Precise Study of the Z/gamma* Boson Transverse Momentum Distribution in p(p)over-bar Collisions Using a Novel Technique
2011 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 106, no 12, 122001- p.Article in journal (Refereed) Published
Using 7.3 fb(-1) of p (p) over bar collisions collected by the D0 detector at the Fermilab Tevatron, we measure the distribution of the variable phi(eta)*, which probes the same physical effects as the Z/gamma* boson transverse momentum, but is less susceptible to the effects of experimental resolution and efficiency. A QCD prediction is found to describe the general features of the phi(eta)* distribution, but is unable to describe its detailed shape or dependence on boson rapidity. A prediction that includes a broadening of transverse momentum for small values of the parton momentum fraction is strongly disfavored.
Place, publisher, year, edition, pages
2011. Vol. 106, no 12, 122001- p.
IdentifiersURN: urn:nbn:se:uu:diva-151647DOI: 10.1103/PhysRevLett.106.122001ISI: 000288599300007OAI: oai:DiVA.org:uu-151647DiVA: diva2:411045