Double-helicity dependence of jet properties from dihadrons in longitudinally polarized p plus p collisions at root s=200 GeV

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title = "Double-helicity dependence of jet properties from dihadrons in longitudinally polarized p plus p collisions at root s=200 GeV",
abstract = "It has been postulated that partonic orbital angular momentum can lead to a significant double-helicity dependence in the net transverse momentum of Drell-Yan dileptons produced in longitudinally polarized p + p collisions. Analogous effects are also expected for dijet production. If confirmed by experiment, this hypothesis, which is based on semiclassical arguments, could lead to a new approach for studying the contributions of orbital angular momentum to the proton spin. We report the first measurement of the double-helicity dependence of the dijet transverse momentum in longitudinally polarized p + p collisions at root s = 200 GeV from data taken by the PHENIX experiment in 2005 and 2006. The analysis deduces the transverse momentum of the dijet from the widths of the near-and far-side peaks in the azimuthal correlation of the dihadrons. When averaged over the transverse momentum of the triggered particle, the difference of the root mean square of the dijet transverse momentum between like-and unlike-helicity collisions is found to be -37 +/- 88(stat) +/- 14(sys)t MeV/c.",
author = "A. Adare and S. Afanasiev and C. Aidala and Ajitanand, {N. N.} and Y. Akiba and H. Al-Bataineh and J. Alexander and K. Aoki and L. Aphecetche and R. Armendariz and Aronson, {S. H.} and J. Asai and Aschenauer, {E. C.} and Atomssa, {E. T.} and R. Averbeck and Awes, {T. C.} and B. Azmoun and V. Babintsev and M. Bai and G. Baksay and L. Baksay and A. Baldisseri and Barish, {K. N.} and Barnes, {P. D.} and B. Bassalleck and Basye, {A. T.} and S. Bathe and S. Batsouli and V. Baublis and C. Baumann and A. Bazilevsky and S. Belikov and R. Bennett and A. Berdnikov and Y. Berdnikov and Bickley, {A. A.} and Boissevain, {J. G.} and H. Borel and K. Boyle and Brooks, {M. L.} and H. Buesching and V. Bumazhnov and G. Bunce and S. Butsyk and Camacho, {C. M.} and S. Campbell and Chang, {B. S.} and Chang, {W. C.} and Charvet, {J. -L.} and S. Chernichenko and J. Chiba and Chi, {C. Y.} and M. Chiu and Choi, {I. J.} and Choudhury, {R. K.} and T. Chujo and P. Chung and A. Churyn and V. Cianciolo and Z. Citron and Cleven, {C. R.} and Cole, {B. A.} and Comets, {M. P.} and P. Constantin and M. Csanad and T. Csoergo and T. Dahms and S. Dairaku and K. Das and G. David and Deaton, {M. B.} and K. Dehmelt and H. Delagrange and A. Denisov and D. d'Enterria and A. Deshpande and Desmond, {E. J.} and O. Dietzsch and A. Dion and M. Donadelli and O. Drapier and A. Drees and Drees, {K. A.} and Dubey, {A. K.} and A. Durum and D. Dutta and V. Dzhordzhadze and Efremenko, {Y. V.} and J. Egdemir and F. Ellinghaus and Emam, {W. S.} and T. Engelmore and A. Enokizono and H. En'yo and S. Esumi and Eyser, {K. O.} and B. Fadem and Fields, {D. E.} and Finger, {M., Jr.} and M. Finger and F. Fleuret and Fokin, {S. L.} and Z. Fraenkel and Frantz, {J. E.} and A. Franz and Frawley, {A. D.} and K. Fujiwara and Y. Fukao and T. Fusayasu and S. Gadrat and I. Garishvili and A. Glenn and H. Gong and M. Gonin and J. Gosset and Y. Goto and {de Cassagnac}, {R. Granier} and N. Grau and Greene, {S. V.} and Perdekamp, {M. Grosse} and T. Gunji and Gustafsson, {H. -A.} and T. Hachiya and Henni, {A. Hadj} and C. Haegemann and Haggerty, {J. S.} and H. Hamagaki and R. Han and H. Harada and Hartouni, {E. P.} and K. Haruna and Eva Haslum and R. Hayano and M. Heffner and Hemmick, {T. K.} and T. Hester and X. He and H. Hiejima and Hill, {J. C.} and R. Hobbs and M. Hohlmann and W. Holzmann and K. Homma and B. Hong and T. Horaguchi and D. Hornback and S. Huang and T. Ichihara and R. Ichimiya and H. Iinuma and Y. Ikeda and K. Imai and J. Imrek and M. Inaba and Y. Inoue and D. Isenhower and L. Isenhower and M. Ishihara and T. Isobe and M. Issah and A. Isupov and D. Ivanischev and Jacak, {B. V.} and J. Jia and J. Jin and O. Jinnouchi and Johnson, {B. M.} and Joo, {K. S.} and D. Jouan and F. Kajihara and S. Kametani and N. Kamihara and J. Kamin and M. Kaneta and Kang, {J. H.} and H. Kanou and J. Kapustinsky and D. Kawall and Kazantsev, {A. V.} and T. Kempel and A. Khanzadeev and Kijima, {K. 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Zhou and J. Zimanyi and L. Zolin",
year = "2010",
doi = "10.1103/PhysRevD.81.012002",
language = "English",
volume = "81",
journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",
issn = "1550-2368",
publisher = "American Physical Society",
number = "1",