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Search For Massive Penetrating Particles Produced In High Energy Proton Nucleus Collisions
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Book Synopsis Search for Massive Penetrating Particles Produced in High Energy Proton-nucleus Collisions by : Joseph Paul Curry
Download or read book Search for Massive Penetrating Particles Produced in High Energy Proton-nucleus Collisions written by Joseph Paul Curry and published by . This book was released on 1975 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Penetrating Massive Neutral Particles Produced in High Energy Proton Collisions by :
Download or read book Search for Penetrating Massive Neutral Particles Produced in High Energy Proton Collisions written by and published by . This book was released on 1976 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nuclear Physics by : National Research Council
Download or read book Nuclear Physics written by National Research Council and published by National Academies Press. This book was released on 1999-03-31 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dramatic progress has been made in all branches of physics since the National Research Council's 1986 decadal survey of the field. The Physics in a New Era series explores these advances and looks ahead to future goals. The series includes assessments of the major subfields and reports on several smaller subfields, and preparation has begun on an overview volume on the unity of physics, its relationships to other fields, and its contributions to national needs. Nuclear Physics is the latest volume of the series. The book describes current activity in understanding nuclear structure and symmetries, the behavior of matter at extreme densities, the role of nuclear physics in astrophysics and cosmology, and the instrumentation and facilities used by the field. It makes recommendations on the resources needed for experimental and theoretical advances in the coming decade.
Book Synopsis Strangeness Production in High Energy Proton-nucleus Collision by :
Download or read book Strangeness Production in High Energy Proton-nucleus Collision written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results on strange particles produced by high energy protons on nuclear targets are reviewed. Topics included are inclusive cross- sections, A-dependence, particle ratios and production polarization of hyperons. 49 refs., 41 figs., 1 tab.
Book Synopsis Search for Decays of Stopped Long-lived Particles Produced in Proton-proton Collisions at [arrow]" by :
Download or read book Search for Decays of Stopped Long-lived Particles Produced in Proton-proton Collisions at [arrow]" written by and published by . This book was released on 2015 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Decays of Stopped Long-lived Particles Produced in Proton-proton Collisions at $\sqrt{s} by :
Download or read book Search for Decays of Stopped Long-lived Particles Produced in Proton-proton Collisions at $\sqrt{s} written by and published by . This book was released on 2015 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search has been performed for long-lived particles that could have come to rest within the CMS detector, using the time intervals between LHC beam crossings. The existence of such particles could be deduced from observation of their decays via energy deposits in the CMS calorimeter appearing at times that are well separated from any proton-proton collisions. Using a data set corresponding to an integrated luminosity of 18.6 fb-1 of 8 TeV proton-proton collisions, and a search interval corresponding to 281 h of trigger livetime, 10 events are observed, with a background prediction of 13.2+3.6 -2.5 events. Limits are presented at 95 % confidence level on gluino and top squark production, for over 13 orders of magnitude in the mean proper lifetime of the stopped particle. Assuming a cloud model of R-hadron interactions, a gluino with mass ≤1000 GeV and a top squark with mass ≤525 GeV are excluded, for lifetimes between 1 μs and 1000 s. Finally, these results are the most stringent constraints on stopped particles to date.
Book Synopsis Resonance Production in High Energy Collisions from Small to Big Systems by : Klaus Werner
Download or read book Resonance Production in High Energy Collisions from Small to Big Systems written by Klaus Werner and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this paper is to understand resonance production (and more generally particle production) for different collision systems, namely proton-proton (pp), proton-nucleus (pA), and nucleus-nucleus (AA) scattering at the LHC. We will investigate in particular particle yields and ratios versus multiplicity, using the same multiplicity definition for the three different systems, in order to analyse in a compact way the evolution of particle production with the system size and the origin of a very different system size dependence of the different particles.
Book Synopsis Search for Long-lived Charged Particles in Proton-proton Collisions at [math Display by :
Download or read book Search for Long-lived Charged Particles in Proton-proton Collisions at [math Display written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented of a search for heavy stable charged particles produced in proton-proton collisions at √s = 13 TeV using a data sample corresponding to an integrated luminosity of 2.5 fb-1 collected in 2015 with the CMS detector at the CERN LHC. The search is conducted using signatures of anomalously high energy deposits in the silicon tracker and long time-of-flight measurements by the muon system. The data are consistent with the expected background, and upper limits are set on the cross sections for production of long-lived gluinos, top squarks, tau sleptons, and lepton-like long-lived fermions. These upper limits are equivalently expressed as lower limits on the masses of new states; the limits for gluinos, ranging up to 1610 GeV, are the most stringent to date. Furthermore, limits on the cross sections for direct pair production of long-lived tau sleptons are also determined.
Book Synopsis A Search for Weakly-interacting Neutral Particles Produced in 450 GeV/c Proton-nucleus Collisions by : Jeremy Robert Dodd
Download or read book A Search for Weakly-interacting Neutral Particles Produced in 450 GeV/c Proton-nucleus Collisions written by Jeremy Robert Dodd and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for W' {u2192} Tb in Proton-proton Collisions at $ \sqrt{s} by :
Download or read book Search for W' {u2192} Tb in Proton-proton Collisions at $ \sqrt{s} written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for dark matter particles directly produced in proton-proton collisions recorded by the CMS experiment at the LHC is presented. The data correspond to an integrated luminosity of 18.8 inverse femtobarns, at a center-of-mass energy of 8 TeV. The event selection requires at least two jets and no isolated leptons. The razor variables are used to quantify the transverse momentum balance in the jet momenta. The study is performed separately for events with and without jets originating from b quarks. The observed yields are consistent with the expected backgrounds and, depending on the nature of the production mechanism, dark matter production at the LHC is excluded at 90% confidence level for a mediator mass scale Lambda below 1 TeV. The use of razor variables yields results that complement those previously published.
Book Synopsis Search for Monotop Signatures in Proton-Proton Collisions at $\sqrt S by :
Download or read book Search for Monotop Signatures in Proton-Proton Collisions at $\sqrt S written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented from a search for new decaying massive particles whose presence is inferred from an imbalance in transverse momentum and which are produced in association with a single top quark that decays into a bottom quark and two light quarks. The measurement is performed using 19.7 fb-1 of data from proton-proton collisions at a center-of-mass energy of 8 TeV, collected with the CMS detector at the CERN LHC. No deviations from the standard model predictions are observed and lower limits are set on the masses of new invisible bosons. In particular, scalar and vector particles, with masses below 330 and 650 GeV, respectively, are excluded at 95% confidence level, thereby substantially extending a previous limit published by the CDF Collaboration.
Book Synopsis On the Production of Hadrons with Large Transverse Momenta in High-energy Proton-proton and Proton-nucleus Collisions by : Sverker Fredericksson
Download or read book On the Production of Hadrons with Large Transverse Momenta in High-energy Proton-proton and Proton-nucleus Collisions written by Sverker Fredericksson and published by . This book was released on 1976 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-03 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Particle Production in High Energy Nucleus-nucleus Collisions by : Reinhard Stock
Download or read book Particle Production in High Energy Nucleus-nucleus Collisions written by Reinhard Stock and published by . This book was released on 1986 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for Dark Particles Produced in Association with the Z Boson and Jets in 13 TeV Proton-Proton Collisions by : Bobak Taleb Hashemi
Download or read book A Search for Dark Particles Produced in Association with the Z Boson and Jets in 13 TeV Proton-Proton Collisions written by Bobak Taleb Hashemi and published by . This book was released on 2018 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the results of a search for new physics in proton-proton collisions at the Large Hadron Collider, running with 13 TeV center of mass energy, using data gathered by the Compact Muon Solenoid (CMS). The search targets TeV mass-scale dark matter candidates and uses final states with two opposite-charge and same-flavor light leptons (electrons or muons) having dilepton mass consistent with the Z boson, at least 2 hadronic jets, and at least 100 GeV of transverse momentum imbalance. The thesis contains a historical introduction to particle physics, brief reviews of the standard model and supersymmetry, an in-depth discussion of the acquisition of data by the Large Hadron Collider and CMS detector, and a pedagogical overview of the analysis methods used. No statistically significant deviation is found from the expected standard model background. The search results are presented and interpreted in the context of several simplified models of supersymmetry, including a model of Gauge Mediated Supersymmetry-Breaking (GSMB) with gluino production and models with Electroweakino production. The excluded mass ranges for these models are advanced by approximately 50-100% with respect to the best previous searches. This work represents the current state of the art for their exclusion.
Book Synopsis Search for Long-lived Neutral Particles Decaying to Quark-antiquark Pairs in Proton-proton Collisions at {u221A}s by :
Download or read book Search for Long-lived Neutral Particles Decaying to Quark-antiquark Pairs in Proton-proton Collisions at {u221A}s written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A search is performed for long-lived massive neutral particles decaying to quark-antiquark pairs. The experimental signature is a distinctive topology of a pair of jets, originating at a secondary vertex. Events were collected with the CMS detector at the CERN LHC in proton-proton collisions at a center-of-mass energy of 8 TeV. The data analyzed correspond to an integrated luminosity of 18.5 fb–1. No significant excess is observed above standard model expectations. Upper limits at 95% confidence level are set on the production cross section of a heavy neutral scalar particle, H, in the mass range of 200 to 1000 GeV, decaying promptly into a pair of long-lived neutral X particles in the mass range of 50 to 350 GeV, each in turn decaying into a quark-antiquark pair. For X with mean proper decay lengths of 0.4 to 200 cm, the upper limits are typically 0.5–200 fb. The results are also interpreted in the context of an R-parity-violating supersymmetric model with long-lived neutralinos decaying into a quark-antiquark pair and a muon. For pair production of squarks that promptly decay to neutralinos with mean proper decay lengths of 2–40 cm, the upper limits on the cross section are typically 0.5–3 fb. As a result, the above limits are the most stringent on these channels to date.
Book Synopsis Experimental Techniques in Nuclear and Particle Physics by : Stefaan Tavernier
Download or read book Experimental Techniques in Nuclear and Particle Physics written by Stefaan Tavernier and published by Springer Science & Business Media. This book was released on 2010-02-06 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: I have been teaching courses on experimental techniques in nuclear and particle physics to master students in physics and in engineering for many years. This book grew out of the lecture notes I made for these students. The physics and engineering students have rather different expectations of what such a course should be like. I hope that I have nevertheless managed to write a book that can satisfy the needs of these different target audiences. The lectures themselves, of course, need to be adapted to the needs of each group of students. An engineering student will not qu- tion a statement like “the velocity of the electrons in atoms is ?1% of the velocity of light”, a physics student will. Regarding units, I have written factors h and c explicitly in all equations throughout the book. For physics students it would be preferable to use the convention that is common in physics and omit these constants in the equations, but that would probably be confusing for the engineering students. Physics students tend to be more interested in theoretical physics courses. However, physics is an experimental science and physics students should und- stand how experiments work, and be able to make experiments work. This is an open access book.
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