Harmony of super form factors
Harmony of super form factors
In this paper we continue our systematic study of form factors of half-BPS operators in N = 4
super Yang-Mills. In particular, we extend various on-shell techniques known for amplitudes to the case of form factors, including MHV rules, recursion relations, unitarity and dual MHV rules. As an application, we present the solution of the recursion relation for split-helicity form factors. We then consider form factors of the stress-tensor multiplet operator and of its chiral truncation, and write down supersymmetric Ward identities using chiral as well as non-chiral superspace formalisms. This allows us to obtain compact formulae for families of form factors, such as the maximally non-MHV case. Finally we generalise dual MHV rules in dual momentum space to form factors.
Brandhuber, A.
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Gürdoğan, Ö.
841de8b6-4eb2-407f-a4c4-c8136403794d
Mooney, R.
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Travaglini, G.
fac8c607-f5af-46d1-a659-06bf823f90c3
Yang, G.
50edabbc-f459-4959-96fd-cceddb315c50
12 October 2011
Brandhuber, A.
78d57a29-ca4a-4179-90d3-d554551e8f49
Gürdoğan, Ö.
841de8b6-4eb2-407f-a4c4-c8136403794d
Mooney, R.
9d4a0a72-efb7-489a-8b9d-7b52ac78bdbb
Travaglini, G.
fac8c607-f5af-46d1-a659-06bf823f90c3
Yang, G.
50edabbc-f459-4959-96fd-cceddb315c50
Brandhuber, A., Gürdoğan, Ö., Mooney, R., Travaglini, G. and Yang, G.
(2011)
Harmony of super form factors.
Journal of High Energy Physics, 2011 (46).
(doi:10.1007/jhep10(2011)046).
Abstract
In this paper we continue our systematic study of form factors of half-BPS operators in N = 4
super Yang-Mills. In particular, we extend various on-shell techniques known for amplitudes to the case of form factors, including MHV rules, recursion relations, unitarity and dual MHV rules. As an application, we present the solution of the recursion relation for split-helicity form factors. We then consider form factors of the stress-tensor multiplet operator and of its chiral truncation, and write down supersymmetric Ward identities using chiral as well as non-chiral superspace formalisms. This allows us to obtain compact formulae for families of form factors, such as the maximally non-MHV case. Finally we generalise dual MHV rules in dual momentum space to form factors.
Text
JHEP10(2011)046
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Accepted/In Press date: 18 September 2011
Published date: 12 October 2011
Identifiers
Local EPrints ID: 496197
URI: http://eprints.soton.ac.uk/id/eprint/496197
ISSN: 1126-6708
PURE UUID: fae820d9-ae8e-4b33-ace7-13e31a8d6614
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Date deposited: 06 Dec 2024 17:39
Last modified: 21 Aug 2025 03:00
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Author:
A. Brandhuber
Author:
R. Mooney
Author:
G. Travaglini
Author:
G. Yang
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