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1. The ring imaging detector for CLEO III The CLEO III Ring Imaging Cherenkov detector

Author

Sheldon Stone, F. Azfar, V. Fadeyev, D. He, S. Alam, X. Xing, Yuichi Kubota, D. Cinabro, G. Viehhauser, Sacha E Kopp, R. Mountain, Marina Artuso, A. Efimov, S. Schuh, T. E. Coan, Tomasz Skwarnicki, I. Volobouev, S. Timm, J. Staeck, L. P. Perera, A. Smith, Ron Poling, and S. Anderson

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Hadron, Detector, Ring (chemistry), Particle identification, Ring-imaging Cherenkov detector, law.invention, Nuclear physics, law, CLEO, High Energy Physics::Experiment, B meson, Collider, Instrumentation
Abstract

The CLEO detector is undergoing major improvements in conjunction with a high luminosity upgrade of the CESR e+e− collider. A novel element is a state of the art particle identification system, based on a proximity focused Ring Imaging Cherenkov detector. This detector will provide an excellent hadron identification at all the momenta relevant to the study of the decays of B mesons produced at the ϒ(4S) resonance. Some features unique to our design will be discussed together with some results achieved on individual components.

Published
1998

2. Production and decay of the Ds1 (2536)+

Author

G. Masek, S. Nakanishi, Juliet Ritchie Patterson, E. H. Thorndike, K. Honscheid, M. Procario, W. R. Ross, D. Coppage, J. P. Alexander, C. R. Sun, W. T. Ford, I. P.J. Shipsey, J. S. Miller, Hubert Kroha, R. D. Kass, R. S. Galik, P. Rubin, M. Thulasidas, J. Masui, M. Worris, M. Ogg, G. Zhu, N. Katayama, Michael Wood, D. S. Akerib, C. O'Grady, A. J. Weinstein, M. Sapper, D. M. Coffman, H. A. Cho, R. Wang, T. K. Nelson, G. Eigen, B. K. Heltsley, H. N. Nelson, T. Skwarnicki, D. L. Hartill, R. Ehrlich, M. Daoudi, Vivek Jain, P. C. Kim, F. Butler, D. L. Kreinick, S. L. Jones, Maurice Garcia-Sciveres, S. Henderson, C. R. Ng, K. K. Gan, Y. Skovpen, B. Geiser, J. Mevissen, M. M. Zoeller, D. Perticone, V. Savinov, Michael S. Witherell, B. Nemati, F. Morrow, J. Kandaswamy, J. Urheim, Daniela Bortoletto, R. Malchow, K. Lingel, Yoram Rozen, F. Würthwein, M. Sivertz, N. Copty, J. Dominick, S. Roberts, R. Kutschke, Philip Baringer, John Yelton, M. L. Kelly, P. N. Wang, S. Ball, D. Besson, T. Miao, H. Worden, M. Battle, T. Liu, C. Bebek, D. Peterson, S. W. Gray, K. Sparks, D. G. Cassel, M. Modesitt, H. Tajima, H. Yamamoto, M. Lohner, M. Lambrecht, R. Ammar, A. P. Freyberger, Ryszard Stroynowski, H. P. Paar, R. Fulton, D. Cinabro, George R. Kalbfleisch, H. Severini, S. Chan, Ron Poling, Daniel Schmidt, S. Patton, J. G. Smith, Sheldon Stone, E. Nordberg, Jeffrey Richman, D. Acosta, Richard Wilson, Paul Avery, Daniel Johnson, G. S. Ludwig, P. Rankin, K. Cho, Marina Artuso, N. B. Mistry, J. Snow, Z. Egyed, D. Riley, J. J. O'Neill, Chunjie Wang, S. F. Schaffner, P. S. Drell, J. Bartelt, Paul Sheldon, Yuichi Kubota, Jorge Luis Rodriguez, D. F. Cowen, G. Crawford, M. Saulnier, S. Sanghera, A. Bean, D. Sperka, N. Hancock, R. Kennett, H. Kagan, B. Gittelman, V. Romero, J. K. Nelson, I. J. Kim, S. Yang, R. Davis, R. J. Morrison, Mats A Selen, A. J. Sadoff, Christopher G. White, P. L. Wang, M. Athanas, J. Gronberg, N. Horwitz, M. Chadha, Karl Berkelman, D. H. Miller, X. Fu, M. Sung, N. Kwak, R. Stephens, S. E. Csorna, C. D. Jones, S. Menary, K. Kinoshita, R. L. McIlwain, B. Ong, M. Goldberg, A. V. Barnes, S. Schrenk, Ha Lam, M. S. Alam, J. Whitmore, Jungil Lee, M. Lattery, G. Vasseur, F. Muheim, D. N. Brown, S. Playfer, B. C. Barish, G. C. Moneti, E. I. Shibata, R. Ballest, T. E. Browder, P. Wilson, and P. Skubic

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Fragmentation (mass spectrometry), Electron–positron annihilation, Fragmentation function, Parity (physics), Atomic physics, Helicity
Abstract

Using the CLEO-II detector at CESR, we have observed the Ds1(2536)+ in the decay modes D s1 + →D ∗0 K + and D ∗+ K S + , and measured its fragmentation and production ratios. Using the helicity angle distribution of the daugter D ∗0 , we obtain new evidence for the assignment of 1+ for the spin and parity of the Ds1+. We also set upper limits on the decays D s1 + →D s ∗+ λ, D 0 K + and D+Ks0.

Published
1993

3. The CLEO II detector

Author

H. Worden, M. Lambrecht, B. Nemati, K. K. Gan, C. O'Grady, A. J. Weinstein, J. Urheim, Tomasz Skwarnicki, H. N. Nelson, Ian Shipsey, J. Mevissen, F. Morrow, D. Besson, R. DeSalvo, D. Perticone, N. Kwak, R. Fulton, J. Masui, J. Kandaswamy, E. Nordberg, Jeffrey Richman, T. E. Browder, G. S. Ludwig, Daniela Bortoletto, T. Letson, Juliet Ritchie Patterson, G. C. Moneti, Yoram Rozen, F. Würthwein, M. Pisharody, P. Lubrano, Karl Berkelman, P. Haas, M. Modesitt, P. Wilson, James Mueller, Barry C. Barish, G. Kalbfleisch, E. I. Shibata, Brian Heltsley, X. Fu, C. Bebek, Philip Baringer, D. M. Coffman, W. C. Li, J. P. Alexander, R. L. McIlwain, D. Peterson, W. Y. Chen, A. P. Freyberger, Vivek Jain, T. Jensen, P. Skubic, W. M. Yao, S. Schrenk, V. Sharma, D. L. Kreinick, R. Holmes, R. Ehrlich, T. Haupt, A. Jawahery, D. Coppage, Hubert Kroha, F. M. Pipkin, J. Wolinski, J. G. Smith, M. Daoudi, S. Ro, K. Sparks, Zuhe Bian, Ryszard Stroynowski, D. Xiao, J. Dominick, M. Sung, D. N. Brown, Alice Bean, D. Chen, C. R. Sun, W. T. Ford, R. D. Kass, H. Yamamoto, Ha Lam, M. Battle, P. Rankin, K. Honschoid, M. Worris, M. Sapper, J. S. Miller, David Miller, R. J. Morrison, Mats A Selen, M. Procario, R. S. Galik, P. Rubin, M. Thulasidas, S. E. Csorna, H. Tajima, A. J. Sadoff, J. Whitmore, R. T. Giles, Ian Brock, N. Katayama, Chunjie Wang, R. Kowalewski, Marina Artuso, Xinchou Lou, N. Horwitz, M. Chadha, M. S. Alam, D. S. Akerib, G. Eigen, P. Avery, Ron Poling, K. Kinoshita, R. Ammar, Daniel Schmidt, E. Blucher, D. L. Hartill, G. Zhu, Themistocles Bowcock, Persis S. Drell, R. Namjoshi, C. R. Ng, N. B. Mistry, B. Geiser, Sheldon Stone, P. N. Wang, D. F. Cowen, R. Davis, Elliott Cheu, P. C. Kim, S. Henderson, G. Crawford, C. D. Jones, Daniel Johnson, M. Lohner, F. Butler, R. Malchow, D. G. Cassel, John Yelton, M. Goldberg, M. L. Kelly, Jorge Luis Rodriguez, S. W. Gray, M. Saulnier, Richard Wilson, Harris Kagan, M. M. Zoeller, Murdock Gilchriese, M. S. Witherell, B. Gittelman, P. L. Wang, E. H. Thorndike, J. Snow, I. J. Kim, S. Nandi, D. Riley, S. F. Schaffner, Yuichi Kubota, Maurice Garcia-Sciveres, J. K. Nelson, and K. Lingel

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Physics::Instrumentation and Detectors, Detector, Hadron, Tracking (particle physics), Particle identification, Charged particle, Nuclear physics, CLEO, High Energy Physics::Experiment, Cornell Electron Storage Ring, Instrumentation
Abstract

The new detector for data recording by the CLEO collaboration at the Cornell Electron Storage Ring is described. This detector has been designed to optimize studying e+ e− annihilation into hadronic matter at a total energy of 10 GeV. It consists of high precesion charged particle tracking chambers and an electromagnetic calorimeter together with systems for particle identification. The design of the detector and its performance over the first year and a half of operation are presented.

Published
1992

4. Ruling out exotic models of b quark decay

Author

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

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

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

Published
1983

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

Author

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

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

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

Published
1984

6. Electron identification using synchrotron radiation

Author

Kazuo Abe, N.M. Shaw, H. Harada, Ron Poling, Yuki Fujii, E. H. Thorndike, and Sarah Catherine Eno

Subjects
Physics, Nuclear and High Energy Physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Detector, Synchrotron radiation, Electron, law.invention, Optics, Nuclear magnetic resonance, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider, business, Instrumentation
Abstract

We discuss the application to collider experiments of electron identification by the detection of synchrotron radiation. The design of the synchrotron radiation detector being constructed for the AMY experiment at TRISTAN is described, and results of simulation studies of the anticipated performance of this device are reported.

Published
1988

7. Characteristics of electromagnetic shower sampling counters

Author

Sheldon Stone, R. Ehrlich, E. H. Thorndike, Ron Poling, and J. S. Poucher

Subjects
Physics, Shower, Optics, Physics::Instrumentation and Detectors, business.industry, Resolution (electron density), Detector, Radiator (engine cooling), Sampling (statistics), General Medicine, Scintillator, business, Beam energy
Abstract

We report an experimental investigation of the properties of electro magnetic shower detectors composed of alternate layers of plastic scintillator and radiator. The various contributions to the pulse-height resolution are characterized, particularly in their dependence upon beam energy, sampling thickness, type of radiator employed, and total counter depth.

Published
1978

8. An X-ray detector as a detector for electron identification

Author

Y. Ishi, H. Miyata, Sarah Catherine Eno, H. Takei, H. Yokota, Yasuo Higashi, H. Harada, E.H. Thorndike, Ron Poling, Yuki Fujii, T. Ishizuka, D. Perticone, K. Ohta, Kazuo Abe, D.H. Han, T. Thomas, and N.M. Shaw

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Detector, X-ray detector, Synchrotron radiation, Cosmic ray, Electron, Instrumentation
Abstract

An X-ray detector (XRD) which identifies electrons using their synchrotron radiation will be installed in the AMY detector to improve its e/π separation ability by a factor of ∼ 30. The construction of the XRD has been completed, and various tests are proceeding using radioactive sources and cosmic rays. We are planning to install the XRD in the AMY detector during an upcoming shutdown in April. In this report, several unique features in the design and the results of the tests are presented.

Published
1989

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

Author

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

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

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

Published
1987

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