Note on RHIC polarimetry.

Spinka, H.

doi:10.2172/750790

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…which has the advantage that effects coming from left and right acceptances cancel in the ratio [3], leaving no dependence on XL or XR-It can be approximated to A'^''"^ :i; ^Truf (l + j£p) with ep = (P^ -P^)/{P^ +P^). The measured asymmetry is equal to the true asymmetry if the two polarizations P^ and P^ are the same, which is true to a very good approximation, since they differ at most by 0.4%.…”

Section: Discussionmentioning

confidence: 99%

Search for a 2-Photon Exchange in Inclusive DIS on a Transversely Polarized Hydrogen Target at HERMES

Nardo¹,

Lopez‐Ruiz²,

Ossa³

2009

AIP Conference Proceedings

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Left-right single-spin asymmetries are measured in inclusive deep inelastic scattering at HERMES, with the goal of searching for a 2-photon exchange signal in the range 0.004 < x < 0.9, 0.1 < g^ < 20 GeV^. In two separate regions, for Q^ > 1 GeV^ and Q^ < 1 GeV^, and for both electron and positron beams, the asymmetries are found to be consistent with zero showing that within the uncertainties no signal is detected.

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Section: Discussionmentioning

confidence: 99%

Search for a 2-Photon Exchange in Inclusive DIS on a Transversely Polarized Hydrogen Target at HERMES

Nardo¹,

Lopez‐Ruiz²,

Ossa³

2009

AIP Conference Proceedings

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“…Unpolarized beam can probably be used to study some of these effects (see Ref. [5] for a way to search for phase space differences using luminosities measured in various intersection regions).…”

Section: Rhic and The Cni Polarimetersmentioning

confidence: 99%

Proton Beam Polarimetry at BNL

Spinka¹

2003

AIP Conference Proceedings

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“…L ↑,↓ are the total luminosities in the two polarization states, and L ↑,↓ P are the polarization-weighted luminosities. The advantage of writing the asymmetry this way is that acceptance effects originating from a different left and right acceptance completely cancel in the ratio [19].…”

mentioning

confidence: 99%

Search for a Two-Photon Exchange Contribution in inclusive DIS at sc hermes

Ruiz¹

2009

Proceedings of the XVII International Workshop on Deep-Inelastic Scattering and Related Topics

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The transverse-target single-spin asymmetry for inclusive deep-inelastic scattering with effectively unpolarized electron and positron beams off a transversely polarized hydrogen target was measured, with the goal of searching for a two-photon exchange signal in the kinematic range 0.004 < x < 0.9 and 0.1 GeV 2 < Q 2 < 20 GeV 2. In two separate regions Q 2 > 1 GeV 2 and Q 2 < 1 GeV 2 , and for both electron and positron beams, the asymmetries are found to be consistent with zero within statistical and systematic uncertainties, which are of order 10 −3 for the overall asymmetries.

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Note on RHIC polarimetry.

Cited by 3 publications

References 5 publications

Search for a 2-Photon Exchange in Inclusive DIS on a Transversely Polarized Hydrogen Target at HERMES

Search for a 2-Photon Exchange in Inclusive DIS on a Transversely Polarized Hydrogen Target at HERMES

Proton Beam Polarimetry at BNL

Search for a Two-Photon Exchange Contribution in inclusive DIS at sc hermes

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