利用H1喷注截面测量确定次下领头阶 QCD 中的强耦合常数：H1合作组
Determination of the strong coupling constant in next-to-next-to-leading order QCD using H1 jet cross section measurements: H1 Collaboration.
作者信息
Andreev V, Baghdasaryan A, Begzsuren K, Belousov A, Bertone V, Bolz A, Boudry V, Brandt G, Brisson V, Britzger D, Buniatyan A, Bylinkin A, Bystritskaya L, Campbell A J, Cantun Avila K B, Cerny K, Chekelian V, Contreras J G, Cvach J, Currie J, Dainton J B, Daum K, Diaconu C, Dobre M, Dodonov V, Eckerlin G, Egli S, Elsen E, Favart L, Fedotov A, Feltesse J, Fleischer M, Fomenko A, Gabathuler E, Gayler J, Gehrmann T, Ghazaryan S, Goerlich L, Gogitidze N, Gouzevitch M, Grab C, Grebenyuk A, Greenshaw T, Grindhammer G, Gwenlan C, Haidt D, Henderson R C W, Hladkỳ J, Hoffmann D, Horisberger R, Hreus T, Huber F, Huss A, Jacquet M, Janssen X, Jung A W, Jung H, Kapichine M, Katzy J, Kiesling C, Klein M, Kleinwort C, Kogler R, Kostka P, Kretzschmar J, Krücker D, Krüger K, Landon M P J, Lange W, Laycock P, Lebedev A, Levonian S, Lipka K, List B, List J, Lobodzinski B, Malinovski E, Martyn H-U, Maxfield S J, Mehta A, Meyer A B, Meyer H, Meyer J, Mikocki S, Morozov A, Müller K, Naumann Th, Newman P R, Niebuhr C, Niehues J, Nowak G, Olsson J E, Ozerov D, Pascaud C, Patel G D, Perez E, Petrukhin A, Picuric I, Pirumov H, Pitzl D, Plačakytė R, Polifka R, Rabbertz K, Radescu V, Raicevic N, Ravdandorj T, Reimer P, Rizvi E, Robmann P, Roosen R, Rostovtsev A, Rotaru M, Šálek D, Sankey D P C, Sauter M, Sauvan E, Schmitt S, Schoeffel L, Schöning A, Sefkow F, Shushkevich S, Soloviev Y, Sopicki P, South D, Spaskov V, Specka A, Steder M, Stella B, Straumann U, Sutton M R, Sykora T, Thompson P D, Traynor D, Truöl P, Tsakov I, Tseepeldorj B, Valkárová A, Vallée C, Van Mechelen P, Vazdik Y, Wegener D, Wünsch E, Žáček J, Zhang Z, Žlebčík R, Zohrabyan H, Zomer F
机构信息
19Lebedev Physical Institute, Moscow, Russia.
31Yerevan Physics Institute, Yerevan, Armenia.
出版信息
Eur Phys J C Part Fields. 2017;77(11):791. doi: 10.1140/epjc/s10052-017-5314-7. Epub 2017 Nov 22.
The strong coupling constant is determined from inclusive jet and dijet cross sections in neutral-current deep-inelastic scattering (DIS) measured at HERA by the H1 collaboration using next-to-next-to-leading order (NNLO) QCD predictions. The dependence of the NNLO predictions and of the resulting value of at the -boson mass are studied as a function of the choice of the renormalisation and factorisation scales. Using inclusive jet and dijet data together, the strong coupling constant is determined to be . Complementary, is determined together with parton distribution functions of the proton (PDFs) from jet and inclusive DIS data measured by the H1 experiment. The value obtained is consistent with the determination from jet data alone. The impact of the jet data on the PDFs is studied. The running of the strong coupling is tested at different values of the renormalisation scale and the results are found to be in agreement with expectations.
强耦合常数是由H1合作组在HERA上通过中性流深度非弹性散射（DIS）中的包容性喷注和双喷注截面测量，并使用次下一级领先阶（NNLO）量子色动力学（QCD）预测来确定的。研究了NNLO预测以及在玻色子质量处由此得到的强耦合常数的值随重整化和因子化尺度选择的变化。结合包容性喷注和双喷注数据，确定强耦合常数为 。作为补充，强耦合常数与质子的部分子分布函数（PDFs）一起由H1实验测量的喷注和包容性DIS数据确定。得到的值与仅由喷注数据确定的结果一致。研究了喷注数据对PDFs的影响。在不同的重整化尺度值下测试了强耦合的跑动，结果与预期相符。
Zotero 插件