Download or read book Measurement of Diffractive Dissociation Cross Sections in math Display written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of diffractive dissociation cross sections in pp collisions at √s=7 TeV are presented in kinematic regions defined by the masses MX and MY of the two final-state hadronic systems separated by the largest rapidity gap in the event. Differential cross sections are measured as a function of [xi]X=M2X/s in the region -5.5 log10[xi]X -2.5, for log10MY 0.5, dominated by single dissociation (SD), and 0.5

Download or read book Measurement of Diffraction Dissociation Cross Sections in Pp 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: Measurements of diffractive dissociation cross sections in pp collisions at √s=7 TeV are presented in kinematic regions defined by the masses MX and MY of the two final-state hadronic systems separated by the largest rapidity gap in the event. The differential cross sections are measured as a function of ?X = M2X /s in the region -5.5 logsub10/sub?subX/sub -2.5, for logsub10/subMsubY/sub 0.5, dominated by single dissociation (SD), and 0.5 log10MsubY/sub 1.1, dominated by double dissociation (DD), where MsubX/sub and MsubY/sub are given in GeV. The inclusive pp cross section is also measured as a function of the width of the central pseudorapidity gap ?? for ?? 3, logsub10/sub MsubX/sub 1.1, and logsub10/subMsubY/sub 1.1, a region dominated by DD. The cross sections integrated over these regions are found to be, respectively, 2.99 ± 0.02(stat)sup+0.32/supsub-0.29/sub(syst) mb, 1.18 ± 0.02(stat) ± 0.13(syst) mb, and 0.58 ± 0.01(stat)sup+0.13/supsub-0.11/sub(syst) mb, and are used to extract extrapolated total SD and DD cross sections. In addition, the inclusive differential cross section, d?/d??supF/sup, for events with a pseudorapidity gap adjacent to the edge of the detector, is measured over ??

Download or read book Differential Cross Sections and Recoil Polarizations for the Reaction math Display written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, high-statistics measurements of differential cross sections and recoil polarizations for the reaction $\gamma p \rightarrow K^+ \Sigma^0$ have been obtained using the CLAS detector at Jefferson Lab. We cover center-of-mass energies ($\sqrt{s}$) from 1.69 to 2.84 GeV, with an extensive coverage in the $K^+$ production angle. Independent measurements were made using the $K^{+}p\pi^{-}$($\gamma$) and $K^{+}p$($\pi^-, \gamma$) final-state topologies, and were found to exhibit good agreement. Our differential cross sections show good agreement with earlier CLAS, SAPHIR and LEPS results, while offering better statistical precision and a 300-MeV increase in $\sqrt{s}$ coverage. Above $\sqrt{s} \approx 2.5$ GeV, $t$- and $u$-channel Regge scaling behavior can be seen at forward- and backward-angles, respectively. Our recoil polarization ($P_\Sigma$) measurements represent a substantial increase in kinematic coverage and enhanced precision over previous world data. At forward angles we find that $P_\Sigma$ is of the same magnitude but opposite sign as $P_\Lambda$, in agreement with the static SU(6) quark model prediction of $P_\Sigma \approx -P_\Lambda$. This expectation is violated in some mid- and backward-angle kinematic regimes, where $P_\Sigma$ and $P_\Lambda$ are of similar magnitudes but also have the same signs. In conjunction with several other meson photoproduction results recently published by CLAS, the present data will help constrain the partial wave analyses being performed to search for missing baryon resonances.

Download or read book Measurement of the Elastic Total and Diffraction Cross Sections at Tevatron Energies written by and published by . This book was released on 1993 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CDF collaboration has measured the differential elastic cross section d?{sub el}/dt, the single diffraction dissociation double differential cross section d2?{sub sd}/dM2dt and the total inelastic cross section for antiproton-proton collisions at center of mass energies √s = 546 and 1,800 GeV. Data for this measurement have been collected in short dedicated runs during the 1988--1989 data taking period of CDF. The elastic scattering slope is 15.28 ± 0.58 (16.98 ± 0.25) GeV−2 at √s = 546 (1,800) GeV. Using the luminosity independent method (1 +?2)?{sub T} is measured to be 62.64 ± 0.95 (81.83 ± 2.29) mb at √s = 546 (1,800) GeV. Assuming? = 0.15 the elastic, total and single diffraction cross sections are?{sub el} = 12.87 ± 0.30,?{sub T} = 61.26 ± 0.93 and?{sub sd} = 7.89 ± 0.33 mb (?{sub el} = 19.70 ± 0.85,?{sub T} = 80.03 ± 2.24 and?{sub sd} = 9.46 ± 0.44 mb) at √s = 546 (1,800) GeV.

Download or read book Measurement of the Elastic Total and Single Diffraction Cross Sections at Tevatron Energies written by and published by . This book was released on 1993 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: CDF collaboration has measured the differential elastic cross section d?{sub el}/dt, the single diffraction dissociation double differential cross section d2?{sub sd}/dM2dt and the total inelastic cross section in antiproton-proton collisions at center of mass energies √s=546 and 1800 GeV. The elastic scattering slope is 15.28±0.58 (16.98±0.25) GeV−2 at √s = 546 (1800) GeV. Using the luminosity independent method, (1 +?2)?{sub T} is measured to be 62.64±0.95 (81.83±2.29) mb at √s = 546 (1800) GeV. Assuming? = 0.15, the elastic, total and signal diffraction cross sections are?{sub el} = 12.87±0.30,?{sub T} = 61.26±0.93 and?{sub sd} = 7.89±0.33 mb (?{sub el} = 19.70±0.85,?{sub T} = 80.03±2.24 and?{sub sd} = 9.46±0.44 mb) at 546 (1800) GeV.

Download or read book Measurement of Single Diffractive Defferential Cross Section d t at Sqr s written by Arnab Kumar Pal and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis described in this dissertation uses the Forward Proton Detectors (FPD) installed at the D0 detector in the Tevatron collider at Fermilab to measure the single diffractive differential cross section (dð/(dıtı)) at sqr(s) = 1:96 TeV center of mass energy. The single diffractive events were selected using the DØ central detector and the FPD system and ı t ı of the forward proton are measured using the FPD system. The analysis presents the measurement of the differential cross section of the single diffractive events as a function of ı t ı in the range 0:2

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-06 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Diffractive Contribution to the DIS Cross Section Using the ZEUS Forward Plug Calorimeter written by Florian Goebel and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurements of Dijet Cross Sections in Diffractive Photoproduction and Deep Inelastic Scattering at HERA written by Sebastian Schätzel and published by . This book was released on 2004 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of the Single Diffractive Differential Cross Section d sigma d tau at sqrt s written by and published by . This book was released on 2011 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis described in this dissertation uses the Forward Proton Detectors(FPD) installed at the DØ detector in Tevatron collider at Fermilab to measure the single diffractive differential cross section d[sigma]/d.

Download or read book Differential Cross Sections for the Reactions math Display written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In high-statistics differential cross sections for the reactions [gamma] p -> p [eta] and [gamma] p -> p [eta]' the CLAS at Jefferson Lab was used to measure the center-of-mass energies from near threshold up to 2.84 GeV. The eta-prime results are the most precise to date and provide the largest energy and angular coverage. The eta measurements extend the energy range of the world's large-angle results by approximately 300 MeV. These new data, in particular the [eta]' measurements, are likely to help constrain the analyses being performed to search for new baryon resonance states.

Download or read book Measurements of Dijet Cross Sections in Diffractive Photoproduction and Deep Inelastic Scattering at HERA written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements are presented of differential dijet cross sections in low |t| diffractive ep collisions of the type ep->eXY, in which the photon dissociation system X is separated from a leading low mass baryonic system Y by a large rapidity gap. The measurements are based on an integrated luminosity of 18/pb. Dijet events are identified using the inclusive kt cluster algorithm. The cross sections are corrected to the level of stable hadrons and are measured in the kinematic region Q^20.01 GeV^2 (photoproduction) or 4Q^2

Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1977 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book INIS Atomindeks written by and published by . This book was released on 1985 with total page 1708 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1978 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.

Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt: