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1. Inflammasome-mediated GSDMD activation facilitates escape of Candida albicans from macrophages

Author: Xionghui Ding, Hiroto Kambara, Rongxia Guo, Apurva Kanneganti, Maikel Acosta-Zaldívar, Jiajia Li, Fei Liu, Ting Bei, Wanjun Qi, Xuemei Xie, Wenli Han, Ningning Liu, Cunling Zhang, Xiaoyu Zhang, Hongbo Yu, Li Zhao, Fengxia Ma, Julia R. Köhler, and Hongbo R. Luo
Subjects: Science
Abstract: Inflammasome signalling has been shown to protect Candida albicans during infection and as such limits inflammasome inhibitors in this context. Here the authors implicate Gasdermin D in C.ablicans immune evasion and suggests its targeting therapeutically.
Published: 2021
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2. Identification of the Transgene Integration Site and Host Genome Changes in MRP8-Cre/ires-EGFP Transgenic Mice by Targeted Locus Amplification

Author: Guan Wang, Cunling Zhang, Hiroto Kambara, Cheryl Dambrot, Xuemei Xie, Li Zhao, Rong Xu, Andrea Oneglia, Fei Liu, and Hongbo R. Luo
Subjects: MRP8-Cre transgenic mouse, TLA sequencing, Cre-loxP system, neutrophil, homozygous lethality, Immunologic diseases. Allergy, RC581-607
Abstract: The MRP8-Cre-ires/EGFP transgenic mouse (Mrp8creTg, on C57BL/6J genetic background) is popular in immunological and hematological research for specifically expressing Cre recombinase and an EGFP reporter in neutrophils. It is often crossed with other transgenic lines carrying loxP-flanked genes to achieve restricted gene knockout in neutrophils. However, due to the way in which the line was created, basic knowledge about the MRP8-Cre-ires/EGFP transgene in the host genome, such as its integration site(s) and flanking sequences, remains largely unknown, hampering robust experimental design and data interpretation. Here we used a recently developed technique, targeted locus amplification (TLA) sequencing, to fill these knowledge gaps. We found that the MRP8-Cre-ires/EGFP transgene was integrated into chromosome 5 (5qG2) of the host mouse genome. This integration led to a 44 kb deletion of the host genomic sequence, resulting in complete deletion of Serpine1 and partial deletion of Ap1s1. Having determined the flanking sequences of the transgene, we designed a new genotyping protocol that can distinguish homozygous, heterozygous, and wildtype Mrp8creTg mice. To our surprise, crossing heterozygous mice produced no homozygous Mrp8creTg mice, most likely due to prenatal lethality resulting from disrupted Ap1s1 gene expression.
Published: 2022
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3. Proteinase 3 Limits the Number of Hematopoietic Stem and Progenitor Cells in Murine Bone Marrow

Author: Kutay Karatepe, Haiyan Zhu, Xiaoyu Zhang, Rongxia Guo, Hiroto Kambara, Fabien Loison, Peng Liu, Hongbo Yu, Qian Ren, Xiao Luo, John Manis, Tao Cheng, Fengxia Ma, Yuanfu Xu, and Hongbo R. Luo
Subjects: Medicine (General), R5-920, Biology (General), QH301-705.5
Abstract: Summary: Hematopoietic stem and progenitor cells (HSPCs) undergo self-renewal and differentiation to guarantee a constant supply of short-lived blood cells. Both intrinsic and extrinsic factors determine HSPC fate, but the underlying mechanisms remain elusive. Here, we report that Proteinase 3 (PR3), a serine protease mainly confined to granulocytes, is also expressed in HSPCs. PR3 deficiency intrinsically suppressed cleavage and activation of caspase-3, leading to expansion of the bone marrow (BM) HSPC population due to decreased apoptosis. PR3-deficient HSPCs outcompete the long-term reconstitution potential of wild-type counterparts. Collectively, our results establish PR3 as a physiological regulator of HSPC numbers. PR3 inhibition is a potential therapeutic target to accelerate and increase the efficiency of BM reconstitution during transplantation. : In this article, Luo and colleagues show that Proteinase 3 (PR3), a member of neutrophil serine proteases, is expressed in HSPCs and regulates HSPC numbers in murine bone marrow. Their results suggest that PR3 deficiency does not affect HSPC proliferation but reduces the rate of spontaneous HSPC apoptosis by cleaving and activating caspase-3. Keywords: Proteinase 3, hematopoiesis, hematopoietic stem cell, hematopoietic progenitor cell, apoptosis
Published: 2018
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4. Gasdermin D Exerts Anti-inflammatory Effects by Promoting Neutrophil Death

Author: Hiroto Kambara, Fei Liu, Xiaoyu Zhang, Peng Liu, Besnik Bajrami, Yan Teng, Li Zhao, Shiyi Zhou, Hongbo Yu, Weidong Zhou, Leslie E. Silberstein, Tao Cheng, Mingzhe Han, Yuanfu Xu, and Hongbo R. Luo
Subjects: Biology (General), QH301-705.5
Abstract: Summary: Gasdermin D (GSDMD) is considered a proinflammatory factor that mediates pyroptosis in macrophages to protect hosts from intracellular bacteria. Here, we reveal that GSDMD deficiency paradoxically augmented host responses to extracellular Escherichia coli, mainly by delaying neutrophil death, which established GSDMD as a negative regulator of innate immunity. In contrast to its activation in macrophages, in which activated inflammatory caspases cleave GSDMD to produce an N-terminal fragment (GSDMD-cNT) to trigger pyroptosis, GSDMD cleavage and activation in neutrophils was caspase independent. It was mediated by a neutrophil-specific serine protease, neutrophil elastase (ELANE), released from cytoplasmic granules into the cytosol in aging neutrophils. ELANE-mediated GSDMD cleavage was upstream of the caspase cleavage site and produced a fully active ELANE-derived NT fragment (GSDMD-eNT) that induced lytic cell death as efficiently as GSDMD-cNT. Thus, GSDMD is pleiotropic, exerting both pro- and anti-inflammatory effects that make it a potential target for antibacterial and anti-inflammatory therapies. : Kambara et al. find that GSDMD deficiency augments host responses to extracellular Escherichia coli, mainly by delaying neutrophil death, establishing GSDMD as a negative regulator of innate immunity. GSDMD cleavage and activation in neutrophils is mediated by ELANE, released from cytoplasmic granules into the cytosol in aging neutrophils. Keywords: GSDMD, neutrophil death, neutrophil elastase, innate immunity, host defense
Published: 2018
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5. Positive Regulation of Interleukin-1β Bioactivity by Physiological ROS-Mediated Cysteine S-Glutathionylation

Author: Xue Zhang, Peng Liu, Christie Zhang, Direkrit Chiewchengchol, Fan Zhao, Hongbo Yu, Jingyu Li, Hiroto Kambara, Kate Y. Luo, Arvind Venkataraman, Ziling Zhou, Weidong Zhou, Haiyan Zhu, Li Zhao, Jiro Sakai, Yuanyuan Chen, Ye-Shih Ho, Besnik Bajrami, Bing Xu, Leslie E. Silberstein, Tao Cheng, Yuanfu Xu, Yuehai Ke, and Hongbo R. Luo
Subjects: cytokines, interleukin-1, oxidation, infection and inflammation, reactive oxygen species, posttranslational modification, cysteine S-glutathionylation, Biology (General), QH301-705.5
Abstract: Reactive oxygen species (ROS)-induced cysteine S-glutathionylation is an important posttranslational modification (PTM) that controls a wide range of intracellular protein activities. However, whether physiological ROS can modulate the function of extracellular components via S-glutathionylation is unknown. Using a screening approach, we identified ROS-mediated cysteine S-glutathionylation on several extracellular cytokines. Glutathionylation of the highly conserved Cys-188 in IL-1β positively regulates its bioactivity by preventing its ROS-induced irreversible oxidation, including sulfinic acid and sulfonic acid formation. We show this mechanism protects IL-1β from deactivation by ROS in an in vivo system of irradiation-induced bone marrow (BM) injury. Glutaredoxin 1 (Grx1), an enzyme that catalyzes deglutathionylation, was present and active in the extracellular space in serum and the BM, physiologically regulating IL-1β glutathionylation and bioactivity. Collectively, we identify cysteine S-glutathionylation as a cytokine regulatory mechanism that could be a therapeutic target in the treatment of various infectious and inflammatory diseases.
Published: 2017
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6. Intersection of phosphate transport, oxidative stress and TOR signalling in Candida albicans virulence.

Author: Ning-Ning Liu, Priya Uppuluri, Achille Broggi, Angelique Besold, Kicki Ryman, Hiroto Kambara, Norma Solis, Viola Lorenz, Wanjun Qi, Maikel Acosta-Zaldívar, S Noushin Emami, Bin Bao, Dingding An, Francisco A Bonilla, Martha Sola-Visner, Scott G Filler, Hongbo R Luo, Ylva Engström, Per Olof Ljungdahl, Valeria C Culotta, Ivan Zanoni, Jose L Lopez-Ribot, and Julia R Köhler
Subjects: Immunologic diseases. Allergy, RC581-607, Biology (General), QH301-705.5
Abstract: Phosphate is an essential macronutrient required for cell growth and division. Pho84 is the major high-affinity cell-surface phosphate importer of Saccharomyces cerevisiae and a crucial element in the phosphate homeostatic system of this model yeast. We found that loss of Candida albicans Pho84 attenuated virulence in Drosophila and murine oropharyngeal and disseminated models of invasive infection, and conferred hypersensitivity to neutrophil killing. Susceptibility of cells lacking Pho84 to neutrophil attack depended on reactive oxygen species (ROS): pho84-/- cells were no more susceptible than wild type C. albicans to neutrophils from a patient with chronic granulomatous disease, or to those whose oxidative burst was pharmacologically inhibited or neutralized. pho84-/- mutants hyperactivated oxidative stress signalling. They accumulated intracellular ROS in the absence of extrinsic oxidative stress, in high as well as low ambient phosphate conditions. ROS accumulation correlated with diminished levels of the unique superoxide dismutase Sod3 in pho84-/- cells, while SOD3 overexpression from a conditional promoter substantially restored these cells' oxidative stress resistance in vitro. Repression of SOD3 expression sharply increased their oxidative stress hypersensitivity. Neither of these oxidative stress management effects of manipulating SOD3 transcription was observed in PHO84 wild type cells. Sod3 levels were not the only factor driving oxidative stress effects on pho84-/- cells, though, because overexpressing SOD3 did not ameliorate these cells' hypersensitivity to neutrophil killing ex vivo, indicating Pho84 has further roles in oxidative stress resistance and virulence. Measurement of cellular metal concentrations demonstrated that diminished Sod3 expression was not due to decreased import of its metal cofactor manganese, as predicted from the function of S. cerevisiae Pho84 as a low-affinity manganese transporter. Instead of a role of Pho84 in metal transport, we found its role in TORC1 activation to impact oxidative stress management: overexpression of the TORC1-activating GTPase Gtr1 relieved the Sod3 deficit and ROS excess in pho84-/- null mutant cells, though it did not suppress their hypersensitivity to neutrophil killing or hyphal growth defect. Pharmacologic inhibition of Pho84 by small molecules including the FDA-approved drug foscarnet also induced ROS accumulation. Inhibiting Pho84 could hence support host defenses by sensitizing C. albicans to oxidative stress.
Published: 2018
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7. Palmitoylation of gasdermin D directs its membrane translocation and pore formation in pyroptosis

Author: Arumugam Balasubramanian, Laxman Ghimire, Alan Y. Hsu, Hiroto Kambara, Xing Liu, Tomoya Hasegawa, Rong Xu, Muhammad Tahir, Hongbo Yu, Judy Lieberman, and Hongbo R. Luo
Subjects: Article
Abstract: Gasdermin D (GSDMD)-mediated macrophage pyroptosis plays a critical role in inflammation and host defense. Plasma membrane perforation elicited by caspase-cleaved GSDMD N-terminal domain (GSDMD-NT) triggers membrane rupture and subsequent pyroptotic cell death, resulting in release of pro-inflammatory IL-1β and IL-18. However, the biological processes leading to its membrane translocation and pore formation are not fully understood. Here, using a proteomics approach, we identified fatty acid synthase (FASN) as a GSDMD-binding partner and demonstrated that post-translational palmitoylation of GSDMD at Cys191/Cys192 (human/mouse) led to membrane translocation of GSDMD-NT but not full-length GSDMD. GSDMD lipidation, mediated by palmitoyl acyltransferases ZDHHC5/9 and facilitated by LPS-induced reactive oxygen species (ROS), was essential for GSDMD pore-forming activity and pyroptosis. Inhibition of GSDMD palmitoylation with palmitate analog 2-bromopalmitate or a cell permeable GSDMD-specific competing peptide suppressed pyroptosis and IL-1β release in macrophages, mitigated organ damage, and extended the survival of septic mice. Collectively, we establish GSDMD-NT palmitoylation as a key regulatory mechanism controlling GSDMD membrane localization and activation, providing a novel target for modulating immune activity in infectious and inflammatory diseases.One Sentence SummaryLPS-induced palmitoylation at Cys191/Cys192 is required for GSDMD membrane translocation and its pore-forming activity in macrophages.
Published: 2023

8. Inflammasome-mediated GSDMD activation facilitates escape of Candida albicans from macrophages

Author: Hongbo Yu, Fei Liu, Hiroto Kambara, Xuemei Xie, Maikel Acosta-Zaldívar, Cunling Zhang, Julia R. Köhler, Jiajia Li, Hongbo R. Luo, Rongxia Guo, Ning-Ning Liu, Ting Bei, Fengxia Ma, Li Zhao, Xionghui Ding, Wenli Han, Xiaoyu Zhang, Wanjun Qi, and Apurva Kanneganti
Subjects: Programmed cell death, Inflammasomes, Science, Interleukin-1beta, General Physics and Astronomy, Kaplan-Meier Estimate, Kidney, Article, General Biochemistry, Genetics and Molecular Biology, Microbiology, Sepsis, Mediator, Candida albicans, medicine, Animals, Humans, Cells, Cultured, Mice, Knockout, Multidisciplinary, biology, Immune cell death, Macrophages, Caspase 1, Candidiasis, Intracellular Signaling Peptides and Proteins, Pyroptosis, Inflammasome, General Chemistry, Phosphate-Binding Proteins, medicine.disease, biology.organism_classification, Corpus albicans, Mice, Inbred C57BL, Host-Pathogen Interactions, Female, Infection, Candidalysin, medicine.drug
Abstract: Candida albicans is the most common cause of fungal sepsis. Inhibition of inflammasome activity confers resistance to polymicrobial and LPS-induced sepsis; however, inflammasome signaling appears to protect against C. albicans infection, so inflammasome inhibitors are not clinically useful for candidiasis. Here we show disruption of GSDMD, a known inflammasome target and key pyroptotic cell death mediator, paradoxically alleviates candidiasis, improving outcomes and survival of Candida-infected mice. Mechanistically, C. albicans hijacked the canonical inflammasome-GSDMD axis-mediated pyroptosis to promote their escape from macrophages, deploying hyphae and candidalysin, a pore-forming toxin expressed by hyphae. GSDMD inhibition alleviated candidiasis by preventing C. albicans escape from macrophages while maintaining inflammasome-dependent but GSDMD-independent IL-1β production for anti-fungal host defenses. This study demonstrates key functions for GSDMD in Candida’s escape from host immunity in vitro and in vivo and suggests that GSDMD may be a potential therapeutic target in C. albicans-induced sepsis., Inflammasome signalling has been shown to protect Candida albicans during infection and as such limits inflammasome inhibitors in this context. Here the authors implicate Gasdermin D in C.ablicans immune evasion and suggests its targeting therapeutically.
Published: 2021

9. Single-cell transcriptome profiling reveals neutrophil heterogeneity in homeostasis and infection

Author: Qiang Shi, Qian Ren, Jiayu Su, Hiroto Kambara, Peng Wu, Hongbo R. Luo, Hongbo Yu, Fengxia Ma, Rongxia Guo, Sudong Zhang, Xuemei Xie, Cheng Li, Xiaoyu Zhang, Yuanfu Xu, Tao Cheng, Leslie E. Silberstein, and Shin-Young Park
Subjects: 0301 basic medicine, Neutrophils, Sequence analysis, Cellular differentiation, Immunology, Peritonitis, Biology, Article, Mice, 03 medical and health sciences, 0302 clinical medicine, innate immunity infection, Escherichia coli, medicine, Animals, Homeostasis, Humans, Immunology and Allergy, Transcription factor, Cells, Cultured, Escherichia coli Infections, granulopoiesis, maturation, Sequence Analysis, RNA, Gene Expression Profiling, Neutrophil, RNA, Cell Differentiation, single-cell, Genetic architecture, Cell biology, Gene expression profiling, Disease Models, Animal, 030104 developmental biology, medicine.anatomical_structure, Female, Bone marrow, heterogeneity, Single-Cell Analysis, transcriptome, 030215 immunology
Abstract: The full neutrophil heterogeneity and differentiation landscape remains incompletely characterized. Here, we profiled >25,000 differentiating and mature mouse neutrophils using single-cell RNA sequencing to provide a comprehensive transcriptional landscape of neutrophil maturation, function and fate decision in their steady state and during bacterial infection. Eight neutrophil populations were defined by distinct molecular signatures. The three mature peripheral blood neutrophil subsets arise from distinct maturing bone marrow neutrophil subsets. Driven by both known and uncharacterized transcription factors, neutrophils gradually acquire microbicidal capability as they traverse the transcriptional landscape, representing an evolved mechanism for fine-tuned regulation of an effective but balanced neutrophil response. Bacterial infection reprograms the genetic architecture of neutrophil populations, alters dynamic transitions between subpopulations and primes neutrophils for augmented functionality without affecting overall heterogeneity. In summary, these data establish a reference model and general framework for studying neutrophil-related disease mechanisms, biomarkers and therapeutic targets at single-cell resolution. Luo and colleagues use single-cell RNA sequencing to provide a comprehensive transcriptional landscape of neutrophil maturation, function and fate decision in their steady state and during bacterial infection.
Published: 2020

10. The role of CXCR2 in acute inflammatory responses and its antagonists as anti-inflammatory therapeutics

Author: Hiroto Kambara, Hongbo R. Luo, Fengxia Ma, Rongxia Guo, and Xiaoyu Zhang
Subjects: musculoskeletal diseases, 0301 basic medicine, Neutrophils, medicine.drug_class, Anti-Inflammatory Agents, Inflammation, Disease, Article, Receptors, Interleukin-8B, Anti-inflammatory, 03 medical and health sciences, 0302 clinical medicine, Cell Movement, Granulocyte Colony-Stimulating Factor, medicine, Animals, Humans, Microbiome, CXC chemokine receptors, Receptor, Neutrophil homeostasis, Membrane Glycoproteins, business.industry, Microbiota, hemic and immune systems, Hematology, respiratory system, biological factors, respiratory tract diseases, Protein Phosphatase 2C, 030104 developmental biology, Immunology, Signal transduction, medicine.symptom, T-Box Domain Proteins, business, 030215 immunology
Abstract: Purpose of review CXCR2 is key stimulant of immune cell migration and recruitment, especially of neutrophils. Alleviating excessive neutrophil accumulation and infiltration could prevent prolonged tissue damage in inflammatory disorders. This review focuses on recent advances in our understanding of the role of CXCR2 in regulating neutrophil migration and the use of CXCR2 antagonists for therapeutic benefit in inflammatory disorders. Recent findings Recent studies have provided new insights into how CXCR2 signaling regulates hematopoietic cell mobilization and function in both health and disease. We also summarize several CXCR2 regulatory mechanisms during infection and inflammation such as via Wip1, T-bet, P-selectin glycoprotein ligand-1, granulocyte-colony-stimulating factor, and microbiome. Moreover, we provide an update of studies investigating CXCR2 blockade in the laboratory and in clinical trials. Summary Neutrophil homeostasis, migration, and recruitment must be precisely regulated. The CXCR2 signaling pathway is a potential target for modifying neutrophil dynamics in inflammatory disorders. We discuss the recent clinical use of CXCR2 antagonists for controlling inflammation.
Published: 2019

11. Proteinase 3 Limits the Number of Hematopoietic Stem and Progenitor Cells in Murine Bone Marrow

Author: Tao Cheng, Xiao Luo, Fabien Loison, Fengxia Ma, Yuanfu Xu, Kutay Karatepe, Rongxia Guo, Peng Liu, Hongbo R. Luo, Haiyan Zhu, Xiaoyu Zhang, Hiroto Kambara, John P. Manis, Hongbo Yu, and Qian Ren
Subjects: 0301 basic medicine, Proteinase 3, Cell Survival, Population, Cell Count, Biology, Biochemistry, Article, 03 medical and health sciences, Bone Marrow, Genetics, medicine, Animals, cardiovascular diseases, Progenitor cell, education, lcsh:QH301-705.5, Cell Proliferation, education.field_of_study, lcsh:R5-920, Serine Endopeptidases, apoptosis, Hematopoietic stem cell, Cell Biology, Hematopoietic Stem Cells, hematopoiesis, 3. Good health, Cell biology, Transplantation, Mice, Inbred C57BL, Haematopoiesis, 030104 developmental biology, medicine.anatomical_structure, lcsh:Biology (General), Apoptosis, hematopoietic stem cell, Bone marrow, hematopoietic progenitor cell, lcsh:Medicine (General), Developmental Biology
Abstract: Summary Hematopoietic stem and progenitor cells (HSPCs) undergo self-renewal and differentiation to guarantee a constant supply of short-lived blood cells. Both intrinsic and extrinsic factors determine HSPC fate, but the underlying mechanisms remain elusive. Here, we report that Proteinase 3 (PR3), a serine protease mainly confined to granulocytes, is also expressed in HSPCs. PR3 deficiency intrinsically suppressed cleavage and activation of caspase-3, leading to expansion of the bone marrow (BM) HSPC population due to decreased apoptosis. PR3-deficient HSPCs outcompete the long-term reconstitution potential of wild-type counterparts. Collectively, our results establish PR3 as a physiological regulator of HSPC numbers. PR3 inhibition is a potential therapeutic target to accelerate and increase the efficiency of BM reconstitution during transplantation., Highlights • Proteinase 3 (PR3) is expressed in hematopoietic stem and progenitor cells (HSPCs) • Deficiency of PR3 leads to expansion of HSPCs in murine bone marrow • PR3 regulates spontaneous HSPC apoptosis by cleaving and activating caspase-3, In this article, Luo and colleagues show that Proteinase 3 (PR3), a member of neutrophil serine proteases, is expressed in HSPCs and regulates HSPC numbers in murine bone marrow. Their results suggest that PR3 deficiency does not affect HSPC proliferation but reduces the rate of spontaneous HSPC apoptosis by cleaving and activating caspase-3.
Published: 2018

12. Inflammasome-Mediated GSDMD Activation Dictates Escape of Candida albicansfrom Macrophages

Author: Hiroto Kambara, Xionghui Ding, Apurva Kanneganti, Maikel Acosta-Zaldívar, Ting Bei, Wanjun Qi, Xuemei Xie, Wenli Han, Ningning Liu, Cunling Zhang, Xiaoyu Zhang, Hongbo Yu, Li Zhao, Yong Jiang, Fengxia Ma, Julia R. Köhler, and Hongbo Luo
Published: 2020

13. GSDMD is critical for autoinflammatory pathology in a mouse model of Familial Mediterranean Fever

Author: Hanne Van Gorp, Apurva Kanneganti, Hiroto Kambara, Heather Tillman, R. K. Subbarao Malireddi, Lieselotte Vande Walle, Hongbo R. Luo, Mohamed Lamkanfi, Pedro Henrique Viana Saavedra, Hongbo Chi, Peter Vogel, and Ramnik J. Xavier
Subjects: 0301 basic medicine, PYROPTOTIC CELL-DEATH, Neutrophils, Interleukin-1beta, Familial Mediterranean fever, Disease, PYRIN INFLAMMASOME ACTIVATION, Pyrin domain, Mice, 0302 clinical medicine, Medicine and Health Sciences, Immunology and Allergy, Research Articles, Intracellular Signaling Peptides and Proteins, Pyroptosis, Inflammasome, MEFV, Familial Mediterranean Fever, 3. Good health, DISEASES, 030220 oncology & carcinogenesis, SECRETION, Cytokines, CASPASE-11, Inflammation Mediators, medicine.symptom, medicine.drug, Immunology, Caspase-11, 03 medical and health sciences, medicine, Animals, RELEASE, Inflammation, Clostridioides difficile, Wasting Syndrome, business.industry, Macrophages, Brief Definitive Report, Biology and Life Sciences, Phosphate-Binding Proteins, Pyrin, medicine.disease, Neutrophilia, GASDERMIN D, Disease Models, Animal, IL-1-BETA, 030104 developmental biology, INTERLEUKIN-1-BETA, Apoptosis Regulatory Proteins, business, Spleen
Abstract: Inflammasomes promote interleukin (IL)-1β secretion and pyroptosis. Kanneganti et al. now show that the pyroptosis effector gasdermin D (GSDMD) is required for systemic IL-1β secretion and autoinflammatory pathology in a mouse model of Familial Mediterranean Fever (FMF), suggesting GSDMD inhibitors as potential antiinflammatory treatments., Pyroptosis is an inflammasome-induced lytic cell death mode, the physiological role of which in chronic inflammatory diseases is unknown. Familial Mediterranean Fever (FMF) is the most common monogenic autoinflammatory disease worldwide, affecting an estimated 150,000 patients. The disease is caused by missense mutations in Mefv that activate the Pyrin inflammasome, but the pathophysiologic mechanisms driving autoinflammation in FMF are incompletely understood. Here, we show that Clostridium difficile infection of FMF knock-in macrophages that express a chimeric FMF-associated MefvV726A Pyrin elicited pyroptosis and gasdermin D (GSDMD)–mediated interleukin (IL)-1β secretion. Importantly, in vivo GSDMD deletion abolished spontaneous autoinflammatory disease. GSDMD-deficient FMF knock-in mice were fully protected from the runted growth, anemia, systemic inflammatory cytokine production, neutrophilia, and tissue damage that characterize this autoinflammatory disease model. Overall, this work identifies pyroptosis as a critical mechanism of IL-1β–dependent autoinflammation in FMF and highlights GSDMD inhibition as a potential antiinflammatory strategy in inflammasome-driven diseases.
Published: 2018

14. Gasdermin D Exerts Anti-inflammatory Effects by Promoting Neutrophil Death

Author: Yan Teng, Fei Liu, Hongbo R. Luo, Yuanfu Xu, Hiroto Kambara, Peng Liu, Besnik Bajrami, Mingzhe Han, Hongbo Yu, Shiyi Zhou, Leslie E. Silberstein, Xiaoyu Zhang, Weidong Zhou, Li Zhao, and Tao Cheng
Subjects: 0301 basic medicine, Programmed cell death, Neutrophils, Immunology, Anti-Inflammatory Agents, Article, General Biochemistry, Genetics and Molecular Biology, Proinflammatory cytokine, Mice, 03 medical and health sciences, 0302 clinical medicine, Extracellular, Animals, Humans, Immunology and Allergy, lcsh:QH301-705.5, Caspase, Serine protease, Innate immune system, Cell Death, biology, Chemistry, Intracellular Signaling Peptides and Proteins, Pyroptosis, Phosphate-Binding Proteins, 3. Good health, Cell biology, 030104 developmental biology, lcsh:Biology (General), 030220 oncology & carcinogenesis, Neutrophil elastase, biology.protein, Apoptosis Regulatory Proteins
Abstract: SUMMARY Gasdermin D (GSDMD) is considered a proinflammatory factor that mediates pyroptosis in macrophages to protect hosts from intracellular bacteria. Here, we reveal that GSDMD deficiency paradoxically augmented host responses to extracellular Escherichia coli, mainly by delaying neutrophil death, which established GSDMD as a negative regulator of innate immunity. In contrast to its activation in macrophages, in which activated inflammatory caspases cleave GSDMD to produce an N-terminal fragment (GSDMD-cNT) to trigger pyroptosis, GSDMD cleavage and activation in neutrophils was caspase independent. It was mediated by a neutrophil-specific serine protease, neutrophil elastase (ELANE), released from cytoplasmic granules into the cytosol in aging neutrophils. ELANE-mediated GSDMD cleavage was upstream of the caspase cleavage site and produced a fully active ELANE-derived NT fragment (GSDMD-eNT) that induced lytic cell death as efficiently as GSDMD-cNT. Thus, GSDMD is pleiotropic, exerting both pro- and anti-inflammatory effects that make it a potential target for antibacterial and anti-inflammatory therapies., In Brief Kambara et al. find that GSDMD deficiency augments host responses to extracellular Escherichia coli, mainly by delaying neutrophil death, establishing GSDMD as a negative regulator of innate immunity. GSDMD cleavage and activation in neutrophils is mediated by ELANE, released from cytoplasmic granules into the cytosol in aging neutrophils.
Published: 2018

15. Heterogeneity of neutrophil spontaneous death

Author: Hongbo R. Luo, Hiroto Kambara, and Yan Teng
Subjects: 0301 basic medicine, 03 medical and health sciences, 030104 developmental biology, 0302 clinical medicine, Text mining, business.industry, 030220 oncology & carcinogenesis, Immunology, Medicine, Hematology, Spontaneous death, business
Published: 2017

16. Reactive Oxygen Species–Producing Myeloid Cells Act as a Bone Marrow Niche for Sterile Inflammation–Induced Reactive Granulopoiesis

Author: Hongbo Yu, Hyun-Jeong Kwak, Subhanjan Mondal, Shin-Young Park, Hongbo R. Luo, Besnik Bajrami, Yuanfu Xu, César Nombela-Arrieta, Tao Cheng, Hiroto Kambara, Peng Liu, Haiyan Zhu, Leslie E. Silberstein, and Li Chai
Subjects: Male, 0301 basic medicine, Myeloid, Blotting, Western, Immunology, Cell Separation, Granulopoiesis, Article, Mice, 03 medical and health sciences, 0302 clinical medicine, medicine, Animals, Immunology and Allergy, Granulocyte Precursor Cells, Myeloid Cells, Stem Cell Niche, Progenitor cell, Inflammation, chemistry.chemical_classification, Reactive oxygen species, Microscopy, Confocal, NADPH oxidase, biology, Chemistry, Cell Differentiation, Flow Cytometry, Mice, Mutant Strains, Hematopoiesis, Cell biology, Mice, Inbred C57BL, Transplantation, Disease Models, Animal, Haematopoiesis, 030104 developmental biology, medicine.anatomical_structure, biology.protein, Bone marrow, Reactive Oxygen Species, Granulocytes, 030215 immunology
Abstract: Both microbial infection and sterile inflammation augment bone marrow (BM) neutrophil production, but whether the induced accelerated granulopoiesis is mediated by a common pathway and the nature of such a pathway are poorly defined. We recently established that BM myeloid cell–derived reactive oxygen species (ROS) externally regulate myeloid progenitor proliferation and differentiation in bacteria-elicited emergency granulopoiesis. In this article, we show that BM ROS levels are also elevated during sterile inflammation. Similar to in microbial infection, ROS were mainly generated by the phagocytic NADPH oxidase in Gr1+ myeloid cells. The myeloid cells and their ROS were uniformly distributed in the BM when visualized by multiphoton intravital microscopy, and ROS production was both required and sufficient for sterile inflammation–elicited reactive granulopoiesis. Elevated granulopoiesis was mediated by ROS-induced phosphatase and tensin homolog oxidation and deactivation, leading to upregulated PtdIns(3,4,5)P3 signaling and increased progenitor cell proliferation. Collectively, these results demonstrate that, although infection-induced emergency granulopoiesis and sterile inflammation–elicited reactive granulopoiesis are triggered by different stimuli and are mediated by distinct upstream signals, the pathways converge to NADPH oxidase–dependent ROS production by BM myeloid cells. Thus, BM Gr1+ myeloid cells represent a key hematopoietic niche that supports accelerated granulopoiesis in infective and sterile inflammation. This niche may be an excellent target in various immune-mediated pathologies or immune reconstitution after BM transplantation.
Published: 2017

17. Single-cell transcriptome profiling reveals neutrophil heterogeneity and orchestrated maturation during homeostasis and bacterial infection

Author: Qiang Shi, Hongbo R. Luo, Hiroto Kambara, Yanfeng Xu, Jiayu Su, Tao Cheng, Rongxia Guo, Hongbo Yu, Qian Ren, Xiaohui Xie, Cheng Li, Leslie E. Silberstein, Sudong Zhang, Xiaoyu Zhang, Peng Wu, and Sheldon Park
Subjects: 0303 health sciences, RNA, Biology, Granulopoiesis, Cell biology, 03 medical and health sciences, 0302 clinical medicine, medicine.anatomical_structure, Neutrophil differentiation, medicine, Bone marrow, Progenitor cell, Pathogen, Transcription factor, Homeostasis, 030304 developmental biology, 030215 immunology
Abstract: SummaryThe full neutrophil heterogeneity and differentiation landscape remains incompletely characterized. Here we profiled >25,000 differentiating and mature mouse neutrophils using single-cell RNA sequencing to provide a comprehensive transcriptional landscape of neutrophil maturation, function, and fate decision in their steady state and during bacterial infection. Eight neutrophil populations were defined by distinct molecular signatures. The three mature peripheral blood neutrophil subsets arise from distinct maturing bone marrow neutrophil subsets. Driven by both known and uncharacterized transcription factors, neutrophils gradually acquire microbicidal capability as they traverse the transcriptional landscape, representing an evolved mechanism for fine-tuned regulation of an effective but balanced neutrophil response. Bacterial infection reprograms the genetic architecture of neutrophil populations, alters dynamic transition between each subpopulation, and primes neutrophils for augmented functionality without affecting overall heterogeneity. In summary, these data establish a reference model and general framework for studying neutrophil-related disease mechanisms, biomarkers, and therapeutic targets at single-cell resolution.Graphical AbstractHighlightsA comprehensive single-cell resolution transcriptional landscape of mouse neutrophil maturation and fate decision under steady-state and bacterial infection conditions.The pathogen clearance machinery in neutrophils is continuously and gradually built during neutrophil differentiation, maturation, and aging, driven by both known and uncharacterized transcription factors.The three mature neutrophil subsets in peripheral blood, including a novel ISG-expressing subset, are derived from distinct bone marrow neutrophil precursors.Bacterial infection reprograms the genetic architecture of neutrophil populations, alters dynamic transition between each subpopulation, and primes neutrophils for augmented functionality without affecting overall neutrophil heterogeneity.Bacterial infection-induced emergency granulopoiesis is mediated by augmented proliferation of early stage neutrophil progenitors and accelerated post-mitotic maturation.
Published: 2019
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18. Intersection of phosphate transport, oxidative stress and TOR signalling inCandida albicansvirulence

Author: Maikel Acosta-Zaldívar, Hongbo R. Luo, Scott G. Filler, Dingding An, Hiroto Kambara, Bin Bao, S. Noushin Emami, Jose L. Lopez-Ribot, Achille Broggi, Ivan Zanoni, Priya Uppuluri, Viola Lorenz, Angelique N. Besold, Per O. Ljungdahl, Valeria C. Culotta, Julia R. Köhler, Martha Sola-Visner, Kicki Ryman, Norma V. Solis, Ylva Engström, Francisco A. Bonilla, Ning-Ning Liu, and Wanjun Qi
Subjects: chemistry.chemical_classification, Hyphal growth, Reactive oxygen species, biology, SOD3, Wild type, medicine.disease_cause, biology.organism_classification, Respiratory burst, Cell biology, Superoxide dismutase, chemistry, medicine, biology.protein, Candida albicans, Oxidative stress
Abstract: Phosphate is an essential macronutrient required for cell growth and division. Pho84 is the major high-affinity cell-surface phosphate importer ofSaccharomyces cerevisiaeand a crucial element in the phosphate homeostatic system of this model yeast. We found that loss ofCandida albicansPho84 attenuated virulence inDrosophilaand murine oropharyngeal and disseminated models of invasive infection, and conferred hypersensitivity to neutrophil killing. Susceptibility of cells lacking Pho84 to neutrophil attack depended on reactive oxygen species (ROS):pho84-/-cells were no more susceptible than wild typeC. albicansto neutrophils from a patient with chronic granulomatous disease, or to those whose oxidative burst was pharmacologically inhibited or neutralized.pho84-/-mutants hyperactivated oxidative stress signalling. They accumulated intracellular ROS in the absence of extrinsic oxidative stress, in high as well as low ambient phosphate conditions. ROS accumulation correlated with diminished levels of the unique superoxide dismutase Sod3 inpho84-/-cells, whileSOD3overexpression from a conditional promoter substantially restored these cells’ oxidative stress resistance in vitro. Repression ofSOD3expression sharply increased their oxidative stress hypersensitivity. Neither of these oxidative stress management effects of manipulatingSOD3transcription was observed inPHO84wild type cells. Sod3 levels were not the only factor driving oxidative stress effects onpho84-/-cells, though, because overexpressingSOD3did not ameliorate these cells’ hypersensitivity to neutrophil killing ex vivo, indicating Pho84 has further roles in oxidative stress resistance and virulence. Measurement of cellular metal concentrations demonstrated that diminished Sod3 expression was not due to decreased import of its metal cofactor manganese, as predicted from the function ofS. cerevisiaePho84 as a low-affinity manganese transporter. Instead of a role of Pho84 in metal transport, we found its role in TORC1 activation to impact oxidative stress management: overexpression of the TORC1-activating GTPase Gtr1 relieved the Sod3 deficit and ROS excess inpho84-/-null mutant cells, though it did not suppress their hypersensitivity to neutrophil killing or hyphal growth defect. Pharmacologic inhibition of Pho84 by small molecules including the FDA-approved drug foscarnet also induced ROS accumulation. Inhibiting Pho84 could hence support host defenses by sensitizingC. albicansto oxidative stress.
Published: 2018

19. Gasdermin D Exerts Anti-Inflammatory Effects by Promoting Neutrophil Death

Author: Leslie E. Silberstein, Hongbo Yu, Weidong Zhou, Hiroto Kambara, Peng Liu, Hongbo R. Luo, Fei Liu, Yan Teng, Yuanfu Xu, Besnik Bajrami, Shiyi Zhou, and Tao Cheng
Subjects: Programmed cell death, Innate immune system, biology, Lytic cycle, Chemistry, Neutrophil elastase, Pyroptosis, biology.protein, Extracellular, Macrophage, Caspase, Cell biology
Abstract: Gasdermin D (GSDMD) is considered a pro-inflammatory factor that mediates lytic pyroptotic cell death in macrophages to protect hosts from intracellular bacteria (He et al., 2015; Kayagaki et al., 2015; Shi et al., 2015a). However, GSDMD’s role in clearing extracellular pathogens has not been directly examined. Here we reveal that GSDMD deficiency unexpectedly and paradoxically augmented host responses to extracellular Escherichia coli, mainly by delaying neutrophil death, for the first time establishing GSDMD as a negative regulator of innate immunity. The levels of pro-inflammatory cytokines in the peritoneal cavity were significantly elevated in GSDMD-deficient mice, suggesting that the production of these cytokines was not mainly mediated by macrophage pyroptosis. This further confirmed that in E.coli-induced peritonitis GSDMD acted as an anti-inflammatory factor. In contrast to its activation in macrophages, in which activated inflammatory caspases cleave GSDMD to produce an N-terminal fragment (GSDMD-cNT) to trigger pyroptosis, GSDMD cleavage and activation in neutrophils was caspase independent and mediated by a neutrophil-specific serine protease, neutrophil elastase (ELANE), released from cytoplasmic granules into the cytosol during neutrophil death. ELANE-mediated GSDMD cleavage was upstream of the caspase cleavage site and produced a fully active ELANE-derived Nterminal fragment (GSDMD-eNT) that induced lytic cell death as efficiently as GSDMD-cNT. This is the first description of GSDMD’s role in neutrophil death and the negative regulation of neutrophil-mediated innate immunity. Thus, GSDMD is pleiotropic, exerting both pro- and anti-inflammatory effects that make it a unique target for novel anti-bacterial and anti-inflammatory therapies.
Published: 2018

20. Japanese Encephalitis Virus Core Protein Inhibits Stress Granule Formation through an Interaction with Caprin-1 and Facilitates Viral Propagation

Author: Hiroto Kambara, Yoshiharu Matsuura, Yoshio Mori, Toru Okamoto, Hiroshi Katoh, Takasuke Fukuhara, Wataru Kamitani, and Eiji Morita
Subjects: viruses, DNA Mutational Analysis, Immunology, Mutant, Mutagenesis (molecular biology technique), Cell Cycle Proteins, Plasma protein binding, Biology, Cytoplasmic Granules, Virus Replication, Microbiology, Mass Spectrometry, Virus, Cell Line, Mice, Stress granule, Virology, Chlorocebus aethiops, Animals, Humans, Encephalitis Virus, Japanese, Virulence, Viral Core Proteins, Alanine scanning, Molecular biology, Virus-Cell Interactions, Amino Acid Substitution, Viral replication, Cell culture, Insect Science, Host-Pathogen Interactions, Mutant Proteins, Protein Binding
Abstract: Stress granules (SGs) are cytoplasmic foci composed of stalled translation preinitiation complexes induced by environmental stress stimuli, including viral infection. Since viral propagation completely depends on the host translational machinery, many viruses have evolved to circumvent the induction of SGs or co-opt SG components. In this study, we found that expression of Japanese encephalitis virus (JEV) core protein inhibits SG formation. Caprin-1 was identified as a binding partner of the core protein by an affinity capture mass spectrometry analysis. Alanine scanning mutagenesis revealed that Lys 97 and Arg 98 in the α-helix of the JEV core protein play a crucial role in the interaction with Caprin-1. In cells infected with a mutant JEV in which Lys 97 and Arg 98 were replaced with alanines in the core protein, the inhibition of SG formation was abrogated, and viral propagation was impaired. Furthermore, the mutant JEV exhibited attenuated virulence in mice. These results suggest that the JEV core protein circumvents translational shutoff by inhibiting SG formation through an interaction with Caprin-1 and facilitates viral propagation in vitro and in vivo .
Published: 2013

21. Observation of diffractive J/psi production at the Fermilab Tevatron

Author: K. Kondo, Robert M Harris, G. Veramendi, M. Gold, A. Munar, G. Pauletta, Andrea Castro, D. Khazins, Maxwell Chertok, T. Ohsugi, I. Yu, M. J. Shochet, K. Karr, R. J. Miller, A. Connolly, E. Kovacs, T. Ohmoto, W. Orejudos, Frank Chlebana, T. Asakawa, Z. Yu, Marjorie Shapiro, A. J. Slaughter, A. Mukherjee, A. Akopian, C. Pagliarone, G. Punzi, E. Engels, Maurice Garcia-Sciveres, M. P. Schmidt, Andrea Bocci, E. Buckley-Geer, Riccardo Paoletti, P. Schlabach, S. Galeotti, A. Rakitine, P. Sinervo, R. Takashima, Tommaso Dorigo, James Bensinger, M. Barone, M. Kelly, E. McKigney, J. Wolinski, A. Reichold, Leonard Spiegel, R. Vilar, P. K. Teng, C. Green, A. Nomerotski, T. Yoshida, P. Azzi-Bacchetta, C. Smith, M. Guenther, C. Bromberg, P. Murat, G. Velev, N. Lai, Kazuhiko Hara, F. Zetti, Stephan Lammel, A. Robinson, S. Wolinski, J. D. Lewis, Kenichi Hatakeyama, J. G. Loken, C. Holck, E. James, S. Vejcik, M. Mangano, G. W. Foster, D. Glenzinski, M. Lindgren, T. Kikuchi, A. Artikov, S. Segler, H. Sato, M. Kirk, P. Koehn, P. Yeh, Fedor Prokoshin, Pierre Savard, M. Popovic, Yasuo Fukui, T. Takano, M. Franklin, Lawrence Nodulman, M. Shimojima, Stefano Belforte, T. Okusawa, T. Kuwabara, P. Mazzanti, Q. Fan, A. Tollestrup, W. Caskey, C. Ferretti, R. E. Hughes, Maria Spiropulu, T. Devlin, B. Tannenbaum, Thomas LeCompte, A. Sidoti, J. Done, J. Huston, Matthew Herndon, Chunhui Chen, Petar Maksimovic, Hajin Kim, M. Mishina, J. C. Freeman, J. A.J. Matthews, G. Bauer, A. D. Hardman, F. D. Snider, J. Cranshaw, L. Ristori, R. Culbertson, R. J. Tesarek, S. Rolli, Benjamin Kilminster, Y. Gotra, Fumihiko Ukegawa, A. Dominguez, D. Winn, Christoph Paus, J. Carlson, A. B. Wicklund, William Trischuk, D. Lucchesi, Barry Blumenfeld, S. C. van den Brink, M. J. Wang, T. Miao, R. M. Haas, Umesh Joshi, Roger Moore, M. H. Kirby, D. O. Litvintsev, Nicola Bacchetta, E. E. Schmidt, C. I. Ciobanu, A. Roy, J. Steele, F. Bedeschi, Xin Wu, S. Wolbers, D. W. Gerdes, K. D. Hoffman, Gino Bolla, T. L. Watts, L. Holloway, H. Toyoda, S. H. Kim, Christina Mesropian, Yanwen Liu, R. Kephart, R. L. Wagner, Hiroto Kambara, T. Handa, Andrey Korytov, N. S. Lockyer, Roberto Rossin, S. Cabrera, W. Carithers, S. Murgia, H. Wenzel, H. Akimoto, A. Scribano, R. Oishi, R. Madrak, Joe Kroll, C. Nelson, Monica D'Onofrio, J. Patrick, P. Sphicas, Virgil E Barnes, N. Moggi, Frank Hartmann, Alan Sill, K. Goulianos, S. R. Hahn, V. Glagolev, K. S. McFarland, S. Tether, J. Antos, Konstanty Sumorok, M. Bishai, S. Lami, T. Shah, J. Berryhill, A. Semenov, M. Cordelli, G. Busetto, Brian L Winer, M. Brozovic, Minu Kim, S. Waschke, K. Tollefson, R. G. Wagner, Kenneth Bloom, Matthew Jones, K. Anikeev, D. Errede, G. Latino, Th. Müller, K. Sliwa, S. Klimenko, Aw Chan, T. Shibayama, M. Loreti, Duncan Carlsmith, J. Valls, D. Wolinski, K. Kelley, S. Leone, H. S. Budd, T. Kaneko, Joel Goldstein, Y. C. Chen, S. Tkaczyk, David Stuart, Y. Kato, D. Neuberger, G. Guillian, M. Binkley, P. Gris, Alexei Safonov, M. G. Albrow, Douglas Benjamin, J. Guimaraes Da Costa, D. Tonelli, R. G. Feild, K. Terashi, P. S. Chang, J. B. Liu, James D. Olsen, S. Lusin, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, C. Haber, Tong Gao, S. E. Kuhlmann, A. Menzione, Y. Seiya, Nicola Turini, A. T. Laasanen, Catherine Newman-Holmes, Jay Hauser, G. P. Yeh, I. V. Gorelov, T. Speer, J. Spalding, G. Chlachidze, G. P. Grim, Masaaki Tanaka, Tony Liss, P. Amaral, G. Piacentino, S. Worm, K. Borras, R. D. Field, D. Amidei, M. L. Chu, A. T. Goshaw, H. Minato, Mosè Mariotti, Paolo Calafiura, Teresa Rodrigo, K. Lee, W. C. Wester, F. Strumia, T. J. Phillips, S. Miscetti, S. Zucchelli, R. E. Blair, Andrea Sansoni, Ivan-Kresimir Furic, Christopher Neu, F. Rimondi, E. Brubaker, J. Strologas, P. de Barbaro, A. Gallas, J. F. de Troconiz, Y. Morita, P. Tamburello, J. Lys, S. Donati, J. Yoh, P. Gatti, M. E. Convery, P. F. Derwent, V. Nagaslaev, M. von der Mey, Hiroshi Ikeda, R. Roser, Ivan Vila, J. N. Bellinger, G. Bellettini, H. Bachacou, S. Baroiant, F. DeJongh, W. Ashmanskas, Robin Erbacher, W-M. Yao, O. Pukhov, Louis Lyons, G. Martignon, R. C. Webb, J.I. Friedman, M. Lancaster, A. Byon-Wagner, Tetsuo Arisawa, C. Hill, S. Errede, W. K. Sakumoto, N. B. Wallace, L. Demortier, Igor Volobouev, C. H. Wang, N. Eddy, R. J. Hollebeek, J. Wyss, Soo-Bong Kim, Andrew Beretvas, Timothy Knight Nelson, C. Grosso-Pilcher, Z. Wan, A. M. Lee, J. S. Miller, Kevin Burkett, Jacobo Konigsberg, Young Do Oh, J. Mayer, Beom Jun Kim, Richard Dante St Denis, A. Bodek, J. Iwai, W. H. Bell, G. Chiarelli, W. Hao, A. Ruiz, D. Toback, M. T. Cheng, R. D. Kennedy, M. M. Deninno, C. Yosef, Alessandro Cerri, B. Ward, Amitabh Lath, A. Brandl, T. Moulik, I.E. Chirikov-Zorin, A. Solodsky, A. G. Clark, B. A. Barnett, Giorgio Apollinari, A. Meyer, J. Siegrist, Kevin Einsweiler, T. Wilkes, John Huth, M. Dell'Orso, Teruki Kamon, A. J. Martin, L. Pondrom, E. Wicklund, Craig Blocker, C. R. Hall, J. W. Chapman, Kaori Maeshima, Mark Kruse, Luca Scodellaro, Guenakh Mitselmakher, J. E. Elias, T. Vaiciulis, Paul Tipton, K. L. Byrum, P. Wilson, P. N. Singh, M. Menguzzato, M. Tecchio, R. Vidal, Anna Zanetti, H. Kasha, H. Niu, N. Bruner, L. Rosenson, P. F. Shepard, S. H. Oh, Jane Nachtman, J. P. Fernandez, L. E. Kirsch, F. Ratnikov, P. Lukens, Jay Dittmann, D. Cauz, V. Papadimitriou, Daijin Kim, Michele Gallinaro, A. S. Thompson, A. Heiss, Itsuo Nakano, D. Dagenhart, J. Tseng, L. Groer, L. Pescara, Alan Garfinkel, J. Boudreau, M. Riveline, H. H. Williams, K. T. Pitts, G. Introzzi, A. Korn, A. Stefanini, Y. Bonushkin, David Saltzberg, D. Reher, P. McIntyre, J. Budagov, R. L. Lander, J. P. Berge, F. Azfar, D. E. Pellett, L. Christofek, T. Suzuki, C. Sanchez, Manfred Paulini, S. Blusk, Jochen Jens Heinrich, H. Nakada, A. Pompos, Sally Seidel, Saverio D'Auria, O. Lobban, Yongsun Kim, L. Santi, Shin-Shan Yu, A. Ribon, M. Mulhearn, W. Riegler, F. Ptohos, W. J. Robertson, T. Watanabe, W. Bokhari, M. Campbell, D. Waters, P. Giannetti, J. Lancaster, R. Handler, Y. S. Chung, S. Dell'Agnello, R. Cropp, S. Bailey, B. Flaugher, Michael Schmitt, J. Incandela, J. Conway, G. Pope, T. Affolder, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, T. A. Keaffaber, F. Spinella, K. Kurino, I. Fiori, A. W. Scott, D. Partos, James Proudfoot, F. Palmonari, L. Malferrari, R. Thurman-Keup, Cyp Ngan, S. Nahn, E. Moore, Y. Iwata, Daniela Bortoletto, K. Takikawa, Clark, Allan Geoffrey, Kambara, Hisanori, Speer, Thomas, Strumia Michelini, Federica, and Wu, Xin
Subjects: Physics, Particle physics, Muon, Proton, Tevatron, General Physics and Astronomy, Particle accelerator, ddc:500.2, SILICON VERTEX DETECTOR, DIJET PRODUCTION, CDF, Gluon, law.invention, High Energy Physics - Experiment, Nuclear physics, law, Pseudorapidity, SILICON VERTEX DETECTOR, DIJET PRODUCTION, CDF, Rapidity, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, QC
Abstract: We report the first observation of diffractive $J/\psi(\to \mu^+\mu^-)$ production in $\bar pp$ collisions at $\sqrt{s}$=1.8 TeV. Diffractive events are identified by their rapidity gap signature. In a sample of events with two muons of transverse momentum $p_T^{\mu}>2$ GeV/$c$ within the pseudorapidity region $|\eta, Comment: 9 pages, 4 figures, using RevTeX. Submitted to Physical Review Letters
Published: 2016

22. Positive Regulation of Interleukin-1β Bioactivity by Physiological ROS-Mediated Cysteine S-Glutathionylation

Author: Peng Liu, Christie Zhang, Xue Zhang, Yuanyuan Chen, Yuanfu Xu, Fan Zhao, Hongbo R. Luo, Ziling Zhou, Hongbo Yu, Kate Y. Luo, Direkrit Chiewchengchol, Jiro Sakai, Bing Xu, Li Zhao, Jingyu Li, Tao Cheng, Leslie E. Silberstein, Yuehai Ke, Weidong Zhou, Arvind Venkataraman, Besnik Bajrami, Ye-Shih Ho, Haiyan Zhu, and Hiroto Kambara
Subjects: 0301 basic medicine, Male, oxidation, medicine.medical_treatment, Amino Acid Motifs, Interleukin-1beta, Bone Marrow Cells, Biology, cysteine S-glutathionylation, General Biochemistry, Genetics and Molecular Biology, Article, 03 medical and health sciences, Mice, Glutaredoxin, Extracellular, medicine, Animals, infection and inflammation, Cysteine, S-Glutathionylation, lcsh:QH301-705.5, Glutaredoxins, chemistry.chemical_classification, Reactive oxygen species, posttranslational modification, Interleukin, Glutathione, cytokines, Mice, Inbred C57BL, 030104 developmental biology, Enzyme, Cytokine, chemistry, Biochemistry, lcsh:Biology (General), Reactive Oxygen Species, Protein Processing, Post-Translational, interleukin-1
Abstract: Reactive oxygen species (ROS)-induced cysteine S-glutathionylation is an important posttranslational modification (PTM) that controls a wide range of intracellular protein activities. However, whether physiological ROS can modulate the function of extracellular components via S-glutathionylation is unknown. Using a screening approach, we identified ROS-mediated cysteine S-glutathionylation on several extracellular cytokines. Glutathionylation of the highly conserved Cys-188 in IL-1β positively regulates its bioactivity by preventing its ROS-induced irreversible oxidation, including sulfinic acid and sulfonic acid formation. We show this mechanism protects IL-1β from deactivation by ROS in an in vivo system of irradiation-induced bone marrow (BM) injury. Glutaredoxin 1 (Grx1), an enzyme that catalyzes deglutathionylation, was present and active in the extracellular space in serum and the BM, physiologically regulating IL-1β glutathionylation and bioactivity. Collectively, we identify cysteine S-glutathionylation as a cytokine regulatory mechanism that could be a therapeutic target in the treatment of various infectious and inflammatory diseases.
Published: 2016

23. Proteomic Analysis of Hepatitis C Virus (HCV) Core Protein Transfection and Host Regulator PA28γ Knockout in HCV Pathogenesis: A Network-Based Study

Author: Yoshio Mori, Kenji Mizuguchi, Lokesh P. Tripathi, Yi-An Chen, Kohji Moriishi, Hiroto Kambara, Eiji Morita, Takayuki Abe, and Yoshiharu Matsuura
Subjects: Proteomics, Proteasome Endopeptidase Complex, Proteome, Hepatitis C virus, Mice, Transgenic, Hepacivirus, Biology, Virus Replication, medicine.disease_cause, Autoantigens, Biochemistry, Cell Line, Pathogenesis, Gene Knockout Techniques, Mice, medicine, Animals, Humans, Protein Interaction Maps, Transport Vesicles, Cell adhesion, Virus Release, Host factor, Cell Death, Viral Core Proteins, General Chemistry, Transfection, Qb-SNARE Proteins, medicine.disease, Hepatitis C, Virology, Recombinant Proteins, digestive system diseases, Mice, Inbred C57BL, Vesicular transport protein, Capsid, Hepatocellular carcinoma, Host-Pathogen Interactions, Cell Adhesion Molecules
Abstract: Hepatitis C virus (HCV) causes chronic liver disease worldwide. HCV Core protein (Core) forms the viral capsid and is crucial for HCV pathogenesis and HCV-induced hepatocellular carcinoma, through its interaction with the host factor proteasome activator PA28γ. Here, using BD-PowerBlot high-throughput Western array, we attempt to further investigate HCV pathogenesis by comparing the protein levels in liver samples from Core-transgenic mice with or without the knockout of PA28γ expression (abbreviated PA28γ(-/-)CoreTG and CoreTG, respectively) against the wild-type (WT). The differentially expressed proteins integrated into the human interactome were shown to participate in compact and well-connected cellular networks. Functional analysis of the interaction networks using a newly developed data warehouse system highlighted cellular pathways associated with vesicular transport, immune system, cellular adhesion, and cell growth and death among others that were prominently influenced by Core and PA28γ in HCV infection. Follow-up assays with in vitro HCV cell culture systems validated VTI1A, a vesicular transport associated factor, which was upregulated in CoreTG but not in PA28γ(-/-)CoreTG, as a novel regulator of HCV release but not replication. Our analysis provided novel insights into the Core-PA28γ interplay in HCV pathogenesis and identified potential targets for better anti-HCV therapy and potentially novel biomarkers of HCV infection.
Published: 2012

24. Heterogeneous Nuclear Ribonucleoprotein A2 Participates in the Replication of Japanese Encephalitis Virus through an Interaction with Viral Proteins and RNA

Author: Takasuke Fukuhara, Wataru Kamitani, Kohji Moriishi, Takayuki Abe, Yoshiharu Matsuura, Yoshio Mori, Hiroshi Katoh, Hiroto Kambara, and Eiji Morita
Subjects: Untranslated region, Small interfering RNA, viruses, Immunology, Virus Replication, environment and public health, Microbiology, Virus, Cell Line, Viral Proteins, chemistry.chemical_compound, Virology, RNA polymerase, Heterogeneous-Nuclear Ribonucleoprotein Group A-B, Animals, Humans, Immunoprecipitation, Encephalitis Virus, Japanese, Gene knockdown, biology, RNA, biology.organism_classification, Virus-Cell Interactions, Flavivirus, Viral replication, chemistry, Insect Science, Host-Pathogen Interactions, RNA, Viral
Abstract: Japanese encephalitis virus (JEV) is a mosquito-borne flavivirus that is kept in a zoonotic transmission cycle between pigs and mosquitoes. JEV causes infection of the central nervous system with a high mortality rate in dead-end hosts, including humans. Many studies have suggested that the flavivirus core protein is not only a component of nucleocapsids but also an important pathogenic determinant. In this study, we identified heterogeneous nuclear ribonucleoprotein A2 (hnRNP A2) as a binding partner of the JEV core protein by pulldown purification and mass spectrometry. Reciprocal coimmunoprecipitation analyses in transfected and infected cells confirmed a specific interaction between the JEV core protein and hnRNP A2. Expression of the JEV core protein induced cytoplasmic retention of hnRNP A2 in JEV subgenomic replicon cells. Small interfering RNA (siRNA)-mediated knockdown of hnRNP A2 resulted in a 90% reduction of viral RNA replication in cells infected with JEV, and the reduction was cancelled by the expression of an siRNA-resistant hnRNP A2 mutant. In addition to the core protein, hnRNP A2 also associated with JEV nonstructural protein 5, which has both methyltransferase and RNA-dependent RNA polymerase activities, and with the 5′-untranslated region of the negative-sense JEV RNA. During one-step growth, synthesis of both positive- and negative-strand JEV RNAs was delayed by the knockdown of hnRNP A2. These results suggest that hnRNP A2 plays an important role in the replication of JEV RNA through the interaction with viral proteins and RNA.
Published: 2011

25. Involvement of cyclophilin B in the replication of Japanese encephalitis virus

Author: Takasuke Fukuhara, Shuhei Taguwa, Takayuki Abe, Yoshiharu Matsuura, Yoshio Mori, Hideki Tani, Kohji Moriishi, Hiroto Kambara, and Hiroshi Katoh
Subjects: viruses, Replication, Viral Nonstructural Proteins, Biology, Virus Replication, Antiviral Agents, Virus, Cell Line, Cyclophilins, Cyclosporine A, Flaviviridae, Cyclosporin a, Virology, medicine, Animals, Humans, Immunoprecipitation, Encephalitis Virus, Japanese, Gene knockdown, RNA virus, Japanese encephalitis, medicine.disease, biology.organism_classification, Viral replication, Cell culture, Gene Knockdown Techniques, Host-Pathogen Interactions, JEV, Cyclosporine, Cyclophilin B, Protein Binding
Abstract: Japanese encephalitis virus (JEV) is a mosquito-borne RNA virus that belongs to the Flaviviridae family. In this study, we have examined the effect of cyclosporin A (CsA) on the propagation of JEV. CsA exhibited potent anti-JEV activity in various mammalian cell lines through the inhibition of CypB. The propagation of JEV was impaired in the CypB-knockdown cells and this reduction was cancelled by the expression of wild-type but not of peptidylprolyl cis-trans isomerase (PPIase)-deficient CypB, indicating that PPIase activity of CypB is critical for JEV propagation. Infection of pseudotype viruses bearing JEV envelope proteins was not impaired by the knockdown of CypB, suggesting that CypB participates in the replication but not in the entry of JEV. CypB was colocalized and immunoprecipitated with JEV NS4A in infected cells. These results suggest that CypB plays a crucial role in the replication of JEV through an interaction with NS4A.
Published: 2011
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26. Intersection of phosphate transport, oxidative stress and TOR signalling in Candida albicans virulence

Author: Francisco A. Bonilla, Valeria C. Culotta, Martha Sola-Visner, Ivan Zanoni, Ning-Ning Liu, Kicki Ryman, Bin Bao, Jose L. Lopez-Ribot, Priya Uppuluri, Scott G. Filler, Norma V. Solis, Viola Lorenz, Julia Koehler, Dingding An, Per O. Ljungdahl, Wanjun Qi, Hongbo R. Luo, S. Noushin Emami, Achille Broggi, Hiroto Kambara, Maikel Acosta-Zaldívar, Ylva Engström, Angelique N. Besold, Liu, N, Uppuluri, P, Broggi, A, Besold, A, Ryman, K, Kambara, H, Solis, N, Lorenz, V, Qi, W, Acosta-Zaldivar, M, Emami, S, Bao, B, An, D, Bonilla, F, Sola-Visner, M, Filler, S, Luo, H, Engstrom, Y, Ljungdahl, P, Culotta, V, Zanoni, I, Lopez-Ribot, J, and Kohler, J
Subjects: 0301 basic medicine, Hyphal growth, Neutrophils, Physiology, diphenyliodonium salt, Yeast and Fungal Models, Pathology and Laboratory Medicine, medicine.disease_cause, Biochemistry, Redox Signaling, White Blood Cells, Mice, Cell Signaling, Animal Cells, Proton-Phosphate Symporters, Candida albicans, Medicine and Health Sciences, Biology (General), Candida, Fungal Pathogens, chemistry.chemical_classification, Virulence, biology, TOR Serine-Threonine Kinases, Candidiasis, Eukaryota, Animal Models, Enzymes, Body Fluids, 3. Good health, Respiratory burst, Cell biology, Dismutases, Blood, Experimental Organism Systems, Medical Microbiology, manganese, Drosophila, Pathogens, Cellular Types, Anatomy, Research Article, Signal Transduction, S1, QH301-705.5, SOD3, Immune Cells, Immunology, Mouse Models, Mycology, Research and Analysis Methods, Microbiology, Phosphates, Fungal Proteins, Superoxide dismutase, 03 medical and health sciences, Model Organisms, Virology, Hypersensitivity, Genetics, medicine, Animals, Humans, Microbial Pathogens, Molecular Biology, Reactive oxygen species, Blood Cells, doxycycline, Superoxide Dismutase, Organisms, Fungi, Wild type, Biology and Life Sciences, Proteins, Biological Transport, Cell Biology, RC581-607, biology.organism_classification, Yeast, Oxidative Stress, 030104 developmental biology, chemistry, Enzymology, biology.protein, Clinical Immunology, Parasitology, Clinical Medicine, Immunologic diseases. Allergy, Oxidative stress
Abstract: Phosphate is an essential macronutrient required for cell growth and division. Pho84 is the major high-affinity cell-surface phosphate importer of Saccharomyces cerevisiae and a crucial element in the phosphate homeostatic system of this model yeast. We found that loss of Candida albicans Pho84 attenuated virulence in Drosophila and murine oropharyngeal and disseminated models of invasive infection, and conferred hypersensitivity to neutrophil killing. Susceptibility of cells lacking Pho84 to neutrophil attack depended on reactive oxygen species (ROS): pho84-/- cells were no more susceptible than wild type C. albicans to neutrophils from a patient with chronic granulomatous disease, or to those whose oxidative burst was pharmacologically inhibited or neutralized. pho84-/- mutants hyperactivated oxidative stress signalling. They accumulated intracellular ROS in the absence of extrinsic oxidative stress, in high as well as low ambient phosphate conditions. ROS accumulation correlated with diminished levels of the unique superoxide dismutase Sod3 in pho84-/- cells, while SOD3 overexpression from a conditional promoter substantially restored these cells’ oxidative stress resistance in vitro. Repression of SOD3 expression sharply increased their oxidative stress hypersensitivity. Neither of these oxidative stress management effects of manipulating SOD3 transcription was observed in PHO84 wild type cells. Sod3 levels were not the only factor driving oxidative stress effects on pho84-/- cells, though, because overexpressing SOD3 did not ameliorate these cells’ hypersensitivity to neutrophil killing ex vivo, indicating Pho84 has further roles in oxidative stress resistance and virulence. Measurement of cellular metal concentrations demonstrated that diminished Sod3 expression was not due to decreased import of its metal cofactor manganese, as predicted from the function of S. cerevisiae Pho84 as a low-affinity manganese transporter. Instead of a role of Pho84 in metal transport, we found its role in TORC1 activation to impact oxidative stress management: overexpression of the TORC1-activating GTPase Gtr1 relieved the Sod3 deficit and ROS excess in pho84-/- null mutant cells, though it did not suppress their hypersensitivity to neutrophil killing or hyphal growth defect. Pharmacologic inhibition of Pho84 by small molecules including the FDA-approved drug foscarnet also induced ROS accumulation. Inhibiting Pho84 could hence support host defenses by sensitizing C. albicans to oxidative stress., Author summary Candida albicans is the species most often isolated from patients with invasive fungal disease, and is also a common colonizer of healthy people. It is well equipped to compete for nutrients with bacteria co-inhabiting human gastrointestinal mucous membranes, since it possesses multiple transporters to internalize important nutrients like sugars, nitrogen sources, and phosphate. During infection, the fungus needs to withstand human defense cells that attack it with noxious chemicals, among which reactive oxygen species (ROS) are critical. We found that a high-affinity phosphate transporter, Pho84, is required for C. albicans’ ability to successfully invade animal hosts and to eliminate ROS. Levels of a fungal enzyme that breaks down ROS, Sod3, were decreased in cells lacking Pho84. A connection between this phosphate transporter and the ROS-detoxifying enzyme was identified in the Target of Rapamycin (TOR) pathway, to which Pho84 is known to provide activating signals when phosphate is abundant. Small molecules that block Pho84 activity impair the ability of C. albicans to detoxify ROS. Since humans manage phosphate differently than fungi and have no Pho84 homolog, a drug that inhibits Pho84 could disable the defense of the fungus against the host.
Published: 2018

27. Cochaperone Activity of Human Butyrate-Induced Transcript 1 Facilitates Hepatitis C Virus Replication through an Hsp90-Dependent Pathway

Author: Kohji Moriishi, Takayuki Abe, Yoshiharu Matsuura, Tamotsu Yoshimori, Shuhei Taguwa, Hiroto Kambara, Hideki Tani, Tetsuro Suzuki, Hiroko Omori, and Yoshio Mori
Subjects: Protein Folding, Immunology, Hepacivirus, Kidney, Virus Replication, Microbiology, Cell Line, Cell Line, Tumor, Virology, Heat shock protein, Humans, HSP90 Heat-Shock Proteins, NS5A, Gene, Hydro-Lyases, Messenger RNA, Gene knockdown, biology, Intracellular Signaling Peptides and Proteins, RNA, Molecular biology, Hsp90, Virus-Cell Interactions, Gene Expression Regulation, Liver, Insect Science, Chaperone (protein), biology.protein, Molecular Chaperones
Abstract: Hepatitis C virus (HCV) nonstructural protein 5A (NS5A) is a component of the replication complex consisting of several host and viral proteins. We have previously reported that human butyrate-induced transcript 1 (hB-ind1) recruits heat shock protein 90 (Hsp90) and FK506-binding protein 8 (FKBP8) to the replication complex through interaction with NS5A. To gain more insights into the biological functions of hB-ind1 in HCV replication, we assessed the potential cochaperone-like activity of hB-ind1, because it has significant homology with cochaperone p23, which regulates Hsp90 chaperone activity. The chimeric p23 in which the cochaperone domain was replaced with the p23-like domain of hB-ind1 exhibited cochaperone activity comparable to that of the authentic p23, inhibiting the glucocorticoid receptor signaling in an Hsp90-dependent manner. Conversely, the chimeric hB-ind1 in which the p23-like domain was replaced with the cochaperone domain of p23 resulted in the same level of recovery of HCV propagation as seen in the authentic hB-ind1 in cells with knockdown of the endogenous hB-ind1. Immunofluorescence analyses revealed that hB-ind1 was colocalized with NS5A, FKBP8, and double-stranded RNA in the HCV replicon cells. HCV replicon cells exhibited a more potent unfolded-protein response (UPR) than the parental and the cured cells upon treatment with an inhibitor for Hsp90. These results suggest that an Hsp90-dependent chaperone pathway incorporating hB-ind1 is involved in protein folding in the membranous web for the circumvention of the UPR and that it facilitates HCV replication.
Published: 2009

28. Antitumor studies. Part 1: Design, synthesis, antitumor activity, and AutoDock study of 2-deoxo-2-phenyl-5-deazaflavins and 2-deoxo-2-phenylflavin-5-oxides as a new class of antitumor agents

Author: Shinji Miura, Eiichi Akaho, Hiroyuki Hayakawa, Hamed I. Ali, Hiroto Kambara, Hisao Ikeya, Fumio Yoneda, Yutaka Kawashima, Tomohisa Nagamatsu, Keiichiro Tomita, Takehiro Yamagishi, and Noriyuki Ashida
Subjects: Models, Molecular, Time Factors, Protein Conformation, Stereochemistry, Flavin analog, Clinical Biochemistry, Pharmaceutical Science, Antineoplastic Agents, Stereoisomerism, Ligands, Biochemistry, Structure-Activity Relationship, Nude mouse, In vivo, Cell Line, Tumor, Flavins, Drug Discovery, Humans, Structure–activity relationship, Computer Simulation, antitumor activity, Binding site, Molecular Biology, IC50, Cell Proliferation, Binding Sites, Molecular Structure, biology, Chemistry, Organic Chemistry, Oxides, protein tyrosine kinase, AutoDock, biology.organism_classification, Protein Structure, Tertiary, Cell culture, Drug Design, Molecular Medicine, Drug Screening Assays, Antitumor
Abstract: Novel 2-deoxo-2-phenyl-5-deazaflavins and 2-deoxo-2-phenylflavin-5-oxides were prepared as a new class of antitumor agents and showed significant antitumor activities against NCI-H 460, HCT 116, A 431, CCRF-HSB-2, andKB cell lines. In vivo investigation, 2-deoxo-10-methyl-2-phenyl-5-deazaflavin exhibited the effective antitumor activity against A 431 human adenocarcinoma cells transplanted subcutaneously into nude mouse. Furthermore, AutoDock study has been done by binding of the flavin analogs into PTK pp60(c-src), where a good correlation between their IC(50) and AutoDock binding free energy was exhibited. In particular, 2-deoxo-2-phenylflavin-5-oxides exhibited the highest potential binding affinity within the binding pocket of PTK.
Published: 2007

29. Regulation of Interferon-stimulated gene BST2 by a lncRNA transcribed from a shared bidirectional promoter

Author: Dawid Krokowski, Raul Jobava, Maria Hatzoglou, Donald D. Anthony, Hiroto Kambara, Elizabeth Zebrowski, Saba Valadkhan, Lalith Gunawardane, and Lenche Kostadinova
Subjects: Genetics, lcsh:Immunologic diseases. Allergy, Gene knockdown, Transcription, Genetic, bidirectional promoters, Interferon-stimulated gene, Immunology, lncRNAs, RNA, Promoter, BST2, Biology, IFN response, Downregulation and upregulation, Transcription (biology), interferon response, Transcriptional regulation, Immunology and Allergy, transcriptional regulation, lcsh:RC581-607, Gene, Original Research
Abstract: Recent genome-wide studies have revealed the presence of thousands of long non-protein-coding RNAs (lncRNAs), some of which may play critical roles in the cell. We have previously shown that a large number of lncRNAs show differential expression in response to interferon (IFN)α stimulation in primary human cells. Here, we show that a subset of IFN-induced lncRNAs are positioned in proximity of protein-coding IFN-stimulated genes (ISGs). The majority of gene pairs originated from bidirectional promoters and showed positively correlated expression. We focused our analysis on a pair consisting of the known protein-coding ISG, BST2, and an un-studied putative lncRNA originating from the promoter region of BST2 in a divergent orientation. We showed that this transcript was a multi-exonic, polyadenylated long RNA that lacked protein-coding capacity. BST2 and the lncRNA were both induced in response to IFNα in diverse cell types. The induction of both genes was mediated through the JAK–STAT pathway, suggesting that IFN-stimulated response elements within the shared promoter activated the transcription of both genes. RNAi-mediated knock-down of the lncRNA resulted in down-regulation of BST2, and we could show that this down-regulation occurred at the level of transcription. Forced overexpression of this lncRNA, which we named BST2 IFN-Stimulated Positive Regulator (BISPR), resulted in up-regulation of BST2, indicating that the regulation of expression of BST2 by BISPR is mediated through interactions involving BISPR RNA itself, rather than the impact of its transcription from an adjacent locus. Importantly, upon IFN stimulation, transcriptional activation of BISPR preceded the induction of BST2, suggesting that expression of BISPR facilitated the initiation of transcription in its paired protein-coding gene. The lncRNA-mediated transcriptional regulation described in this study may help govern the expression of additional protein-coding RNAs involved in IFN response and other cellular processes.
Published: 2015

30. Enhancing the Pharmacist's Professional Status through Collaborative Prescribing: US and Japanese Perspectives

Author: Sara Brouse, Koichi Kawasaki, Hiroto Kambara, and Eiichi Akaho
Subjects: Protocol (science), medicine.medical_specialty, business.industry, health care facilities, manpower, and services, education, Pharmacist, Professional status, Pharmaceutical care, Pharmacotherapy, Nursing, health services administration, Family medicine, Health care, Medicine, business, health care economics and organizations, Medical literature
Abstract: The objective of this mini-review is to examine collaborative prescribing between pharmacists and physicians as a means of enhancing the professional status of pharmacists. It considers the history of such collaboration, the current status of healthcare and the pharmacists' impact on patients' health, defines collaborative drug therapy management (CDTM), discusses the legal considerations in CDTM and the requirements for CDTM, and gives a Japanese perspective. We found that many pharmacists in the United States have concluded collaborative practice agreements with physicians under a written legal protocol regarding the selection, adoption and monitoring of new dosage forms and types of medications, management of routine follow-up with patients, and refill medications. Through collaborative drug therapy management, pharmacists can contribute to increasing compliance with drug therapy regimens and reducing the rate of adverse drug events.However, pharmacists in the United States and Japan face several obstacles in becoming fully successful in their efforts in these regards. Among them are gaining physicians' support and current regulations that prevent pharmacists from prescribing in many areas. In Japan, the prohibition of pharmacists having physical contact with the patients by law is another obstacle. These obstacles can be overcome by documenting the benefits for costs and clinical outcomes arising from allowing pharmacists to play a greater role in the medical literature.
Published: 2005

31. An Update on Community Pharmacy Practice in the United States

Author: Eric J. MacLaughlin, Eiichi Akaho, Hiroto Kambara, Koichi Kawasaki, and Mitsuko Hirai
Subjects: Clinical pharmacy, medicine.medical_specialty, business.industry, Family medicine, Health care, Pharmacist, Medicine, Pharmacy practice, Pharmacy, Salary, Hospital pharmacy, Medical prescription, business
Abstract: There are several types of community pharmacies in the United States. The most common are independents, chains, and supermarket pharmacies. There are pharmacies that specialize in home healthcare supplies/devices, compounding, and infusions. Currently, there is a great shortage of pharmacists in the United States, and as a result salaries are high (2002 median salary was ¥ 9.5 million). Pharmacy rules and regulations are quite different in the United States. One “prescription” is usually one medication order. Additionally, there are no limits on the number of prescriptions one pharmacist may fill per day. Many pharmacists are starting to provide direct patient-care services. These clinical services may include cholesterol screenings, manual blood pressure measurements, hemoglobin A1C testing, blood glucose testing, osteoporosis screenings, vaccinations, and many others.Community pharmacy practice is changing quickly in the U.S. With the current shortage of pharmacists, and large prescription volume, pharmacies will be challenged to provide for the medication needs of their patients. While direct patientcare services are increasing in community pharmacies, many challenges will need to be overcome before their provision becomes widespread.
Published: 2004

32. Amicrobial pustular dermatosis in two patients with immunological abnormalities

Author: Keiji Iwatsuki, K. Maehara, Michiyo Kuyama, Osamu Yamasaki, Jirô Arata, Hiroto Kambara, A. Ohara, Wataru Fujimoto, M. Saitoh, and M. Egusa
Subjects: Autoimmune disease, Pathology, medicine.medical_specialty, Discoid lupus erythematosus, Anti-nuclear antibody, business.industry, Acanthosis, Dermatology, medicine.disease, Pustulosis, Cyclosporin a, Sicca syndrome, medicine, Prednisolone, medicine.symptom, business, medicine.drug
Abstract: We report two patients with severe amicrobial pustular dermatosis with immunological abnormalities: a 63-year-old woman with a 30-year-history of discoid lupus erythematosus and sicca syndrome, and a 35-year-old woman with high levels of gamma-globulinemia and positive antinuclear antibodies. Both patients presented with crusty and eroded erythematous plaques studded with aseptic pustules on the back, face, and scalp. Histological examination showed acanthosis, neutrophilic exocytosis to the epidermis, and neutrophilic and lymphocytic infiltration with nuclear dust in the dermis. These patients were diagnosed as having "amicrobial pustulosis associated with autoimmune diseases". The eruptions improved with combination treatment of oral prednisolone with cyclosporin A or diaminodiphenylsulphone. Although the pathogenesis remains unclear, amicrobial pustular dermatosis might be one of the cutaneous complications in autoimmune diseases.
Published: 2002

33. Production ofχc1andχc2inpp¯Collisions ats=1.8TeV

Author: F. Palmonari, A. Safonov, R. Madrak, C. Nelson, L. Malferrari, R. Thurman-Keup, S. Wolinski, Cyp Ngan, S. Nahn, J. Mayer, J. Strologas, J. D. Lewis, M. Kirk, G. Velev, M. P. Schmidt, E. Moore, A. Rakitine, M. Shimojima, T. Le Compte, H. Wenzel, Douglas Benjamin, H. Sato, P. F. Derwent, P. Koehn, Kostantinos Kordas, R. E. Hughes, M. Mangano, Chunhui Chen, M. Brozovic, Petar Maksimovic, S. Baroiant, M. Lancaster, S. Bailey, A. Gordon, D. Winn, T. Kuwabara, Minu Kim, P. Azzi-Bacchetta, G. Latino, C. Pagliarone, S. Galeotti, Robin Erbacher, Jane Nachtman, Jacobo Konigsberg, Joel Goldstein, W. Carithers, S. Murgia, Aw Chan, M. Gold, J. Berryhill, W-M. Yao, J. Wolinski, Duncan Carlsmith, B. Flaugher, Tong Gao, C. Bromberg, W. Caskey, L. Demortier, Y. C. Chen, M. T. Cheng, A. Nomerotski, P. Gris, S. Lusin, A. M. Lee, W. Hao, Michael Schmitt, J. Incandela, K. T. Pitts, F. Happacher, P. T. Chang, Robert M Harris, R. J. Miller, A. Mukherjee, A. Brandl, A. Solodsky, J. G. Loken, Dario Bisello, A. Bhatti, E. Hafen, A. G. Clark, M. L. Chu, D. Dagenhart, Q. Fan, A. Tollestrup, Mosè Mariotti, T. Devlin, J. Conway, G. Pope, A. M. Walsh, John Huth, N. B. Wallace, Andrea Castro, J. W. Chapman, D. Khazins, J. Lys, P. Murat, Stefano Belforte, Henrik Jeldtoft Jensen, R. Roser, F. Azfar, Y. Iwata, G. Signorelli, Daniela Bortoletto, E. Kovacs, T. Ohmoto, P. Schlabach, F. Strumia, Andrea Bocci, Tommaso Dorigo, A. Byon-Wagner, Tetsuo Arisawa, C. Hill, Hajin Kim, M. Mishina, H. H. Williams, M. Cordelli, G. Busetto, Brian L Winer, Y. Gotra, J. Cassada, J. Tseng, C. Ferretti, G. Introzzi, A. Stefanini, D. Lucchesi, S. Tkaczyk, David Stuart, K. Karr, R. G. Feild, A. Bodek, L. Ristori, J. Iwai, C. Yosef, A. Meyer, Maxwell Chertok, R. Culbertson, R. G. Wagner, C. R. Hall, Anindya Roy, N. Eddy, Wendy Taylor, R. Vilar, G. Bauer, Alessandro Cerri, J. A.J. Matthews, F. de Jongh, R. J. Hollebeek, Fumihiko Ukegawa, J. I. Lamoureux, Mark Kruse, A. B. Wicklund, W. K. Sakumoto, J. F. de Troconiz, P. Tamburello, A. D. Hardman, F. D. Snider, T. Moulik, J. Cranshaw, F. Ptohos, A. Robinson, W. Trischuk, W. J. Robertson, S. P. Pappas, F. Zetti, T. Watanabe, J. B. Liu, Z. Yu, Luca Scodellaro, J. Boudreau, R. D. Kennedy, G. W. Foster, D. Glenzinski, K. Kondo, Hiroshi Ikeda, A. Korn, Y. Bonushkin, David Saltzberg, K. L. Byrum, P. Giromini, Anna Zanetti, H. Kasha, A. Scribano, Nicola Bacchetta, A. Munar, G. P. Yeh, S. Wolbers, D. W. Gerdes, C. Grosso-Pilcher, Marjorie Shapiro, Paul Tipton, B. Bevensee, J.I. Friedman, A. J. Slaughter, F. Bedeschi, Andrea Sansoni, Ivan-Kresimir Furic, S. Donati, W. Bokhari, E. E. Schmidt, K. D. Hoffman, H. Toyoda, C. H. Wang, T. Handa, G. Pauletta, S. Vejcik, G. Piacentino, K. Takikawa, T. Ohsugi, R. C. Webb, M. Campbell, D. Waters, P. Giannetti, Igor Volobouev, M. J. Shochet, Tony Liss, E. Buckley-Geer, Manfred Paulini, P. Sphicas, P. Amaral, D. Reher, J. Budagov, R. L. Lander, T. L. Watts, J. Siegrist, Umesh Joshi, J. Lancaster, S. H. Kim, R. Handler, Y. S. Chung, P. Gatti, H. Nakada, M. Dell'Orso, T. Takano, S. Miscetti, Riccardo Paoletti, M. Binkley, R. Vidal, H. Niu, N. Bruner, M. G. Albrow, S. Zucchelli, S. Dell'Agnello, P. Sinervo, R. E. Blair, F. Rimondi, Timothy Knight Nelson, T. Affolder, Virgil E Barnes, P. F. Shepard, S. H. Oh, T. Kaneko, R. Kephart, W. Ashmanskas, Paolo Calafiura, S. Lami, T. Shah, Teresa Rodrigo, K. Lee, Jay Dittmann, D. Cauz, Kevin Einsweiler, Christoph Paus, I. Yu, T. J. Phillips, P. K. Teng, T. Wilkes, Gino Bolla, J. P. Berge, C. Green, Saverio D'Auria, J. Carlson, Roger Moore, M. H. Kirby, Christina Mesropian, Yongsun Kim, N. Moggi, Frank Hartmann, Guenakh Mitselmakher, A. Barbaro-Galtieri, P. Lukens, D. Vucinic, F. Semeria, P. S. Chang, Alan Sill, Th. Müller, Louis Lyons, S. R. Amendolia, K. Sliwa, T. Shibayama, V. Papadimitriou, L. Christofek, K. Anikeev, T. A. Keaffaber, Y. Morita, S. C. van den Brink, M. Loreti, G. Bellettini, J. Wahl, T. Suzuki, C. Sanchez, P. N. Singh, Yanwen Liu, Avraham Yagil, A. Menzione, J. Valls, D. Wolinski, D. Errede, Daijin Kim, K. Kelley, S. Leone, Beom Jun Kim, Itsuo Nakano, Michele Gallinaro, A. Pompos, A. Semenov, G. Martignon, S. Klimenko, L. Santi, C. Haber, L. Rosenson, L. Groer, H. S. Budd, Alan Garfinkel, K. Kurino, Y. Kato, D. Neuberger, G. Guillian, P. McIntyre, A. S. Thompson, A. Heiss, I. Fiori, A. W. Scott, D. Partos, J. Guimaraes Da Costa, E. McKigney, S. Worm, J. P. Fernandez, R. Takashima, D. Amidei, A. T. Goshaw, Catherine Newman-Holmes, Andrew Beretvas, Richard Dante St Denis, James Proudfoot, M. Riveline, R. Oishi, I. V. Gorelov, T. Speer, L. E. Kirsch, Y. Seiya, M. Popovic, M. Lindgren, James Bensinger, B. Tannenbaum, Hiroto Kambara, L. Pescara, N. Lai, J. Wyss, G. Chiarelli, Kazuhiko Hara, Kenneth Bloom, L. Holloway, Leonard Spiegel, I.E. Chirikov-Zorin, K. Terashi, Nicola Turini, M. W. Bailey, S. Errede, J. Patrick, A. T. Laasanen, M. M. Deninno, Jay Hauser, Matthew Jones, W. H. Bell, R. D. Field, James D. Olsen, J. Spalding, G. P. Grim, Masaaki Tanaka, W. C. Wester, M. Tecchio, A. J. Martin, L. Pondrom, E. Wicklund, H. Minato, Fedor Prokoshin, Yasuo Fukui, J. E. Elias, J. N. Bellinger, T. Okusawa, P. Mazzanti, Daniel P Cronin-Hennessy, J. S. Miller, Kevin Burkett, Kenichi Hatakeyama, S. Blusk, Jochen Jens Heinrich, J. Done, Shin-Shan Yu, J. Huston, M. Franklin, A. Ribon, Pierre Savard, J. C. Freeman, A. Köngeter, C. I. Ciobanu, J. Steele, Andrey Korytov, V. Glagolev, B. A. Barnett, Giorgio Apollinari, Teruki Kamon, Craig Blocker, Kaori Maeshima, T. Vaiciulis, P. Wilson, M. Menguzzato, S. E. Kuhlmann, G. Chlachidze, Christopher Neu, J. Yoh, W. Orejudos, Frank Chlebana, A. Akopian, Maurice Garcia-Sciveres, A. Reichold, T. Yoshida, M. Guenther, Sally Seidel, M. Mulhearn, W. Riegler, R. Cropp, F. Spinella, R. L. Wagner, K. Goulianos, P. de Barbaro, O. Pukhov, K. Ragan, S. Segler, Maria Spiropulu, Matthew Herndon, R. J. Tesarek, S. Rolli, Benjamin Kilminster, C. Smith, Barry Blumenfeld, C. Holck, E. James, T. Nakaya, H. Akimoto, M. J. Wang, T. Miao, R. M. Haas, S. R. Hahn, Xin Wu, J. Antos, Konstanty Sumorok, N. S. Lockyer, Roberto Rossin, Joe Kroll, K. S. McFarland, S. Tether, M. Bishai, K. Tollefson, Stephan Lammel, T. Kikuchi, P. Yeh, Lawrence Nodulman, A. Connolly, T. Asakawa, G. Punzi, E. Engels, M. Barone, and M. Kelly
Subjects: Physics, Particle physics, Meson, General Physics and Astronomy, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We have measured the ratio of prompt production rates of the charmonium states {chi}{sub c1} and {chi}{sub c2} in 110 pb{sup -1} of p{ovr p} collisions at sqrt[s] = 1.8 TeV. The photon from their decay into J/{psi}{gamma} is reconstructed through conversion into e{sup +}e{sup -} pairs. The energy resolution this technique provides makes the resolution of the two states possible. We find the ratio of production cross sections {sigma}{sub {chi}{sub c2}}/{sigma}{sub {chi}{sub c1}} = 0.96{+-}0.27(stat){+-}0.11(syst) for events with p{sub {tau}}(J/{psi})>4.0 GeV/c, |{eta}(J/{psi})| 1.0 GeV/c.
Published: 2001

34. First Measurement of the RatioB(t→Wb)/B(t→Wq)and Associated Limit on the Cabibbo-Kobayashi-Maskawa Element|Vtb

Author: M. J. Shochet, S. Bailey, A. Connolly, T. Asakawa, G. Velev, P. Sphicas, P. K. Teng, B. Flaugher, H. Sato, Michael Schmitt, J. Incandela, M. L. Chu, Virgil E Barnes, Arshad Saleem Bhatti, G. Punzi, E. Engels, J. Conway, C. Pagliarone, S. Galeotti, P. Schlabach, Mosè Mariotti, G. F. Tartarelli, C. Green, G. Pope, J. Cassada, V. Nagaslaev, T. Kaneko, J. Wolinski, M. Barone, M. Kelly, T. Kuwabara, P. S. Chang, S. Tkaczyk, David Stuart, W. K. Sakumoto, R. J. Miller, A. Nomerotski, R. G. Feild, Robert M Harris, C. Grosso-Pilcher, A. Menzione, A. Mukherjee, J. G. Loken, W. Carithers, S. Murgia, G. P. Yeh, Andrea Castro, G. W. Foster, Andrea Bocci, D. Glenzinski, Tommaso Dorigo, F. Palmonari, Hiroto Kambara, Q. Fan, A. Tollestrup, C. Ferretti, S. Lami, T. Shah, Tony Liss, T. Devlin, L. Malferrari, D. Khazins, Kenneth Bloom, R. Thurman-Keup, Cyp Ngan, J. P. Berge, M. J. Wang, T. Miao, R. M. Haas, R. Vilar, Stephan Lammel, Paolo Calafiura, Teresa Rodrigo, D. Lucchesi, K. Lee, T. J. Phillips, K. Karr, K. Anikeev, F. Zetti, A. Byon-Wagner, Tetsuo Arisawa, C. Hill, S. Nahn, J. Berryhill, L. Christofek, D. Errede, N. Eddy, P. Lukens, Y. Morita, R. J. Hollebeek, R. D. Field, R. Vidal, H. Niu, N. Bruner, J. I. Lamoureux, M. Brozovic, T. Kikuchi, P. Yeh, P. F. Shepard, S. H. Oh, Xin Wu, E. Moore, P. F. Derwent, Minu Kim, T. Suzuki, C. Sanchez, V. Papadimitriou, James Bensinger, Daijin Kim, M. Lancaster, Y. Kato, D. Neuberger, G. Guillian, R. Takashima, J. Guimaraes Da Costa, C. I. Ciobanu, N. Lai, Kazuhiko Hara, Lawrence Nodulman, G. Piacentino, R. D. Kennedy, Itsuo Nakano, T. L. Watts, N. S. Lockyer, Joel Goldstein, A. Pompos, A. S. Thompson, A. Heiss, Roberto Rossin, L. Groer, Alan Garfinkel, R. L. Wagner, Catherine Newman-Holmes, P. McIntyre, A. Scribano, Y. C. Chen, A. Gordon, J. Siegrist, F. Ptohos, Tong Gao, W. J. Robertson, I. V. Gorelov, Christoph Paus, J. Carlson, S. Miscetti, D. Dagenhart, M. Lindgren, T. Speer, R. Kephart, Matthew Jones, Joe Kroll, J. Steele, K. Goulianos, M. Riveline, P. Gris, N. Moggi, Frank Hartmann, Fedor Prokoshin, Andrey Korytov, B. Tannenbaum, T. Watanabe, J. D. Lewis, J. Tseng, Y. Iwata, S. Lusin, J. Wyss, F. Happacher, P. T. Chang, Thomas LeCompte, Dario Bisello, S. C. van den Brink, Alan Sill, M. Kirk, L. Pescara, D. O. Litvintsev, V. Glagolev, J. Strologas, Yasuo Fukui, Daniela Bortoletto, W. Bokhari, J. Boudreau, R. Madrak, G. Bellettini, James D. Olsen, E. Hafen, J. Spalding, T. Okusawa, J. Valls, P. Mazzanti, J. F. de Troconiz, G. Chiarelli, C. Nelson, P. Koehn, G. Martignon, K. S. McFarland, A. Korn, D. Wolinski, M. Campbell, D. Waters, P. Giannetti, M. M. Deninno, S. Tether, Kostantinos Kordas, Y. Bonushkin, P. Tamburello, L. Holloway, David Saltzberg, K. Kelley, S. Leone, J. Lancaster, R. Handler, Y. S. Chung, M. Bishai, M. Binkley, G. P. Grim, Masaaki Tanaka, R. E. Hughes, H. S. Budd, J. Done, J. Huston, M. G. Albrow, K. Tollefson, A. Robinson, S. Baroiant, Chunhui Chen, Petar Maksimovic, S. Vejcik, Hiroshi Ikeda, T. Takano, S. Dell'Agnello, S. E. Kuhlmann, Douglas Benjamin, W. C. Wester, J. Patrick, G. Chlachidze, D. Winn, P. de Barbaro, K. Takikawa, R. C. Webb, J. Wahl, Yanwen Liu, O. Pukhov, F. DeJongh, R. Oishi, Robin Erbacher, W-M. Yao, F. Strumia, Christopher Neu, Igor Volobouev, L. Demortier, M. Dell'Orso, A. G. Clark, S. Wolinski, C. Smith, J. Yoh, Andrea Sansoni, Ivan-Kresimir Furic, C. Holck, S. Donati, A. Meyer, Jacobo Konigsberg, C. Haber, J. Mayer, K. Ragan, Guenakh Mitselmakher, P. Gatti, M. Tecchio, B. A. Barnett, Giorgio Apollinari, A. M. Lee, E. James, W. Ashmanskas, M. T. Cheng, Teruki Kamon, Craig Blocker, Louis Lyons, M. Shimojima, W. Hao, A. Solodsky, M. Cordelli, Kaori Maeshima, G. Busetto, Brian L Winer, T. Vaiciulis, Sally Seidel, R. G. Wagner, P. N. Singh, P. Wilson, Andrew Beretvas, A. Brandl, M. Menguzzato, S. P. Pappas, Luca Scodellaro, J. B. Liu, John Huth, M. W. Bailey, L. Rosenson, P. Amaral, M. Mulhearn, W. Riegler, C. R. Hall, S. Zucchelli, R. E. Blair, R. Cropp, K. L. Byrum, J. W. Chapman, F. Rimondi, Mark Kruse, F. Spinella, M. Gold, H. H. Williams, Kenichi Hatakeyama, E. Kovacs, T. Ohmoto, J. P. Fernandez, Anindya Roy, L. E. Kirsch, G. Introzzi, A. Stefanini, Maxwell Chertok, M. Franklin, P. Giromini, Anna Zanetti, Paul Tipton, Z. Yu, Marjorie Shapiro, A. J. Slaughter, D. Reher, E. Buckley-Geer, J. Budagov, Riccardo Paoletti, P. Sinervo, J. C. Freeman, R. L. Lander, B. Bevensee, H. Kasha, Jane Nachtman, Jay Dittmann, D. Cauz, A. Köngeter, Michele Gallinaro, Richard Dante St Denis, K. T. Pitts, S. Worm, D. Amidei, A. T. Goshaw, I.E. Chirikov-Zorin, A. J. Martin, L. Pondrom, E. Wicklund, S. Errede, J. E. Elias, F. Azfar, W. H. Bell, J. Lys, Manfred Paulini, H. Nakada, R. Roser, Saverio D'Auria, O. Lobban, Yongsun Kim, J.I. Friedman, C. H. Wang, L. Santi, Timothy Knight Nelson, Beom Jun Kim, N. B. Wallace, A. Bodek, J. Iwai, C. Yosef, Alessandro Cerri, Umesh Joshi, S. H. Kim, Th. Müller, S. R. Amendolia, K. Sliwa, S. Klimenko, Hajin Kim, M. Mishina, Y. Gotra, Fumihiko Ukegawa, A. B. Wicklund, E. E. Schmidt, K. D. Hoffman, H. Toyoda, T. Handa, H. Wenzel, G. Latino, Aw Chan, Duncan Carlsmith, Stefano Belforte, Henrik Jeldtoft Jensen, L. Ristori, R. Culbertson, W. Trischuk, Nicola Bacchetta, F. Bedeschi, T. Affolder, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, T. A. Keaffaber, K. Kurino, I. Fiori, A. W. Scott, D. Partos, James Proudfoot, A. Safonov, Avraham Yagil, Gino Bolla, M. P. Schmidt, A. Rakitine, A. Semenov, P. Azzi-Bacchetta, C. Bromberg, E. McKigney, S. Blusk, Jochen Jens Heinrich, Y. Seiya, M. Popovic, P. Murat, Leonard Spiegel, Shin-Shan Yu, A. Ribon, G. Bauer, A. D. Hardman, F. D. Snider, T. Moulik, J. Cranshaw, S. Wolbers, D. W. Gerdes, Pierre Savard, Kevin Einsweiler, T. Wilkes, M. Mangano, Wendy Taylor, J. A.J. Matthews, Roger Moore, M. H. Kirby, W. Caskey, Christina Mesropian, A. M. Walsh, K. Kondo, A. Munar, G. Pauletta, I. Yu, T. Shibayama, M. Loreti, K. Terashi, Nicola Turini, A. T. Laasanen, Jay Hauser, H. Minato, J. N. Bellinger, Daniel P Cronin-Hennessy, J. S. Miller, Kevin Burkett, S. Segler, Maria Spiropulu, Matthew Herndon, R. J. Tesarek, S. Rolli, Benjamin Kilminster, Barry Blumenfeld, T. Nakaya, H. Akimoto, S. R. Hahn, J. Antos, Konstanty Sumorok, W. Orejudos, Frank Chlebana, A. Akopian, Maurice Garcia-Sciveres, A. Reichold, T. Yoshida, M. Guenther, and T. Ohsugi
Subjects: Physics, Particle physics, Unitarity, Cabibbo–Kobayashi–Maskawa matrix, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, High Energy Physics::Experiment, Fermilab, Three generations, Collider Detector at Fermilab, Silicon vertex detector
Abstract: We present the first measurement of the ratio of branching fractions R equivalent to B(t --> Wb)/B(t --> Wq) from pa collisions at roots = 1.8 TeV. The data set corresponds to 109 pb(-1) of data recorded by the Collider Detector at Fermilab during the 1992-95 Tevatron run. We measure R = 0.94(-0.24)(+0.31)(stat + syst) or R > 0.61 (0.56) at 90% (95)% C.L., in agreement with the standard model predictions. This measurement yields a limit on the Cabibbo-Kobayashi-Maskawa quark mixing matrix element \V-tb\ under the assumption of three generations and unitarity.
Published: 2001

35. Measurement of the Decay Amplitudes ofB0→J/ψK*0andBs0→J/ψφDecays

Author: Stefano Belforte, W. Carithers, S. Murgia, Henrik Jeldtoft Jensen, P. Sphicas, L. Ristori, P. Schlabach, J. Berryhill, L. Malferrari, Avraham Yagil, J. Cassada, Tong Gao, D. Dagenhart, Virgil E Barnes, R. Vidal, H. Niu, A. Cerri, G. W. Foster, F. Ptohos, Nicola Bacchetta, J. Wyss, G. Chiarelli, E. McKigney, J. Wahl, N. Bruner, Yanwen Liu, T. Kaneko, F. Bedeschi, P. S. Chang, Sally Seidel, M. M. Deninno, J. D. Lewis, J. Tseng, M. Brozovic, Minu Kim, W. J. Robertson, M. Kirk, Joel Goldstein, P. F. Shepard, S. H. Oh, Leonard Spiegel, M. Tecchio, Kevin Einsweiler, T. Le Compte, A. Menzione, P. Koehn, S. Lusin, C. Smith, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, Wendy Taylor, J. A.J. Matthews, Y. Iwata, R. E. Hughes, T. Watanabe, Chunhui Chen, Petar Maksimovic, S. Tkaczyk, David Stuart, R. G. Feild, Tomoko Yoshida, J. Boudreau, G. P. Yeh, W. Orejudos, Frank Chlebana, D. Winn, M. Riveline, Tony Liss, A. Safonov, J. Proudfoot, M. Mulhearn, W. Riegler, Paolo Calafiura, Teresa Rodrigo, Itsuo Nakano, K. Lee, T. J. Phillips, A. Korn, S. Wolinski, G. Piacentino, G. Signorelli, G. Velev, Daniela Bortoletto, C. I. Ciobanu, J. R. Bensinger, L. Groer, Alan Garfinkel, Roger Moore, M. H. Kirby, W. Bokhari, C. Holck, F. Strumia, P. McIntyre, S. Lami, Y. Bonushkin, R. Takashima, A. Akopian, David Saltzberg, M. Garcia-Sciveres, R. J. Miller, Y. Morita, E. S. Hafen, K. Kondo, P. Lukens, A. Mukherjee, E. James, M. Campbell, V. Papadimitriou, P. Murat, M. P. Schmidt, T. Shah, S. Miscetti, D. Waters, P. Giannetti, H. Sato, A. Munar, G. Pauletta, A. Rakitine, C. H. Wang, R. S. Guo, J. Strologas, L. Nodulman, Andrea Sansoni, S. Donati, P. F. Derwent, R. Handler, Y. S. Chung, Andrea Bocci, A. Reichold, P. Azzi-Bacchetta, F. Spinella, Daijin Kim, M. Lancaster, M. Lindgren, S. Dell'Agnello, B. Tannenbaum, J. Steele, G. Bauer, A. D. Hardman, F. D. Snider, T. Shibayama, K. Anikeev, C. Bromberg, R. L. Wagner, K. Goulianos, G. Bellettini, M. Shimojima, G. Martignon, T. Affolder, J. Cranshaw, Hiroto Kambara, J. P. Berge, I. Yu, Tommaso Dorigo, Andrey Korytov, Kenneth Bloom, M. Guenther, D. P. Benjamin, K. Takikawa, D. Errede, T. Ohsugi, T. Kuwabara, L. Christofek, A. Heiss, R. Vilar, P. de Barbaro, P. Gatti, W. Ashmanskas, V. V. Glagolev, C. Pagliarone, S. Galeotti, S. Vejcik, T. Takano, S. Wolbers, O. Pukhov, W-M. Yao, Y. Kato, D. Neuberger, G. Guillian, J. Guimaraes Da Costa, Louis Lyons, Robert M Harris, T. Suzuki, M. J. Shochet, M. Mangano, Stephan Lammel, A. Robinson, M. Loreti, D. W. Gerdes, Gino Bolla, C. Mesropian, A. Pompos, R. D. Field, J. Wolinski, L. Holloway, J. Patrick, K. Terashi, Nicola Turini, M. Gold, F. Zetti, A. Byon-Wagner, Tetsuo Arisawa, A. Semenov, M. L. Chu, A. Nomerotski, Mosè Mariotti, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, T. A. Keaffaber, A. T. Laasanen, K. Kurino, R. Cropp, T. Kikuchi, J. W. Chapman, L. Pescara, I. Fiori, M. Cordelli, A. W. Scott, D. Partos, G. Busetto, Brian L Winer, Catherine Newman-Holmes, Andrew Beretvas, Andrea Castro, S. Bailey, P. Yeh, William Trischuk, T. Speer, A. M. Walsh, S. Blusk, Jochen Jens Heinrich, T. Nakaya, H. Akimoto, N. Eddy, R. G. Wagner, F. de Jongh, Joe Kroll, J. G. Loken, E. Kovacs, T. Ohmoto, P. K. Teng, B. Flaugher, S. P. Pappas, S. E. Kuhlmann, P. Nicolaidi, C. Green, T. L. Watts, Michael Schmitt, J. Incandela, C. Haber, J. B. Liu, S. R. Hahn, D. Khazins, C. Ferretti, W. K. Sakumoto, J. Conway, R. K. Plunkett, R. J. Hollebeek, K. Karr, G. Chlachidze, G. Pope, Y. Seiya, A. Connolly, P. Amaral, D. Lucchesi, S. Geer, Jacobo Konigsberg, F. Palmonari, R. Thurman-Keup, T. Asakawa, S. Zucchelli, Shin-Shan Yu, R. Kephart, M. T. Cheng, C. Grosso-Pilcher, Cyp Ngan, A. Ribon, R. E. Blair, F. Rimondi, J. Antos, L. Demortier, A. Scribano, N. Moggi, Frank Hartmann, S. Nahn, A. Solodsky, G. Punzi, E. Engels, J. Yoh, Matthew Jones, J. I. Lamoureux, K. S. McFarland, Alan Sill, M. Musy, S. Tether, Konstanty Sumorok, B. A. Barnett, Giorgio Apollinari, J. Valls, D. Wolinski, E. Moore, K. Kelley, S. Leone, M. Barone, M. Kelly, Jay Hauser, James D. Olsen, Teruki Kamon, J. F. de Troconiz, P. Tamburello, Craig Blocker, A. M. Lee, H. S. Budd, J. Spalding, A. Gordon, Masaaki Tanaka, H. Minato, S. Segler, Kaori Maeshima, Hiroshi Ikeda, K. Tollefson, W. C. Wester, R. C. Webb, D. Amidei, Igor Volobouev, J. N. Bellinger, M. Binkley, T. Vaiciulis, Daniel P Cronin-Hennessy, W. Hao, J. S. Miller, Kevin Burkett, P. Wilson, A. Brandl, M. G. Albrow, M. Menguzzato, Maria Spiropulu, Matthew Herndon, John Huth, S. Rolli, Benjamin Kilminster, Barry Blumenfeld, H. H. Williams, M. J. Wang, T. Miao, R. M. Haas, G. Introzzi, A. Stefanini, M. Atac, Xin Wu, D. Reher, J. Budagov, N. S. Lockyer, Roberto Rossin, R. D. Kennedy, J. Siegrist, R. Madrak, C. Nelson, Jane Nachtman, K. T. Pitts, F. Azfar, Manfred Paulini, H. Nakada, J. Carlson, S. C. van den Brink, R. Demina, Yongsun Kim, Y. C. Chen, M. Dell'Orso, R. Oishi, L. Santi, S. Worm, A. T. Goshaw, K. Ragan, Guenakh Mitselmakher, Luca Scodellaro, S. Errede, K. L. Byrum, P. Giromini, M. W. Bailey, Anna Zanetti, H. Kasha, A. Meyer, P. N. Singh, Maxwell Chertok, L. Rosenson, W. Erdmann, Z. Yu, Marjorie Shapiro, A. J. Slaughter, E. Buckley-Geer, Riccardo Paoletti, P. Sinervo, L. E. Kirsch, A. G. Clark, J. Lys, R. Roser, J.I. Friedman, C. R. Hall, J. Mayer, Kenichi Hatakeyama, C. Paus, M. Franklin, Mark Kruse, Paul Tipton, J. C. Freeman, B. Bevensee, K. Kordas, Jay Dittmann, D. Cauz, A. Köngeter, Michele Gallinaro, I.E. Chirikov-Zorin, A. J. Martin, L. Pondrom, E. Wicklund, J. E. Elias, B. J. Kim, R. Culbertson, N. B. Wallace, A. Bodek, J. Iwai, C. Yosef, Umesh Joshi, J. Cooper, S. H. Kim, H. Wenzel, G. Latino, D. Theriot, Th. Müller, Aw Chan, Duncan Carlsmith, S. R. Amendolia, K. Sliwa, S. Klimenko, Hajin Kim, M. Mishina, Y. Gotra, Fumihiko Ukegawa, A. B. Wicklund, E. E. Schmidt, K. D. Hoffman, H. Toyoda, N. Lai, Kazuhiko Hara, T. Handa, Q. Fan, Fedor Prokoshin, A. Tollestrup, T. Devlin, Pierre Savard, M. Popovic, Yasuo Fukui, T. Okusawa, P. Mazzanti, J. Done, and J. Huston
Subjects: Physics, Amplitude, Tevatron, General Physics and Astronomy, Parity (physics), Atomic physics, Polarization (waves)
Abstract: An angular analysis of B{sup 0}{yields}J/{psi}K*{sup 0} and B{sup 0}{sub s}{yields}J/{psi}{phi} has been used to determine the decay amplitudes with parity-even longitudinal (A{sub 0}) and transverse (A{sub {parallel}}) polarization and parity-odd transverse (A{sub {perpendicular}}) polarization. The measurements are based on 190 B{sup 0} and 40 B{sup 0}{sub s} candidates obtained from 89 pb{sup -1} of p{ovr p} collisions at the Fermilab Tevatron. The longitudinal decay amplitude dominates with |A{sub 0}|{sup 2} = 0.59{+-}0.06{+-}0.01 for B{sup 0} and |A{sub 0}|{sup 2} = 0.61{+-}0.14{+-}0.02 for B{sup 0}{sub s} decays. The parity-odd amplitude is found to be small with |A{sub {perpendicular}}|{sup 2} = 0.13{sub -0.09}{sup +0.12}{+-}0.06 for B{sup 0} and |A{sub {perpendicular}}|{sup 2} = 0.23{+-}0.19{+-}0.04 for B{sup 0}{sub s} decays.
Published: 2000

36. Measurement ofJ/ψandψ(2S)Polarization inpp¯Collisions at√s=1.8TeV

Author: W. Carithers, S. Murgia, A. Byon-Wagner, Tetsuo Arisawa, J. Berryhill, J. D. Lewis, A. Safonov, E. Scodellaro, P. Koehn, Kostantinos Kordas, R. E. Hughes, Chunhui Chen, Petar Maksimovic, Andrea Castro, D. Winn, X. Wu, S. Blusk, Jochen Jens Heinrich, Tong Gao, D. Khazins, N. Eddy, R. J. Hollebeek, J. Strologas, C. Smith, J. I. Lamoureux, James Bensinger, C. Holck, C. Pagliarone, K. Karr, Shin-Shan Yu, G. Velev, Sally Seidel, S. Galeotti, R. D. Kennedy, H. Sato, M. L. Chu, E. James, Jacobo Konigsberg, M. T. Cheng, J. Lys, J. Siegrist, Gino Bolla, Hajin Kim, M. Mishina, Mosè Mariotti, Y. Gotra, Fumihiko Ukegawa, Matthew Jones, James D. Olsen, A. Ribon, M. P. Schmidt, J. P. Berge, N. Lai, Kazuhiko Hara, Fedor Prokoshin, Yasuo Fukui, K. L. Byrum, A. Solodsky, P. Giromini, Anna Zanetti, H. Kasha, B. Hinrichsen, J. Wolinski, A. Nomerotski, A. Rakitine, P. Azzi-Bacchetta, Pierre Savard, Maxwell Chertok, D. Dagenhart, T. Kuwabara, P. De Barbara, Jane Nachtman, L. Christofek, J. Spalding, R. Roser, J.I. Friedman, C. Bromberg, J. G. Loken, T. Okusawa, P. Mazzanti, A. B. Wicklund, T. L. Watts, J. Wahl, A. Scribano, M. Mulhearn, W. Riegler, A. Tollestrup, Masaaki Tanaka, W. C. Wester, F. Strumia, J. Wyss, J. Done, F. DeJongh, A. Semenov, Stefano Belforte, S. E. Kuhlmann, P. Nicolaidi, T. Suzuki, J. Huston, E. E. Schmidt, G. Chiarelli, C. Ferretti, S. Lami, C. H. Wang, K. T. Pitts, T. Shah, Andrea Sansoni, J. Tseng, S. Donati, Joe Kroll, K. D. Hoffman, H. Toyoda, M. M. Deninno, D. Lucchesi, Henrik Jeldtoft Jensen, Jay Hauser, G. Chlachidze, Z. Yu, Marjorie Shapiro, P. Gatti, R. Cropp, Umesh Joshi, J. Cooper, J. Boudreau, K. Anikeev, A. Pompos, A. J. Slaughter, D. Errede, S. H. Kim, L. Ristori, F. Azfar, W-M. Yao, H. Minato, K. Kurino, Louis Lyons, A. Connolly, G. Piacentino, K. S. McFarland, S. Tether, F. Spinella, M. Gold, P. Schlabach, R. Kephart, T. Handa, E. Buckley-Geer, M. Binkley, Riccardo Paoletti, T. Asakawa, J. Cassada, W. Trischuk, M. Tecchio, A. Korn, Y. Kato, D. Neuberger, Beom Jun Kim, S.G. Klimenko, M. G. Albrow, J. Yoh, G. Guillian, Manfred Paulini, K. Tollefson, J. Guimaraes Da Costa, Y. Seiya, H. Nakada, M. Popovic, S. Miscetti, P. Sinervo, C. I. Ciobanu, H. Wenzel, N. Moggi, Frank Hartmann, David Saltzberg, S. Tkaczyk, Andrew Beretvas, Nicola Bacchetta, Catherine Newman-Holmes, J. N. Bellinger, G. Punzi, E. Engels, E. Kovacs, T. Ohmoto, Christoph Paus, J. Carlson, F. Bedeschi, David Stuart, S. C. van den Brink, Daniel P Cronin-Hennessy, Th. Müller, Alan Sill, Kenichi Hatakeyama, Yc Liu, R. G. Feild, M. Franklin, T. Speer, G. W. Foster, M. Musy, Yongsun Kim, S. R. Amendolia, K. Sliwa, S. Bailey, J. Steele, M. J. Wang, G. Bellettini, T. Miao, R. M. Haas, T. Affolder, M. Barone, J. S. Miller, Kevin Burkett, G. Martignon, M. Kelly, G. P. Yeh, P. Murat, Tony Liss, J. Valls, Andrey Korytov, W. K. Sakumoto, Wendy Taylor, J. A.J. Matthews, S. Wolinski, M. Cordelli, M. Brozovic, G. Busetto, Brian L Winer, L. Santi, R. L. Wagner, A. Barbaro-Galtieri, J. F. de Troconiz, P. Tamburello, Roger Moore, M. H. Kirby, D. Wolinski, Minu Kim, K. Kelley, S. Leone, G. Latino, D. Theriot, K. Goulianos, R. G. Wagner, R. Culbertson, N. B. Wallace, Stephan Lammel, Christina Mesropian, R. Oishi, R. S. Guo, B. Flaugher, P. F. Derwent, Paolo Calafiura, Teresa Rodrigo, K. Lee, T. J. Phillips, V. Glagolev, J. Mayer, N. S. Lockyer, Joel Goldstein, S. P. Pappas, Michael Schmitt, D. Vucinic, F. Semeria, J. C. Freeman, Hiroshi Ikeda, T. A. Keaffaber, Y. C. Chen, Roberto Rossin, H. S. Budd, J. Incandela, Y. Morita, M. Lancaster, M. Shimojima, Aw Chan, G. Bauer, A. D. Hardman, F. D. Snider, R. C. Webb, T. Shibayama, M. Loreti, I. Furie, A. Bodek, J. B. Liu, M. W. Bailey, R. J. Miller, J. Conway, S. Geer, J. Iwai, T. Kikuchi, S. Lusin, F. Happacher, P. T. Chang, J. Cranshaw, Igor Volobouev, P. Yeh, O. Pukhov, Dario Bisello, A. Bhatti, C. Yosef, A. Mukherjee, Alessandro Cerri, K. Ragan, G. Pope, K. Terashi, Nicola Turini, A. T. Laasanen, Lawrence Nodulman, E. Hafen, S. Wolbers, Duncan Carlsmith, P. Amaral, I. Fiori, A. W. Scott, D. W. Gerdes, B. A. Barnett, Giorgio Apollinari, F. Ptohos, S. Zucchelli, R. E. Blair, Andrea Bocci, A. Köngeter, F. Rimondi, Tommaso Dorigo, W. J. Robertson, Teruki Kamon, H. H. Williams, C. Grosso-Pilcher, G. Introzzi, A. Stefanini, T. Watanabe, D. Partos, Craig Blocker, R. Vilar, Kaori Maeshima, W. Bokhari, S. Vejcik, T. Takano, I.E. Chirikov-Zorin, M. Campbell, D. Waters, P. Giannetti, T. Vaiciulis, F. Zetti, M. Atac, Kevin Einsweiler, A. J. Martin, D. Reher, R. Handler, Q. Fan, L. Pondrom, E. Wicklund, James Proudfoot, Y. Bonusnkin, P. Wilson, M. Menguzzato, R. Vidal, J. E. Elias, S. Dell'Agnello, J. Budagov, H. Niu, N. Bruner, T. Devlin, T. Ohsugi, W. Orejudos, M. J. Shochet, Frank Chlebana, P. F. Shepard, A. Akopian, S. H. Oh, Maurice Garcia-Sciveres, A. Reichold, P. Lukens, T. Yoshida, M. Guenther, V. Papadimitriou, Daijin Kim, P. K. Teng, Itsuo Nakano, S. Segler, L. Groer, Alan Garfinkel, C. Green, P. McIntyre, C. Haber, Y. Iwata, Hiroto Kambara, G. Signorelli, Daniela Bortoletto, R. K. Plunkett, Maria Spiropulu, Kenneth Bloom, Matthew Herndon, A. Heiss, R. D. Field, A. Robinson, S. Rolli, Benjamin Kilminster, K. Takikawa, F. Palmonari, L. Malferrari, R. Thurman-Keup, Cyp Ngan, Barry Blumenfeld, S. Nahn, L. Pescara, E. Moore, A. Gordon, T. Nakaya, H. Akimoto, S. R. Hahn, L. Demortier, A. M. Lee, J. Antos, Konstanty Sumorok, Guenakh Mitselmakher, W. Hao, P. N. Singh, A. Brandl, L. Rosenson, John Huth, L. E. Kirsch, J. W. Chapman, R. Madrak, C. Nelson, Douglas Benjamin, R. Demina, Jay Dittmann, D. Cauz, Michele Gallinaro, A. G. Clark, C. R. Hall, Mark Kruse, Paul Tipton, B. Bevensee, S. Worm, D. Amidei, A. T. Goshaw, S. Errede, W. Ashmanskas, W. Erdmann, P. Sphicas, Virgil E Barnes, T. Kaneko, P. S. Chang, A. Menzione, M. Dell'Orso, R. Takashima, M. Lindgren, B. Tannenbaum, Thomas LeCompte, L. Holloway, J. Patrick, M. Mangano, A. M. Walsh, K. Kondo, A. Munar, G. Pauletta, I. Yu, Avraham Yagil, M. Kirk, E. McKigney, Leonard Spiegel, and Robert M Harris
Subjects: Physics, Meson, Astrophysics::High Energy Astrophysical Phenomena, Hadron, General Physics and Astronomy, Particle accelerator, Polarization (waves), law.invention, Nuclear physics, Angular distribution, law, High Energy Physics::Experiment, Nuclear Experiment, Collider Detector at Fermilab
Abstract: We have measured the polarization of J/psi and psi(2S) mesons produced in pp collisions at sqrt[s] = 1.8 TeV, using data collected at the Collider Detector at Fermilab during 1992-1995. The polarization of promptly produced J/psi [psi(2S)] mesons is isolated from those produced in B-hadron decay, and measured over the kinematic range 4 [5.5]
Published: 2000

37. Search for Second and Third Generation Leptoquarks Including Production via Technicolor Interactions inpp¯Collisions at√s=1.8TeV

Author: S. Wolinski, J. Mayer, J. D. Lewis, T. L. Watts, M. Kirk, M. Shimojima, T. Le Compte, P. Koehn, Y. Iwata, R. Kephart, G. Signorelli, Daniela Bortoletto, N. Moggi, Frank Hartmann, Kenichi Hatakeyama, Kostantinos Kordas, Alan Sill, R. E. Hughes, M. Franklin, Chunhui Chen, Petar Maksimovic, Jacobo Konigsberg, S. Bailey, M. Brozovic, A. Robinson, D. Winn, J. Valls, Minu Kim, D. Wolinski, M. T. Cheng, K. Takikawa, J. C. Freeman, K. Kelley, S. Leone, F. Strumia, Manfred Paulini, A. Scribano, Joel Goldstein, Y. C. Chen, M. Gold, Andrea Sansoni, B. Flaugher, Michael Schmitt, J. Incandela, H. S. Budd, R. J. Miller, S. Donati, P. Gatti, W. Ashmanskas, H. Nakada, Louis Lyons, S. Lusin, T. Ohsugi, F. Happacher, Andrew Beretvas, P. T. Chang, A. Mukherjee, Dario Bisello, D. Dagenhart, A. Bhatti, W. Carithers, S. Murgia, M. J. Shochet, E. Hafen, J. Conway, A. Köngeter, A. Connolly, T. Asakawa, A. Solodsky, R. Takashima, Andrea Bocci, Yongsun Kim, G. Pope, Matthew Jones, M. J. Wang, T. Miao, R. M. Haas, James D. Olsen, G. Velev, J. Spalding, Masaaki Tanaka, W. C. Wester, Tommaso Dorigo, J. Tseng, M. Binkley, P. K. Teng, Xin Wu, J. Berryhill, M. G. Albrow, E. Kovacs, H. Sato, T. Ohmoto, C. Green, R. Vilar, C. H. Wang, G. Punzi, M. Lindgren, B. Tannenbaum, L. Santi, E. Engels, M. Musy, J. Wahl, F. Palmonari, J. Wyss, N. S. Lockyer, Roberto Rossin, L. Malferrari, R. Thurman-Keup, F. Zetti, J. Strologas, K. Kondo, Umesh Joshi, P. De Barbaro, Cyp Ngan, G. Chiarelli, F. Ptohos, I.E. Chirikov-Zorin, Joe Kroll, M. Barone, J. Boudreau, T. Kuwabara, M. L. Chu, S. Nahn, J. Cooper, Robert M Harris, Mosè Mariotti, A. Munar, Maxwell Chertok, W. J. Robertson, S. H. Kim, G. Pauletta, A. J. Martin, L. Holloway, R. L. Wagner, S. Blusk, M. M. Deninno, P. Schlabach, E. Moore, M. Kelly, A. Korn, J. Cassada, L. Pondrom, E. Wicklund, Tong Gao, K. S. McFarland, S. Tether, K. Goulianos, S. Worm, Hajin Kim, M. Mishina, D. Amidei, Luca Scodellaro, K. L. Byrum, Y. Bonushkin, David Saltzberg, P. Giromini, Jochen Jens Heinrich, Anna Zanetti, H. Kasha, A. Gordon, Y. Gotra, Fumihiko Ukegawa, J. Patrick, Andrea Castro, P. Sphicas, K. Tollefson, D. Khazins, J. E. Elias, B. Hinrichsen, Virgil E Barnes, G. W. Foster, T. Watanabe, M. Tecchio, A. T. Goshaw, K. Karr, L. Demortier, S. Vejcik, C. Smith, A. B. Wicklund, T. Takano, C. Holck, T. Kaneko, Z. Yu, Jane Nachtman, E. James, W. Bokhari, I. Yu, Marjorie Shapiro, P. S. Chang, J. Lys, O. Pukhov, R. Roser, K. Ragan, A. Menzione, A. J. Slaughter, E. E. Schmidt, A. M. Lee, Th. Müller, S. R. Amendolia, Avraham Yagil, K. T. Pitts, S. Tkaczyk, E. Buckley-Geer, David Stuart, J.I. Friedman, Riccardo Paoletti, P. Sinervo, J. F. de Troconiz, R. G. Feild, P. Tamburello, W. K. Sakumoto, W-M. Yao, K. Sliwa, M. Campbell, D. Waters, W. Hao, P. Giannetti, Christoph Paus, J. Carlson, F. Azfar, Sally Seidel, G. P. Yeh, James Bensinger, K. D. Hoffman, Tony Liss, H. Toyoda, S. C. van den Brink, E. McKigney, R. Handler, N. Lai, Kazuhiko Hara, Beom Jun Kim, Paolo Calafiura, Teresa Rodrigo, Hiroshi Ikeda, S. Geer, Shin-Shan Yu, C. Haber, K. Lee, T. J. Phillips, A. Brandl, R. C. Webb, Y. Morita, W. Riegler, R. Oishi, John Huth, Fedor Prokoshin, R. Cropp, Yasuo Fukui, A. Ribon, C. Grosso-Pilcher, S. Dell'Agnello, M. W. Bailey, F. Spinella, T. Okusawa, Leonard Spiegel, Igor Volobouev, J. W. Chapman, M. Cordelli, P. Mazzanti, S. Lami, T. Shah, R. Vidal, T. Handa, H. H. Williams, M. Mangano, G. Busetto, Brian L Winer, J. Done, J. Huston, R. G. Wagner, R. S. Guo, G. Introzzi, P. F. Derwent, K. Anikeev, Pierre Savard, H. Niu, N. Bruner, A. M. Walsh, S. Errede, F. de Jongh, A. Stefanini, D. Errede, S. P. Pappas, M. Lancaster, J. P. Berge, Y. Kato, D. Neuberger, G. Guillian, J. Guimaraes Da Costa, M. Atac, J. B. Liu, Catherine Newman-Holmes, R. Culbertson, N. B. Wallace, T. Speer, Wendy Taylor, J. A.J. Matthews, P. Amaral, P. F. Shepard, S. H. Oh, L. Christofek, D. Reher, T. Suzuki, J. Budagov, H. Wenzel, Stephan Lammel, Allan G Clark, Roger Moore, S. Zucchelli, R. E. Blair, M. H. Kirby, F. Rimondi, Christina Mesropian, A. Pompos, T. Kikuchi, A. Bodek, J. Iwai, C. Yosef, P. Yeh, Lawrence Nodulman, Alessandro Cerri, P. Lukens, T. Shibayama, Itsuo Nakano, M. Loreti, V. Papadimitriou, Daijin Kim, W. Erdmann, L. Groer, Alan Garfinkel, P. McIntyre, A. Heiss, K. Terashi, Nicola Turini, A. T. Laasanen, Jay Hauser, L. Pescara, Hiroto Kambara, G. Latino, H. Minato, Kenneth Bloom, D. Theriot, Jay Dittmann, D. Cauz, S.G. Klimenko, J. N. Bellinger, Daniel P Cronin-Hennessy, R. D. Field, J. S. Miller, Kevin Burkett, Michele Gallinaro, Aw Chan, Duncan Carlsmith, C. R. Hall, Mark Kruse, Paul Tipton, B. Bevensee, Q. Fan, A. Tollestrup, T. Devlin, C. Pagliarone, S. Galeotti, J. Wolinski, A. Nomerotski, Kevin Einsweiler, J. G. Loken, C. Ferretti, Gino Bolla, D. Lucchesi, M. Dell'Orso, G. Piacentino, Guenakh Mitselmakher, P. N. Singh, S. Miscetti, L. Rosenson, G. Bellettini, G. Martignon, L. E. Kirsch, A. Semenov, R. Madrak, C. Nelson, Douglas Benjamin, R. Demina, A. Byon-Wagner, Tetsuo Arisawa, N. Eddy, R. J. Hollebeek, J. I. Lamoureux, R. D. Kennedy, J. Siegrist, Y. Seiya, Stefano Belforte, M. Popovic, Henrik Jeldtoft Jensen, L. Ristori, W. Trischuk, P. Murat, Nicola Bacchetta, F. Bedeschi, M. P. Schmidt, G. Bauer, W. Orejudos, Frank Chlebana, A. D. Hardman, F. D. Snider, A. Rakitine, A. Akopian, Maurice Garcia-Sciveres, J. Cranshaw, A. Reichold, P. Azzi-Bacchetta, S. Wolbers, C. Bromberg, T. Yoshida, T. Affolder, D. W. Gerdes, A. Barbaro-Galtieri, M. Guenther, D. Vucinic, F. Semeria, T. A. Keaffaber, K. Kurino, I. Fiori, A. W. Scott, D. Partos, James Proudfoot, T. Nakaya, H. Akimoto, B. A. Barnett, Giorgio Apollinari, Teruki Kamon, S. R. Hahn, Craig Blocker, Kaori Maeshima, J. Antos, Konstanty Sumorok, T. Vaiciulis, S. Segler, P. Wilson, R. K. Plunkett, Maria Spiropulu, M. Menguzzato, Matthew Herndon, S. Rolli, Benjamin Kilminster, S. E. Kuhlmann, P. Nicolaidi, G. Chlachidze, Barry Blumenfeld, J. Yoh, C. I. Ciobanu, Yc Liu, J. Steele, Andrey Korytov, and V. Glagolev
Subjects: Physics, Quark, Particle physics, Missing energy, High Energy Physics::Phenomenology, General Physics and Astronomy, Technicolor, Standard Model, Nuclear physics, Color model, High Energy Physics::Experiment, Leptoquark, Neutrino, Collider Detector at Fermilab
Abstract: We report the results of a search for second and third generation leptoquarks using 88 pb{sup -1} of data recorded by the Collider Detector at Fermilab. Color triplet technipions, which play the role of scalar leptoquarks, are investigated due to their potential production in decays of strongly coupled color octet technirhos. Events with a signature of two heavy flavor jets and missing energy may indicate the decay of a second (third) generation leptoquark to a charm (bottom) quark and a neutrino. As the data are found to be consistent with standard model expectations, mass limits are determined.
Published: 2000

38. Limits on Light Gravitino Production and New Processes with Large Missing Transverse Energy inpp¯Collisions ats=1.8TeV

Author: R. Madrak, C. Nelson, A. Scribano, Y. Bonushkin, J. F. de Troconiz, P. Tamburello, R. Takashima, Hiroshi Ikeda, R. C. Webb, I.E. Chirikov-Zorin, Wendy Taylor, J. A.J. Matthews, D. Amidei, Igor Volobouev, C. H. Wang, M. Lindgren, M. Binkley, R. L. Wagner, Maxwell Chertok, Roger Moore, B. Tannenbaum, A. J. Martin, M. Brozovic, L. Pondrom, E. Wicklund, M. G. Albrow, Thomas LeCompte, K. Goulianos, Robert M Harris, Joe Kroll, Minu Kim, R. Demina, J. E. Elias, Joel Goldstein, B. J. Kim, L. Demortier, D. Dagenhart, N. Lai, Kazuhiko Hara, T. Shibayama, M. Loreti, Fedor Prokoshin, Yasuo Fukui, T. Okusawa, P. Mazzanti, J. Done, J. Huston, R. K. Plunkett, Marjorie Shapiro, M. Garcia-Sciveres, R. J. Miller, P. de Barbaro, J. Tseng, S. Lami, T. Shah, M. Dell'Orso, A. M. Lee, Andrea Castro, A. J. Slaughter, L. Holloway, J. Patrick, K. Terashi, Nicola Turini, A. T. Laasanen, A. Mukherjee, K. Kondo, D. Khazins, E. Buckley-Geer, Riccardo Paoletti, K. S. McFarland, Andrea Bocci, W. Hao, K. Anikeev, D. P. Benjamin, S. Tether, S. Lusin, F. Happacher, P. T. Chang, J. Boudreau, Guenakh Mitselmakher, D. Errede, F. Palmonari, Dario Bisello, Sally Seidel, F. Ptohos, A. Munar, A. Bhatti, Tommaso Dorigo, R. Vilar, A. Brandl, K. Karr, P. Sinervo, K. Tollefson, J. Lys, G. Pauletta, P. N. Singh, A. Korn, P. Sphicas, R. Roser, Virgil E Barnes, John Huth, Y. Kato, D. Neuberger, G. Guillian, D. Cauz, T. Kaneko, S. Blusk, Jochen Jens Heinrich, J.I. Friedman, G. Piacentino, L. Rosenson, F. Zetti, David Saltzberg, G. Velev, Catherine Newman-Holmes, W. Carithers, S. Murgia, P. S. Chang, W. J. Robertson, T. Watanabe, J. Carlson, W. Riegler, Kevin Einsweiler, H. S. Budd, S. Miscetti, R. Thurman-Keup, Gino Bolla, Cyp Ngan, A. Menzione, T. Speer, S. C. van den Brink, T. L. Watts, L. E. Kirsch, H. Sato, Shin-Shan Yu, S. Vejcik, T. Takano, A. Byon-Wagner, R. Cropp, Tetsuo Arisawa, H. H. Williams, A. Ribon, N. Eddy, J. Berryhill, C. Mesropian, M. J. Wang, T. Miao, I. Yu, R. Kephart, W. Bokhari, Jacobo Konigsberg, N. Moggi, Frank Hartmann, Alan Sill, R. J. Hollebeek, Kenichi Hatakeyama, F. Spinella, G. Introzzi, A. Stefanini, M. Atac, C. Paus, M. Franklin, J. I. Lamoureux, J. Wahl, Stephan Lammel, G. Bellettini, G. Martignon, A. Semenov, M. T. Cheng, T. Kuwabara, Pierre Savard, S. Nahn, R. Oishi, M. Campbell, D. Waters, Yanwen Liu, J. Valls, C. Chen, D. Wolinski, V. V. Glagolev, P. Giannetti, K. Kelley, S. Leone, C. Pagliarone, Xin Wu, R. Handler, D. Reher, Avraham Yagil, J. C. Freeman, J. Budagov, R. D. Kennedy, S. Galeotti, J. W. Chapman, M. Gold, A. Solodsky, N. S. Lockyer, S. Dell'Agnello, J. Wolinski, A. Nomerotski, Roberto Rossin, M. W. Bailey, S. Wolinski, Tong Gao, J. Mayer, Jay Hauser, J. Siegrist, T. Kikuchi, E. Moore, P. Yeh, H. Minato, E. McKigney, J. P. Berge, J. G. Loken, P. Schlabach, J. Cassada, C. Smith, Y. Seiya, M. Popovic, J. D. Lewis, A. Köngeter, C. Holck, M. Kirk, M. Shimojima, C. Haber, C. Ferretti, A. Cerri, L. Christofek, D. Lucchesi, E. James, P. Lukens, P. Koehn, Kostantinos Kordas, J. N. Bellinger, R. E. Hughes, T. Suzuki, A. Pompos, A. Gordon, G. W. Foster, Petar Maksimovic, P. Murat, Daniel P Cronin-Hennessy, L. Nodulman, E. Kovacs, T. Ohmoto, R. S. Guo, J. S. Miller, Kevin Burkett, A. Connolly, V. Papadimitriou, T. Asakawa, P. F. Derwent, D. Winn, F. DeJongh, M. Lancaster, Y. Iwata, J. Proudfoot, Hiroto Kambara, S. Bailey, Leonard Spiegel, G. Bauer, A. D. Hardman, F. D. Snider, G. Signorelli, Daniela Bortoletto, B. Flaugher, Tomoko Yoshida, Michael Schmitt, J. Incandela, G. Punzi, E. Engels, M. Musy, A. Heiss, J. Cranshaw, S. Wolbers, D. W. Gerdes, M. Barone, J. Conway, G. Pope, J. Wyss, M. Kelly, G. Chiarelli, Kenneth Bloom, A. Robinson, L. Pescara, M. M. Deninno, K. Takikawa, T. Ohsugi, M. J. Shochet, M. Mangano, P. K. Teng, C. Green, H. Wenzel, A. M. Walsh, M. Tecchio, G. Latino, D. Theriot, J. Strologas, R. D. Field, Aw Chan, Duncan Carlsmith, M. L. Chu, Mosè Mariotti, S. Tkaczyk, David Stuart, Q. Fan, A. Tollestrup, R. G. Feild, T. Devlin, G. P. Yeh, Hajin Kim, M. Mishina, Y. Gotra, Fumihiko Ukegawa, A. B. Wicklund, Tony Liss, E. E. Schmidt, K. D. Hoffman, H. Toyoda, W. K. Sakumoto, W-M. Yao, Teresa Rodrigo, T. Handa, S. Geer, C. Grosso-Pilcher, T. J. Phillips, Y. Morita, E. S. Hafen, R. Vidal, H. Niu, M. Cordelli, G. Busetto, Brian L Winer, N. Bruner, R. G. Wagner, P. F. Shepard, S. H. Oh, S. P. Pappas, J. B. Liu, M. P. Schmidt, A. Rakitine, P. Amaral, Itsuo Nakano, P. Azzi-Bacchetta, S. Zucchelli, R. E. Blair, F. Rimondi, J. R. Bensinger, L. Groer, Alan Garfinkel, P. McIntyre, C. Bromberg, Jane Nachtman, Stefano Belforte, Henrik Jeldtoft Jensen, L. Ristori, K. T. Pitts, L. Malferrari, W. Trischuk, Nicola Bacchetta, F. Bedeschi, F. Azfar, T. Affolder, Matthew Jones, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, T. A. Keaffaber, S. Cihangir, K. Kurino, Manfred Paulini, H. Nakada, I. Fiori, A. W. Scott, D. Partos, James D. Olsen, J. Spalding, Yongsun Kim, Y. C. Chen, L. Santi, Masaaki Tanaka, W. C. Wester, F. Strumia, Luca Scodellaro, K. L. Byrum, S. Donati, P. Gatti, P. Giromini, W. Ashmanskas, Anna Zanetti, H. Kasha, R. Culbertson, N. B. Wallace, Louis Lyons, B. Hinrichsen, A. Bodek, J. Iwai, C. Yosef, Umesh Joshi, J. Cooper, S. H. Kim, J. Guimaraes da Costa, Th. Müller, S. R. Amendolia, K. Sliwa, S. Klimenko, Andrew Beretvas, A. G. Clark, C. R. Hall, Mark Kruse, A. Sansoni, Paul Tipton, T. Nakaya, H. Akimoto, S. R. Hahn, B. Bevensee, J. Antos, K. Ragan, Konstanty Sumorok, Frank Chlebana, A. Akopian, Jay Dittmann, A. Reichold, M. Guenther, S. Segler, Michele Gallinaro, Maria Spiropulu, Matthew Herndon, S. Rolli, Barry Blumenfeld, S. Worm, A. T. Goshaw, S. Errede, W. Erdmann, B. A. Barnett, Giorgio Apollinari, Teruki Kamon, Craig Blocker, Kaori Maeshima, T. Vaiciulis, P. Wilson, M. Menguzzato, C. I. Ciobanu, J. Steele, Andrey Korytov, S. E. Kuhlmann, P. Nicolaidi, G. Chlachidze, and J. Yoh
Subjects: Physics, Particle physics, Physics beyond the Standard Model, Graviton, General Physics and Astronomy, Superpartner, Particle accelerator, Supersymmetry, Standard Model, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Gravitino, Collider Detector at Fermilab
Abstract: Events collected by the Collider Detector at Fermilab (CDF) with an energetic jet plus large missing transverse energy can be used to search for physics beyond the standard model. We see no deviations from the expected backgrounds and set upper limits on the production of new processes. We consider in addition the production of light gravitinos and set a limit at 95% confidence level on the breaking scale root F greater than or equal to 217 GeV, which excludes gravitino masses smaller than 1.1 X 10(-5) eV/c(2).
Published: 2000

39. Search for Scalar Top Quark Production inpp¯Collisions ats=1.8TeV

Author: B. A. Barnett, Giorgio Apollinari, M. J. Shochet, J. D. Lewis, Joe Kroll, Teruki Kamon, M. Kirk, Craig Blocker, Kaori Maeshima, J. P. Berge, T. Le Compte, P. Koehn, Kostantinos Kordas, P. K. Teng, R. Culbertson, N. B. Wallace, C. Green, R. Takashima, S. Tether, T. Vaiciulis, R. E. Hughes, Chunhui Chen, Petar Maksimovic, L. Christofek, T. Suzuki, P. Wilson, J. F. de Troconiz, P. Tamburello, K. Tollefson, C. H. Wang, M. Lindgren, Hiroshi Ikeda, A. Bodek, A. Pompos, F. Strumia, J. Iwai, Andrea Sansoni, B. Tannenbaum, M. Menguzzato, C. Yosef, Christoph Paus, J. Carlson, S. C. van den Brink, R. C. Webb, Igor Volobouev, R. Oishi, S. Worm, M. W. Bailey, S. Donati, P. Gatti, Avraham Yagil, J. Strologas, M. E. Convery, D. Winn, Stephan Lammel, C. I. Ciobanu, Jacobo Konigsberg, D. Amidei, A. T. Goshaw, M. P. Schmidt, W. Ashmanskas, A. Rakitine, Alessandro Cerri, Louis Lyons, J. Guimaraes da Costa, W-M. Yao, L. Holloway, J. Patrick, T. L. Watts, F. Palmonari, L. Malferrari, R. Thurman-Keup, Cyp Ngan, C. Smith, G. Velev, H. Sato, J. Steele, T. Kikuchi, P. Yeh, M. Cordelli, G. Busetto, Brian L Winer, R. G. Wagner, M. T. Cheng, P. Sphicas, Virgil E Barnes, Leonard Spiegel, C. Holck, A. Solodsky, F. Ptohos, W. J. Robertson, S. Errede, Andrew Beretvas, Andrey Korytov, F. de Jongh, S. Nahn, S. Wolinski, M. Cobal, Maxwell Chertok, T. Kaneko, S. P. Pappas, J. B. Liu, Marjorie Shapiro, R. L. Wagner, P. S. Chang, A. J. Slaughter, P. Azzi-Bacchetta, R. Kephart, Kenichi Hatakeyama, E. James, E. Buckley-Geer, Riccardo Paoletti, Lawrence Nodulman, T. Watanabe, D. Dagenhart, P. Sinervo, J. Mayer, T. Kuwabara, V. Glagolev, J. Tseng, K. Goulianos, W. Bokhari, P. Amaral, E. Moore, Frank Chlebana, C. Bromberg, A. Menzione, M. Franklin, T. Affolder, M. Mangano, Umesh Joshi, J. Cooper, S. Zucchelli, R. E. Blair, M. Campbell, D. Waters, P. Giannetti, W. Erdmann, N. Moggi, Frank Hartmann, F. Rimondi, W. Carithers, S. Murgia, A. Akopian, M. Shimojima, A. Barbaro-Galtieri, J. Boudreau, E. Mc Kigney, S. Lami, T. Shah, A. M. Walsh, R. Handler, A. Connolly, S. Dell'Agnello, T. Asakawa, A. Gordon, Alan Sill, K. Anikeev, D. Vucinic, F. Semeria, T. A. Keaffaber, Matthew Jones, D. Errede, A. Scribano, S. H. Kim, S. Bailey, Y. Kato, D. Neuberger, G. Guillian, S. Tkaczyk, David Stuart, A. Korn, Y. Bonushkin, R. G. Feild, Jay Dittmann, David Saltzberg, D. Cauz, James D. Olsen, C. Bigongiari, J. Spalding, K. Kondo, A. Munar, G. Pauletta, S. E. Kuhlmann, P. Nicolaidi, B. Flaugher, Y. Iwata, Michael Schmitt, J. Incandela, G. Punzi, E. Engels, Maurice Garcia-Sciveres, A. Reichold, M. Musy, Masaaki Tanaka, Catherine Newman-Holmes, K. Kurino, J. Berryhill, G. Signorelli, Daniela Bortoletto, W. C. Wester, I. Fiori, T. Speer, A. W. Scott, K. Ragan, I. Yu, G. Chlachidze, M. J. Wang, T. Miao, J. Conway, S. Vejcik, T. Takano, P. Melese, M. Barone, M. Kelly, J. Valls, Michele Gallinaro, D. Partos, G. P. Yeh, D. Wolinski, Tony Liss, M. Binkley, J. C. Freeman, M. G. Albrow, G. Pope, K. Kelley, S. Leone, James Proudfoot, M. Gold, Robert M Harris, Stefano Belforte, T. Yoshida, Tong Gao, A. Robinson, C. D. Moore, Xin Wu, J. Yoh, M. Guenther, Andrea Castro, A. G. Clark, Teresa Rodrigo, H. S. Budd, Henrik Jeldtoft Jensen, T. J. Phillips, D. Khazins, K. Karr, C. Haber, C. R. Hall, L. Ristori, Mark Kruse, K. Takikawa, R. J. Miller, N. S. Lockyer, Paul Tipton, W. Trischuk, Roberto Rossin, A. Mukherjee, Nicola Bacchetta, Y. Morita, B. Bevensee, P. Mc Intyre, R. S. Guo, P. F. Derwent, F. Bedeschi, M. Lancaster, Andrea Bocci, E. Kovacs, T. Ohmoto, Tommaso Dorigo, R. Vilar, F. Zetti, Th. Müller, S. R. Amendolia, K. Sliwa, S. Klimenko, S. Segler, James Bensinger, Sally Seidel, J. Wyss, G. Chiarelli, N. Lai, Kazuhiko Hara, A. Köngeter, M. M. Deninno, Fedor Prokoshin, W. Riegler, Yasuo Fukui, R. K. Plunkett, T. Okusawa, Maria Spiropulu, P. Mazzanti, R. Cropp, M. Tecchio, J. Done, J. Huston, Matthew Herndon, F. Spinella, J. Lys, R. Roser, J.I. Friedman, Beom Jun Kim, I.E. Chirikov-Zorin, A. J. Martin, L. Pondrom, E. Wicklund, J. E. Elias, S. Rolli, Barry Blumenfeld, G. Piacentino, K. Borras, S. Miscetti, G. Bellettini, G. Martignon, C. Pagliarone, S. Galeotti, J. Wolinski, A. Nomerotski, J. G. Loken, T. Nakaya, H. Akimoto, C. Ferretti, D. Lucchesi, S. R. Hahn, J. Antos, Konstanty Sumorok, S. Blusk, Jochen Jens Heinrich, Shin-Shan Yu, A. Ribon, Pierre Savard, Wendy Taylor, J. A.J. Matthews, Roger Moore, Christina Mesropian, T. Shibayama, M. Loreti, K. Terashi, Nicola Turini, A. T. Laasanen, M. Brozovic, Jay Hauser, H. Minato, Minu Kim, J. N. Bellinger, Daniel P Cronin-Hennessy, J. S. Miller, Kevin Burkett, Joel Goldstein, Q. Fan, A. Tollestrup, T. Devlin, Y. C. Chen, H. Wenzel, S. Lusin, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, E. Hafen, G. Latino, D. Theriot, Aw Chan, P. Schlabach, J. Cassada, Duncan Carlsmith, Hajin Kim, M. Mishina, Y. Gotra, Fumihiko Ukegawa, A. B. Wicklund, E. E. Schmidt, G. W. Foster, K. D. Hoffman, H. Toyoda, T. Handa, J. Wahl, Yanwen Liu, Jane Nachtman, K. T. Pitts, F. Azfar, S. Cihangir, Manfred Paulini, H. Nakada, A. Byon-Wagner, Tetsuo Arisawa, N. Eddy, R. J. Hollebeek, J. I. Lamoureux, Yongsun Kim, R. D. Kennedy, L. Santi, J. Siegrist, M. Dell'Orso, Guenakh Mitselmakher, P. N. Singh, B. Bertolucci, L. Rosenson, P. De arbaro, L. E. Kirsch, R. Madrak, C. Nelson, Luca Scodellaro, K. L. Byrum, Douglas Benjamin, R. Demina, Anna Zanetti, H. Kasha, B. Hinrichsen, P. Lukens, K. S. Mc Farland, V. Papadimitriou, A. Heiss, L. Pescara, R. Vidal, H. Niu, H. H. Williams, N. Bruner, P. F. Shepard, S. H. Oh, G. Introzzi, A. Stefanini, Itsuo Nakano, L. Groer, Alan Garfinkel, M. Atac, D. Reher, J. Budagov, L. Demortier, A. M. Lee, W. Hao, A. Brandl, John Huth, J. W. Chapman, Hiroto Kambara, Kenneth Bloom, R. D. Field, M. L. Chu, Mosè Mariotti, W. K. Sakumoto, S. Geer, C. Grosso-Pilcher, Gino Bolla, A. Semenov, Y. Seiya, M. Popovic, Kevin Einsweiler, P. Murat, G. Bauer, A. D. Hardman, F. D. Snider, J. Cranshaw, S. Wolbers, D. W. Gerdes, and T. Ohsugi
Subjects: Physics, Quark, Particle physics, Top quark, Chargino, High Energy Physics::Phenomenology, Scalar (mathematics), General Physics and Astronomy, High Energy Physics::Experiment, Neutrino, Bottom quark, Collider Detector at Fermilab, Lepton
Abstract: We have searched for direct production of scalar top quarks at the Collider Detector at Fermilab in 88 pb{sup -1} of pp collisions at {radical}(s)=1.8 TeV . We assume the scalar top quark decays into either a bottom quark and a chargino or a bottom quark, a lepton, and a scalar neutrino. The event signature for both decay scenarios is a lepton, missing transverse energy, and at least two b -quark jets. For a chargino mass of 90 GeV/c{sup 2} and scalar neutrino masses of at least 40 GeV/c{sup 2} , we find no evidence for scalar top production and present upper limits on the production cross section in both decay scenarios. (c) 2000 The American Physical Society.
Published: 2000

40. Diffractive Dijets with a Leading Antiproton inp¯pCollisions ats=1800GeV

Author: C.D. Moore, P. Mc Intyre, S. Tkaczyk, David Stuart, R. S. Guo, P. F. Derwent, M. Lancaster, B. A. Barnett, Giorgio Apollinari, James Bensinger, Teruki Kamon, Craig Blocker, Kaori Maeshima, G. Piacentino, M. Mangano, N. Lai, Kazuhiko Hara, R. G. Feild, J. D. Lewis, M. Kirk, S. Miscetti, T. Nakaya, T. Vaiciulis, P. Wilson, S. Lami, T. Shah, P. Lukens, K. S. Mc Farland, V. Papadimitriou, P. Schlabach, H. Akimoto, M. Menguzzato, K. Anikeev, J. Cassada, Fedor Prokoshin, Yasuo Fukui, T. Le Compte, P. Koehn, G. P. Yeh, S. R. Hahn, A. Connolly, Hiroto Kambara, F. Strumia, A. M. Walsh, Kenneth Bloom, D. Errede, T. Asakawa, T. L. Watts, Kostantinos Kordas, Tony Liss, T. Okusawa, Stefano Belforte, P. Mazzanti, R. Takashima, J. Antos, M. Gold, R. E. Hughes, G. Bellettini, G. Martignon, S. Vejcik, Y. Kato, D. Neuberger, T. Takano, Teresa Rodrigo, G. Guillian, S. E. Kuhlmann, P. Nicolaidi, Chunhui Chen, Henrik Jeldtoft Jensen, C. Haber, G. W. Foster, Konstanty Sumorok, A. Heiss, C. H. Wang, Jay Hauser, S. Bailey, Petar Maksimovic, T. J. Phillips, G. Chlachidze, Catherine Newman-Holmes, T. Speer, M. Lindgren, L. Ristori, B. Tannenbaum, E. Kovacs, T. Ohmoto, S. Segler, Andrea Sansoni, Y. Morita, A. G. Clark, J. Done, G. Velev, R. D. Field, J. Huston, G. Punzi, E. Engels, D. Winn, R. Madrak, W. Trischuk, J. Yoh, B. Flaugher, K. Kondo, M. L. Chu, Mosè Mariotti, C. Pagliarone, S. Galeotti, C. Nelson, Michael Schmitt, J. Incandela, M. Musy, R. K. Plunkett, R. Kephart, K. Borras, C. R. Hall, Jacobo Konigsberg, H. Sato, S. Donati, Nicola Bacchetta, M. T. Cheng, L. Holloway, C. I. Ciobanu, R. L. Wagner, J. Wolinski, K. Goulianos, Maria Spiropulu, Matthew Herndon, A. Munar, Mark Kruse, J. Conway, M. Barone, M. Kelly, P. Gatti, F. Bedeschi, Paul Tipton, L. Pescara, A. Nomerotski, M. Cordelli, G. Busetto, Brian L Winer, J. Steele, J. Patrick, P. Sphicas, Joe Kroll, Maxwell Chertok, G. Pope, G. Pauletta, A. Solodsky, T. Kuwabara, J. Wahl, T. Affolder, B. Bevensee, Virgil E Barnes, Yanwen Liu, H. Minato, R. G. Wagner, N. Moggi, Frank Hartmann, Andrey Korytov, J. G. Loken, W. Ashmanskas, K. Ragan, T. Kaneko, V. Glagolev, Robert M Harris, S. Rolli, F. de Jongh, J. Wyss, W. K. Sakumoto, A. Barbaro-Galtieri, G. Chiarelli, S. Geer, I.E. Chirikov-Zorin, A. J. Martin, D. Vucinic, F. Semeria, P. S. Chang, L. Pondrom, E. Wicklund, T. A. Keaffaber, Alan Sill, S. P. Pappas, Barry Blumenfeld, M. M. Deninno, C. Ferretti, Sally Seidel, W. Carithers, S. Murgia, Douglas Benjamin, J. B. Liu, A. Menzione, Louis Lyons, J. E. Elias, K. Kurino, I. Yu, J. F. de Troconiz, P. Tamburello, Marjorie Shapiro, C. Grosso-Pilcher, D. Lucchesi, S. Worm, D. Amidei, Andrea Castro, Hiroshi Ikeda, A. T. Goshaw, J. N. Bellinger, W. Riegler, I. Fiori, A. W. Scott, A. J. Slaughter, D. Partos, M. Tecchio, Kenichi Hatakeyama, H. H. Williams, M. Franklin, R. Vidal, G. Introzzi, A. Stefanini, R. C. Webb, H. Niu, Avraham Yagil, R. Cropp, P. Amaral, Igor Volobouev, J. Guimaraes da Costa, E. Buckley-Geer, Riccardo Paoletti, D. Khazins, N. Bruner, James Proudfoot, J. Berryhill, M. Brozovic, Daniel P Cronin-Hennessy, F. Spinella, J. Valls, R. Demina, S. Tether, J. C. Freeman, Minu Kim, Frank Chlebana, P. F. Shepard, S. Zucchelli, R. E. Blair, F. Rimondi, S. H. Oh, A. Akopian, M. Atac, K. Karr, Joel Goldstein, J. Strologas, D. Wolinski, J. S. Miller, Kevin Burkett, Andrew Beretvas, M. Dell'Orso, A. Köngeter, F. Ptohos, Y. C. Chen, P. Sinervo, Itsuo Nakano, W. J. Robertson, S. Blusk, J. Lys, D. Reher, J. Budagov, Jochen Jens Heinrich, L. Groer, Alan Garfinkel, R. Culbertson, Guenakh Mitselmakher, Tong Gao, N. B. Wallace, Maurice Garcia-Sciveres, R. Roser, Christoph Paus, P. N. Singh, M. E. Convery, J. Carlson, A. Reichold, S. Lusin, S. Errede, M. P. Schmidt, K. Tollefson, J.I. Friedman, K. Kelley, S. Leone, F. Happacher, P. T. Chang, A. Rakitine, Dario Bisello, A. Bhatti, E. Hafen, S. C. van den Brink, Leonard Spiegel, L. Rosenson, T. Watanabe, W-M. Yao, P. De arbaro, E. Mc Kigney, Stephan Lammel, P. Azzi-Bacchetta, C. Bromberg, L. E. Kirsch, S. Wolinski, Shin-Shan Yu, A. Byon-Wagner, Tetsuo Arisawa, T. Yoshida, M. Guenther, Matthew Jones, N. Eddy, L. Demortier, J. Mayer, Beom Jun Kim, R. J. Hollebeek, W. Erdmann, J. I. Lamoureux, W. Bokhari, James D. Olsen, A. Ribon, J. Spalding, M. Campbell, A. M. Lee, H. S. Budd, R. D. Kennedy, W. Hao, M. Shimojima, D. Waters, P. Giannetti, Masaaki Tanaka, W. C. Wester, P. Melese, A. Brandl, John Huth, J. Siegrist, J. W. Chapman, A. Scribano, Pierre Savard, Jay Dittmann, R. Handler, M. Binkley, M. G. Albrow, R. Oishi, T. Kikuchi, A. Bodek, D. Cauz, Wendy Taylor, S. Dell'Agnello, Michele Gallinaro, J. A.J. Matthews, M. J. Wang, P. Yeh, Lawrence Nodulman, Roger Moore, J. Iwai, J. P. Berge, Christina Mesropian, C. Yosef, T. Miao, M. W. Bailey, L. Christofek, R. J. Miller, Alessandro Cerri, T. Suzuki, T. Shibayama, M. Loreti, Xin Wu, A. Pompos, Umesh Joshi, J. Cooper, A. Mukherjee, N. S. Lockyer, K. Terashi, Roberto Rossin, S. H. Kim, Nicola Turini, A. T. Laasanen, Andrea Bocci, C. Smith, Kevin Einsweiler, C. Holck, Tommaso Dorigo, E. James, Th. Müller, S. R. Amendolia, K. Sliwa, S. Klimenko, R. Vilar, F. Zetti, P. Murat, D. Dagenhart, J. Tseng, J. Boudreau, G. Bauer, A. D. Hardman, F. D. Snider, A. Korn, Y. Bonushkin, David Saltzberg, J. Cranshaw, S. Wolbers, D. W. Gerdes, Gino Bolla, A. Semenov, Y. Seiya, M. Popovic, T. Ohsugi, M. J. Shochet, P. K. Teng, C. Green, Hajin Kim, M. Mishina, Y. Gotra, Y. Iwata, G. Signorelli, Daniela Bortoletto, Fumihiko Ukegawa, A. B. Wicklund, A. Robinson, K. Takikawa, F. Palmonari, L. Malferrari, R. Thurman-Keup, Cyp Ngan, S. Nahn, E. Moore, A. Gordon, E. E. Schmidt, K. D. Hoffman, H. Toyoda, T. Handa, Jane Nachtman, H. Wenzel, K. T. Pitts, G. Latino, D. Theriot, Aw Chan, F. Azfar, Duncan Carlsmith, Luca Scodellaro, K. L. Byrum, Q. Fan, A. Tollestrup, Anna Zanetti, H. Kasha, B. Hinrichsen, T. Devlin, S. Cihangir, Manfred Paulini, H. Nakada, Yongsun Kim, and L. Santi
Subjects: Physics, Particle physics, General Physics and Astronomy, DESY, Particle accelerator, Parton, HERA, Deep inelastic scattering, law.invention, Nuclear physics, Pomeron, Antiproton, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, Collider
Abstract: We report results from a study of events with a leading antiproton of beam momentum fraction 0.905 7 GeV. Using the dijet events, we evaluate the diffractive structure function of the antiproton and compare it with expectations based on results obtained in diffractive deep inelastic scattering experiments at the DESY ep collider HERA.
Published: 2000

41. Measurement ofb-Quark Fragmentation Fractions inpp¯Collisions ats=1.8TeV

Author: Manfred Paulini, H. Nakada, G. Velev, M. Mangano, H. Sato, Yongsun Kim, Y. Bonushkin, R. Takashima, Y. C. Chen, T. Kuwabara, L. Santi, A. M. Walsh, C. H. Wang, P. Schlabach, M. Lindgren, B. Tannenbaum, J. Cassada, A. Cerri, Thomas LeCompte, A. Parri, L. Holloway, S. Tkaczyk, David Stuart, R. G. Feild, G. P. Yeh, Kenichi Hatakeyama, M. Franklin, Tony Liss, G. W. Foster, Luca Scodellaro, K. L. Byrum, S. Worm, M. Dell'Orso, Teresa Rodrigo, J. Patrick, T. L. Watts, P. Sphicas, S. E. Kuhlmann, P. Nicolaidi, T. J. Phillips, P. Giromini, Anna Zanetti, C. Smith, H. Kasha, B. Hinrichsen, Virgil E Barnes, F. Palmonari, Y. Morita, G. Chlachidze, Wendy Taylor, J. A.J. Matthews, T. Kaneko, C. Holck, E. James, E. S. Hafen, P. S. Chang, R. Kephart, J. Yoh, A. T. Goshaw, A. Menzione, F. Strumia, P. N. Singh, K. Kondo, A. Munar, R. Thurman-Keup, G. Pauletta, Cyp Ngan, S. Lami, T. Shah, Roger Moore, I. Yu, Andrea Sansoni, J. C. Freeman, P. Murat, C. I. Ciobanu, J. Wahl, S. Donati, S. Segler, Avraham Yagil, J. Wyss, G. Chiarelli, Yanwen Liu, E. McKigney, P. Lukens, I. Vologouev, L. Nodulman, Frank Hartmann, Alan Sill, Leonard Spiegel, J. Steele, Tomoko Yoshida, F. Ptohos, M. M. Deninno, P. Gatti, C. Pagliarone, W. Ashmanskas, Andrey Korytov, S. Galeotti, D. P. Benjamin, D. Errede, W. Carithers, S. Murgia, S. Nahn, Q. Fan, A. Tollestrup, Maria Spiropulu, J. Valls, Jane Nachtman, V. Papadimitriou, J. Strologas, B. S. Blusk, M. Tecchio, J. Guimaraes da Costa, D. Wolinski, K. Kelley, S. Leone, G. Bauer, Y. Kato, D. Neuberger, G. Guillian, A. D. Hardman, F. D. Snider, S. Errede, W. J. Robertson, S. Rolli, J. Cranshaw, K. T. Pitts, Hyun-Chul Kim, E. Moore, Catherine Newman-Holmes, M. P. Schmidt, Andrew Beretvas, S. Wolbers, J. Berryhill, H. Grassmann, H. S. Budd, A. Köngeter, J. Wolinski, Maxwell Chertok, T. Devlin, T. Speer, Barry Blumenfeld, A. Heiss, Joel Goldstein, D. W. Gerdes, B. A. Barnett, Giorgio Apollinari, T. Watanabe, Gino Bolla, Teruki Kamon, S. Truitt, M. Garcia-Sciveres, R. J. Miller, T. Shibayama, M. Loreti, W-M. Yao, A. Gordon, W. Bokhari, Craig Blocker, C. Mesropian, J. Lys, Kaori Maeshima, R. Roser, P. Azzi-Bacchetta, M. Mishina, C. Bromberg, L. Pescara, A. Nomerotski, Tong Gao, J. D. Lewis, A. Mukherjee, Marjorie Shapiro, A. Semenov, A. Caner, M. Kirk, J.I. Friedman, S. Lusin, F. Happacher, P. T. Chang, E. Meschi, W. Erdmann, M. Campbell, T. Nakaya, H. Akimoto, Dario Bisello, A. Bhatti, P. Wilson, A. Perazzo, J. F. de Troconiz, Matthew Jones, Andrea Bocci, A. J. Slaughter, E. Buckley-Geer, S. R. Hahn, K. Terashi, M. Menguzzato, Nicola Turini, A. T. Laasanen, P. Koehn, Kostantinos Kordas, Tommaso Dorigo, P. Giannetti, Y. Gotra, Fumihiko Ukegawa, H. H. Williams, G. Introzzi, Riccardo Paoletti, A. Stefanini, M. Cordelli, G. Busetto, Brian L Winer, A. B. Wicklund, James D. Olsen, T. Affolder, Hiroshi Ikeda, R. Vilar, R. G. Wagner, J. Spalding, R. Handler, A. Barbaro-Galtieri, P. Sinervo, R. E. Hughes, J. Antos, Y. Iwata, Chunhui Chen, Petar Maksimovic, Masaaki Tanaka, S. P. Pappas, F. Zetti, G. Signorelli, Y. Seiya, R. C. Webb, D. Amidei, M. Atac, Konstanty Sumorok, W. C. Wester, D. Vucinic, F. Semeria, Jay Hauser, Frank Chlebana, D. Reher, D. Winn, A. Akopian, T. A. Keaffaber, E. E. Schmidt, J. B. Liu, F. DeJongh, S. Dell'Agnello, J. Carlson, K. D. Hoffman, N. Moggi, Daniela Bortoletto, K. Ragan, J. Proudfoot, Jacobo Konigsberg, A. Connolly, S. C. van den Brink, K. Kurino, Jay Dittmann, J. Budagov, S. Bailey, M. T. Cheng, D. Cauz, P. Amaral, I. Fiori, A. W. Scott, A. Solodsky, D. Partos, T. Asakawa, H. Minato, H. Toyoda, C. Ferretti, M. Guenther, T. Handa, A. Robinson, B. Flaugher, S. Zucchelli, R. E. Blair, Michael Schmitt, J. Incandela, Michele Gallinaro, Stefano Belforte, F. Rimondi, R. Oishi, Henrik Jeldtoft Jensen, J. N. Bellinger, I.E. Chirikov-Zorin, K. Takikawa, T. Ohsugi, L. Ristori, H. Wenzel, D. Lucchesi, M. J. Shochet, L. Malferrari, Kevin Einsweiler, W. Trischuk, A. J. Martin, J. Conway, L. Demortier, M. W. Bailey, Nicola Bacchetta, A. M. Lee, G. Pope, Daniel P Cronin-Hennessy, F. Bedeschi, L. Pondrom, E. Wicklund, G. Punzi, W. Hao, M. Incagli, A. Brandl, A. G. Clark, John Huth, E. Engels, Ciro Bigongiari, M. Musy, J. S. Miller, Kevin Burkett, G. Latino, D. Theriot, Jochen Jens Heinrich, J. E. Elias, P. K. Teng, C. Green, S. Bertolucci, J. P. Berge, C. R. Hall, B. J. Kim, Mark Kruse, D. Knoblauch, M. Barone, Paul Tipton, Duncan Carlsmith, L. Christofek, B. Bevensee, Shin-Shan Yu, A. Ribon, G. Piacentino, M. Kelly, E. Cocca, T. Suzuki, A. Pompos, Pierre Savard, S. Miscetti, Stephan Lammel, T. Kikuchi, Marina Cobal, P. Yeh, G. Bellettini, G. Martignon, V. V. Glagolev, Hiroto Kambara, Kenneth Bloom, L. Rosenson, L. E. Kirsch, A. Byon-Wagner, Tetsuo Arisawa, N. Eddy, R. J. Hollebeek, J. I. Lamoureux, R. Vidal, H. Niu, Sally Seidel, Umesh Joshi, J. Cooper, R. D. Kennedy, N. Bruner, S. H. Kim, J. Siegrist, P. F. Shepard, S. H. Oh, D. Costanzo, W. Riegler, R. Madrak, C. Nelson, Th. Müller, S. R. Amendolia, K. Sliwa, S. Klimenko, R. Cropp, Itsuo Nakano, F. Spinella, M. Gold, J. R. Bensinger, L. Groer, N. Lai, Kazuhiko Hara, R. Demina, Alan Garfinkel, P. McIntyre, E. Kovacs, T. Ohmoto, M. L. Chu, Mosè Mariotti, R. L. Wagner, Fedor Prokoshin, K. Goulianos, Yasuo Fukui, W. K. Sakumoto, T. Okusawa, S. Geer, P. de Barbaro, P. Mazzanti, C. Grosso-Pilcher, J. Done, J. Huston, R. Culbertson, N. B. Wallace, A. Bodek, J. Iwai, C. Yosef, R. S. Guo, P. F. Derwent, M. Lancaster, Robert M Harris, Joe Kroll, R. K. Plunkett, K. S. McFarland, S. Tether, Andrea Castro, D. Khazins, K. Karr, K. Tollefson, A. Scribano, M. J. Wang, T. Miao, D. Dagenhart, Xin Wu, J. Tseng, M. Binkley, M. G. Albrow, N. S. Lockyer, J. Boudreau, Roberto Rossin, S. Gadomski, C. Miao, David Saltzberg, S. Vejcik, T. Takano, M. Shimojima, J. W. Chapman, Luca Stanco, C. Haber, and S. Cihangir
Subjects: Physics, Quark, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, Lambda, 01 natural sciences, Bottom quark, Silicon vertex detector, Baryon, Crystallography, Fragmentation (mass spectrometry), 0103 physical sciences, Atomic physics, 010306 general physics
Abstract: We have studied the production of B hadrons in 1.8-TeV pp(bar sign) collisions. We present measurements of the fragmentation fractions, f{sub u} , f{sub d} , f{sub s} , and f{sub baryon} , of produced b quarks that yield B{sup +} , B{sup 0} , B{sup 0}{sub s} , and {lambda}{sup 0}{sub b} hadrons. Reconstruction of five electron-charm final states yields f{sub s}/( f{sub u}+f{sub d})=0.213{+-}0.068 and f{sub baryon}/( f{sub u}+f{sub d})=0.118{+-}0.042 , assuming f{sub u}=f{sub d} . If all B hadrons produced in pp(bar sign) collisions cascade to one of these four hadrons, we determine f{sub u}=f{sub d}=0.375{+-}0.023 , f{sub s}=0.160{+-}0.044 , and f{sub baryon}=0.090{+-}0.029 . If we do not assume f{sub u}=f{sub d} , we find f{sub d}/f{sub u}=0.84{+-}0.16 . (c) 2000 The American Physical Society.
Published: 2000

42. Search for Color Singlet Technicolor Particles inpp¯Collisions at√s=1.8TeV

Author: M. Gold, G. Velev, A. Barbaro-Galtieri, H. Sato, S. Vejcik, T. Takano, D. Vucinic, F. Semeria, T. Kuwabara, T. A. Keaffaber, E. Kovacs, T. Ohmoto, Stephan Lammel, K. Kurino, S. Bailey, S. E. Kuhlmann, P. Nicolaidi, Luca Stanco, F. Strumia, I. Fiori, A. W. Scott, B. Flaugher, D. Partos, Michael Schmitt, J. Incandela, A. G. Clark, Andrea Sansoni, J. Conway, S. Donati, G. Pope, P. Gatti, James Proudfoot, J. D. Lewis, S. Bertolucci, W. Ashmanskas, J. P. Berge, Louis Lyons, C. R. Hall, L. Christofek, C. Haber, R. L. Wagner, T. Suzuki, A. Pompos, Maxwell Chertok, T. Ohsugi, J. Guimaraes da Costa, M. Kirk, K. Kondo, Mark Kruse, P. Koehn, F. Ptohos, W. J. Robertson, Luca Scodellaro, K. L. Byrum, Stefano Belforte, Paul Tipton, J. Yoh, T. Watanabe, P. Giromini, A. Munar, Peter McIntyre, Andrew Beretvas, J. Wyss, G. Chiarelli, M. J. Shochet, G. Piacentino, W. Bokhari, E. Cocca, Kostantinos Kordas, B. Bevensee, Anna Zanetti, Henrik Jeldtoft Jensen, G. Pauletta, M. Campbell, H. Kasha, P. Murat, D. Waters, P. Giannetti, T. Kikuchi, R. E. Hughes, Chunhui Chen, R. Handler, K. Goulianos, Petar Maksimovic, S. Dell'Agnello, S. Worm, D. Amidei, C. I. Ciobanu, L. Ristori, A. T. Goshaw, B. Hinrichsen, M. M. Deninno, S. Miscetti, Marjorie Shapiro, P. Yeh, P. Lukens, J. Strologas, D. Winn, R. S. Guo, W. Trischuk, P. F. Derwent, Lawrence Nodulman, A. J. Slaughter, V. Papadimitriou, I. Yu, E. Buckley-Geer, J. Steele, Nicola Bacchetta, B. S. Blusk, Riccardo Paoletti, P. de Barbaro, G. Bauer, A. D. Hardman, F. D. Snider, J. Cranshaw, A. Scribano, P. K. Teng, F. Bedeschi, Matthew Jones, S. Cihangir, Manfred Paulini, H. Nakada, Marina Cobal, C. Green, Andrey Korytov, W. Carithers, S. Murgia, P. Sinervo, W. Erdmann, V. Glagolev, T. Nakaya, A. Connolly, H. Akimoto, M. Tecchio, S. Wolbers, A. Heiss, K. Ragan, F. DeJongh, T. Asakawa, W-M. Yao, E. Meschi, M. Lancaster, D. W. Gerdes, James D. Olsen, Y. Iwata, G. Bellettini, G. Martignon, Christoph Paus, J. Carlson, J. Berryhill, Yongsun Kim, S. R. Hahn, G. Signorelli, S. C. van den Brink, J. Spalding, Daniela Bortoletto, Jay Dittmann, B. A. Barnett, S. Tkaczyk, David Stuart, D. Cauz, M. P. Schmidt, Giorgio Apollinari, G. Punzi, L. Santi, Sally Seidel, M. Cordelli, G. Busetto, Brian L Winer, Teruki Kamon, R. G. Feild, Masaaki Tanaka, W. C. Wester, L. Malferrari, E. Engels, C. Pagliarone, A. Rakitine, Ciro Bigongiari, M. Musy, Craig Blocker, Michele Gallinaro, D. Dagenhart, S. Galeotti, M. Mangano, L. Pescara, Jane Nachtman, Tong Gao, G. P. Yeh, Kaori Maeshima, H. Grassmann, J. Antos, M. Barone, M. Binkley, M. Kelly, P. Azzi-Bacchetta, S. P. Pappas, J. Tseng, J. Wolinski, J. B. Liu, R. Oishi, H. H. Williams, A. Nomerotski, M. G. Albrow, Tony Liss, J. Budagov, P. Wilson, Konstanty Sumorok, J. Boudreau, Teresa Rodrigo, W. Riegler, G. Introzzi, A. Stefanini, A. Robinson, M. Menguzzato, Kevin Einsweiler, A. M. Walsh, T. J. Phillips, Y. Morita, Gino Bolla, A. Korn, S. Errede, R. Cropp, P. Amaral, Robert M Harris, J. G. Loken, Avraham Yagil, M. W. Bailey, Y. Bonushkin, David Saltzberg, M. Atac, E. McKigney, S. Segler, S. Zucchelli, A. Semenov, K. Takikawa, R. E. Blair, F. Rimondi, F. Palmonari, C. Ferretti, G. Chlachidze, F. Spinella, A. Caner, R. Thurman-Keup, D. Lucchesi, D. Reher, I. Chirikov-Zorin, R. K. Plunkett, F. Azfar, Cyp Ngan, Andrea Castro, Maria Spiropulu, D. Khazins, S. Nahn, Matthew Herndon, Leonard Spiegel, Y. Seiya, M. Popovic, K. Karr, E. Moore, S. Rolli, A. Gordon, Barry Blumenfeld, L. Demortier, A. M. Lee, W. Hao, Frank Chlebana, A. Brandl, A. Akopian, John Huth, J. W. Chapman, S. Wolinski, Maurice Garcia-Sciveres, A. Reichold, T. Yoshida, M. Guenther, M. Shimojima, S. Lami, T. Shah, K. Anikeev, Y. Kato, D. Neuberger, G. Guillian, K. T. Pitts, Catherine Newman-Holmes, T. Speer, J. F. de Troconiz, Hiroshi Ikeda, R. C. Webb, Hajin Kim, M. Mishina, Y. Gotra, Fumihiko Ukegawa, N. Moggi, Jacobo Konigsberg, A. B. Wicklund, M. T. Cheng, A. Solodsky, E. E. Schmidt, K. D. Hoffman, H. Toyoda, T. Handa, Q. Fan, A. Tollestrup, T. Devlin, H. Wenzel, M. Incagli, G. Latino, D. Theriot, Aw Chan, Duncan Carlsmith, P. Sphicas, Virgil E Barnes, T. Kaneko, P. S. Chang, A. Menzione, A. J. Martin, L. Pondrom, E. Wicklund, J. E. Elias, R. Takashima, J. Lys, R. Roser, Jay Hauser, J.I. Friedman, C. H. Wang, M. Lindgren, T. L. Watts, H. Minato, B. Tannenbaum, Beom Jun Kim, Thomas LeCompte, Kenichi Hatakeyama, J. N. Bellinger, M. Franklin, Daniel P Cronin-Hennessy, R. Kephart, L. Holloway, Umesh Joshi, J. C. Freeman, Frank Hartmann, J. Cooper, I. Vologouev, J. Patrick, Alan Sill, J. S. Miller, Kevin Burkett, S. H. Kim, Jochen Jens Heinrich, A. Köngeter, J. Valls, D. Wolinski, K. Kelley, S. Leone, D. Costanzo, Th. Müller, S. R. Amendolia, H. S. Budd, C. Smith, Shin-Shan Yu, C. Holck, K. Sliwa, S. Klimenko, E. James, A. Ribon, R. J. Miller, R. Vidal, A. Mukherjee, D. Errede, M. Dell'Orso, H. Niu, N. Bruner, M. J. Wang, T. Miao, Pierre Savard, C. Bromberg, Xin Wu, P. F. Shepard, S. H. Oh, Andrea Bocci, R. Culbertson, N. B. Wallace, N. S. Lockyer, P. N. Singh, Tommaso Dorigo, Wendy Taylor, J. A.J. Matthews, Roberto Rossin, Roger Moore, R. Vilar, F. Zetti, A. Bodek, Christina Mesropian, J. Iwai, L. Rosenson, Joe Kroll, C. Yosef, Alessandro Cerri, T. Shibayama, M. Loreti, Itsuo Nakano, K. S. McFarland, S. Tether, James Bensinger, N. Lai, K. Terashi, Kazuhiko Hara, Nicola Turini, A. T. Laasanen, K. Tollefson, L. Groer, Alan Garfinkel, Fedor Prokoshin, L. E. Kirsch, Yasuo Fukui, T. Okusawa, P. Mazzanti, J. Done, J. Huston, Hiroto Kambara, R. Madrak, C. Nelson, Kenneth Bloom, M. L. Chu, Mosè Mariotti, Douglas Benjamin, W. K. Sakumoto, S. Geer, R. Demina, A. Byon-Wagner, Tetsuo Arisawa, N. Eddy, R. J. Hollebeek, C. Grosso-Pilcher, J. I. Lamoureux, R. D. Kennedy, J. Siegrist, J. Wahl, Yanwen Liu, Minu Kim, Joel Goldstein, Y. C. Chen, S. Lusin, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, E. Hafen, P. Schlabach, J. Cassada, G. W. Foster, and T. Affolder
Subjects: Physics, Particle physics, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, Technicolor, State (functional analysis), Nuclear physics, High Energy Physics::Experiment, Production (computer science), Fermilab, Singlet state, Collider Detector at Fermilab, Lepton
Abstract: We search for color singlet technirho and technipion production in $p\overline{p}$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\phantom{\rule{0ex}{0ex}}\mathrm{TeV}$ recorded with the Collider Detector at Fermilab. These exotic technimesons are present in a model of walking technicolor. The signatures studied are lepton plus two jets plus ${E}_{T}$ and multijet final states. No excess of events is seen in either final state. We set an upper limit on the technirho production cross section and exclude a region in the technipion mass versus technirho mass plane.
Published: 2000

43. Transverse Momentum and Total Cross Section ofe+e−Pairs in the Z-Boson Region frompp¯Collisions ats=1.8TeV

Author: Gino Bolla, C. H. Wang, J. Carlson, M. Lindgren, B. Tannenbaum, A. G. Clark, T. Affolder, Thomas LeCompte, S. C. van den Brink, M. Mangano, A. Semenov, L. Holloway, A. Barbaro-Galtieri, C. R. Hall, Mark Kruse, D. Knoblauch, Paul Tipton, D. Vucinic, F. Semeria, Frank Chlebana, A. M. Walsh, C. I. Ciobanu, T. A. Keaffaber, A. Akopian, J. Patrick, B. Bevensee, Joe Kroll, M. L. Chu, Y. Seiya, K. Kurino, I. Fiori, Mosè Mariotti, J. Steele, A. W. Scott, I.E. Chirikov-Zorin, W. Carithers, S. Murgia, F. Ptohos, P. Sphicas, G. Velev, D. Partos, Andrey Korytov, Maurice Garcia-Sciveres, Virgil E Barnes, Avraham Yagil, S. Worm, D. Amidei, T. L. Watts, S. Gadomski, C. Miao, W. J. Robertson, E. McKigney, James Proudfoot, D. Dagenhart, V. Glagolev, A. T. Goshaw, R. Oishi, Leonard Spiegel, H. Sato, J. Wyss, N. Moggi, T. Yoshida, T. Watanabe, K. S. McFarland, A. J. Martin, M. Gold, J. Tseng, K. Kondo, A. Munar, G. Pauletta, M. Guenther, P. S. Chang, S. Tether, I. Yu, J. Berryhill, T. Ohsugi, G. Chiarelli, M. M. Deninno, L. Pondrom, E. Wicklund, A. Menzione, Stefano Belforte, J. Boudreau, B. A. Barnett, K. Tollefson, W. Bokhari, R. Kephart, Jacobo Konigsberg, M. W. Bailey, S. Errede, Giorgio Apollinari, J. E. Elias, Henrik Jeldtoft Jensen, Teruki Kamon, S. Truitt, M. J. Shochet, Craig Blocker, T. Kuwabara, M. Campbell, Y. Bonushkin, Frank Hartmann, S. Segler, Alan Sill, P. Giannetti, L. Ristori, J. Strologas, Kaori Maeshima, David Saltzberg, M. Shimojima, M. T. Cheng, R. Handler, M. Tecchio, J. Valls, W. Trischuk, R. K. Plunkett, Tong Gao, C. Smith, Maria Spiropulu, S. Vejcik, T. Takano, W. Erdmann, Matthew Jones, P. Wilson, James D. Olsen, D. Wolinski, Maxwell Chertok, K. Kelley, S. Leone, Nicola Bacchetta, S. Dell'Agnello, J. D. Lewis, C. Holck, W. K. Sakumoto, M. Menguzzato, E. Kovacs, T. Ohmoto, S. Bertolucci, Robert M Harris, J. Lys, T. Kaneko, J. Spalding, H. S. Budd, A. Solodsky, S. Tkaczyk, David Stuart, S. Geer, F. Bedeschi, P. K. Teng, M. Kirk, Masaaki Tanaka, R. G. Feild, C. Green, Joel Goldstein, P. Koehn, F. DeJongh, R. Roser, J. P. Berge, S. Rolli, E. James, R. J. Miller, W. C. Wester, A. Mukherjee, Marjorie Shapiro, Kostantinos Kordas, G. P. Yeh, Jay Dittmann, W-M. Yao, L. Christofek, S. E. Kuhlmann, P. Nicolaidi, A. J. Slaughter, Andrea Castro, J.I. Friedman, C. Grosso-Pilcher, Tony Liss, D. Khazins, D. Cauz, E. Buckley-Geer, Riccardo Paoletti, F. Strumia, R. E. Hughes, Chunhui Chen, Petar Maksimovic, Y. Iwata, G. Signorelli, G. Chlachidze, Y. C. Chen, Daniela Bortoletto, E. Meschi, T. Suzuki, R. Culbertson, N. B. Wallace, Andrea Sansoni, Andrea Bocci, Luca Stanco, Tommaso Dorigo, K. Karr, P. Sinervo, S. Donati, D. Winn, P. Gatti, W. Ashmanskas, Michele Gallinaro, A. Pompos, Teresa Rodrigo, M. P. Schmidt, R. Vilar, T. Nakaya, J. Yoh, H. Akimoto, R. L. Wagner, A. Perazzo, J. Guimaraes da Costa, S. Lami, T. Shah, M. Cordelli, G. Busetto, Brian L Winer, A. Robinson, S. R. Hahn, T. J. Phillips, R. G. Wagner, K. Goulianos, S. Lusin, F. Zetti, C. Haber, A. Bodek, Y. Morita, J. Iwai, Andrew Beretvas, S. P. Pappas, Beom Jun Kim, M. J. Wang, T. Miao, P. Azzi-Bacchetta, F. Happacher, P. T. Chang, A. Scribano, J. Antos, C. Bromberg, K. Takikawa, F. Palmonari, L. Malferrari, C. Yosef, Alessandro Cerri, D. Errede, S. Bailey, R. Thurman-Keup, Cyp Ngan, Konstanty Sumorok, Kenichi Hatakeyama, J. B. Liu, Dario Bisello, A. Bhatti, James Bensinger, Xin Wu, B. Flaugher, S. Nahn, E. Hafen, M. Franklin, N. Lai, Kazuhiko Hara, Y. Kato, D. Neuberger, G. Guillian, N. S. Lockyer, Michael Schmitt, J. Incandela, E. Moore, P. Amaral, Roberto Rossin, K. T. Pitts, Catherine Newman-Holmes, P. de Barbaro, Fedor Prokoshin, Yasuo Fukui, J. Conway, A. Gordon, T. Okusawa, R. S. Guo, P. F. Derwent, T. Speer, P. Mazzanti, S. Zucchelli, M. Binkley, G. Pope, M. Lancaster, R. E. Blair, F. Rimondi, M. G. Albrow, J. Done, J. Huston, J. C. Freeman, I. Vologouev, J. F. de Troconiz, Umesh Joshi, J. Cooper, K. Ragan, S. H. Kim, Hiroshi Ikeda, R. C. Webb, D. Costanzo, Th. Müller, S. R. Amendolia, K. Sliwa, S. Klimenko, A. Connolly, Sally Seidel, T. Asakawa, J. Wahl, A. Köngeter, G. Punzi, E. Engels, Ciro Bigongiari, M. Musy, Yanwen Liu, M. Barone, M. Kelly, Stephan Lammel, C. Pagliarone, S. Galeotti, T. Kikuchi, R. Cropp, P. Yeh, Lawrence Nodulman, H. Grassmann, J. Wolinski, F. Spinella, A. Nomerotski, P. Schlabach, J. Cassada, Jay Hauser, G. W. Foster, H. Minato, C. Ferretti, D. Lucchesi, J. N. Bellinger, G. Piacentino, E. Cocca, Daniel P Cronin-Hennessy, S. Miscetti, Marina Cobal, J. S. Miller, Kevin Burkett, G. Bellettini, G. Martignon, S. Blusk, Jochen Jens Heinrich, Shin-Shan Yu, A. Ribon, Pierre Savard, Q. Fan, Wendy Taylor, A. Tollestrup, J. A.J. Matthews, Roger Moore, Christina Mesropian, T. Shibayama, M. Loreti, T. Devlin, K. Terashi, Nicola Turini, A. T. Laasanen, H. Wenzel, M. Incagli, G. Latino, D. Theriot, Duncan Carlsmith, M. Mishina, A. Byon-Wagner, Tetsuo Arisawa, Y. Gotra, N. Eddy, Fumihiko Ukegawa, R. J. Hollebeek, J. I. Lamoureux, R. D. Kennedy, A. B. Wicklund, J. Siegrist, E. E. Schmidt, A. Parri, M. Dell'Orso, K. D. Hoffman, H. Toyoda, T. Handa, P. N. Singh, L. Rosenson, L. E. Kirsch, R. Madrak, C. Nelson, Jane Nachtman, Hyun-Chul Kim, A. Caner, S. Cihangir, Douglas Benjamin, Manfred Paulini, H. Nakada, R. Demina, Yongsun Kim, L. Santi, Luca Scodellaro, K. L. Byrum, P. Giromini, Anna Zanetti, H. Kasha, B. Hinrichsen, P. Lukens, V. Papadimitriou, A. Heiss, L. Pescara, R. Vidal, H. Niu, H. H. Williams, N. Bruner, P. F. Shepard, S. H. Oh, G. Introzzi, A. Stefanini, M. Atac, D. Reher, Itsuo Nakano, L. Groer, Alan Garfinkel, J. Budagov, P. McIntyre, Hiroto Kambara, Kenneth Bloom, L. Demortier, A. M. Lee, W. Hao, A. Brandl, John Huth, J. W. Chapman, Kevin Einsweiler, P. Murat, G. Bauer, A. D. Hardman, F. D. Snider, S. Wolbers, D. W. Gerdes, and R. Takashima
Subjects: Quantum chromodynamics, Nuclear physics, Physics, Pair production, General Physics and Astronomy, Drell–Yan process, High Energy Physics::Experiment, Electron, Resummation, Nuclear Experiment, Collider Detector at Fermilab, Boson, Gluon
Abstract: The transverse momentum and total cross section of e{sup +}e{sup -} pairs in the Z -boson region of 66
Published: 2000

44. Search for a Fourth-Generation Quark More Massive than theZ0Boson inpp¯Collisions at√s=1.8TeV

Author: J. A.J. Matthews, Roger Moore, S. Bertolucci, G. Velev, C. Smith, J. P. Berge, H. Sato, C. Holck, P. Schlabach, M. Gold, T. L. Watts, E. James, H. Wenzel, M. Incagli, G. Latino, D. Theriot, Duncan Carlsmith, T. Shibayama, M. Loreti, L. Christofek, T. Suzuki, S. Tkaczyk, David Stuart, A. Byon-Wagner, Tetsuo Arisawa, N. Eddy, R. J. Hollebeek, J. I. Lamoureux, T. Kuwabara, Q. Fan, A. Tollestrup, T. Devlin, S. Gadomski, C. Miao, A. Pompos, Luca Scodellaro, K. L. Byrum, R. G. Feild, R. D. Kennedy, R. Kephart, Frank Hartmann, W. Carithers, S. Murgia, P. Giromini, J. Cassada, A. Cerri, K. Terashi, Nicola Turini, A. T. Laasanen, E. Kovacs, T. Ohmoto, Anna Zanetti, H. Kasha, B. Hinrichsen, P. Murat, J. F. de Troconiz, M. Mishina, Y. Gotra, Fumihiko Ukegawa, Alan Sill, Avraham Yagil, E. McKigney, F. Ptohos, W. J. Robertson, M. L. Chu, M. Cordelli, G. Busetto, Brian L Winer, A. B. Wicklund, E. E. Schmidt, K. D. Hoffman, H. Toyoda, J. Siegrist, T. Handa, G. Piacentino, E. Cocca, A. Parri, S. Cihangir, L. Nodulman, P. Sphicas, G. P. Yeh, Jay Hauser, R. S. Guo, M. P. Schmidt, M. Shimojima, M. Dell'Orso, Manfred Paulini, Virgil E Barnes, J. Valls, I.E. Chirikov-Zorin, J. Berryhill, Hiroshi Ikeda, D. Wolinski, T. Watanabe, Mosè Mariotti, P. F. Derwent, K. Kelley, S. Leone, R. G. Wagner, Maxwell Chertok, N. Lai, Leonard Spiegel, Tony Liss, H. Nakada, Kazuhiko Hara, R. L. Wagner, H. H. Williams, S. Miscetti, R. C. Webb, A. J. Martin, W. Bokhari, H. S. Budd, M. Lancaster, L. Pondrom, E. Wicklund, Robert M Harris, H. Minato, G. Bauer, A. D. Hardman, F. D. Snider, K. Goulianos, T. Kaneko, Teresa Rodrigo, D. Amidei, P. S. Chang, Tomoko Yoshida, G. Introzzi, A. Stefanini, M. Atac, Marina Cobal, N. Moggi, M. Garcia-Sciveres, R. J. Miller, G. W. Foster, A. Mukherjee, J. E. Elias, B. J. Kim, S. P. Pappas, P. Azzi-Bacchetta, M. J. Wang, T. Miao, Yongsun Kim, Y. C. Chen, J. Cranshaw, S. Wolbers, D. W. Gerdes, Andrea Castro, Fedor Prokoshin, Yasuo Fukui, M. Campbell, D. Waters, P. Giannetti, R. Handler, D. Reher, K. Kondo, A. Munar, J. Budagov, T. Okusawa, P. Mazzanti, Andrea Bocci, Kenichi Hatakeyama, J. B. Liu, L. Santi, J. N. Bellinger, D. Khazins, P. N. Singh, L. Rosenson, S. Dell'Agnello, Marjorie Shapiro, A. J. Slaughter, G. Pauletta, K. Karr, Tong Gao, G. Bellettini, G. Martignon, J. D. Lewis, Tommaso Dorigo, V. V. Glagolev, W. K. Sakumoto, M. Franklin, Xin Wu, A. Connolly, T. Asakawa, A. Menzione, S. Bailey, T. J. Phillips, Jacobo Konigsberg, I. Yu, Daniel P Cronin-Hennessy, Jane Nachtman, S. Geer, J. Done, J. Huston, D. Dagenhart, M. T. Cheng, M. Kirk, C. Pagliarone, S. Galeotti, N. S. Lockyer, P. de Barbaro, L. E. Kirsch, C. Bromberg, Y. Morita, E. Buckley-Geer, Riccardo Paoletti, R. Vilar, P. Koehn, J. Tseng, H. Grassmann, J. Wolinski, P. Amaral, J. C. Freeman, I. Vologouev, Matthew Jones, C. Grosso-Pilcher, Roberto Rossin, Stefano Belforte, B. Flaugher, E. S. Hafen, Michael Schmitt, J. Incandela, J. S. Miller, Hyun-Chul Kim, Kevin Burkett, A. Scribano, A. Solodsky, P. Lukens, Kostantinos Kordas, F. Zetti, R. E. Hughes, Joe Kroll, Joel Goldstein, Sally Seidel, J. Conway, Y. Bonushkin, Jochen Jens Heinrich, R. Takashima, M. Mangano, V. Papadimitriou, A. Nomerotski, Hiroto Kambara, Chunhui Chen, Petar Maksimovic, S. Zucchelli, R. E. Blair, R. Madrak, P. Sinervo, R. K. Plunkett, Henrik Jeldtoft Jensen, C. Nelson, Kevin Einsweiler, G. Pope, Kenneth Bloom, R. Culbertson, J. G. Loken, F. Rimondi, N. B. Wallace, M. Binkley, A. Heiss, D. Winn, James D. Olsen, J. Spalding, A. Köngeter, K. S. McFarland, S. Tether, S. Lusin, Gino Bolla, A. M. Walsh, C. H. Wang, M. G. Albrow, F. DeJongh, C. Ferretti, J. Boudreau, J. Carlson, J. Strologas, F. Happacher, P. T. Chang, Shin-Shan Yu, L. Ristori, Dario Bisello, A. Bhatti, C. Mesropian, M. Lindgren, K. Tollefson, G. Punzi, E. Engels, Ciro Bigongiari, A. Caner, B. Tannenbaum, F. Azfar, M. Musy, L. Pescara, J. Proudfoot, D. Lucchesi, R. Vidal, J. Lys, L. Malferrari, A. Ribon, R. Roser, A. Semenov, J. Wyss, G. Chiarelli, S. C. van den Brink, W. Riegler, A. Bodek, Thomas LeCompte, H. Niu, J. Iwai, N. Bruner, P. F. Shepard, S. H. Oh, Masaaki Tanaka, W. C. Wester, W. Trischuk, M. M. Deninno, M. Barone, C. Yosef, J.I. Friedman, Pierre Savard, F. Strumia, M. Kelly, L. Holloway, R. Cropp, L. Demortier, Nicola Bacchetta, R. Demina, Andrea Sansoni, Itsuo Nakano, W-M. Yao, S. Donati, F. Bedeschi, J. Wahl, David Saltzberg, Yanwen Liu, Y. Seiya, J. R. Bensinger, L. Groer, Alan Garfinkel, P. Gatti, J. Patrick, F. Spinella, Stephan Lammel, E. Meschi, A. M. Lee, B. S. Blusk, Umesh Joshi, P. McIntyre, J. Cooper, T. Affolder, W. Ashmanskas, W. Hao, A. Brandl, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, Louis Lyons, J. Guimaraes da Costa, John Huth, S. Lami, T. Shah, S. H. Kim, M. Tecchio, T. A. Keaffaber, S. Vejcik, T. Kikuchi, R. Oishi, P. Yeh, Andrew Beretvas, K. Kurino, T. Takano, I. Fiori, A. W. Scott, D. Partos, D. P. Benjamin, D. Costanzo, Th. Müller, S. R. Amendolia, K. Sliwa, S. Klimenko, M. W. Bailey, D. Errede, J. W. Chapman, Luca Stanco, Y. Kato, D. Neuberger, G. Guillian, C. Haber, K. T. Pitts, Catherine Newman-Holmes, T. Speer, F. Palmonari, R. Thurman-Keup, Cyp Ngan, S. Nahn, E. Moore, A. Gordon, Y. Iwata, G. Signorelli, Daniela Bortoletto, A. Robinson, K. Takikawa, T. Ohsugi, M. J. Shochet, P. K. Teng, C. Green, Frank Chlebana, A. Akopian, A. Reichold, M. Guenther, S. Segler, Maria Spiropulu, S. Rolli, Barry Blumenfeld, K. Ragan, Jay Dittmann, D. Cauz, T. Nakaya, H. Akimoto, A. Perazzo, S. R. Hahn, J. Antos, Konstanty Sumorok, Michele Gallinaro, S. Worm, A. T. Goshaw, S. Errede, W. Erdmann, A. G. Clark, C. R. Hall, Mark Kruse, D. Knoblauch, Paul Tipton, B. Bevensee, C. I. Ciobanu, J. Steele, Andrey Korytov, S. E. Kuhlmann, P. Nicolaidi, G. Chlachidze, J. Yoh, B. A. Barnett, Giorgio Apollinari, Teruki Kamon, S. Truitt, Craig Blocker, Kaori Maeshima, P. Wilson, M. Menguzzato, and Wendy Taylor
Subjects: Physics, Quark, Top quark, Particle physics, Neutral current, High Energy Physics::Phenomenology, General Physics and Astronomy, Bottom quark, Standard Model, Nuclear physics, Pair production, High Energy Physics::Experiment, Collider Detector at Fermilab, Lepton
Abstract: We present the results of a search for pair production of a fourth-generation charge -1 / 3 quark (b(')) in sqrt[s] = 1.8 TeV pp collisions using 88 pb(-1) of data obtained with the Collider Detector at Fermilab. We assume that both quarks decay via the flavor-changing neutral current process b(')-->bZ(0) and that the b(') mass is greater than m(Z)+m(b). We studied the decay mode b(')b(');-->Z(0)Z(0)bb where one Z0 decays into e(+)e(-) or m(+)m(-) and the other decays hadronically, giving a signature of two leptons plus jets. An upper limit on the sigma(pp-->b(')b(');)x[B(b(')-->bZ(0))](2) is established as a function of the b(') mass. We exclude at 95% confidence level a b(') quark with mass between 100 and 199 GeV/c(2) for B(b(')-->bZ(0)) = 100%.
Published: 2000

45. Observation of Diffractiveb-Quark Production at the Fermilab Tevatron

Author: A. Connolly, T. Asakawa, P. Sphicas, G. Velev, A. G. Clark, H. Sato, G. Punzi, E. Engels, Ciro Bigongiari, M. Musy, T. L. Watts, Virgil E Barnes, K. Borras, C. R. Hall, S. Bertolucci, T. Kuwabara, J. P. Berge, M. Barone, M. Kelly, Mark Kruse, D. Knoblauch, S. Gadomski, T. Kaneko, P. S. Chang, Paul Tipton, C. Miao, B. Bevensee, L. Christofek, T. Suzuki, R. Kephart, A. Menzione, Gino Bolla, C. Pagliarone, S. Galeotti, A. Pompos, Frank Hartmann, P. Mc Intyre, Hiroto Kambara, J. D. Lewis, M. Kirk, A. Semenov, M. Mangano, Maxwell Chertok, R. S. Guo, P. F. Derwent, M. Lancaster, P. Lukens, M. Shimojima, Alan Sill, Kenneth Bloom, H. Grassmann, J. Wolinski, Stephan Lammel, T. Le Compte, F. Ptohos, W. J. Robertson, F. Palmonari, K. S. Mc Farland, V. Papadimitriou, S. Tkaczyk, S. Bailey, M. Gold, Jay Dittmann, D. Cauz, B. Flaugher, Michael Schmitt, J. Incandela, A. Nomerotski, David Stuart, J. Conway, P. Koehn, J. Strologas, G. Pope, T. Watanabe, T. Kikuchi, R. Takashima, W. Bokhari, Kostantinos Kordas, Robert M Harris, M. Campbell, R. G. Feild, P. Giannetti, Michele Gallinaro, P. Yeh, J. Valls, Jay Hauser, M. Mishina, Lawrence Nodulman, R. Handler, D. Dagenhart, L. Malferrari, G. Chlachidze, R. Thurman-Keup, Cyp Ngan, R. E. Hughes, S. Dell'Agnello, I. Chirikov-Zorin, Y. Seiya, Y. Gotra, D. Wolinski, W-M. Yao, G. P. Yeh, Chunhui Chen, Petar Maksimovic, C. H. Wang, Andrea Castro, M. Lindgren, B. Tannenbaum, J. Tseng, S. E. Kuhlmann, P. Nicolaidi, E. Meschi, C. Ferretti, D. Khazins, R. Vidal, J. Boudreau, H. Niu, Fumihiko Ukegawa, K. Kelley, S. Leone, E. Kovacs, T. Ohmoto, James Bensinger, A. Heiss, S. Worm, D. Amidei, A. T. Goshaw, K. Karr, S. Nahn, S. Errede, H. Minato, M. Cordelli, G. Busetto, Brian L Winer, Y. Bonushkin, A. Parri, R. G. Wagner, David Saltzberg, F. de Jongh, D. Lucchesi, N. Bruner, P. F. Shepard, S. H. Oh, H. S. Budd, Marjorie Shapiro, S. P. Pappas, J. B. Liu, D. Winn, Teresa Rodrigo, L. Holloway, N. Lai, S. Vejcik, T. Takano, Kazuhiko Hara, P. Amaral, T. J. Phillips, A. M. Walsh, E. Moore, Y. Morita, A. B. Wicklund, S.G. Klimenko, S. Zucchelli, R. E. Blair, Luca Stanco, G. Piacentino, E. Cocca, A. J. Slaughter, F. Rimondi, Sally Seidel, A. Scribano, J. N. Bellinger, J. Patrick, M. Dell'Orso, Itsuo Nakano, L. Groer, Alan Garfinkel, C. Haber, Fedor Prokoshin, Daniel P Cronin-Hennessy, R. J. Miller, L. Pescara, Kevin Einsweiler, A. Gordon, S. Miscetti, W. Erdmann, Yasuo Fukui, E. Buckley-Geer, Riccardo Paoletti, T. Okusawa, P. Mazzanti, J. S. Miller, Kevin Burkett, A. Mukherjee, T. Nakaya, Marina Cobal, J. Wyss, G. Chiarelli, M. Binkley, Avraham Yagil, M. G. Albrow, P. Murat, R. Cropp, G. Bellettini, Y. Iwata, E. E. Schmidt, M. M. Deninno, H. Akimoto, Jochen Jens Heinrich, A. Perazzo, M. L. Chu, G. Signorelli, Daniela Bortoletto, S. R. Hahn, Mosè Mariotti, J. Done, J. Huston, F. Spinella, G. Martignon, Andrea Bocci, R. L. Wagner, J. F. de Troconiz, G. Bauer, A. D. Hardman, K. Goulianos, Tommaso Dorigo, F. D. Snider, J. Cranshaw, K. D. Hoffman, B. S. Blusk, L. Demortier, S. Wolbers, Shin-Shan Yu, M. Tecchio, W. Carithers, S. Murgia, J. Antos, A. Robinson, P. Sinervo, Konstanty Sumorok, D. Errede, P. N. Singh, R. Vilar, D. W. Gerdes, H. Toyoda, A. M. Lee, Tony Liss, W. K. Sakumoto, K. Takikawa, T. Ohsugi, A. Ribon, Frank Chlebana, C. Bromberg, F. Zetti, A. Akopian, R. Culbertson, P. de Barbaro, J. Carlson, W. Hao, N. B. Wallace, M. J. Shochet, S. Geer, C. Grosso-Pilcher, Maurice Garcia-Sciveres, K. Ragan, L. Rosenson, A. Brandl, Pierre Savard, Leonard Spiegel, J. Berryhill, T. Yoshida, S. C. van den Brink, T. Handa, J. Yoh, M. Guenther, C. I. Ciobanu, John Huth, Wendy Taylor, J. A.J. Matthews, A. Bodek, Hiroshi Ikeda, J. Iwai, J. W. Chapman, H. H. Williams, P. K. Teng, C. Green, Roger Moore, S. Segler, Tong Gao, Yc Liu, C. Yosef, Christina Mesropian, G. Introzzi, A. Stefanini, K. Kondo, Alessandro Cerri, L. E. Kirsch, R. K. Plunkett, Maria Spiropulu, T. Shibayama, M. Atac, M. Loreti, A. Munar, G. Pauletta, Umesh Joshi, J. Cooper, S. Rolli, R. C. Webb, S. H. Kim, R. Oishi, D. Reher, K. Terashi, Nicola Turini, Barry Blumenfeld, A. T. Laasanen, H. Wenzel, J. Steele, I. Yu, D. Costanzo, M. W. Bailey, Th. Müller, S. R. Amendolia, K. Sliwa, Andrey Korytov, R. Madrak, C. Nelson, Masashi Tanaka, V. Glagolev, F. Strumia, Andrea Sansoni, S. Donati, P. Gatti, N. Moggi, W. Ashmanskas, Jacobo Konigsberg, M. T. Cheng, M. Incagli, J. Guimaraes da Costa, A. Solodsky, J. Lys, R. Roser, J.I. Friedman, G. Latino, D. Theriot, Andrew Beretvas, S. Lami, T. Shah, Douglas Benjamin, Beom Jun Kim, Kenichi Hatakeyama, B. A. Barnett, Giorgio Apollinari, M. Franklin, Teruki Kamon, S. Truitt, J. C. Freeman, Craig Blocker, I. Vologouev, E. Mc Kigney, Kaori Maeshima, Duncan Carlsmith, Y. Kato, D. Neuberger, G. Guillian, R. Demina, A. Byon-Wagner, A. Köngeter, Tetsuo Arisawa, Matthew Jones, K. T. Pitts, P. Wilson, Catherine Newman-Holmes, N. Eddy, R. J. Hollebeek, James D. Olsen, J. Spalding, M. Menguzzato, J. I. Lamoureux, W. C. Wester, T. Speer, A. J. Martin, R. D. Kennedy, Q. Fan, L. Pondrom, E. Wicklund, A. Tollestrup, J. Siegrist, J. E. Elias, T. Devlin, J. Wahl, Joe Kroll, P. Schlabach, J. Cassada, G. W. Foster, Joel Goldstein, Y. C. Chen, S. Tether, S. Lusin, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, E. Hafen, K. Tollefson, C. Smith, C. Holck, E. James, M. J. Wang, T. Miao, Xin Wu, N. S. Lockyer, Roberto Rossin, T. Affolder, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, T. A. Keaffaber, K. Kurino, Jane Nachtman, I. Fiori, A. W. Scott, D. Partos, Hyun-Chul Kim, James Proudfoot, A. Caner, M. P. Schmidt, P. Azzi-Bacchetta, J. Budagov, Luca Scodellaro, Stefano Belforte, K. L. Byrum, Henrik Jeldtoft Jensen, Anna Zanetti, H. Kasha, B. Hinrichsen, L. Ristori, S. Cihangir, W. Trischuk, Nicola Bacchetta, Manfred Paulini, F. Bedeschi, H. Nakada, Yongsun Kim, L. Santi, Clark, Allan Geoffrey, Kambara, Hisanori, Speer, Thomas, Strumia Michelini, Federica, and Wu, Xin
Subjects: POMERON, Quark, Physics, SILICON VERTEX DETECTOR, COLLIDER, PHYSICS, Particle physics, Tevatron, General Physics and Astronomy, ddc:500.2, Bottom quark, Nuclear physics, Pomeron, Pseudorapidity, High Energy Physics::Experiment, Production (computer science), Fermilab, Nuclear Experiment, Bar (unit)
Abstract: We report a measurement of the fraction of b quarks produced diffractively in p(bar sign) p collisions at {radical}(s)=1.8 TeV. Diffraction is identified by the absence of particles in a forward pseudorapidity region. From events with an electron of transverse momentum 9.5
Published: 2000

46. Search for the Flavor-Changing Neutral Current DecaysB+→μ+μ−K+andB0→μ+μ−K*0

Author: Frank Chlebana, J. D. Lewis, A. Akopian, M. Kirk, P. Murat, T. Le Compte, P. Koehn, L. Nodulman, Kostantinos Kordas, M. Guenther, R. E. Hughes, J. Wyss, G. Chiarelli, G. Bauer, A. D. Hardman, F. D. Snider, Chunhui Chen, M. Mishina, S. Segler, Y. Bonushkin, Petar Maksimovic, R. Takashima, Y. Gotra, Fumihiko Ukegawa, M. M. Deninno, S. Wolbers, D. Winn, C. H. Wang, Maria Spiropulu, A. B. Wicklund, D. W. Gerdes, M. Lindgren, M. Tecchio, E. E. Schmidt, S. Rolli, B. Tannenbaum, W. Carithers, S. Murgia, J. Proudfoot, H. H. Williams, K. D. Hoffman, J. Berryhill, H. Toyoda, Tong Gao, S. Tkaczyk, David Stuart, R. G. Feild, Wendy Taylor, T. Handa, L. Holloway, G. Introzzi, A. Stefanini, M. Cordelli, G. Busetto, Brian L Winer, Sally Seidel, M. Atac, Kevin Einsweiler, J. A.J. Matthews, R. G. Wagner, S. Lami, T. Shah, A. Parri, Robert M Harris, G. P. Yeh, J. Patrick, F. de Jongh, P. Sphicas, F. Palmonari, G. Velev, Hiroto Kambara, Tony Liss, M. Dell'Orso, D. Reher, J. Budagov, Virgil E Barnes, Teresa Rodrigo, S. P. Pappas, P. Mc Intyre, Roger Moore, C. Smith, T. Kaneko, Gino Bolla, J. B. Liu, H. Wenzel, R. Thurman-Keup, R. Culbertson, Cyp Ngan, H. Sato, N. B. Wallace, T. J. Phillips, R. S. Guo, P. S. Chang, P. F. Derwent, C. Holck, Y. Morita, Andrea Castro, D. Khazins, A. Menzione, S. Worm, E. S. Hafen, C. Mesropian, P. Amaral, P. N. Singh, Kenneth Bloom, D. P. Benjamin, R. Cropp, T. Kuwabara, D. Errede, T. Nakaya, H. Akimoto, A. Semenov, M. Incagli, A. Perazzo, G. Piacentino, E. Cocca, M. Lancaster, A. T. Goshaw, E. James, P. Lukens, G. Latino, K. Karr, S. Nahn, L. Rosenson, S. R. Hahn, D. Theriot, T. Shibayama, S. Zucchelli, R. E. Blair, M. Loreti, F. Rimondi, K. S. Mc Farland, V. Papadimitriou, F. Spinella, M. Gold, S. Miscetti, J. Antos, J. Strologas, Y. Kato, D. Neuberger, G. Guillian, Y. Seiya, Duncan Carlsmith, Konstanty Sumorok, A. Heiss, A. Scribano, A. Bodek, L. E. Kirsch, S. Vejcik, J. Iwai, S. Errede, C. Yosef, K. Terashi, T. Takano, Nicola Turini, A. T. Laasanen, E. Moore, Marina Cobal, E. Kovacs, T. Ohmoto, R. Madrak, K. T. Pitts, Q. Fan, Joe Kroll, R. K. Plunkett, A. Tollestrup, Catherine Newman-Holmes, T. Speer, G. Bellettini, L. Pescara, C. Nelson, G. Martignon, S. Blusk, Jochen Jens Heinrich, Avraham Yagil, T. Devlin, W-M. Yao, V. V. Glagolev, W. Erdmann, A. Gordon, J. W. Chapman, Luca Stanco, C. Pagliarone, N. Lai, S. Galeotti, S. Bailey, M. Binkley, E. Meschi, M. G. Albrow, H. Grassmann, J. Wolinski, R. Vidal, R. L. Wagner, H. Niu, A. G. Clark, Kazuhiko Hara, N. Moggi, C. Haber, K. Goulianos, S. Tether, Shin-Shan Yu, N. Bruner, Jacobo Konigsberg, A. Ribon, A. Nomerotski, Y. Iwata, Daniela Bortoletto, L. Demortier, D. Dagenhart, C. R. Hall, R. Demina, A. Byon-Wagner, Tetsuo Arisawa, P. F. Shepard, S. H. Oh, A. Connolly, N. Eddy, R. J. Hollebeek, A. M. Lee, B. Flaugher, Mark Kruse, Michael Schmitt, D. Knoblauch, S. Gadomski, J. Incandela, C. Miao, M. T. Cheng, K. Tollefson, T. Asakawa, J. Tseng, W. Hao, Pierre Savard, Paul Tipton, J. I. Lamoureux, B. Bevensee, P. de Barbaro, Fedor Prokoshin, A. Brandl, A. Solodsky, J. Conway, R. D. Kennedy, John Huth, J. Boudreau, C. Ferretti, D. Lucchesi, G. Punzi, A. Robinson, E. Engels, Ciro Bigongiari, M. Musy, Yasuo Fukui, K. Ragan, Jay Hauser, J. Siegrist, G. Pope, M. Shimojima, David Saltzberg, Itsuo Nakano, T. Okusawa, J. R. Bensinger, L. Groer, Alan Garfinkel, K. Takikawa, T. Ohsugi, M. Barone, M. Kelly, M. J. Wang, T. Miao, Jay Dittmann, P. Mazzanti, D. Cauz, H. Minato, S. Bertolucci, M. J. Shochet, Stephan Lammel, Michele Gallinaro, M. L. Chu, J. Done, J. Huston, J. P. Berge, J. F. de Troconiz, J. N. Bellinger, T. Kikuchi, Mosè Mariotti, P. K. Teng, Daniel P Cronin-Hennessy, Xin Wu, C. Green, P. Yeh, L. Christofek, N. S. Lockyer, J. S. Miller, Kevin Burkett, Hiroshi Ikeda, Roberto Rossin, T. Suzuki, A. Pompos, R. C. Webb, F. Ptohos, Umesh Joshi, D. Amidei, W. K. Sakumoto, J. Cooper, S. H. Kim, S. Geer, W. J. Robertson, T. Watanabe, C. Grosso-Pilcher, W. Bokhari, M. Campbell, P. Giannetti, R. Handler, D. Costanzo, Th. Müller, S. R. Amendolia, S. Dell'Agnello, Leonard Spiegel, K. Sliwa, S. Klimenko, Tomoko Yoshida, M. Mangano, A. M. Walsh, Stefano Belforte, Henrik Jeldtoft Jensen, L. Ristori, L. Malferrari, W. Trischuk, Nicola Bacchetta, F. Bedeschi, K. Kondo, Luca Scodellaro, K. L. Byrum, P. Giromini, Anna Zanetti, H. Kasha, B. Hinrichsen, A. Munar, Jane Nachtman, M. P. Schmidt, G. Pauletta, Hyun-Chul Kim, Joel Goldstein, I. Yu, P. Azzi-Bacchetta, C. Bromberg, A. Caner, T. Affolder, S. Lusin, S. Cihangir, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, A. Barbaro-Galtieri, Manfred Paulini, D. Vucinic, F. Semeria, H. Nakada, T. A. Keaffaber, P. Schlabach, Yongsun Kim, J. Cassada, Y. C. Chen, K. Kurino, L. Santi, A. Cerri, I. Fiori, A. W. Scott, D. Partos, G. W. Foster, E. Mc Kigney, J. Wahl, Matthew Jones, Yanwen Liu, James D. Olsen, J. Spalding, Masaaki Tanaka, W. C. Wester, F. Strumia, Andrea Sansoni, S. Donati, T. L. Watts, P. Gatti, W. Ashmanskas, J. Guimaraes da Costa, Andrew Beretvas, R. Kephart, Frank Hartmann, Alan Sill, J. Valls, D. Wolinski, K. Kelley, S. Leone, H. S. Budd, M. Garcia-Sciveres, R. J. Miller, A. Mukherjee, Andrea Bocci, Tommaso Dorigo, R. Vilar, F. Zetti, B. A. Barnett, Giorgio Apollinari, Teruki Kamon, S. Truitt, Craig Blocker, Kaori Maeshima, P. Wilson, M. Menguzzato, C. I. Ciobanu, J. Lys, J. Steele, R. Roser, Andrey Korytov, J.I. Friedman, Kenichi Hatakeyama, M. Franklin, J. C. Freeman, I. Vologouev, A. Köngeter, S. E. Kuhlmann, P. Nicolaidi, I.E. Chirikov-Zorin, G. Chlachidze, A. J. Martin, L. Pondrom, E. Wicklund, J. Yoh, J. E. Elias, B. J. Kim, Maxwell Chertok, Marjorie Shapiro, A. J. Slaughter, E. Buckley-Geer, Riccardo Paoletti, P. Sinervo, J. Carlson, S. C. van den Brink, Henry J. Frisch, R. Oishi, and M. W. Bailey
Subjects: Physics, Crystallography, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Flavor-changing neutral current, General Physics and Astronomy, Collider Detector at Fermilab
Abstract: We report on a search for the flavor-changing neutral current decays B{sup +} {yields} {mu}{sup +}{mu}{sup -}K{sup +} and B{sup 0} {yields} {mu}{sup +}{mu}{sup -}K{sup *0} using 88 pb{sup -1} of data from p{ovr p} collisions at sqrt[s] = 1.8 TeV, collected with the Collider Detector at Fermilab. Finding no evidence for these decays, we set upper limits on the branching fractions B(B{sup +} {yields} {mu}{sup +}{mu}{sup -}K{sup +})
Published: 1999

47. Search for a TechnicolorωTParticle in Events with a Photon and ab-Quark Jet at Fermilab

Author: M. Franklin, M. Reischl, J. C. Freeman, A. Köngeter, J. Lys, R. Roser, J.I. Friedman, C. H. Wang, Stephan Lammel, P. Sphicas, A. J. Martin, L. Pondrom, E. Wicklund, J. E. Elias, Jay Hauser, G. Velev, F. Tartarelli, Virgil E Barnes, H. Sato, S. Bertolucci, F. Strumia, J. P. Berge, A. Scribano, A. Barbaro-Galtieri, T. Kuwabara, M. Mishina, Umesh Joshi, J. Cooper, S. H. Kim, Y. Gotra, Sally Seidel, W. Carithers, S. Murgia, T. Kikuchi, C. Pagliarone, S. Galeotti, Gino Bolla, S. C. van den Brink, J. Wyss, A. Byon-Wagner, Tetsuo Arisawa, P. S. Chang, D. Lucchesi, H. Grassmann, T. L. Watts, Andrea Sansoni, S. Donati, L. Christofek, G. Chiarelli, S. Behrends, K. Yasuoka, W. Ashmanskas, D. Dagenhart, M. J. Wang, T. Miao, J. Wolinski, A. B. Wicklund, A. Menzione, N. Eddy, O. Ganel, A. G. Clark, M. Mangano, D. Vucinic, F. Semeria, T. A. Keaffaber, H. Minato, P. Yeh, R. J. Hollebeek, Hiroto Kambara, Henry J. Frisch, Lawrence Nodulman, A. Nomerotski, R. Ely, Rossella Brunetti, L. Breccia, M. Binkley, T. Suzuki, M. M. Deninno, O. Long, Xin Wu, J. I. Lamoureux, Kenneth Bloom, E. E. Schmidt, R. Kephart, R. Oishi, J. Tseng, Andrew Beretvas, S. Cihangir, D. Costanzo, Th. Müller, E. Kuns, K. D. Hoffman, Frank Hartmann, J. F. de Troconiz, M. G. Albrow, Alan Sill, A. Pompos, Manfred Paulini, N. S. Lockyer, C. N. Chiou, S. R. Amendolia, R. Cropp, M. Tecchio, A. M. Walsh, K. Sliwa, H. Toyoda, J. N. Bellinger, S. Klimenko, E. Kajfasz, R. D. Kennedy, F. Ptohos, S. Bettelli, F. Spinella, K. Kurino, H. H. Williams, C. Ferretti, S. Tkaczyk, David Stuart, J. Valls, Daniel P Cronin-Hennessy, H. Y. Chao, J. Berryhill, S. Lusin, W. J. Robertson, F. Happacher, P. T. Chang, S. Gadomski, James Bensinger, R. G. Feild, J. Guimaraes da-Costa, D. Wolinski, R. L. Wagner, I. Fiori, H. Nakada, J. Boudreau, Mark Kruse, T. Handa, K. Kelley, S. Leone, Dario Bisello, A. Bhatti, A. W. Scott, T. Uchida, C. Miao, Kazuhiko Hara, K. Goulianos, E. Hafen, Paul Tipton, T. Asakawa, Joe Kroll, G. P. Yeh, H. S. Budd, Hiroshi Ikeda, J. Siegrist, Avraham Yagil, Maxwell Chertok, Tony Liss, W. Kowald, G. Introzzi, E. Hayashi, M. L. Chu, Mosè Mariotti, Kevin Burkett, Y. Bonushkin, A. Stefanini, H. Wenzel, R. J. Miller, G. Piacentino, P. Schlabach, E. Cocca, R. C. Webb, James D. Olsen, David Saltzberg, T. Watanabe, T. Kaneko, J. Spalding, S. Blusk, Jochen Jens Heinrich, J. Cassada, A. Mukherjee, Yasuo Fukui, James Proudfoot, G. Punzi, Masaaki Tanaka, T. Okusawa, Igor Volobouev, Teresa Rodrigo, T. J. Phillips, A. Parri, D. Kestenbaum, M. Dell'Orso, P. Mazzanti, W. C. Wester, R. Hamilton, M. Pillai, E. Engels, Yongsun Kim, W. Bokhari, S. Tether, S. Miscetti, K. Biery, Z. Feng, Y. Morita, S. Vejcik, T. Takano, Marjorie Shapiro, T. Shah, M. Atac, Ciro Bigongiari, M. Musy, M. Incagli, P. de Barbaro, Tommaso Dorigo, Y. Seiya, Stefano Belforte, Nikos Giokaris, E. Buckley-Geer, M. Campbell, F. Ukegawa, J. D. Lewis, Marina Cobal, J. Done, J. Huston, J. P. Marriner, Riccardo Paoletti, M. D. Peters, M. Lanzoni, P. Giannetti, G. Latino, M. Shimojima, D. Theriot, Henrik Jeldtoft Jensen, K. Ragan, G. W. Foster, K. Tollefson, P. Sinervo, L. Santi, W. K. Sakumoto, D. Toback, T. Le Compte, M. Barone, T. Takahashi, D. Reher, R. Handler, A. Ribon, D. Errede, G. Bellettini, L. Ristori, P. N. Singh, P. Koehn, T. Saab, G. Martignon, F. Zetti, M. Gold, Andreas Warburton, S. Geer, Luca Stanco, S. Miyashita, Kostantinos Kordas, R. Culbertson, S. Dell'Agnello, Robert M Harris, C. Grosso-Pilcher, C. Smith, Duncan Carlsmith, R. E. Hughes, Y. Kato, D. Neuberger, G. Guillian, Intae Yu, W. Trischuk, C. Holck, R. Vilar, L. Rosenson, P. Murat, C. Haber, Hyun-Chul Kim, Petar Maksimovic, R. Vidal, A. Amadon, E. Kovacs, Leonard Spiegel, E. James, Nicola Bacchetta, T. Ohmoto, Wendy Taylor, J. A.J. Matthews, J. Wahl, N. B. Wallace, N. Bruner, Catherine Newman-Holmes, A. Bodek, J. Iwai, G. Giusti, Andrea Castro, D. Khazins, D. Winn, D. Knoblauch, K. T. Pitts, Yanwen Liu, F. Bedeschi, Q. Fan, Z. Huang, P. F. Shepard, S. H. Oh, C. Yosef, L. E. Kirsch, T. Speer, B. Flaugher, A. Tollestrup, K. Karr, J. Incandela, Alessandro Cerri, T. L. Thomas, B. J. Kim, T. Devlin, J. Conway, P. Mc Intyre, Itsuo Nakano, N. Moggi, R. S. Guo, G. Michail, L. Groer, Alan Garfinkel, G. Bauer, J. Suzuki, A. D. Hardman, F. D. Snider, C. Nelson, R. Ströhmer, T. Shibayama, M. Loreti, A. Titov, Jacobo Konigsberg, P. F. Derwent, R. Wilkinson, Kiminori Kondo, A. Caner, T. Daniels, M. P. Schmidt, M. Lancaster, M. T. Cheng, K. Terashi, R. Takashima, T. Baumann, D. W. Gerdes, Nicola Turini, A. T. Laasanen, C. Couyoumtzelis, M. Lindgren, M. Cordelli, G. Busetto, Brian L Winer, Douglas Benjamin, B. Tannenbaum, P. Azzi-Bacchetta, A. Munar, G. Pauletta, C. Bromberg, R. G. Wagner, N. Parashar, M. Contreras, F. de Jongh, L. Holloway, R. Demina, Scott D. Metzler, L. Demortier, S. P. Pappas, J. Patrick, K. L. Byrum, S. Lami, J. B. Liu, P. Giromini, Anna Zanetti, H. Kasha, B. Hinrichsen, Kevin Einsweiler, W. Hao, S. Zucchelli, R. E. Blair, F. Rimondi, J. Strologas, John Huth, J. W. Chapman, W-M. Yao, E. Meschi, P. Lukens, K. S. Mc Farland, V. Papadimitriou, A. Heiss, L. Pescara, M. Okabe, S. E. Kuhlmann, T. Ohsugi, M. J. Shochet, Frank Chlebana, N. M. Shaw, A. Akopian, J. Yoh, M. W. Baily, Maurice Garcia-Sciveres, P. K. Teng, M. Timko, C. Green, B. Bevensee, J. Steele, P. Melese, Andrey Korytov, R. Thurman-Keup, Cyp Ngan, T. Yoshida, Jay Dittmann, D. Cauz, Y. Teramoto, S. Aota, Michele Gallinaro, E. Moore, S. Worm, D. Amidei, A. T. Goshaw, S. Errede, A. Gordon, W. Erdmann, B. A. Barnett, Giorgio Apollinari, Y. Iwata, Daniela Bortoletto, Teruki Kamon, S. Truitt, Craig Blocker, A. Robinson, Kaori Maeshima, Fumio Abe, K. Takikawa, T. Nakaya, H. Akimoto, A. Perazzo, P. Wilson, S. R. Hahn, M. Menguzzato, J. Antos, Konstanty Sumorok, S. Segler, B. T. Huffman, S. Bagdasarov, R. K. Plunkett, Maria Spiropulu, S. Rolli, and C. Wei
Subjects: Physics, Quark, Particle physics, Branching fraction, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, Elementary particle, Bottom quark, Omega, Standard Model, Nuclear physics, Particle decay, High Energy Physics::Experiment
Abstract: If the technicolor {omega}{sub T} particle exists, a likely decay mode is {omega}{sub T}{r_arrow}{gamma}{pi}{sub T} , followed by {pi}{sub T}{r_arrow}b{bar b} , yielding the signature {gamma}b{bar b} . We have searched 85 pb{sup {minus}1} of data collected by the CDF experiment at the Fermilab Tevatron for events with a photon and two jets, where one of the jets must contain a secondary vertex implying the presence of a b quark. We find no excess of events above standard model expectations. We express the result as an exclusion region in the M{sub {omega}{sub T}}-M{sub {pi}{sub T}} mass plane. {copyright} {ital 1999} {ital The American Physical Society }
Published: 1999

48. Search forR-Parity Violating Supersymmetry Using Like-Sign Dielectrons inpp¯Collisions at√s=1.8TeV

Author: T. Baumann, J. P. Berge, M. Cordelli, G. Busetto, Brian L Winer, L. Christofek, R. G. Wagner, T. Suzuki, F. de Jongh, S. P. Pappas, A. Pompos, Frank Chlebana, J. B. Liu, T. Asakawa, A. Akopian, Maurice Garcia-Sciveres, M. Timko, M. Gold, G. Punzi, E. Engels, Ciro Bigongiari, M. Musy, T. Yoshida, R. E. Blair, F. Rimondi, J. P. Marriner, M. Barone, Robert M Harris, P. Schlabach, J. Cassada, C. Pagliarone, S. Galeotti, S. Vejcik, Intae Yu, D. Lucchesi, H. Grassmann, S. Tkaczyk, David Stuart, T. Takano, F. Strumia, Andrea Castro, D. Khazins, C. Smith, J. Wolinski, T. Takahashi, Luca Stanco, Andrea Sansoni, J. Steele, K. Biery, G. Velev, K. Karr, M. Mangano, E. Kovacs, C. Holck, T. Ohmoto, E. James, S. Donati, Wendy Taylor, C. Haber, Stephan Lammel, J. A.J. Matthews, A. Nomerotski, H. Sato, P. Mc Intyre, R. S. Guo, P. F. Derwent, M. Lancaster, L. Breccia, D. Cronin Hennessy, R. G. Feild, K. Yasuoka, W. Ashmanskas, F. Ptohos, Andrey Korytov, D. Dagenhart, W. J. Robertson, A. Scribano, T. Kuwabara, S. C. van den Brink, J. Tseng, T. Kikuchi, J. Boudreau, G. W. Foster, A. M. Walsh, J. F. de Troconiz, P. Yeh, Y. Bonushkin, David Saltzberg, T. Nakaya, R. J. Miller, Lawrence Nodulman, J. Strologas, G. P. Yeh, Avraham Yagil, H. Akimoto, A. Perazzo, W. Carithers, S. Murgia, Henry J. Frisch, S. R. Hahn, Tony Liss, T. Watanabe, T. Shibayama, M. Loreti, A. Mukherjee, Andrew Beretvas, P. Melese, R. L. Wagner, Hiroshi Ikeda, K. Goulianos, W. Bokhari, C. Ferretti, T. Daniels, R. C. Webb, M. Binkley, R. Oishi, Tommaso Dorigo, Teresa Rodrigo, J. Berryhill, M. G. Albrow, Igor Volobouev, R. Takashima, J. Antos, M. Campbell, M. D. Peters, M. Lanzoni, K. Terashi, Nicola Turini, A. T. Laasanen, R. Hamilton, M. Pillai, S. Miyashita, E. Kajfasz, W-M. Yao, Joe Kroll, Leonard Spiegel, Konstanty Sumorok, T. Shah, E. Meschi, M. W. Bailey, R. Handler, A. J. Martin, Jay Hauser, T. J. Phillips, Y. Morita, P. de Barbaro, B. A. Barnett, Giorgio Apollinari, F. Zetti, H. Y. Chao, K. Ragan, D. Toback, S. Dell'Agnello, C. H. Wang, Jay Dittmann, M. Lindgren, G. Piacentino, E. Cocca, L. Pondrom, E. Wicklund, H. Minato, B. Tannenbaum, S. Gadomski, D. Errede, J. D. Lewis, S. Tether, R. Vilar, S. Segler, T. L. Watts, G. Pauletta, B. T. Huffman, Maxwell Chertok, R. Ely, Teruki Kamon, S. Truitt, T. Saab, A. Amadon, M. Contreras, S. Miscetti, J. Wahl, C. Miao, D. Cauz, N. B. Wallace, Y. Kato, D. Neuberger, Sally Seidel, J. E. Elias, T. Le Compte, Craig Blocker, R. Kephart, T. Kaneko, S. Bagdasarov, James D. Olsen, R. K. Plunkett, Maria Spiropulu, K. Tollefson, G. Guillian, J. Guimaraes Da Costa, J. N. Bellinger, P. Koehn, S. Bettelli, Yanwen Liu, Kostantinos Kordas, Kaori Maeshima, K. T. Pitts, J. Spalding, L. Holloway, Frank Hartmann, B. Flaugher, Alan Sill, J. Incandela, J. Lys, Marina Cobal, Marjorie Shapiro, Catherine Newman-Holmes, Scott D. Metzler, R. E. Hughes, Masaaki Tanaka, W. C. Wester, Kevin Burkett, T. Speer, G. Bellettini, Petar Maksimovic, S. Rolli, Y. Teramoto, J. Valls, D. Wolinski, C. Wei, Michele Gallinaro, R. Roser, J.I. Friedman, S. Blusk, Jochen Jens Heinrich, M. J. Wang, E. Buckley-Geer, Riccardo Paoletti, G. Martignon, T. L. Thomas, J. Conway, R. Ströhmer, J. Patrick, P. Sphicas, A. Titov, Kiminori Kondo, J. Wyss, D. Winn, T. Miao, G. Chiarelli, K. Kelley, S. Leone, F. Tartarelli, Virgil E Barnes, M. Shimojima, P. Sinervo, R. Cropp, Z. Huang, F. Ukegawa, P. Wilson, H. S. Budd, N. Moggi, A. Barbaro Galtieri, Andreas Warburton, F. Spinella, Jacobo Konigsberg, Xin Wu, A. Ribon, M. M. Deninno, O. Long, M. Franklin, P. S. Chang, N. S. Lockyer, M. Reischl, A. Menzione, M. Menguzzato, C. N. Chiou, M. T. Cheng, J. C. Freeman, E. Kuns, M. Tecchio, A. Köngeter, S. Lusin, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, S. Worm, D. Amidei, E. Hafen, A. T. Goshaw, M. Okabe, S. E. Kuhlmann, N. Parashar, N. M. Shaw, S. Errede, Q. Fan, A. Tollestrup, J. Yoh, T. Devlin, M. Mishina, Y. Gotra, S. Behrends, A. B. Wicklund, W. Erdmann, E. E. Schmidt, K. L. Byrum, K. D. Hoffman, H. Toyoda, Marcus Hohlmann, T. Handa, A. G. Clark, H. Wenzel, M. Incagli, G. Latino, D. Theriot, Duncan Carlsmith, P. Giromini, Mark Kruse, D. Knoblauch, Paul Tipton, B. Bevensee, Anna Zanetti, H. Kasha, B. Hinrichsen, Hyun-Chul Kim, B. J. Kim, L. Demortier, W. Hao, John Huth, J. W. Chapman, P. Lukens, K. S. Mc Farland, V. Papadimitriou, A. Caner, A. Heiss, L. Pescara, S. Cihangir, H. H. Williams, R. Vidal, W. Kowald, G. Introzzi, A. Stefanini, N. Bruner, M. Atac, P. F. Shepard, S. H. Oh, Manfred Paulini, Itsuo Nakano, D. Reher, G. Michail, L. Groer, Alan Garfinkel, J. Suzuki, R. Wilkinson, H. Nakada, G. Giusti, Yongsun Kim, A. Parri, Nikos Giokaris, D. Kestenbaum, M. Dell'Orso, P. N. Singh, L. Rosenson, L. Santi, L. E. Kirsch, C. Nelson, Douglas Benjamin, R. Demina, A. Byon-Wagner, Tetsuo Arisawa, N. Eddy, O. Ganel, R. J. Hollebeek, J. I. Lamoureux, R. D. Kennedy, J. Siegrist, S. Zuccelli, Umesh Joshi, J. Cooper, S. H. Kim, D. Vucinic, F. Semeria, T. A. Keaffaber, D. Costanzo, Th. Müller, S. R. Amendolia, K. Sliwa, S. Klimenko, K. Kurino, I. Fiori, A. W. Scott, James Bensinger, Kazuhiko Hara, James Proudfoot, Yasuo Fukui, T. Okusawa, P. Mazzanti, P. Gianetti, Stefano Belforte, Hiroto Kambara, J. Done, J. Huston, Henrik Jeldtoft Jensen, Kenneth Bloom, R. Culbertson, A. Bodek, J. Iwai, C. Yosef, Alessandro Cerri, L. Ristori, R. Thurman-Keup, Cyp Ngan, T. Uchida, E. Hayashi, M. L. Chu, Mosè Mariotti, W. Trischuk, S. Aota, Z. Feng, Nicola Bacchetta, E. Moore, W. K. Sakumoto, S. Geer, F. Bedeschi, C. Grosso-Pilcher, A. Gordon, T. Ohsugi, M. J. Shochet, M. P. Schmidt, P. K. Teng, C. Couyoumtzelis, C. Green, Y. Iwata, Daniela Bortoletto, P. Azzi-Bacchetta, A. Robinson, C. Bromberg, Fumio Abe, K. Takikawa, S. Lami, Kevin Einsweiler, Gino Bolla, Rossella Brunetti, Y. Seiya, P. Murat, G. Bauer, A. D. Hardman, F. D. Snider, D. W. Gerdes, and S. Bertolucci
Subjects: Physics, Particle physics, Top quark, Gluino, Pair production, Branching fraction, R-parity, Neutralino, General Physics and Astronomy, Elementary particle, Boson
Abstract: We present a search for like-sign dielectron plus multijet events using $107{\mathrm{pb}}^{\ensuremath{-}1}$ of data in $p\overline{p}$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\mathrm{TeV}$ collected in 1992--1995 by the CDF experiment. Finding no events that pass our selection, we set $\ensuremath{\sigma}\ifmmode\times\else\texttimes\fi{}\mathrm{BR}$ limits on two supersymmetric processes that can produce this experimental signature: gluino-gluino or squark-antisquark production with $R$-parity violating decays of the charm squark or lightest neutralino via a nonzero ${\ensuremath{\lambda}}_{121}^{\ensuremath{'}}$ coupling. We compare our results to the next-to-leading order calculations for gluino and squark production cross sections and set lower limits on $M(\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{g})$, $M({\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{t}}_{1})$, and $M(\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{q})$.
Published: 1999

49. Search for New Particles Decaying tobb¯inpp¯Collisions at√s=1.8TeV

Author: G. Velev, S. Vejcik, A. Parri, D. Kestenbaum, M. Dell'Orso, T. Takano, P. Melese, T. Shibayama, M. Loreti, H. Sato, Stephan Lammel, M. Mangano, M. Mishina, S. Gadomski, C. Miao, S. Tkaczyk, David Stuart, T. Daniels, R. G. Feild, A. Barbaro-Galtieri, Y. Gotra, Maxwell Chertok, R. Ely, D. Vucinic, F. Semeria, T. Takahashi, J. W. Chapman, Luca Stanco, K. Terashi, G. P. Yeh, T. Kuwabara, A. J. Martin, Nicola Turini, A. T. Laasanen, Tony Liss, T. A. Keaffaber, S. Behrends, M. Shimojima, P. N. Singh, W. Carithers, S. Murgia, H. H. Williams, L. Pondrom, E. Wicklund, A. M. Walsh, A. B. Wicklund, R. Vidal, Andreas Warburton, K. Kurino, Teresa Rodrigo, E. Hayashi, M. L. Chu, Marjorie Shapiro, Mosè Mariotti, N. Bruner, T. Kikuchi, C. Pagliarone, Z. Feng, S. Galeotti, C. Haber, W. Kowald, G. Introzzi, A. Stefanini, Kazuhiko Hara, W. K. Sakumoto, P. F. Shepard, S. H. Oh, P. Yeh, S. Geer, T. L. Thomas, C. Grosso-Pilcher, T. J. Phillips, Y. Morita, S. Blusk, Jochen Jens Heinrich, K. Ragan, Y. Bonushkin, I. Fiori, A. W. Scott, L. Rosenson, Itsuo Nakano, G. Michail, J. R. Bensinger, L. Groer, E. S. Hafen, Alan Garfinkel, J. Suzuki, R. Takashima, R. Wilkinson, E. Buckley-Geer, M. Atac, Joe Kroll, J. E. Elias, E. E. Schmidt, Hiroto Kambara, D. Lucchesi, H. Grassmann, J. Wolinski, Kenneth Bloom, Jay Dittmann, R. K. Plunkett, N. Moggi, J. Strologas, Riccardo Paoletti, S. Bertolucci, P. Sinervo, K. D. Hoffman, F. Ukegawa, D. Cauz, T. Uchida, P. Mc Intyre, R. S. Guo, P. F. Derwent, H. Toyoda, D. Reher, Robert M Harris, J. Wyss, Hyun-Chul Kim, J. P. Berge, G. Chiarelli, M. M. Deninno, Yasuo Fukui, J. Berryhill, M. Lancaster, Marcus Hohlmann, Andrea Castro, Jacobo Konigsberg, L. E. Kirsch, A. Nomerotski, L. Breccia, T. Okusawa, P. Mazzanti, O. Long, J. Bao, D. Khazins, K. Karr, C. H. Wang, M. Lindgren, H. Y. Chao, Michele Gallinaro, E. Kuns, L. Christofek, A. Ribon, S. C. van den Brink, G. Pauletta, M. Contreras, Gino Bolla, G. Giusti, T. Handa, A. Byon-Wagner, M. T. Cheng, T. Asakawa, M. Tecchio, Tetsuo Arisawa, T. Suzuki, B. J. Kim, A. Scribano, B. Tannenbaum, J. Done, W-M. Yao, D. Dagenhart, N. Eddy, O. Ganel, S. Worm, J. Huston, Sally Seidel, R. J. Hollebeek, M. P. Schmidt, A. Pompos, S. Tether, J. Tseng, James D. Olsen, Henry J. Frisch, A. Caner, E. Meschi, J. Lys, J. I. Lamoureux, R. Roser, A. T. Goshaw, Rossella Brunetti, G. Punzi, E. Engels, Ciro Bigongiari, M. Musy, P. Lukens, M. Binkley, F. Ptohos, Frank Chlebana, J. Spalding, C. Couyoumtzelis, M. G. Albrow, J. Boudreau, K. S. Mc Farland, V. Papadimitriou, E. Kajfasz, S. Cihangir, Umesh Joshi, R. Oishi, J. Steele, W. J. Robertson, Jay Hauser, J. P. Marriner, J. Cooper, T. Baumann, M. Barone, C. Ferretti, P. Azzi-Bacchetta, Masaaki Tanaka, H. Wenzel, Avraham Yagil, L. Holloway, Manfred Paulini, David Saltzberg, M. Cordelli, G. Busetto, Brian L Winer, J.I. Friedman, S. H. Kim, K. Tollefson, T. Watanabe, A. Akopian, R. D. Kennedy, A. Heiss, C. Bromberg, R. G. Wagner, F. de Jongh, H. Nakada, W. C. Wester, Scott D. Metzler, H. Minato, Andrey Korytov, N. Parashar, W. Bokhari, M. Campbell, M. D. Peters, J. D. Lewis, M. Timko, S. P. Pappas, F. Strumia, M. Incagli, M. W. Bailey, J. Patrick, P. Sphicas, J. B. Liu, M. Lanzoni, P. Giannetti, J. Siegrist, R. Handler, Stefano Belforte, Andrea Sansoni, Yongsun Kim, G. Latino, D. Theriot, L. Pescara, F. Tartarelli, Virgil E Barnes, Nikos Giokaris, T. Le Compte, S. Donati, S. Dell'Agnello, Leonard Spiegel, P. Koehn, Henrik Jeldtoft Jensen, D. Costanzo, Th. Müller, J. Wahl, T. Kaneko, L. Santi, Kostantinos Kordas, K. Yasuoka, W. Ashmanskas, A. Amadon, S. R. Amendolia, Tomoko Yoshida, N. B. Wallace, S. Errede, K. Sliwa, L. Ristori, S. Klimenko, J. F. de Troconiz, Yanwen Liu, Duncan Carlsmith, P. S. Chang, L. Demortier, R. E. Hughes, S. Zucchelli, R. E. Blair, J. N. Bellinger, S. Bettelli, Daniel P Cronin-Hennessy, B. Flaugher, J. Incandela, W. Trischuk, C. Nelson, Petar Maksimovic, S. Segler, C. Smith, C. Holck, R. Cropp, F. Rimondi, A. Menzione, Y. Seiya, W. Hao, K. Biery, J. Conway, Nicola Bacchetta, R. Ströhmer, M. Franklin, A. Titov, B. T. Huffman, S. Bagdasarov, F. Bedeschi, Hiroshi Ikeda, D. Winn, Z. Huang, R. Culbertson, Kiminori Kondo, Andrew Beretvas, Maria Spiropulu, R. C. Webb, B. A. Barnett, Giorgio Apollinari, John Huth, J. Proudfoot, Kevin Burkett, G. Piacentino, Q. Fan, A. Tollestrup, K. L. Byrum, F. Spinella, D. Amidei, Douglas Benjamin, E. Cocca, E. James, P. Giromini, Teruki Kamon, S. Truitt, P. Murat, T. Shah, Craig Blocker, Anna Zanetti, H. Kasha, B. Hinrichsen, M. Reischl, A. Bodek, L. Nodulman, S. Rolli, C. Wei, Kaori Maeshima, J. Iwai, R. Demina, W. Erdmann, C. Yosef, D. Errede, T. Devlin, G. Bauer, A. D. Hardman, Y. Teramoto, F. D. Snider, R. L. Wagner, K. Goulianos, Y. Kato, D. Neuberger, G. Guillian, P. Wilson, S. Lusin, F. Happacher, P. T. Chang, M. Menguzzato, J. Guimaraes Da Costa, K. T. Pitts, D. W. Gerdes, Catherine Newman-Holmes, T. Speer, Dario Bisello, A. Bhatti, M. Okabe, S. Miyashita, S. E. Kuhlmann, T. Nakaya, H. Akimoto, A. Perazzo, P. Schlabach, S. Lami, N. M. Shaw, J. C. Freeman, Kevin Einsweiler, A. G. Clark, J. Yoh, S. R. Hahn, J. Cassada, A. Cerri, R. Hamilton, J. Antos, Konstanty Sumorok, M. Pillai, S. Miscetti, G. W. Foster, P. de Barbaro, D. Toback, M. Garcia-Sciveres, R. J. Miller, A. Mukherjee, M. J. Wang, T. Miao, Mark Kruse, D. Knoblauch, Marina Cobal, Paul Tipton, Tommaso Dorigo, T. Saab, M. Gold, Xin Wu, A. Köngeter, B. Bevensee, Intae Yu, G. Bellettini, G. Martignon, F. Zetti, N. S. Lockyer, C. N. Chiou, E. Kovacs, T. Ohmoto, R. Vilar, T. L. Watts, R. Kephart, Frank Hartmann, Alan Sill, J. Valls, D. Wolinski, K. Kelley, S. Leone, H. S. Budd, Y. Iwata, Daniela Bortoletto, A. Robinson, Fumio Abe, K. Takikawa, R. Thurman-Keup, Cyp Ngan, S. Aota, E. Moore, A. Gordon, T. Ohsugi, M. J. Shochet, P. K. Teng, Wendy Taylor, and J. A.J. Matthews
Subjects: Baryon, Physics, Particle physics, Meson, Physics::Medical Physics, Hadron, Quark model, General Physics and Astronomy, High Energy Physics::Experiment, Invariant mass, Elementary particle, Collider Detector at Fermilab, Boson
Abstract: We have used $87{\mathrm{pb}}^{\ensuremath{-}1}$ of data collected with the collider detector at Fermilab to search for new particles decaying to $b\overline{b}$. We present model-independent upper limits on the cross section for narrow resonances which exclude the color-octet technirho in the mass interval $350lMl440\mathrm{GeV}{/c}^{2}$. In addition, we exclude top-gluons, predicted in models of top-color-assisted technicolor, of width $\ensuremath{\Gamma}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.3M$ in the mass range $280lMl670\mathrm{GeV}{/c}^{2}$, of width $\ensuremath{\Gamma}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.5M$ in the mass range $340lMl640\mathrm{GeV}{/c}^{2}$, and of width $\ensuremath{\Gamma}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.7M$ in the mass range $375lMl560\mathrm{GeV}{/c}^{2}$.
Published: 1999

50. Measurement of theσ(W+≥1Jet)/σ(W)Cross Section Ratiofromp¯pCollisions at√s=1.8TeV

Author: Tetsuo Arisawa, M. Mishina, James Bensinger, Kazuhiko Hara, T. Ohsugi, Y. Gotra, N. Eddy, O. Ganel, R. J. Hollebeek, S. C. van den Brink, A. Amadon, N. B. Wallace, J. I. Lamoureux, Gino Bolla, M. J. Shochet, S. Behrends, M. Franklin, Rossella Brunetti, Yasuo Fukui, B. Flaugher, J. Incandela, Henry J. Frisch, A. B. Wicklund, T. Okusawa, P. Mazzanti, M. Reischl, R. D. Kennedy, Wendy Taylor, J. A.J. Matthews, J. Conway, J. Done, J. Huston, E. E. Schmidt, J. C. Freeman, T. L. Thomas, P. K. Teng, R. Ströhmer, A. Titov, K. D. Hoffman, Kiminori Kondo, Hiroto Kambara, H. Toyoda, R. Oishi, P. Sphicas, F. Tartarelli, Virgil E Barnes, N. Moggi, J. Siegrist, Y. Seiya, P. Lukens, Marcus Hohlmann, Jacobo Konigsberg, F. Ptohos, W. J. Robertson, R. L. Wagner, K. Goulianos, T. Shibayama, M. Loreti, T. Handa, V. Papadimitriou, P. Murat, S. Gadomski, G. Bauer, A. D. Hardman, F. D. Snider, T. Watanabe, D. W. Gerdes, M. T. Cheng, J. D. Lewis, T. Daniels, C. Miao, A. Köngeter, Umesh Joshi, J. Cooper, M. W. Bailey, W. Bokhari, T. Uchida, R. Hamilton, M. Pillai, C. Loomis, P. de Barbaro, P. S. Chang, R. Vidal, R. Thurman-Keup, S. H. Kim, A. Parri, K. Terashi, Nicola Turini, A. T. Laasanen, S. Lami, S. Vejcik, Kevin Einsweiler, T. Takano, Cyp Ngan, M. Campbell, M. D. Peters, J. Strologas, M. Lanzoni, P. Giannetti, N. Bruner, G. Piacentino, K. Ragan, D. Toback, H. Y. Chao, D. Lucchesi, A. Menzione, P. Koehn, E. Cocca, D. Kestenbaum, M. Dell'Orso, R. J. Miller, P. F. Shepard, S. H. Oh, T. Saab, Kostantinos Kordas, Q. Fan, R. Handler, A. Tollestrup, N. Parashar, S. Aota, G. Velev, S. Blusk, Jochen Jens Heinrich, A. Mukherjee, J. Wyss, R. E. Hughes, L. Pescara, D. Costanzo, Th. Müller, T. Devlin, M. Gold, S. R. Amendolia, S. Dell'Agnello, G. Chiarelli, E. Moore, F. DeJongh, S. Miscetti, Itsuo Nakano, K. Sliwa, S. Klimenko, A. J. Martin, F. Ukegawa, L. Pondrom, E. Wicklund, T. Takahashi, Petar Maksimovic, M. M. Deninno, C. Smith, G. Michail, L. Groer, Alan Garfinkel, Intae Yu, O. Long, A. Gordon, C. Holck, W-M. Yao, H. Sato, S. Bertolucci, S. Zucchelli, Maxwell Chertok, H. Wenzel, R. Takashima, J. Suzuki, Luca Stanco, A. Ribon, R. Wilkinson, D. Winn, Tommaso Dorigo, J. F. de Troconiz, L. Demortier, E. Kovacs, T. Ohmoto, Marina Cobal, James D. Olsen, E. Meschi, P. Melese, J. P. Berge, Y. Iwata, J. Spalding, T. Kaneko, J. E. Elias, P. N. Singh, Daniela Bortoletto, E. James, C. Haber, Z. Huang, E. Kuns, G. Bellettini, M. Incagli, Hiroshi Ikeda, L. Christofek, M. Tecchio, T. Kuwabara, Sally Seidel, T. Baumann, R. Culbertson, C. H. Wang, M. Lindgren, Stefano Belforte, T. Suzuki, B. Tannenbaum, W. Hao, E. Hayashi, M. L. Chu, G. Latino, Mosè Mariotti, D. Theriot, F. Zetti, Masaaki Tanaka, W. C. Wester, R. C. Webb, A. Pompos, M. Cordelli, G. Busetto, Brian L Winer, Marjorie Shapiro, R. G. Wagner, L. Rosenson, J. Lys, Jay Hauser, A. Bodek, Thomas LeCompte, J. Iwai, W. Carithers, S. Murgia, D. Dagenhart, S. Tkaczyk, David Stuart, P. Limon, John Huth, T. Shah, R. G. Feild, Fumio Abe, M. Shimojima, E. Buckley-Geer, F. Strumia, Riccardo Paoletti, R. Roser, J.I. Friedman, K. Takikawa, J. Tseng, R. Vilar, H. Minato, C. Yosef, T. L. Watts, R. Ely, J. W. Chapman, D. Errede, Alessandro Cerri, S. P. Pappas, F. Spinella, C. Pagliarone, G. P. Yeh, J. B. Liu, L. E. Kirsch, P. Sinervo, Z. Feng, L. Holloway, Scott D. Metzler, Andrea Sansoni, Tony Liss, Andreas Warburton, J. Boudreau, Henrik Jeldtoft Jensen, M. J. Wang, T. Miao, Y. Kato, D. Neuberger, G. Guillian, J. Guimaraes Da Costa, S. Donati, Jay Dittmann, S. Galeotti, H. Grassmann, J. Patrick, J. Berryhill, H. H. Williams, J. N. Bellinger, S. Bettelli, Teresa Rodrigo, R. Kephart, K. T. Pitts, Daniel P Cronin-Hennessy, W. Kowald, G. Introzzi, Catherine Newman-Holmes, T. Speer, K. Yasuoka, W. Ashmanskas, A. Stefanini, Y. Bonushkin, D. Cauz, David Saltzberg, Duncan Carlsmith, T. J. Phillips, Frank Hartmann, Kevin Burkett, M. Atac, Y. Morita, C. Nelson, R. E. Blair, Robert M Harris, F. Rimondi, J. Wolinski, W. K. Sakumoto, Xin Wu, S. Geer, Alan Sill, D. Reher, A. Nomerotski, R. S. Guo, P. F. Derwent, J. Valls, D. Wolinski, G. Giusti, Andrew Beretvas, M. Lancaster, K. Kelley, S. Leone, Douglas Benjamin, H. S. Budd, L. Breccia, R. Demina, Andrea Castro, D. Khazins, D. Knoblauch, C. Grosso-Pilcher, N. S. Lockyer, Y. Teramoto, K. Karr, C. N. Chiou, G. Punzi, A. Scribano, Joe Kroll, Michele Gallinaro, M. Binkley, M. G. Albrow, E. Kajfasz, C. Ferretti, L. Ristori, S. Worm, D. Amidei, A. T. Goshaw, S. Tether, K. Tollefson, K. L. Byrum, W. Trischuk, P. Giromini, S. Errede, Anna Zanetti, H. Kasha, Nicola Bacchetta, B. Hinrichsen, F. Bedeschi, W. Erdmann, A. G. Clark, B. A. Barnett, Giorgio Apollinari, Teruki Kamon, S. Truitt, Mark Kruse, Craig Blocker, Kaori Maeshima, Paul Tipton, B. Bevensee, P. Wilson, M. Menguzzato, J. Steele, Andrey Korytov, M. Okabe, Hyun-Chul Kim, S. E. Kuhlmann, N. M. Shaw, J. Yoh, M. P. Schmidt, C. Couyoumtzelis, P. Azzi-Bacchetta, C. Bromberg, B. J. Kim, A. Barbaro-Galtieri, D. Vucinic, F. Semeria, T. A. Keaffaber, T. Asakawa, K. Kurino, I. Fiori, A. W. Scott, A. Caner, E. Engels, Ciro Bigongiari, M. Musy, J. P. Marriner, M. Barone, James Proudfoot, S. Cihangir, Manfred Paulini, Stephan Lammel, H. Nakada, T. Kikuchi, P. Yeh, Lawrence Nodulman, Yongsun Kim, Nikos Giokaris, L. Santi, Avraham Yagil, H. Akimoto, A. Perazzo, S. R. Hahn, J. Antos, Konstanty Sumorok, S. Segler, B. T. Huffman, S. Bagdasarov, R. K. Plunkett, Maria Spiropulu, Leonard Spiegel, S. Rolli, C. Wei, Peter McIntyre, G. Pauletta, M. Contreras, Frank Chlebana, A. Akopian, Maurice Garcia-Sciveres, M. Timko, T. Yoshida, M. Mangano, A. M. Walsh, P. Schlabach, J. Cassada, K. Biery, G. W. Foster, S. Miyashita, J. Wahl, Yanwen Liu, S. Lusin, F. Happacher, P. T. Chang, Dario Bisello, A. Bhatti, E. Hafen, and A. Byon-Wagner
Subjects: Quantum chromodynamics, Nuclear physics, Physics, Cross section (physics), Transverse plane, Jet (fluid), Luminosity (scattering theory), Proton, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, High Energy Physics::Experiment, Collider Detector at Fermilab, Standard deviation
Abstract: The ratio of the W + ≥ 1 jet cross section to the inclusive W cross section is measured using W±→ e±v events from p¯p collisions at √ = 1.8 TeV. The data are from 108pb−1of integrated luminosity collected with the Collider Detector at Fermilab. Measurements of the cross section ratio for jet transverse energy thresholds(EminT) ranging from 15 to 95 GeV are compared to theoretical predictions using next-to-leading-order QCD calculations. Data and theory agree well for EminT> 25 GeV, where the predictions lie within 1 standard deviation of the measured values. © 1998 The American Physical Society.
Published: 1998

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