Skip to main content
Home
Department Of Physics text logo
  • Research
    • Our research
    • Our research groups
    • Our research in action
    • Research funding support
    • Summer internships for undergraduates
  • Study
    • Undergraduates
    • Postgraduates
  • Engage
    • For alumni
    • For business
    • For schools
    • For the public
Menu
Theoretical physicists working at a blackboard collaboration pod in the Beecroft building.
Credit: Jack Hobhouse

Prof. Gavin Salam FRS

Royal Society Research Professor, Professor of Theoretical Physics and Senior Research Fellow at All Souls College

Research theme

  • Fundamental particles and interactions

Sub department

  • Rudolf Peierls Centre for Theoretical Physics

Research groups

  • Particle theory
gavin.salam@physics.ox.ac.uk
Telephone: 01865 273976
Rudolf Peierls Centre for Theoretical Physics, room 70.25
  • About
  • Research
  • Prizes, awards and recognition
  • Publications

Flavoured jet algorithms: a comparative study

Journal of High Energy Physics Springer Nature 2025:9 (2025) 149

Authors:

Arnd Behring, Simone Caletti, Francesco Giuli, Radosław Grabarczyk, Andreas Hinzmann, Alexander Huss, Joey Huston, Ezra D Lesser, Simone Marzani, Davide Napoletano, Rene Poncelet, Daniel Reichelt, Alberto Rescia, Gavin P Salam, Ludovic Scyboz, Federico Sforza, Andrzej Siódmok, Giovanni Stagnitto, James Whitehead, Ruide Xu

Abstract:

The accurate identification of heavy-flavour jets — those which originate from bottom or charm quarks — is crucial for precision studies of the Standard Model and searches for new physics. However, assigning flavour to jets presents significant challenges, primarily due to issues with infrared and collinear (IRC) safety. This paper aims to address these challenges by evaluating recently-proposed jet algorithms designed to be IRC-safe and applicable in high-precision measurements. We compare these algorithms across benchmark heavy-flavour production processes and kinematic regimes that are relevant for LHC phenomenology. Exploiting both fixed-order calculations in QCD as well as parton shower simulations, we analyse the infrared sensitivity of these new algorithms at different stages of the event evolution and compare to flavour labelling strategies currently adopted by LHC collaborations. The results highlight that, while all algorithms lead to more robust flavour assignments compared to current techniques, they vary in performance depending on the observable and energy regime. The study lays groundwork for robust, flavour-aware jet analyses in current and future collider experiments to maximise the physics potential of experimental data by reducing discrepancies between theoretical and experimental methods.
More details from the publisher
More details

Anomalous scaling of linear power corrections

(2025)

Authors:

Casey Farren-Colloty, Jack Helliwell, Rtvik Patel, Gavin P Salam, Silvia Zanoli
More details from the publisher

Flavoured jet algorithms: a comparative study

(2025)

Authors:

Arnd Behring, Simone Caletti, Francesco Giuli, Radoslaw Grabarczyk, Andreas Hinzmann, Alexander Huss, Joey Huston, Ezra D Lesser, Simone Marzani, Davide Napoletano, Rene Poncelet, Daniel Reichelt, Alberto Rescia, Gavin P Salam, Ludovic Scyboz, Federico Sforza, Andrzej Siodmok, Giovanni Stagnitto, James Whitehead, Ruide Xu
More details from the publisher

Logarithmically-accurate and positive-definite NLO shower matching

(2025)

Authors:

Melissa van Beekveld, Silvia Ferrario Ravasio, Jack Helliwell, Alexander Karlberg, Gavin P Salam, Ludovic Scyboz, Alba Soto-Ontoso, Gregory Soyez, Silvia Zanoli
Details from ArXiV

A collinear shower algorithm for NSL non-singlet fragmentation

Journal of High Energy Physics Springer 2025:3 (2025) 209

Authors:

Melissa van Beekveld, Mrinal Dasgupta, Basem Kamal El-Menoufi, Jack Helliwell, Pier Francesco Monni, Gavin P Salam

Abstract:

We formulate a collinear partonic shower algorithm that achieves next-to-single-logarithmic (NSL, αsnLn−1) accuracy for collinear-sensitive non-singlet fragmentation observables. This entails the development of an algorithm for nesting triple-collinear splitting functions. It also involves the inclusion of the one-loop double-collinear corrections, through a z-dependent NLO-accurate effective 1 → 2 branching probability, using a formula that can be applied more generally also to future full showers with 1 → 3 splitting kernels. The specific NLO branching probability is calculated in two ways, one based on slicing, the other using a subtraction approach based on recent analytical calculations. We close with demonstrations of the shower’s accuracy for non-singlet partonic fragmentation functions and the energy spectrum of small-R quark jets. This work represents an important conceptual step towards general NNLL accuracy in parton showers.
More details from the publisher
Details from ORA
More details

Pagination

  • Current page 1
  • Page 2
  • Page 3
  • Page 4
  • Page 5
  • Page 6
  • Page 7
  • Page 8
  • Page 9
  • …
  • Next page Next
  • Last page Last

Footer Menu

  • Contact us
  • Giving to the Dept of Physics
  • Work with us
  • Media

User account menu

  • Log in

Follow us

FIND US

Clarendon Laboratory,

Parks Road,

Oxford,

OX1 3PU

CONTACT US

Tel: +44(0)1865272200

University of Oxfrod logo Department Of Physics text logo
IOP Juno Champion logo Athena Swan Silver Award logo

© University of Oxford - Department of Physics

Cookies | Privacy policy | Accessibility statement

Built by: Versantus

  • Home
  • Research
  • Study
  • Engage
  • Our people
  • News & Comment
  • Events
  • Our facilities & services
  • About us
  • Current students
  • Staff intranet