Characterisation of the dip-bump structure observed in proton–proton elastic scattering at s = 8 TeV
The TOTEM collaboration at the CERN LHC has measured the differential cross-section of elastic proton–proton scattering at s = 8 TeV in the squared four-momentum transfer range 0.2 GeV 2 < | t | < 1.9 GeV 2 . This interval includes the structure with a diffractive minimum (“dip”) and a seconda...
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Veröffentlicht in: | The European physical journal. C, Particles and fields Particles and fields, 2022-03, Vol.82 (3) |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The TOTEM collaboration at the CERN LHC has measured the differential cross-section of elastic proton–proton scattering at
s
=
8
TeV
in the squared four-momentum transfer range
0.2
GeV
2
<
|
t
|
<
1.9
GeV
2
. This interval includes the structure with a diffractive minimum (“dip”) and a secondary maximum (“bump”) that has also been observed at all other LHC energies, where measurements were made. A detailed characterisation of this structure for
s
=
8
TeV
yields the positions,
|
t
|
dip
=
(
0.521
±
0.007
)
GeV
2
and
|
t
|
bump
=
(
0.695
±
0.026
)
GeV
2
, as well as the cross-section values,
d
σ
/
d
t
dip
=
(
15.1
±
2.5
)
μ
b
/
GeV
2
and
d
σ
/
d
t
bump
=
(
29.7
±
1.8
)
μ
b
/
GeV
2
, for the dip and the bump, respectively. |
---|---|
ISSN: | 1434-6044 1434-6052 |
DOI: | 10.1140/epjc/s10052-022-10065-x |