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Title: The seven-gluon amplitude in multi-Regge kinematics beyond leading logarithmic accuracy

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [2];  [3];  [4];  [5];  [6];  [5]
  1. Swiss Federal Inst. of Technology in Zurich (ETH Zurich) (Switzerland). Inst. for Theoretical Physics
  2. Univ. of Southampton (United Kingdom). School of Physics & Astronomy
  3. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Theoretical Physics Dept.; Univ. of Louvain (UCL), Louvain-la-Neuve (Belgium). Center for Cosmology, Particle Physics and Phenomenology (CP3)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. Univ. of Louvain (UCL), Louvain-la-Neuve (Belgium). Center for Cosmology, Particle Physics and Phenomenology (CP3)
  6. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). DESY Theory Group

We present an all-loop dispersion integral, well-defined to arbitrary logarithmic accuracy, describing the multi-Regge limit of the 2 → 5 amplitude in planar N = 4 super Yang-Mills theory. It follows from factorization, dual conformal symmetry and consistency with soft limits, and specifically holds in the region where the energies of all produced particles have been analytically continued. After promoting the known symbol of the 2-loop N -particle MHV amplitude in this region to a function, we specialize to N = 7, and extract from it the next-to-leading order (NLO) correction to the BFKL central emission vertex, namely the building block of the dispersion integral that had not yet appeared in the well-studied six-gluon case. As an application of our results, we explicitly compute the seven-gluon amplitude at next-to-leading logarithmic accuracy through 5 loops for the MHV case, and through 3 and 4 loops for the two independent NMHV helicity configurations, respectively.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Louvain (UCL), Louvain-la-Neuve (Belgium); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
Sponsoring Organization:
USDOE; European Research Council (ERC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1443996
Report Number(s):
SLAC-PUB--17220; PII: 8482
Journal Information:
Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 6 Vol. 2018; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English

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Cluster adjacency and the four-loop NMHV heptagon journal March 2019
Strings and High Energy Scattering text January 2018
All two-loop MHV remainder functions in multi-Regge kinematics text January 2018
Cluster adjacency and the four-loop NMHV heptagon journal March 2019
The multi-Regge limit of the eight-particle amplitude beyond leading logarithmic accuracy journal July 2019
All-Order Amplitudes at any Multiplicity in the Multi-Regge Limit journal April 2020
Cluster adjacency and the four-loop NMHV heptagon text January 2018
Cluster adjacency and the four-loop NMHV heptagon text January 2019
The Multi-Regge Limit from the Wilson Loop OPE text January 2019
All-order amplitudes at any multiplicity in the multi-Regge limit text January 2019
The Multi-Regge Limit from the Wilson Loop OPE text January 2020
All-order amplitudes at any multiplicity in the multi-Regge limit text January 2020
All-Order Amplitudes at any Multiplicity in the Multi-Regge Limit text January 2020
Cluster adjacency and the four-loop NMHV heptagon text January 2018
The Multi-Regge Limit from the Wilson Loop OPE text January 2019