翻訳と辞書 Words near each other ・ Drepanoidea ・ Drepanojana ・ Drejtorisë së Përgjithshme të Gjendjes Civile ・ Drejø ・ Drejček in trije Marsovčki ・ Dreka, Texas ・ Drekale ・ Drekavac ・ Dreketi F.C. ・ Dreketi River ・ Drekkana ・ Drel ・ Drelb ・ Drell ・ Drellingore ・ Drell–Yan process ・ Drelsdorf ・ Drelów ・ Drem ・ Drem railway station ・ Dremel ・ Dremel (software) ・ Dremel Europe ・ Dremelspitze ・ Dremiel Byers ・ Dremmen ・ Dren ・ Dren (Lazarevac) ・ Dren (name) ・ Dren (Obrenovac) Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Drell–Yan process ： ウィキペディア英語版 Drell–Yan process The Drell–Yan process occurs in high energy hadron–hadron scattering. It takes place when a quark of one hadron and an antiquark of another hadron annihilate, creating a virtual photon or Z boson which then decays into a pair of oppositely-charged leptons. This process was first suggested by Sidney Drell and Tung-Mow Yan in 1970〔 ::And ''erratum'' in 〕 to describe the production of lepton–antilepton pairs in high-energy hadron collisions. Experimentally, this process was first observed by J.H. Christenson ''et al.''〔 〕 in proton–uranium collisions at the Alternating Gradient Synchrotron. ==Overview== The Drell–Yan process is studied both in fixed-target and collider experiments. It provides valuable information about the parton distribution functions (PDFs) which describe the way the momentum of an incoming high-energy nucleon is partitioned among its constituent partons. These PDFs are basic ingredients for calculating essentially all processes at hadron colliders. Although PDFs should be derivable in principle, current ignorance of some aspects of the strong force prevents this. Instead, the forms of the PDFs are deduced from experimental data. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Drell–Yan process」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.