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1. Visual Homing for Micro Aerial Vehicles Using Scene Familiarity.

Author: Gerald J. J. van Dalen, Kimberly N. McGuire, and Guido C. H. E. de Croon
Published: 2018
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2. Patient-tailored risk assessment of obstructive coronary artery disease using Rubidium-82 PET-based myocardial flow quantification with visual interpretation

Author: S. S. Koenders, J. A. van Dalen, P. L. Jager, M. Mouden, C. H. Slump, and J. D. van Dijk
Subjects: Radiology, Nuclear Medicine and imaging, Cardiology and Cardiovascular Medicine
Abstract: Introduction Our aim was to estimate the probability of obstructive CAD (oCAD) for an individual patient as a function of the myocardial flow reserve (MFR) measured with Rubidium-82 (Rb-82) PET in patients with a visually normal or abnormal scan. Materials and Methods We included 1519 consecutive patients without a prior history of CAD referred for rest-stress Rb-82 PET/CT. All images were visually assessed by two experts and classified as normal or abnormal. We estimated the probability of oCAD for visually normal scans and scans with small (5%–10%) or larger defects (> 10%) as function of MFR. The primary endpoint was oCAD on invasive coronary angiography, when available. Results 1259 scans were classified as normal, 136 with a small defect and 136 with a larger defect. For the normal scans, the probability of oCAD increased exponentially from 1% to 10% when segmental MFR decreased from 2.1 to 1.3. For scans with small defects, the probability increased from 13% to 40% and for larger defects from 45% to > 70% when segmental MFR decreased from 2.1 to 0.7. Conclusion Patients with > 10% risk of oCAD can be distinguished from patients with
Published: 2023

3. Semi-quantitative assessment of ischemia with rubidium-82 PET myocardial perfusion imaging

Author: N. M. Borren, T. J. Gerritse, J. P. Ottervanger, M. Mouden, J. R. Timmer, J. A. van Dalen, P. L. Jager, and J. D. van Dijk
Subjects: Radiology, Nuclear Medicine and imaging, Cardiology and Cardiovascular Medicine
Published: 2021

4. Added value of coronary artery calcium score in the reporting of SPECT versus PET myocardial perfusion imaging

Author: PL Jager, J. A. van Dalen, JD Van Dijk, and Mohamed Mouden
Subjects: Tomography, Emission-Computed, Single-Photon, medicine.diagnostic_test, business.industry, Coronary artery calcium score, Spect mpi, Myocardial Perfusion Imaging, Ischemia, Coronary Artery Disease, Limiting, medicine.disease, Coronary Vessels, Myocardial perfusion imaging, Coronary artery calcium, Humans, Medicine, Calcium, Radiology, Nuclear Medicine and imaging, Cardiology and Cardiovascular Medicine, Nuclear medicine, business, Rubidium Radioisotopes, Retrospective Studies
Abstract: Knowledge of coronary artery calcium score (CACS) influences the interpretation of myocardial perfusion imaging (MPI) with SPECT; however, the impact on PET interpretation remains unclear. We compared the added value of CACS to reporting MPI using SPECT vs PET. We retrospectively included 412 patients. 206 patients who underwent Rb-82 PET were propensity-based matched to a cohort of 4018 patients who underwent cadmium–zinc–telluride SPECT MPI to obtain a comparable group of 206 SPECT patients. Next, we created four image sets: SPECT MPI-only, PET-only, SPECT + CACS, and PET + CACS. Two physicians interpreted the 824 images as normal, equivocal, or abnormal for ischemia or irreversible defects. Additionally, event rates were compared between PET and SPECT groups during 30-month follow-up. PET yielded more scans interpreted as normal than SPECT (88% vs 80%, respectively, P = 0.015). Adding CACS to SPECT increased the percentage of normal scans to 86% (P = 0.014), whereas this effect was absent for PET (90%, P = 0.77). Annualized event rates for images interpreted as normal did not differ and varied between 0.7 and 2.0% (P > 0.084). Adding CACS correctly increased the percentage of normal scans for SPECT MPI but not for PET, possibly limiting the effect of adding CACS to reporting PET.
Published: 2021

5. Body weight-dependent Rubidium-82 activity results in constant image quality in myocardial perfusion imaging with PET

Author: PL Jager, J. A. van Dalen, J. D. van Dijk, Mohamed Mouden, Jan Paul Ottervanger, Cornelis H. Slump, M. Dotinga, Robotics and Mechatronics, and Digital Society Institute
Subjects: Rubidium-82, medicine.diagnostic_test, business.industry, Image quality, Myocardial perfusion imaging, Radiation dose reduction, Tracer activity, 030204 cardiovascular system & hematology, Body weight, 22/4 OA procedure, 030218 nuclear medicine & medical imaging, Clinical Practice, 03 medical and health sciences, 0302 clinical medicine, medicine, Radiology, Nuclear Medicine and imaging, Patient dose, Cardiology and Cardiovascular Medicine, Nuclear medicine, business, Constant (mathematics), Body mass index
Abstract: Background: Clinical practice shows degrading image quality in heavier patients who undergo myocardial perfusion imaging (MPI) with Rubidium-82 (Rb-82) PET when using a fixed tracer activity. Our aim was to derive and validate a patient-specific activity protocol resulting in a constant image quality in PET MPI. Methods: We included 251 patients who underwent rest MPI with Rb-82 PET (Discovery 670, GE Healthcare). 132 patients were included retrospectively and were scanned using a fixed activity of 740 MBq. The total number of measured prompts was normalized to activity and correlated to body weight, mass per body length and body mass index to find the best predicting parameter. Next, a patient-specific activity was derived and subsequently validated in 119 additional patients. Image quality was scored by three experts on a four-point scale. Results: Both image quality and prompts decreased in heavier patients when using a fixed activity (p .60). Conclusion: Administrating a Rb-82 activity that linearly depends on body weight resulted in a constant image quality across all patients and is recommended.
Published: 2021

6. Effect of temporal sampling protocols on myocardial blood flow measurements using Rubidium-82 PET

Author: S. S. Koenders, Mohamed Mouden, A. G. Tegelaar, PL Jager, J. D. van Dijk, Cornelis H. Slump, J. A. van Dalen, Robotics and Mechatronics, and Digital Society Institute
Subjects: UT-Hybrid-D, Coronary Artery Disease, Regadenoson, Myocardial blood flow, Myocardial perfusion imaging, Coronary Circulation, Temporal sampling, medicine, Humans, Radiology, Nuclear Medicine and imaging, Retrospective Studies, 82rb, Protocol (science), medicine.diagnostic_test, business.industry, Phase time, Myocardial Perfusion Imaging, Sampling (statistics), Blood flow, Pet imaging, PET myocardial perfusion imaging, Rubidium-82, Positron-Emission Tomography, Cardiology and Cardiovascular Medicine, business, Rubidium Radioisotopes, Biomedical engineering, medicine.drug
Abstract: Background A variety of temporal sampling protocols is used worldwide to measure myocardial blood flow (MBF). Both the length and number of time frames in these protocols may alter MBF and myocardial flow reserve (MFR) measurements. We aimed to assess the effect of different clinically used temporal sampling protocols on MBF and MFR quantification in Rubidium-82 (Rb-82) PET imaging. Methods We retrospectively included 20 patients referred for myocardial perfusion imaging using Rb-82 PET. A literature search was performed to identify appropriate sampling protocols. PET data were reconstructed using 14 selected temporal sampling protocols with time frames of 5-10 seconds in the first-pass phase and 30-120 seconds in the tissue phase. Rest and stress MBF and MFR were calculated for all protocols and compared to the reference protocol with 26 time frames. Results MBF measurements differed (P ≤ 0.003) in six (43%) protocols in comparison to the reference protocol, with mean absolute relative differences up to 16% (range 5%-31%). Statistically significant differences were most frequently found for protocols with tissue phase time frames P ≥ 0.11) for any of the protocols. Conclusions Various temporal sampling protocols result in different MBF values using Rb-82 PET. MFR measurements were more robust to different temporal sampling protocols.
Published: 2022

7. Machine learning based model to diagnose obstructive coronary artery disease using calcium scoring, PET imaging, and clinical data

Author: J A, van Dalen, S S, Koenders, R J, Metselaar, B N, Vendel, D J, Slotman, M, Mouden, C H, Slump, and J D, van Dijk
Abstract: Accurate risk stratification in patients with suspected stable coronary artery disease is essential for choosing an appropriate treatment strategy. Our aim was to develop and validate a machine learning (ML) based model to diagnose obstructive CAD (oCAD).We retrospectively have included 1007 patients without a prior history of CAD who underwent CT-based calcium scoring (CACS) and a Rubidium-82 PET scan. The entire dataset was split 4:1 into a training and test dataset. An ML model was developed on the training set using fivefold stratified cross-validation. The test dataset was used to compare the performance of expert readers to the model. The primary endpoint was oCAD on invasive coronary angiography (ICA).ROC curve analysis showed an AUC of 0.92 (95% CI 0.90-0.94) for the training dataset and 0.89 (95% CI 0.84-0.93) for the test dataset. The ML model showed no significant differences as compared to the expert readers (p ≥ 0.03) in accuracy (89% vs. 88%), sensitivity (68% vs. 69%), and specificity (92% vs. 90%).The ML model resulted in a similar diagnostic performance as compared to expert readers, and may be deployed as a risk stratification tool for obstructive CAD. This study showed that utilization of ML is promising in the diagnosis of obstructive CAD.
Published: 2022

8. Semi-automatic Image Registration of MRI to CT Data of the Prostate Using Gold Markers as Fiducials.

Author: J. A. van Dalen, Henkjan J. Huisman, A. Welmers, and Jelle O. Barentsz
Published: 2003
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9. Cerebral Perfusion Measurements in Elderly with Hypertension Using Arterial Spin Labeling.

Author: H J M M Mutsaerts, J W van Dalen, D F R Heijtel, P F C Groot, C B L M Majoie, E T Petersen, E Richard, and A J Nederveen
Subjects: Medicine, Science
Abstract: The current study assesses the feasibility and value of crushed cerebral blood flow (CBFcrushed) and arterial transit time (ATT) estimations for large clinical imaging studies in elderly with hypertension.Two pseudo-continuous arterial spin labeling (ASL) scans with (CBFcrushed) and without flow crushers (CBFnon-crushed) were performed in 186 elderly with hypertension, from which CBF and ATT maps were calculated. Standard flow territory maps were subdivided into proximal, intermediate and distal flow territories, based on the measured ATT. The coefficient of variation (CV) and physiological correlations with age and gender were compared between the three perfusion parameters.There was no difference in CV between CBFcrushed and CBFnon-crushed (15-24%, p>0.4) but the CV of ATT (4-9%) was much smaller. The total gray matter correlations with age and gender were most significant with ATT (p = .016 and p
Published: 2015
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10. Entropy-based myocardial blood flow measurements using PET: a way to improve reproducibility

Author: PL Jager, JD Van Dijk, J. A. van Dalen, BN Vendel, and S. S. Koenders
Subjects: Reproducibility, business.industry, Coronary arteriosclerosis, General Medicine, Blood flow, Regadenoson, Rubidium-82, Medical imaging, Medicine, Radiology, Nuclear Medicine and imaging, Entropy (energy dispersal), Cardiology and Cardiovascular Medicine, business, Biomedical engineering, medicine.drug
Abstract: Funding Acknowledgements Type of funding sources: None. Background and purpose Myocardial blood flow (MBF) measurements using PET are increasingly used to guide the management of patients with (suspected) coronary artery disease (CAD). Day-to-day variability of these measurements is poor with a 21% standard deviation or 40% 95%-confidence interval [Reference: JACC Cardiovasc Imaging, 2017;10(5):565]. This limits clinical applicability in diagnosis, risk stratification and follow-up as these all depend on comparison of flow values with fixed cut-off values. We expect that reproducibility can be improved by combining flow measurements with the variation of flow values within the myocardium. As entropy is a measure of variability of the associated distribution, we compared the reproducibility of an entropy-based flow parameter with that of conventional myocardial flow reserve (MFR) measurements. Methods We performed a study using intra-individual comparison in 24 patients who underwent rest and regadenoson-induced stress myocardial perfusion imaging using Rubidium-82 on two different PET systems (PET1: Discovery 690, GE Healthcare, and PET2: Vereos, Philips Healthcare) within 3 weeks. MBF for both rest and stress was calculated using Lortie’s one-tissue compartment model (Corridor4DM, INVIA). MFR (ratio of MBF stress/rest) was determined for the myocardial as a whole (MFRglobal), for the three vascular territories: LAD, LCX and RCA (MFRregional) and for the 17 segments. Next, we calculated Shannon’s entropy to measure the variation of the 17 MFR segmental values. We multiplied Shannon’s entropy by the mean of the MFR segmental values resulting in an entropy-based MFR (MFRentropy). For each patient MFRglobal, MFRregional and MRFentropy were compared between both PET systems. For each of the three parameters the test-retest precision was calculated as the SD of the relative difference between measurements. Results The mean difference in MFR measurements between both cameras did not differ from zero (p > 0.05). Mean values for PET1 were MFRglobal = 2.4, MFRregional = 2.4 (LAD), 2.4 (LCX) and 2.5 (RCA), and MFRentropy = 2.4. For PET2 we found MFRglobal = 2.5, MFRregional = 2.5 (LAD), 2.4 (LCX) and 2.6 (RCA), and MFRentropy = 2.5. Test-retest precision was lower for MFRentropy with 11% compared to that of MFRglobal (21%), MFRregional LAD (22%), MFRregional LCX (23%) and MFRregional RCA (24%) (p Conclusion The reproducibility of myocardial flow reserve measurements using Rubidium-82 PET improved by a factor of 2 when an entropy-based flow parameter instead of global or regional MFR parameters is used. This entropy-based flow-parameter may be used to better discriminate ischemia from non-ischemia and may therefore improve CAD management.
Published: 2021

11. Value of coronary artery calcium score in reporting SPECT versus PET myocardial perfusion imaging

Author: PL Jager, JD Van Dijk, J. A. van Dalen, and Mohamed Mouden
Subjects: medicine.medical_specialty, medicine.diagnostic_test, business.industry, medicine.medical_treatment, Ischemia, General Medicine, Single-photon emission computed tomography, medicine.disease, Revascularization, Coronary Calcium Score, Rubidium-82, Myocardial perfusion imaging, Coronary artery bypass surgery, Internal medicine, Cardiology, Medicine, Radiology, Nuclear Medicine and imaging, Myocardial infarction, Cardiology and Cardiovascular Medicine, business
Abstract: Funding Acknowledgements Type of funding sources: None. Background Although it is well known that coronary artery calcium score (CACS) adds value to reporting myocardial perfusion imaging (MPI) SPECT, its added value to reporting PET MPI is not clear. Purpose Hence, our aim was determine the value of adding CACS in the assessment of PET MPI and SPECT MPI and compare the value between both modalities in a low-risk population. Methods We retrospectively included 412 patients, half of them underwent SPECT with CACS and half underwent Rubidium-82 PET with CACS. We created comparable groups using propensity matching, where the PET group was 1:1 matched to a comparable SPECT group, obtained from a large cohort of 4018. Next, we created two types of image sets for the 412 included patients: MPI-only and MPI + CACS. Two experienced physicians interpreted the 824 images as normal, equivocal or abnormal for ischemia or irreversible defects and were blinded for the used modality. In addition, annualized event rates, defined as the occurrence of all-cause death, non-fatal myocardial infarction or revascularization therapy (PCI or CABG), were compared between the PET and SPECT groups using a follow-up period of 30 months. Results The percentage of scans interpreted as normal was 8% higher with PET-only than with SPECT-only (89 vs 80%, respectively, p = 0.014). Adding CACS to SPECT increased the percentage of scans interpreted as normal from 80% to 86% (p = 0.014), whereas this effect was absent for PET (p = 0.77). Adding CACS reduced the frequency of equivocal scans from 12% and 6% to 0% for both SPECT and PET, respectively. Furthermore, adding CACS resulted in 5% more abnormal interpreted scans for both PET (4.9 to 10%, p = 0.003) and SPECT (8.7 to 14%, p = 0.04). The annualized event rate was 2.7% for the SPECT and 3.5% for the PET group (p = 0.58). The annualized event rates for images interpreted as normal were comparable between all four types of image sets and varied between 0.7-2.0% (p > 0.084). The annualized event rate for equivocal and abnormal scans was higher for PET-only (23%) compared to SPECT-only (4.8%, p Conclusion Adding CACS increases the percentage of scans interpreted as normal for SPECT MPI while the event rate remained unchanged. Adding CACS to PET did not influence the percentage of scans interpreted as normal, limiting the effect of adding CACS to PET in a low-risk population.
Published: 2021

12. Value of regional myocardial flow measurements using Rubidium-82 PET

Author: S. S. Koenders, Mohamed Mouden, PL Jager, J. A. van Dalen, Cornelis H. Slump, and JD Van Dijk
Subjects: Coronary angiography, medicine.diagnostic_test, business.industry, Flow (psychology), Coronary arteriosclerosis, General Medicine, Regadenoson, Rubidium-82, Myocardial perfusion imaging, Nuclear magnetic resonance, Area under curve, Medicine, Radiology, Nuclear Medicine and imaging, Cardiology and Cardiovascular Medicine, business, medicine.drug
Abstract: Funding Acknowledgements Type of funding sources: None. Introduction The combination of myocardial blood flow (MBF) measurements using Rubidium-82 (Rb-82) PET and visual assessment of the PET images is increasingly used due to its high diagnostic and prognostic value. Typically, flow measurements are calculated and used for the myocardium as a whole (global). However, small regional flow deficits may go unnoticed when only looking at global flow values. Purpose To compare the diagnostic value of regional and global myocardial flow measurements using Rb-82 PET in the detection of obstructive CAD. Methods We retrospectively included 1034 patients with no history of coronary artery disease (CAD) referred for rest and regadenoson-induced stress Rb-82 PET/CT. MBFs were calculated using Lortie’s one-tissue compartment model. Myocardial flow reserve (MFR) was calculated as the ratio of MBF during stress and rest. Regional flow was determined per vessel and per segment. Vessel MFR was defined as the lowest flow reserve of LAD, LCX and RCA territories and segmental MFR as the lowest flow reserve in all 17 segments. Follow-up data were obtained from medical records. Patients were classified to have obstructive CAD if follow-up included a positive invasive coronary angiography (ICA), percutaneous coronary intervention (PCI), coronary artery bypass grafting (CABG) or all cause death. Receiver-operating characteristic (ROC) analyses were constructed to compare the diagnostic value of global and regional flow values. Results Follow-up was obtained in all 1034 patients and the median follow-up time was 2.1 years. Myocardial flow reserve values were significantly lower (p Conclusion The diagnostic value improved with the use of regional MFR instead of global MFR measurements in the detection of obstructive CAD. Therefore, it seems that visual assessment of PET images can best be combined with regional flow measurements either on a per vessel or a per segment basis in Rubidium-82 PET myocardial perfusion imaging.
Published: 2021

13. Prediction of obstructive coronary artery disease after Rb-82 PET myocardial perfusion imaging and coronary artery calcium scoring using machine learning

Author: Mohamed Mouden, BN Vendel, JD Van Dijk, RJ Metselaar, J. A. van Dalen, and Cornelis H. Slump
Subjects: medicine.medical_specialty, medicine.diagnostic_test, business.industry, medicine.medical_treatment, Percutaneous coronary intervention, General Medicine, medicine.disease, Coronary Calcium Score, Regadenoson, Coronary artery disease, Rubidium-82, Myocardial perfusion imaging, Coronary artery bypass surgery, Internal medicine, Cardiology, Medicine, Radiology, Nuclear Medicine and imaging, Cardiology and Cardiovascular Medicine, business, Coronary Artery Calcium Scoring, medicine.drug
Abstract: Funding Acknowledgements Type of funding sources: None. Background Accurate risk stratification in patients with suspected stable coronary artery disease (CAD) is essential for choosing an appropriate treatment strategy but remains challenging in clinical practice. Purpose Our aim was to develop and validate a risk model to predict the presence of obstructive CAD after Rubidium-82 PET and a coronary artery calcium score (CACS) scan using a machine learning (ML) algorithm. Methods We retrospectively included 1007 patients without prior cardiovascular history and a low-intermediate pre-test likelihood, referred for rest and regadenoson-induced stress Rubidium-82 PET combined with a CACS scan. Multiple features were included in the ML model; PET derived features such as summed difference score and flow values, CACS, cardiovascular risk factors (cigarette smoking, hypertension, hypercholesterolemia, diabetes, positive family history of CAD), medication; age; gender; body mass index; creatinine serum values; and visual PET interpretation. An XGBoost ML algorithm was developed using a subset of 805 patients to predict obstructive CAD by using 5-fold cross validation in combination with a grid search. Obstructive CAD during follow-up was defined as a significant stenosis during invasive coronary angiography, a percutaneous coronary intervention or a coronary artery bypass graft procedure. The ML algorithm was validated with unseen data of the remaining 202 patients. Results Application of the XGBoost algorithm resulted in an area under the curve (AUC) of 0.93 using the training data (n = 805) and an AUC of 0.89 using the unseen data (n = 202) in predicting obstructive CAD. The strongest predictors were the CAC-scores and quantitative PET derived features. The classical risk factors and medication hardly provided an added value in the prediction of obstructive CAD. Conclusion The developed ML algorithm is able to provide individualized risk stratification by predicting the probability of obstructive CAD. Although validation with a larger dataset could result in a more well defined performance range, this model already shows potential to be implemented in the diagnostic workflow.
Published: 2021

14. The next step in improving (semi-)quantitative MPI PET

Author: S. S. Koenders, J. A. van Dalen, and JD Van Dijk
Subjects: medicine.medical_specialty, business.industry, MEDLINE, Medicine, Radiology, Nuclear Medicine and imaging, Medical physics, Cardiology and Cardiovascular Medicine, business, Semi quantitative
Published: 2020

15. Clinical value of machine learning-based interpretation of I-123 FP-CIT scans to detect Parkinson's disease: a two-center study

Author: J. A. van Dalen, J. D. van Dijk, BN Vendel, Cornelis H. Slump, A. T. Portman, M. Dotinga, Digital Society Institute, and Robotics and Mechatronics
Subjects: Artificial intelligence, Parkinson's disease, I-123 FP-CIT, Machine learning, computer.software_genre, Diagnostic aid, 030218 nuclear medicine & medical imaging, Age and gender, 03 medical and health sciences, 0302 clinical medicine, Spect imaging, Medicine, Radiology, Nuclear Medicine and imaging, Generalizability theory, business.industry, General Medicine, medicine.disease, Clinical Practice, Support vector machine, 030220 oncology & carcinogenesis, SPECT, Clinical value, SVM-model, business, computer
Abstract: Purpose: Our aim was to develop and validate a machine learning (ML)-based approach for interpretation of I-123 FP-CIT SPECT scans to discriminate Parkinson’s disease (PD) from non-PD and to determine its generalizability and clinical value in two centers. Methods: We retrospectively included 210 consecutive patients who underwent I-123 FP-CIT SPECT imaging and had a clinically confirmed diagnosis. Linear support vector machine (SVM) was used to build a classification model to discriminate PD from non-PD based on I-123-FP-CIT striatal uptake ratios, age and gender of 90 patients. The model was validated on unseen data from the same center where the model was developed (n = 40) and consecutively on data from a different center (n = 80). Prediction performance was assessed and compared to the scan interpretation by expert physicians. Results: Testing the derived SVM model on the unseen dataset (n = 40) from the same center resulted in an accuracy of 95.0%, sensitivity of 96.0% and specificity of 93.3%. This was identical to the classification accuracy of nuclear medicine physicians. The model was generalizable towards the other center as prediction performance did not differ thereby obtaining an accuracy of 82.5%, sensitivity of 88.5% and specificity of 71.4% (p = NS). This was comparable to that of nuclear medicine physicians (p = NS). Conclusion: ML-based interpretation of I-123-FP-CIT scans results in accurate discrimination of PD from non-PD similar to visual assessment in both centers. The derived SVM model is therefore generalizable towards centers using comparable acquisition and image processing methods and implementation as diagnostic aid in clinical practice is encouraged.
Published: 2021

16. Clinical value of machine learning-based interpretation of I-123 FP-CIT scans to detect Parkinson's disease: a two-center study

Author: M, Dotinga, J D, van Dijk, B N, Vendel, C H, Slump, A T, Portman, and J A, van Dalen
Subjects: Machine Learning, Male, Tomography, Emission-Computed, Single-Photon, Image Interpretation, Computer-Assisted, Humans, Female, Parkinson Disease, Middle Aged, Aged, Retrospective Studies, Tropanes
Abstract: Our aim was to develop and validate a machine learning (ML)-based approach for interpretation of I-123 FP-CIT SPECT scans to discriminate Parkinson's disease (PD) from non-PD and to determine its generalizability and clinical value in two centers.We retrospectively included 210 consecutive patients who underwent I-123 FP-CIT SPECT imaging and had a clinically confirmed diagnosis. Linear support vector machine (SVM) was used to build a classification model to discriminate PD from non-PD based on I-123-FP-CIT striatal uptake ratios, age and gender of 90 patients. The model was validated on unseen data from the same center where the model was developed (n = 40) and consecutively on data from a different center (n = 80). Prediction performance was assessed and compared to the scan interpretation by expert physicians.Testing the derived SVM model on the unseen dataset (n = 40) from the same center resulted in an accuracy of 95.0%, sensitivity of 96.0% and specificity of 93.3%. This was identical to the classification accuracy of nuclear medicine physicians. The model was generalizable towards the other center as prediction performance did not differ thereby obtaining an accuracy of 82.5%, sensitivity of 88.5% and specificity of 71.4% (p = NS). This was comparable to that of nuclear medicine physicians (p = NS).ML-based interpretation of I-123-FP-CIT scans results in accurate discrimination of PD from non-PD similar to visual assessment in both centers. The derived SVM model is therefore generalizable towards centers using comparable acquisition and image processing methods and implementation as diagnostic aid in clinical practice is encouraged.
Published: 2020

17. Value of SiPM PET in myocardial perfusion imaging using Rubidium-82

Author: S. S. Koenders, J. A. van Dalen, Jorik R. Timmer, Pieter L. Jager, Mohamed Mouden, J. D. van Dijk, Siert Knollema, Cornelis H. Slump, and Robotics and Mechatronics
Subjects: Photomultiplier, Materials science, Image quality, UT-Hybrid-D, Coronary Artery Disease, Myocardial blood flow, Myocardial perfusion imaging, Silicon photomultiplier, Coronary Circulation, medicine, Humans, Radiology, Nuclear Medicine and imaging, Image resolution, medicine.diagnostic_test, business.industry, Philips healthcare, Blood flow, SiPM PET, Rubidium-82, Rb-82, PET, Pet scanner, Positron-Emission Tomography, Cardiology and Cardiovascular Medicine, business, Nuclear medicine, Tomography, X-Ray Computed, Rubidium Radioisotopes, Biomedical engineering
Abstract: Background PET scanners using silicon photomultipliers with digital readout (SiPM PET) have an improved temporal and spatial resolution compared to PET scanners using conventional photomultiplier tubes (PMT PET). However, the effect on image quality and visibility of perfusion defects in myocardial perfusion imaging (MPI) is unknown. Our aim was to determine the value of a SiPM PET scanner in MPI. Methods We prospectively included 30 patients who underwent rest and regadenoson-induced stress Rubidium-82 (Rb-82) MPI on the D690 PMT PET (GE Healthcare) and within three weeks on the Vereos SiPM PET (Philips Healthcare). Two expert readers scored the image quality and assessed the existence of possible defects. In addition, interpreter’s confidence, myocardial blood flow (MBF), and myocardial flow reserve (MFR) values were compared. Results Image quality improved (P = 0.03) using the Vereos as compared to the D690. Image quality of the Vereos and the D690 was graded fair in 20% and 10%, good in 60% and 50%, and excellent in 20% and 40%, respectively. Defect interpretation and interpreter’s confidence did not differ between the D690 and the Vereos (P > 0.50). There were no significant differences in rest MBF (P ≥ 0.29), stress MBF (P ≥ 0.11), and MFR (P ≥ 0.51). Conclusion SiPM PET provides an improved image quality in comparison with PMT PET. Defect interpretation, interpreter’s confidence, and absolute blood flow measurements were comparable between both systems. SiPM PET is therefore a reliable technique for MPI using Rb-82. Trial registration ToetsingOnline NL63853.075.17. Registered 13 November, 2017.
Published: 2020
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18. Effect of a patient-specific minimum activity in stress myocardial perfusion imaging using CZT-SPECT: Prognostic value, radiation dose, and scan outcome

Author: J. A. van Dalen, Mohamed Mouden, PL Jager, Nanette M. Borren, J. D. van Dijk, and Jan Paul Ottervanger
Subjects: Male, medicine.medical_specialty, Radiation dose reduction, UT-Hybrid-D, High radiation, Coronary Artery Disease, 030204 cardiovascular system & hematology, Radiation Dosage, 030218 nuclear medicine & medical imaging, Electrocardiography, 03 medical and health sciences, Myocardial perfusion imaging, 0302 clinical medicine, medicine, Humans, Gamma Cameras, Radiology, Nuclear Medicine and imaging, Myocardial infarction, Radionuclide Imaging, High-efficiency camera, stress-only, Aged, Retrospective Studies, Tomography, Emission-Computed, Single-Photon, medicine.diagnostic_test, business.industry, Body Weight, Radiation dose, Myocardial Perfusion Imaging, myocardial perfusion imaging: SPECT, Middle Aged, Patient specific, Prognosis, medicine.disease, Zinc, CdZnTe, Female, Radiology, Radiopharmaceuticals, Tellurium, Cardiology and Cardiovascular Medicine, Nuclear medicine, business, Cadmium, Follow-Up Studies
Abstract: Background: SPECT Myocardial perfusion imaging (MPI) is associated with a relatively high radiation burden and decreasing image quality in heavy patients. Patient-specific low-activity protocols (PLAPs) are suggested but follow-up data is lacking. Our aim was to compare the use of a standard fixed-activity protocol (FAP) with a PLAP in cadmium zinc telluride (CZT)-SPECT MPI. Methods: We retrospectively included 1255 consecutive patients who underwent CZT-SPECT stress-optional rest MPI. 668 Patients were scanned using FAP (370 MBq) and 587 patients using PLAP (2.25 MBq·kg−1). Percentage of scans interpreted as normal, radiation dose, and 1-year follow-up including hard event rates (all-cause death or non-fatal myocardial infarction) were collected and compared. Results: The percentage of scans interpreted as normal was 67% in FAP and 70% in PLAP groups (P = .29). The annualized hard event rates in these patients were 1.0% in the FAP and 0.9% in the PLAP group (P = .86). However, the mean radiation dose decreased by 23% for stress-only and by 15% to 2.6 mSv for stress-optional rest MPI after introduction of the PLAP (p
Published: 2017

19. P311Minimization of temporal sampling for myocardial blood flow quantification using Rubidium-82 PET

Author: S Koenders, J D Van Dijk, P L Jager, J P Ottervanger, C H Slump, and J A Van Dalen
Subjects: Radiology, Nuclear Medicine and imaging, General Medicine, Cardiology and Cardiovascular Medicine
Published: 2019

20. P395More normal scans but comparable post-test referral after myocardial perfusion imaging with PET compared to CZT-SPECT in a propensity score matched cohort

Author: J D Van Dijk, M Mouden, J P Ottervanger, J A Van Dalen, S Knollema, and P L Jager
Subjects: Radiology, Nuclear Medicine and imaging, General Medicine, Cardiology and Cardiovascular Medicine
Published: 2019

21. How to detect and correct myocardial creep in myocardial perfusion imaging using Rubidium-82 PET?

Author: S. S. Koenders, Cornelis H. Slump, PL Jager, Jan Paul Ottervanger, J. A. van Dalen, and J. D. van Dijk
Subjects: UT-Hybrid-D, 030204 cardiovascular system & hematology, Myocardial blood flow, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, Myocardial perfusion imaging, 0302 clinical medicine, Time frame, myocardial creep, Humans, Medicine, Organ Motion, Radiology, Nuclear Medicine and imaging, Rb, medicine.diagnostic_test, business.industry, Technical Corner, Myocardial Perfusion Imaging, Reproducibility of Results, Heart, Blood flow, PET myocardial perfusion imaging, Rubidium-82, Induced stress, Creep, Positron-Emission Tomography, pharmacological vasodilators, Cardiology and Cardiovascular Medicine, business, Rubidium Radioisotopes, 82Rb, Biomedical engineering
Abstract: Reliability of myocardial blood flow (MBF) quantification in myocardial perfusion imaging (MPI) using PET can majorly be affected by the occurrence of myocardial creep when using pharmacologically induced stress. In this paper, we provide instructions on how to detect and correct for myocardial creep. For example, in each time frame of the PET images the myocardium contour and the observed activity have to be compared to check for misalignments. In addition, we provide an overview of the functionality of commonly used software packages to perform this quality control step as not all software packages currently provide this functionality. Furthermore, important clinical considerations to obtain accurate MBF measurements are given.
Published: 2019

22. P313Body-weight dependent Rubidium-82 activity required for constant image quality in myocardial perfusion imaging with PET

Author: J. A. van Dalen, M. Dotinga, PL Jager, JD Van Dijk, Jan Paul Ottervanger, Cornelis H. Slump, and Mohamed Mouden
Subjects: Rubidium-82, Myocardial perfusion imaging, medicine.diagnostic_test, business.industry, Image quality, medicine, Radiology, Nuclear Medicine and imaging, General Medicine, Cardiology and Cardiovascular Medicine, Constant (mathematics), Body weight, business, Biomedical engineering
Published: 2019

23. P394Feasibility of a digital PET system for myocardial blood flow quantification using Rubidium-82 PET

Author: S S Koenders, J A Van Dalen, P L Jager, M Mouden, C H Slump, and J D Van Dijk
Subjects: Radiology, Nuclear Medicine and imaging, General Medicine, Cardiology and Cardiovascular Medicine
Published: 2019

24. 357Cost-effectiveness of sequential SPECT/CT imaging approach for detection of coronary artery disease in comparison to standard care: a multi-center study

Author: J D Van Dijk, P L Jager, M Mouden, J A Van Dalen, J P Ottervanger, and S Knollema
Subjects: Radiology, Nuclear Medicine and imaging, General Medicine, Cardiology and Cardiovascular Medicine
Published: 2019

25. Body weight-dependent Rubidium-82 activity results in constant image quality in myocardial perfusion imaging with PET

Author: J D, van Dijk, M, Dotinga, P L, Jager, C H, Slump, J P, Ottervanger, M, Mouden, and J A, van Dalen
Subjects: Male, Body Weight, Myocardial Perfusion Imaging, Reproducibility of Results, Coronary Artery Disease, Middle Aged, Body Mass Index, Clinical Protocols, Positron-Emission Tomography, Humans, Female, Rubidium Radioisotopes, Aged, Retrospective Studies
Abstract: Clinical practice shows degrading image quality in heavier patients who undergo myocardial perfusion imaging (MPI) with Rubidium-82 (Rb-82) PET when using a fixed tracer activity. Our aim was to derive and validate a patient-specific activity protocol resulting in a constant image quality in PET MPI.We included 251 patients who underwent rest MPI with Rb-82 PET (Discovery 670, GE Healthcare). 132 patients were included retrospectively and were scanned using a fixed activity of 740 MBq. The total number of measured prompts was normalized to activity and correlated to body weight, mass per body length and body mass index to find the best predicting parameter. Next, a patient-specific activity was derived and subsequently validated in 119 additional patients. Image quality was scored by three experts on a four-point scale.Both image quality and prompts decreased in heavier patients when using a fixed activity (p .005). Body weight was used to derive a new activity formula: Activity = 8.3 MBq/kg. When applying this formula, both measured prompts and scored image quality became independent of body weight (p .60).Administrating a Rb-82 activity that linearly depends on body weight resulted in a constant image quality across all patients and is recommended.
Published: 2019

26. No need for frame-wise attenuation correction in dynamic Rubidium-82 PET for myocardial blood flow quantification

Author: J. A. van Dalen, PL Jager, J. D. van Dijk, Jan Paul Ottervanger, and Cornelis H. Slump
Subjects: Male, Attenuation correction, UT-Hybrid-D, Iterative reconstruction, Coronary Artery Disease, 030204 cardiovascular system & hematology, Myocardial blood flow, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Coronary Circulation, Positron Emission Tomography Computed Tomography, Image Processing, Computer-Assisted, Medicine, Humans, Radiology, Nuclear Medicine and imaging, In patient, Organ Motion, Aged, Retrospective Studies, PET rubidium, medicine.diagnostic_test, business.industry, Myocardial Perfusion Imaging, Reproducibility of Results, Blood flow, Middle Aged, 22/4 OA procedure, Rubidium-82, Creep, Positron emission tomography, PET-CT registration, Female, Tomography, Cardiology and Cardiovascular Medicine, business, Correction for attenuation, Rubidium Radioisotopes, Biomedical engineering
Abstract: Background: Regadenoson-induced stress causes a repositioning of the heart, myocardial creep, in half of the patients undergoing Rubidium-82 (Rb-82) positron emission tomography (PET). As a result, misalignment of dynamic PET and computer tomography (CT) may occur, possibly affecting CT-based attenuation correction (AC) and thereby PET-based myocardial blood flow (MBF) quantification. Our aim was to determine the need for frame-wise PET-CT AC to obtain reliable MBF measurements. Methods: 31 Out of 64 consecutive patients had myocardial creep during regadenoson-induced stress Rb-82 PET-CT and were included. Prior to PET image reconstruction, we applied two AC methods; single PET-CT alignment and frame-wise alignment in which PET time-frames with myocardial creep were individually co-registered with CT. The PET-CT misalignment was then quantified and MBFs for the three vascular territories and whole myocardium were calculated and compared between both methods. Results: The magnitude of misalignment due to myocardial creep was 13.8 ± 4.5 mm in caudal-cranial direction, 1.8 ± 2.1 mm in medial-lateral and 2.5 ± 1.8 mm in anterior-posterior direction. Frame-wise PET-CT registration did not result in different MBF measurements (P ≥.07) and the magnitude of misalignment and MBF differences did not correlate (P ≥.58). Conclusion: There is no need for frame-wise AC in dynamic Rb-82 PET for MBF quantification. Single alignment seems sufficient in patients with myocardial creep.
Published: 2018

27. A practical approach for a patient-tailored dose protocol in coronary CT angiography using prospective ECG triggering

Author: PL Jager, Jan Paul Ottervanger, J. A. van Dalen, Cornelis H. Slump, Eline D. Huizing, Siert Knollema, and J. D. van Dijk
Subjects: Adult, Male, medicine.medical_specialty, Image quality, Cardiac-Gated Imaging Techniques, Cardiac imaging techniques, Coronary Artery Disease, 030204 cardiovascular system & hematology, Coronary Angiography, Radiation Dosage, Standard deviation, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, Computed X-ray tomography, Electrocardiography, 0302 clinical medicine, Predictive Value of Tests, Cardiac angiography, medicine, Image noise, Humans, Radiology, Nuclear Medicine and imaging, Cardiac imaging, Aged, Retrospective Studies, METIS-315533, Original Paper, medicine.diagnostic_test, Pixel, business.industry, Reproducibility of Results, Body size, Middle Aged, Radiation Exposure, EWI-26707, Coronary Vessels, Noise, Radiology Nuclear Medicine and imaging, IR-99215, Female, Radiology, Nuclear medicine, business, Cardiology and Cardiovascular Medicine, Artifacts, Tomography, X-Ray Computed
Abstract: To derive and validate a practical patient-specific dose protocol to obtain an image quality, expressed by the image noise, independent of patients’ size and a better radiation dose justification in coronary CT angiography (CCTA) using prospective ECG triggering. 43 patients underwent clinically indicated CCTA. The image noise, defined as the standard deviation of pixel attenuation values in a homogeneous region in the liver, was determined in all scans. Subsequently, this noise was normalized to the radiation exposure. Next, three patient-specific parameters, body weight, body mass index and mass per length (MPL), were tested for the best correlation with normalized image noise. From these data, a new dose protocol to provide a less variable image noise was derived and subsequently validated in 84 new patients. The normalized image noise increased for heavier patients for all patients’ specific parameters (p < 0.001). MPL correlated best with the normalized image noise and was selected for dose protocol optimization. This new protocol resulted in image noise levels independent of patients’ MPL (p = 0.28). A practical method to obtain CCTA images with noise levels independent of patients’ MPL was derived and validated. It results in a less variable image quality and better radiation exposure justification and can also be used for CT scanners from other vendors.
Published: 2015

28. Patient-specific tracer activity in MPI SPECT: A hands-on approach

Author: PL Jager, J. D. van Dijk, J. A. van Dalen, Siert Knollema, Jan Paul Ottervanger, and Cornelis H. Slump
Subjects: Adult, Male, Patient-Specific Modeling, Scanner, Image quality, Contrast Media, Coronary Artery Disease, 030204 cardiovascular system & hematology, Sensitivity and Specificity, Drug Administration Schedule, 030218 nuclear medicine & medical imaging, law.invention, Technologist Corner, 03 medical and health sciences, Myocardial perfusion imaging, 0302 clinical medicine, law, TRACER, medicine, Range (statistics), Humans, Radiology, Nuclear Medicine and imaging, Tomography, Emission-Computed, Single-Photon, medicine.diagnostic_test, METIS-315532, business.industry, Detector, Body Weight, Myocardial Perfusion Imaging, Reproducibility of Results, Collimator, EWI-26706, Image Enhancement, IR-99317, Radiology Nuclear Medicine and imaging, Radiopharmaceuticals, business, Nuclear medicine, Cardiology and Cardiovascular Medicine, Emission computed tomography
Abstract: Previously, several studies have reported that a decreasing image quality in heavier patients in myocardial perfusion imaging (MPI) using single-photon emission computed tomography (SPECT) can be compensated by using a body-weight-dependent tracer activity or scan time,1-3 as illustrated in Figure 1. Although we derived and validated a activity-scan-time formula for a conventional SPECT scanner, this formula cannot simply be used for all SPECT scanners.1 Differences in detector sensitivity, technical specifications such a collimator design and geometrical detector configuration, and acquisition and reconstruction settings limit the generalizability of the derived formula. Ideally, a tracer activity-scan-time formula should therefore be derived for each SPECT scanner using the method as described previously.1 However, this could be technically challenging and is time consuming. In this technical note, we therefore introduce, as a first-order approach, an alternative simplified method to obtain a body-weight-dependent protocol, which can easily be adopted in every day patient care. Figuer 1 Example of constant image quality in MPI SPECT scans of three male patients without any perfusion defects with varying body weights. From left to right: 66 kg (22.6 kg·m−2), 85 kg (25.1 kg·m−2 ... Deriving a Body-Weight-Dependent Protocol In cardiac SPECT, the application of a fixed tracer activity and scan-time protocol results in a decreasing number of photon counts in heavier patients due to increased photon attenuation, as demonstrated earlier1,3 and illustrated in Figure 2A, D. As image quality primarily depends on the number of measured photon counts, a constant number of detected photon counts provides an image quality less dependent on patients’ size.1,3 Figure 2 Schematic overview of the transition from a fixed tracer activity and scan-time product (A×T) to a minimized patient-specific A×T. From left to right: a fixed A×T (A) resulting in a decreasing number of photon counts and image ... A patient-specific protocol will allow obtaining a constant number of detected photons independent of patients’ size.1,3 A method to derive such a protocol is described recently.1 Ideally, the derivation and validation of a patient-specific protocol are performed for each SPECT scanner to account for differences in hardware, software, and acquisition and reconstruction settings. However, to limit the burden of using this extended method, we hereby introduce an alternative, simplified approach, which can easily be adopted in every day patient care. In this approach, we assume that local physicians consider their SPECT image quality of patients with average body weight, AVGweight, to be adequate, using the local tracer activity and scan-time combination. To convert this to other patients, a multiplication factor (MF) can be determined using MF=0.13AVGweight0.64×bodyweight(kg)+1-0.13×AVGweight0.36. 1a This formula is derived from the validated tracer activity and scan-time formula as presented in our recent study by normalizing it to an average patient.1 In a patient population with an average body weight of 80 kg, the MF formula can be described by MF = body weight (kg) × 0.0079 + 0.37 1b In the next step, the body-weight-specific tracer activity or scan time can be calculated using Patient-specific tracer activity (using a fixed scan time) = standard activity × MF 2a Patient-specific scan time (using a fixed tracer activity) = standard scan time × MF 2b As can be seen, MF is 1.0 for a patient of 80 kg when applying Eq. 1b. In that case, the patient-specific tracer activity (or scan time) is the same as the standard administered activity (or scan time). For heavier patients MF is higher than 1, and for less heavy patients it is lower than 1. Table 1 shows an example with the outcome of these equations in practice. The suggested MF is only eligible for conventional SPECT cameras1 and patients weighing between 60 and 130 kg, as weights outside this range were not used in deriving the formula.1 One could worry that the application of a patient-specific tracer activity or scan-time protocol deviates from the current guidelines.4,5 However, these guidelines are relatively old and partly outdated due to technological advances and revised insights. Motivated deviation can therefore be justified. Table 1 Multiplication factors to adjust the tracer dose or scan time per projection angle as a function of patient’s weight, using Eq. 1b. Furthermore, two examples for introducing either a patient-specific tracer activity or scan-time protocol ... Beneficial Effect of Patient-Specific Tracer Activities Introducing a body-weight-dependent protocol will not only result in image quality that depends less on patients’ size, it also allows for a reduction in the administered activity and, hence, radiation dose to the patient, as shown in a previous study6 and illustrated in Figure 2C, F. Nowadays, leaner patients are generally administered a higher activity than clinically necessary. In heavier patients, the currently applied fixed tracer activity is generally low or at best just sufficient. Implementing a patient-specific protocol will therefore result in a better image quality independent of patients’ size. It might even allow an overall tracer activity or scan-time reduction, without compromising diagnostic accuracy.
Published: 2015

29. Minimal rest activity for SPECT myocardial perfusion imaging in a one-day stress-first protocol

Author: JD Van Dijk, Mohamed Mouden, Siert Knollema, PL Jager, J. A. van Dalen, and Jan Paul Ottervanger
Subjects: Male, Activity ratios, Visual interpretation, Rest, Imaging phantom, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, Myocardial perfusion imaging, 0302 clinical medicine, medicine, Image Processing, Computer-Assisted, Humans, Radiology, Nuclear Medicine and imaging, Prospective Studies, Radionuclide Imaging, Aged, Tomography, Emission-Computed, Single-Photon, medicine.diagnostic_test, business.industry, Phantoms, Imaging, Myocardium, Spect mpi, Myocardial Perfusion Imaging, Heart, General Medicine, Middle Aged, Rest activity, Radiation exposure, Zinc, 030220 oncology & carcinogenesis, Exercise Test, Female, Summed difference score, Tellurium, Nuclear medicine, business, Algorithms, Cadmium
Abstract: Guidelines propose different rest–stress activity ratios (RSAR) for one-day stress-first SPECT myocardial perfusion imaging (MPI), but evidence is limited. Our aim was to determine and validate the minimal RSAR resulting in the same diagnostic outcome in one-day stress-first SPECT MPI. Forty-seven patients referred for rest after stress CZT-SPECT/CT MPI were prospectively included. Rest acquisitions were performed 3 h after stress. In addition to the stress and rest acquisitions, the first 22 patients underwent an additional acquisition prior to the rest injection to determine the remaining stress activity. Next, we simulated six RSARs varying from 1.0 to 3.5 in both patients and a phantom and compared the images to those using the reference RSAR of 4.0. Differences in summed difference score (SDS) >2 or ischemic defect interpretation were considered to significantly influence diagnostic outcome. After deriving the minimal RSAR, it was validated in 25 additional patients by comparing it to a RSAR of 4.0. After 3 h only 26% of the stress activity was still present in the myocardium. SDS differences >2 were found in one (4%) patient using RSAR of 3.5, 2.5 and 2.0, in three (12%) using 1.5 and in five (20%) using SRAR of 1.0. These results were consistent with the phantom study showing SDS differences >2 for RSARs ≤1.5 and with the visual interpretation which showed an increased number of deviating scans for RSAR 1.0. Validating the RSAR of 2.0 resulted in a different SDS in one patient (SDS of 30 versus 11). Moreover, two scans were interpreted as ischemic instead of normal when using RSAR 2.0 and in two other scans the opposite was the case. A RSAR of 2.0 in one-day stress-first MPI SPECT seems sufficient to obtain accurate diagnostic outcomes and is therefore recommended to reduce radiation exposure.
Published: 2018

30. Impact of regadenoson-induced myocardial creep on dynamic Rubidium-82 PET myocardial blood flow quantification

Author: PL Jager, S. S. Koenders, J. D. van Dijk, Cornelis H. Slump, Jan Paul Ottervanger, and J. A. van Dalen
Subjects: Male, medicine.medical_specialty, Adenosine A2 Receptor Agonists, UT-Hybrid-D, Diagnostic accuracy, 030204 cardiovascular system & hematology, Myocardial creep, Regadenoson, Myocardial blood flow, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, Myocardial perfusion imaging, 0302 clinical medicine, Internal medicine, Coronary Circulation, medicine, Humans, Radiology, Nuclear Medicine and imaging, Organ Motion, Rb, Dynamic stress, Aged, Retrospective Studies, medicine.diagnostic_test, business.industry, Myocardial Perfusion Imaging, Heart, Blood flow, Middle Aged, PET myocardial perfusion imaging, Rubidium-82, Creep, Purines, Positron-Emission Tomography, Cardiology, Pyrazoles, Female, Cardiology and Cardiovascular Medicine, business, Rubidium Radioisotopes, medicine.drug
Abstract: Background: Repositioning of the heart during myocardial perfusion imaging (MPI) using Rubidium-82 (Rb-82) PET may occur when using regadenoson. Our aim was to determine the prevalence and the effect of correcting for this myocardial creep on myocardial blood flow (MBF) quantification. Methods: We retrospectively included 119 consecutive patients who underwent dynamic rest- and regadenoson-induced stress MPI using Rb-82 PET. The presence of myocardial creep was visually assessed in the dynamic stress PET series by identifying differences between the automatically drawn myocardium contour and the activity. Uncorrected and corrected stress MBFs were compared for the three vascular territories (LAD, LCX, and RCA) and for the whole myocardium. Results: Myocardial creep was observed in 52% of the patients during stress. Mean MBF values decreased after correction in the RCA from 4.0 to 2.7 mL/min/g (P < 0.001), in the whole myocardium from 2.7 to 2.6 mL/min/g (P = 0.01), and increased in the LAD from 2.5 to 2.6 mL/min/g (P = 0.03) and remained comparable in the LCX (P = 0.3). Conclusions: Myocardial creep is a frequent phenomenon when performing regadenoson-induced stress Rb-82 PET and has a significant impact on MBF values, especially in the RCA territory. As this may hamper diagnostic accuracy, myocardial creep correction seems necessary for reliable quantification.
Published: 2018

31. The next step in standardizing SPECT myocardial perfusion imaging

Author: PL Jager, J. A. van Dalen, and JD Van Dijk
Subjects: Myocardial perfusion imaging, medicine.medical_specialty, medicine.diagnostic_test, business.industry, MEDLINE, Medicine, Radiology, Nuclear Medicine and imaging, Radiology, Cardiology and Cardiovascular Medicine, business
Published: 2019

32. Development and validation of a patient-tailored dose regime in myocardial perfusion imaging using conventional SPECT

Author: J. D. van Dijk, P. L. Jager, J. P. Ottervanger, J. de Boer, A. H. J. Oostdijk, E. M. Engbers, C. H. Slump, S. Knollema, and J. A. van Dalen
Subjects: Male, Patient-Specific Modeling, medicine.medical_specialty, Image quality, Contrast Media, Coronary Artery Disease, Sensitivity and Specificity, Drug Administration Schedule, chemistry.chemical_compound, Myocardial perfusion imaging, Organophosphorus Compounds, Patient-Centered Care, Image Interpretation, Computer-Assisted, Humans, Medicine, Gamma Cameras, Radiology, Nuclear Medicine and imaging, Medical physics, Aged, Tomography, Emission-Computed, Single-Photon, medicine.diagnostic_test, business.industry, Body Weight, fungi, Myocardial Perfusion Imaging, Reproducibility of Results, food and beverages, Equipment Design, Organotechnetium Compounds, Image Enhancement, Cadmium zinc telluride, Equipment Failure Analysis, chemistry, Radiology Nuclear Medicine and imaging, Female, Radiopharmaceuticals, Cardiology and Cardiovascular Medicine, business, Nuclear medicine
Abstract: Background: The decreasing image quality in heavier patients can be compensated by administration of a patient-specific dose in myocardial perfusion imaging (MPI) using a cadmium zinc telluride-based SPECT camera. Our aim was to determine if the same can be achieved when using a conventional SPECT camera. Methods: 148 patients underwent SPECT stress MPI using a fixed Tc-99m tetrofosmin tracer dose. Measured photon counts were normalized to administered tracer dose and scan time and were correlated with body weight, body mass index, and mass per length to find the best predicting parameter. From these data, a protocol to provide constant image quality was derived, and subsequently validated in 125 new patients. Results: Body weight was found to be the best predicting parameter for image quality and was used to derive a new dose formula; Aadmin (MBq) = 223·body weight (kg)0.65/Tscan (min). The measured photon counts decreased in heavier patients when using a fixed dose (P < .01) but this was no longer observed after applying a body-weight-dependent protocol (P = .20). Conclusions: Application of a patient-specific protocol resulted in an image quality less depending on patient’s weight. The results are most likely independent of the type of SPECT camera used, and, hence, adoption of patient-specific dose and scan time protocols is recommended.
Published: 2015

33. [Is dementia preventable through intensive vascular care? The preDIVA trial]

Author: E P, Moll van Charante, E, Richard, L S, Eurelings, J W, van Dalen, S A, Ligthart, E F, van Bussel, M P, Hoevenaar-Blom, M, Vermeulen, and W A, van Gool
Abstract: To assess whether intensive vascular care in GP practices can prevent dementia in a population of community-dwelling older people.This pragmatic cluster-randomised open-label study (ISRCTN29711771) was conducted in persons aged 70-78 years who were registered with Dutch GP practices. The only exclusion criteria were a diagnosis of dementia and limited life expectancy. Practices were randomly assigned to an intervention arm or a control arm. Participants in the interventional arm underwent a cardiovascular check-up every 4 months for six years by a practice nurse. Primary outcomes were cumulative incidence of dementia and functional limitations. Main secondary outcomes were the incidence of cardiovascular disease and mortality.Between June 2006 and March 2009, 116 GP practices (3526 participants) were recruited and randomly assigned: 63 (1890 participants) to the intervention group and 53 (1636 participants) to the control group. Primary outcome data were obtained for 3454 (98%) participants; median follow-up was 6.7 years. In this period, dementia was diagnosed in 121/1853 (6.5%) participants in the intervention group and in 112/1601 (7.0%) participants in the control group. This difference was not significant (hazard ratio 0.92, 95% CI 0.71-1.19). No differences were found with regard to functional decline, incident cardiovascular disease and mortality.Long-term intensive vascular care for community-dwelling elderly patients, provided in a primary care setting, does not result in a reduced incidence of dementia, functional limitations or mortality. There is, however, possibly an effect in elderly patients with untreated or sub-optimally treated hypertension; this warrants further research.
Published: 2017

34. Development and validation of a patient-tailored dose regime in myocardial perfusion imaging using czt-spect

Author: J D, van Dijk, P L, Jager, M, Mouden, C H, Slump, J P, Ottervanger, J, de Boer, A H J, Oostdijk, and J A, van Dalen
Subjects: Male, Maximum Tolerated Dose, Radiation Dosage, Sensitivity and Specificity, Whole-Body Counting, Organophosphorus Compounds, Radiation Protection, Myocardial perfusion imaging (MPI), Image Interpretation, Computer-Assisted, Body Size, Humans, Radiology, Nuclear Medicine and imaging, Observer Variation, Tomography, Emission-Computed, Single-Photon, Myocardial Perfusion Imaging, Reproducibility of Results, Organotechnetium Compounds, Middle Aged, Activity, Zinc, Dose, SPECT, CdZnTe, Female, Patient Safety, Radiopharmaceuticals, Tellurium, Cardiology and Cardiovascular Medicine, Cadmium
Abstract: Background: Guidelines for SPECT myocardial perfusion imaging (MPI) traditionally recommend a fixed tracer dose. Yet, clinical practice shows degraded image quality in heavier patients. The aim was to optimize and validate the tracer dose and scan time to obtain a constant image quality less dependent on patients’ physical characteristics. Methods: 125 patients underwent Cadmium Zinc Telluride (CZT)-SPECT stress MPI using a fixed Tc-99m-tetrofosmin tracer dose. Image quality was scored by three physicians on a 4-point grading scale and related to the number of photon counts normalized to tracer dose and scan time. Counts were correlated with various patient-specific parameters dealing with patient size and weight to find the best predicting parameter. From these data, a formula to provide constant image quality was derived, and subsequently tested in 92 new patients. Results: Degradation in image quality and photon counts was observed for heavier patients for all patients’ specific parameters (P < .01). We found body weight to be the best-predicting parameter for image quality and derived a new dose formula. After applying this new body weight-depended tracer dose and scan time in a new group, image quality was found to be constant (P > .19) in all patients. Conclusions: Also in CZT SPECT image quality decreases with weight. The use of a tracer dose and scan time that depends linearly on patient’s body weight corrected for the varying image quality in CZT-SPECT MPI. This leads to better radiation exposure justification.
Published: 2014

35. Correction to: No need for frame-wise attenuation correction in dynamic Rubidium-82 PET for myocardial blood flow quantification

Author: PL Jager, J. A. van Dalen, Jan Paul Ottervanger, Cornelis H. Slump, and JD Van Dijk
Subjects: Rubidium-82, business.industry, Frame (networking), Medicine, Radiology, Nuclear Medicine and imaging, Blood flow, Cardiology and Cardiovascular Medicine, business, Correction for attenuation, Algorithm
Abstract: Due to the typesetter not carrying out the author’s corrections at proof stage, there are two errors in the published article: where “mL × min × g” appears, it should be “mL/min/g”. One error is in the Figure 3 caption, and one error is in the second sentence under the heading “MBF Quantification”. The original article has been corrected.
Published: 2019

36. Search for a Higgs boson decaying into two photons in e(+)e(-) interactions at root s=189 GeV

Author: M. Vivargent, D. Piccolo, Vladimir Andreev, R. Ramelli, C. C. Samuel Ting, D.W. Schmitz, P. de Jong, N. Shivarov, R. van Gulik, P. Extermann, Salvatore Mele, Christoph Schäfer, B. Z. Yang, H. Hofer, S. S. Gau, K. L. Tung, Peter Denes, Robert Clare, Lamberto Luminari, Paolo Bagnaia, W. G. Ma, Thomas Hebbeker, G. Ambrosi, M. Rescigno, A. Barczyk, M. Gataullin, T. Sztaricskai, Paul Lecoq, R. W. Kraemer, M. Napolitano, A. Oulianov, C. Palomares, P. Wienemann, Adrian Biland, Egidio Longo, V. Plyaskin, Pierre Lecomte, F. Pierella, Federico Cindolo, A. Stone, Georgi Sultanov, T. S. Dai, R. A. Khan, S. Pensotti, Valery Schegelsky, Antonino Zichichi, C. Dionisi, Nicola Cavallo, H. K. Park, D. Duchesneau, H. S. Chen, L. Servoli, R. Leiste, Christoph Paus, Dimitri Bourilkov, P. Spillantini, Pablo Garcia-Abia, Werner Lustermann, Charles Timmermans, M. Dierckxsens, S. C. Tonwar, H. Rykaczewski, Frank Filthaut, Giovanni Organtini, Alain Hervé, T. Paul, H. Wilkens, G. Castellini, M. Chemarin, A. Bay, Ren-Yuan Zhu, B. Petersen, Thomas Ferguson, A. Malinin, A. Bajo, Alexei Raspereza, M. T. Dova, G. S. Muanza, I. Vodopianov, E. Fiandrini, Igor Vorobiev, J. A. van Dalen, A. Engler, G. M. Chen, G. Forconi, M. Pohl, S. Vlachos, Z. F. Gong, Gyorgy Vesztergombi, Peter Raics, M. Capell, H. S. Fesefeldt, E. Pistolesi, Luca Malgeri, Carlo Civinini, G. Raven, L. Xia, Aaron Dominguez, Jean Fay, M. Aguilar-Benitez, O. Grimm, Felicitas Pauss, Herwig Schopper, M. Pedace, S. C. Blyth, Marco Meschini, J. Rodin, T. Niessen, S. Rosier-Lees, P. Le Coultre, M. Basile, An. Zalite, A. De Salvo, P. Bartalini, A. Krüger, J. G. Branson, Kajari Mazumdar, X. D. Cai, Alessandra Doria, A. Gurtu, S. Villa, P. Duinker, P. Levtchenko, Panos A Razis, Christopher George Tully, S. N. Ganguli, A. Degré, H. Postema, W. J. Burger, Michael Dittmar, M. N. Kienzle-Focacci, A. Seganti, Harvey B Newman, M. Musy, R. Barillère, Jozsef Toth, Claudio Luci, D. Pandoulas, F. C. Erné, Wolfgang Lohmann, H. Vogt, B. Bertucci, F. Anselmo, Nicanor Colino, A. Lebedev, D. Mangeol, D. Luckey, B. Musicar, Roberto Battiston, Gerjan Bobbink, B. Borgia, G. Schwering, A. Csilling, J. Ulbricht, Dong-Chul Son, C. Furetta, M. Lebeau, J.P. Martin, Simonetta Gentile, S. R. Hou, M. Wadhwa, A. Balandras, D. J. Schotanus, K. Freudenreich, B. Tellili, J. Berdugo, J. J. Blaising, Marco Pieri, J. Hirschfelder, Stefano Giagu, J. D. Swain, A. Hasan, Raffaello D'Alessandro, F. Cesaroni, A. Buijs, Leonardo Merola, E. J. Sanchez, Maurizio Biasini, Pierluigi Paolucci, Marta Felcini, Peter H. Fisher, A. Klimentov, L. Lugnier, W. Kittel, I. Clare, G. Cara Romeo, B. P. Roe, S. Reucroft, S. V. Baldew, D. O. Prokofiev, Francesco Becattini, L. Tauscher, X. L. Wang, S. Cucciarelli, M. Pauluzzi, G. Marian, Aleandro Nisati, F. Brochu, C. Maña, D. della Volpe, H. J. Lee, Marcella Diemoz, G. Landi, M. Fabre, Jasper Kirkby, M. A. Falagan, I. Vetlitsky, Giovanni Passaleva, Joseph Quartieri, E. Delmeire, U. K. Chaturvedi, T. Azemoon, M. Zöller, Mingming Yang, H. F. Chen, An.A. Vorobyov, A. Böhm, Simone Paoletti, Y. S. Lu, Riccardo Paramatti, A. Favara, D. Ren, Anna Katharina Kopp, Zheng Wang, H. J. Yang, R. Ofierzynski, P. G. Rancoita, Pàl Hidas, Zhenyu Zhang, A. J.M. Muijs, S. Bhattacharya, L. Baksay, F. Cotorobai, B. De La Cruz, A. Shvorob, R. Ranieri, S. Likhoded, A. Kunin, Marcos Cerrada, B. N. Jin, Manjit Kaur, G. Ruggiero, A. C. Weber, L. Z. Sun, O. Adriani, Z. Szillasi, Hafeez R Hoorani, S. Wynhoff, C-Q. Li, A. Rosca, V. K. Gupta, H. Nowak, G. Chiefari, D. Vicinanza, S. Shevchenko, J. H. Field, Imad Baptiste Laktineh, V. Koutsenko, Lucas Taylor, Francesca Cavallari, M. G. Alviggi, E. Valente, M. E. Sarakinos, F. Behner, Yu. Galaktionov, L. Bellucci, Z. A. Liu, A. Vorvolakos, F. DeNotaristefani, W. J. Metzger, B. Stoyanov, S. Schmidt-Kaerst, T. Angelescu, G. Mirabelli, W. Wallraff, J. Alcaraz, G. Y. Zhu, E. Shumilov, P. Déglon, P. Ladron de Guevara, G. Viertel, S. Banerjee, K. Lübelsmeyer, S. Saremi, J. Casaus, V. Shoutko, K. Sudhakar, Ya Han Hu, D. Haas, Manas Maity, Jeremy Mans, Tariq Aziz, Claudia Cecchi, M. von der Mey, P. Berges, Hans J. Vogel, A. Buffini, A. Mihul, J. B. Ye, G. Alemanni, J. K. Kim, F. L. Linde, C. G. Yang, J. Pothier, Yu. Zalite, M. Acciarri, Guo-Ming Chen, J. M. Le Goff, J. Yamamoto, N. Gheordanescu, W. T. Lin, S. Costantini, S. C. Yeh, J. A. Rubio, A. Chen, D. van Dierendonck, J. Salicio, Crisostomo Sciacca, B. Zimmermann, D. Kiss, Konrad Deiters, G. B. Mohanty, Alberto Aloisio, Ph. Lebrun, X. W. Tang, P. A. Piroué, M. W. Gruenewald, M. Chamizo, I. Josa-Mutuberria, M. Kräber, Dong-Hyun Kim, G. Zilizi, R. Berbeco, A. Arefiev, R. R. McNeil, G. Carlino, G. Holzner, K. Riles, F. Marzano, G. Coignet, W. Krenz, S. X. Wu, Inkyu Park, M. Steuer, M. A. Rahaman, D. Perret-Gallix, D. Prokofiev, Luisa Cifarelli, L. J. Gutay, U. Becker, I. Duran, F. J. Eppling, L. W. Jones, S. M. Ting, J.V. Allaby, S. Patricelli, D. Hatzifotiadou, Laszlo Boldizsar, L. Romero, S. Sarkar, M. Bourquin, G. J. Grenier, Joachim Mnich, P. Achard, H. Milcent, T. Moulik, A. M. Cartacci, A. C. König, D. P. Stickland, Y. H. Chang, Francesca Nessi-Tedaldi, J. D. Burger, T. Siedenburg, G. Rahal-Callot, N. Raja, D. Dufournaud, H. Suter, Ia Iashvili, Z. Z. Xu, C. H. Lin, V. Pojidaev, Y. Uchida, Minhong Wang, M. P. Sanders, B. L. Betev, Speranza Falciano, A. Straessner, Luca Lista, Sabine Riemann, H. Anderhub, Michele Guida, B. Smith, S. Braccini, R. de Asmundis, I. Fisk, H. El Mamouni, Oleg Fedin, Max Weber, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, Achard, Pablo, Ambrosi, Giovanni, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Pohl, Martin, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, L., Balandras, A., Baldew, S. V., Banerjee, S., Barczyk, A., Barillere, R., Bartalini, P., Basile, M., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Bhattacharya, S., Biasini, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brochu, F., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Cai, X. D., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A. M., Casaus, J., Castellini, G., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Cesaroni, F., Chamizo, M., Chang, Y. H., Chaturvedi, U. K., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., Civinini, C., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., Cotorobai, F., B. d., La, Csilling, A., Cucciarelli, S., Dai, T. S., Van, J. A., D'Alessandro, R., Asmundis, R. d., Deglon, P., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Delmeire, E., Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierckxsens, M., Dierendonck, D. v., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Duchesneau, D., Dufournaud, D., Duinker, P., Duran, I., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Extermann, P., Fabre, M., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gau, S. S., Gentile, S., Gheordanescu, N., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hasan, A., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Hirschfelder, J., Hofer, H., Holzner, G., Hoorani, H., Hou, S. R., Hu, Y., Iashvili, I., Jin, B. N., Jones, L. W., Jong, P. d., Josa Mutuberria, I., Khan, R. A., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, J. K., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopp, A., Koutsenko, V., Kraber, M., Kraemer, R. W., Krenz, W., Kruger, A., Kunin, A., P. L., De, Laktineh, I., Landi, G., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Levtchenko, P., Li, C., Likhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Lugnier, L., Luminari, L., Lustermann, W., W. G., Ma, Maity, M., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Marian, G., Martin, J. P., Marzano, F., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Moulik, T., Muanza, G. S., A. J. M., Musicar, B., Musy, M., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Ofierzynski, R., Organtini, G., Oulianov, A., Palomares, C., Pandoulas, D., Paoletti, S., Paolucci, P., Paramatti, R., Park, H. K., Park, I. H., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pieri, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Pothier, J., Prokofiev, D. O., Prokofiev, D., Quartieri, J., Rahal Callot, G., Rahaman, M. A., Raics, P., Raja, N., Ramelli, R., Rancoita, P. G., Ranieri, R., Raspereza, A., Raven, G., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, K., Rodin, J., Roe, B. P., Romero, L., Rosca, A., Rosier Lees, S., Rubio, J. A., Ruggiero, G., Rykaczewski, H., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M. P., Sarakinos, M. E., Schafer, C., Schegelsky, V., Schmidt Kaerst, S., Schmitz, D., Schopper, H., Schotanus, D. J., Schwering, G., Sciacca, Crisostomo, Seganti, A., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Smith, B., Spillantini, P., Steuer, M., Stickland, D. P., Stone, A., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Suter, H., Swain, J. D., Szillasi, Z., Sztaricskai, T., Tang, X. W., Tauscher, L., Taylor, L., Tellili, B., Timmermans, C., S. C. C., Ting, S. M., Tonwar, S. C., Toth, J., Tully, C., Tung, K. L., Uchida, Y., Ulbricht, J., Valente, E., Vesztergombi, G., Vetlitsky, I., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vodopianov, I., Vogel, H., Vogt, H., Vorobiev, I., Vorobyov, A. A., Vorvolakos, A., Wadhwa, M., Wallraff, W., Wang, M., Wang, X. L., Wang, Z. M., Weber, A., Weber, M., Wienemann, P., Wilkens, H., S. X., Wu, Wynhoff, S., Xia, L., Z. Z., Xu, Yamamoto, J., Yang, B. Z., Yang, C. G., Yang, H. J., Yang, M., J. B., Ye, Yeh, S. C., Zalite, A., Zalite, Y., Zhang, Z. P., Zhu, G. Y., Zhu, R. Y., Zichichi, A., Zilizi, G., Zimmermann, B., and Zoller, M.
Subjects: COLLISIONS, Z boson, Nuclear and High Energy Physics, Particle physics, Photon, Higgs boson, L3 data collected at LEP, Electron–positron annihilation, STANDARD MODEL, 2 PHOTONS, FOS: Physical sciences, ddc:500.2, 01 natural sciences, 7. Clean energy, Lower limit, High Energy Physics - Experiment, Standard Model, W-PAIR PRODUCTION, Nuclear physics, BHABHA SCATTERING, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, MONTE-CARLO PROGRAM, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], PARTICLES, TEVATRON, 010306 general physics, DETECTOR, Ciencias Exactas, L3 EXPERIMENT, Physics, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Física, Function (mathematics), Scalar boson, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: A search is performed for a Higgs boson produced in association with a Z boson and decaying into two photons, using the L3 data collected at LEP at a centre-of-mass energy of 189 GeV. All decay modes of the Z are considered. No signal is observed and limits on the branching fraction of the Higgs boson decay into two photons as a function of the Higgs mass are derived assuming a Standard Model production rate. A lower limit on the mass of a fermiophobic Higgs is set at 94.9 GeV at 95% confidence level., Facultad de Ciencias Exactas
Published: 2016

37. Search for the Standard Model Higgs boson in e(+)e(-) collisions at root s up to 202 GeV

Author: G. Forconi, M. Pohl, Yu. Galaktionov, R. Barillère, Jozsef Toth, Claudio Luci, Peter H. Fisher, A. Hervé, D. Pandoulas, J. Alcaraz, M. W. Gruenewald, I. Josa-Mutuberria, A. Bajo, P. G. Rancoita, B. N. Jin, H. Nowak, D. Vicinanza, Riccardo Paramatti, W. Wallraff, S. Banerjee, A. Kunin, M. Kräber, G. Grenier, Egidio Longo, G. Ruggiero, R. Berbeco, W. Kittel, T. Angelescu, Speranza Falciano, J. G. Branson, A. C. Weber, A. Straessner, Dimitri Bourilkov, S. Reucroft, D. Käfer, S. Villa, S. V. Baldew, D. O. Prokofiev, Luca Lista, Hafeez R Hoorani, J. Casaus, S. Sushkov, G. Schwering, Aleandro Nisati, P. Spillantini, S. N. Ganguli, A. Arefiev, J.V. Allaby, S. Patricelli, Francesca Cavallari, A. Mihul, G. Alemanni, Joseph Quartieri, R. R. McNeil, G. Carlino, M. Rescigno, L. Romero, A. Degré, A. Ewers, W. J. Metzger, Sabine Riemann, A. Lebedev, Dong-Chul Son, D. Hatzifotiadou, Laszlo Boldizsar, S. Sarkar, R. Leiste, S. C. Yeh, Christoph Paus, Jasper Kirkby, M. A. Falagan, C. Furetta, J. J. Blaising, B. Petersen, M. Zöller, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, M. Bourquin, F. Cesaroni, C. G. Yang, J. Pothier, Yu. Zalite, M. Fabre, K. Sudhakar, J. Hirschfelder, G. Holzner, Stefano Giagu, K. Riles, Anna Katharina Kopp, L. Lugnier, Mingming Yang, M. von der Mey, P. Achard, Y. Uchida, J. P. Martin, D. Haas, J. B. Ye, F. Cindolo, C. Rosenbleck, F. Marzano, G. Coignet, W. Krenz, Maria-Teresa Dova, Raffaello D'Alessandro, Minhong Wang, M. P. Sanders, T. Sztaricskai, B. L. Betev, G. Y. Zhu, E. Shumilov, G. Ambrosi, F. L. Linde, G. Mirabelli, J. K. Kim, I. Vetlitsky, Francesca Nessi-Tedaldi, G. Cara Romeo, B. P. Roe, Marco Pieri, B. Roux, A. Barczyk, V. Plyaskin, Leonardo Merola, V. Shoutko, J. D. Burger, T. Siedenburg, G. Rahal-Callot, A. De Salvo, P. Wienemann, J. Mnich, Georgi Sultanov, S. X. Wu, T. S. Dai, R. A. Khan, P. Bartalini, M. N. Kienzle-Focacci, Pierluigi Paolucci, N. Raja, Adrian Biland, Claudia Cecchi, A. Csilling, Alexei Raspereza, L. Tauscher, A. M. Cartacci, A. C. König, M. Kopal, Inkyu Park, An. Zalite, K. Lübelsmeyer, M. Steuer, H. Suter, Ia Iashvili, G. Marian, V. P. Andreev, R. Ramelli, C-Q. Li, V. K. Gupta, M. Lebeau, S. Pensotti, Valery Schegelsky, Antonino Zichichi, D. Prokofiev, Luisa Cifarelli, M. A. Rahaman, X. L. Wang, D. Perret-Gallix, M. Chemarin, Giovanni Passaleva, T. Azemoon, A. Favara, G. M. Chen, F. DeNotaristefani, H. Rykaczewski, Giovanni Organtini, Zheng Wang, I. Vodopianov, A. Engler, D. Dufournaud, M. Pauluzzi, H. Milcent, A. Buffini, Zhenyu Zhang, F. Brochu, D. della Volpe, L. Baksay, Aaron Dominguez, L. J. Gutay, H. Wilkens, M. Capell, U. Becker, Marcos Cerrada, Felicitas Pauss, F. C. Erné, A. Krüger, Z. Z. Xu, C. H. Lin, V. Pojidaev, H. S. Fesefeldt, E. Pistolesi, A. Rosca, T. Moulik, A. Seganti, Harvey B Newman, M. Musy, Roberto Battiston, D. Ren, Ya Han Hu, G. S. Muanza, S. Rosier-Lees, Z. A. Liu, P. Le Coultre, M. Basile, D. P. Stickland, Y. H. Chang, Manas Maity, A. Vorvolakos, Lamberto Luminari, R. van Gulik, P. Berges, P. Extermann, Z. Szillasi, Salvatore Mele, Christoph Schäfer, B. Z. Yang, P. Ladron de Guevara, F. J. Eppling, L. W. Jones, Gerjan Bobbink, B. Borgia, S. M. Ting, Jean Fay, D. Mangeol, J. A. van Dalen, S. Saremi, M. Vivargent, D. Piccolo, Maurizio Biasini, J. Ulbricht, Igor Vorobiev, V. Koutsenko, D.W. Schmitz, H. Hofer, P. de Jong, N. Shivarov, D. Luckey, Robert Clare, W. G. Ma, P. Levtchenko, Stefan Roth, Marta Felcini, Panos A Razis, P. Lebrun, Francesco Becattini, Thomas Hebbeker, K. Freudenreich, Paul Lecoq, R. W. Kraemer, B. Tellili, K. L. Tung, Nicola Cavallo, Pierre Lecomte, Jeremy Mans, H. J. Yang, J. M. Le Goff, J. Yamamoto, N. Gheordanescu, R. Ofierzynski, Werner Lustermann, Charles Timmermans, M. Dierckxsens, An.A. Vorobyov, M. Napolitano, H. F. Chen, S. Likhoded, I. Clare, A. Malinin, S. Wynhoff, J. A. Rubio, Simonetta Gentile, A. Balandras, N. Batalova, H. K. Park, M. Acciarri, J. Berdugo, G. Castellini, E. J. Sanchez, Guo-Ming Chen, D. Duchesneau, H. S. Chen, Peter Denes, Peter Raics, L. Servoli, Kajari Mazumdar, X. D. Cai, O. Adriani, Imad Baptiste Laktineh, A. Chen, Z. F. Gong, S. C. Blyth, Marco Meschini, A. Oulianov, C. Palomares, Lucas Taylor, D. van Dierendonck, G. Chiefari, J. Salicio, M. G. Alviggi, S. Cucciarelli, C. Maña, S. Shevchenko, Christopher George Tully, F. Behner, Wolfgang Lohmann, H. Vogt, B. Bertucci, A. Buijs, F. Anselmo, Nicanor Colino, E. Delmeire, F. Pierella, U. K. Chaturvedi, Y. S. Lu, S. C. Tonwar, Frank Filthaut, Alessandra Doria, Thomas Ferguson, A. Shvorob, R. Ranieri, J. H. Field, S. R. Hou, B. Stoyanov, S. Schmidt-Kaerst, M. Wadhwa, D. J. Schotanus, Ren-Yuan Zhu, M. Pedace, G. Landi, Simone Paoletti, A. Gurtu, T. Paul, A. J.M. Muijs, Manjit Kaur, A. Hasan, S. Vlachos, J. Rodin, T. Niessen, E. Valente, G. Viertel, Hans J. Vogel, W. T. Lin, S. Costantini, B. Musicar, H. J. Lee, Marcella Diemoz, P. Bagnaia, C. Dionisi, Pablo Garcia-Abia, A. Bay, B. De La Cruz, Carlo Civinini, G. Raven, L. Xia, D. Kiss, Tariq Aziz, D. Teyssier, M. Aguilar-Benitez, O. Grimm, F. Cotorobai, Herwig Schopper, Crisostomo Sciacca, P. Déglon, B. Zimmermann, Konrad Deiters, G. B. Mohanty, H. Postema, Alberto Aloisio, X. W. Tang, Pàl Hidas, P. A. Piroué, M. Chamizo, S. Bhattacharya, Samuel C.C. Ting, P. Duinker, H. El Mamouni, L. Z. Sun, A. Klimentov, Dong-Hyun Kim, G. Zilizi, L. Bellucci, S. S. Gau, M. Gataullin, A. Stone, Oleg Fedin, Max Weber, H. Anderhub, Michele Guida, B. Smith, S. Braccini, R. de Asmundis, I. Fisk, W. J. Burger, Michael Dittmar, J. D. Swain, A. Böhm, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, L., Balandras, A., Baldew, S. V., Banerjee, S., Barczyk, A., Barillere, R., Bartalini, P., Basile, M., Batalova, N., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Bhattacharya, S., Biasini, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brochu, F., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Cai, X. D., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A. M., Casaus, J., Castellini, G., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Cesaroni, F., Chamizo, M., Chang, Y. H., Chaturvedi, U. K., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., Civinini, C., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., Cotorobai, F., B. d., La, Csilling, A., Cucciarelli, S., Dai, T. S., Van, J. A., D'Allesandro, R., Asmundis, R. d., Deglon, P., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Delmeire, E., Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierckxsens, M., Dierendonck, D. v., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Duchesneau, D., Duforunaud, D., Duinker, P., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Ewers, A., Extermann, P., Fabre, M., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gau, S. S., Gentile, S., Gheordanescu, N., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hasan, A., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Iashvili, I., Jin, B. N., Jones, L. W., Jong, P. d., Josa Mutuberria, I., Khan, R. A., Kafer, D., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, J. K., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopal, M., Kopp, A., Koutsenko, V., Kraber, M., Kraemer, R. W., Krenz, W., Kruger, A., Kunin, A., P. L., De, Laktineh, I., Landi, G., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Levtchenko, P., Li, C., Likhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Lugnier, L., Luminari, L., Lustermann, W., W. G., Ma, Maity, M., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Marian, G., Martin, J. P., Marzano, F., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Moulik, T., Muanza, G. S., A. J. 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Y., Zichichi, A., Zilizi, G., Zimmermann, B., Zoller, M., Achard, Pablo, Ambrosi, Giovanni, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Malgeri, Luca, and Pohl, Martin
Subjects: Nuclear and High Energy Physics, Particle physics, ENERGIES, Electron–positron annihilation, FOS: Physical sciences, Cosmic ray, Elementary particle, ddc:500.2, Standard Model Higgs boson, Lower limit, High Energy Physics - Experiment, Standard Model, CROSS-SECTIONS, Nuclear physics, High Energy Physics - Experiment (hep-ex), MUON DETECTOR, cosmic rays, MONTE-CARLO PROGRAM, CALORIMETER, Ciencias Exactas, L3 EXPERIMENT, Physics, CONSTRUCTION, High Energy Physics::Phenomenology, Física, LEP, L3 detector, Higgs boson, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: The Standard Model Higgs boson is searched for in 233.2 pb−1 of data collected by the L3 detector at centre of mass energies from 192 GeV to 202 GeV. These data are consistent with the expectations of Standard Model processes and no evidence of a Higgs signal is observed. A lower limit on the mass of the Standard Model Higgs boson of 107.0 GeV is set at the 95% confidence level., Facultad de Ciencias Exactas
Published: 2016

38. Measurement of the W+W-gamma cross section and direct limits on anomalous quartic gauge boson couplings at LEP

Author: Yu. Galaktionov, F. Cesaroni, Peter H. Fisher, Egidio Longo, Lamberto Luminari, H. F. Chen, Riccardo Paramatti, A. Kunin, S. Pensotti, Valery Schegelsky, Antonino Zichichi, Hafeez R Hoorani, S. X. Wu, W. J. Metzger, E. Delmeire, H. Rykaczewski, J. Alcaraz, D. Haas, Giovanni Organtini, U. K. Chaturvedi, H. Wilkens, G. S. Muanza, Jean Fay, Maurizio Biasini, Marta Felcini, Y. S. Lu, Nicola Cavallo, H. K. Park, F. Pierella, M. Vivargent, D. Piccolo, Federico Cindolo, A. Buijs, Inkyu Park, H. El Mamouni, A. Shvorob, R. Ranieri, C. Dionisi, Francesco Becattini, Aleandro Nisati, Speranza Falciano, G. Castellini, A. Straessner, Pablo Garcia-Abia, Pierre Lecomte, G. Chiefari, S. Shevchenko, Joseph Quartieri, G. Forconi, H. Milcent, M. Pohl, Alain Hervé, A. Lebedev, Dong-Chul Son, M. Steuer, J. H. Field, L. Baksay, F. Cotorobai, P. G. Rancoita, T. Angelescu, Luca Lista, Z. F. Gong, S. C. Tonwar, Frank Filthaut, H. J. Yang, Werner Lustermann, Charles Timmermans, M. Dierckxsens, A. Malinin, B. Stoyanov, G. Ruggiero, B. N. Jin, H. Nowak, Roberto Battiston, Jozsef Toth, Claudio Luci, D. Pandoulas, J. J. Blaising, J. Hirschfelder, T. Moulik, Stefano Giagu, A. C. Weber, S. Schmidt-Kaerst, J. Casaus, A. Bay, A. Mihul, Carlo Civinini, G. Raven, L. Xia, G. Alemanni, R. Ofierzynski, D. Vicinanza, D. Prokofiev, S. Likhoded, F. Behner, Oleg Fedin, Gerjan Bobbink, Luisa Cifarelli, W. Kittel, Marco Pieri, Pierluigi Paolucci, C. C. Samuel Ting, M. A. Rahaman, D. Perret-Gallix, M. Aguilar-Benitez, Mariagrazia Alviggi, B. Borgia, D. P. Stickland, Y. H. Chang, J. Ulbricht, O. Grimm, Herwig Schopper, S. C. Yeh, S. Wynhoff, Jeremy Mans, Thomas Ferguson, Sabine Riemann, Alessandra Doria, G. Mirabelli, R. van Gulik, Igor Vorobiev, W. Wallraff, Max Weber, C. G. Yang, P. Extermann, Salvatore Mele, I. Vetlitsky, H. Postema, G. Ambrosi, L. Romero, S. Reucroft, B. Tellili, M. Acciarri, Guo-Ming Chen, R. Ramelli, Peter Raics, Vladimir Andreev, J. Pothier, Yu. Zalite, A. M. Cartacci, A. C. König, K. Lübelsmeyer, F. L. Linde, S. Banerjee, Christoph Schäfer, B. Z. Yang, H. Hofer, K. L. Tung, Dimitri Bourilkov, G. Marian, S. Sarkar, P. Levtchenko, Pàl Hidas, P. Wienemann, A. Barczyk, Georgi Sultanov, A. Chen, D. van Dierendonck, P. Spillantini, Kajari Mazumdar, I. Clare, S. Bhattacharya, Panos A Razis, X. D. Cai, T. Sztaricskai, M. Fabre, T. S. Dai, B. Zimmermann, Mingming Yang, R. A. Khan, An. Zalite, S. Patricelli, Raffaello D'Alessandro, J. Salicio, H. Anderhub, A. Buffini, Konrad Deiters, D.W. Schmitz, M. Bourquin, P. de Jong, N. Shivarov, B. Petersen, G. J. Grenier, M. W. Gruenewald, I. Josa-Mutuberria, M. Kräber, C-Q. Li, V. K. Gupta, S. R. Hou, M. Wadhwa, D. Dufournaud, Leonardo Merola, D. J. Schotanus, D. Hatzifotiadou, Ren-Yuan Zhu, E. Fiandrini, Giovanni Passaleva, Joachim Mnich, P. Achard, W. J. Burger, G. B. Mohanty, Alberto Aloisio, Ph. Lebrun, M. Pedace, Adrian Biland, Michael Dittmar, R. Berbeco, Gyorgy Vesztergombi, Luca Malgeri, L. Z. Sun, Z. A. Liu, A. Vorvolakos, F. DeNotaristefani, M. N. Kienzle-Focacci, J. Allaby, A. Csilling, Robert Clare, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, L. Tauscher, T. Azemoon, M. Lebeau, A. Gurtu, Laszlo Boldizsar, L. J. Gutay, Michele Guida, B. Smith, S. Braccini, J. D. Swain, Z. Z. Xu, C. H. Lin, R. Leiste, Christoph Paus, P. Violini, A. De Salvo, P. Bartalini, K. Sudhakar, Simonetta Gentile, A. Balandras, M. Chemarin, S. Saremi, Francesca Nessi-Tedaldi, A. Arefiev, V. Pojidaev, J. Berdugo, Ya Han Hu, E. J. Sanchez, M. Napolitano, U. Becker, R. de Asmundis, I. Fisk, Marcos Cerrada, A. Seganti, I. Duran, A. Oulianov, C. Palomares, Harvey B Newman, M. Musy, Manas Maity, P. Berges, M. von der Mey, R. R. McNeil, I. Vodopianov, A. Engler, J. M. Le Goff, J. Yamamoto, N. Gheordanescu, G. Carlino, X. W. Tang, P. A. Piroué, M. Chamizo, Peter Denes, J. A. Rubio, D. Kiss, Tariq Aziz, Paolo Bagnaia, F. J. Eppling, L. W. Jones, D. Duchesneau, H. S. Chen, An.A. Vorobyov, J. B. Ye, G. M. Chen, L. Servoli, Aaron Dominguez, A. Hasan, M. Capell, Felicitas Pauss, J. D. Burger, T. Siedenburg, L. Bellucci, S. M. Ting, A. Böhm, M. Rescigno, G. Rahal-Callot, N. Raja, X. L. Wang, M. Pauluzzi, G. Holzner, S. Rosier-Lees, H. S. Fesefeldt, E. Pistolesi, K. Riles, O. Adriani, S. C. Blyth, Marco Meschini, P. Le Coultre, M. Basile, H. Suter, Ia Iashvili, F. Marzano, G. Coignet, W. Krenz, Imad Baptiste Laktineh, Lucas Taylor, D. Ren, Crisostomo Sciacca, D. Mangeol, Y. Uchida, Francesca Cavallari, D. Luckey, J.P. Martin, G. Y. Zhu, E. Shumilov, Minhong Wang, M. P. Sanders, B. L. Betev, V. Shoutko, Christopher George Tully, Dong-Hyun Kim, Claudia Cecchi, J. A. van Dalen, G. Zilizi, Z. Szillasi, Wolfgang Lohmann, H. Vogt, B. Bertucci, V. Koutsenko, G. Landi, Simone Paoletti, B. Musicar, F. Anselmo, Nicanor Colino, A. J.M. Muijs, Manjit Kaur, G. Cara Romeo, B. P. Roe, F. Brochu, D. della Volpe, J. G. Branson, H. J. Lee, Marcella Diemoz, S. Villa, S. N. Ganguli, A. Degré, E. Valente, R. 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R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Moulik, T., Muanza, G. S., A. J. M., Musicar, B., Musy, M., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Ofierzynski, R., Organtini, G., Oulianov, A., Palomares, C., Pandoulas, D., Paoletti, S., Paolucci, P., Paramatti, R., Park, H. K., Park, I. H., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pieri, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Pothier, J., Prokofiev, D. O., Prokofiev, D., Quartieri, J., Rahal Callot, G., Rahaman, M. A., Raics, P., Raja, N., Ramelli, R., Rancoita, P. G., Ranieri, R., Raspereza, A., Raven, G., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, K., Rodin, J., Roe, B. P., Romero, L., Rosca, A., Rosier Lees, S., Rubio, J. A., Ruggiero, G., Rykaczewski, H., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M. P., Sarakinos, M. E., Schafer, C., Schegelsky, V., Schmidt Kaerst, S., Schmitz, D., Schopper, H., Schotanus, D. J., Schwering, G., Sciacca, Crisostomo, Seganti, A., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Smith, B., Spillantini, P., Steuer, M., Stickland, D. P., Stone, A., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Suter, H., Swain, J. D., Szillasi, Z., Sztaricskai, T., Tang, X. W., Tauscher, L., Taylor, L., Tellili, B., Timmermans, C., S. C. C., Ting, S. M., Tonwar, S. C., Toth, J., Tully, C., Tung, K. L., Uchida, Y., Ulbricht, J., Valente, E., Vesztergombi, G., Vetlitsky, I., Vicinanza, D., Viertel, G., Villa, S., Violini, P., Vivargent, M., Vlachos, S., Vodopianov, I., Vogel, H., Vogt, H., Vorobiev, I., Vorobyov, A. A., Vorvolakos, A., Wadhwa, M., Wallraff, W., Wang, M., Wang, X. L., Wang, Z. M., Weber, A., Weber, M., Wienemann, P., Wilkens, H., S. X., Wu, Wynhoff, S., Xia, L., Z. Z., Xu, Yamamoto, J., Yang, B. Z., Yang, C. G., Yang, H. J., Yang, M., J. B., Ye, Yeh, S. C., Zalite, A., Zalite, Y., Zhang, Z. P., Zhu, G. Y., Zhu, R. Y., Zichichi, A., Zilizi, G., Zimmermann, B., Zoller, M., Achard, Pablo, Ambrosi, Giovanni, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Pohl, Martin, and IHEF (IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Photon, PAIR PRODUCTION, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, ddc:500.2, 01 natural sciences, 7. Clean energy, Standard Model, High Energy Physics - Experiment, Nuclear physics, Cross section (physics), High Energy Physics - Experiment (hep-ex), MUON DETECTOR, Quartic function, 0103 physical sciences, MONTE-CARLO PROGRAM, CALORIMETER, 010306 general physics, Ciencias Exactas, L3 EXPERIMENT, Physics, Gauge boson, Luminosity (scattering theory), CONSTRUCTION, 010308 nuclear & particles physics, Física, LEP, COLLIDERS, L3 detector, SINGLE, MISSING ENERGY, High Energy Physics::Experiment
Abstract: The process eqeyaWqWyg is analysed using the data collected with the L3 detector at LEP at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.8 pby1 . Based on a sample of 42 selected WqWy candidates containing an isolated hard photon, the WqWyg cross section, defined within phase-space cuts, is measured to q y be: s WW s290"80"16 fb, consistent with the Standard Model expectation. Including the process e e anngg, limits g are derived on anomalous contributions to the Standard Model quartic vertices WqWygg and WqWyZg at 95% CL: y0.043 GeVy2-a rL2-0.043 GeVy2 , y0.08 GeVy2-a rL2-0.13 GeVy2 , y0.41 GeVy2-a rL2-0.37 GeVy2, Facultad de Ciencias Exactas
Published: 2016

39. QCD studies in e(+)e(-) annihilation from 30 GeV to 189 GeV

Author: M. Vivargent, D. Piccolo, Ren-Yuan Zhu, Luciano Barone, A. Barczyk, Adrian Biland, M. Pedace, C. Dionisi, Vladimir Andreev, S. C. Blyth, Marco Meschini, G. Landi, D. Ruschmeier, Christopher George Tully, Wolfgang Lohmann, H. Vogt, B. Bertucci, F. Anselmo, Simone Paoletti, Nicanor Colino, R. Leiste, Christoph Paus, S. X. Wu, A. Gurtu, P. G. Rancoita, Peter Denes, G. Viertel, Paolo Bagnaia, Pablo Garcia-Abia, F. Pierella, Federico Cindolo, S. C. Tonwar, Inkyu Park, A. Favara, H. Nowak, Frank Filthaut, Thomas Ferguson, Helmut Vogel, A. J.M. Muijs, M. N. Kienzle-Focacci, D. Vicinanza, Manjit Kaur, Alain Hervé, Lamberto Luminari, Peter H. Fisher, G. Forconi, Yu. Galaktionov, C-Q. Li, A. Hasan, V. K. Gupta, A. Csilling, Zheng Wang, Zhenyu Zhang, J. Alcaraz, Aleandro Nisati, W. Wallraff, Jozsef Toth, Claudio Luci, D. Pandoulas, Speranza Falciano, Peter Raics, A. Straessner, Luca Lista, S. Costantini, I. Vodopianov, A. Engler, M. Capell, R. Barillère, A. Rosca, M. E. Sarakinos, Joseph Quartieri, S. Banerjee, Kajari Mazumdar, M. Steuer, M. A. Rahaman, D. Perret-Gallix, Marco Pieri, H. S. Fesefeldt, E. Pistolesi, Pierre Lecomte, A. Buijs, H. El Mamouni, F. Di Lodovico, X. D. Cai, Jeremy Mans, A. Bay, Pierluigi Paolucci, Carlo Civinini, M. Rescigno, C. C. Samuel Ting, A. Arefiev, R. R. McNeil, G. Carlino, W. Kittel, F. DeNotaristefani, P. Marchesini, G. Marian, P. Ladron de Guevara, Werner Lustermann, Charles Timmermans, M. Dierckxsens, R. van Gulik, P. Extermann, Salvatore Mele, A. Malinin, Roberto Battiston, Tariq Aziz, Willis Lin, D. Prokofiev, M. Acciarri, Sabine Riemann, G. Raven, V. Brigljevic, Christoph Schäfer, B. Z. Yang, L. Xia, H. Hofer, Guo-Ming Chen, S. Reucroft, G. Ambrosi, K. L. Tung, Luisa Cifarelli, Gerjan Bobbink, B. Borgia, Giovanni Passaleva, P. Duinker, G. Ruggiero, A. Mihul, G. Alemanni, G. Holzner, B. N. Jin, J. Ulbricht, A. Chen, D. van Dierendonck, M. Aguilar-Benitez, O. Grimm, K. Riles, P. Wienemann, Georgi Sultanov, J. Salicio, T. S. Dai, A. C. Weber, Egidio Longo, R. A. Khan, A. M. Cartacci, Oleg Fedin, B. Tellili, F. Cesaroni, A. Lebedev, Ya Han Hu, J. K. Kim, Dong-Chul Son, M. Fabre, Mingming Yang, Manas Maity, Herwig Schopper, J. J. Blaising, J. Hirschfelder, Stefano Giagu, J.P. Martin, F. Marzano, G. Coignet, A. Klimentov, Max Weber, Crisostomo Sciacca, W. Krenz, P. Berges, G. Mirabelli, J.V. Allaby, S. Patricelli, I. Clare, H. Postema, Emilio Leonardi, S. V. Baldew, D. O. Prokofiev, E. Delmeire, U. K. Chaturvedi, M. Chemarin, K. Lübelsmeyer, D. Dufournaud, H. Anderhub, S. C. Yeh, D. Hatzifotiadou, D. Sciarrino, Y. S. Lu, G. M. Chen, Aaron Dominguez, Laszlo Boldizsar, K. Sudhakar, Riccardo Paramatti, Konrad Deiters, Nicola Cavallo, Z. Z. Xu, A. Shvorob, A. Oulianov, C. Palomares, C. H. Lin, Felicitas Pauss, G. B. Mohanty, A. Kunin, Alberto Aloisio, Michele Guida, B. Smith, H. K. Park, V. Pojidaev, Dong-Hyun Kim, L. Baksay, O. Adriani, F. Cotorobai, Jasper Kirkby, M. A. Falagan, M. von der Mey, J. H. Field, A. Bajo, S. Rosier-Lees, I. Vetlitsky, A. Buffini, J. B. Ye, Ph. Lebrun, R. Ramelli, G. Castellini, S. Braccini, Hafeez R Hoorani, G. Zilizi, Imad Baptiste Laktineh, Lucas Taylor, P. Le Coultre, M. Basile, B. Stoyanov, W. J. Burger, M. Zöller, U. Becker, D.W. Schmitz, Z. F. Gong, B. Musicar, T. Sztaricskai, M. G. Alviggi, M. W. Gruenewald, P. de Jong, N. Shivarov, S. Schmidt-Kaerst, G. Schwering, Michael Dittmar, Anna Katharina Kopp, S. S. Gau, X. W. Tang, I. Duran, M. Campanelli, R. de Asmundis, I. Fisk, T. Angelescu, L. J. Gutay, Y. Uchida, Robert Clare, D. Mangeol, Raffaello D'Alessandro, P. A. Piroué, W. J. Metzger, M. Chamizo, Kati Lassila-Perini, W. G. Ma, Thomas Hebbeker, V. Plyaskin, I. Josa-Mutuberria, M. Kräber, Z. A. Liu, A. Vorvolakos, C. Furetta, Paul Lecoq, R. W. Kraemer, D. Luckey, J. D. Swain, M. Napolitano, F. J. Eppling, L. W. Jones, M. Gataullin, J. Casaus, Minhong Wang, M. P. Sanders, J. A. van Dalen, L. Lugnier, D. Kiss, S. M. Ting, B. L. Betev, R. Berbeco, D. Haas, A. Stone, H. J. Lee, S. Saremi, D. Duchesneau, H. S. Chen, L. Servoli, Leonardo Merola, Alexei Raspereza, M. T. Dova, F. L. Linde, J. G. Branson, S. Villa, A. Böhm, An. Zalite, Marcella Diemoz, S. Pensotti, Valery Schegelsky, Antonino Zichichi, C. G. Yang, L. Tauscher, J. Pothier, Yu. Zalite, P. Molnar, J. M. Le Goff, J. Yamamoto, B. De La Cruz, H. Rykaczewski, T. Azemoon, Giovanni Organtini, N. Gheordanescu, S. N. Ganguli, A. Krüger, H. Wilkens, H. F. Chen, Maurizio Biasini, A. Degré, Marcos Cerrada, G. S. Muanza, J. A. Rubio, Axel König, P. Déglon, Marta Felcini, Jean Fay, Pàl Hidas, S. Bhattacharya, G. Chiefari, S. Shevchenko, L. Z. Sun, F. Behner, Francesco Becattini, L. Bellucci, Alessandra Doria, S. R. Hou, M. Wadhwa, D. J. Schotanus, H. J. Yang, S. Likhoded, S. Wynhoff, G. Cara Romeo, B. P. Roe, F. Brochu, D. della Volpe, H. Milcent, A. A. Vorobyov, M. Pohl, T. Moulik, Z. Szillasi, D. P. Stickland, Y. H. Chang, V. Koutsenko, Dimitri Bourilkov, L. Romero, P. Spillantini, S. Sarkar, B. Petersen, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, A. De Salvo, P. Bartalini, A. Seganti, Harvey B Newman, M. Musy, M. Bourquin, G. J. Grenier, Joachim Mnich, P. Achard, A. Robohm, Francesca Nessi-Tedaldi, J. D. Burger, T. Siedenburg, G. Rahal-Callot, N. Raja, H. Suter, Ia Iashvili, Francesca Cavallari, G. Y. Zhu, E. Shumilov, V. Shoutko, Claudia Cecchi, Igor Vorobiev, P. Levtchenko, Panos A Razis, Simonetta Gentile, A. Balandras, J. Berdugo, E. J. Sanchez, R. Faccini, X. L. Wang, M. Pauluzzi, D. Ren, F. C. Erné, K. Freudenreich, S. Cucciarelli, C. Maña, T. Paul, S. Vlachos, J. Rodin, T. Niessen, F. Ferroni, E. Valente, M. Lebeau, Achard, Pablo, Ambrosi, Giovanni, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Pohl, Martin, Sciarrino, Deborah, L3 (IHEF, IoP, FNWI), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., Baksay, L., Balandras, A., Baldew, S. V., Banerjee, S., Barczyk, A., Barillere, R., Barone, L., Bartalini, P., Basile, M., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Bhattacharya, S., Biasini, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brigljevic, V., Brochu, F., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Cai, X. D., Campanelli, M., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A. M., Casaus, J., Castellini, G., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Cesaroni, F., Chamizo, M., Chang, Y. H., Chaturvedi, U. K., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., Civinini, G., Clare, I., Clare, R., Coignet, G., Colino, N., Costantini, S., Cotorobai, F., B. d., La, Csilling, A., Cucciarelli, S., Dai, T. S., Van, J. A., D'Alessandro, R., Asmundis, R. d., Deglon, P., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Delmeire, E., Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierckxsens, M., Dierendonck, D. v., Lodovico, F. D., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Duchesneau, D., Dufournaud, D., Duinker, P., Duran, I., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Extermann, P., Fabre, M., Faccini, R., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Ferroni, F., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisk, I., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gau, S. S., Gentile, S., Gheordanescu, N., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hasan, A., Hazifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Hirschfelder, J., Hofer, H., Holzner, G., Hoorani, H., Hou, S. R., Hu, Y., Iashvili, I., Jin, B. N., Jones, L. W., Jong, P. d., Josa Mutuberria, I., Khan, R. A., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, J. K., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopp, A., Koutsenko, V., Kraber, M., Kraemer, R. W., Krenz, W., Kruger, A., Kunin, A., P. L., De, Laktineh, I., Landi, G., Lassila Perini, K., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Leonardi, E., Levtchenko, P., Li, C., Likhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Lugnier, L., Luminari, L., Lustermann, W., W. G., Ma, Maity, M., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Marchesini, P., Marian, G., Martin, J. P., Marzano, F., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Molnar, P., Moulik, T., Muanza, G. S., A. J. M., Musicar, B., Musy, M., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Organtini, G., Oulianov, A., Palomares, C., Pandoulas, D., Paoletti, S., Paolucci, P., Paramatti, R., Park, H. K., Park, I. H., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Perret Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pieri, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Pothier, J., Prokofiev, D. O., Prokofiev, D., Quartieri, J., Rahal Callot, G., Rahaman, M. A., Raics, P., Raja, N., Ramelli, R., Rancoita, P. G., Raspereza, A., Raven, G., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, K., Robohm, A., Rodin, J., Roe, B. P., Romero, L., Rosca, A., Rosier Lees, S., Rubio, J. A., Ruggiero, G., Ruschmeier, D., Rykaczewski, H., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M. P., Sarakinos, M. E., Schafer, C., Schegelsky, V., Schmidt Kaerst, S., Schmitz, D., Schopper, H., Schotanus, D. J., Schwering, G., Sciacca, Crisostomo, Sciarrino, D., Seganti, A., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Smith, B., Spillantini, P., Steuer, M., Stickland, D. P., Stone, A., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Suter, H., Swain, J. D., Szillasi, Z., Sztaricskai, T., Tang, X. W., Tauscher, L., Taylor, L., Tellili, B., Timmermans, C., S. C. C., Ting, S. M., Tonwar, S. C., Toth, J., Tully, C., Tung, K. L., Uchida, Y., Ulbricht, J., Valente, E., Vesztergombi, G., Vetlitsky, I., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vodopianov, I., Vogel, H., Vogt, H., Vorobiev, I., Vorobyov, A. A., Vorvolakos, A., Wadhwa, M., Wallraff, W., Wang, M., Wang, X. L., Wang, Z. M., Weber, A., Weber, M., Wienemann, P., Wilkens, H., S. X., Wu, Wynhoff, S., Xia, L., Z. Z., Xu, Yamamoto, J., Yang, B. Z., Yang, C. G., Yang, H. J., Yang, M., J. B., Ye, Yeh, S. C., Zalite, A., Zalite, Y., Zhang, Z. P., Zhu, G. Y., Zhu, R. Y., Zichichi, A., Zilizi, G., Zoller, M., and Flores, Sylvie
Subjects: Nuclear and High Energy Physics, Particle physics, E+E ANNIHILATION, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Electron–positron annihilation, Hadron, FOS: Physical sciences, ddc:500.2, EVENT SHAPE DISTRIBUTIONS, 01 natural sciences, 7. Clean energy, Power law, High Energy Physics - Experiment, CROSS-SECTIONS, Nuclear physics, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, POWER CORRECTIONS, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ANGLE BHABHA SCATTERING, 010306 general physics, Ciencias Exactas, Ansatz, L3 EXPERIMENT, Quantum chromodynamics, Coupling constant, Physics, Annihilation, HADRONIC EVENTS, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, LEPTON PAIR PRODUCTION, structure of hadronic events, centre-of-mass energies, L3 detector, l3 collaboration, High Energy Physics::Experiment, Energy (signal processing), Particle Physics - Experiment, TO-LEADING ORDER
Abstract: We present results obtained from a study of the structure of hadronic events recorded by the L3 detector at various centre-of-mass energies. The distributions of event shape variables and the energy dependence of their mean values are measured from 30 GeV to 189 GeV and compared with various QCD models. The energy dependence of the moments of event shape variables is used to test a power law ansatz for the non-perturbative component. We obtain a universal value of Ž 2 the non-perturbative parameter a s 0.537 ± 0.073. From a comparison with resummed O(αs2)QCD calculations, we 0 s determine the strong coupling constant at each of the selected energies. The measurements demonstrate the running of αs as expected in QCD with a value of αs(mZ) = 0.1215 ± 0.0012 (exp) ± 0.0061 (th)., Facultad de Ciencias Exactas
Published: 2016

40. Search for extra dimensions in boson and fermion pair production in e(+)e(-) interactions at LEP

Author: F. C. Erné, Yu. Galaktionov, C-Q. Li, J. Alcaraz, V. K. Gupta, H. Milcent, F. DeNotaristefani, K. Freudenreich, M. Rescigno, R. Barillère, A. Mihul, T. Moulik, Egidio Longo, G. Alemanni, H. Anderhub, S. Cucciarelli, C. Maña, S. C. Yeh, Manas Maity, P. Berges, A. Barczyk, Valery Schegelsky, H. Rykaczewski, Giovanni Organtini, S. C. Blyth, H. Wilkens, Jean Fay, S. X. Wu, Nicolas Produit, Helmut Vogel, T. Angelescu, J. A. van Dalen, Michele Guida, B. Smith, S. Braccini, Pàl Hidas, S. Bhattacharya, Adrian Biland, G. Landi, A. Buijs, Marco Meschini, Dimitri Bourilkov, M. Steuer, L. Z. Sun, J. Casaus, P. Laurikainen, D. O. Prokofiev, Alessandra Doria, F. Muheim, P. Spillantini, B. Petersen, D. P. Stickland, F. Ziegler, Y. H. Chang, P. Marchesini, Roberto Battiston, V. Brigljevic, Peter Raics, C. G. Yang, J. Pothier, Raffaello D'Alessandro, Yu. Zalite, Maurizio Biasini, Jasper Kirkby, M. A. Falagan, M. Zöller, R. de Asmundis, A. Oulianov, I. Fisk, M. Lebeau, M. A. Rahaman, D. Perret-Gallix, C. Palomares, Ren-Yuan Zhu, Luciano Barone, Gyorgy Vesztergombi, Luca Malgeri, G. Schwering, I. Vodopianov, Marta Felcini, Gerjan Bobbink, B. Borgia, B. N. Jin, J. Ulbricht, Christopher George Tully, Kajari Mazumdar, X. D. Cai, Leonardo Merola, Peter H. Fisher, Francesco Becattini, Anna Katharina Kopp, L. Bellucci, A. Engler, Francesca Cavallari, J. Busenitz, A. Arefiev, C. Dionisi, F. Cindolo, A. De Salvo, M. Capell, L. Tauscher, K. Sudhakar, L. Romero, R. R. McNeil, Wolfgang Lohmann, H. Vogt, B. Bertucci, T. Azemoon, M. Pedace, T. van Rhee, C. Furetta, Pablo Garcia-Abia, Alain Hervé, G. Carlino, M. Wadhwa, W. Kittel, Y. D. Oh, D. J. Schotanus, A. Bay, R. van Gulik, P. Bartalini, Aleandro Nisati, Kati Lassila-Perini, H. S. Fesefeldt, E. Pistolesi, S. C. Kim, Lamberto Luminari, M. von der Mey, S. Sarkar, I. Clare, F. Anselmo, Nicanor Colino, A. Gurtu, T. Paul, V. Plyaskin, J. P. Martin, P. Extermann, Salvatore Mele, L. Lugnier, Carlo Civinini, P. Lecomte, Riccardo Paramatti, Christoph Schäfer, B. Z. Yang, H. Hofer, G. Raven, H. J. Yang, L. Xia, J. B. Ye, A. Kunin, Joseph Quartieri, K. L. Tung, A. Seganti, Harvey B Newman, M. Musy, Hafeez R Hoorani, Marcos Cerrada, S. Pensotti, M. Bourquin, G. Holzner, W. J. Metzger, Vladimir Andreev, D. Ruschmeier, An.A. Vorobyov, M. Aguilar-Benitez, H. El Mamouni, D. Haas, M. T. Dova, F. L. Linde, O. Grimm, F. Di Lodovico, G. Y. Zhu, J. Tóth, E. Shumilov, Herwig Schopper, A. Hasan, Axel König, R. Leiste, K. Riles, Christoph Paus, R. C. Ball, Joachim Mnich, D. H. Kim, F. Marzano, G. Coignet, V. Shoutko, O. Adriani, Imad Baptiste Laktineh, Lucas Taylor, P. Achard, H. Postema, A. Favara, S. Wynhoff, A. Lebedev, Dong-Chul Son, P. Molnar, Simone Paoletti, Marco Pieri, M. Vivargent, D. Piccolo, Dong-Hyun Kim, H. F. Chen, A. J.M. Muijs, Aaron Dominguez, M. G. Alviggi, Manjit Kaur, Felicitas Pauss, W. Krenz, G. Zilizi, B. Monteleoni, Z. A. Liu, G. Forconi, A. Vorvolakos, A. Robohm, Zheng Wang, J. J. Blaising, J. Hirschfelder, Stefano Giagu, Pierluigi Paolucci, D. Kamrad, Werner Lustermann, Charles Timmermans, S. Rosier-Lees, A. Malinin, Zhenyu Zhang, U. K. Chaturvedi, P. Le Coultre, M. Basile, Y. S. Lu, S. Saremi, Samuel C.C. Ting, A. C. Weber, R. Ostonen, T. Sztaricskai, Oleg Fedin, A. Shvorob, Claudio Luci, Max Weber, G. Marian, G. Chiefari, S. Shevchenko, A. Rosca, Igor Vorobiev, Francesca Nessi-Tedaldi, Howard A. Stone, P. Levtchenko, M. Campanelli, A. Zichichi, J. H. Field, G. Passaleva, M. W. Gruenewald, I. Josa-Mutuberria, M. Kräber, D. Mangeol, J. K. Kim, F. Behner, Peter Denes, M. E. Sarakinos, R. Ramelli, D. Luckey, I. Vetlitsky, Panos A Razis, J. D. Burger, T. Siedenburg, B. Stoyanov, G. Rahal-Callot, N. Raja, J. M. Le Goff, N. Gheordanescu, D.W. Schmitz, G. Pascale, S. Schmidt-Kaerst, D. Pandoulas, An. Zalite, H. J. Lee, Marcella Diemoz, D. Kiss, Paolo Bagnaia, L. Cifarelli, P. de Jong, N. Shivarov, Robert Clare, G. Mirabelli, W. G. Ma, M. Fabre, K. Lübelsmeyer, P. Lebrun, P. Ladron de Guevara, G. Ambrosi, B. Cozzoni, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, J. A. Rubio, S. R. Hou, F. Pierella, M. Napolitano, P. Wienemann, Georgi Sultanov, H. Suter, Ia Iashvili, M. Acciarri, Guo-Ming Chen, T. S. Dai, R. A. Khan, F. Cesaroni, D. Duchesneau, H. S. Chen, L. Servoli, A. Buffini, G. Grenier, E. Valente, W. J. Burger, D. van Dierendonck, Mingming Yang, G.S. Muanza, Simonetta Gentile, A. Button, J. Salicio, Emilio Leonardi, Michael Dittmar, S. C. Tonwar, M. Chemarin, A. Balandras, Frank Filthaut, N. Cavallo, J. Berdugo, D. Sciarrino, G. M. Chen, Thomas Ferguson, J. D. Swain, D. Peach, S. Reucroft, E. Fiandrini, S. Costantini, E. J. Sanchez, L. Baksay, F. Cotorobai, A. Böhm, R. Faccini, X. L. Wang, G. G.G. Massaro, A. Chen, D. Ren, A. P. Colijn, P. Duinker, A. Klimentov, H. K. Park, G. Castellini, B. De La Cruz, P. Déglon, S. S. Gau, M. Gataullin, A. Stone, Z. F. Gong, M. N. Kienzle-Focacci, A. Csilling, D. Prokofiev, L. J. Gutay, U. Becker, I. Duran, F. J. Eppling, L. W. Jones, S. M. Ting, M. Pauluzzi, Despina Hatzifotiadou, J.V. Allaby, S. Patricelli, Laszlo Boldizsar, L. Fredj, J. G. Branson, S. Villa, S. N. Ganguli, Konrad Deiters, G. B. Mohanty, Alberto Aloisio, A. Degré, X. W. Tang, P. A. Piroué, G. Viertel, M. Chamizo, P. G. Rancoita, H. Nowak, D. Vicinanza, W. Wallraff, S. Banerjee, Tariq Aziz, Crisostomo Sciacca, Z. Szillasi, V. Koutsenko, G. Cara Romeo, B. P. Roe, C. Cecchi, F. Brochu, D. della Volpe, M. Pohl, A. M. Cartacci, D. Dufournaud, S. W. Banerjee, I. H. Park, Z. Z. Xu, C. H. Lin, S. Vlachos, V. Pojidaev, J. Rodin, T. Niessen, F. Ferroni, Y. Uchida, Minhong Wang, M. P. Sanders, B. L. Betev, Speranza Falciano, A. Straessner, Luca Lista, Willis Lin, Sabine Riemann, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, Acciarri, M., Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Ambrosi, B., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Baksay, L., Balandras, A., Ball, R. C., Banerjee, S., Barczyk, A., Barillere, R., Barone, L., Bartalini, P., Basile, M., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Bhattacharya, S., Biasini, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brigljevic, V., Brochu, F., Buffini, A., Buijs, A., Burger, J. D., Burger, W. J., Busenitz, J., Button, A., Cai, X. D., Campanelli, M., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A. M., Casaus, J., Castellini, G., Cavallari, F., Cavallo, N., Cecchi, G., Cerrada, M., Cesaroni, F., Chamizo, M., Chang, Y. H., Chaturvedi, U. K., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., Civinini, C., Clare, I., Clare, R., Coignet, G., Colijn, A. P., Colino, N., Costantini, S., Cotorobai, F., Cozzoni, B., B. d., La, Csilling, A., Cucciarelli, S., Dai, T. S., Van, J. A., D'Alessandro, R., Asmundis, R. d., Deglon, P., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierendonck, D. v., Lodovico, F. D., Dionisi, C., Dittmar, M., Dominguez, A., Doria, A., Dova, M. T., Duchesneau, D., Dufournaud, D., Duinker, P., Duran, I., Mamouni, H. E., Engler, A., Eppling, F. J., Erne, F. C., Extermann, P., Fabre, M., Faccini, R., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Ferroni, F., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisk, I., Forconi, G., Fredj, L., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gau, S. S., Gentile, S., Gheordanescu, N., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hasan, A., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hidas, P., Hirschfelder, J., Hofer, H., Holzner, G., Hoorani, H., Hou, S. R., Iashvili, I., Jin, B. N., Jones, L. W., Jong, P. d., Josa Mutuberria, I., Khan, R. A., Kamrad, D., Kaur, M., Kienzle Focacci, M. N., Kim, D., Kim, D. H., Kim, J. K., Kim, S. C., Kirkby, J., Kiss, D., Kittel, W., Klimentov, A., Konig, A. C., Kopp, A., Koutsenko, V., Kraber, M., Kraemer, R. W., Krenz, W., Kunin, A., P. L., De, Laktineh, I., Landi, G., Lassila Perini, K., Laurikainen, P., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Leonardi, E., Levtchenko, P., Li, C., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Lugnier, L., Luminari, L., Lustermann, W., W. G., Ma, Maity, M., Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Marchesini, P., Marian, G., Martin, J. P., Marzano, F., G. G. G., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Der, M. v., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Molnar, P., Monteleoni, B., Moulik, T., Muanza, G. S., Muheim, F., A. J. M., Musy, M., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Y. D., Oh, Organtini, G., Ostonen, R., Oulianov, A., Palomares, C., Pandoulas, D., Paoletti, S., Paolucci, P., Paramatti, R., Park, H. K., Park, I. H., Pascale, G., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Peach, D., Pedace, M., Pensotti, S., Perret Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Pieri, M., Piroue, P. A., Pistolesi, E., Plyaskin, V., Pohl, M., Pojidaev, V., Postema, H., Pothier, J., Produit, N., Prokofiev, D. O., Prokofiev, D., Quartieri, J., Rahal Callot, G., Rahaman, M. A., Raics, P., Raja, N., Ramelli, R., Rancoita, P. G., Raven, G., Razis, P., Ren, D., Rescigno, M., Reucroft, S., Rhee, T. v., Riemann, S., Riles, K., Robohm, A., Rodin, J., Roe, B. P., Romero, L., Rosca, A., Rosier Lees, S., Rubio, J. A., Ruschmeier, D., Rykaczewski, H., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M. P., Sarakinos, M. E., Schafer, C., Schegelsky, V., Schmidt Kaerst, S., Schmitz, D., Schopper, H., Schotanus, D. J., Schwering, G., Sciacca, Crisostomo, Sciarrino, D., Seganti, A., Servoli, L., Shevchenko, S., Shivarov, N., Shoutko, V., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Smith, B., Spillantini, P., Steuer, M., Stickland, D. P., Stone, A., Stone, H., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Suter, H., Swain, J. D., Szillasi, Z., Sztaricskai, T., Tang, X. W., Tauscher, L., Taylor, L., Timmermans, C., S. C. C., Ting, S. M., Tonwar, S. C., Toth, J., Tully, C., Tung, K. L., Uchida, Y., Ulbricht, J., Valente, E., Vesztergombi, G., Vetlitsky, I., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vodopianov, I., Vogel, H., Vogt, H., Vorobiev, I., Vorobyov, A. A., Vorvolakos, A., Wadhwa, M., Wallraff, W., Wang, M., Wang, X. L., Wang, Z. M., Weber, A., Weber, M., Wienemann, P., Wilkens, H., S. X., Wu, Wynhoff, S., Xia, L., Z. Z., Xu, Yang, B. Z., Yang, C. G., Yang, Z. P., Zhu, G. Y., Zhu, R. Y., Zichichi, A., Ziegler, F., Zilizi, G., and Zoller, M.
Subjects: Nuclear and High Energy Physics, Particle physics, E+E ANNIHILATION, ENERGIES, QED CORRECTIONS, FOS: Physical sciences, 01 natural sciences, Standard Model, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, REALISTIC APPROACH, Ciencias Exactas, Boson, L3 EXPERIMENT, Physics, electroweak interaction, 010308 nuclear & particles physics, Electroweak interaction, High Energy Physics::Phenomenology, Graviton, Física, z boson, large electron positron collider, Extra dimensions, Pair production, Large Electron–Positron Collider, High Energy Physics::Experiment, Electroweak scale, Particle Physics - Experiment
Abstract: Extra spatial dimensions are proposed by recent theories that postulate the scale of gravity to be of the same order as the electroweak scale. A sizeable interaction between gravitons and Standard Model particles is then predicted. Effects of these new interactions in boson and fermion pair production are searched for in the data sample collected at centre-of-mass energies above the Z pole by the L3 detector at LEP. In addition, the direct production of a graviton associated with a Z boson is investigated. No statistically significant hints for the existence of these effects are found and lower limits in excess of 1 TeV are derived on the scale of this new theory of gravity, Facultad de Ciencias Exactas
Published: 2016

41. Multi-modality nuclear medicine imaging: artefacts, pitfalls and recommendations

Author: Frans H.M. Corstens, Wouter V. Vogel, J. A. van Dalen, and Wim J.G. Oyen
Subjects: medicine.medical_specialty, PET/CT, Movement, pitfalls, Multi modality, Article, Nuclear medicine imaging, Neoplasms, medicine, Humans, Radiology, Nuclear Medicine and imaging, Medical physics, Tomography, Emission-Computed, Single-Photon, PET-CT, artefacts, Radiological and Ultrasound Technology, medicine.diagnostic_test, business.industry, Industrial computed tomography, General Medicine, Visualization, Multi-modality imaging, Oncology, Positron emission tomography, Positron-Emission Tomography, recommendations, Ct scanners, business, Artifacts, Tomography, X-Ray Computed, Preclinical imaging
Abstract: Multi-modality imaging is rapidly becoming an essential tool in oncology. Clinically, the best example of multimodality imaging is seen in the rapid evolution of hybrid positron emission tomography (PET)/computed tomography (CT) and single positron emission computed tomography (SPECT)/CT scanners. However, use of multi-modality imaging is prone to artefacts and pitfalls. Important artefacts that may lead to clinical misinterpretation result from the use of CT data to correct for attenuation and the existence of mismatches between the fused images, for example due to respiratory movement. Furthermore, for institutions who proceed from a standalone PET to a hybrid PET-CT, there is an issue of interchangeability between these systems, especially for quantitative studies. Another issue is visualisation: hospital PACS is not sufficiently capable of adequately viewing integrated images. This article reviews and illustrates the most common artefacts and pitfalls that can be encountered in multi-modality nuclear medicine imaging. For correct management of oncological patients it is essential to be able to detect and correctly interpret these artefacts and pitfalls. Therefore, solutions and recommendations to these problems are provided.
Published: 2007

42. Light-weight quadrotor with on-board absolute vision-aided navigation

Author: Daniel Magree, Eric N. Johnson, Gerald J. J. van Dalen, and Stephen Haviland
Subjects: Engineering, business.industry, ComputerApplications_COMPUTERSINOTHERSYSTEMS, Simultaneous localization and mapping, Sonar, Flight test, Visualization, Extended Kalman filter, Inertial measurement unit, Feature (computer vision), Computer vision, Artificial intelligence, Particle filter, business
Abstract: This paper presents a novel small unmanned aerial system which can operate independently and navigate using visual sensors. The basis of the system is a 600 gram quadrotor platform with sonar, inertial sensors and a camera. All processing is performed onboard the vehicle on a lightweight and powerful computer. Vehicle navigation is provided by a two part system. A Bierman Thornton extended Kalman filter (BTEKF) generates vehicle state and image feature estimates in a visual simultaneous localization and mapping (SLAM) formulation. Absolute position updates are provided to the BTEKF by a particle filter map-matching technique. Simulation and flight test results demonstrate the capabilities of the system to both navigate in an unknown environment with minimal drift while also showing the ability to eliminate drift when a priori known visual information is visible.
Published: 2015

43. Study of the e+e−→Zγ process at LEP and limits on triple neutral-gauge-boson couplings

Author: B. Zimmermann, Felicitas Pauss, S. Rosier-Lees, Konrad Deiters, P. Le Coultre, G. B. Mohanty, Alberto Aloisio, Samuel C.C. Ting, H. Anderhub, G. Ruggiero, M. Basile, Simonetta Gentile, A. Klimentov, Sándor Nagy, Michele Guida, A. Lebedev, Dong-Chul Son, S. Sushkov, Zhen Zhang, X. W. Tang, J. J. Blaising, J. Hirschfelder, Stefano Giagu, M. Pioppi, S. Braccini, M. Vivargent, D. Piccolo, P. A. Piroué, M. Chamizo, G. Mirabelli, L. J. Gutay, G. Cara Romeo, B. P. Roe, U. Becker, R. de Asmundis, I. Fisk, G. Chiefari, Roberto Battiston, Peter H. Fisher, Klaus Dehmelt, V. Veszpremi, S. Shevchenko, Aleandro Nisati, Georgi Sultanov, Joseph Quartieri, H. Vogt, G. Baksay, F. J. Eppling, L. W. Jones, Leonardo Merola, I. Vetlitsky, Ren-Yuan Zhu, F. Behner, F. Brochu, P. G. Rancoita, Gerjan Bobbink, B. Borgia, D. della Volpe, B. N. Jin, J. K. Kim, S. M. Ting, M. Pedace, M. Chemarin, F. Pierella, L. Tauscher, M. T. Dova, J. Ulbricht, Federico Cindolo, G. M. Chen, J. Mnich, H. Nowak, D. Vicinanza, A. Gurtu, Lamberto Luminari, A. Barczyk, C. Palomares, B. De La Cruz, M. Rescigno, H. El Mamouni, B. Tellili, T. Azemoon, R. Ramelli, Adrian Biland, P. Tarján, Dimitri Bourilkov, I. Clare, Marcos Cerrada, Marc Weber, P. Spillantini, P. de Jong, S. Banerjee, N. Shivarov, Claudio Luci, A. El Hage, G. Passaleva, Pierre Lecomte, P. Déglon, Speranza Falciano, Tariq Aziz, B. Petersen, S. C. Tonwar, E. Fiandrini, Gyorgy Vesztergombi, D. Teyssier, Pierluigi Paolucci, Frank Filthaut, Robert Clare, S. Costantini, Zheng Wang, Riccardo Paramatti, C. Souga, Werner Lustermann, Charles Timmermans, M. Dierckxsens, B. Echenard, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, J. A. van Dalen, A. De Salvo, Oleg Fedin, H. Milcent, Thomas Ferguson, Z. Szillasi, M. Napolitano, P. Bartalini, S. Bottai, Egidio Longo, J.V. Allaby, S. Patricelli, Yu. Galaktionov, I. Vodopianov, Alessandra Doria, Harvey B Newman, M. Musy, W. J. Burger, P. Lebrun, V. Koutsenko, A. Rosca, Michael Dittmar, D. Duchesneau, H. S. Chen, J. Alcaraz, Jeremy Mans, Jiawei Zhao, Crisostomo Sciacca, L. Servoli, A. Engler, S. Wynhoff, D. Hatzifotiadou, Laszlo Boldizsar, M. Capell, A. Kunin, P. Ladron de Guevara, An.A. Vorobyov, R. Leiste, I. Pal, H. S. Fesefeldt, E. Pistolesi, S. R. Hou, M. Wadhwa, D. J. Schotanus, M. Gataullin, K. Sudhakar, O. Adriani, Imad Baptiste Laktineh, A. Mihul, G. Alemanni, A. Bajo, Guo-Ming Chen, F. L. Linde, Vladimir Andreev, Lucas Taylor, M. G. Alviggi, R. Vasquez, J. G. Branson, A. Böhm, J. Casaus, S. C. Yeh, A. Chen, J. Salicio, S. N. Ganguli, R. van Gulik, C. Furetta, G. Forconi, M. Pohl, P. Extermann, Salvatore Mele, Christoph Schäfer, B. Z. Yang, H. Hofer, K. L. Tung, G. Landi, A. Degré, C. Rosenbleck, W. J. Metzger, C. G. Yang, J. Pothier, Yu. Zalite, Jozsef Toth, A. J.M. Muijs, Manjit Kaur, A. Eline, D. P. Stickland, Y. H. Chang, R. T. Van de Walle, G. Grenier, D. Haas, S. Reucroft, J. Debreczeni, L. Romero, S. Sarkar, M. Bourquin, E. Delmeire, P. Achard, Y. S. Lu, Francesca Nessi-Tedaldi, J. D. Burger, G. Rahal-Callot, N. Raja, Peter Denes, H. Suter, A. Shvorob, R. Ranieri, M. Levtchenko, E. Valente, Paolo Bagnaia, S. C. Blyth, S. Pensotti, Valery Schegelsky, Antonino Zichichi, J. H. Field, H. Rykaczewski, Giovanni Organtini, H. Wilkens, Marco Meschini, B. Stoyanov, G. S. Muanza, Jean Fay, Maurizio Biasini, Christopher George Tully, G. Viertel, Hans J. Vogel, Wolfgang Lohmann, B. Bertucci, Marta Felcini, W. T. Lin, F. Anselmo, Nicanor Colino, Hao-Ze Chen, B. Musicar, A. Favara, Francesco Becattini, Marcella Diemoz, L. Cifarelli, L. Baksay, V. Shoutko, N. Batalova, H. J. Yang, Peter Raics, R. Ofierzynski, Kajari Mazumdar, X. D. Cai, S. Likhoded, Marcus Hohlmann, V. Plyaskin, Alexander Malinin, T. Novak, M. Duda, K. Freudenreich, Z. A. Liu, Alexei Raspereza, M. W. Gruenewald, W. C. Fisher, Qiuwang Wang, A. Krüger, S. Saremi, Stefan Roth, S. Cucciarelli, L. Z. Sun, R. Barillère, C. Maña, An. Zalite, C-Q. Li, S. V. Baldew, D. O. Prokofiev, V. K. Gupta, J. M. Le Goff, J. Yamamoto, Christoph Rosemann, Jasper Kirkby, M. A. Falagan, M. Zöller, L. Bellucci, F. DeNotaristefani, T. Paul, Ya Han Hu, S. Natale, J. A. Rubio, C. Paus, M. Kopal, L. Malgeri, P. Berges, B. L. Betev, S. Vlachos, M. Steuer, M. A. Rahaman, D. Perret-Gallix, Luca Lista, C. Dionisi, Pablo Garcia-Abia, Alain Hervé, A. Bay, Sabine Riemann, L. Xia, M. Aguilar-Benitez, O. Grimm, Herwig Schopper, A. M. Cartacci, A. C. König, I. Josa-Mutuberria, M. Kräber, Z. Z. Xu, R. Berbeco, C. H. Lin, V. Pojidaev, Michela Biglietti, A. Arefiev, R. R. McNeil, G. Carlino, H. L. Zhuang, Arno Straessner, G. Holzner, K. Riles, F. Marzano, G. Coignet, S. Villa, Igor Vorobiev, P. Levtchenko, Panos A Razis, J. Berdugo, E. J. Sanchez, W. Kittel, X. L. Wang, M. Pauluzzi, D. Ren, Mingming Yang, Francesca Cavallari, John Swain, J. P. Martin, Alexander S. Sakharov, G. Y. Zhu, E. Shumilov, M. N. Kienzle-Focacci, Claudia Cecchi, M. Lebeau, Nicola Cavallo, and Z. F. Gong
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Gauge boson, Photon, 010308 nuclear & particles physics, Physics beyond the Standard Model, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, 01 natural sciences, 7. Clean energy, Standard Model, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Neutrino, 010306 general physics, Bhabha scattering
Abstract: The process e+e-→Zγ where the Z boson decays into hadrons or neutrinos, is studied with data collected with the L3 detector at LEP at centre-of-mass energies from 189 up to 209 GeV. The cross sections are measured and found to be in agreement with the Standard Model predictions. Limits on triple neutral-gauge-boson couplings, forbidden in the Standard Model at tree level, are derived. Limits on the energy scales at which the anomalous couplings could be manifest are set. They range from 0.3 to 2.3 TeV depending on the new physics effect under consideration. © 2004 Published by Elsevier B.V.
Published: 2004

44. Search for branons at LEP

Author: R. Barillère, Roberto Battiston, J. P. Martin, N. Batalova, S. V. Baldew, D. O. Prokofiev, Felicitas Pauss, S. Rosier-Lees, P. Tarján, Dimitri Bourilkov, H. El Mamouni, L. Romero, Alexander S. Sakharov, G. Y. Zhu, E. Shumilov, Jasper Kirkby, M. A. Falagan, M. T. Dova, J. Ulbricht, B. Tellili, P. Le Coultre, M. Basile, Marco Meschini, P. Spillantini, B. Petersen, E. Fiandrini, M. Rescigno, A. Barczyk, M. Zöller, M. Bourquin, G. Cara Romeo, I. Clare, Helmut Vogel, Gyorgy Vesztergombi, S. Villa, B. Echenard, Igor Vorobiev, P. Levtchenko, Panos A Razis, Ren-Yuan Zhu, Jose A. R. Cembranos, Riccardo Paramatti, E. J. Sanchez, B. L. Betev, X. L. Wang, G. Carlino, M. Pauluzzi, Oleg Fedin, Peter Raics, D. Ren, T. Azemoon, S. Sushkov, S. Bottai, A. De Salvo, W. J. Burger, P. Bartalini, Christopher George Tully, A. Kunin, S. Mele, M. Pedace, P. Achard, Luca Lista, Kajari Mazumdar, V. Plyaskin, Egidio Longo, A. Degré, X. D. Cai, Wolfgang Lohmann, A. Gurtu, C. Souga, Z. Wang, T. Aziz, Willis Lin, W. J. Metzger, T. Novak, J. G. Branson, C. G. Yang, J. Pothier, Yu. Zalite, Harvey B Newman, I. Vodopianov, A. Engler, Alexander Malinin, B. Bertucci, Marcus Hohlmann, M. N. Kienzle-Focacci, R. Leiste, Sabine Riemann, Peter H. Fisher, S. Wynhoff, M. Capell, Jiawei Zhao, Alexei Raspereza, H. Anderhub, D. Haas, B. Zimmermann, F. Cindolo, F. Anselmo, M. Biglietti, H. S. Fesefeldt, E. Pistolesi, J. A. van Dalen, V. Veszpremi, R. Vasquez, Zhenyu Zhang, M. Lebeau, F. Behner, B. Borgia, F. Pierella, M. Vivargent, M. Dittmar, Alexei Klimentov, Michele Guida, H. Milcent, A. Krüger, A. Cartacci, W. C. Fisher, G. B. Mohanty, Alberto Aloisio, B. P. Roe, S. Braccini, Aleandro Nisati, Z. Z. Xu, C. H. Lin, V. Pojidaev, A. Biland, Joseph Quartieri, J. Allaby, K. Sudhakar, S. C. Tonwar, C. Cecchi, A. Rosca, M. Duda, X. W. Tang, R. de Asmundis, E. Delmeire, I. Fisk, Y. S. Lu, W. Kittel, Matthias Weber, J. Casaus, A. Shvorob, M. Levtchenko, Frank Filthaut, Thomas Ferguson, C. Dionisi, Subir Sarkar, F. Cavallari, Pierluigi Paolucci, H. F. Chen, P. A. Piroué, S. C. Blyth, F. Brochu, An. Zalite, K. Freudenreich, M. Chamizo, A. Lebedev, Dong-Chul Son, Georgi Sultanov, C. Palomares, P. G. Rancoita, J. H. Field, B. N. Jin, C-Q. Li, V. K. Gupta, G. Forconi, M. Pohl, M. Cerrada, D. della Volpe, S. R. Hou, M. Wadhwa, D. J. Schotanus, B. Stoyanov, G. Baksay, M. Diemoz, J. D. Burger, P. Ladron de Guevara, C. A X Pattison, G. Passaleva, H. Nowak, D. Vicinanza, D. P. Stickland, P. Lebrun, N. Cavallo, Jeremy Mans, J. Hirschfelder, Stefano Giagu, G. J. Bobbink, S. Pensotti, Valery Schegelsky, Antonino Zichichi, Mingming Yang, L. Baksay, An.A. Vorobyov, F. DeNotaristefani, I. Josa-Mutuberria, M. Kräber, Vladimir Andreev, Y. H. Chang, M. Chemarin, Z. A. Liu, G. Chiefari, G. Mirabelli, G. M. Chen, S. Cucciarelli, C. Maña, Jozsef Toth, H. Rykaczewski, Giovanni Organtini, Mariagrazia Alviggi, O. Adriani, Guo-Ming Chen, F. L. Linde, M. W. Gruenewald, A. Doria, M. Musy, S. Banerjee, G. Grenier, Imad Baptiste Laktineh, Lucas Taylor, J. K. Kim, G. Coignet, Francesca Nessi-Tedaldi, Klaus Dehmelt, G. Ruggiero, Qiuwang Wang, S. Saremi, J. Salicio, Stefan Roth, H. Wilkens, I. Vetlitsky, Ya Han Hu, J. Mnich, G. Rahal-Callot, D. Teyssier, S. Reucroft, R. Berbeco, S. Shevchenko, N. Raja, G. S. Muanza, J. Debreczeni, Jean Fay, J. M. Le Goff, J. Yamamoto, Christoph Rosemann, P. Extermann, Christoph Schäfer, B. Z. Yang, H. Hofer, A. El Hage, K. L. Tung, P. Berges, H. Suter, A. Bajo, K. Deiters, J. A. Rubio, Crisostomo Sciacca, M. Biasini, Z. Szillasi, A. Arefiev, N. Colino, Lamberto Luminari, Z. F. Gong, P. Bagnaia, Marta Felcini, R. R. McNeil, C. Furetta, V. Koutsenko, V. Shoutko, Peter Denes, M. Gataullin, H. L. Zhuang, C. Rosenbleck, Francesco Becattini, Arno Straessner, J. Berdugo, Pierre Lecomte, Werner Lustermann, Charles Timmermans, M. Dierckxsens, G. Holzner, H. J. Yang, T. Paul, R. Ofierzynski, K. Riles, S. Likhoded, S. Natale, S. Vlachos, F. Marzano, L. Boldizsar, Samuel C.C. Ting, Simonetta Gentile, Davide Piccolo, M. Kopal, S. N. Ganguli, A. Chen, S. Nagy, M. Steuer, M. A. Rahaman, D. Perret-Gallix, R. Ranieri, B. De La Cruz, P. Déglon, Speranza Falciano, J. J. Blaising, G. Landi, A. J.M. Muijs, Manjit Kaur, A. Böhm, I. Pal, R. T. Van de Walle, R. Ramelli, P. de Jong, N. Shivarov, Claudio Luci, Robert Clare, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, B. Musicar, D. Duchesneau, H. S. Chen, L. Servoli, Leonardo Merola, A. Favara, L. Tauscher, L. Cifarelli, Axel König, Yu. Galaktionov, J. Alcaraz, E. Valente, A. Mihul, G. Alemanni, S. C. Yeh, G. Viertel, L. Z. Sun, S. Patricelli, D. Hatzifotiadou, L. Bellucci, Pablo Garcia-Abia, Alain Hervé, A. Bay, L. Xia, M. Aguilar-Benitez, O. Grimm, A. Eline, Herwig Schopper, M. Pioppi, C. Paus, L. J. Gutay, L. Malgeri, U. Becker, H. Vogt, F. J. Eppling, L. W. Jones, S. Costantini, S. M. Ting, John Swain, IHEF (IoP, FNWI), L3 (IHEF, IoP, FNWI), P., Achard, Aloisio, Alberto, Alviggi, Mariagrazia, Chiefari, Giovanni, DELLA VOLPE, Domenico, Merola, Leonardo, Napolitano, Marco, Patricelli, Sergio, Sciacca, Crisostomo, Lista, Luca, Achard, Pablo, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Echenard, Bertrand, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Malgeri, Luca, Natale, Sonia, Pohl, Martin, Straessner, Arno, P. ACHARD, O. ADRIANI, M. AGUILAR-BENITEZ, J. ALCARAZ, G. ALEMANNI, J. ALLABY, A. ALOISIO, M.G. ALVIGGI, H. ANDERHUB, V.P. ANDREEV, F. ANSELMO, A. AREFIEV, T. AZEMOON, T. AZIZ, P. BAGNAIA, A. BAJO, G. BAKSAY, L. BAKSAY, S.V. BALDEW, S. BANERJEE, SW. BANERJEE, A. BARCZYK, R. BARILLÈRE, P. BARTALINI, M. BASILE, N. BATALOVA, R. BATTISTON, A. BAY, F. BECATTINI, U. BECKER, F. BEHNER, L. BELLUCCI, R. BERBECO, J. BERDUGO, P. BERGES, B. BERTUCCI, B.L. BETEV, M. BIASINI, M. BIGLIETTI, A. BILAND, J.J. BLAISING, S.C. BLYTH, G.J. BOBBINK, A. BÖHM, L. BOLDIZSAR, B. BORGIA, S. BOTTAI, D. BOURILKOV, M. BOURQUIN, S. BRACCINI, J.G. BRANSON, F. BROCHU, J.D. BURGER, W.J. BURGER, X.D. CAI, M. CAPELL, G. CARA ROMEO, G. CARLINO, A. CARTACCI, J. CASAUS, F. CAVALLARI, N. CAVALLO, C. CECCHI, M. CERRADA, M. CHAMIZO, Y.H. CHANG, M. CHEMARIN, A. CHEN, G. CHEN, G.M. CHEN, H.F. CHEN, H.S. CHEN, G. CHIEFARI, L. CIFARELLI, F. CINDOLO, I. CLARE, R. CLARE, G. COIGNET, N. COLINO, S. COSTANTINI, B. DE LA CRUZ, S. CUCCIARELLI, J.A. VAN DALEN, R. DE ASMUNDIS, P. DÉGLON, J. DEBRECZENI, A. DEGRÉ, K. DEHMELT, K. DEITERS, D. DELLA VOLPE, E. DELMEIRE, P. DENES, F. DE NOTARISTEFANI, A. DE SALVO, M. DIEMOZ, M. DIERCKXSENS, C. DIONISI, M. DITTMAR, A. DORIA, M.T. DOVA, D. DUCHESNEAU, M. DUDA, B. ECHENARD, A. ELINE, A. EL HAGE, H. EL MAMOUNI, A. ENGLER, F.J. EPPLING, P. EXTERMANN, M.A. FALAGAN, S. FALCIANO, A. FAVARA, J. FAY, O. FEDIN, M. FELCINI, T. FERGUSON, H. FESEFELDT, E. FIANDRINI, J.H. FIELD, F. FILTHAUT, P.H. FISHER, W. FISHER, I. FISK, G. FORCONI, K. FREUDENREICH, C. FURETTA, YU. GALAKTIONOV, S.N. GANGULI, P. GARCIA-ABIA, M. GATAULLIN, S. GENTILE, S. GIAGU, Z.F. GONG, G. GRENIER, O. GRIMM, M.W. GRUENEWALD, M. GUIDA, V.K. GUPTA, A. GURTU, L.J. GUTAY, D. HAAS, D. HATZIFOTIADOU, T. HEBBEKER, A. HERVÉ, J. HIRSCHFELDER, H. HOFER, M. HOHLMANN, G. HOLZNER, S.R. HOU, Y. HU, B.N. JIN, L.W. JONES, P. DE JONG, I. JOSA-MUTUBERRÍA, M. KAUR, M.N. KIENZLE-FOCACCI, J.K. KIM, J. KIRKBY, W. KITTEL, A. KLIMENTOV, A.C. KOENIG, M. KOPAL, V. KOUTSENKO, M. KRAEBER, R.W. KRAEMER, A. KRUEGER, A. KUNIN, P. LADRON DE GUEVARA, I. LAKTINEH, G. LANDI, M. LEBEAU, A. LEBEDEV, P. LEBRUN, P. LECOMTE, P. LECOQ, P. LE COULTRE, J.M. LE GOFF, R. LEISTE, M. LEVTCHENKO, P. LEVTCHENKO, C. LI, S. LIKHODED, C.H. LIN, W.T. LIN, F.L. LINDE, L. LISTA, Z.A. LIU, W. LOHMANN, E. LONGO, Y.S. LU, C. LUCI, L. LUMINARI, W. LUSTERMANN, W.G. MA, L. MALGERI, A. MALININ, C. MANA, D. MANGEOL, J. MANS, J.P. MARTIN, F. MARZANO, K. MAZUMDAR, R.R. MCNEIL, S. MELE, L. MEROLA, M. MESCHINI, W.J. METZGER, A. MIHUL, H. MILCENT, G. MIRABELLI, J. MNICH, G.B. MOHANTY, G.S. MUANZA, A.J.M. MUIJS, B. MUSICAR, M. MUSY, S. NAGY, S. NATALE, M. NAPOLITANO, F. NESSI-TEDALDI, H. NEWMAN, A. NISATI, T. NOVAK, H. NOWAK, R. OFIERZYNSKI, G. ORGANTINI, I. PAL, C. PALOMARES, P.PAOLUCCI, R. PARAMATTI, G. PASSALEVA, S. PATRICELLI, T. PAUL, M. PAULUZZI, C. PAUS, F. PAUSS, M. PEDACE, S. PENSOTTI, D. PERRET-GALLIX, B. PETERSEN, D. PICCOLO, F. PIERELLA, M. PIOPPI, P.A. PIROUE, E. PISTOLESI, V. PLYASKIN, M. POHL, V. POJIDAEV, J. POTHIER, D. PROKOFIEV, J. QUARTIERI, G. RAHAL-CALLOT, M.A.RAHAMAN, P. RAICS, N. RAJA, R. RAMELLI, P.G. RANCOITA, R. RANIERI, A. RASPEREZA, P. RAZIS, D. REN, M. RESCIGNO, S. REUCROFT, S. RIEMANN, K. RILES, B.P. ROE, L. ROMERO, A. ROSCA, C. ROSEMANN, C. ROSENBLECK, S. ROSIER-LEES, S. ROTH, J.A. RUBIO, G. RUGGIERO, H. RYKACZEWSKI, A. SAKHAROV, S. SAREMI, S. SARKAR, J. SALICIO, E. SANCHEZ, C. SCHAEFER, V. SCHEGELSKY, H. SCHOPPER, D.J. SCHOTANUS, C. SCIACCA, L. SERVOLI, S. SHEVCHENKO, N. SHIVAROV, V. SHOUTKO, E. SHUMILOV, A. SHVOROB, D. SON, C. SOUGA, P. SPILLANTINI, M. STEUER, D.P. STICKLAND, B. STOYANOV, A. STRAESSNER, K. SUDHAKAR, G. SULTANOV, L.Z. SUN, S. SUSHKOV, H. SUTER, J.D. SWAIN, Z. SZILLASI, X.W. TANG, P. TARJAN, L. TAUSCHER, L. TAYLOR, B. TELLILI, D. TEYSSIER, C. TIMMERMANS, SAMUEL C.C. TING, S.M. TING, S.C. TONWAR, J. TOTH, C. TULLY, K.L. TUNG, J. ULBRICHT, E. VALENTE, R.T. VAN DE WALLE, R. VASQUEZ, V. VESZPREMI, G. VESZTERGOMBI, I. VETLITSKI, D. VICINANZA, G. VIERTEL, S. VILLA, M. VIVARGENT, S. VLACHOS, I. VODOPIANOV, H. VOGEL, H. VOGT, I. VOROBIEV, A.A. VOROBYOV, M. WADHWA, Q. WANG, X.L. WANG, Z.M. WANG, M. WEBER, H. WILKENS, S. WYNHOFF, L. XIA, Z.Z. XU, J. YAMAMOTO, B.Z. YANG, C.G. YANG, H.J. YANG, M. YANG, S.C. YEH, AN. ZALITE, YU. ZALITE, Z.P. ZHANG, J. ZHAO, G.Y. ZHU, R.Y. ZHU, H.L. ZHUANG, A. ZICHICHI, B. ZIMMERMANN, M. ZOELLER, Achard, P, Adriani, O, Aguilar Benitez, M, Alcaraz, J, Alemanni, G, Allaby, J, Aloisio, A, Alviggi, M, Anderhub, H, Andreev, V, Anselmo, F, Arefiev, A, Azemoon, T, Aziz, T, Bagnaia, P, Bajo, A, Baksay, G, Baksay, L, Baldew, S, Banerjee, S, Barczyk, A, Barillère, R, Bartalini, P, Basile, M, Batalova, N, Battiston, R, Bay, A, Becattini, F, Becker, U, Behner, F, Bellucci, L, Berbeco, R, Berdugo, J, Berges, P, Bertucci, B, Betev, B, Biasini, M, Biglietti, M, Biland, A, Blaising, J, Blyth, S, Bobbink, G, Böhm, A, Boldizsar, L, Borgia, B, Bottai, S, Bourilkov, D, Bourquin, M, Braccini, S, Branson, J, Brochu, F, Burger, J, Burger, W, Cai, X, Capell, M, Cara Romeo, G, Carlino, G, Cartacci, A, Casaus, J, Cavallari, F, Cavallo, N, Cecchi, C, Cembranos, J, Cerrada, M, Chamizo, M, Chang, Y, Chemarin, M, Chen, A, Chen, G, Chen, H, Chiefari, G, Cifarelli, L, Cindolo, F, Clare, I, Clare, R, Coignet, G, Colino, N, Costantini, S, de La Cruz, B, Cucciarelli, S, van Dalen, J, de Asmundis, R, Déglon, P, Debreczeni, J, Degré, A, Dehmelt, K, Deiters, K, della Volpe, D, Delmeire, E, Denes, P, Denotaristefani, F, de Salvo, A, Diemoz, M, Dierckxsens, M, Dionisi, C, Dittmar, M, Doria, A, Dova, M, Duchesneau, D, Duda, M, Echenard, B, Eline, A, El Hage, A, El Mamouni, H, Engler, A, Eppling, F, Extermann, P, Falagan, M, Falciano, S, Favara, A, Fay, J, Fedin, O, Felcini, M, Ferguson, T, Fesefeldt, H, Fiandrini, E, Field, J, Filthaut, F, Fisher, P, Fisher, W, Fisk, I, Forconi, G, Freudenreich, K, Furetta, C, Galaktionov, Y, Ganguli, S, Garcia Abia, P, Gataullin, M, Gentile, S, Giagu, S, Gong, Z, Grenier, G, Grimm, O, Gruenewald, M, Guida, M, Gupta, V, Gurtu, A, Gutay, L, Haas, D, Hatzifotiadou, D, Hebbeker, T, Hervé, A, Hirschfelder, J, Hofer, H, Hohlmann, M, Holzner, G, Hou, S, Hu, Y, Jin, B, Jones, L, de Jong, P, Josa Mutuberría, I, Kaur, M, Kienzle Focacci, M, Kim, J, Kirkby, J, Kittel, W, Klimentov, A, König, A, Kopal, M, Koutsenko, V, Kräber, M, Kraemer, R, Krüger, A, Kunin, A, Ladron de Guevara, P, Laktineh, I, Landi, G, Lebeau, M, Lebedev, A, Lebrun, P, Lecomte, P, Lecoq, P, Le Coultre, P, Le Goff, J, Leiste, R, Levtchenko, M, Levtchenko, P, Li, C, Likhoded, S, Lin, C, Lin, W, Linde, F, Lista, L, Liu, Z, Lohmann, W, Longo, E, Lu, Y, Luci, C, Luminari, L, Lustermann, W, Ma, W, Malgeri, L, Malinin, A, Maña, C, Mans, J, Martin, J, Marzano, F, Mazumdar, K, Mcneil, R, Mele, S, Merola, L, Meschini, M, Metzger, W, Mihul, A, Milcent, H, Mirabelli, G, Mnich, J, Mohanty, G, Muanza, G, Muijs, A, Musicar, B, Musy, M, Nagy, S, Natale, S, Napolitano, M, Nessi Tedaldi, F, Newman, H, Nisati, A, Novak, T, Nowak, H, Ofierzynski, R, Organtini, G, Pal, I, Palomares, C, Paolucci, P, Paramatti, R, Passaleva, G, Patricelli, S, Pattison, C, Paul, T, Pauluzzi, M, Paus, C, Pauss, F, Pedace, M, Pensotti, S, Perret Gallix, D, Petersen, B, Piccolo, D, Pierella, F, Pioppi, M, Piroué, P, Pistolesi, E, Plyaskin, V, Pohl, M, Pojidaev, V, Pothier, J, Prokofiev, D, Quartieri, J, Rahal Callot, G, Rahaman, M, Raics, P, Raja, N, Ramelli, R, Rancoita, P, Ranieri, R, Raspereza, A, Razis, P, Ren, D, Rescigno, M, Reucroft, S, Riemann, S, Riles, K, Roe, B, Romero, L, Rosca, A, Rosemann, C, Rosenbleck, C, Rosier Lees, S, Roth, S, Rubio, J, Ruggiero, G, Rykaczewski, H, Sakharov, A, Saremi, S, Sarkar, S, Salicio, J, Sanchez, E, Schäfer, C, Schegelsky, V, Schopper, H, Schotanus, D, Sciacca, C, Servoli, L, Shevchenko, S, Shivarov, N, Shoutko, V, Shumilov, E, Shvorob, A, Son, D, Souga, C, Spillantini, P, Steuer, M, Stickland, D, Stoyanov, B, Straessner, A, Sudhakar, K, Sultanov, G, Sun, L, Sushkov, S, Suter, H, Swain, J, Szillasi, Z, Tang, X, Tarjan, P, Tauscher, L, Taylor, L, Tellili, B, Teyssier, D, Timmermans, C, Ting, S, Tonwar, S, Tóth, J, Tully, C, Tung, K, Ulbricht, J, Valente, E, van de Walle, R, Vasquez, R, Veszpremi, V, Vesztergombi, G, Vetlitsky, I, Vicinanza, D, Viertel, G, Villa, S, Vivargent, M, Vlachos, S, Vodopianov, I, Vogel, H, Vogt, H, Vorobiev, I, Vorobyov, A, Wadhwa, M, Wang, Q, Wang, X, Wang, Z, Weber, M, Wilkens, H, Wynhoff, S, Xia, L, Xu, Z, Yamamoto, J, Yang, B, Yang, C, Yang, H, Yang, M, Yeh, S, Zalite, A, Zalite, Y, Zhang, Z, Zhao, J, Zhu, G, Zhu, R, Zhuang, H, Zichichi, A, Zimmermann, B, Zöller, M, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and L3
Subjects: Nuclear and High Energy Physics, Particle physics, Photon, L3,CERN-LEP-L3, Electron–positron annihilation, Ciencias Físicas, FOS: Physical sciences, Context (language use), ddc:500.2, 01 natural sciences, Standard Model, High Energy Physics - Experiment, Nuclear physics, Momentum, purl.org/becyt/ford/1 [https], High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], brane fluctuations, 010306 general physics, Nuclear Experiment, Ciencias Exactas, Bhabha scattering, Physics, Missing energy, 010308 nuclear & particles physics, monte-carlo program, w-pair production, e(+)e(-) collisions, missing energy, l3 experiment, final-states, bhabha scattering, single-photon, root-s, dimensions, Física, branons, LEP, purl.org/becyt/ford/1.3 [https], Astronomía, High Energy Physics::Experiment, Brane, FIS/04 - FISICA NUCLEARE E SUBNUCLEARE, Particle Physics - Experiment, CIENCIAS NATURALES Y EXACTAS
Abstract: We search, in the context of extra-dimension scenarios, for the possible existence of brane fluctuations, called branons. Events with a single photon or a single Z-boson and missing energy and momentum collected with the L3 detector in e+e− collisions at centre-of-mass energies √2 = 189–209 GeV are analysed. No excess over the Standard Model expectations is found and a lower limit at 95% confidence level of 103 GeV is derived for the mass of branons, for a scenario with small brane tensions. Alternatively, under the assumption of a light branon, brane tensions below 180 GeV are excluded., Facultad de Ciencias Exactas
Published: 2004

45. The reaction at LEP and constraints on anomalous quartic gauge boson couplings

Author: C. Dionisi, Pablo Garcia-Abia, Alain Hervé, G. Ruggiero, A. Lebedev, Dong-Chul Son, G. Cara Romeo, B. P. Roe, J. Hirschfelder, Stefano Giagu, A. Bay, A. Arefiev, R. Leiste, R. R. McNeil, Subir Sarkar, F. Brochu, D. della Volpe, H. Milcent, Mariagrazia Alviggi, L. Xia, H. L. Zhuang, Arno Straessner, Alessandra Doria, M. Aguilar-Benitez, Z. Szillasi, O. Grimm, V. Koutsenko, Herwig Schopper, R. Barillère, A. Rosca, I. Vetlitsky, K. Freudenreich, Maurizio Biasini, G. Holzner, G. Mirabelli, R. Vasquez, S. Sushkov, Pierluigi Paolucci, Yu. Galaktionov, T. Paul, B. Musicar, J. Casaus, K. Riles, J. G. Branson, J. Alcaraz, J. D. Swain, Davide Piccolo, M. P. Sanders, B. L. Betev, Marta Felcini, S. N. Ganguli, K. Lübelsmeyer, A. Degré, Tariq Aziz, F. Marzano, G. Coignet, W. Krenz, P. Ladron de Guevara, Francesca Cavallari, D. Teyssier, M. W. Gruenewald, Francesco Becattini, S. Cucciarelli, A. Favara, M. Vivargent, C. Maña, A. Mihul, G. Alemanni, L. Z. Sun, A. Barczyk, Adrian Biland, B. De La Cruz, S. Roth, A. M. Cartacci, A. C. König, H. El Mamouni, Roberto Battiston, S. C. Yeh, A. Krüger, V. Veszpremi, C. G. Yang, H. J. Yang, Lamberto Luminari, L. Baksay, A. Bajo, Gerjan Bobbink, R. Ofierzynski, L. Bellucci, K. Sudhakar, B. Borgia, J. Pothier, Crisostomo Sciacca, Z. Z. Xu, M. T. Dova, Yu. Zalite, C. H. Lin, C. Souga, S. V. Baldew, I. Vodopianov, Z. M. Wang, J. Ulbricht, Marcella Diemoz, A. Engler, I. Josa-Mutuberria, M. Kräber, B. Zimmermann, M. Musy, Aleandro Nisati, D. P. Stickland, V. Pojidaev, Y. H. Chang, B. Tellili, D. O. Prokofiev, S. Wynhoff, C. Paus, H. F. Chen, S. Likhoded, J. P. Martin, J. J. Blaising, P. Déglon, Leonardo Merola, M. Capell, Z. P. Zhang, R. Berbeco, Konrad Deiters, G. B. Mohanty, J.V. Allaby, S. R. Hou, M. Biglietti, Speranza Falciano, Pierre Lecomte, S. Patricelli, Joseph Quartieri, M. Wadhwa, L. Malgeri, D. J. Schotanus, G. Forconi, Nicola Cavallo, Alberto Aloisio, L. Tauscher, M. Pohl, C-Q. Li, V. K. Gupta, H. S. Fesefeldt, E. Pistolesi, Kajari Mazumdar, Alexander S. Sakharov, T. Azemoon, G. Y. Zhu, L. Romero, Jasper Kirkby, M. A. Falagan, G. Landi, X. D. Cai, Jozsef Toth, K. Dehmelt, Werner Lustermann, M. Dierckxsens, Luca Lista, D. Pandoulas, M. Zöller, E. Shumilov, Marcus Hohlmann, X. W. Tang, W. J. Burger, D. Hatzifotiadou, P. A. Piroué, M. Chamizo, Marcos Cerrada, G. Schwering, Laszlo Boldizsar, Gianpaolo Carlino, F. DeNotaristefani, Oleg Fedin, A. J.M. Muijs, Michael Dittmar, C. Palomares, S. Natale, M. Bourquin, Felicitas Pauss, G. Grenier, P. G. Rancoita, B. N. Jin, M. Kopal, Manjit Kaur, H. Nowak, D. Vicinanza, Z. A. Liu, G. Passaleva, E. Valente, C. Furetta, Sabine Riemann, V. Plyaskin, S. Nagy, Max Weber, M. Steuer, Ya Han Hu, Claudia Cecchi, P. Achard, S. Reucroft, S. Vlachos, W. Wallraff, M. Rescigno, M. Gataullin, J. Debreczeni, S. Saremi, W. G. Ma, P. Le Coultre, D. Käfer, S. Villa, Suresh C Tonwar, S. Banerjee, Alexei Raspereza, Igor Vorobiev, M. A. Rahaman, D. Perret-Gallix, An.A. Vorobyov, H. Anderhub, P. Berges, Marco Meschini, J. M. Le Goff, J. Yamamoto, T. Niessen, P. Levtchenko, A. Böhm, Francesca Nessi-Tedaldi, O. Adriani, Panos A Razis, R.S. Hakobyan, C. Rosenbleck, J. Lätt, J. A. Rubio, G. Viertel, Z. F. Gong, Imad Baptiste Laktineh, Dimitri Bourilkov, Lucas Taylor, Alexander Malinin, J. D. Burger, D. Mangeol, Samuel C.C. Ting, Michele Guida, Simonetta Gentile, S. C. Blyth, T. Siedenburg, A. Klimentov, R. Ramelli, G. Rahal-Callot, Hans J. Vogel, J. A. van Dalen, N. Raja, D.W. Schmitz, P. de Jong, N. Shivarov, Claudio Luci, S. Braccini, W. C. Fisher, W. T. Lin, J. Berdugo, Robert Clare, J. K. Kim, E. J. Sanchez, S. Costantini, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, H. Suter, M. Napolitano, J. Mnich, P. Spillantini, P. Tarjan, An. Zalite, P. Wienemann, Georgi Sultanov, G. Baksay, D. Duchesneau, H. S. Chen, R. de Asmundis, I. Fisk, L. Servoli, X. L. Wang, M. Pauluzzi, G. Chiefari, S. Shevchenko, F. Behner, W. Kittel, D. Ren, M. Chemarin, B. Petersen, P. Raics, R. T. Van de Walle, G. M. Chen, V. Shoutko, A. Eline, D. Prokofiev, E. Fiandrini, Luisa Cifarelli, Gyorgy Vesztergombi, Christopher George Tully, S. Pensotti, Valery Schegelsky, B. Echenard, M. Pioppi, Antonino Zichichi, L. J. Gutay, A. Ewers, U. Becker, A. De Salvo, Wolfgang Lohmann, H. Rykaczewski, Giovanni Organtini, P. Bartalini, H. Wilkens, B. Bertucci, H. Vogt, Mingming Yang, S. Bottai, F. J. Eppling, L. W. Jones, S. Rosier-Lees, G. S. Muanza, Harvey B Newman, P. H. Fisher, S. M. Ting, F. Anselmo, Jean Fay, Nicanor Colino, Riccardo Paramatti, M. N. Kienzle-Focacci, A. Kunin, W. J. Metzger, M. Lebeau, D. Haas, Vladimir Andreev, P. Lebrun, Jeremy Mans, Guo-Ming Chen, F. L. Linde, A. Chen, J. Salicio, Ren-Yuan Zhu, M. Pedace, A. Gurtu, E. Delmeire, Y. S. Lu, A. Shvorob, R. Ranieri, M. Levtchenko, J. H. Field, B. Stoyanov, S. Schmidt-Kaerst, Peter Denes, Paolo Bagnaia, F. Pierella, Frank Filthaut, Thomas Ferguson, R. van Gulik, C. J.W.P. Timmermans, P. Extermann, Salvatore Mele, Christoph Schäfer, B. Z. Yang, H. Hofer, K. L. Tung, Egidio Longo, Jiawei Zhao, and B. Roux
Subjects: Physics, Nuclear and High Energy Physics, Gauge boson, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Resonance, 01 natural sciences, Standard Model, Nuclear physics, Full data, Quartic function, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: The cross section of the process e + e − → Z γ γ → q q ¯ γ γ is measured with 215 pb−1 of data collected with the L3 detector during the final LEP run at centre-of-mass energies around 205 GeV and 207 GeV. No deviation from the Standard Model expectation is observed. The full data sample of 713 pb−1, collected above the Z resonance, is used to constrain the coefficients of anomalous quartic gauge boson couplings to: − 0.02 GeV − 2 a 0 / Λ 2 0.03 GeV − 2 , − 0.07 GeV − 2 a c / Λ 2 0.05 GeV − 2 , at 95% confidence level.
Published: 2002

46. Determination of αs from hadronic event shapes in e+e− annihilation at GeV

Author: W. J. Burger, Michael Dittmar, Tariq Aziz, D. Teyssier, Z. Szillasi, B. Musicar, Roberto Battiston, V. Koutsenko, M. Kopal, Gerjan Bobbink, B. Borgia, A. Favara, M. T. Dova, J. Ulbricht, A. M. Cartacci, A. C. König, G. Chiefari, S. Shevchenko, S. Nagy, M. Steuer, F. Behner, Riccardo Paramatti, B. Tellili, A. Kunin, W. J. Metzger, D. Haas, A. Böhm, S. Pensotti, Valery Schegelsky, Antonino Zichichi, Marcella Diemoz, M. Rescigno, A. Krüger, M. A. Rahaman, H. Rykaczewski, Giovanni Organtini, V. Plyaskin, Crisostomo Sciacca, H. Wilkens, S. Rosier-Lees, G. S. Muanza, P. Lebrun, T. Paul, J. Casaus, Jean Fay, Jeremy Mans, S. Sushkov, G. Cara Romeo, I. Clare, H. Anderhub, D. Perret-Gallix, Francesca Cavallari, S. Roth, R. Ranieri, C. G. Yang, J. Pothier, Yu. Zalite, Z. Z. Xu, C. H. Lin, V. Pojidaev, B. De La Cruz, J. G. Branson, Guo-Ming Chen, F. L. Linde, Davide Piccolo, S. N. Ganguli, G. Ruggiero, A. Chen, R. van Gulik, C. J.W.P. Timmermans, J. P. Martin, P. Extermann, Salvatore Mele, G. Mirabelli, P. Tarján, Alexei Raspereza, Alexander S. Sakharov, Michele Guida, S. C. Blyth, Marco Meschini, Dimitri Bourilkov, Christoph Schäfer, B. Z. Yang, H. Hofer, S. Braccini, B. Zimmermann, J. Salicio, P. Spillantini, G. Y. Zhu, E. Shumilov, L. Z. Sun, A. Degré, K. L. Tung, E. Valente, K. Sudhakar, B. Petersen, K. Lübelsmeyer, J. A. van Dalen, G. Schwering, R. Leiste, G. Passaleva, I. Josa-Mutuberria, M. Kräber, Konrad Deiters, G. B. Mohanty, Alberto Aloisio, E. Fiandrini, Gyorgy Vesztergombi, A. Lebedev, M. Musy, J. J. Blaising, R.S. Hakobyan, Dong-Chul Son, P. Déglon, B. Echenard, Luca Lista, Claudia Cecchi, L. Bellucci, R. de Asmundis, I. Fisk, Alessandra Doria, Christopher George Tully, Speranza Falciano, Sw. Banerjee, G. Viertel, R. Berbeco, A. De Salvo, B. P. Roe, Z. M. Wang, Subir Sarkar, G. Forconi, M. Pohl, R. Barillère, An.A. Vorobyov, P. Bartalini, Jozsef Toth, D. Pandoulas, J. Hirschfelder, Sabine Riemann, C. Dionisi, S. Bottai, F. Brochu, Pablo Garcia-Abia, Hans J. Vogel, A. Rosca, Lamberto Luminari, Stefano Giagu, J. D. Swain, V. Shoutko, A. Arefiev, X. W. Tang, Alain Hervé, D. della Volpe, Harvey B Newman, R. R. McNeil, W. T. Lin, P. A. Piroué, Wolfgang Lohmann, B. Bertucci, O. Adriani, A. Bay, Imad Baptiste Laktineh, Lucas Taylor, E. Delmeire, Y. S. Lu, A. Shvorob, M. Levtchenko, S. Costantini, G. Grenier, J.V. Allaby, S. Patricelli, J. H. Field, H. L. Zhuang, Arno Straessner, M. Chamizo, X. L. Wang, M. Pauluzzi, G. Holzner, P. G. Rancoita, S. Reucroft, L. Xia, M. P. Sanders, B. L. Betev, M. Vivargent, H. El Mamouni, Pierre Lecomte, B. Stoyanov, S. V. Baldew, D. Hatzifotiadou, Laszlo Boldizsar, F. Anselmo, Nicanor Colino, S. Schmidt-Kaerst, S. R. Hou, M. Wadhwa, Samuel C.C. Ting, Simonetta Gentile, Pierluigi Paolucci, P. Ladron de Guevara, D. J. Schotanus, K. Riles, K. Freudenreich, Vladimir Andreev, B. N. Jin, M. Aguilar-Benitez, O. Grimm, H. Nowak, Mariagrazia Alviggi, J. Debreczeni, F. Marzano, G. Coignet, W. Krenz, D. O. Prokofiev, D. Käfer, D. Vicinanza, A. Klimentov, Herwig Schopper, D. Ren, Werner Lustermann, M. Dierckxsens, Ren-Yuan Zhu, M. Pedace, L. Baksay, S. Cucciarelli, Jasper Kirkby, M. A. Falagan, C. Paus, I. Vetlitsky, C. Maña, R. T. Van de Walle, M. Zöller, A. Bajo, Oleg Fedin, A. Gurtu, W. Wallraff, A. Barczyk, L. Malgeri, S. Villa, S. Banerjee, Igor Vorobiev, Max Weber, S. Natale, Adrian Biland, P. Levtchenko, Panos A Razis, S. Vlachos, Peter Denes, A. Eline, C. Furetta, D. Prokofiev, Luisa Cifarelli, T. Niessen, M. W. Gruenewald, Egidio Longo, M. Pioppi, L. J. Gutay, Paolo Bagnaia, U. Becker, F. Pierella, C. Rosenbleck, J. Berdugo, E. J. Sanchez, H. Vogt, J. K. Kim, Jiawei Zhao, M. Gataullin, Federico Cindolo, F. J. Eppling, L. W. Jones, G. Baksay, P. H. Fisher, S. M. Ting, J. Mnich, I. Vodopianov, A. Engler, Frank Filthaut, Thomas Ferguson, S. Wynhoff, M. Capell, B. Roux, M. Biglietti, H. S. Fesefeldt, E. Pistolesi, Francesca Nessi-Tedaldi, J. D. Burger, T. Siedenburg, G. Rahal-Callot, N. Raja, H. Suter, H. Milcent, D. P. Stickland, Y. H. Chang, G. Landi, L. Romero, A. J.M. Muijs, Manjit Kaur, M. Bourquin, P. Achard, Suresh C Tonwar, R. Ramelli, D.W. Schmitz, P. de Jong, N. Shivarov, Claudio Luci, Robert Clare, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, D. Duchesneau, H. S. Chen, L. Servoli, C. Palomares, Felicitas Pauss, W. G. Ma, P. Le Coultre, M. Basile, D. Mangeol, V. Veszpremi, Aleandro Nisati, Joseph Quartieri, Nicola Cavallo, Z. F. Gong, P. Wienemann, Georgi Sultanov, M. N. Kienzle-Focacci, M. Lebeau, M. Chemarin, G. M. Chen, W. Kittel, A. Ewers, Mingming Yang, Z. A. Liu, S. Saremi, J. M. Le Goff, J. Yamamoto, J. A. Rubio, N. Batalova, C-Q. Li, Z. P. Zhang, Peter Raics, V. K. Gupta, Kajari Mazumdar, X. D. Cai, Gianpaolo Carlino, F. DeNotaristefani, Marcus Hohlmann, Ya Han Hu, P. Berges, Alexander Malinin, W. C. Fisher, An. Zalite, Maurizio Biasini, Marta Felcini, Francesco Becattini, H. J. Yang, R. Ofierzynski, H. F. Chen, G. Zilizi, S. Likhoded, Yu. Galaktionov, J. Alcaraz, A. Mihul, G. Alemanni, S. C. Yeh, Leonardo Merola, L. Tauscher, T. Azemoon, and Marcos Cerrada
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, 01 natural sciences, Nuclear physics, Yield (chemistry), 0103 physical sciences, Bibliography, High Energy Physics::Experiment, 010306 general physics, Constant (mathematics), Event (particle physics)
Abstract: Results are presented from a study of the structure of high energy hadronic events recorded by the L3 detector at s ⩾192 GeV. The distributions of several event shape variables are compared to resummed O (α s 2 ) QCD calculations. We determine the strong coupling constant at three average centre-of-mass energies: 194.4, 200.2 and 206.2 GeV. These measurements, combined with previous L3 measurements at lower energies, demonstrate the running of α s as expected in QCD and yield α s ( m Z )=0.1227±0.0012±0.0058, where the first uncertainty is experimental and the second is theoretical.
Published: 2002

47. Search for excited leptons in e+e− interactions at –202 GeV

Author: Michele Guida, B. Smith, S. Braccini, J. G. Branson, W. J. Burger, Michael Dittmar, R. de Asmundis, I. Fisk, S. Villa, Davide Piccolo, S. N. Ganguli, Pàl Hidas, S. Bhattacharya, Xl Wang, A. Buijs, A. Degré, D. Kim, J. D. Swain, L. Z. Sun, A. Böhm, L. Bellucci, A. Rosca, B. Musicar, D. Prokofiev, Luisa Cifarelli, P. Lebrun, L. J. Gutay, An.A. Vorobyov, U. Becker, I. Duran, C. Dionisi, Pablo Garcia-Abia, Alain Hervé, Francesca Cavallari, Jeremy Mans, A. C. Weber, Marcella Diemoz, F. J. Eppling, L. W. Jones, O. Adriani, Imad Baptiste Laktineh, Lucas Taylor, Riccardo Paramatti, Y. Uchida, S. M. Ting, A. Bay, Carlo Civinini, J. P. Martin, M. Acciarri, W. Kittel, G. Mirabelli, H.F. Chen, R. van Gulik, P. Extermann, Salvatore Mele, Christoph Schäfer, H. Hofer, A. Kunin, G. Raven, L. Xia, M. Aguilar-Benitez, O. Grimm, B. P. Roe, K. L. Tung, Herwig Schopper, K. Lübelsmeyer, G. Y. Zhu, E. Shumilov, Guo-Ming Chen, F. L. Linde, T. Angelescu, Minhong Wang, Hafeez R Hoorani, M. P. Sanders, B. L. Betev, Subir Sarkar, H. Postema, F. Brochu, V. K. Gupta, S. X. Wu, M. Kopal, E. Valente, Inkyu Park, M. Steuer, V. Shoutko, A. Buffini, R. Barillère, M. A. Rahaman, D. Perret-Gallix, D. della Volpe, Lamberto Luminari, Claudia Cecchi, Samuel C.C. Ting, G. Ruggiero, A. Chen, D. van Dierendonck, J. Salicio, M. W. Gruenewald, G. Ambrosi, I. Josa-Mutuberria, M. Kräber, M. Musy, J. Casaus, R. Berbeco, G. Forconi, M. Pohl, Z. A. Liu, A. Vorvolakos, Zhidong Zhang, W. J. Metzger, R. Leiste, Christoph Paus, Pierre Lecomte, L. Lugnier, G. Viertel, A. Arefiev, S. Sushkov, H. Milcent, A. Oulianov, Zhenghao Xu, C. Palomares, A. Lebedev, Dong-Chul Son, H. El Mamouni, A. Ewers, Z. Szillasi, Gianpaolo Carlino, F. DeNotaristefani, V. Koutsenko, Werner Lustermann, Charles Timmermans, M. Dierckxsens, A. Malinin, C. G. Yang, J. Pothier, Yu. Zalite, S. V. Baldew, D. O. Prokofiev, R. R. McNeil, T. Paul, P. Wienemann, Georgi Sultanov, T. S. Dai, R. A. Khan, G. Holzner, K. Riles, F. Marzano, G. Coignet, W. Krenz, Jozsef Toth, Claudio Luci, D. Pandoulas, M. Rescigno, M. Pauluzzi, S. Saremi, D. Haas, Yu. Galaktionov, J. Alcaraz, J. J. Blaising, J. Hirschfelder, H.J. Lee, Stefano Giagu, A. M. Cartacci, Hans J. Vogel, W. T. Lin, Jasper Kirkby, M. A. Falagan, A. C. König, S. Vlachos, J.V. Allaby, S. Patricelli, D. Ren, E. Delmeire, U. K. Chaturvedi, Y. S. Lu, M. Fabre, B. Tellili, M. Zöller, Stefan Roth, Anna Katharina Kopp, Vladimir Andreev, D. Hatzifotiadou, T. Moulik, Laszlo Boldizsar, S. Costantini, A. Shvorob, J. Rodin, Egidio Longo, Igor Vorobiev, Mariagrazia Alviggi, P. Levtchenko, V. Plyaskin, D. Dufournaud, Ya Han Hu, T. Niessen, Mingming Yang, J. H. Field, A. Bajo, Panos A Razis, A. Mihul, M. Vivargent, G. Alemanni, C. Li, I. Vetlitsky, M. Chemarin, N. Cavallo, C. H. Lin, V. Pojidaev, F. C. Erné, B. Stoyanov, A. Balandras, J. M. Le Goff, J. Yamamoto, Bz Yang, A. Barczyk, Oleg Fedin, S. Schmidt-Kaerst, S. Pensotti, Valery Schegelsky, Antonino Zichichi, N. Gheordanescu, J. Berdugo, G. Grenier, S. C. Yeh, Adrian Biland, D. Kiss, D. P. Stickland, Y. H. Chang, Alexei Raspereza, M. T. Dova, G. M. Chen, J. A. van Dalen, E. J. Sanchez, Ren-Yuan Zhu, Manas Maity, K. Freudenreich, Peter H. Fisher, J. A. Rubio, A. Straessner, Luca Lista, M. Pedace, A. Krüger, Alessandra Doria, P. Berges, L. Romero, A. Gurtu, H. Rykaczewski, Giovanni Organtini, H. Wilkens, S. Reucroft, Max Weber, D. Käfer, Raffaello D'Alessandro, N. Batalova, S. Cucciarelli, C. Maña, Aleandro Nisati, Sabine Riemann, I. Vodopianov, A. Engler, A. Hasan, Peter Denes, Leonardo Merola, M. Capell, H. K. Park, L. Tauscher, H. S. Fesefeldt, E. Pistolesi, Joseph Quartieri, T. Azemoon, S. R. Hou, M. Wadhwa, D. J. Schotanus, Kajari Mazumdar, Roberto Battiston, M. Bourquin, P. Raics, X. D. Cai, Paolo Bagnaia, F. Pierella, Federico Cindolo, Marcos Cerrada, Aaron Dominguez, Gerjan Bobbink, G. Castellini, B. Borgia, F. Cesaroni, Jean Fay, P. Achard, Maurizio Biasini, J. Ulbricht, Felicitas Pauss, S. C. Tonwar, Frank Filthaut, S. Rosier-Lees, P. Le Coultre, Pierluigi Paolucci, Z. F. Gong, M. Basile, G. Chiefari, S. Shevchenko, G. Zilizi, Thomas Ferguson, F. Behner, Marta Felcini, S. C. Blyth, Marco Meschini, D. Mangeol, G. Cara Romeo, K. Sudhakar, Christopher George Tully, D. Luckey, G. Schwering, Wolfgang Lohmann, Francesca Nessi-Tedaldi, L. Baksay, F. Cotorobai, H. Vogt, B. Bertucci, F. Anselmo, Nicanor Colino, I. Clare, Giovanni Passaleva, J. D. Burger, T. Siedenburg, M. von der Mey, G. Rahal-Callot, N. Raja, G. Marian, Francesco Becattini, J. B. Ye, M. N. Kienzle-Focacci, A. Csilling, M. Lebeau, H. Suter, Ia Iashvili, H. J. Yang, R. Ofierzynski, C. Furetta, S. Likhoded, S. Wynhoff, C. Rosenbleck, W.G. Ma, T. Sztaricskai, J. K. Kim, Tariq Aziz, An. Zalite, J. Mnich, A. Favara, Zheng Wang, P. Ladron de Guevara, Crisostomo Sciacca, Marco Pieri, P. G. Rancoita, B. N. Jin, H. Nowak, D. Vicinanza, Dimitri Bourilkov, P. Spillantini, B. Petersen, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, A. De Salvo, P. Bartalini, W. Wallraff, A. Seganti, Harvey B Newman, S. Banerjee, B. Zimmermann, Konrad Deiters, G. B. Mohanty, Alberto Aloisio, X. W. Tang, P. Duinker, G. Landi, P. A. Piroué, Simonetta Gentile, M. Chamizo, Simone Paoletti, A. Klimentov, A. J.M. Muijs, Sw. Banerjee, Manjit Kaur, R. Ranieri, B. De La Cruz, P. Déglon, Speranza Falciano, R. Ramelli, D.W. Schmitz, S. S. Gau, P. de Jong, N. Shivarov, M. Gataullin, Robert Clare, A. Stone, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, D. Duchesneau, H. S. Chen, L. Servoli, G.S. Muanza, and H. Anderhub
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, 7. Clean energy, 01 natural sciences, Pair production, Excited state, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: Excited leptons are searched for using the L3 detector at LEP. The data collected at centre-of-mass energies in the range from 192 up to 202 GeV correspond to a total luminosity of 233 pb−1. No evidence of either pair production of excited leptons, nor of single production is found. From the searches for pair produced excited leptons, lower mass limits close to the kinematic limit are set. From the searches for singly produced excited leptons, upper limits on their couplings are derived in the mass range up to 200 GeV.
Published: 2001

48. Bose-Einstein correlations in W-pair production at LEP: Results from L3 and Opal

Author: J. A. van Dalen
Subjects: Condensed Matter::Quantum Gases, Physics, Nuclear physics, Nuclear and High Energy Physics, Pair production, High Energy Physics::Experiment, Bose–Einstein correlations, Atomic and Molecular Physics, and Optics, Communication channel
Abstract: A report is given on a study of Bose-Einstein correlations in W-pair production at LEP2. In particular, Bose-Einstein correlations are investigated in W+W− overlap and the possible existence of these correlations between particles coming from different W's, which may influence the W mass measurements in the four-jet channel e+e− → W+W− → q1 q 2q3 q 4. Results obtained by the L3 and Opal detectors are given. No evidence for such an inter-W Bose-Einstein correlation is found by L3 and the results of Opal are inconclusive due to lack of statistics.
Published: 2001

49. Measurement of the topological branching fractions of the $\tau$ lepton at LEP

Author: S. Sushkov, Yu. Galaktionov, G. Schwering, K. Freudenreich, J. Alcaraz, A. Barczyk, B. Tellili, C. Furetta, Adrian Biland, G. Forconi, M. Pohl, C. Rosenbleck, Lamberto Luminari, A. Mihul, G. Alemanni, Jozsef Toth, S. Cucciarelli, D. Pandoulas, I. Vodopianov, J.V. Allaby, S. Patricelli, A. Engler, Luca Lista, S. Wynhoff, Tariq Aziz, M. Capell, D. Hatzifotiadou, M. Biglietti, C. Maña, H. S. Fesefeldt, E. Pistolesi, S. C. Yeh, G. Grenier, J. K. Kim, Laszlo Boldizsar, G. Baksay, Sabine Riemann, Pierre Lecomte, J. Mnich, S. Reucroft, J. Debreczeni, D. Käfer, Samuel C.C. Ting, Z. F. Gong, B. Musicar, Francesca Nessi-Tedaldi, Werner Lustermann, Charles Timmermans, M. Dierckxsens, C. Palomares, R. Barillère, A. Malinin, L. J. Gutay, S. V. Baldew, D. O. Prokofiev, Crisostomo Sciacca, Jasper Kirkby, M. A. Falagan, U. Becker, M. Zöller, V. Plyaskin, A. Favara, Leonardo Merola, R. Leiste, J. D. Burger, T. Siedenburg, G. Rahal-Callot, Alexei Raspereza, Dimitri Bourilkov, P. Spillantini, J. Zhao, L. Tauscher, A. Krüger, G. Passaleva, M. W. Gruenewald, I. Josa-Mutuberria, M. Kräber, Marcella Diemoz, Felicitas Pauss, N. Raja, T. Azemoon, Zhenghao Xu, A. Lebedev, B. Zimmermann, M. Musy, Y. Uchida, Dong-Chul Son, J. J. Blaising, J. Hirschfelder, Stefano Giagu, Zheng Wang, W. Kittel, B. Petersen, R. Berbeco, Konrad Deiters, F. J. Eppling, L. W. Jones, Pierluigi Paolucci, S. M. Ting, E. Fiandrini, S. Rosier-Lees, H. Suter, Marcos Cerrada, G. B. Mohanty, Alberto Aloisio, T. Paul, Gyorgy Vesztergombi, Mariagrazia Alviggi, Minhong Wang, M. P. Sanders, B. L. Betev, K. Sudhakar, A. Ewers, G. Mirabelli, H.F. Chen, A. Arefiev, H. Milcent, I. Vetlitsky, P. Le Coultre, M. Basile, R. R. McNeil, D. Teyssier, Alessandra Doria, Maurizio Biasini, S. Vlachos, Mingming Yang, B. Echenard, A. De Salvo, X. W. Tang, H. L. Zhuang, Marta Felcini, A. M. Cartacci, Arno Straessner, K. Lübelsmeyer, A. C. König, P. Lebrun, P. A. Piroué, P. Ladron de Guevara, G. Holzner, M. Chamizo, P. Bartalini, K. Riles, T. Niessen, D. P. Stickland, F. Ziegler, Y. H. Chang, Jeremy Mans, F. Marzano, G. Coignet, Egidio Longo, W. Krenz, M. N. Kienzle-Focacci, B. P. Roe, Francesco Becattini, D. Mangeol, Harvey B Newman, P. G. Rancoita, C. H. Lin, W. J. Burger, B. N. Jin, S. X. Wu, Roberto Battiston, V. Pojidaev, M. Lebeau, Michael Dittmar, A. Eline, D. Prokofiev, Luisa Cifarelli, M. Kopal, H. Nowak, D. Vicinanza, L. Romero, An.A. Vorobyov, S. Nagy, M. Steuer, D. Luckey, Gerjan Bobbink, B. Borgia, M. T. Dova, J. Ulbricht, M. Vivargent, S. R. Hou, M. Wadhwa, W. Wallraff, M. Bourquin, Subir Sarkar, D. J. Schotanus, P. Raics, R. T. Van de Walle, M. A. Rahaman, D. Perret-Gallix, S. Banerjee, Guo-Ming Chen, M. Gataullin, F. L. Linde, O. Adriani, F. Brochu, P. Achard, Imad Baptiste Laktineh, Lucas Taylor, G. Cara Romeo, D. della Volpe, Roger Moore, H. J. Yang, I. Clare, J. Casaus, P. Lacentre, G. Ruggiero, A. Chen, D. van Dierendonck, A. Böhm, R. Ofierzynski, P. Wienemann, Georgi Sultanov, C. G. Yang, T. S. Dai, J. Pothier, B. Roux, E. Valente, M. Rescigno, Yu. Zalite, H. El Mamouni, S. Likhoded, R. Ranieri, J. Salicio, G. Viertel, B. De La Cruz, J. G. Branson, Hans J. Vogel, E. Delmeire, Y. S. Lu, M. Chemarin, N. Cavallo, G. M. Chen, J. A. van Dalen, Davide Piccolo, W. T. Lin, S. Costantini, A. Shvorob, S. N. Ganguli, P. Déglon, Peter H. Fisher, Speranza Falciano, Sw. Banerjee, V. Veszpremi, Zhidong Zhang, J. H. Field, A. Degré, C. Li, W.G. Ma, W. C. Fisher, Marc M Baarmand, Aleandro Nisati, B. Stoyanov, S. Schmidt-Kaerst, Ren-Yuan Zhu, P. Duinker, G. Chiefari, Simonetta Gentile, S. Shevchenko, F. Behner, Joseph Quartieri, A. Klimentov, Bz Yang, M. Pedace, Oleg Fedin, An. Zalite, Max Weber, A. Gurtu, V. K. Gupta, Z. Szillasi, H. Anderhub, Gianpaolo Carlino, V. Koutsenko, Michele Guida, F. DeNotaristefani, R. van Gulik, P. Extermann, Salvatore Mele, Christoph Schäfer, H. Hofer, Ya Han Hu, K. L. Tung, S. Braccini, P. Berges, R. de Asmundis, I. Fisk, L. Baksay, Z. A. Liu, S. Saremi, Stefan Roth, J. M. Le Goff, J. Yamamoto, J. A. Rubio, N. Batalova, Kajari Mazumdar, X. D. Cai, Francesca Cavallari, John Swain, J. P. Martin, Alexander S. Sakharov, G. Y. Zhu, E. Shumilov, V. Shoutko, Claudia Cecchi, S. Villa, Igor Vorobiev, P. Levtchenko, Panos A Razis, J. Berdugo, E. J. Sanchez, M. Pauluzzi, H.J. Lee, D. Ren, A. P. Colijn, Riccardo Paramatti, A. Kunin, W. J. Metzger, F. Pierella, D. Haas, Federico Cindolo, S. Pensotti, Valery Schegelsky, Antonino Zichichi, H. Rykaczewski, Giovanni Organtini, S. C. Tonwar, Frank Filthaut, H. Wilkens, Thomas Ferguson, Jean Fay, G. Landi, A. J.M. Muijs, Vladimir Andreev, Manjit Kaur, A. Buijs, Peter Denes, Paolo Bagnaia, R. Ramelli, D.W. Schmitz, S. C. Blyth, Marco Meschini, P. de Jong, N. Shivarov, Claudio Luci, Robert Clare, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, P. Tarjan, D. Duchesneau, H. S. Chen, L. Servoli, G.S. Muanza, Christopher George Tully, Wolfgang Lohmann, H. Vogt, C. Paus, B. Bertucci, G. Zilizi, L. Malgeri, F. Anselmo, Nicanor Colino, C. Dionisi, Pablo Garcia-Abia, Alain Hervé, A. Bay, L. Xia, M. Aguilar-Benitez, O. Grimm, Herwig Schopper, H. Postema, Xl Wang, L. Z. Sun, L. Bellucci, A. Rosca, A. Bajo, Achard, Pablo, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Echenard, Bertrand, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Malgeri, Luca, Natale, Sonia, Pohl, Martin, L3 (IHEF, IoP, FNWI), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, Achard, P., Adriani, O., Aguilar Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, Alberto, Alviggi, Mariagrazia, Anderhub, H., Andreev, V. P., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Baarmand, M., Bagnaia, P., Bajo, A., Baksay, G., Baksay, L., Baldew, S. V., Banerjee, S., Barczyk, A., Barillere, R., Bartalini, P., Basile, M., Batalova, N., Battiston, R., Bay, A., Becattini, F., Becker, U., Behner, F., Bellucci, L., Berbeco, R., Berdugo, J., Berges, P., Bertucci, B., Betev, B. L., Biasini, M., Biglietti, M., Biland, A., Blaising, J. J., Blyth, S. C., Bobbink, G. J., Bohm, A., Boldizsar, L., Borgia, B., Bourilkov, D., Bourquin, M., Braccini, S., Branson, J. G., Brochu, F., Buijs, A., Burger, J. D., Burger, W. J., Cai, X. D., Capell, M., Romeo, G. C., Carlino, G., Cartacci, A., Casaus, J., Cavallari, F., Cavallo, N., Cecchi, C., Cerrada, M., Chamizo, M., Chang, Y. H., Chemarin, M., Chen, A., Chen, G., Chen, G. M., Chen, H. F., Chen, H. S., Chiefari, Giovanni, Cifarelli, L., Cindolo, F., I, C., Clare, R., Coignet, G., Colijn, A. P., Colino, N., Costantini, S., B. d., La, Cucciarelli, S., Dai, T. S., Van, J. A., Asmundis, R. d., Deglon, P., Debreczeni, J., Degre, A., Deiters, K., DELLA VOLPE, Domenico, Delmeire, E., Denes, P., Denotaristefani, F., Salvo, A. D., Diemoz, M., Dierckxsens, M., Dierendonck, D. v., Dionisi, C., Dittmar, M., Doria, A., Dova, M. T., Duchesneau, D., Duinker, P., Echenard, B., Eline, A., Mamouni, H. E., Engler, A., Eppling, F. J., Ewers, A., Extermann, P., Falagan, M. A., Falciano, S., Favara, A., Fay, J., Fedin, O., Felcini, M., Ferguson, T., Fesefeldt, H., Fiandrini, E., Field, J. H., Filthaut, F., Fisher, P. H., Fisher, W., I, F., Forconi, G., Freudenreich, K., Furetta, C., Galaktionov, Y., Ganguli, S. N., Garcia Abia, P., Gataullin, M., Gentile, S., Giagu, S., Gong, Z. F., Grenier, G., Grimm, O., Gruenewald, M. W., Guida, M., Gulik, R. v., Gupta, V. K., Gurtu, A., Gutay, L. J., Haas, D., Hatzifotiadou, D., Hebbeker, T., Herve, A., Hirschfelder, J., Hofer, H., Holzner, G., Sr, H., Hu, Y., Jin, B. N., Jones, L. W., Jong, P. d., I, J., Kafer, D., Kaur, M., Kienzle Focacci, M. N., Kim, J. K., Kirkby, J., Kittel, W., Klimentov, A., Konig, A. C., Kopal, M., V, K., Kraber, M., Kraemer, R. W., Krenz, W., Kruger, A., Kunin, A., Lacentre, P., P. L., De, I, L., Landi, G., Lebeau, M., Lebedev, A., Lebrun, P., Lecomte, P., Lecoq, P., Coultre, P. L., Lee, H. J., J. M., Le, Leiste, R., Levtchenko, P., Li, C., Likhoded, S., Lin, C. H., Lin, W. T., Linde, F. L., Lista, L., Liu, Z. A., Lohmann, W., Longo, E., Y. S., Lu, Lubelsmeyer, K., Luci, C., Luckey, D., Luminari, L., Lustermann, W., W. G., Ma, Malgeri, L., Malinin, A., Mana, C., Mangeol, D., Mans, J., Martin, J. P., Marzano, F., Mazumdar, K., Mcneil, R. R., Mele, S., Merola, Leonardo, Meschini, M., Metzger, W. J., Mihul, A., Milcent, H., Mirabelli, G., Mnich, J., Mohanty, G. B., Moore, R., Muanza, G. S., A. J. M., Musicar, B., Musy, M., Nagy, S., Napolitano, Marco, Nessi Tedaldi, F., Newman, H., Niessen, T., Nisati, A., Nowak, H., Ofierzynski, R., Organtini, G., Palomares, C., Pandoulas, D., Paolucci, P., Paramatti, R., Passaleva, G., Patricelli, Sergio, Paul, T., Pauluzzi, M., Paus, C., Pauss, F., Pedace, M., Pensotti, S., Perret Gallix, D., Petersen, B., Piccolo, D., Pierella, F., Piroue, P. A., Pistolesi, E., V, P., Pohl, M., Postema, H., Pothier, J., Prokofiev, D. O., Prokofiev, D., Quartieri, J., Rahal Callot, G., Rahaman, M. A., Raics, P., Raja, N., Ramelli, R., Rancoita, P. G., Ranieri, R., Raspereza, A., Razis, R., Ren, D., Rescigno, M., Reucroft, S., Riemann, S., Riles, K., Roe, B. P., Romero, L., Rosca, A., Rosier Lees, S., Roth, S., Rosenbleck, C., Roux, B., Rubio, J. A., Ruggiero, G., Rykaczewski, H., Sakharov, A., Saremi, S., Sarkar, S., Salicio, J., Sanchez, E., Sanders, M. P., Schafer, C., V, S., Schmidt Kaerst, S., Schmitz, D., Schopper, H., Schotanus, D. J., Schwering, G., Sciacca, Crisostomo, Servoli, L., Shevchenko, S., Shivarov, N., Shumilov, E., Shvorob, A., Siedenburg, T., Son, D., Spillantini, P., Steuer, M., Stickland, D. P., Stoyanov, B., Straessner, A., Sudhakar, K., Sultanov, G., Sun, L. Z., Sushkov, S., Suter, H., Swain, J. D., Szillasi, Z., Tang, X. W., Tarjan, P., Tauscher, L., Taylor, L., Tellili, B., Teyssier, D., Timmermans, C., S. C. C., Ting, S. M., Tonwar, S. C., Toth, T., Tully, C., Tung, K. L., Uchida, Y., Ulbricht, J., Valente, E., Van, R. T., V, V., Vesztergombi, G., I, V., Vicinanza, D., Viertel, G., Villa, S., Vivargent, M., Vlachos, S., Vogel, H., Vogt, H., Vorobyov, A. A., Wadhwa, M., Wallraff, W., Wang, M., Wang, X. L., Wang, Z. M., Weber, M., Wienemann, P., Wilkens, H., S. X., Wu, Wynhoff, S., Xia, L., Z. Z., Xu, Yamamoto, J., Yang, B. Z., Yang, C. G., Yang, H. J., Yang, M., Yeh, S. C., Zalite, A., Zalite, Y., Zhang, Z. P., Zhao, J., Zhu, G. Y., Zhu, R. Y., Zhuang, H. L., Zichichi, A., Ziegler, F., Zilizi, G., Zimmermann, B., and Zoller, M.
Subjects: COLLISIONS, Particle physics, Nuclear and High Energy Physics, PAIR PRODUCTION, Electron–positron annihilation, L3 detector at LEP, FOS: Physical sciences, ddc:500.2, 01 natural sciences, CROSS-SECTIONS, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), MONTE-CARLO, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ANGLE BHABHA SCATTERING, 010306 general physics, DETECTOR, Ciencias Exactas, L3 EXPERIMENT, Physics, CONSTRUCTION, 010308 nuclear & particles physics, Física, topological branching fractions, RATIOS, Z-PEAK, τ lepton, Particle Physics - Experiment, Lepton
Abstract: Using data collected with the L3 detector at LEP from 1992 to 1995 on the Z peak, we determine the branching fractions of the τ lepton into one, three and five charged particles to be: B(τ → (1-prong)) = 85.274 ± 0.105 ± 0.073%, B(τ → (3-prong)) = 14.556 ± 0.105 ± 0.076%, B(τ → (5-prong)) = 0.170 ± 0.022 ± 0.026%. The first uncertainties are statistical and the second systematic. The accuracy of these measurements alone is similar to that of the current world average., Facultad de Ciencias Exactas
Published: 2001

50. Study of Z boson pair production in e+e− interactions at –202 GeV

Author: G. Mirabelli, H.F. Chen, K. Lübelsmeyer, A. Buffini, B. Zimmermann, F. Cesaroni, Konrad Deiters, W. J. Burger, Michael Dittmar, Y. Uchida, G. B. Mohanty, J. D. Swain, Alberto Aloisio, M.E. Sarakinos, A. Böhm, Zhenghao Xu, A. Lebedev, Dong-Chul Son, Dimitri Bourilkov, Minhong Wang, M. P. Sanders, B. L. Betev, G. Landi, V. Plyaskin, Lamberto Luminari, P. Spillantini, H. Anderhub, Pierre Lecomte, Werner Lustermann, M. Dierckxsens, J. Hirschfelder, Stefano Giagu, A. Malinin, B. Petersen, G. Ambrosi, Raffaello D'Alessandro, R. Leiste, Christoph Paus, F. C. Erné, M. Rescigno, L. Baksay, F. Cotorobai, X. W. Tang, H. K. Park, Mariagrazia Alviggi, P. A. Piroué, Leonardo Merola, P. Wienemann, G. Castellini, M. Chamizo, Alexei Raspereza, M. T. Dova, Georgi Sultanov, Simone Paoletti, E. Fiandrini, Gyorgy Vesztergombi, A. De Salvo, S. X. Wu, T. S. Dai, B. Musicar, Michele Guida, B. Smith, S. Braccini, A. J.M. Muijs, P. Bartalini, T. Angelescu, M. Kopal, Z. F. Gong, G. Forconi, M. Pohl, R. A. Khan, L. Tauscher, Jozsef Toth, A. Seganti, Harvey B Newman, Inkyu Park, J. Casaus, W.G. Ma, Tariq Aziz, M. Della Pietra, T. Sztaricskai, T. Azemoon, L. Malgeri, M. Steuer, K. Freudenreich, Z. A. Liu, A. Vorvolakos, Sw. Banerjee, Manjit Kaur, R. de Asmundis, I. Fisk, Claudio Luci, D. Pandoulas, E. Delmeire, S. S. Gau, D. Kim, U. K. Chaturvedi, M. Vivargent, Marcos Cerrada, An. Zalite, C. G. Yang, M. Chemarin, N. Cavallo, R. Barillère, S. Saremi, J. Pothier, Yu. Zalite, G. M. Chen, W. Kittel, M. A. Rahaman, D. Perret-Gallix, Francesco Conventi, B. P. Roe, S. Cucciarelli, Zhidong Zhang, C. Maña, Y. S. Lu, A. Oulianov, L. Lugnier, Marcella Diemoz, G. Grenier, H. El Mamouni, Roberto Battiston, Yu. Galaktionov, A. Arefiev, Crisostomo Sciacca, J.V. Allaby, Subir Sarkar, Marco Pieri, J. Alcaraz, S. V. Baldew, R. R. McNeil, S. Patricelli, J. A. van Dalen, Gerjan Bobbink, G. Schwering, Maurizio Biasini, D. O. Prokofiev, J. M. Le Goff, J. Yamamoto, B. Borgia, A. Shvorob, S. Reucroft, Jasper Kirkby, M. A. Falagan, M. Gataullin, J. Ulbricht, N. Gheordanescu, Marta Felcini, F. Brochu, D. della Volpe, Aleandro Nisati, B. Tellili, P. G. Rancoita, M. Zöller, Joseph Quartieri, Anna Katharina Kopp, E. Valente, B. N. Jin, Bz Yang, Oleg Fedin, J. A. Rubio, H. Nowak, D. Vicinanza, Max Weber, An.A. Vorobyov, Egidio Longo, S. Vlachos, G. Holzner, K. Riles, Francesco Becattini, D. Hatzifotiadou, Laszlo Boldizsar, M. Fabre, J. Rodin, G. Cara Romeo, J. H. Field, A. Mihul, O. Adriani, G. Alemanni, A. Stone, Mingming Yang, T. Niessen, Imad Baptiste Laktineh, Lucas Taylor, C. Li, I. Clare, F. Marzano, G. Coignet, W. Krenz, Aaron Dominguez, Felicitas Pauss, W. Wallraff, G. Viertel, S. Banerjee, S. C. Yeh, B. Stoyanov, Kajari Mazumdar, S. Schmidt-Kaerst, X. D. Cai, H. J. Yang, Hans J. Vogel, R. Ofierzynski, Samuel C.C. Ting, P. Le Coultre, G. Chiefari, M. Basile, S. Shevchenko, W. T. Lin, F. Behner, R. Ramelli, Ren-Yuan Zhu, D. Mangeol, M. N. Kienzle-Focacci, P. Duinker, K. Sudhakar, S. Likhoded, S. Costantini, Alessandra Doria, D. Luckey, Simonetta Gentile, M. W. Gruenewald, D.W. Schmitz, R. van Gulik, M. Pedace, S. Wynhoff, C. J.W.P. Timmermans, A. Csilling, M. von der Mey, I. Josa-Mutuberria, M. Kräber, P. Extermann, P. de Jong, N. Shivarov, Salvatore Mele, M. Musy, T. Paul, V. K. Gupta, A. Klimentov, M. Lebeau, Christoph Schäfer, H. Hofer, J. B. Ye, Robert Clare, A. Gurtu, L. J. Gutay, D. Kiss, K. L. Tung, R. Berbeco, Thomas Hebbeker, U. Becker, Gianpaolo Carlino, F. DeNotaristefani, Paul Lecoq, R. W. Kraemer, M. Napolitano, J. G. Branson, S. Villa, I. Duran, R. Ranieri, D. Duchesneau, H. S. Chen, A. Hasan, Ya Han Hu, Manas Maity, P. Raics, L. Servoli, G.S. Muanza, Davide Piccolo, H. Vogt, B. De La Cruz, P. Berges, S. N. Ganguli, F. J. Eppling, L. W. Jones, P. Lebrun, M. Pauluzzi, P. H. Fisher, A. Degré, Jeremy Mans, G. Zilizi, J. J. Blaising, H.J. Lee, S. M. Ting, P. Déglon, Speranza Falciano, M. Acciarri, Guo-Ming Chen, A. Bajo, D. Ren, A. M. Cartacci, A. C. König, F. L. Linde, Pàl Hidas, S. Bhattacharya, Xl Wang, G. Ruggiero, A. Chen, D. van Dierendonck, J. Salicio, I. Vetlitsky, A. Krüger, D. Dufournaud, A. Barczyk, C. H. Lin, V. Pojidaev, Adrian Biland, L. Z. Sun, C. Furetta, A. Straessner, Luca Lista, Igor Vorobiev, P. Levtchenko, Z. Szillasi, C. Palomares, Panos A Razis, Sabine Riemann, D. Prokofiev, Luisa Cifarelli, V. Koutsenko, I. Vodopianov, A. Engler, M. Capell, A. Favara, Zheng Wang, H. S. Fesefeldt, E. Pistolesi, A. Balandras, J. Berdugo, L. Bellucci, A. Rosca, E. J. Sanchez, Francesca Cavallari, Pierluigi Paolucci, J. P. Martin, P. Ladron de Guevara, G. Y. Zhu, E. Shumilov, V. Shoutko, Claudia Cecchi, J. K. Kim, C. Dionisi, Giovanni Passaleva, Pablo Garcia-Abia, Alain Hervé, A. Bay, Carlo Civinini, G. Raven, L. Xia, M. Aguilar-Benitez, O. Grimm, Herwig Schopper, H. Postema, A. Buijs, L. Romero, F. Pierella, Federico Cindolo, Riccardo Paramatti, M. Bourquin, A. Kunin, Joachim Mnich, Hafeez R Hoorani, P. Achard, S. C. Tonwar, W. J. Metzger, S. R. Hou, Frank Filthaut, Francesca Nessi-Tedaldi, M. Wadhwa, D. J. Schotanus, J. D. Burger, Thomas Ferguson, T. Siedenburg, G. Rahal-Callot, N. Raja, G. Marian, D. Haas, S. Pensotti, Valery Schegelsky, Antonino Zichichi, H. Suter, Ia Iashvili, H. Rykaczewski, Giovanni Organtini, Vladimir Andreev, H. Milcent, H. Wilkens, S. Rosier-Lees, Jean Fay, T. Moulik, D. P. Stickland, Y. H. Chang, Peter Denes, Paolo Bagnaia, S. C. Blyth, Marco Meschini, Christopher George Tully, Wolfgang Lohmann, B. Bertucci, F. Anselmo, Nicanor Colino, and A. C. Weber
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, 7. Clean energy, Standard Model, Nuclear physics, Cross section (physics), Pair production, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract: The cross section for the production of Z boson pairs is measured using the data collected by the L3 detector at LEP in 1999 in e^+e^- collisions at centre-of-mass energies ranging from 192 GeV up to 202 GeV. Events in all the visible final states are selected, measuring the cross section of this process. The special case of final states containing b quarks is also investigated. All results are in agreement with the Standard Model predictions.
Published: 2001

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