Single-transverse-spin asymmetries aof identified charged hadrons in polarized pp collisions at s=62.4GeV

I. Arsene; I. G. Bearden; D. Beavis; S. Bekele; C. Besliu; B. Budick; H. Bøggild; C. Chasman; H. H. Dalsgaard; R. Debbe; B. Fox; J. J. Gaardhøje; K. Hagel; A. Jipa; E. B. Johnson; R. Karabowicz; N. Katryńska; E. J. Kim; T. M. Larsen; J. H. Lee; G. Løvhøiden; Z. Majka; M. Murray; C. Nygaard; J. Natowitz; B. S. Nielsen; D. Pal; A. Qviler; C. Ristea; D. Röhrich; S. J. Sanders; P. Staszel; T. S. Tveter; F. Videbæk; H. Yang; R. Wada

doi:10.1103/PhysRevLett.101.042001

Single-transverse-spin asymmetries aof identified charged hadrons in polarized pp collisions at s=62.4GeV

I. Arsene, I. G. Bearden, D. Beavis, S. Bekele, C. Besliu, B. Budick, H. Bøggild, C. Chasman, H. H. Dalsgaard, R. Debbe, B. Fox, J. J. Gaardhøje, K. Hagel, A. Jipa, E. B. Johnson, R. Karabowicz, N. Katryńska, E. J. Kim, T. M. Larsen, J. H. LeeG. Løvhøiden, Z. Majka, M. Murray, C. Nygaard, J. Natowitz, B. S. Nielsen, D. Pal, A. Qviler, C. Ristea, D. Röhrich, S. J. Sanders, P. Staszel, T. S. Tveter, F. Videbæk, H. Yang, R. Wada

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Abstract

The first measurements of xF-dependent single-spin asymmetries of identified charged hadrons, π±, K±, and protons, from transversely polarized proton-proton collisions at 62.4GeV at RHIC are presented. Large asymmetries are seen in the pion and kaon channels. The asymmetries in inclusive π+ production, AN(π+), increase with xF from 0 to ∼0.25 and AN(π-) decrease from 0 to ∼-0.4. Observed asymmetries for K- unexpectedly show positive values similar to those for K+, increasing with xF, whereas proton asymmetries are consistent with zero over the measured kinematic range. Comparisons of the data with predictions of QCD-based models are presented.

Original language	English (US)
Article number	042001
Journal	Physical Review Letters
Volume	101
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.101.042001
State	Published - Jul 22 2008

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.101.042001

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Arsene, I., Bearden, I. G., Beavis, D., Bekele, S., Besliu, C., Budick, B., Bøggild, H., Chasman, C., Dalsgaard, H. H., Debbe, R., Fox, B., Gaardhøje, J. J., Hagel, K., Jipa, A., Johnson, E. B., Karabowicz, R., Katryńska, N., Kim, E. J., Larsen, T. M., ... Wada, R. (2008). Single-transverse-spin asymmetries aof identified charged hadrons in polarized pp collisions at s=62.4GeV. Physical Review Letters, 101(4), Article 042001. https://doi.org/10.1103/PhysRevLett.101.042001

Arsene, I, Bearden, IG, Beavis, D, Bekele, S, Besliu, C, Budick, B, Bøggild, H, Chasman, C, Dalsgaard, HH, Debbe, R, Fox, B, Gaardhøje, JJ, Hagel, K, Jipa, A, Johnson, EB, Karabowicz, R, Katryńska, N, Kim, EJ, Larsen, TM, Lee, JH, Løvhøiden, G, Majka, Z, Murray, M, Nygaard, C, Natowitz, J, Nielsen, BS, Pal, D, Qviler, A, Ristea, C, Röhrich, D, Sanders, SJ, Staszel, P, Tveter, TS, Videbæk, F, Yang, H & Wada, R 2008, 'Single-transverse-spin asymmetries aof identified charged hadrons in polarized pp collisions at s=62.4GeV', Physical Review Letters, vol. 101, no. 4, 042001. https://doi.org/10.1103/PhysRevLett.101.042001

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title = "Single-transverse-spin asymmetries aof identified charged hadrons in polarized pp collisions at s=62.4GeV",

abstract = "The first measurements of xF-dependent single-spin asymmetries of identified charged hadrons, π±, K±, and protons, from transversely polarized proton-proton collisions at 62.4GeV at RHIC are presented. Large asymmetries are seen in the pion and kaon channels. The asymmetries in inclusive π+ production, AN(π+), increase with xF from 0 to ∼0.25 and AN(π-) decrease from 0 to ∼-0.4. Observed asymmetries for K- unexpectedly show positive values similar to those for K+, increasing with xF, whereas proton asymmetries are consistent with zero over the measured kinematic range. Comparisons of the data with predictions of QCD-based models are presented.",

author = "I. Arsene and Bearden, {I. G.} and D. Beavis and S. Bekele and C. Besliu and B. Budick and H. B{\o}ggild and C. Chasman and Dalsgaard, {H. H.} and R. Debbe and B. Fox and Gaardh{\o}je, {J. J.} and K. Hagel and A. Jipa and Johnson, {E. B.} and R. Karabowicz and N. Katry{\'n}ska and Kim, {E. J.} and Larsen, {T. M.} and Lee, {J. H.} and G. L{\o}vh{\o}iden and Z. Majka and M. Murray and C. Nygaard and J. Natowitz and Nielsen, {B. S.} and D. Pal and A. Qviler and C. Ristea and D. R{\"o}hrich and Sanders, {S. J.} and P. Staszel and Tveter, {T. S.} and F. Videb{\ae}k and H. Yang and R. Wada",

year = "2008",

month = jul,

day = "22",

doi = "10.1103/PhysRevLett.101.042001",

language = "English (US)",

volume = "101",

journal = "Physical Review Letters",

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T1 - Single-transverse-spin asymmetries aof identified charged hadrons in polarized pp collisions at s=62.4GeV

AU - Arsene, I.

AU - Bearden, I. G.

AU - Beavis, D.

AU - Bekele, S.

AU - Besliu, C.

AU - Budick, B.

AU - Bøggild, H.

AU - Chasman, C.

AU - Dalsgaard, H. H.

AU - Debbe, R.

AU - Fox, B.

AU - Gaardhøje, J. J.

AU - Hagel, K.

AU - Jipa, A.

AU - Johnson, E. B.

AU - Karabowicz, R.

AU - Katryńska, N.

AU - Kim, E. J.

AU - Larsen, T. M.

AU - Lee, J. H.

AU - Løvhøiden, G.

AU - Majka, Z.

AU - Murray, M.

AU - Nygaard, C.

AU - Natowitz, J.

AU - Nielsen, B. S.

AU - Pal, D.

AU - Qviler, A.

AU - Ristea, C.

AU - Röhrich, D.

AU - Sanders, S. J.

AU - Staszel, P.

AU - Tveter, T. S.

AU - Videbæk, F.

AU - Yang, H.

AU - Wada, R.

PY - 2008/7/22

Y1 - 2008/7/22

N2 - The first measurements of xF-dependent single-spin asymmetries of identified charged hadrons, π±, K±, and protons, from transversely polarized proton-proton collisions at 62.4GeV at RHIC are presented. Large asymmetries are seen in the pion and kaon channels. The asymmetries in inclusive π+ production, AN(π+), increase with xF from 0 to ∼0.25 and AN(π-) decrease from 0 to ∼-0.4. Observed asymmetries for K- unexpectedly show positive values similar to those for K+, increasing with xF, whereas proton asymmetries are consistent with zero over the measured kinematic range. Comparisons of the data with predictions of QCD-based models are presented.

AB - The first measurements of xF-dependent single-spin asymmetries of identified charged hadrons, π±, K±, and protons, from transversely polarized proton-proton collisions at 62.4GeV at RHIC are presented. Large asymmetries are seen in the pion and kaon channels. The asymmetries in inclusive π+ production, AN(π+), increase with xF from 0 to ∼0.25 and AN(π-) decrease from 0 to ∼-0.4. Observed asymmetries for K- unexpectedly show positive values similar to those for K+, increasing with xF, whereas proton asymmetries are consistent with zero over the measured kinematic range. Comparisons of the data with predictions of QCD-based models are presented.

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VL - 101

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

M1 - 042001

ER -

Single-transverse-spin asymmetries aof identified charged hadrons in polarized pp collisions at s=62.4GeV

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