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Measurement of the Differential Cross Sections for Isolated Direct Photon Pair Production in $p \bar P$ Collisions at $\sqrt{s}

$Measurement of the Differential Cross Sections for Isolated Direct Photon Pair Production in $p \bar P$ Collisions at $\sqrt{s} PDF$ Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 10

Book Description

Measurement of the Differential Cross Sections for Isolated Direct Photon Pair Production in $p \bar P$ Collisions at $\sqrt{s}

Book Description

Measurement of the Cross Section for Prompt Isolated Diphoton Production in $p\bar{p}$ Collisions at \sqrt S

$Measurement of the Cross Section for Prompt Isolated Diphoton Production in $p\bar{p}$ Collisions at \sqrt S PDF$ Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 8

Book Description
This article reports a measurement of the cross section of prompt isolated photon pair production in p{bar p} collisions at a total energy √s = 1.96 TeV using data of 5.36 fb−1 integrated luminosity collected with the CDF II detector at the Fermilab Tevatron. The measured cross section, differential in basic kinematic variables, is compared with three perturbative QCD predictions, a leading order (LO) parton shower calculation and two next-to-leading order (NLO) calculations. The NLO calculations reproduce most aspects of the data. By including photon radiation from quarks before and after hard scattering, the parton shower prediction becomes competitive with the NLO predictions.

Measurement of Differential Cross Sections for the Production of a Pair of Isolated Photons in Pp Collisions at $$\sqrt{s}

$Measurement of Differential Cross Sections for the Production of a Pair of Isolated Photons in Pp Collisions at $$\sqrt{s} PDF$ Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 3170

Book Description
A measurement of differential cross sections for the production of a pair of isolated photons in proton-proton collisions at $\sqrt{s}=7\, \text {TeV} $ is presented. The data sample corresponds to an integrated luminosity of 5.0 $\, \text {fb}^{-1}$ collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25 $\, \text {GeV}$ respectively, in the pseudorapidity range $

Measurement of the Production Cross Section for Pairs of Isolated Photons in Pp Collisions at Sqrt(s)

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 38

Book Description
The integrated and differential cross sections for the production of pairs of isolated photons is measured in proton-proton collisions at a centre-of-mass energy of 7 TeV with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 36 inverse picobarns is analysed. A next-to-leading-order perturbative QCD calculation is compared to the measurements. A discrepancy is observed for regions of the phase space where the two photons have an azimuthal angle difference, $\Delta(\phi)$, less than approximately 2.8.

Measurement of the Inclusive-Isolated Prompt-Photon Cross Section in $p\bar{p}$ Collisions Using the Full CDF Data Set

$Measurement of the Inclusive-Isolated Prompt-Photon Cross Section in $p\bar{p}$ Collisions Using the Full CDF Data Set PDF$ Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

Book Description
A measurement of the inclusive production cross section of isolated prompt photons in proton-antiproton collisions at center-of-mass energy $\sqrt{s}$=1.96TeV is presented. The results are obtained using the full Run II data sample collected with the Collider Detector at the Fermilab Tevatron, which corresponds to an integrated luminosity of 9.5fb$^{-1}$. The cross section is measured as a function of photon transverse energy, $E_T^{\gamma}$, in the range 30$

Measurement of the Inclusive Isolated Prompt Photon Cross Section in $p\bar{p}$ Collisions at $\sqrt{s}

$Measurement of the Inclusive Isolated Prompt Photon Cross Section in $p\bar{p}$ Collisions at $\sqrt{s} PDF$ Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

Book Description
The measurement of the cross section for the inclusive production of isolated prompt photons in proton-antiproton collisions at $\sqrt{s}$=1.96~TeV is presented. The data set corresponds to an integrated luminosity of 9.5~fb$^{-1}$, collected with the Collider Detector at Fermilab in Run~II. The measurement is performed as a function of the photon transverse energy ($E_T^{\gamma}$) covering the range of 30~GeV$

Measurement of the B Meson Differential Cross-section in P[bar P] Collisions At[radical]

Author:
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ISBN:
Category :
Languages : en
Pages :

Book Description
This paper presents a direct measurement of the differential[ital B][sup+] and[ital B][sup 0] cross sections, [ital d[sigma]/dp[sub T]] in[ital p][ital[anti p]] collisions at[radical]s= 1.8 TeV using a sample of 74[ital pb][sup -1] accumulated by the Collider Detector at Fermilab (CDF). The cross sections are measured in the central pseudorapidity region[vert-bar][eta][vert-bar][lt] 1 for[ital p[sub T]]([ital B])[gt] 6.0 GeV/c by fully reconstructing the[ital B] meson decays[ital B][sup+][r-arrow][ital J/[psi]K[sup+]] and[ital B][sup 0][r-arrow][ital J/[psi]K[sup*0]](892), where[ital J/[psi]][r-arrow][mu][sup+][mu][sup -] and[ital K][sup*0][r-arrow][ital K][sup+][pi][sup -]. The prediction of next-to- leading order QCD is consistent with the shape of the differential cross section but is low by a factor of 2.1[+-]0.2[+-]0.3. The integrated[ital B] meson cross section for[ital p[sub T]]([ital B])[gt] 6.0 GeV/c is determined to be[sigma]([ital B][sup -]= 3. 54[+-]0.22[+-]0.53[mu][ital b].

Measurement of the Diphoton Differential Cross-section in P[bar P] Collisions at [square Root] S

Author: Joshua Marc Dyer
Publisher:
ISBN:
Category : Differential cross sections
Languages : en
Pages : 202

Book Description

Fiducial Cross-section Measurements of the Production of a Prompt Photon in Association with a Top-quark Pair at √s

Author: Joshua Wyatt Smith
Publisher:
ISBN:
Category :
Languages : en
Pages :

Book Description
The cross sections for top-quark pair production in association with a photon are measured in a fiducial volume with the ATLAS detector at a centre-of-mass energy of 13 TeV. Results are presented using proton-proton collision data collected by the LHC during 2015 and 2016, amounting to a total of 36.1 fb$^{-1}$. This also presents the first $t\bar{t}\gamma$ cross-section measurements performed in the dilepton channels. Exactly one photon is required to have $p_{\text{T}} > 20$ GeV and be isolated based on track and calorimeter information. At least two (four) jets are required in the dilept...

Measurements of the Differential Cross Sections for the Inclusive Production of a Photon and Heavy Flavor Jet

Author: Daniel J. Duggan
Publisher:
ISBN:
Category :
Languages : en
Pages :

Book Description
ABSTRACT: This thesis presents the first measurement of the differential production cross section of a heavy flavor (bottom or charm) jet and direct photon at the Fermilab Tevatron. These measurements were performed using data recorded with the D0 detector from proton-antiproton collisions at a center of mass energy of sqrt(s) = 1.96 TeV. These results probe a kinematic range for the photon transverse momentum of 30 to 150 GeV and photon rapidity y