in fitting the data are notably more general. We present results from many fits to our data under various assumptions. If we assume ${r}_{\mathrm{mix}}=0$, we find a two-sigma wrong-sign enhancement in the $K\ensuremath{\pi}$ mode which we ascribe to doubly Cabibbo-suppressed decays. The ratios of doubly Cabibbo-suppressed decays to Cabibbo-favored decays are ${r}_{\mathrm{dcs}}(K\ensuremath{\pi}{)=(0.68}_{\ensuremath{-}0.33}^{+0.34}\ifmmode\pm\else\textpm\fi{}0.07)%$ and ${r}_{\mathrm{dcs}}(K\ensuremath{\pi}\ensuremath{\pi}\ensuremath{\pi}{)=(0.25}_{\ensuremath{-}0.34}^{+0.36}\ifmmode\pm\else\textpm\fi{}0.03)%$.
Published: 1998
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22. Asymmetries between the production of D− and D+ mesons from 500 GeV/c π− nucleon interaction as functions of x and p2

Author: D. C. Langs, A. Nguyen, J. R. T. de Mello Neto, S. Takach, B. T. Meadows, M. D. Sokoloff, P. R. Burchat, K. C. Peng, I. Bediaga, R. Zaliznyak, S. MayTal-Beck, Simon Kwan, G. Blaylock, N. Witchey, K. O'Shaughnessy, A. Fernandez, L. M. Cremaldi, E. Wolin, N. R. Stanton, S. Radeztsky, S. Yoshida, J. Wiener, R. H. Milburn, E.M. Aitala, P. Gagnon, A. Napier, K. Denisenko, Sudeshna Banerjee, S. B. Bracker, C. Göbel, C. Zhang, D. J. Summers, D. Yi, M. V. Purohit, K. Gounder, J. A. Appel, J. M. De Miranda, J.J. Reidy, N. K. Copty, R. Weiss-Babai, A.J. Schwartz, S. Amato, L.P. Perera, A.K.S. Santha, B. Lundberg, N. W. Reay, J. Leslie, C. L. Darling, A.B. d'Oliveira, A.M. Halling, Kevin Stenson, B. Quinn, Daniel Ashery, K. Thorne, S. Watanabe, A. J. Slaughter, H. A. Rubin, D. Mihalcea, C. James, A. C. dos Reis, R. A. Sidwell, Alberto Santoro, A. K. Tripathi, R. A. Burnstein, A. Rafatian, G. Hurvits, M. Sheaff, H.S. Carvalho, G. Herrera, J. C. Anjos, P.A. Kasper, and T. Carter
Subjects: Physics, Nuclear and High Energy Physics, Meson, High Energy Physics::Lattice, media_common.quotation_subject, Nuclear Theory, High Energy Physics::Phenomenology, Asymmetry, Charm quark, Nuclear physics, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, Nucleon, media_common
Abstract: We present measurements of the production of Ds− mesons relative to Ds+ mesons as functions of xF and of pt2 for a sample of 2445 Ds decays to φπ. The Ds mesons were produced in Fermilab experiment E791 with 500 GeV/c π− mesons incident on one platinum and four carbon foil targets. The acceptance-corrected integrated asymmetry in the xF range −0.1 to 0.5 for Ds± mesons is 0.032 ± 0.022 ± 0.022, consistent with no net asymmetry. We compare the results as functions of xF and pt2 to predictions and to the large production asymmetry observed for D± mesons in the same experiment. These comparisons support the hypothesis that production asymmetries come from the fragmentation process and not from the charm quark production itself.
Published: 1997
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23. The doubly Cabibbo-suppressed decay D+ → K+ π− π+

Author: S. Yoshida, N. Witchey, A. Fernandez, L. M. Cremaldi, E. Wolin, B. Quinn, L.P. Perera, P.A. Kasper, D. C. Langs, S. B. Bracker, S. Takach, Alberto Santoro, K. O'Shaughnessy, N. K. Copty, R. A. Sidwell, Kevin Stenson, A. Nguyen, S. May Tal-Beck, R. A. Burnstein, A. Napier, D. J. Summers, K. Gounder, K. Denisenko, J. A. Appel, S. Watanabe, J. M. De Miranda, A. Rafatian, J.J. Reidy, K. C. Peng, D. Yi, A.J. Schwartz, M. V. Purohit, R. H. Milburn, R. Weiss-Babai, B. Lundberg, G. Hurvits, I. Bediaga, A.M. Halling, S. Radeztsky, A. C. dos Reis, A.K.S. Santha, K. Thorne, Daniel Ashery, N. R. Stanton, T. Carter, Simon Kwan, A.B. d'Oliveira, C. L. Darling, E.M. Aitala, Sudeshna Banerjee, H. A. Rubin, G. Herrera, P. Gagnon, A. J. Slaughter, B. T. Meadows, N. W. Reay, J. Leslie, M. D. Sokoloff, P. R. Burchat, S. Amato, J. R. T. de Mello Neto, G. Blaylock, R. Zaliznyak, H.S. Carvalho, J. C. Anjos, J. Wiener, C. James, C. Zhang, A. K. Tripathi, and M. Sheaff
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Branching fraction, Analytical chemistry, Dalitz plot, Fermilab
Abstract: We report the observation of the doubly Cabibbo-suppressed decay D + → K + π − π + in data from Fermilab charm hadroproduction experiment E791. With a signal of 59 ± 13 events we measured the ratio of the branching fraction for this mode to that of the Cabibbo-favored decay D + → K − π + π + to be B (D + → K + π − π + ) / B ( D + → K − π + π + ) = (7.7 ± 1.7 ± 0.8) × 10 −3 . A Dalitz plot analysis was performed to search for resonant structures.
Published: 1997
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24. Observation of D - π production correlations in 500 GeV π− - N interactions

Author: E.M. Aitala, S. Amato, J.C. Anjos, J.A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S.B. Bracker, P.R. Burchat, R.A. Burnstein, T. Carter, H.S. Carvalho, N.K. Copty, I. Costa, L.M. Cremaldi, C. Darling, K. Denisenko, A. Fernandez, P. Gagnon, S. Gerzon, K. Gounder, A.M. Halling, G. Herrera, G. Hurvits, C. James, P.A. Kasper, S. Kwan, D.C. Langs, J. Leslie, B. Lundberg, S. MayTal-Beck, B.T. Meadows, J.R.T. de Mello Neto, R.H. Milburn, J.M. de Miranda, A. Napier, A. Nguyen, A.B. d'Oliveira, K. O'Shaughnessy, K.C. Peng, L.P. Perera, M.V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N.W. Reay, J.J. Reidy, A.C. dos Reis, H.A. Rubin, A.K.S. Santha, A.F.S. Santoro, A.J. Schwartz, M. Sheaff, R.A. Sidwell, A.J. Slaughter, M.D. Sokoloff, N.R. Stanton, K. Stenson, D.J. Summers, S. Takach, K. Thorne, A.K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, D. Yi, S. Yoshida, R. Zaliznyak, and C. Zhang
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, FOS: Physical sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), symbols.namesake, Pion, Fragmentation (mass spectrometry), Phase space, Pi, symbols, Feynman diagram, High Energy Physics::Experiment, Fermilab, Nuclear Experiment
Abstract: We study the charge correlations between charm mesons produced in 500 GeV pi- - N interactions and the charged pions produced closest to them in phase space. With 110,000 fully reconstructed D mesons from experiment E791 at Fermilab, the correlations are studied as functions of the Dpi - D mass difference and of Feynman x. We observe significant correlations which appear to originate from a combination of sources including fragmentation dynamics, resonant decays, and charge of the beam., Comment: 12 pages and 2 figures
Published: 1997
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25. Measurement of the branching ratio

Author: E.M. Aitala, S. Amato, J.C. Anjos, J.A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S.B. Bracker, P.R. Burchat, R.A. Burnstein, T. Carter, H.S. Carvalho, N.K. Copty, L.M. Cremaldi, C. Darling, K. Denisenko, A. Fernandez, P. Gagnon, K. Gounder, A.M. Halling, G. Herrera, G. Hurvits, C. James, P.A. Kasper, S. Kwan, D.C. Langs, J. Leslie, B. Lundberg, S. MayTal-Beck, B. Meadows, J.R.T. de Mello Neto, R.H. Milburn, J.M. de Miranda, A. Napier, A. Nguyen, A.B. d'Oliveira, K. O'Shaughnessy, K.C. Peng, L.P. Perera, M.V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N.W. Reay, J.J. Reidy, A.C. dos Reis, H.A. Rubin, A.K.S. Santha, A.F.S. Santoro, A.J. Schwartz, M. Sheaff, R.A. Sidwell, A.J. Slaughter, M.D. Sokoloff, N.R. Stanton, K. Stenson, D.J. Summers, S. Takach, K. Thorne, A.K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, D. Yi, S. Yoshida, R. Zaliznyak, and C. Zhang
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Charm (quantum number)
Abstract: We report a measurement of the branching ratio B(D+-->rho^0 l nu)/ B(D+-->K*0 l nu) from the Fermilab charm hadroproduction experiment E791. Based on signals of 49+-17 events in the D+--> rho^0 e nu mode and 54+-18 events in the D+--> rho^0 mu nu mode, we measure B(D+-->rho^0 e nu)/B(D+-->K*0 e nu) = 0.045+-0.014+-0.009, and B(D+-->rho^0 mu nu)/B(D+-->K*0 mu nu) = 0.051+-0.015+-0.009. Combining the results from both the electronic and muonic modes, we obtain B(D+-->rho^0 l nu)/B(D+-->K*0 l nu) = 0.047+-0.013. This result is compared to theoretical predictions.
Published: 1997
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26. Search forD0D¯0Mixing in Semileptonic Decay Modes

Author: E. M. Aitala, S. Amato, J. C. Anjos, J. A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S. B. Bracker, P. R. Burchat, R. A. Burnstein, T. Carter, H. S. Carvalho, N. K. Copty, I. Costa, L. M. Cremaldi, C. Darling, K. Denisenko, A. Fernandez, P. Gagnon, S. Gerzon, C. Gobel, K. Gounder, A. M. Halling, G. Herrera, G. Hurvits, C. James, P. A. Kasper, S. Kwan, D. C. Langs, J. Leslie, B. Lundberg, S. MayTal-Beck, B. Meadows, J. R. T. de Mello Neto, R. H. Milburn, J. M. de Miranda, A. Napier, A. Nguyen, A. B. d'Oliveira, K. O'Shaughnessy, K. C. Peng, L. P. Perera, M. V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N. W. Reay, J. J. Reidy, A. C. dos Reis, H. A. Rubin, A. K. S. Santha, A. F. S. Santoro, A. J. Schwartz, M. Sheaff, R. A. Sidwell, A. J. Slaughter, M. D. Sokoloff, N. R. Stanton, K. Stenson, K. Sugano, D. J. Summers, S. Takach, K. Thorne, A. K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, D. Yi, S. Yoshida, R. Zaliznyak, and C. Zhang
Subjects: Physics, Nuclear physics, Semileptonic decay, chemistry, Bar (music), High Energy Physics::Phenomenology, General Physics and Astronomy, chemistry.chemical_element, High Energy Physics::Experiment, Fermilab, Carbon, Mixing (physics)
Abstract: We report the result of a search for D0 - D0_bar mixing in the data from hadroproduction experiment E791 at Fermilab. We use the D* tag and semileptonic decay vertices of D0 to look for wrong-sign decays with mixing time dependence.
Published: 1996
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27. Mass splitting and production of Σc0 and Σc++ measured in 500 GeV π− -N interactions

Author: M. Sheaff, Michael Sokoloff, I. Costa, K. O'Shaughnessy, S. Gerzon, Milind Purohit, I. Bediaga, A. Rafatian, H.S. Carvalho, Don Summers, J. G. Smith, L. M. Cremaldi, E. Wolin, R.A. Burnstein, B. Quinn, A. Nguyen, S. Takach, E.M. Aitala, P.A. Kasper, Sudeshna Banerjee, J.J. Reidy, H. A. Rubin, Aleardo Manacero, G. Hurvits, N. R. Stanton, D. C. Langs, C. L. Darling, S. Amato, K. Gounder, J. M. De Miranda, S. B. Bracker, K. C. Peng, J. R. T. de Mello Neto, J. Wiener, J. Lichtenstadt, C. James, Simon Kwan, B. Lundberg, A.J. Slaughter, R. H. Milburn, S. MayTal-Beck, N. Kondakis, N. Witchey, A. K. Tripathi, A.K.S. Santha, T. Carter, K. Sugano, A. Fernandez, Jürgen Engelfried, Patricia R. Burchat, A.J. Schwartz, P. Gagnon, D. Ashery, G. Blaylock, S. Radeztsky, S. Watanabe, L.P. Perera, J. A. Appel, J. C. Anjos, Alberto Santoro, N. W. Reay, J. Leslie, A.M. Halling, Brian Meadows, R. Zaliznyak, R. A. Sidwell, K. Thorne, G. Herrera, A. Napier, K. Denisenko, D. Yi, R. Weiss-Babai, A. C. dos Reis, A. B. d'Oliveira, C. Zhang, and N. K. Copty
Subjects: Physics, Nuclear and High Energy Physics, Mass spectrum, Analytical chemistry, Spectral line
Abstract: From a sample of 2722 ± 78 Λc+ decaying to the pK−π+ final state, we have observed, in the hadroproduction experiment E791 at Fermilab, 143 ± 20 Σc0 and 122 ± 18 Σc++ through their decays to Λc+π±. The mass difference M(Σc0) − M(Λc+) is measured to be (167.38 ± 0.29 ± 0.15) MeV; for M(Σc++) − M(Λc+), we find (167.76 ± 0.29 ± 0.15) MeV. The rate of Λc+ production from decays of the Σc triplet is (22 ± 2 ± 3) % of the total Λc+ production assuming equal rate of production from all three, as measured for Σc0 and Σc++. We do not observe a statistically significant Σc baryon-antibaryon production asymmetry. The xF and pt2 spectra of Λc+ from Σc decays are observed to be similar to those for all Λc+'s produced.
Published: 1996
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28. Asymmetries between the production of D+ and D− mesons from 500 GeV/c π−-nucleus interactions as a function of xF and pt2

Author: S. Gerzon, A. Álvarez Fernández, N. Witchey, A. Nguyen, T. Carter, J. G. Smith, B. T. Meadows, B. Quinn, L. M. Cremaldi, E. Wolin, M. D. Sokoloff, N. R. Stanton, P. R. Burchat, D. C. Langs, R. A. Burnstein, A. Napier, A. Rafatian, M. V. Purohit, K. Denisenko, D. Yi, C. Zhang, Daniel Ashery, R. Weiss-Babai, A.K.S. Santha, G. Hurvits, J.J. Reidy, B. Lundberg, K. O'Shaughnessy, A.B. d'Oliveira, E.M. Aitala, K. Sugano, P.A. Kasper, S. Amato, K. C. Peng, Alberto Santoro, H. A. Rubin, S. Banerjee, A. J. Slaughter, S. MayTal-Beck, D. Granite, N. Kondakis, I. Bediaga, L. Perera, J. Wiener, P. Gagnon, J. R. T. de Mello Neto, G. Blaylock, C. Göbel, R. A. Sidwell, K. Thorne, S. Watanabe, J. Astorga, C. L. Darling, C. James, D. J. Summers, K. Gounder, J. M. De Miranda, R. H. Milburn, R. Zaliznyak, H.S. Carvalho, A. C. Reis, A.M. Halling, S. Takach, S. Radeztsky, A. J. Schwartz, G. Herrera, Aleardo Manacero, J. A. Appel, Simon Kwan, N. W. Reay, J. Leslie, S. B. Bracker, M. Aryal, J. C. Anjos, A. K. Tripathi, M. Sheaff, I. Costa, and J. Lichtenstadt
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, Meson, High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, FOS: Physical sciences, Function (mathematics), High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Pi, High Energy Physics::Experiment, Production (computer science), Fermilab, Nuclear Experiment, Nucleon, Beam (structure)
Abstract: We present asymmetries between the production of D+ and D- mesons in Fermilab experiment E791 as a function of xF and pt**2. The data used here consist of 74,000 fully-reconstructed charmed mesons produced by a 500 GeV/c pi- beam on C and Pt foils. The measurements are compared to results of models which predict differences between the production of heavy-quark mesons that have a light quark in common with the beam (leading particles) and those that do not (non-leading particles). While the default models do not agree with our data, we can reach agreement with one of them, PYTHIA, by making a limited number of changes to parameters used.
Published: 1996
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29. Search for the Flavor-Changing Neutral-Current DecaysD+→π+μ+μ−andD+→π+e+e−

Author: E. M. Aitala, S. Amato, J. C. Anjos, J. A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S. B. Bracker, P. R. Burchat, R. A. Burnstein, T. Carter, H. S. Carvalho, I. Costa, L. M. Cremaldi, C. Darling, K. Denisenko, A. Fernandez, P. Gagnon, S. Gerzon, C. Gobel, K. Gounder, D. Granite, A. M. Halling, G. Herrera, G. Hurvits, C. James, P. A. Kasper, N. Kondakis, S. Kwan, D. C. Langs, J. Leslie, J. Lichtenstadt, B. Lundberg, A. Manacero, S. MayTal-Beck, B. Meadows, J. R. T. de Mello Neto, R. H. Milburn, J. M. de Miranda, A. Napier, A. Nguyen, A. B. d'Oliveira, K. O'Shaughnessy, K. C. Peng, L. P. Perera, M. V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N. W. Reay, J. J. Reidy, A. C. dos Reis, H. A. Rubin, A. K. S. Santha, A. F. S. Santoro, A. J. Schwartz, M. Sheaff, R. A. Sidwell, A. J. Slaughter, J. G. Smith, M. D. Sokoloff, N. R. Stanton, K. Sugano, D. J. Summers, S. Takach, K. Thorne, A. K. Tripathi, S. Watanabe, R. Weiss, J. Wiener, N. Witchey, E. Wolin, D. Yi, R. Zaliznyak, and C. Zhang
Subjects: Physics, Particle physics, Flavor-changing neutral current, Pi, Mass spectrum, General Physics and Astronomy, Micro/Micro
Published: 1996
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30. Design, testing and performance of the frontend electronics for the LPS silicon microstrip detectors

Author: Hartmut Sadrozinski, Max Wilder, E. Barberis, W. Lockman, J. DeWitt, T. Dubbs, K. O'Shaughnessy, A. Webster, Jeffrey T. Rahn, E. Spencer, B. Hubbard, D.E. Dorfan, W.A. Rowe, Abraham Seiden, N. Cartiglia, and Alexander Grillo
Subjects: Very-large-scale integration, Physics, Nuclear and High Energy Physics, Comparator, Physics::Instrumentation and Detectors, business.industry, Pipeline (computing), Amplifier, Detector, Electrical engineering, Integrated circuit, law.invention, CMOS, law, Optoelectronics, Electronics, business, Instrumentation
Abstract: We present our experience in design, construction, testing and operation of the frontend electronics (FEE) for the LPS silicon strip detectors for HERA. A total of about 22 000 channels has been operated as close as the 10σ envelope of the 820 GeV proton beam. This FEE system is binary, controlled by one threshold set at about 0.8 fC, and has been optimized by combining a fast low-noise bipolar amplifier/comparator VLSI with a low-power digital pipeline manufactured in radiation-hard CMOS.
Published: 1995
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31. Inhibition of nitric oxide synthesis in vascular smooth muscle by retinoids

Author: K. Hirokawa, Martin R. Wilkins, P. Ramrakha, and K. O'Shaughnessy
Subjects: Male, Vascular smooth muscle, medicine.drug_class, Blotting, Western, Molecular Sequence Data, Aorta, Thoracic, Tretinoin, In Vitro Techniques, Nitric Oxide, Polymerase Chain Reaction, Muscle, Smooth, Vascular, Nitric oxide, Retinoids, chemistry.chemical_compound, Transforming Growth Factor beta, medicine, Animals, Retinoid, Rats, Wistar, Nitrite, Phenylephrine, Pharmacology, Base Sequence, biology, RNA-Directed DNA Polymerase, Transforming growth factor beta, Molecular biology, Rats, Nitric oxide synthase, chemistry, Biochemistry, biology.protein, Amino Acid Oxidoreductases, Nitric Oxide Synthase, Interleukin-1, Research Article, medicine.drug
Abstract: 1. These studies examine the effect of retinoids on interleukin 1 beta (IL-1 beta)-induced nitric oxide synthase (NOS) activity in cultured rat aortic vascular smooth muscle (VSM) cells and isolated rat aortic rings. 2. All-trans-retinoic acid (all-trans-RA, 0.1-10 microM) and its active analogues produced concentration-dependent inhibition of IL-1 beta (0.1-10 ng ml-1)-induced nitrite production in cultured VSM cells. In contrast, the inactive retinoid, Ro 14-6113 (0.1-10 microM), had no effect on IL-1 beta-induced nitrite production. 3. Since some of the actions of retinoids are mediated by induction of transforming growth factor beta (TGF-beta), its effect on inducible NOS activity in VSM cells was examined. TGF-beta produced concentration-dependent (0.1-10 ng ml-1) inhibition of IL-1 beta-induced nitrite production and the maximum effect (approximately 90% inhibition) was significantly greater than that seen with all-trans-RA (approximately 70% with 10 microM). However, an anti-TGF-beta antibody (50 micrograms ml-1) which blocked the effect of exogenous TGF-beta (5 ng ml-1) did not significantly reverse the inhibitory action of all-trans-RA (10 microM). 4. In addition to inhibiting IL-1 beta-induced nitrite production, all-trans-RA (10 microM) reduced substantially inducible NOS mRNA and protein levels in IL-1 beta-induced VSM cells (P0.01). 5. Incubation of isolated rat aortic rings with IL-1 beta (10 ng ml-1) caused a progressive resistance of the rings to the vasoconstrictor action of phenylephrine (10 nM to 10 microM). This effect was abolished by the addition of the nitric oxide synthase inhibitor L-NG-monomethyl-L-arginine (L-NMMA, 1 mM). All trans-RA (10 micro M) also markedly and significantly reversed this IL-1p-induced vascular hyporeactivity(P0.01).6. These data show that all-trans-RA and other active retinoids are able to block cytokine-stimulated expression of inducible NOS in cultured VSM cells and isolated aortic rings.
Published: 1994
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32. Temperature dependence of the radiation induced change of depletion voltage in silicon PIN detectors

Author: J. Ellison, K. Holzscheiter, Abraham Seiden, A. Morgan, T. Pal, E. Barberis, D. Skinner, M.A. Frautschi, Max Wilder, E. Spencer, R. Wichmann, D. McDonald, M. Mason, John Matthews, Stephen Wimpenny, A. P.T. Palounek, N. Cartiglia, Hartmut Sadrozinski, A. P. Heinson, P. Rinaldi, A. Webster, K. O'Shaughnessy, D.P. Coupal, W.A. Rowe, Alexander Grillo, Hans Ziock, and Jeffrey T. Rahn
Subjects: Physics, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, Annealing (metallurgy), chemistry.chemical_element, Atmospheric temperature range, Molecular physics, Fluence, Particle detector, Semiconductor detector, Nuclear physics, chemistry, Depletion region, Radiation damage, Instrumentation
Abstract: We present a study of how temperature affects the change in the depletion voltage of silicon PIN detectors damaged by radiation. We study the initial radiation damage and the short-term and long-term annealing of that damage as a function of temperature in the range from −10°C to +50°C, and as a function of 800 MeV proton fluence up to 1.5×1014 p/cm2. We express the pronounced temperature dependences in a simple model in terms of two annealing time constants which depend exponentially on the temperature.
Published: 1994
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33. Novel model for end-neuroma formation in the amputated rabbit forelimb

Author: Kristina K. O'Shaughnessy, Jason H. Ko, Todd A. Kuiken, Gregory A. Dumanian, and Peter S. Kim
Subjects: medicine.medical_specialty, Neurology, business.industry, medicine.medical_treatment, Morphologic change, Clinical Neurology, Neuroma, medicine.disease, lcsh:RC346-429, Surgery, lcsh:RD701-811, medicine.anatomical_structure, Amputation, lcsh:Orthopedic surgery, medicine, Amputation Neuroma, Neurology (clinical), Neurosurgery, Forelimb, business, Brachial plexus, lcsh:Neurology. Diseases of the nervous system, Research Article
Abstract: Background The forelimb amputee poses many reconstructive challenges in the clinical setting, and there is a paucity of established surgical models for study. To further elucidate the pathogenic process in amputation neuroma formation, we created a reproducible, well-tolerated rabbit forelimb amputation model. Methods Upon approval from the Institutional Animal Care and Use Committee, 5 New Zealand White rabbits underwent left forelimb amputation. During this initial surgery, the median, radial and ulnar nerves were transected 1.6-2.5 (mean 2.0) cm distal to the brachial plexus, transposed onto the anterior chest wall and preserved at length. Six weeks subsequent to the amputation, the distal 5 mm of each neuroma was excised, and the remaining stump underwent histomorphometric analysis. Results The nerve cross sectional areas increased by factors of 1.99, 3.17, and 2.59 in the median (p = 0.077), radial (p < 0.0001) and the ulnar (p = 0.0026) nerves, respectively. At the axonal level, the number and cross-sectional area of myelinated fibers demonstrated an inverse relationship whereby the number of myelinated fibers in the median, radial and ulnar nerves increased by factors of 5.13 (p = 0.0043), 5.25 (p = 0.0056) and 5.59 (p = 0.0027), and the cross-sectional areas of these myelinated fibers decreased by factors of 4.62 (p < 0.001), 3.51 (p < 0.01), and 4.29 (p = 0.0259), respectively. Conclusion Given that the surgical model appears well-tolerated by the rabbits and that patterns of morphologic change are consistent and reproducible, we are encouraged to further investigate the utility of this model in the pathogenesis of neuroma formation.
Published: 2010

34. A measurement of σtot(γp) at

Author: Ada Solano, S. Limentani, M. Z. Wang, G.A. Blair, A. Seidman, Stan Bentvelsen, D. Haun, Giuseppe Iacobucci, S. Kartik, Francois Corriveau, A. Kotański, P. Morawitz, S. Kasai, A. Cassidy, M. Nakahata, Marco Schioppa, P. G. Pelfer, S.J.P. Smith, K. U. Pösnecker, J. Nash, U. Schneekloth, T. Neumann, T. Barillari, Y. Eisenberg, M. M. Mobayyen, R. Seidlein, A. Mass, Roberto Casalbuoni, S. Kitamura, P.F. Ermolov, H. F.W. Sadrozinski, A. Shapira, Fernando Barreiro, D. Monaldi, K. Heinloth, R. Casaccia, H. Müsch, P. Cloth, J. Kochocki, Mauro Morandin, Z. Jakubowski, Giuseppe Levi, I. Gialas, R. Imlay, Rosario Nania, S. De Jong, S. Magill, A. Prinias, K. Jelen, Ulf Behrens, Federico Cindolo, H. Kowalski, F. Ciralli, W. Koch, F. J. Sciulli, A. Hofmann, Tadeusz Kowalski, C.J.S. Morgado, A. Freidhof, Michele Arneodo, N.C. Roocroft, S. Kramarczyk, L. W. Hung, J. Engelen, G. Poelz, James Crittenden, A. Dannemann, G. Sartorelli, A Furtjes, F. Gasparini, A. A. Savin, J. F. Labs, L. Suszycki, A. Bargende, W. Dorth, F. Dal Corso, J. Straver, L. Hagge, N. Dyce, Tobias M. Haas, T. Hasegawa, A. Leich, A. Margotti, Roberto Carlin, Shoichi Yamada, R.C.E. Devenish, Debades Bandyopadhyay, D. Revel, A. A. Voronin, T. Ishii, B. Lisowski, T. J. Llewellyn, A. Stopczyński, C. Voci, Silvia Maselli, M. Momayezi, G. Laurenti, G. Barbagli, G. Cara Romeo, E. Tscheslog, S. Nagayama, R. Ayed, R. L. Talaga, S. Bhadra, F. Ikraiam, G. Cases, R. Yoshida, B.D. Burow, I. Butterworth, T. Kȩdzierski, Y. Iga, J. M. Pawlak, A. Vorvolakos, D. McQuillan, A. Zichichi, Matthias Kasemann, R. Timellini, A. Dake, D. Notz, C. Nemoz, K. Muchorowski, N. H. Brook, T.L. Short, R. R. McNeil, Ta Romanowski, Daniele Dominici, R. Wedemeyer, J.D. Prentice, E. Barberis, Samuel Silverstein, K. Charchuła, P. Erhard, Jens Hartmann, T. W. Jones, Anna Goussiou, M. Löwe, R. Loveless, U. Mallik, T. Khatri, J.W. Mitchell, Greg P Heath, L. Chen, Eduardo Ros, R. J. Cashmore, G. L. Bashindzhagyan, R. J. Teuscher, M. Geerts, K. Blankenship, Luis Labarga, J. J. Whitmore, M. Derrick, T. Tymieniecka, Danuta Kisielewska, C.R. Sampson, R. J. Seifert, P.M. Hallam-Baker, H. Dabbous, M. de Kamps, N. Pavel, G. Grzelak, J. F. Martin, P. Kooijman, F. F. Wilson, M. Chiarini, U. Kötz, Vivian O'Dell, H. J. Kim, T. C. Bacon, M. Lomperski, Stefano Maria Mari, R. Gläser, Guenter Wolf, A. Bernstein, Y. Zamora Garcia, A. Francescato, C. Youngman, Hideki Okuno, W. Burkot, R. J. Nowak, S. De Pasquale, J.K. Mayer, S. Schlenstedt, I. Laakso, M. Brkic, J. K. Bienlein, R. Szwed, D. Shaw, P. J. Bussey, S. Qian, G. D'Agostini, Ben Bylsma, B. Lu, J. Milewski, J. Krüger, J. F. de Trocóniz, M. Nuti, J. Schroeder, H. Chaves, Masashi Hazumi, L. Zawiejski, T. Y. Ling, P. de Jong, Q. Lin, Inkyu Park, F. Benard, G. Zech, S. De Curtis, H. Hartmann, Y. Nakamitsu, Katsuo Tokushuku, Giovanni Abbiendi, M.I. Ferrero, R. J. Tapper, Robert Klanner, M. Rohde, N. A. McCubbin, T. S. Yoon, K. Wick, B. Musgrave, I. Fleck, Thomas Trefzger, A.G. Tenner, H.-P. Jakob, H. van der Lugt, Umberto Dosselli, J.B. Lane, E. Paul, David Cussans, Janusz Chwastowski, K. Sugano, Rr Rau, R. Brugnera, L. S. Durkin, J. N. Lim, A. Contin, W. Weihs, D. J. Gilkinson, V. A. Kuzmin, D. C. Bailey, E. A. De Wolf, G. Jahnen, Claudia Glasman, Sridhara Dasu, M. De Giorgi, Halina Abramowicz, K. Stojda, W. Metcalf, F. Turkot, R. Stanek, U. Holm, S. Mengel, J. Mainusch, Gm Levman, B. Gutjahr, Luca Stanco, C. Markou, M. Adamus, G. Marini, B. Löhr, E. Badura, M. Kückes, Np Zotov, A.K. Wróblewski, A. Bamberger, C. Rethfeldt, W. Schott, F. Selonke, E. Hilger, T. Bienz, G. Bruni, S. D'Auria, P. Joos, Cd Catterall, R. Heifetz, F. Arzarello, M. Rost, A. Meyer, B. Foster, F. W. Bullock, Mariusz Flasiński, Luisa Cifarelli, M. Krzyżanowski, A. Byrne, Neville Harnew, J. Roldán, B. Schneider, M. Lancaster, D.D. Reeder, A. Montag, B. Diekmann, B.Y. Oh, E. Rulikowska-Zarȩbska, Krzysztof Piotrzkowski, J.A. Zakrzewski, C. A. Heusch, C. Raine, P. Nylander, J. Leslie, J. Del Peso, T. Watanabe, C. Li, Lucia Votano, E. Lohrmann, Kr Long, C. Fordham, G. Castellini, M. Zachara, H. Kreutzmann, L.E. Sinclair, J. C. Vermeulen, M. Mattioli, R. van Woudenberg, G. Theisen, U. Karshon, Lothar At Bauerdick, T. Woeniger, L. Lamberti, F.S. Chlebana, K.M. Furutani, M.B. Crombie, H. Uijterwaal, P.M. Patel, A.F. Żarnecki, W. Schulz, Luis Hervas, D. Boscherini, W.N. Murray, G. Anzivino, G. Susinno, M. Nakao, P. Borzemski, R. S. Orr, P. B. Straub, E.E. Ronat, B. Behrens, Nicolo Cartiglia, J. Ciborowski, R. Ullmann, S. Yang, V.A. Jamieson, M. Dardo, C. Coldewey, R.S. Gilmore, H.J. Grabosch, B. Krebs, F. Zetsche, J. L. Thron, D. Lüke, T. Poser, M. Bonori, Maurizio Basile, S. Nickel, L. Bellagamba, D. B. Miller, J. Gajewski, T. Massam, J. Biltzinger, A.H. Walenta, H. Hultschig, H. Kammerlocher, B. H. Wiik, John Hart, I. Ali, Wr Frisken, S. Ritz, D. S. Hanna, L.W. Wiggers, Masami Chiba, G. Maccarrone, Klaus Kurt Desch, C. Del Papa, I. McArthur, P. Bruni, Costas Foudas, L.W. Mo, Michele Guida, Jose Repond, W. H. Smith, A. Caldwell, G.G. Stairs, G. Gloth, Mário Costa, U. Contino, T. Tsurugai, E. McCliment, J.C. Giddings, D.M. Gingrich, A. Seiden, F. Frasconi, M. Przybycień, F. Palmonari, S.S. Wilson, D. Zer-Zion, A. T. Doyle, A.M. Khan, R. Schattevoy, G. Bari, J.-L. Schneider, W. Vogel, P. Luffman, K. Eskreys, T.P. Shah, D. H. Saxon, J.S.T. Ng, P. Göttlicher, B. Hubbard, M. Ptacek, Aharon Levy, J.R. Forbes, K.W. McLean, D. Krakauer, A. Ladage, S. Söldner-Rembold, M. Iori, A. Nigro, Y. Nagasawa, A. Dwuraźny, J. Mollen, H.F. Fawcett, E.N. Kuznetsov, O. Mańczak, G. F. Hartner, U. Camerini, A. M. Cooper-Sarkar, S. Dagan, R. Walczak, Yu. A. Golubkov, H. Tiecke, M. Posocco, Geoffrey Smith, Detlef Filges, D. K. Hasell, K. O'Shaughnessy, A. Kruse, J. Shulman, R. Salomon, Juan Terron, M. Kasprzak, P. Giusti, G. Drews, J. A. Parsons, W. Hain, K. Dierks, J. M. Butterworth, J. Zaja̧c, B. Nizioł, A. Eskreys, S. K. Park, Amedeo Staiano, Tachishige Hirose, M. Kuze, R. Hamatsu, J. Kulka, L. Wai, P.L. Makkar, R. Stroili, C. Peroni, M. Roco, G. Geitz, W. Kröger, Dg Stairs, J. Malos, and C. Fanin
Subjects: Physics, Nuclear and High Energy Physics, ZEUS (particle detector), Photon, High Energy Physics::Phenomenology, Nuclear Theory, Detector, Virtual particle, HERA, Particle detector, Particle scattering, Nuclear physics, Cross section (physics), High Energy Physics::Experiment, Nuclear Experiment
Abstract: The total photoproduction cross section is determined from a measurement of electroproduction with the ZEUS detector at HERA. The Q2 values of the virtual photons are in the range 10−7
Published: 1992
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35. Study of the effects of neutron irradiation on silicon strip detectors

Author: Abraham Seiden, Walter F. Sommer, Hans Ziock, Phillip D. Ferguson, D. Pitzl, S. Sotthibandhu, Geoffrey Hall, P. Guibellino, N. Cartiglia, W.A. Rowe, B. Hubbard, J. Lesloe, M. Edwards, E. Spencer, H.F.-W. Sadoziski, K. O'Shaughnessy, and G. Panizza
Subjects: inorganic chemicals, Physics, Nuclear and High Energy Physics, Silicon, Doping, technology, industry, and agriculture, chemistry.chemical_element, Fluence, Nuclear physics, chemistry, Electrical resistivity and conductivity, Radiation damage, Neutron, Atomic physics, Instrumentation, Voltage, ISIS neutron source
Abstract: Silicon strip detectors and test structures were exposed to neutron fluences up to Φ = 6.1 × 1014 n/cm2, using the ISIS neutron source at the Rutherford Appleton Laboratory (UK). In this paper we report some of our results concerning the effects of displacement damage, with a comparison of devices made of silicon of different resistivity. The various samples exposed showed a very similar dependence of the leakage current on the fluence received. We studied the change of effective doping concentration, and observed a behaviour suggesting the onset of type inversion at a fluence of ∼ 2.0 × 1013 n/cm2, a value which depends on the initial doping concentration. The linear increase of the depletion voltage for fluences higher than the inversion point could eventually determine the maximum fluence tolerable by silicon detectors.
Published: 1992
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36. Type inversion in silicon detectors

Author: Hartmut Sadrozinski, E. Spencer, N. Cartiglia, D. Hutchinson, K. Holzscheiter, Abraham Seiden, D. Pitzl, W.A. Rowe, Hans Ziock, B. Hubbard, J. Leslie, K. O'Shaughnessy, Walter F. Sommer, and Phillip D. Ferguson
Subjects: Physics, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, business.industry, Doping, chemistry.chemical_element, Fluence, Acceptor, Photodiode, law.invention, Semiconductor detector, chemistry, law, Optoelectronics, Irradiation, Atomic physics, business, Instrumentation, Diode
Abstract: Silicon strip detectors and photodiodes were irradiated in an 800 MeV proton beam. The change of the effective doping concentration was monitored by measuring diode C-V curves. Type inversion is observed at a fluence Φ = 1.5 × 1013 cm−2. Further evidence for type inversion is obtained from a study of pulses generated by an infrared LED in silicon strip detectors. A two-level parametrization is used to describe donor removal and acceptor state creation during proton irradiation: Neff = N0 exp(−cφ)−βφ. We measure values of c = (5.5 ± 1.1) × 1014 cm2 and β = (0.031 ± 0.006) cm−1. After type inversion the depletion voltage increases with proton fluence. This may set the limit for the lifetime of silicon detectors at future colliders. However, the occurence of type inversion does not degrade the performance of silicon strip detectors. The effective doping concentration showed a complex post irradiation behaviour. After a short term annealing period the doping concentration increased beyond the value that had been reached immediately after the exposure.
Published: 1992
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37. Radiation-hard front-end electronics for silicon microstrip detectors in ZEUS

Author: Hartmut Sadrozinski, D.E. Dorfan, K. O'Shaughnessy, E. Spencer, J. DeWitt, B. Hubbard, Abraham Seiden, D. Pitzl, and W.A. Rowe
Subjects: Physics, Nuclear and High Energy Physics, ZEUS (particle detector), Physics::Instrumentation and Detectors, business.industry, Hardware_PERFORMANCEANDRELIABILITY, Integrated circuit, Particle detector, Semiconductor detector, law.invention, Computer Science::Hardware Architecture, Computer Science::Emerging Technologies, CMOS, Hardware_GENERAL, law, Logic gate, MOSFET, Hardware_INTEGRATEDCIRCUITS, Optoelectronics, High Energy Physics::Experiment, Hardware_ARITHMETICANDLOGICSTRUCTURES, business, Instrumentation, Radiation hardening, Hardware_LOGICDESIGN
Abstract: We describe the status of the front-end electronics for silicon microstrip detectors in the Leading Proton Spectrometer (LPS) in ZEUS at HERA. We present new data on the radiation hardness of dielectric isolated bipolar transistors and of logic gates from a recent radiation-hard CMOS test run.
Published: 1991
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38. Silicon tracker for the superconducting supercollider

Author: K. O'Shaughnessy, Abraham Seiden, D. Pitzl, A. J. Weinstein, C. Baker, M.T. Gamble, J. A. J. Matthews, B. Hubbard, K. A. Woloshun, T.C. Thompson, J. Bradley, G. D. Dransfield, Hans-Joachim Ziock, J. Hylen, Warner A. Miller, and R. S. Reid
Subjects: Superconductivity, Physics, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, business.industry, High Energy Physics::Phenomenology, Detector, Electrical engineering, chemistry.chemical_element, SuperCollider, Status report, Tracking (particle physics), Nuclear physics, chemistry, High Energy Physics::Experiment, business, Instrumentation, computer, computer.programming_language
Abstract: This is a status report on the design of a large silicon tracking detector for the superconducting supercollider (SSC). We present our design, the principles on which it is based and initial work on the mechanical support structure for the detectors.
Published: 1991
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39. Study of radiation effects on AC-coupled silicon strip detectors

Author: Hans-Joachim Ziock, E. Spencer, D. Pitzl, J. Leslie, Hartmut Sadrozinski, K. O'Shaughnessy, K. Clark, E.C. Milner, N. Cartiglia, W.A. Rowe, J. Ellison, B. Hubbard, Walter F. Sommer, and Phillip D. Ferguson
Subjects: Capacitive coupling, Nuclear and High Energy Physics, Photon, Materials science, Silicon, business.industry, chemistry.chemical_element, Radiation, Atomic and Molecular Physics, and Optics, law.invention, Threshold voltage, Capacitor, chemistry, law, Optoelectronics, Neutron, business, Diode
Abstract: AC-coupled silicon strip detectors were exposed to neutron fluences of 5·10 13 n/cm 2 and to Co 60 photon doses of 2.8 Mrad. No change in the value of the coupling capacitors was observed. Polysilicon resistor values increased by 15% and saturated after 200 krad photon dose. They were stable under neutron irradiation. Thee interstrip punchthrough threshold voltage increased from 4 to 13 V under photon irradiation. The accumulation of fixed charges in SiO 2 was measured using MOS capacitors and the photon-induced surface current generation velocity was determined with gated diodes.
Published: 1991
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40. A reanalysis of B0-B̄0 mixing in e+e− annihilation at 29 GeV

Author: A. Petersen, J. M. Brom, A. Seiden, P. Voruganti, F. Butler, D. Hutchinson, Darien Wood, K. O'Shaughnessy, H. O. Ogren, J. A. Jaros, A. S. Schwarz, M. L. Perl, C. W. Peck, W. Koska, Kenneth G. Hayes, J. Boyer, K. Riles, G. Bonvicini, J. A. Kadyk, A. Breakstone, R. P. Thun, D.P. Coupal, Stephen Robert Wagner, E. Soderstrom, R. R. Larsen, Ryszard Stroynowski, D. Fujino, J. Hylef, M. S. Gold, G. H. Trilling, D. Nitz, Gerson Goldhaber, W. R. Innes, F. C. Porter, D. Y. Wu, P. Rankin, D. Amidei, R. Frey, B. D. Milliken, Timothy Barklow, E. Wicklund, P. C. Rowson, B. W. Leclaire, S. R. Klein, G. Hanson, A. J. Lankford, J. Haggerty, Jordan Nash, S. L. White, J. G. Smith, H. F.W. Sadrozinski, Alan Litke, Cords D, T. Schalk, W. B. Schmidke, S. Weisz, B. B. Brabson, Michael Levi, R. J. Hollebeek, F. Calviño, P. Weber, Patricia R. Burchat, D. E. Dorfan, M. Petradza, R. A. Ong, H. Veltman, B. A. Barnett, D. P. Stoker, W. Kozanecki, H. Schellman, G. S. Abrams, M. Jaffre, F. A. Harris, K. K. Gan, E. Fernandez, C.M. Hawkes, R. Tschirhart, Sherwood Parker, G. J. Feldman, George Gidal, R. C. Field, I. Bartelt, Fordham C, K.C. Moffeit, D. Herrup, A. J. Weinstein, T. Glanzman, J. A. J. Matthews, V. Luth, A. Snyder, P.S. Drell, W. T. Ford, L. Gladney, DeStaebler Hc, N. S. Lockyer, Mark E. Nelson, I. Juricic, R. J. Cence, B. C. Barish, D. Karlen, L. Müller, D. I. Meyer, J. M. Yelton, A. R. Baden, T. Himel, J. Kent, P. D. Sheldon, D. R. Rust, Burton Richter, D. Blockus, J. Dorfan, A. M. Boyarski, A. J. Weir, R. Van Kooten, James P. Alexander, A. Green, D. L. Burke, T. Schaad, M. Alvarez, Grosse-Wiesmann P, R. Harr, J. W. Chapman, Adolphsen Ce, C. A. Heusch, and F. Bulos
Subjects: Quark, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, High Energy Physics::Phenomenology, Hadron, Astrophysics::Cosmology and Extragalactic Astrophysics, Measure (mathematics), Nuclear physics, High Energy Physics::Experiment, Mixing (physics), Storage ring, Lepton
Abstract: Data taken by the Mark II detector at the PEP storage ring was used to measure the rate of dilepton production in multihadronic events produced by e + e − annihilation at √ s =29 GeV. We determine the probability that a hadron initially containing a b (b) quark decays to a positive (negative) lepton to be 0.17 −0.08 +0.15 , with 90% confidence level limits of 0.06 and 0.38.
Published: 1990
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41. Upper limits onD±andB±decays to two leptons plusπ±orK±

Author: T. Schalk, J. Dorfan, A. M. Boyarski, P. Voruganti, Jordan Nash, S. Weisz, E. Soderstrom, A. Seiden, Kenneth G. Hayes, James Alexander, D.P. Coupal, Stephen Robert Wagner, D. Herrup, J. S. Haggerty, D. L. Burke, G. Hanson, S.L. White, B. W. LeClaire, D. Karlen, K. C. Moffeit, A. Baden, Darien Wood, E. Wicklund, Fordham C, Paul Sheldon, M. S. Gold, Walter R. Innes, T. Schaad, D. Hutchinson, B. D. Milliken, H. O. Ogren, M. Petradza, R. A. Ong, D. E. Dorfan, Clemens A. Heusch, A. J.R. Weinstein, J. Ballam, P. Weber, Ryszard Stroynowski, D. Fujino, Carl W. Akerlof, G. Bonvicini, D. Nitz, D. Y. Wu, R. Van Kooten, Burton Richter, B. B. Brabson, I. Juricic, P. Rankin, J. G. Smith, L. Gladney, M. Jaffré, George Gidal, A. Green, J. Hylen, D. Blockus, M. P. Alvarez, F. Bulos, H. F.W. Sadrozinski, J. Boyer, G. J. Feldman, F. Calviño, R. Tschirhart, E. Fernandez, D. P. Stoker, K. K. Gan, H. Veltman, R. J. Cence, N. S. Lockyer, D. Amidei, J. A. J. Matthews, Gerson Goldhaber, B. C. Barish, H. Schellman, W. Kozanecki, R. Harr, J. A. Kadyk, Cords D, F. Butler, A. S. Schwarz, Michael Levi, DeStaebler Hc, T. Glanzman, J. Kent, A. Breakstone, W. B. Schmidke, G. S. Abrams, G. H. Trilling, John Yelton, K. O'Shaughnessy, R. J. Hollebeek, Mark E. Nelson, A. Petersen, C.M. Hawkes, R. Frey, C. W. Peck, S. R. Klein, R. C. Field, D. R. Rust, R. R. Larsen, P. C. Rowson, Adolphsen Ce, L. Müller, J. W. Chapman, W. T. Ford, F. A. Harris, Sherwood Parker, Grosse-Wiesmann P, A. J. Weir, W. Koska, K. Riles, Timothy Barklow, Alan Litke, A. J. Lankford, John E. Bartelt, Patricia R. Burchat, J. A. Jaros, V. Luth, A. Snyder, Persis S. Drell, T. Himel, R. P. Thun, B. A. Barnett, D. I. Meyer, Frank C. Porter, and Jean-Marie Brom
Subjects: Nuclear physics, Semileptonic decay, Physics, Particle decay, Particle physics, Pion, Meson, Branching fraction, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Leptoquark, B meson, Lepton
Abstract: Data taken by the Mark II detector at the SLAC {ital e}{sup +}{ital e}{sup {minus}} storage ring PEP was used to search for exclusive decays of {ital D}{sup {plus minus}} and {ital B}{sup {plus minus}} mesons into two charged leptons plus a charged pion or kaon. All possible charge and lepton combinations consistent with charge conservation were considered and no evidence for any signals was found. We obtain upper limits for the various branching ratios ranging from 2.5{times}10{sup {minus}3} to 9.2{times}10{sup {minus}3}, at a 90% confidence level. Some of these limits can be used to constrain leptoquark masses in various models.
Published: 1990
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42. Babies, pre-eclamptic mothers and grandparents: a three-generation phenotyping study

Author: Noor Kalsheker, G Chapman, Sabaratnam Arulkumaran, F Cheng, Broughton Pipkin F, C Sparey, Mark J. Caulfield, D Tuffnell, R Keys, E Byford, M Henfrey, M Selinger, M McDade, Sarah Ward, Catherine Williamson, De, Swiet, M, B Newcombe, K O'Shaughnessy, I Scudamore, M Habiba, David J. Williams, P Jarrett, J McCulloch, J Waugh, W Mackenzie, Kwong, Lee, W, A Cameron, E Dennehy, PN Baker, S O'Malley, Dty Liu, G Hackett, Mark D. Kilby, Martin Farrall, K Hinshaw, L Davies, Anna F. Dominiczak, MN Fitzgibbon, S Bjornsson, C Mercer, G Thompson, L Samwiil, James J. Walker, Ian Symonds, Pms O'Brien, Carole Dodd, M Mohajer, Christopher W.G. Redman, Linda M. Morgan, B Lim, and Sheila Macphail
Subjects: Adult, Parents, medicine.medical_specialty, Physiology, Birth weight, Pregnancy Complications, Cardiovascular, Blood Pressure, Severity of Illness Index, Pre-Eclampsia, Pregnancy, Severity of illness, Infant Mortality, Internal Medicine, medicine, Birth Weight, Humans, Genetic Predisposition to Disease, Antihypertensive Agents, Aged, business.industry, Obstetrics, Postpartum Period, Infant, Newborn, Pregnancy Outcome, Grandparent, Hypertension, Pregnancy-Induced, Middle Aged, medicine.disease, Infant mortality, United Kingdom, Blood pressure, Phenotype, Hypertension, Pregnancy induced, Female, Cardiology and Cardiovascular Medicine, business, Postpartum period
Abstract: OBJECTIVES: Pre-eclampsia (PE) is associated with an increased incidence of cardiovascular disease in later life. Daughters of PE mothers have an increased risk of developing the disease; recent epidemiological data suggest a (grand)paternal contribution. We have directly studied the parents of 673 women with stringently defined PE in relation to their daughters' disease. METHODS: (Grand)parental medical history, current medication and blood pressure (using an Omron 705 automated monitor) were recorded, with obstetric history for the grandmother, including directly verified pregnancy hypertension. RESULTS: The age of the 649 participating grandmothers was 55.5 +/- 7.5 years (mean +/- SD) and that of the 542 participating grandfathers was 58.0 +/- 7.3 years. Essential hypertension (EHT) requiring therapy was present in 23.4% of the grandmothers and 22.8% of the grandfathers. Patients had moderate to severe PE; a quarter were delivered before 34 weeks' gestation. A third of the babies had birthweights below the third centile; the perinatal mortality rate was 2.1%. Grandparental absolute systolic pressures and EHT status were highly significant determinants of maternal systolic pressure during gestation (F = 11.8, P < 0.001; F = 8.91, P = 0.003, respectively); maternal body mass index (BMI) had less effect. A similar, less marked, pattern was seen for diastolic pressure (F = 6.01, P = 0.014; F = 11.50, P < 0.0001). Grandmaternal EHT did not influence her daughter's systolic or diastolic pressure (P > 0.2 for both). CONCLUSIONS: A paternal, but not maternal, history of EHT is associated with increased risks of non-pregnant hypertension in the children, the risk being greater in daughters than sons. Pregnancy may unveil or exacerbate this effect, possibly reflecting underlying endothelial vulnerability.
Published: 2007

43. Publisher’s Note: Model-independent measurement ofS-waveK−π+systems usingD+→Kππdecays from Fermilab E791 [Phys. Rev. D 73, 032004 (2006)]

Author: P. Gagnon, R. Zaliznyak, A.M. Halling, G. Blaylock, M. V. Purohit, S. Banerjee, N. W. Reay, C. L. Darling, J. Leslie, B. T. Meadows, A.B. d'Oliveira, E.M. Aitala, D. C. Langs, M. D. Sokoloff, A.K.S. Santha, P. R. Burchat, N. R. Stanton, B. Lundberg, G. F. Fox, D. J. Summers, Simon Kwan, D. Mihalcea, K. Gounder, K. C. Peng, J. M. De Miranda, S. Devmal, K. O'Shaughnessy, S. Watanabe, M. Sheaff, P.A. Kasper, A. C. dos Reis, N. Witchey, S. M. Yang, A. Napier, K. Denisenko, C. Zhang, S. Yoshida, J. Wiener, C. Göbel, A. Álvarez Fernández, D. Yi, S. B. Bracker, Alberto Santoro, W. M. Dunwoodie, R. H. Milburn, A. J. Slaughter, D. A. Sanders, R. Weiss-Babai, S. Amato, L. M. Cremaldi, R. A. Burnstein, I. Bediaga, E. Wolin, L. Perera, J.J. Reidy, B. Quinn, J. A. Appel, A. Rafatian, K. Thorne, A. Nguyen, S. Takach, A. Massafferri, G. Hurvits, R. A. Sidwell, S. Radeztsky, S. MayTal-Beck, T. Carter, A. K. Tripathi, C. James, J. Magnin, Kevin Stenson, J. C. Anjos, J. R. T. de Mello Neto, A. J. Schwartz, G. Herrera, H.S. Carvalho, N. K. Copty, J. Solano, Daniel Ashery, H. A. Rubin, and R. J. Stefanski
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Particle decay, S-wave, Pi, Fermilab
Published: 2006
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44. Model-independent measurement ofS-waveK−π+systems usingD+→Kππdecays from Fermilab E791

Author: E. M. Aitala, S. Amato, J. C. Anjos, J. A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S. B. Bracker, P. R. Burchat, R. A. Burnstein, T. Carter, H. S. Carvalho, N. K. Copty, L. M. Cremaldi, C. Darling, K. Denisenko, S. Devmal, A. Fernandez, G. F. Fox, P. Gagnon, C. Gobel, K. Gounder, A. M. Halling, G. Herrera, G. Hurvits, C. James, P. A. Kasper, S. Kwan, D. C. Langs, J. Leslie, B. Lundberg, J. Magnin, A. Massafferri, S. MayTal-Beck, B. Meadows, J. R. T. de Mello Neto, D. Mihalcea, R. H. Milburn, J. M. de Miranda, A. Napier, A. Nguyen, A. B. d’Oliveira, K. O’Shaughnessy, K. C. Peng, L. P. Perera, M. V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N. W. Reay, J. J. Reidy, A. C. dos Reis, H. A. Rubin, D. A. Sanders, A. K. S. Santha, A. F. S. Santoro, A. J. Schwartz, M. Sheaff, R. A. Sidwell, A. J. Slaughter, M. D. Sokoloff, J. Solano, N. R. Stanton, R. J. Stefanski, K. Stenson, D. J. Summers, S. Takach, K. Thorne, A. K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, S. M. Yang, D. Yi, S. Yoshida, R. Zaliznyak, C. Zhang, and W. M. Dunwoodie
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Particle decay, Pion, Meson, Partial wave analysis, Hadron, Dalitz plot, Production (computer science), Invariant mass
Abstract: A model-independent partial-wave analysis of the S-wave component of the K{pi} system from decays of D{sup +} mesons to the three-body K{sup -}{pi}{sup +}{pi}{sup +} final state is described. Data come from the Fermilab E791 experiment. Amplitude measurements are made independently for ranges of K{sup -}{pi}{sup +} invariant mass, and results are obtained below 825 MeV/c{sup 2}, where previous measurements exist only in two mass bins. This method of parametrizing a three-body decay amplitude represents a new approach to analyzing such decays. Though no model is required for the S-wave, a parametrization of the relatively well-known reference P- and D-waves, optimized to describe the data used, is required. In this paper, a Breit-Wigner model is adopted to describe the resonances in these waves. The observed phase variation for the S-, P-, and D-waves do not match existing measurements of I=(1/2) K{sup -}{pi}{sup +} scattering in the invariant mass range in which scattering is predominantly elastic. If the data are mostly I=(1/2), this observation indicates that the Watson theorem, which requires these phases to have the same dependence on invariant mass, may not apply to these decays without allowing for some interaction with the other pion. The production rate of K{supmore » -}{pi}{sup +} from these decays, if assumed to be predominantly I=(1/2), is also found to have a significant dependence on invariant mass in the region above 1.25 GeV/c{sup 2}. These measurements can provide a relatively model-free basis for future attempts to determine which strange scalar amplitudes contribute to the decays.« less
Published: 2006
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45. BEAM TESTS OF THE ZEUS BARREL CALORIMETER

Author: ZEUS Collaboration M. Derrick, D. Krakauer, S. Magill, B. Musgrave, J. Repond, S. Repond, R. Stanek, R. L. Talaga, J. Thron Argonne National Laboratory, Argonne, IL, USA 47 F. Arzarello, R. Ayad l, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini 2, M. Chiarini, L. Cifarelli, F. Cindolo, F. Ciralli, A. Contin, S. D'Auria, C. Del Papa, F. Frasconi, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, Q. Lin, B. Lisowski, G. Maccarrone, A. Margotti, T. Massam, R. Nania, C. Nemoz, F. Palmonari, G. Sartorelli, R. Timellini, Y. Zamora Garcia l, A. Zichichi University, INFN Bologna, Bologna, Italy 39 A. Bargende, J. Crittenden, K. Desch, B. Diekmann, T. Doeker, A. Frey, M. Geerts, G. Geitz, H. Hartmann, D. Haun, K. Heinloth, E. Hilger, H. P. Jakob, S. Kramarczyk, M. Kiickes 3, A. Mass, S. Mengel, J. Mollen, D. Monaldi4, H. Miisch 5, E. Paul, R. Schattevoy, J. L. Schneider, D. Schramm, R. Wedemeyer Physikalisches Institut der Universitiit Bonn, Bonn, Federal Republic of Germany 36 A. Cassidy, D. G. Cussans, N. Dyce, B. Foster, R. Gilmore, G. P. Heath, H. F. Heath, M. Lancaster, T. J. Llewellyn, J. Malos, C. J. S. Morgado, R. J. Tapper, S. S. Wilson, R. Yoshida H. H. Wills Physics Laboratory, University of Bristol, Bristol, UK 46 R. R. Rau Brookhaven National Laboratory, Upton, L. I., USA 47 M. Arneodo, M. Schioppa, G. Susinno Calabria University, Physics Department, INFN, Cosenza, Italy 39 A. Bernstein, A. Caldwell, I. Gialas, J. A. Parsons, S. Ritz, F. Sciulli 6, P. B. Straub, L. Wai, S. Yang Columbia University, Nevis Labs, Irvington on Hudson, USA 48 P. Borzemski, J. Chwastowski 7, A. Dwura~ny, A. Eskreys, Z. Jakubowski 8 B. Niziot, K. Piotrzkowski, M. Zachara, L. Zawiejski Institute of Nuclear Physics, Cracow, Poland 43 L. Adamczyk, B. Bednarek, K. Eskreys, K. Jelefi, D. Kisielewska, T. Kowalski, E. Rulikowska Zar~bska, L. Suszycki, J. Zaj0c Faculty of Physics, Nuclear T.e.c.h.n.i.q.u.e.s. Academy of Mining, Metallurgy, Cracow, Poland 43 T. Kgdzierski, A. Kotafiski, M. Przybyciefi Jagellonian University, Department of Physics, Poland 43 L. A. T. Bauerdick, U. Behrens, J. K. Bienlein, S. B6ttcher, C. Coldewey, A. Dannemann, G. Drews, P. Erhard 9, M. Flasifiski 10, I. Fleck, R. Gl~iser l. l, p. G6ttlicher, B. Gutjahr, T. Haas, L. Hagge, W. Hain, D. Hasell, H. Hultschig, G. Jahnen 12, p. Joos, M. Kasemann, R. Klanner, W. Koch, L. K6pke, U. K6tz, H. Kowalski, W. Kr6ger, J. Kriiger, J. Labs, A. Ladage, B. L6hr, M. L6we, D. Lfike, J. Mainusch, O. Manczak, M. Momayezi 13, J. S. T. Ng, S. Nickel, D. Notz, K. U. P6snecker 14, M. Rohde, J. Roldfin 15, E. Ros 7, U. Schneekloth, J. Schroeder, W. Schulz, F. Selonke, E. Stiliaris 15, E. Tscheslog 17, T. Tsurugai, W. Vogel 17, G. Wolf, C. Youngman Deutsches Elektronen Synchrotron DESE Hamburg, Federal Republic of Germany H. J. Grabosch, A. Leich, A. Meyer, C. Rethfeldt, S. Schlenstedt DESY Zeuthen, Institut fiir Hochenergiephysik, Zeuthen, Federal Republic of Germany G. Barbagli, A. Francescato, M. Nuti, P. Pelfer University, INFN, Florence, Italy 39 G. Anzivino, R. Casaccia, S. De Pasquale, S. Qian, L. Votano INFN, Laboratori Nazionali di Frascati, Frascati, Italy 39 A. Bamberger, A. Freidhof, T. Poser, S. S61dner Rembold, G. Theisen, T. Trefzger Physikalisches Institut der Universitgit Freiburg, Freiburg, Federal Republic of Germany 36 N. H. Brook, P. J. Bussey, A. T. Doyle, J. R. Forbes, V. A. Jamieson, C. Raine, D. H. Saxon Department of Physics, Astronomy, University of Glasgow, Glasgow, UK 46 H. Brtickmann 18, G. Gloth, U. Holm, H. Kammerlocher, B. Krebs, T. Neumann, K. Wick Hamburg University, 1st Institute of Experimental Physics, Hamburg, Federal Republic of Germany 36 A. Fiirtjes, E. Lohrmann, J. Milewski 19, M. Nakahata 2°, N. Pavel, G. Poelz, W. Schott, J. Terron 15, F. Zetsche Hamburg U.n.i.v.e.r.s.i.t.y. Hnd Institute ofExperimental Physics, Federal Republic of Germany 36 T. C. Bacon, R. Beuselinck, I. Butterworth, E. Gallo, V. L. Harris, D. B. Miller, A. Prinias, J. K. Sedgbeer, A. Vorvolakos, A. Whitfield Imperial College London, High Energy Nuclear Physics Group, London, UK 46 T. Bienz, H. Kreutzmann, U. Mallik, E. McCliment, M. Roco, M. Z. Wang University of lowa, Physics, Astronomy Department, Iowa City, USA 47 P. Cloth, D. Filges Forschungszentrum Jiilich, lnstitut fiir Kernphysik, J.i.i.l.i.c.h. Federal Republic of Germany S. H. An, S. M. Hong, C. O. Kim, T. Y. Kim, S. W. Nam, S. K. Park, M. H. Suh, S. H. Yon Korea University, Seou[, Korea 4] R. Imlay, S. Kartik, H. J. Kim, R. R. McNeil, W. Metcalf, V. K. Nadendla Louisiana State University, Department ~ Physics, Baton Rouge, USA 47 F. Barreiro 21, G. Cases, L. Herv~s 22, L. Labarga 22, j. del Peso, J. F. de Troc6niz 23 U.n.i.v.e.r. Aut6noma Madrid, Depto de Fisica Te6rlca, Madrid, Spain 45 F. Ikraiam, J. K. Mayer, G. R. Smith University of Manitoba, Winnipeg, Manitoba, Canada 34 F. Corriveau, D. J. Gilkinson, D. S. Hanna 6, j. Hartmann, L. W. Hung, J. N. Lira, R. Meijer Drees, J. W. Mitchell, P. M. Patel, L. E. Sinclair, D. G. Stairs, M. S.t. Laurent, R. Ullmann McGill University, Montreal, Quebec, Canada 34, 35 G. L. Bashindzhagyan, P. F. Ermolov, L. K. Gladilin, Y. A. Golubkov, V. A. Kuzmin, E. N. Kuznetsov, A. A. Savin, A. G. Voronin, N. P. Zotov Moscow State University, Institute of Nuclear Pysics, Moscow, Russia 44 S. Bentvelsen, M. Botje, A. Dake, J. Engelen, P. de Jong, M. de Kamps, P. Kooijman, A. Kruse, H. van der Lugt, V. O'Dell, A. Tenner, H. Tiecke, H. Uijterwaa124, M. Vreeswijk, L. Wiggers, E. de Wolf, R. van Woudenberg N1KHEF Amsterdam, Amsterdam, Netherlands 42 B. Bylsma, L. S. Durkin, K. Honscheid, C. Li, T. Y. Ling, K. W. McLean, W. N. Murray, I. H. Park, T. A. Romanowski 25 R. Seidlein Ohio State University, Columbus, OH, USA 47 G. A. Blair, A. Byrne, R. J. Cashmore, A. M. Cooper Sarkar, R. C. E. Devenish, D. M. Gingrich 26, P. M. Hallam Baker 7 N. Harnew, T. Khatri, K. R. Long, P. Luffman, 1. McArthur, P. Morawitz, J. Nash, S. J. P. Smith 27, N. C. Roocroft, F. F. Wilson Department of Physics, University of Oxford, Oxford, UK 46 G. Abbiendi, R. Brugnera, R. Carlin, F. Dal Corso, M. De Giorgi, U. Dosselli, F. Gasparini, S. Limentani, M. Morandin, M. Posocco, L. Stanco, R. Stroili, C. Voci Dipartimento di Fisica dell Universita, INFN, Padova, ltaly 39 J. M. Butterworth, J. Bulmahn, G. Feild, B. Y. Oh 28, j. Whitmore 29 Pennsylvania State University, University Park, USA 48 U. Contino, G. D'Agostini, M. Guida 30, M. Iori, G. Marini, M. Mattioli, A. Nigro Dipartimento di Fisica, Universiffz 'La Sapienza, INFN, Rome, Italy 39 J. C. Hart, N. A. McCubbin, K. Prytz, T. P. Shah, T. L. Short Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, UK 46 E. Barberis, N. Cartiglia, C. Heusch, B. Hubbard, J. Leslie, W. Lockman, K. O'Shaughnessy, H. F. Sadrozinski, A. Seiden, D. Zer Zion University of California, Santa Cruz, USA 47 E. Badura, J. Biltzinger, R. J. Seifert, A. H. Walenta, G. Zech Fachbereich Physik der Universitgit Gesamthochschule Siegen, Siegen, Federal Republic of Germany 36 S. Dagan 31, A. Levy School of Physics, Tel Aviv University, Tel Aviv, Israel 38 T. Hasegawa, M. Hazumi, T. Ishii, S. Kasai 32, M. Kuze, S. Mine, Y. Nagasawa, T. Nagira, M. Nakao, H. Okuno, I. Suzuki, K. Tokushuku, S. Yamada, Y. Yamazaki Institute for Nuclear Study, University of Tokyo, Tokyo, Japan 4° M. Chiba, R. Hamatsu, T. Hirose, S. Kitamura, S. Nagayama, Y. Nakamitsu Tokyo Metropolitan University, Japan 4° R. Cirio, M. Costa, M. I. Ferrero, L. Lamberti, S. Maselli, C. Peroni, A. Solano, A. Staiano Universith di Torino, Dipartimento di Fisica Sperimentale, INFN, Torino, Italy 39 M. Dardo Facultd di Scienze, University of Torino, Alessandria, INFN Sezione di Torino, Torino, Italy 39 D. C. Bailey, D. Bandyopadhyay, F. Benard, S. Bhadra, M. Brkic, B. D. Burow, F. S. Chlebana, M. B. Crombie, G. F. Hartner, G. M. Levman, J. F. Martin, R. S. Orr, J. D. Prentice, C. R. Sampson, G. G. Stairs, R. J. Teuscher, T. S. Yoon University of Toronto, Toronto, O.n.t., Canada 34 F. W. Bullock, C. D. Catterall, J. C. Giddings, T. W. Jones, A. M. Khan, J. B. Lane, P. L. Makkar, D. Shaw, J. Shulman University College London, UK 46 K. Blankenship, J. Kochocki, B. Lu, L. W. Mo Virginia Polytechnic Institute, State University, Blacksburg, VA, USA 48 K. Charchuta, J. Ciborowski, J. Gajewski, G. Grzelak, M. Kasprzak, M. Krzyzanowski, K. Muchorowski, R. J. Nowak, J. M. Pawlak, A. Stopczyfiski, T. Tymieniecka, R. Walczak, A. K. Wr6blewski, J. A. Zakrzewski, A. F. Zarnecki Warsaw University, Institute of Experimental Physics, Warsaw, Poland 43 M. Adamus Institute for Nuclear Studies, Poland 43 H. Abramowicz 19, y. Eisenberg, C. Glasman 33, U. Karshon 31, A. Montag 3J, D. Revel, A. Shapira Weizmann Institute, Nuclear Physics Department, Rehovot, Israel 37 C. Foudas, C. Fordham, R. J. Loveless, A. Goussiou, I. Ali, B. Behrens, S. Dasu, D. D. Reeder, W. H. Smith, S. Silverstein University of Wisconsin, Madison, W1, USA 47 W. R. Frisken, K. M. Furutani, Y. Iga York University, North York, O.n.t., MARI, Stefano Maria, ZEUS Collaboration M., Derrick, D., Krakauer, S., Magill, B., Musgrave, J., Repond, S., Repond, R., Stanek, R. L., Talaga, J., Thron Argonne National Laboratory, Argonne, Il, USA 47 F., Arzarello, R., Ayad l, G., Bari, M., Basile, L., Bellagamba, D., Boscherini, A., Bruni, G., Bruni, P., Bruni, G., Cara Romeo, G., Castellini 2, M., Chiarini, L., Cifarelli, F., Cindolo, F., Ciralli, A., Contin, S., D'Auria, C., Del Papa, F., Frasconi, P., Giusti, G., Iacobucci, G., Laurenti, G., Levi, Q., Lin, B., Lisowski, G., Maccarrone, A., Margotti, T., Massam, R., Nania, C., Nemoz, F., Palmonari, G., Sartorelli, R., Timellini, Y., Zamora Garcia l, A., Zichichi University, Infn, Bologna, Bologna, Italy 39 A., Bargende, J., Crittenden, K., Desch, B., Diekmann, T., Doeker, A., Frey, M., Geert, G., Geitz, H., Hartmann, D., Haun, K., Heinloth, E., Hilger, H. P., Jakob, S., Kramarczyk, M., Kiickes 3, A., Ma, S., Mengel, J., Mollen, D., Monaldi4, H., Miisch 5, E., Paul, R., Schattevoy, J. L., Schneider, D., Schramm, R., Wedemeyer Physikalisches Institut der Universitiit Bonn, Bonn, Federal Republic of Germany 36 A., Cassidy, D. G., Cussan, N., Dyce, B., Foster, R., Gilmore, G. P., Heath, H. F., Heath, M., Lancaster, T. J., Llewellyn, J., Malo, C. J. S., Morgado, R. J., Tapper, S. S., Wilson, R. Yoshida H. H., Wills Physics Laboratory, University of, Bristol, Bristol, UK 46 R. R., Rau Brookhaven National Laboratory, Upton, L. I., Ny, USA 47 M., Arneodo, M., Schioppa, G., Susinno Calabria University, Physics, Department, Infn, Cosenza, Italy 39 A., Bernstein, A., Caldwell, I., Giala, J. A., Parson, S., Ritz, F., Sciulli 6, P. B., Straub, L., Wai, S., Yang Columbia University, Nevis, Lab, Irvington on, Hudson, USA 48 P., Borzemski, J., Chwastowski 7, A., Dwura~ny, A., Eskrey, Z. Jakubowski 8 B., Niziot, K., Piotrzkowski, M., Zachara, L., Zawiejski Institute of Nuclear Physic, Cracow, Poland 43 L., Adamczyk, B., Bednarek, K., Eskrey, K., Jelefi, D., Kisielewska, T., Kowalski, E., Rulikowska Zar~bska, L., Suszycki, J., Zaj0c Faculty of Physic, Academy of Mining, Nuclear T. e. c. h. n. i. q. u. e. s., Metallurgy, Cracow, Poland 43 T., Kgdzierski, A., Kotafiski, M., Przybyciefi Jagellonian University, Department of, Physic, Poland 43 L. A. T., Bauerdick, U., Behren, J. K., Bienlein, S., B6ttcher, C., Coldewey, A., Dannemann, G., Drew, P., Erhard 9, M., Flasifiski 10, I., Fleck, R. Gl~iser l., L, P., G6ttlicher, B., Gutjahr, T., Haa, L., Hagge, W., Hain, D., Hasell, H., Hultschig, G., Jahnen 12, P., Joo, M., Kasemann, R., Klanner, W., Koch, L., K6pke, U., K6tz, H., Kowalski, W., Kr6ger, J., Kriiger, J., Lab, A., Ladage, B., L6hr, M., L6we, D., Lfike, J., Mainusch, O., Manczak, M., Momayezi 13, J. S. T., Ng, S., Nickel, D., Notz, K. U., P6snecker 14, M., Rohde, J., Roldfin 15, E., Ros 7, U., Schneekloth, J., Schroeder, W., Schulz, F., Selonke, E., Stiliaris 15, E., Tscheslog 17, T., Tsurugai, W., Vogel 17, G., Wolf, C., Youngman Deutsches Elektronen Synchrotron DESE Hamburg, Federal Republic of Germany H. J., Grabosch, A., Leich, A., Meyer, C., Rethfeldt, S., Schlenstedt DESY Zeuthen, Institut fiir, Hochenergiephysik, Zeuthen, Federal Republic of Germany G., Barbagli, A., Francescato, M., Nuti, P., Pelfer University, Infn, Florence, Italy 39 G., Anzivino, R., Casaccia, S., De Pasquale, S., Qian, L., Votano INFN, Laboratori Nazionali di, Frascati, Frascati, Italy 39 A., Bamberger, A., Freidhof, T., Poser, S., S61dner Rembold, G., Theisen, T., Trefzger Physikalisches Institut der Universitgit Freiburg, Freiburg, Federal Republic of Germany 36 N. H., Brook, P. J., Bussey, A. T., Doyle, J. R., Forbe, V. A., Jamieson, C., Raine, D. H., Saxon Department of Physic, Astronomy, University of, Glasgow, Glasgow, UK 46 H., Brtickmann 18, G., Gloth, U., Holm, H., Kammerlocher, B., Kreb, T., Neumann, K., Wick Hamburg University, 1st Institute of Experimental, Physic, Hamburg, Federal Republic of Germany 36 A., Fiirtje, E., Lohrmann, J., Milewski 19, M., Nakahata 2°, N., Pavel, G., Poelz, W., Schott, J., Terron 15, Hnd Institute ofExperimental Physics, F. Zetsche Hamburg U. n. i. v. e. r. s. i. t. y., Federal Republic of Germany 36 T. C., Bacon, R., Beuselinck, I., Butterworth, E., Gallo, V. L., Harri, D. B., Miller, A., Prinia, J. K., Sedgbeer, A., Vorvolako, A., Whitfield Imperial College London, High Energy Nuclear Physics, Group, London, UK 46 T., Bienz, H., Kreutzmann, U., Mallik, E., Mccliment, M., Roco, M. Z., Wang University of lowa, Physics, Astronomy, Department, Iowa, City, USA 47 P., Cloth, D., Filges Forschungszentrum Jiilich, lnstitut fiir, Kernphysik, J. i. i. l. i. c. h. Federal Republic of Germany S. H., An, S. M., Hong, C. O., Kim, T. Y., Kim, S. W., Nam, S. K., Park, M. H., Suh, S. H., Yon Korea University, Seou[, Korea 4] R., Imlay, S., Kartik, H. J., Kim, R. R., Mcneil, W., Metcalf, V. K., Nadendla Louisiana State University, Department, ~ Physic, Baton, Rouge, La, USA 47 F., Barreiro 21, G., Case, L., Herv~s 22, L., Labarga 22, J., del Peso, Aut6noma Madrid, J. F. de Troc6niz 23 U. n. i. v. e. r., Depto de Fisica, Te6rlca, Madrid, Spain 45 F., Ikraiam, J. K., Mayer, G. R., Smith University of Manitoba, Winnipeg, Manitoba, Canada 34 F., Corriveau, D. J., Gilkinson, D. S., Hanna 6, J., Hartmann, L. W., Hung, J. N., Lira, R., Meijer Dree, J. W., Mitchell, P. M., Patel, L. E., Sinclair, D. G., Stair, Laurent, M. S. t., R., Ullmann McGill University, Montreal, Quebec, Canada, 34, 35 G. L., Bashindzhagyan, P. F., Ermolov, L. K., Gladilin, Y. A., Golubkov, V. A., Kuzmin, E. N., Kuznetsov, A. A., Savin, A. G., Voronin, N. P., Zotov Moscow State University, Institute of Nuclear, Pysic, Moscow, Russia 44 S., Bentvelsen, M., Botje, A., Dake, J., Engelen, P., de Jong, M., de Kamp, P., Kooijman, A., Kruse, H., van der Lugt, V., O'Dell, A., Tenner, H., Tiecke, H., Uijterwaa124, M., Vreeswijk, L., Wigger, E., de Wolf, R., van Woudenberg N1KHEF Amsterdam, Amsterdam, Netherlands 42 B., Bylsma, L. S., Durkin, K., Honscheid, C., Li, T. Y., Ling, K. W., Mclean, W. N., Murray, I. H., Park, T. A. Romanowski 25 R., Seidlein Ohio State University, Columbus, Oh, USA 47 G. A., Blair, A., Byrne, R. J., Cashmore, A. M., Cooper Sarkar, R. C. E., Devenish, D. M., Gingrich 26, P. M. Hallam Baker 7 N., Harnew, T., Khatri, K. R., Long, P., Luffman, 1., Mcarthur, P., Morawitz, J., Nash, S. J. P., Smith 27, N. C., Roocroft, F. F., Wilson Department of Physic, University of, Oxford, Oxford, UK 46 G., Abbiendi, R., Brugnera, R., Carlin, F., Dal Corso, M., De Giorgi, U., Dosselli, F., Gasparini, S., Limentani, M., Morandin, M., Posocco, L., Stanco, R., Stroili, C., Voci Dipartimento di Fisica dell Universita, Infn, Padova, ltaly 39 J. M., Butterworth, J., Bulmahn, G., Feild, B. Y., Oh 28, J., Whitmore 29 Pennsylvania State University, University, Park, Pa, USA 48 U., Contino, G., D'Agostini, M., Guida 30, M., Iori, Mari, Stefano Maria, G., Marini, M., Mattioli, A., Nigro Dipartimento di Fisica, Universiffz 'La, Sapienza, Infn, Rome, Italy 39 J. C., Hart, N. A., Mccubbin, K., Prytz, T. P., Shah, T. L., Short Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, UK 46 E., Barberi, N., Cartiglia, C., Heusch, B., Hubbard, J., Leslie, W., Lockman, K., O'Shaughnessy, H. F., Sadrozinski, A., Seiden, D., Zer Zion University of California, Santa, Cruz, Ca, USA 47 E., Badura, J., Biltzinger, R. J., Seifert, A. H., Walenta, G., Zech Fachbereich Physik der Universitgit Gesamthochschule Siegen, Siegen, Federal Republic of Germany 36 S., Dagan 31, A., Levy School of Physic, Tel Aviv, University, Tel, Aviv, Israel 38 T., Hasegawa, M., Hazumi, T., Ishii, S., Kasai 32, M., Kuze, S., Mine, Y., Nagasawa, T., Nagira, M., Nakao, H., Okuno, I., Suzuki, K., Tokushuku, S., Yamada, Y., Yamazaki Institute for Nuclear Study, University of, Tokyo, Tokyo, Japan 4° M., Chiba, R., Hamatsu, T., Hirose, S., Kitamura, S., Nagayama, Y., Nakamitsu Tokyo Metropolitan University, Japan 4° R., Cirio, M., Costa, M. I., Ferrero, L., Lamberti, S., Maselli, C., Peroni, A., Solano, A., Staiano Universith di Torino, Dipartimento di Fisica, Sperimentale, Infn, Torino, Italy 39 M., Dardo Facultd di Scienze, University of, Torino, Alessandria, INFN Sezione di, Torino, Torino, Italy 39 D. C., Bailey, D., Bandyopadhyay, F., Benard, S., Bhadra, M., Brkic, B. D., Burow, F. S., Chlebana, M. B., Crombie, G. F., Hartner, G. M., Levman, J. F., Martin, R. S., Orr, J. D., Prentice, C. R., Sampson, G. G., Stair, R. J., Teuscher, T. S., Yoon University of Toronto, Toronto, O. n. t., Canada 34 F. W., Bullock, C. D., Catterall, J. C., Gidding, T. W., Jone, A. M., Khan, J. B., Lane, P. L., Makkar, D., Shaw, J., Shulman University College London, UK 46 K., Blankenship, J., Kochocki, B., Lu, L. W., Mo Virginia Polytechnic Institute, State, University, Blacksburg, Va, USA 48 K., Charchuta, J., Ciborowski, J., Gajewski, G., Grzelak, M., Kasprzak, M., Krzyzanowski, K., Muchorowski, R. J., Nowak, J. M., Pawlak, A., Stopczyfiski, T., Tymieniecka, R., Walczak, A. K., Wr6blewski, J. A., Zakrzewski, A. F., Zarnecki Warsaw University, Institute of Experimental, Physic, Warsaw, Poland 43 M., Adamus Institute for Nuclear Studie, Poland 43 H., Abramowicz 19, Y., Eisenberg, C., Glasman 33, U., Karshon 31, A., Montag 3J, D., Revel, A., Shapira Weizmann Institute, Nuclear Physics, Department, Rehovot, Israel 37 C., Fouda, C., Fordham, R. J., Lovele, A., Goussiou, I., Ali, B., Behren, S., Dasu, D. D., Reeder, W. H., Smith, S., Silverstein University of Wisconsin, Madison, W1, USA 47 W. R., Frisken, K. M., Furutani, Y., Iga York University, North, York, and O. n., T.
Subjects: Physics, Nuclear and High Energy Physics, ZEUS (particle detector), Spectrometer, Physics::Instrumentation and Detectors, DESY, HERA, Particle detector, Calorimeter, Nuclear physics, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Instrumentation, Beam (structure)
Abstract: A fully compensating uranium—scintillator calorimeter was constructed for the ZEUS detector at HERA. Several of the barrel calorimeter modules were subjected to beam tests at Fermilab before shipping them to DESY for installation. The calibrations of the modules used beams of electrons and hadrons, measuring the uniformity of the response, and checking the resolution. The runs also provided opportunity to test a large fraction of the actual ZEUS calorimeter readout system in an integrated beam environment more than one year before HERA turn on. The experiment utilized two computer controlled mechanical structures, one of which was capable of holding up to four modules in order to study shower containment, and a magnetic spectrometer with a high resolution beam tracking system. During two running periods, beams of 6 to 110 GeV containing e, μ, π, and p were used. The results show energy resolutions of 35%/ E for hadrons and 19%/ E for electrons, uniformities at the 1% level, energy nonlinearity less than 1%, and equal response for electrons and hadrons.
Published: 1993

46. Proton irradiation on AC-coupled silicon microstrip detectors

Author: H. Iwasaki, Hans Ziock, A. Webster, H. Ohyama, Susumu Terada, N. Ujiie, D. Coupal, M. Wilder, Fujio Hinode, Masato Higuchi, Ryuichi Takashima, B. Rowe, T. Kondo, M. Yoshikawa, T. Handa, M. Frautschi, Takashi Kohriki, Y. Unno, K. O'Shaughnessy, A. Palounek, S. Kobayashi, T. Ohsugi, N. Tamura, T. Pal, Y. Iwata, A. Murakami, Motomasa Daigo, and Takafumi Ohmoto
Subjects: Capacitive coupling, Nuclear and High Energy Physics, Materials science, Proton, Silicon, Passivation, Annealing (metallurgy), business.industry, chemistry.chemical_element, Fluence, Particle detector, Semiconductor detector, Nuclear Energy and Engineering, chemistry, Optoelectronics, Irradiation, Electrical and Electronic Engineering, business, Voltage
Abstract: To test the radiation tolerance of full-size detectors, four large-area AC-coupled single-sided silicon microstrip detectors were fabricated. The detectors had a size of 6 cm/spl times/3.4 cm and were made out of a 300 /spl mu/m thick, high-resistivity, n-type silicon, simulating the p-side of the double-sided silicon microstrip detectors being developed. The AC coupling layer had either a single layer of SiO/sub 2/ or double layers of SiO/sub 2/ and Si/sub 3/N/sub 4/, in combination with the surface passivation of SiO/sub 2/ or Si/sub 3/N/sub 4/. The detectors were irradiated at room temperature by 500 MeV protons at TRIUMF to a fluence of 5.7/spl times/10/sup 13/ protons/cm/sup 2/, promptly stored at 0/spl deg/C after irradiation, and periodically measured over the following year. The full depletion voltages showed a substantial annealing and a gradual anti-annealing. The result was compared with the predictions of existing damage parameterization. Time variation of other characteristics, such as leakage current, interstrip and coupling capacitances, and strip-edge microdischarges was also followed. >
Published: 2002
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47. Tests of the radiation hardness of silicon strip detectors under neutron, proton, and gamma irradiation

Author: A. Seiden, D. Joyce, W. W. Kinnison, S. A. Jerger, E. Spencer, B. Hubbard, K. O'Shaughnessy, J. A. J. Matthews, J. Leslie, W.A. Rowe, H. F.W. Sadrozinski, D. Pitzl, D. Skinner, K. Holzscheiter, Hans Ziock, J. DeWitt, D. M. Lee, N. Cartiglia, C. Lietzke, J. S. Kapustinsky, W.C. Sailor, D.E. Dorfan, Stephen Wimpenny, J. G. Boissevain, Walter F. Sommer, W. E. Sondheim, Phillip D. Ferguson, J. Ellison, and R. Wagner
Subjects: Superconducting Super Collider, Nuclear physics, Physics, Proton, Silicon, chemistry, Physics::Instrumentation and Detectors, Gamma ray, Radiation damage, chemistry.chemical_element, Neutron, Relativistic Heavy Ion Collider, Radiation hardening
Abstract: Summary form only given, as follows. As part of a program to develop silicon central tracking systems for the next generation of high-energy, high-luminosity accelerators such as the Superconducting Super Collider and the Relativistic Heavy Ion Collider, the effects of radiation damage in silicon detectors are being studied in detail. Results on neutron and proton irradiations at Los Alamos National Laboratory and gamma ray irradiations at UC Santa Cruz have been obtained. The devices being tested include both single-sided and double-sided silicon strip detectors, as well as test structures. Results of measurements of leakage current, acceptor state creation, charge trapping, pulse shapes, and changes in interstrip resistance as a function dose and operating temperature have been obtained. >
Published: 2002
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48. Dalitz Plot Analysis of the DecayD+→K−π+π+and Indication of a Low-Mass ScalarKπResonance

Author: dos Reis Ac, S. M. Yang, J. Magnin, S. Yoshida, K. C. Peng, A. K. Tripathi, S. MayTal-Beck, P.A. Kasper, A.M. Halling, D. A. Sanders, J. C. Anjos, Simon Kwan, K. O'Shaughnessy, L. Perera, S. Takach, H.S. Carvalho, C. James, Alberto Santoro, K. Thorne, A. Álvarez Fernández, N. Witchey, J. Wiener, B. Lundberg, A. J. Slaughter, S. Banerjee, C. Göbel, D. C. Langs, L. M. Cremaldi, E. Wolin, C. Zhang, J.J. Reidy, A. J. Schwartz, D. Mihalcea, S. Radeztsky, R. A. Sidwell, B. Quinn, A. Nguyen, N. W. Reay, J. Leslie, I. Bediaga, A. Napier, G. Herrera, R. Zaliznyak, K. Denisenko, R. H. Milburn, G. Blaylock, M. V. Purohit, de Mello Neto, M. Sheaff, P. Gagnon, J. A. Appel, S. Amato, D. J. Summers, K. Gounder, A.K.S. Santha, N. R. Stanton, D. Yi, T. Carter, R. Weiss-Babai, Solano Salinas Cj, G. F. Fox, C. L. Darling, A. Massafferri, de Miranda Jm, B. T. Meadows, Kevin Stenson, P. R. Burchat, S. Watanabe, R. A. Burnstein, A. Rafatian, A.B. d'Oliveira, E.M. Aitala, G. Hurvits, S. B. Bracker, R. J. Stefanski, N. K. Copty, Sokoloff, Daniel Ashery, H. A. Rubin, and S. Devmal
Subjects: Physics, Particle decay, Particle physics, Pion, Meson, Hadron, General Physics and Astronomy, Resonance, Dalitz plot, Elementary particle, Boson
Abstract: We study the Dalitz plot of the decay ${D}^{+}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{+}$ with a sample of 15090 events from Fermilab experiment E791. Modeling the decay amplitude as the coherent sum of known $K\ensuremath{\pi}$ resonances and a uniform nonresonant term, we do not obtain an acceptable fit. If we allow the mass and width of the ${K}_{0}^{*}(1430)$ to float, we obtain values consistent with those from PDG but the ${\ensuremath{\chi}}^{2}$ per degree of freedom of the fit is still unsatisfactory. A good fit is found when we allow for the presence of an additional scalar resonance, with mass $797\ifmmode\pm\else\textpm\fi{}19\ifmmode\pm\else\textpm\fi{}43\text{ }\mathrm{M}\mathrm{e}\mathrm{V}/{\mathrm{c}}^{\mathrm{2}}$ and width $410\ifmmode\pm\else\textpm\fi{}43\ifmmode\pm\else\textpm\fi{}87\text{ }\mathrm{M}\mathrm{e}\mathrm{V}/{\mathrm{c}}^{2}$. The mass and width of the ${K}_{0}^{*}(1430)$ become $1459\ifmmode\pm\else\textpm\fi{}7\ifmmode\pm\else\textpm\fi{}5\text{ }\mathrm{M}\mathrm{e}\mathrm{V}/{\mathrm{c}}^{\mathrm{2}}$ and $175\ifmmode\pm\else\textpm\fi{}12\ifmmode\pm\else\textpm\fi{}12\text{ }\mathrm{M}\mathrm{e}\mathrm{V}/{\mathrm{c}}^{\mathrm{2}}$, respectively. Our results provide new information on the scalar sector in hadron spectroscopy.
Published: 2002
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49. Differential cross sections, charge production asymmetry, and spin-density matrix elements for D*(2010) produced in 500 GeV/c pi^- nucleon interactions

Author: J.J. Reidy, A. J. Slaughter, R. A. Burnstein, Kevin Stenson, A. Rafatian, J. A. Appel, R. Zaliznyak, D. J. Summers, K. Gounder, J. M. De Miranda, G. Hurvits, C. James, P.A. Kasper, N. R. Stanton, A. Massafferri, A. Nguyen, C. Zhang, C. J. Solano Salinas, M. V. Purohit, S. MayTal-Beck, K. O'Shaughnessy, B. T. Meadows, J. R. T. de Mello Neto, M. D. Sokoloff, P. R. Burchat, A.M. Halling, S. M. Yang, N. Witchey, A.K.S. Santha, H.S. Carvalho, N. W. Reay, J. Leslie, A.K. Tripathi, S. Yoshida, A. Fernandez, J. Magnin, Alberto Santoro, S. Takach, D. C. Langs, J. C. Anjos, T. Carter, S. B. Bracker, Simon Kwan, G. F. Fox, G. Blaylock, K. C. Peng, R. H. Milburn, P. Gagnon, R. A. Sidwell, S. Radeztsky, M. Sheaff, B. Quinn, S. Watanabe, B. Lundberg, Sudeshna Banerjee, C. L. Darling, A. J. Schwartz, I. Bediaga, D. Mihalcea, S. Amato, A. C. dos Reis, L. M. Cremaldi, E. Wolin, A.B. d'Oliveira, E.M. Aitala, D. A. Sanders, G. Herrera, K. Thorne, S. Devmal, L.P. Perera, A. Napier, K. Denisenko, D. Yi, R. Weiss-Babai, J. Wiener, C. Göbel, N. K. Copty, R. J. Stefanski, Daniel Ashery, and H. A. Rubin
Subjects: Physics, Scattering cross-section, Nuclear and High Energy Physics, media_common.quotation_subject, FOS: Physical sciences, Polarization (waves), Asymmetry, High Energy Physics - Experiment, Nuclear physics, symbols.namesake, High Energy Physics - Experiment (hep-ex), Transverse momentum, symbols, Feynman diagram, High Energy Physics::Experiment, Fermilab, Atomic physics, Spin density, Nucleon, Nuclear Experiment, media_common
Abstract: We report differential cross sections for the production of D*(2010) produced in 500 GeV/c pi^- nucleon interactions from experiment E791 at Fermilab, as functions of Feynman-x (x_F) and transverse momentum squared (p_T^2). We also report the D* +/- charge asymmetry and spin-density matrix elements as functions of these variables. Investigation of the spin-density matrix elements shows no evidence of polarization. The average values of the spin alignment are \eta= 0.01 +- 0.02 and -0.01 +- 0.02 for leading and non-leading particles, respectively., Comment: LaTeX2e (elsart.cls). 13 pages, 6 figures (eps files). Submitted to Physics Letters B
Published: 2002

50. Dalitz plot analysis of the decay D(+)--K(-)pi(+)pi(+) and indication of a low-mass scalar Kpi resonance

Author: E M, Aitala, S, Amato, J C, Anjos, J A, Appel, D, Ashery, S, Banerjee, I, Bediaga, G, Blaylock, S B, Bracker, P R, Burchat, R A, Burnstein, T, Carter, H S, Carvalho, N K, Copty, L M, Cremaldi, C, Darling, K, Denisenko, S, Devmal, A, Fernandez, G F, Fox, P, Gagnon, C, Göbel, K, Gounder, A M, Halling, G, Herrera, G, Hurvits, C, James, P A, Kasper, S, Kwan, D C, Langs, J, Leslie, B, Lundberg, J, Magnin, A, Massafferri, S, MayTal-Beck, B, Meadows, J R T, de Mello Neto, D, Mihalcea, R H, Milburn, J M, de Miranda, A, Napier, A, Nguyen, A B, d'Oliveira, K, O'Shaughnessy, K C, Peng, L P, Perera, M V, Purohit, B, Quinn, S, Radeztsky, A, Rafatian, N W, Reay, J J, Reidy, A C, dos Reis, H A, Rubin, D A, Sanders, A K S, Santha, A F S, Santoro, A J, Schwartz, M, Sheaff, R A, Sidwell, A J, Slaughter, M D, Sokoloff, C J, Solano Salinas, N R, Stanton, R J, Stefanski, K, Stenson, D J, Summers, S, Takach, K, Thorne, A K, Tripathi, S, Watanabe, R, Weiss-Babai, J, Wiener, N, Witchey, E, Wolin, S M, Yang, D, Yi, S, Yoshida, R, Zaliznyak, and C, Zhang
Abstract: We study the Dalitz plot of the decay D(+)--K(-)pi(+)pi(+) with a sample of 15090 events from Fermilab experiment E791. Modeling the decay amplitude as the coherent sum of known Kpi resonances and a uniform nonresonant term, we do not obtain an acceptable fit. If we allow the mass and width of the K(*)(0)(1430) to float, we obtain values consistent with those from PDG but the chi(2) per degree of freedom of the fit is still unsatisfactory. A good fit is found when we allow for the presence of an additional scalar resonance, with mass 797+/-19+/-43 MeV/c(2) and width 410+/-43+/-87 MeV/c(2). The mass and width of the K(*)(0)(1430) become 1459+/-7+/-5 MeV/c(2) and 175+/-12+/-12 MeV/c(2), respectively. Our results provide new information on the scalar sector in hadron spectroscopy.
Published: 2002

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