New Exotica Scenario for the New Exotica Scenario for the LHC: - - PowerPoint PPT Presentation

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New Exotica Scenario for the New Exotica Scenario for the LHC: - - PowerPoint PPT Presentation

Oct 15, 2023 277 likes •396 views

New Exotica Scenario for the New Exotica Scenario for the LHC: Quirks Q A A. De Roeck De Roeck CERN Quirks are exotic vector-like fermions that transform as a fundamental under a hidden confining group, but also carry g g p, y Quirks!

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SLIDE 1

New Exotica Scenario for the New Exotica Scenario for the LHC: Quirks Q

A De Roeck

  • A. De Roeck

CERN

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SLIDE 2

Quirks are exotic vector-like fermions that transform as a fundamental under a hidden confining group, but also carry

Quirks!

g g p, y Standard Model charges. The quirk mass M is much larger than the confinement The quirk mass M is much larger than the confinement scale Λ.

⇒Macroscopic strings!?!

  • Signatures Catalogue

⇒Macroscopic strings!?!

Signatures Catalogue

– Quirks with strange curvature in the B-field of the detectors – Quirks emitting many soft photons g y p – Quirks emitting many soft hadrons – Quirks emitting glueballs – Quirks loosing energy in the detector (like R-Hardons?) – Quirks causing displaced vertices Quirk pairs causing unusual ionization – Quirk pairs causing unusual ionization. – Timing of the signals?

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SLIDE 3

Macro-Strings at the LHC?

New strong interactions with small Λ & new quarks mQ> several hundered GeV

Markus Luty/Aspen 07

  • Strings do not break up ⇒ Stringy objects in the detector.

j

  • End points are massive quarks (quirks)
  • The strings can oscillate⇒ strange signature in detectors
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SLIDE 4

Proposal

  • Quirks move ‘connected’ through the

ti fi ld W i d i t magnetic field. Weird signatures.

  • Can G4 be made to deal with such a case?
  • If yes: Markus Luty (UC-Davis) interested in

collaborating with 2 graduate students g g

  • More details in

– Macroscopic Strings and 'Quirks' at – Macroscopic Strings and Quirks at Colliders.
Junhai Kang, Markus A. Luty . arXiv:0805.4642

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SLIDE 5
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SLIDE 6

Backup

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SLIDE 7

Quirk Signatures

Particles remain connected with a ‘string’ ⇒ Strange curvature in the detector

  • M. Luty
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SLIDE 8

Quirk Signatures

Particles remain connected with a short ‘string’ ⇒ Bound state moves through the detector

  • M. Luty
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SLIDE 9

Quirk Signatures

Particles yoyo around and loose energy ⇒ emission of many soft harons, photons, and possible glueballs

  • M. Luty

All these signatures are challenging g g for the experiments starting with the trigger trigger

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SLIDE 10

Quirks shower photons