Physical Process in Gaseous Nebulae
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1945 |
Genre | : |
ISBN | : |
Download Physical Process in Gaseous Nebulae Book in PDF, ePub and Kindle
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Hard Diffraction And Rapidity Gaps PDF full book. Access full book title Hard Diffraction And Rapidity Gaps.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1945 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1994 |
Genre | : |
ISBN | : |
Author | : Vittorio Del Duca |
Publisher | : |
Total Pages | : |
Release | : 1995 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 18 |
Release | : 1997 |
Genre | : |
ISBN | : |
Preliminary results on jet production with rapidity gaps in p{anti p} collisions are presented for both D0 and CDF. An excess of events with a forward rapidity gap is observed at both (square root)s=1800 GeV and 630 GeV, consistent with a hard single diffractive process. The first evidence for diffractive W production is presented. A class of events with two forward gaps and central dijets is observed at (square root)s=1800 GeV, a topology that is consistent with hard double pomeron exchange. Kinematic properties of events containing rapidity gaps are measured.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1999 |
Genre | : |
ISBN | : |
We review published rapidity gap results on diffractive W and dijet production and discuss new results on diffractive b and J/[psi] production. The diffractive structure function of the proton obtained from Roman pot dijet data is presented and com- pared with expectations based on the diffractive parton densities extracted from DIS at HERA. Also presented are results on dijet production in double Pomeron exchange. Finally, we review hard double-diffractive results (rapidity gaps between jets) and present new results on soft double diffraction.
Author | : |
Publisher | : |
Total Pages | : 13 |
Release | : 1996 |
Genre | : |
ISBN | : |
We present new evidence for events with a rapidity gap between jets in {bar p}-p collisions at (square root)s = 1.8 TeV based on data collected by triggering the Collider Detector at Fermilab on two high transverse momentum forward jets and results of a search for diffractive W" and dijet production where diffraction is tagged by the rapidity gap technique. We also present the results of a search for diffractive dijets using data collected by triggering on a very forward particle in the recently installed roman-pot detectors. The dijet events exhibit additional diffractive characteristics such as rapidity gaps and boosted center of mass system, however the recoil antiproton measured in the roman-pots is in a regime in which the non- pomeron contribution is significant.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2005 |
Genre | : |
ISBN | : |
Since the advent of hard-collision physics, the study of diffractive processes - shadow physics - has been less prominent than before. However, there is now a renewed interest in the subject, especially in that aspect which synthesizes the short-distance, hard-collision phenomena with the classical physics of large rapidity-gaps. This is especially stimulated by the recent data on deep-inelastic scattering from HERA, as well as the theoretical work which relates to it. The word diffraction is sometimes used by high-energy physicists in a loose way. The author defines this term to mean: A diffractive process occurs if and only if there is a large rapidity gap in the produced-particle phase space which is not exponentially suppressed. Here a rapidity gap means essentially no hadrons produced into the rapidity gap (which operates in the [open-quotes]lego[close-quotes] phase-space of pseudo-rapidity and azimuthal angle). And non-exponential suppression implies that the cross-section for creating a gap with width [Delta][eta] does not have a power-law decrease with increasing subenergy s=e[sup [Delta][eta]], but behaves at most like some power of pseudorapidity [Delta][eta][approx]log(s). The term hard diffraction shall simply refer to those diffractive process which have jets in the final-state phase-space.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1999 |
Genre | : |
ISBN | : |
Preliminary results from the DO experiment on dijet production with forward rapidity gaps in {anti p}p collisions are presented at center-of-mass (square root)s = 1800 GeV and 630GeV. The number oi events with rapidity gaps at both center-of-mass energies is significantly greater than tne expectatmn from multiplicity fluctuations and is consistent with a hard single diffractive process. We also observe an excess of events which contain jets and two rapidity gaps, a topology which is consistent with hard double pomeron exchange.
Author | : Vincenzo Barone |
Publisher | : Springer Science & Business Media |
Total Pages | : 414 |
Release | : 2013-03-09 |
Genre | : Science |
ISBN | : 3662047241 |
A comprehensive and up-to-date overview of soft and hard diffraction processes in strong interaction physics. The first part covers soft hadron—hadron scattering in a complete and mature presentation. It can be used as a textbook in particle physics classes. Chapters 8-11 address graduate students as well as researchers, covering the "new diffraction": the pomeron in QCD, low-x physics, diffractive deep inelastic scattering and related processes.
Author | : |
Publisher | : |
Total Pages | : 9 |
Release | : 1997 |
Genre | : |
ISBN | : |
The aim of these studies is to use hard (large Q2) processes to investigate the partonic nature of the pomeron. We have measured events with large rapidity gaps between balancing high E{sub T} jets, events with two forward (same-side) jets and a large gap (diffractive di-jet production), diffractive W{sup {+-}} production and diffractive heavy flavor (J/[psi] and b-quark) production. Candidate events of the type double-pomeron → di-jet are observed. I close with a look at the future (Run II).