RT Journal Article
T1 Jet axes and universal transverse-momentum dependent fragmentation
A1 Neill, Duff
A1 Scimemi, Ignazio
A1 Waalewijin, Wouter J
AB We study the transverse momentum spectrum of hadrons in jets. By measuring the transverse momentum with respect to a judiciously chosen axis, we find that this observable is insensitive to ( the recoil of) soft radiation. Furthermore, for small transverse momenta we show that the effects of the jet boundary factorize, leading to a new transverse-momentum-dependent (TMD) fragmentation function. In contrast to the usual TMD fragmentation functions, it does not involve rapidity divergences and is universal in the sense that it is independent of the type of process and number of jets. These results directly apply to sub-jets instead of hadrons. We discuss potential applications, which include studying nuclear modification effects in heavy-ion collisions and identifying boosted heavy resonances.
PB Springer
SN 1029-8479
YR 2017
FD 2017-04-04
LK https://hdl.handle.net/20.500.14352/17848
UL https://hdl.handle.net/20.500.14352/17848
LA eng
NO © The Authors.We thank A. Papaefstathiou, M. Procura, J. Thaler and L. Zoppi for comments on this manuscript. I.S. is supported by the Spanish MECD grants FPA2014-53375-C2-2-P, FPA2016-75654-C2-2-P and the group UPARCOS. W.W. is supported by the ERC grant ERC-STG-2015-677323 and the D-ITP consortium, a program of the Netherlands Organization for Scientific Research (NWO) that is funded by the Dutch Ministry of Education, Culture and Science (OCW). D.N. acknowledges support from US Department of Energy contract DE-AC52-06NA25396 and through the LANL/LDRD Program. We also thank the Erwin Schr¨odinger Institute program “Challenges and Concepts for Field Theory and Applications in the Era of the LHC Run-2”, where this work was initiated.
NO Unión Europea. H2020
NO Ministerio de Educación, Cultura y Deporte (MECD)
NO UPARCOS
NO D-ITP consortium
NO Netherlands Organization for Scientific Research (NWO)
NO Dutch Ministry of Education, Culture and Science (OCW)
DS Docta Complutense
RD 17 abr 2025