PANDA perspectives in exotics -Performances in line shape measurements
Jul, 20247 pages
Published in:
- Nuovo Cim.C 47 (2024) 4, 179
Contribution to:
- Published: Jul, 2024
Experiments:
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Abstract:
The new Facility for Antiproton and Ion Research (FAIR) is under
construction at GSI in Darmstadt (Germany). Antiprotons are planned to be
provided by the High Energy Storage Ring, where the PANDA experiment will directly
be located. It represents the central part of the hadron physics programme.
The field of hadron spectroscopy has gained new momentum by the discovery of
the so-called charmonium-like and bottomonium-like exotic states over the past two
decades. The nature of many of the so-called exotic XY Z states in the charmonium
region are, however, not yet understood. Precise measurements of hadron masses
and widths are mandatory to sort out different theoretical models and clarify the
nature of these unexpected states. One example is the .c1(3872), formerly known
as X(3872) —although being the first of the new charmonium-like states discovered
since 2003, the nature of this state is still not clarified. In p¯p annihilation, such XY Z
states can be produced in direct formation, allowing for a precise resonance energy
scan. Using the example of the X(3872), we quantified the expected sensitivity of
energy scans of narrow resonances and how well we can distinguish between models
that turn out to be indistinguishable from the LHCb data.References(16)
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