Author: Michael B. Anderson
Publisher:
ISBN:
Category :
Languages : en
Pages : 106

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Book Description

Author: Cecilia E. Gerber
Publisher:
ISBN:
Category :
Languages : en
Pages : 5

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Book Description
The authors present recent results on high p{sub T} jets and photon production in {bar p}p collisions at a center of mass energy of 1.96 TeV. The measurements were performed by the CDF and D0 collaborations using between 150 and 300 pb{sup -1} of data taken during Run II at the Tevatron.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 216

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Book Description
A model-independent signature-based search for physics beyond the Standard Model is performed in the photon~+ jets~+ missing transverse energy channel in \ppbar collisions at a center of mass energy of 1.96 TeV using the CDF II detector. Events with a photon + jets are predicted by the Standard Model and also by many theoretical models beyond the Standard Model. In the Standard Model, the main mechanisms for photon~+ jets production include quark-antiquark annihilation and quark-gluon scattering. No intrinsic missing transverse energy is present in any of these Standard Model processes. In this search, photon~+ $\geq$1 jet and photon~+ $\geq$2 jet events are analyzed with and without a minimum requirement on the missing transverse energy. Numerous mass distributions and kinematic distributions are studied and no significant excess over the background prediction is found. All results indicate good agreement with expectations of the Standard Model.

Author: Cary J. Zeitlin
Publisher:
ISBN:
Category :
Languages : en
Pages : 348

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Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 4

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Book Description
Prompt photon production results by the CDF and D0 Collaborations in the Tevatron Run II at a center of mass energy of (square root)s = 1.96 TeV are presented. Cross sections for central isolated photons, photon+jet production and photons produced in association with a heavy flavor quark are reported. The measurements are compared to Next-to-Leading order perturbative QCD predictions.

Author: Samantha K. Hewamanage
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
A model-independent signature-based search for physics beyond the Standard Model is performed in the photon + jets + missing transverse energy channel in proton-antiproton collisions at a center of mass energy of 1.96 TeV using the CDF II detector. Events with a photon + jets are predicted by the Standard Model and also by many theoretical models beyond the Standard Model. In the Standard Model, the main mechanisms for photon + jets production include quark-antiquark annihilation and quark-gluon scattering. No intrinsic missing transverse energy is present in any of these Standard Model processes. In this search, photon + [greater-than or equal to] 1 jet and photon + [greater-than or equal to] 2 jet events are analyzed with and without a minimum requirement on the missing transverse energy. Numerous mass distributions and kinematic distributions are studied and no significant excess over the background prediction is found. All results indicate good agreement with expectations of the Standard Model.

Author: Steven A. Jerger
Publisher:
ISBN:
Category : Photons
Languages : en
Pages : 392

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Book Description

Author: You-Hao Chang
Publisher: Springer
ISBN: 9811038244
Category : Science
Languages : en
Pages : 107

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Book Description
This book mainly focuses on the study of photon + 3 jets final state in Proton-Proton Collisions at √s = 7TeV, searching for patterns of two (or more) distinct hard scatterings in the same collision, i.e the so-called Double Parton Scattering (DPS). A new method by using Monte Carlo generators was performed and provides higher order corrections to the description of the Single Parton Scattering (SPS) background. Further it is investigated whether additional contributions from DPS can improve the agreement between the measured data and the Monte Carlo predictions. The current theoretical uncertainties related to the SPS background are found to be larger than expectation. At the same time a rich set of DPS-sensitive measurements is reported for possible further interpretation.

Author: Harry W K Cheung
Publisher: World Scientific
ISBN: 9814483516
Category : Science
Languages : en
Pages : 575

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Book Description
This volume contains contributions to the XXI International Symposium on Lepton and Photon Interactions at High Energies, held at the Fermi National Accelerator Laboratory. It gives up-to-date reviews of all aspects of particle physics, written by leading practitioners in the field. The review nature of all the articles makes this volume more accessible to students and researchers in other fields of physics. In addition to new experimental data and advances in theory, the future directions and prospects for the field are covered.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences

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

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Book Description
We study the process of associated photon and jet production, p+pbar --> photon + jet + X, using 8.7 fb^-1 of integrated luminosity collected by the D0 detector at the Fermilab Tevatron Collider at a center-of-mass energy sqrt{s}=1.96 TeV. Photons are reconstructed with rapidity