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International Europhysics Conference on HEP PROCEEDINGS Measurement and QCD Interpretation of the Deep Inelastic ep Scattering Cross Section by H1
"... Abstract: Recent H1 cross section measurements at low x and Q2 are reported as well as analysis results regarding the behaviour of the proton structure function F2(x, Q2)andof the longitudinal proton structure function FL(x, Q2)atlowxas well as the measurement of the gluon distribution and of the st ..."
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Abstract: Recent H1 cross section measurements at low x and Q2 are reported as well as analysis results regarding the behaviour of the proton structure function F2(x, Q2)andof the longitudinal proton structure function FL(x, Q2)atlowxas well as the measurement of the gluon distribution and of the strong coupling constant αs. 1. Data Sets The H1 collaboration recently reported precision measurements [1] of the inclusive deepinelastic ep scattering cross section in the kinematic range 1.5 ≤ Q 2 ≤ 150 GeV 2 and 3 · 10 −5 ≤ x ≤ 0.2. The data were recorded with the H1 Figure 1: The structure function F2 versus x in the low Q 2 ≤ 12 GeV 2 region. detector at HERA in 1996 and 1997, and correspond to an integrated luminosity of 20 pb −1. The total uncertainty in the “bulk” region of this data is 35 % for Q 2 ≃ 5 − 50 GeV 2. This level of precision is now comparable to the precision of the fixed target measurements. New, preliminary results based on 3 pb −1 of data taken in 1999 with increased proton beam energy Ep = 920 GeV and improved instrumentation in the backward region of the H1 detector yield even more precise measurements at low 1.5 <Q 2 <12 GeV 2 and low 2·10 −5 ≤ x<0.07 and extend the phase space towards high y ≃ 0.89 allowing the longitudinal structure function FL to be accessed at low Q 2 in a widened x range. Further preliminary results based on 1997 data with an initial
’ ˜ QCD
, 1997
"... Several supersymmetry breaking mechanisms do not produce dimension3 operators. I show here that this scenario is consistent with present observations and has several significant virtues: i) When there are no dimension3 SUSYbreaking operators there is no SUSYCP problem. ii) SUSYbreaking need not ..."
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” flavor 2 singlet pseudoscalar in the ι(1440) region which has been observed in several experiments is naturally interpreted as the mainly˜g˜g bound state which gets its mass via the QCD anomaly.
QCD Corrections and the Leptoquark Interpretation
, 1997
"... The excess of high–Q 2 events found by H1 and ZEUS at HERA in e + p deepinelastic scattering above the Standard Model prediction motivates us to calculate the NLO QCD corrections to the HERA scalar leptoquark (or squark) production cross sections. We find that the corrections are significant, of or ..."
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The excess of high–Q 2 events found by H1 and ZEUS at HERA in e + p deepinelastic scattering above the Standard Model prediction motivates us to calculate the NLO QCD corrections to the HERA scalar leptoquark (or squark) production cross sections. We find that the corrections are significant
CALCULATION AND INTERPRETATION OF HADRON CORRELATION FUNCTIONS IN LATTICE QCD*
, 1994
"... Several new developments in the calculation and interpretation of hadron densitydensity correlation functions are presented. The asymptotic behavior of correlation functions is determined from a tree diagram path integral. A method is developed to use this behavior to correct for leading image contr ..."
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Several new developments in the calculation and interpretation of hadron densitydensity correlation functions are presented. The asymptotic behavior of correlation functions is determined from a tree diagram path integral. A method is developed to use this behavior to correct for leading image
QCD: THEORETICAL DEVELOPMENTS
"... I review recent theoretical advances in quantum chromodynamics. Particular emphasis is put on developments related to the precise prediction and interpretation of experimental data from present and future high energy colliders. ..."
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I review recent theoretical advances in quantum chromodynamics. Particular emphasis is put on developments related to the precise prediction and interpretation of experimental data from present and future high energy colliders.
Strangeness and Statistical QCD
, 2001
"... We discuss properties of statistical QCD relevant in Fermi phase space model analysis of strange hadron production experimental data. We argue that the analysis results interpreted using established statistical QCD properties are demonstrating formation of the color deconfined state of matter in rel ..."
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We discuss properties of statistical QCD relevant in Fermi phase space model analysis of strange hadron production experimental data. We argue that the analysis results interpreted using established statistical QCD properties are demonstrating formation of the color deconfined state of matter
The confining branch of QCD
"... We show that, as a consequence of a physical interpretation based on the Abelian projection and on the QCD string, fourdimensional QCD confines the electric flux if and only if the functional integral in the fiberwisedual variables admits a hyperKahler reduction under the action of the gauge grou ..."
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We show that, as a consequence of a physical interpretation based on the Abelian projection and on the QCD string, fourdimensional QCD confines the electric flux if and only if the functional integral in the fiberwisedual variables admits a hyperKahler reduction under the action of the gauge
Probing the QCD Equation of State ∗
, 2002
"... We propose a novel quasiparticle interpretation of the equation of state of deconfined QCD at finite temperature. Using appropriate thermal masses, we introduce a phenomenological parametrisation of the onset of confinement in the vicinity of the phase transition. Lattice results of bulk thermodynam ..."
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We propose a novel quasiparticle interpretation of the equation of state of deconfined QCD at finite temperature. Using appropriate thermal masses, we introduce a phenomenological parametrisation of the onset of confinement in the vicinity of the phase transition. Lattice results of bulk
QCD in Nuclear Collisions
, 2002
"... The relationship between RHIC and HERA data is explored using the idea of saturation (color glass condensate) as a unifying framework for interpretation. A description of the early stages of a heavy ion collision is given consistent with the RHIC results. The relevant QCD dynamics at the various sta ..."
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The relationship between RHIC and HERA data is explored using the idea of saturation (color glass condensate) as a unifying framework for interpretation. A description of the early stages of a heavy ion collision is given consistent with the RHIC results. The relevant QCD dynamics at the various
Results 1  10
of
684