Forward and midrapidity like-particle ratios from p + p collisions at √s = 200 GeV

I. G. Bearden; D. Beavis; C. Besliu; B. Budick; H. Bøggild; C. Chasman; C. H. Christensen; P. Christiansen; J. Cibor; R. Debbe; E. Enger; J. J. Gaardhøje; M. Germinario; K. Hagel; A. Holm; A. K. Holme; H. Ito; E. Jakobsen; A. Jipa; F. Jundt; J. I. Jørdre; C. E. Jørgensen; R. Karabowicz; T. Keutgen; E. J. Kim; T. Kozik; T. M. Larsen; J. H. Lee; Y. K. Lee; G. Løvhøiden; Z. Majka; A. Makeev; M. Mikelsen; M. J. Murray; J. Natowitz; B. S. Nielsen; J. Norris; K. Olchanski; D. Ouerdane; R. Płaneta; F. Rami; C. Ristea; D. Röhrich; B. H. Samset; D. Sandberg; S. J. Sanders; R. A. Scheetz; P. Staszel; T. S. Tveter; F. Videbæk; R. Wada; A. Wieloch; Z. Yin; I. S. Zgura

doi:10.1016/j.physletb.2004.12.064

Forward and midrapidity like-particle ratios from p + p collisions at √s = 200 GeV

I. G. Bearden, D. Beavis, C. Besliu, B. Budick, H. Bøggild, C. Chasman, C. H. Christensen, P. Christiansen, J. Cibor, R. Debbe, E. Enger, J. J. Gaardhøje, M. Germinario, K. Hagel, A. Holm, A. K. Holme, H. Ito, E. Jakobsen, A. Jipa, F. JundtJ. I. Jørdre, C. E. Jørgensen, R. Karabowicz, T. Keutgen, E. J. Kim, T. Kozik, T. M. Larsen, J. H. Lee, Y. K. Lee, G. Løvhøiden, Z. Majka, A. Makeev, M. Mikelsen, M. J. Murray, J. Natowitz, B. S. Nielsen, J. Norris, K. Olchanski, D. Ouerdane, R. Płaneta, F. Rami, C. Ristea, D. Röhrich, B. H. Samset, D. Sandberg, S. J. Sanders, R. A. Scheetz, P. Staszel, T. S. Tveter, F. Videbæk, R. Wada, A. Wieloch, Z. Yin, I. S. Zgura

Research output: Contribution to journal › Article › peer-review

Abstract

We present a measurement of π-/π+, K-/K+ and p̄/p from p+p collisions at s=200 GeV over the rapidity range 0<y<3.4. For pT<2.0 GeV/c we see no significant transverse momentum dependence of the ratios. All three ratios are independent of rapidity for y≲1.5 and then steadily decline from y∼1.5 to y∼3. The π-/π+ ratio is below unity for y>2.0. The p̄/p ratio is very similar for p+p and 20% central Au + Au collisions at all rapidities. In the fragmentation region the three ratios seem to be independent of beam energy when viewed from the rest frame of one of the protons. Theoretical models based on quark-diquark breaking mechanisms overestimate the p̄/p ratio up to y≲3. Including additional mechanisms for baryon number transport such as baryon junctions leads to a better description of the data.

Original language	English (US)
Pages (from-to)	42-50
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	607
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2004.12.064
State	Published - Feb 3 2005

Keywords

Baryon junctions
Forward rapidity
Limiting fragmentation
Particle ratios
Proton collisions

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2004.12.064

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Bearden, I. G., Beavis, D., Besliu, C., Budick, B., Bøggild, H., Chasman, C., Christensen, C. H., Christiansen, P., Cibor, J., Debbe, R., Enger, E., Gaardhøje, J. J., Germinario, M., Hagel, K., Holm, A., Holme, A. K., Ito, H., Jakobsen, E., Jipa, A., ... Zgura, I. S. (2005). Forward and midrapidity like-particle ratios from p + p collisions at √s = 200 GeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 607(1-2), 42-50. https://doi.org/10.1016/j.physletb.2004.12.064

Bearden, IG, Beavis, D, Besliu, C, Budick, B, Bøggild, H, Chasman, C, Christensen, CH, Christiansen, P, Cibor, J, Debbe, R, Enger, E, Gaardhøje, JJ, Germinario, M, Hagel, K, Holm, A, Holme, AK, Ito, H, Jakobsen, E, Jipa, A, Jundt, F, Jørdre, JI, Jørgensen, CE, Karabowicz, R, Keutgen, T, Kim, EJ, Kozik, T, Larsen, TM, Lee, JH, Lee, YK, Løvhøiden, G, Majka, Z, Makeev, A, Mikelsen, M, Murray, MJ, Natowitz, J, Nielsen, BS, Norris, J, Olchanski, K, Ouerdane, D, Płaneta, R, Rami, F, Ristea, C, Röhrich, D, Samset, BH, Sandberg, D, Sanders, SJ, Scheetz, RA, Staszel, P, Tveter, TS, Videbæk, F, Wada, R, Wieloch, A, Yin, Z & Zgura, IS 2005, 'Forward and midrapidity like-particle ratios from p + p collisions at √s = 200 GeV', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 607, no. 1-2, pp. 42-50. https://doi.org/10.1016/j.physletb.2004.12.064

@article{074af0979a354f35b3ddda6711c5ddfd,

title = "Forward and midrapidity like-particle ratios from p + p collisions at √s = 200 GeV",

abstract = "We present a measurement of π-/π+, K-/K+ and {\=p}/p from p+p collisions at s=200 GeV over the rapidity range 02.0. The {\=p}/p ratio is very similar for p+p and 20% central Au + Au collisions at all rapidities. In the fragmentation region the three ratios seem to be independent of beam energy when viewed from the rest frame of one of the protons. Theoretical models based on quark-diquark breaking mechanisms overestimate the {\=p}/p ratio up to y≲3. Including additional mechanisms for baryon number transport such as baryon junctions leads to a better description of the data.",

keywords = "Baryon junctions, Forward rapidity, Limiting fragmentation, Particle ratios, Proton collisions",

author = "Bearden, {I. G.} and D. Beavis and C. Besliu and B. Budick and H. B{\o}ggild and C. Chasman and Christensen, {C. H.} and P. Christiansen and J. Cibor and R. Debbe and E. Enger and Gaardh{\o}je, {J. J.} and M. Germinario and K. Hagel and A. Holm and Holme, {A. K.} and H. Ito and E. Jakobsen and A. Jipa and F. Jundt and J{\o}rdre, {J. I.} and J{\o}rgensen, {C. E.} and R. Karabowicz and T. Keutgen and Kim, {E. J.} and T. Kozik and Larsen, {T. M.} and Lee, {J. H.} and Lee, {Y. K.} and G. L{\o}vh{\o}iden and Z. Majka and A. Makeev and M. Mikelsen and Murray, {M. J.} and J. Natowitz and Nielsen, {B. S.} and J. Norris and K. Olchanski and D. Ouerdane and R. P{\l}aneta and F. Rami and C. Ristea and D. R{\"o}hrich and Samset, {B. H.} and D. Sandberg and Sanders, {S. J.} and Scheetz, {R. A.} and P. Staszel and Tveter, {T. S.} and F. Videb{\ae}k and R. Wada and A. Wieloch and Z. Yin and Zgura, {I. S.}",

note = "Funding Information: This work was supported by the Division of Nuclear Physics of the Office of Science of the US Department of Energy under contracts DE-AC02-98-CH10886, DE-FG03-93-ER40773, DE-FG03-96-ER40981, and DE-FG02-99-ER41121, the Danish Natural Science Research Council, the Research Council of Norway, the Jagiellonian University Grants, the Korea Research Foundation Grant, and the Romanian Ministry of Education and Research (5003/1999, 6077/2000).",

year = "2005",

month = feb,

day = "3",

doi = "10.1016/j.physletb.2004.12.064",

language = "English (US)",

volume = "607",

pages = "42--50",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

TY - JOUR

T1 - Forward and midrapidity like-particle ratios from p + p collisions at √s = 200 GeV

AU - Bearden, I. G.

AU - Beavis, D.

AU - Besliu, C.

AU - Budick, B.

AU - Bøggild, H.

AU - Chasman, C.

AU - Christensen, C. H.

AU - Christiansen, P.

AU - Cibor, J.

AU - Debbe, R.

AU - Enger, E.

AU - Gaardhøje, J. J.

AU - Germinario, M.

AU - Hagel, K.

AU - Holm, A.

AU - Holme, A. K.

AU - Ito, H.

AU - Jakobsen, E.

AU - Jipa, A.

AU - Jundt, F.

AU - Jørdre, J. I.

AU - Jørgensen, C. E.

AU - Karabowicz, R.

AU - Keutgen, T.

AU - Kim, E. J.

AU - Kozik, T.

AU - Larsen, T. M.

AU - Lee, J. H.

AU - Lee, Y. K.

AU - Løvhøiden, G.

AU - Majka, Z.

AU - Makeev, A.

AU - Mikelsen, M.

AU - Murray, M. J.

AU - Natowitz, J.

AU - Nielsen, B. S.

AU - Norris, J.

AU - Olchanski, K.

AU - Ouerdane, D.

AU - Płaneta, R.

AU - Rami, F.

AU - Ristea, C.

AU - Röhrich, D.

AU - Samset, B. H.

AU - Sandberg, D.

AU - Sanders, S. J.

AU - Scheetz, R. A.

AU - Staszel, P.

AU - Tveter, T. S.

AU - Videbæk, F.

AU - Wada, R.

AU - Wieloch, A.

AU - Yin, Z.

AU - Zgura, I. S.

N1 - Funding Information: This work was supported by the Division of Nuclear Physics of the Office of Science of the US Department of Energy under contracts DE-AC02-98-CH10886, DE-FG03-93-ER40773, DE-FG03-96-ER40981, and DE-FG02-99-ER41121, the Danish Natural Science Research Council, the Research Council of Norway, the Jagiellonian University Grants, the Korea Research Foundation Grant, and the Romanian Ministry of Education and Research (5003/1999, 6077/2000).

PY - 2005/2/3

Y1 - 2005/2/3

N2 - We present a measurement of π-/π+, K-/K+ and p̄/p from p+p collisions at s=200 GeV over the rapidity range 02.0. The p̄/p ratio is very similar for p+p and 20% central Au + Au collisions at all rapidities. In the fragmentation region the three ratios seem to be independent of beam energy when viewed from the rest frame of one of the protons. Theoretical models based on quark-diquark breaking mechanisms overestimate the p̄/p ratio up to y≲3. Including additional mechanisms for baryon number transport such as baryon junctions leads to a better description of the data.

AB - We present a measurement of π-/π+, K-/K+ and p̄/p from p+p collisions at s=200 GeV over the rapidity range 02.0. The p̄/p ratio is very similar for p+p and 20% central Au + Au collisions at all rapidities. In the fragmentation region the three ratios seem to be independent of beam energy when viewed from the rest frame of one of the protons. Theoretical models based on quark-diquark breaking mechanisms overestimate the p̄/p ratio up to y≲3. Including additional mechanisms for baryon number transport such as baryon junctions leads to a better description of the data.

KW - Baryon junctions

KW - Forward rapidity

KW - Limiting fragmentation

KW - Particle ratios

KW - Proton collisions

UR - http://www.scopus.com/inward/record.url?scp=19944434134&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=19944434134&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2004.12.064

DO - 10.1016/j.physletb.2004.12.064

M3 - Article

AN - SCOPUS:19944434134

SN - 0370-2693

VL - 607

SP - 42

EP - 50

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

Forward and midrapidity like-particle ratios from p + p collisions at √s = 200 GeV

Abstract

Keywords

ASJC Scopus subject areas

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