PHENIX central arm particle ID detectors

Aizawa, Masuo; Akiba, Y.; Begay, R.; Burward-Hoy, J. M.; Chappell, R.B.; Chi, C.Y.; Chiu, M.; Chujo, T.; Crook, D.W.; Danmura, A.; Ebisu, K.; Emery, M.S.; Enosawa, K.; Esumi, S.; Ferrierra, J.; Frawley, A. D.; Griffin, V.; Hamagaki, H.; Hara, Hiroshi; Hayano, R.; Hayashi, Hiroyuki; Hemmick, T. K.; Hibino, M.; Higuchi, R.; Hirano, Tetsufumi; Hoade, R.; Hutter, R.; Inaba, M.; Jones, Keith; Kametani, S.; Kato, S.; Kennedy, M.; Kikuchi, Jun; Kiyomichi, A.; Koseki, K.; Kurata-Nishimura, M.; Kurita, K.; Kuroki, Y.; Matsumoto, T.; Miake, Y.; Miyamoto, Yusuke; Moscone, G.G.; Nagasaka, Y.; Nishimura, S.; Ono, M.; Oyama, K.; Raynis, R.; Sakaguchi, T.; Sakai, S.; Sako, H.; Salomone, S.; Sato, Susumu; Shigaki, K.; Shimada, Tokuzo; Suzuki-Nara, M.; Tamai, M.; Tanaka, Y.; Tsuruoka, H.; Urasawa, S.; Ushiroda, T.; Walker, James W.; Wang, S.; Wintenberg, A.L.; Wright, L.; Yagi, K.; Yokota, Y.; Young, G. R.

doi:10.1016/s0168-9002(02)01953-8

Cited by 77 publications

(54 citation statements)

References 8 publications

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“…The φ data for this paper were obtained with the central arm detector subsystems which provide high resolution particle identification and momentum reconstruction. A complete description of the PHENIX apparatus has been published elsewhere [44,45,46,47,48,49]. We present a brief review of the relevant detector subsystems in the following sections.…”

Section: Phenix Detectormentioning

confidence: 99%

Production ofϕmesons at midrapidity insNN=200GeV
Adler¹,
Afanasiev²,
Aidala³
et al. 2005
Phys. Rev. C
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108
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We present the results of φ meson production in the K + K − decay channel from Au+Au collisions at √ sNN = 200 GeV as measured at mid-rapidity by the PHENIX detector at RHIC. Precision resonance centroid and width values are extracted as a function of collision centrality. No significant variation from the PDG accepted values is observed, contrary to some model predictions. The φ transverse mass spectra are fitted with a linear exponential function for which the derived inverse slope parameter is seen to be constant as a function of centrality. However, when these data are fitted by a hydrodynamic model the result is that the centrality-dependent freeze-out temperature and the expansion velocity values are consistent with the values previously derived from fitting identified charged hadron data. As a function of transverse momentum the collisions scaled peripheral-tocentral yield ratio RCP for the φ is comparable to that of pions rather than that of protons. This result lends support to theoretical models which distinguish between baryons and mesons instead of particle mass for explaining the anomalous (anti)proton yield.

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Section: Phenix Detectormentioning

confidence: 99%

Production ofϕmesons at midrapidity insNN=200GeV
Adler¹,
Afanasiev²,
Aidala³
et al. 2005
Phys. Rev. C
Self Cite
108
2
50
0
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“…To separate the two background sources, we take advantage of the RICH to tag electrons. Charged particles with velocities above the Cherenkov threshold γ th = 35 (CO 2 radiator) will emit Cherenkov photons, which are detected by photon multiplier tubes (PMT) in the RICH [40]. We characterize the Cherenkov photon yield for a charged particle by N P MT , the number of PMTs with signals above threshold associated to the track.…”

Section: Background Rejection and Subtractionmentioning

confidence: 99%

High- p_{T} charged hadron suppression in Au+Au collisions at sqrt[s_{NN}]=200GeV

et al. 2004

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The PHENIX experiment at RHIC has measured charged hadron yields at mid-rapidity over a wide range of transverse momentum (0.5 < pT < 10 GeV/c) in Au + Au collisions atGeV. The data are compared to π 0 measurements from the same experiment. For both charged hadrons and neutral pions, the yields per nucleon-nucleon collision are significantly suppressed in central compared to peripheral and nucleon-nucleon collisions. The suppression sets in gradually and increases with increasing centrality of the collisions. Above 4-5 GeV/c in pT , a constant and almost identical suppression of charged hadrons and π 0 's is observed. The pT spectra are compared to published spectra from Au + Au at √ sNN = 130 in terms of xT scaling. Central and peripheral π 0 as well as peripheral charged spectra exhibit the same xT scaling as observed in p + p data.

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“…5(a) and 5(b), respectively, along with previously published PHENIX results [51] for low-p T charged pions measured with the PHENIX time of flight detector [48], which can identify pions for p T < 3 GeV=c. From the determination of the absolute luminosity sampled, there is an overall scale uncertainty of 9.6%, correlated between all PHENIX results.…”

Section: A Cross Sectionsmentioning

confidence: 81%

“…The RICH [48], which uses CO 2 as a radiator, allows for the identification of charged pions above p T ∼ 4.7 GeV=c. The Čerenkov light is collected by a photomultiplier array on a plane outside of the tracking acceptance after reflection by a pair of focusing spherical mirrors.…”

Section: Charged Pion Identificationmentioning

confidence: 99%

Charged-pion cross sections and double-helicity asymmetries in polarizedp+pcollisions ats=200 GeV
Adare¹,
Aidala²,
Ajitanand³
et al. 2015
Phys. Rev. D
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We present midrapidity charged-pion invariant cross sections, the ratio of the π − to π þ cross sections and the charge-separated double-spin asymmetries in polarized p þ p collisions at ffiffi ffi s p ¼ 200 GeV. While the cross section measurements are consistent within the errors of next-to-leading-order (NLO) perturbative quantum chromodynamics predictions (pQCD), the same calculations overestimate the ratio of the charged-pion cross sections. This discrepancy arises from the cancellation of the substantial systematic errors associated with the NLO-pQCD predictions in the ratio and highlights the constraints these data will place on flavor-dependent pion fragmentation functions. The charge-separated pion asymmetries presented here sample an x range of ∼0.03-0.16 and provide unique information on the sign of the gluon-helicity distribution.

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PHENIX central arm particle ID detectors

Cited by 77 publications

References 8 publications

Production ofϕmesons at midrapidity insNN=200GeV
Adler¹,
Afanasiev²,
Aidala³
et al. 2005
Phys. Rev. C
Self Cite
108
2
50
0
View full text Add to dashboard Cite

Production ofϕmesons at midrapidity insNN=200GeV
Adler¹,
Afanasiev²,
Aidala³
et al. 2005
Phys. Rev. C
Self Cite
108
2
50
0
View full text Add to dashboard Cite

High- p_{T} charged hadron suppression in Au+Au collisions at sqrt[s_{NN}]=200GeV

Charged-pion cross sections and double-helicity asymmetries in polarizedp+pcollisions ats=200 GeV
Adare¹,
Aidala²,
Ajitanand³
et al. 2015
Phys. Rev. D
Self Cite
15
0
4
0
View full text Add to dashboard Cite

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PHENIX central arm particle ID detectors

Cited by 77 publications

References 8 publications

Production ofϕmesons at midrapidity insNN=200GeVAdler1, Afanasiev2, Aidala3 et al. 2005Phys. Rev. CSelf Cite1082500View full textAdd to dashboardCite

Production ofϕmesons at midrapidity insNN=200GeVAdler1, Afanasiev2, Aidala3 et al. 2005Phys. Rev. CSelf Cite1082500View full textAdd to dashboardCite

High- p_{T} charged hadron suppression in Au+Au collisions at sqrt[s_{NN}]=200GeV

Charged-pion cross sections and double-helicity asymmetries in polarizedp+pcollisions ats=200 GeVAdare1, Aidala2, Ajitanand3 et al. 2015Phys. Rev. DSelf Cite15040View full textAdd to dashboardCite

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About

Production ofϕmesons at midrapidity insNN=200GeV
Adler¹,
Afanasiev²,
Aidala³
et al. 2005
Phys. Rev. C
Self Cite
108
2
50
0
View full text Add to dashboard Cite

Production ofϕmesons at midrapidity insNN=200GeV
Adler¹,
Afanasiev²,
Aidala³
et al. 2005
Phys. Rev. C
Self Cite
108
2
50
0
View full text Add to dashboard Cite

Charged-pion cross sections and double-helicity asymmetries in polarizedp+pcollisions ats=200 GeV
Adare¹,
Aidala²,
Ajitanand³
et al. 2015
Phys. Rev. D
Self Cite
15
0
4
0
View full text Add to dashboard Cite