BOOST 2017

16-21 July 2017
Embassy Suites Buffalo
US/Eastern timezone

A study of jet mass distributions with grooming

18 Jul 2017, 14:00
20m
Embassy Suites Buffalo

Embassy Suites Buffalo

200 Delaware Avenue Buffalo, NY 14202

Speaker

Laís Sarem Schunk (IPhT, CEA - Saclay)

Description

We perform a phenomenological study of the invariant mass distribution of hadronic jets produced in pp collisions, in conjunction with a groomer, in particular the modified MassDrop Tagger (equivalent to Soft Drop with angular exponent $\beta = 0$). Our calculation resums large logarithms of the jet mass and includes the full dependence on the groomer’s energy threshold $z_\text{cut}$ , and it is matched to fixed-order QCD matrix elements at next-to-leading order. We accounted for non-perturbative contributions by including a correction factor derived from Monte Carlo parton-shower simulations. Furthermore, we consider two different possibilities for the jet transverse momentum: before or after grooming. We show that the former should be preferred for comparisons with upcoming experimental data essentially because the mMDT transverse momentum spectrum is not collinear safe.

Primary authors

Gregory Soyez (IPhT, CEA Saclay) Laís Sarem Schunk (IPhT, CEA - Saclay) Simone Marzani (SUNY Buffalo)