https://doi.org/10.1140/epjc/s10052-023-12243-x
Letter
A new way of reducing negative weights in MC@NLO
1
Division of Particle and Nuclear Physics, Department of Physics, Lund University, Box 118, 221 00, Lund, Sweden
2
Dipartimento di Fisica, Università di Torino and INFN, Sezione di Torino, 10125, Turin, Italy
Received:
20
October
2023
Accepted:
6
November
2023
Published online:
17
November
2023
We introduce a new technique, that we dub Born spreading, aimed at reducing the number of negative-weight 
events in the MC@NLO matching of NLO calculations with parton-shower simulations. We show that such a technique, based on a re-distribution of Born matrix elements in the radiative phase space, achieves a sizeable reduction of negative-weight events at little computational cost. The method does not induce any biases in physical distributions.
© The Author(s) 2023
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